qid int64 1 74.7M | question stringlengths 12 33.8k | date stringlengths 10 10 | metadata list | response_j stringlengths 0 115k | response_k stringlengths 2 98.3k |
|---|---|---|---|---|---|
113,179 | How can I improve the model's ability to predict rare classes given the objective of predicting rare class accurately? I have a dataset with binary target variable. I tested a few models but still despite the model's accuracy being high, it is unable to predict any True Negative and False Negative (both have value of 0). I have tried resampling strategies but it does not have an impact on TN and FN, rather the accuracy decreases. | 2022/08/02 | [
"https://datascience.stackexchange.com/questions/113179",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/137223/"
] | Using Bayes’ theorem, the predictions are affected by the [prior probability](https://stats.stackexchange.com/a/583115/247274) of the classes. When you use a cutoff threshold of $0.5$, it might be that you never predict that high of a probability of being in the minority class, so you never classify in the minority class.
This alludes to the [many problems](https://stats.meta.stackexchange.com/q/6349/247274) with threshold-based metrics that often have their most dramatic effects in imbalanced situations.
A simple approach is to change the threshold, with the extreme being my suggestion in the comments to classify everything as the minority class. This is why ROCAUC is a popular, even if [problematic](https://stats.stackexchange.com/search?tab=votes&q=user%3a4253%20roc) metric, as it considers performance at all thresholds.
A more sophisticated approach would be to ditch thresholds and evaluate the probability outputs with the strictly proper scoring rules discussed in some of those links in that [Cross Validated Meta post.](https://stats.meta.stackexchange.com/q/6349/247274) Frank Harrell, founding chair of biostatistics at Vanderbilt University, has two good blog posts on probability predictions, too.
[Damage Caused by Classification Accuracy and Other Discontinuous Improper Accuracy Scoring Rules](https://www.fharrell.com/post/class-damage/)
[Classification vs. Prediction](https://www.fharrell.com/post/classification/) | There are multiple ways to handle :
* In cost function, increase weight for instances of minority class
* while minimizing cost function, take recall as your performance criterion |
113,179 | How can I improve the model's ability to predict rare classes given the objective of predicting rare class accurately? I have a dataset with binary target variable. I tested a few models but still despite the model's accuracy being high, it is unable to predict any True Negative and False Negative (both have value of 0). I have tried resampling strategies but it does not have an impact on TN and FN, rather the accuracy decreases. | 2022/08/02 | [
"https://datascience.stackexchange.com/questions/113179",
"https://datascience.stackexchange.com",
"https://datascience.stackexchange.com/users/137223/"
] | Using Bayes’ theorem, the predictions are affected by the [prior probability](https://stats.stackexchange.com/a/583115/247274) of the classes. When you use a cutoff threshold of $0.5$, it might be that you never predict that high of a probability of being in the minority class, so you never classify in the minority class.
This alludes to the [many problems](https://stats.meta.stackexchange.com/q/6349/247274) with threshold-based metrics that often have their most dramatic effects in imbalanced situations.
A simple approach is to change the threshold, with the extreme being my suggestion in the comments to classify everything as the minority class. This is why ROCAUC is a popular, even if [problematic](https://stats.stackexchange.com/search?tab=votes&q=user%3a4253%20roc) metric, as it considers performance at all thresholds.
A more sophisticated approach would be to ditch thresholds and evaluate the probability outputs with the strictly proper scoring rules discussed in some of those links in that [Cross Validated Meta post.](https://stats.meta.stackexchange.com/q/6349/247274) Frank Harrell, founding chair of biostatistics at Vanderbilt University, has two good blog posts on probability predictions, too.
[Damage Caused by Classification Accuracy and Other Discontinuous Improper Accuracy Scoring Rules](https://www.fharrell.com/post/class-damage/)
[Classification vs. Prediction](https://www.fharrell.com/post/classification/) | Behind the scenes of most machine learning algorithms there is a confidence score associated to the models prediction. For sklearn you can retrieve them using model\_name.predict\_prob instead of model\_name.predict. By default most models predict uses a .5 confidence score, i.e. anything above a .5 confidence score is predicted to be in the positive class. All you have to do is alter that threshold and you can tradeoff performance between the two classes.
You can also try various methods for making the model "see" a more balanced dataset - upsampling, downsampling, SMOTE, and class sensitive weighting. |
9,137,084 | I'm developing a game for Android and I'd like to collect statistics on how users play the game: how many times they replay the level, what is kill/death ratio, how many times they miss the target and so on. Let's assume, I already have code for collecting needed data inside my application (so logic of counting stuff is defined). Now I want to pack the information and send it—at least to my email, at best to some web-service—to analyze it.
Any suggestions on that matter? | 2012/02/03 | [
"https://Stackoverflow.com/questions/9137084",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/113134/"
] | You can use [Google Analytics SDK for Android](http://code.google.com/intl/no-NO/apis/analytics/docs/mobile/android.html) to track how many users use your app. Also, you can track events with this SDK.
**UPDATE**
Actually, [Flurry Analytics](http://flurry.com/product/analytics/index.html) might be even more suited for you. And its also free. Click on Custom Events and Parameters for details. | There are several Android Analytics services:
Claritics, Flurry, Google Analytics, InApp, Localytics, Medialets and Mixpanel.
Those are the ones I found when scouting for them. |
1,521,176 | I've got a machine that bluescreens, but will not write out any sort of dump file (mini, kernel or otherwise). I've fiddled with the swap file so it be large enough to handle the dump. Only the C:\ drive is defined on the machine, so the potential issue of having the swap file on a different drive is not a factor.
Checking the event log, there an entry which corresponds to the BSOD that reads:
*"Crash dump initialization failed"*
In the details for this event, there is a reference to the hard drive. Presumably, this is where the dump would have been written to:
*\Device\HarddiskVolume2*
However, there is only one physical hard drive and a single partition/volume defined. The System Information utility (msinfo32.exe) shows the drive name to be:
*\Device\HarddiskVolume1*
Seems like Windows the crash dump is failing as it wants to write onto "Volume2", which does not exist.
I'm wondering if the *\Device\HarddiskVolume2* string might be editable and could be changed to *\Device\HarddiskVolume1*? Registry, BIOS and the other usual locations have been checked, but with (unsurprisingly) no luck. I'm out of ideas.
Any suggestions appreciated. | 2020/01/29 | [
"https://superuser.com/questions/1521176",
"https://superuser.com",
"https://superuser.com/users/1134575/"
] | Yes
===
Unlike most other laptops, MacBook Pros with dGPUs use a graphics muxer to physically switch which GPU is pushing pixels to the display. By contrast, most other laptops simply share a framebuffer which both GPUs push to and the display can read from via some methodology. If you want to read about this more, I recommend you read up on the [Linux kernel's documentation](https://01.org/linuxgraphics/gfx-docs/drm/gpu/vga-switcheroo.html) or [Arch page](https://wiki.archlinux.org/index.php/Hybrid_graphics#Dynamic_Switching_Model) on hybrid graphics. The long and short of it though is that the unique hardware architecture of the MacBook Pro means that it can't just operate like most other laptops.
Under macOS (and Linux), this is handled by the OS and drivers sending the appropriate commands to the hardware and switching when needed. However, although Windows does have graphics switching, it isn't as well integrated with Macs. To solve this, by default, MBPs with dGPUs boot into Bootcamp with the iGPU disabled—something that, as you've discovered, can be problematic.
For [reasons](https://egpu.io/boot-camp-egpu-setup-guide/), this is a particularly sticky issue with eGPUs. As such, the eGPU community has developed tools to get around this by making your MBP think it's booting into macOS, thus keeping the iGPU enabled. I strongly recommend you read the entirity of the [Boot Camp eGPU Setup Guide thread](https://egpu.io/boot-camp-egpu-setup-guide/) (even if you're not going to use an eGPU), but the basics steps are as follows:
1. Use [automate-eGPU EFI](https://egpu.io/forums/mac-setup/automate-egpu-efi-egpu-boot-manager-for-macos-and-windows/) to set up the custom bootloader (or [rEFInd](https://www.rodsbooks.com/refind/) it if you want to use an external drive.)
1. Download automate-eGPU EFI to a USB drive or internal partition formatted as FAT
2. Boot to the drive by holding down `Option` during boot
3. Install Intel graphics drivers
2. For users of 2016 and 2017 15" tMBPs (not you!), use 0xbb’s integrated.bat to set the GPU you want attached to the display.
3. Install AMD drivers.
At this point, you should be able to switch between your GPUs!
If you're feeling brave, I'd also recommend you use AMD drivers from [BootCampDrivers](https://www.bootcampdrivers.com) rather than the stock AMD ones. Unfortunately, the stock AMD drivers are very poorly optimized for Macs; these drivers are modified to better support Macs. Note that since they're modified binaries, there's no source to view, and you're trusting that the author to write good code. That said, I personally trust them, and the benefits are real. | Boot Camp eGPU setup on a Mac can be plug-and-play for some and a total nightmare for others. The easiest Thunderbolt 3 Mac to pair with an eGPU is one that has Intel integrated graphics only such as the 13″ MacBook Pro and 2018 Mac mini. Mac computers with a discrete graphics card often require more resources and Windows isn’t always very compliant. Error 12 (lack of resources) or flickering/stuck Windows logo at boot are primary issues when connecting an eGPU in Boot Camp. Now that Apple officially supports external graphics cards in macOS (since 10.13.4), we’ve devoted more effort to set up and maintain a functional external GPU in Windows 10 via Boot Camp. In the past three years, our community has provided many different solutions [External Graphics Card build guides]. This Boot Camp eGPU setup guide is a collection of those efforts. |
72,327 | When using robocopy windows utility, what flags do I set so that robocopy aborts on the very first error it sees, similar to xcopy /dry command?
I need to mirror two dirs, and on occasion some files would be locked. I do not want robocopy to continue trying to copy files, or override the files that are not locked - rather the very first error should stop the whole copy process. | 2009/10/07 | [
"https://serverfault.com/questions/72327",
"https://serverfault.com",
"https://serverfault.com/users/22267/"
] | Even precompiled ASP.NET apps have a nasty startup hit. Generally the more complex the app, the more painful the startup. Writing a script could help, but you are probably better off changing the application pool settings not to shut down every 1740 minutes, which is the default. I usually start with never and work my way down if there are problems. | Try disabling the application pool idle time-out by setting it to "0" minutes.
<http://technet.microsoft.com/en-us/library/cc771956(WS.10).aspx> |
28,817,143 | Apologies if this is a duplicate, I didn't hit on the magic keyword while searching.
I have a project where I pull in various dependencies. One of them ([jooq](https://github.com/jOOQ/jOOQ/tree/master/jOOQ-scala)) depends on scala 2.10, whereas my application depends on scala 2.11.x.
Although everything "works", I would like to understand better what are the runtime implications of doing something like this? How will the JVM resolve the different dependencies, and what type of overhead could I be looking at?
I am trying to determine if it's worthwhile to fork jooq, and compile it against 2.11 (assuming it will compile and work under 2.11). | 2015/03/02 | [
"https://Stackoverflow.com/questions/28817143",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/141516/"
] | Scala is not binary compatible between major versions (2.10 to 2.11 for example). This means that there are no guarantees that a library that is compiled for Scala 2.10 will work in a project using 2.11. You might be lucky enough that it works, but I would definitely not depend on that luck for any important codebase.
This is the reason why Scala libraries always has got the library version in their name and why SBT has got special syntax for dependencies to get the right library build for the Scala version used.
On a side note Martin Odersky (Scalas "father") has been proposing a solution to this problem during the year, storing an intermediate representation along with the byte code to allow automagical recompilation to a newer Scala version. | You have the possible danger of runtime exceptions.
As Scala 2.10 and 2.11 are quite similiar the danger is not as big as it has been with 2.9 to 2.10 or 2.8 to 2.9 but it still is there and if you want to do something that is meant to be prodcution code, you definitly should try to raise jooq to 2.11. |
154,821 | I am trying to import a [vegetation data raster](http://www.fs.usda.gov/rds/archive/Product/RDS-2014-0002/) in Esri GRID format from the USDA into QGIS. One file ("w0001.adf") can be added using "add raster", but the attribute table and other info register as error or errors. Using the "ArcInfo/Binary directory" does not work either. | 2015/07/17 | [
"https://gis.stackexchange.com/questions/154821",
"https://gis.stackexchange.com",
"https://gis.stackexchange.com/users/55353/"
] | The .adf file is one component of an Esri GRID 'file', much like the .shp is one component of a shapefile. The other component files generally aren't or don't need to be accessed individually. If you can load that w0001.adf file and see the raster image, I suspect you're seeing all the data. I opened/added the file in Arc with no issue. In looking at the attribute table for the raster there, there's just a second, coded, numeric value field - you won't see the text strings describing what those coded values are (that info is listed in the metadata). | The data opens with no issue in QGIS 2.8.1. The raster contains only the coded values 1-6. These coded values are described in the [metadata](http://www.fs.usda.gov/rds/archive/products/RDS-2014-0002/_metadata_RDS-2014-0002.html):
>
> Six values of ownership:
>
>
> 1 = Federal (Public): Owned by the federal government. FIA Codes 11-13, 21-25.
>
>
> 2 = State (Public): Owned by a state government. FIA Code 31.
>
>
> 3 = Local (Public): Owned by a local government. FIA Code 32.
>
>
> 4 = Family (Private): Owned by families, individuals, trusts, estates, family partnerships, and other unincorporated groups of individuals that own forest land. FIA Code 45.
>
>
> 5 = Corporate (Private): Owned by corporations. FIA Code 41.
>
>
> 6 = Other Private (Private): Owned by conservation and natural resource organizations, unincorporated partnerships and associations, and Native American tribes. FIA Codes 42-44.
>
>
>
There are no other attributes, which means there is no information about what State a cell is in. To extract forest ownership type for each state, you will have to get a [US States dataset](https://www.google.com.au/search?q=us%20states%20shapefile) and use that to analyse the forest ownership data. You should ask a separate question for that. |
154,821 | I am trying to import a [vegetation data raster](http://www.fs.usda.gov/rds/archive/Product/RDS-2014-0002/) in Esri GRID format from the USDA into QGIS. One file ("w0001.adf") can be added using "add raster", but the attribute table and other info register as error or errors. Using the "ArcInfo/Binary directory" does not work either. | 2015/07/17 | [
"https://gis.stackexchange.com/questions/154821",
"https://gis.stackexchange.com",
"https://gis.stackexchange.com/users/55353/"
] | The .adf file is one component of an Esri GRID 'file', much like the .shp is one component of a shapefile. The other component files generally aren't or don't need to be accessed individually. If you can load that w0001.adf file and see the raster image, I suspect you're seeing all the data. I opened/added the file in Arc with no issue. In looking at the attribute table for the raster there, there's just a second, coded, numeric value field - you won't see the text strings describing what those coded values are (that info is listed in the metadata). | For those of you coming to this question in 2022 Chris W's and user2856 answers are still relevant in regards to adding the .adf file to see the data however there is now a QGIS plugin funded by NOAA called **Raster Attribute Table Plugin** that allows you to load the attribute table and stylize your layer by the classes defined in the table. |
21,760,439 | I've a tabBar with 4 tabs, the Main tab is the first one, and when I click the second one I want do display another activity above the main activity in the half of the screen, reducing the opacity of the main. I'm doing this with a Dialog but it's not the result I want. What are the best way to do this?
example image
 | 2014/02/13 | [
"https://Stackoverflow.com/questions/21760439",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/3306891/"
] | Look at [Fragments](http://developer.android.com/guide/components/fragments.html), this seems like the perfect time to use them. | There are only 3 options to achieve what you want.
* Second activity can be dialog (You already said you do it but you don't like).
* Using [fragments](http://developer.android.com/guide/components/fragments.html). (recommended)
* Using layouts by playing with visibility, (not recommended in your case)
>
> A Fragment represents a behavior or a portion of user interface in an Activity. You can combine multiple fragments in a single activity to build a multi-pane UI and reuse a fragment in multiple activities
>
>
> |
382,152 | >
> Broadly, the steps involved in establishing a full implementation can be separated as follows: analysing the application to be accelerated; understanding the logic, compute, and data dependencies; and then enabling this on a chip given the constraints of real hardware.
>
>
>
Is this correct usage of semicolons? I'm not concerned about them following the colon; I'm only concerned about using it in a list where only one individual element - as far as the semicolons are concerned - is itself comma-separated. Also slightly concerned about how the list being sequential affects the sentence flow.
Many thanks in advance for any help/advice. | 2017/04/06 | [
"https://english.stackexchange.com/questions/382152",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/229009/"
] | I'm an American.
If someone is "picking up your slack," they are taking on the work that you are not doing. There's not an inherent connotation about *why* you aren't doing that work. In many cases, you have slack to be picked up because you're overloaded and too busy doing something of higher priority.
To my knowledge, "picking up slack" and "slacking" do not have a relationship.
The ([real, this time](http://etymonline.com/index.php?term=slack&allowed_in_frame=0); n.1) origin of the phrase comes from sailing. When a sailor is pulling on a "line" (a rope), there's likely to be some amount of slack in the line he's putting down. Another sailor is needed to "pick up the slack" and ensure the line doesn't get tangled. In this context, "picking up the slack" is purely about teamwork; the first sailor is **unable** to pick up that slack because they are busy adjusting the line, so the second sailor is needed. | Contrast these two statements:
"I'll clean up the mess."
"I'll clean up his mess."
The former leaves the source of the mess completely ambiguous, and no accusation of who made the mess is evident.
The latter places the responsibility for the mess on someone, which could lead to conflict.
In the example you cited, "slack" isn't attributed to anyone. Perhaps it was due to bad luck, game latency, or a loose cat on a keyboard. We don't know. The speaker is simply saying "I got it covered." |
382,152 | >
> Broadly, the steps involved in establishing a full implementation can be separated as follows: analysing the application to be accelerated; understanding the logic, compute, and data dependencies; and then enabling this on a chip given the constraints of real hardware.
>
>
>
Is this correct usage of semicolons? I'm not concerned about them following the colon; I'm only concerned about using it in a list where only one individual element - as far as the semicolons are concerned - is itself comma-separated. Also slightly concerned about how the list being sequential affects the sentence flow.
Many thanks in advance for any help/advice. | 2017/04/06 | [
"https://english.stackexchange.com/questions/382152",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/229009/"
] | Contrast these two statements:
"I'll clean up the mess."
"I'll clean up his mess."
The former leaves the source of the mess completely ambiguous, and no accusation of who made the mess is evident.
The latter places the responsibility for the mess on someone, which could lead to conflict.
In the example you cited, "slack" isn't attributed to anyone. Perhaps it was due to bad luck, game latency, or a loose cat on a keyboard. We don't know. The speaker is simply saying "I got it covered." | This sounds like a conflict of one's experiences clouding one's definition. As explained here, it's generally neutral, though it's not the first time people have steered the phrase negatively. The fact remains that it's not inherently negative and definitely depends on context. Assuming you accepted his comment and said nothing more and you started getting treated *negatively*, then by all means, they're trying to gaslight, or just trying to simply avoid confrontation. Or, they want to make fun of you.
But, let's say the same scenario happens but you don't get treated different and they still view you just as good as before (not preventing you from doing things in game), then it's definitely a harmless and innocent phrase.
The fact remains that slack is slack. Whether it's because you're slacking or because you're occupied and genuinely can't get to something, it doesn't make it wrong that there is slack. And if a team just jumps in to help, commenting on the existence of slack or not, then that's probably more just a sign that you're on a good team. They probably trust you pull your weight, they see that you're getting overloaded, and they simply take some stuff away, understanding that there is absolutely nothing negative from it. It's not the first time I've had people pick up my slack at work - and it's genuinely because we were NEWLY assigned 2 projects that were "due five weeks ago", and we need to get them done now, despite already working on 3 projects also supposed to have been due yesterday. Oh, and then suddenly everything we did is wrong and we have to restart all of the projects.
None of us did anything wrong; but suddenly there is slack everywhere because of all the work. |
382,152 | >
> Broadly, the steps involved in establishing a full implementation can be separated as follows: analysing the application to be accelerated; understanding the logic, compute, and data dependencies; and then enabling this on a chip given the constraints of real hardware.
>
>
>
Is this correct usage of semicolons? I'm not concerned about them following the colon; I'm only concerned about using it in a list where only one individual element - as far as the semicolons are concerned - is itself comma-separated. Also slightly concerned about how the list being sequential affects the sentence flow.
Many thanks in advance for any help/advice. | 2017/04/06 | [
"https://english.stackexchange.com/questions/382152",
"https://english.stackexchange.com",
"https://english.stackexchange.com/users/229009/"
] | I'm an American.
If someone is "picking up your slack," they are taking on the work that you are not doing. There's not an inherent connotation about *why* you aren't doing that work. In many cases, you have slack to be picked up because you're overloaded and too busy doing something of higher priority.
To my knowledge, "picking up slack" and "slacking" do not have a relationship.
The ([real, this time](http://etymonline.com/index.php?term=slack&allowed_in_frame=0); n.1) origin of the phrase comes from sailing. When a sailor is pulling on a "line" (a rope), there's likely to be some amount of slack in the line he's putting down. Another sailor is needed to "pick up the slack" and ensure the line doesn't get tangled. In this context, "picking up the slack" is purely about teamwork; the first sailor is **unable** to pick up that slack because they are busy adjusting the line, so the second sailor is needed. | This sounds like a conflict of one's experiences clouding one's definition. As explained here, it's generally neutral, though it's not the first time people have steered the phrase negatively. The fact remains that it's not inherently negative and definitely depends on context. Assuming you accepted his comment and said nothing more and you started getting treated *negatively*, then by all means, they're trying to gaslight, or just trying to simply avoid confrontation. Or, they want to make fun of you.
But, let's say the same scenario happens but you don't get treated different and they still view you just as good as before (not preventing you from doing things in game), then it's definitely a harmless and innocent phrase.
The fact remains that slack is slack. Whether it's because you're slacking or because you're occupied and genuinely can't get to something, it doesn't make it wrong that there is slack. And if a team just jumps in to help, commenting on the existence of slack or not, then that's probably more just a sign that you're on a good team. They probably trust you pull your weight, they see that you're getting overloaded, and they simply take some stuff away, understanding that there is absolutely nothing negative from it. It's not the first time I've had people pick up my slack at work - and it's genuinely because we were NEWLY assigned 2 projects that were "due five weeks ago", and we need to get them done now, despite already working on 3 projects also supposed to have been due yesterday. Oh, and then suddenly everything we did is wrong and we have to restart all of the projects.
None of us did anything wrong; but suddenly there is slack everywhere because of all the work. |
391 | I have worked in environments where I was either an individual contributor or a lone techie without much need for team effort.
As I go further in my career, I find it necessary to branch out to positions which have more structured teams and need a significant amount of team effort. I also believe that this is a vital career development effort a person can put forth to happen upon better opportunities.
Neither is this a question about how to become a team-lead nor am I looking to find out how to acquire leadership skills. I am interested in learning how to become a team contributor, what ways one can become more involved, and how to become an effective participant in team efforts. | 2012/04/11 | [
"https://workplace.stackexchange.com/questions/391",
"https://workplace.stackexchange.com",
"https://workplace.stackexchange.com/users/147/"
] | Lots of things to say here. First and probably the most important if you have been working on your own, your ideas are not the only good ones.
Further, rarely in a career do you join a team that is starting to build something new from scatch with **no** decisions made prior to your arrival. Expect that there will be decisons made about tools, architecture, techniques, standards that you don't agree with. Sometimes these descisions were made years earlier and are not subject to change as too much code would have to change to do so.
The person new to the team must first establish a reputation as someone who can accomplish things before trying to change the team or the way they do business. Until you have the respect of your peers and supervisors, you cannot effectively manage change. So when you first join a team, learn what they do and how they do it and establish yourself as a team player and valuable employee before trying to make people do things the way you want to.
I bring this up because usually this is the first issue people face when starting to work as a team, the loss of total control over what tools they use, how the software is architected and how to write code.
For instance if the team has a coding standard (which may or may not be formally written (but is generally apparent from the existing code when it is is informal), then follow it even if you don't like it. These standards make it easier for people to understand code they didn't write, so follow them. Insisting on doing this sort of stuff your way is the fast track to people not wanting to work with you.
Be aware that the time to argue for a change or a diffeernt way of doing things is before the decision has been made. You will get your chance later, have some patience at first.
Now how to get that respect and become a team player. First, do the tasks you are assigned to do and do them on time as much as possible and as well as the enviroment will allow you to. If you have meetings where software decisions are discussed (A planning meeting for a new project for instance), speak up with your ideas, but also listen respectfully to the ideas of others.
Talk to your team mates. Remeber that they may not have seen your resume and thus don't know what experience you have that might be valuable to them, so if you have expertise in something that is clearly on the horizon and someone else is stumped, offer some advice. But do it carefully, don't come off as a know-it-all.
Compliments to others can go a long way towards them accepting you as a part of the team. But make them genuine, people can spot a phony compliment a mile away.
Offer to do some of the tasks that are unpopular.
Learn where everything is and how to do most common tasks. Become the go-to person for domain knowledge or even how to submit a help desk request.
Take on the hard tasks if you feel you have the programming chops to do them, but don't be surprised if you have to prove yourself on easier things first before being allowed to do the harder more interesting things.
Be aware that you are now responsible for more than yourself. If you are having a problem and need help, ask for it. Don't let the team down by hiding problems or by pretending you are going to meet a deadline that you have no chance of making. If your delay will cause a delay for someone else, make sure they know well in advance. I can remember a project where we were all supposed to use something that one person was going to develop. He didn't ask questions of anyone else, he didn't let us know how he was getting along in the task and he didn't get it done which affected about 20 other things and made a lot of people certain to never recommend him or want towork with him in the future.
Treat people with respect, even those you personally do not like. To get respect, you have to give respect.
Learn the fine art of compromise. You can only get some of what you want by giving others some of what they want.
Have a positive, can-do attitude. And then translate that can-do into did-do. Nothing makes you a more valuable team memeber than the rest of the team knowing you will deliver.
Don't be defensive in code reviews (if other people will have to maintain your code and they will in a team, then they have a right to ask questions and try to make your code something they can understand) and don't be personally attacking when you do them for other people. Keep things professional. | From my experience:
* Feedback is alaways good. Ask other members of your team how can you help, request opinions and criticism etc... Be prepared for harsh comments that might happen; eventually you will learn to ignore or to make something positive out of them.
* The reverse is also true: give feedback. Encourage people to come to you and talk about their issues. Get everybody to be a voice and participate in decisions. Always try and find something positive about someone's work, then use this as an starting point on how his/her work can be improved.
* Always be honest and open with issues, but without pointing fingers or being condescending. Also, do not argue for the sake of it.
* Do not be afraid to speak up if someone is doing something wrong, time-wasting, hurtful (i.e. off-color humour, misbehaviour towards other people etc..) or harmful.
* Be patient, understanding and tolerant - develop those skills, not only for team work, they're useful for pretty much everywhere. |
391 | I have worked in environments where I was either an individual contributor or a lone techie without much need for team effort.
As I go further in my career, I find it necessary to branch out to positions which have more structured teams and need a significant amount of team effort. I also believe that this is a vital career development effort a person can put forth to happen upon better opportunities.
Neither is this a question about how to become a team-lead nor am I looking to find out how to acquire leadership skills. I am interested in learning how to become a team contributor, what ways one can become more involved, and how to become an effective participant in team efforts. | 2012/04/11 | [
"https://workplace.stackexchange.com/questions/391",
"https://workplace.stackexchange.com",
"https://workplace.stackexchange.com/users/147/"
] | Lots of things to say here. First and probably the most important if you have been working on your own, your ideas are not the only good ones.
Further, rarely in a career do you join a team that is starting to build something new from scatch with **no** decisions made prior to your arrival. Expect that there will be decisons made about tools, architecture, techniques, standards that you don't agree with. Sometimes these descisions were made years earlier and are not subject to change as too much code would have to change to do so.
The person new to the team must first establish a reputation as someone who can accomplish things before trying to change the team or the way they do business. Until you have the respect of your peers and supervisors, you cannot effectively manage change. So when you first join a team, learn what they do and how they do it and establish yourself as a team player and valuable employee before trying to make people do things the way you want to.
I bring this up because usually this is the first issue people face when starting to work as a team, the loss of total control over what tools they use, how the software is architected and how to write code.
For instance if the team has a coding standard (which may or may not be formally written (but is generally apparent from the existing code when it is is informal), then follow it even if you don't like it. These standards make it easier for people to understand code they didn't write, so follow them. Insisting on doing this sort of stuff your way is the fast track to people not wanting to work with you.
Be aware that the time to argue for a change or a diffeernt way of doing things is before the decision has been made. You will get your chance later, have some patience at first.
Now how to get that respect and become a team player. First, do the tasks you are assigned to do and do them on time as much as possible and as well as the enviroment will allow you to. If you have meetings where software decisions are discussed (A planning meeting for a new project for instance), speak up with your ideas, but also listen respectfully to the ideas of others.
Talk to your team mates. Remeber that they may not have seen your resume and thus don't know what experience you have that might be valuable to them, so if you have expertise in something that is clearly on the horizon and someone else is stumped, offer some advice. But do it carefully, don't come off as a know-it-all.
Compliments to others can go a long way towards them accepting you as a part of the team. But make them genuine, people can spot a phony compliment a mile away.
Offer to do some of the tasks that are unpopular.
Learn where everything is and how to do most common tasks. Become the go-to person for domain knowledge or even how to submit a help desk request.
Take on the hard tasks if you feel you have the programming chops to do them, but don't be surprised if you have to prove yourself on easier things first before being allowed to do the harder more interesting things.
Be aware that you are now responsible for more than yourself. If you are having a problem and need help, ask for it. Don't let the team down by hiding problems or by pretending you are going to meet a deadline that you have no chance of making. If your delay will cause a delay for someone else, make sure they know well in advance. I can remember a project where we were all supposed to use something that one person was going to develop. He didn't ask questions of anyone else, he didn't let us know how he was getting along in the task and he didn't get it done which affected about 20 other things and made a lot of people certain to never recommend him or want towork with him in the future.
Treat people with respect, even those you personally do not like. To get respect, you have to give respect.
Learn the fine art of compromise. You can only get some of what you want by giving others some of what they want.
Have a positive, can-do attitude. And then translate that can-do into did-do. Nothing makes you a more valuable team memeber than the rest of the team knowing you will deliver.
Don't be defensive in code reviews (if other people will have to maintain your code and they will in a team, then they have a right to ask questions and try to make your code something they can understand) and don't be personally attacking when you do them for other people. Keep things professional. | From, "The Fast Forward MBA in Project Management," it provides a great list of essential qualities of being a team player:
* Listen actively.
* Ask questions.
* Give constructive feedback. Don't express an opinion as a fact explain your reasons.
+ Awareness of body language and tone.
+ Appropriate humor.
+ Develop rapport with your team members.
+ Patience. |
291,451 | In deep learning, and it's application to computer vision, is it possible to tell what kind of features these two types of pooling extract? e.g. is it possible to say that max pool extracts edges? Can we say something similar regarding mean pooling?
P.S. feel free to recommend if stackoverflow is more suitable. | 2017/07/13 | [
"https://stats.stackexchange.com/questions/291451",
"https://stats.stackexchange.com",
"https://stats.stackexchange.com/users/25333/"
] | I wouldn't say the *either* extract features. Instead, it is the convolutional layers that construct/extract features, and the pooling layers *compress* them to a lower fidelity. The difference is in the way the compression happens, and what type of fidelity is retained:
* A max-pool layer compressed by taking the maximum activation in a block. If you have a block with mostly small activation, but a small bit of large activation, you will loose the information on the low activations. I think of this as saying "this type of feature was detected in this general area".
* A mean-pool layer compresses by taking the mean activation in a block. If large activations are balanced by negative activations, the overall compressed activations will look like no activation at all. On the other hand, you retain some information about low activations in the previous example. | my *opinion* is that max&mean pooling is nothing to do with the type of features, but with translation invariance.
Imagine learning to recognise an 'A' vs 'B' (no variation in A's and in B's pixels). First in a fixed position in the image. This can be done by a logistic regression (1 neuron): the weights end up being a template of the difference A - B.
Now what happens if you train to recognise on different locations in the image. You cannot do this with logistic regression, sweeping over the image (ie approximating a convolutional layer with one filter) and labelling all sweeps of the image A or B as appropriate, because learning from the different positions interferes - effectively you try to learn the average of A-B as A/B are passed across your filter - but this is just a blur.
with max pooling learning is only performed on the location of max activation (which is hopefully centred on the letter). I am not so sure about mean pooling - I would imagine that *more* learning (ie weight adjustment ) is done at the max activation location and that avoids the blurring)...
I would encourage you to just implement such a simple network with 2 classes and 1 filter for convolutional layer, then max/mean pooling and 1 output node and inspect the weights/performance. |
198,343 | I can't hear sound in my iPhone. I can't listen to music or any sound on my device. I'm frustrated trying to solve this. | 2015/07/31 | [
"https://apple.stackexchange.com/questions/198343",
"https://apple.stackexchange.com",
"https://apple.stackexchange.com/users/138575/"
] | Hi and welcome to Ask Different!
A few things to try:
* Make sure the mute switch is off and working - on the top left side of the phone there's a switch that has a red backing if it's turned on. If it's showing red, toggle it back, and your sound will come back on. Simple :)
* If that does nothing, make sure the switch works. Toggle it back and forth a few times, there should be a popup indicating that sound is now muted. If nothing appears on the screen when the switch is toggled, the switch is probably broken, and you'll need to talk to Apple or your carrier's insurance about getting it fixed.
* I'm guessing you already tried this, but there are two volume settings on iOS, one for the ringer and one for apps and music. If you just use the volume rocker in most places, your ringer volume changes. If you use it while music or sound is playing, app volume changes. Make sure that your music/sound volume is up. | Do you hear sound with EarPods in? If so, it's likely that your speaker has gone out and needs to be replaced. |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Thanks a lot to Shog9 and Robusto-san, and many of my Senpais and friends who voted for me on this election. To be honest, I didn’t fancy I can win. However, my motivation for candidacy this time was to encourage non-native English speaking users in this site and many of English enthusiast friends around me by challenging this unique opportunity, and by proving that even a non-native English learner who’s never lived in English-speaking countries, no matter how he is old, can get a fair opportunity and place for giving a say about the improvement and advancement of the site abreast with native speaking Senpais and colleagues.
I’m sure my peers in local English learning circles would join me in aknowledging my fortunate election result. Again many thanks for your support and continued assistance in improving English language proficiency. | Right mods!! Exactly as I voted!! Congratulations!! Moderate!! |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Best of luck to our new and continuing moderators. You are a thoughtful and judicious group, and I'm confident that all of you will do fine work for EL&U.
To the nonwinning candidates, I just want to say thanks for running, and please stay as active and engaged in the site as you've been in the past. Two of you were my top two choices, and I know that you would have done a great job as well.
I enjoy this site immensely, but I think that it has room for improvement, most notably in encouraging newer users to ask and answer legitimate questions. One way to help make that happen is to recognize promising questions and answers with upvotes—and I plan to be less parsimonious in that regard than I've been in the past, especially in responding to users for whom an upvote can be quite encouraging and a downvote quite discouraging.
Ultimately our shared goal is a site full of good questions and good answers, not victory in a never-ending race for points. | Congratulation winners!!. I hope that you'd bring more enthusiasm to this group by providing your valuable knowledge to English learners. Please make this site more interactive and well discipline by taking pragmatic measures.
All the very best for your future endeavors. |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Congrats to all y'all! . . . . . . | Right mods!! Exactly as I voted!! Congratulations!! Moderate!! |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Congratulations and best of luck to our three new moderators. My simpathy to those who weren't elected but, I'm sure, love EL&U and will continue to give their much needed contribution. | Congratulation winners!!. I hope that you'd bring more enthusiasm to this group by providing your valuable knowledge to English learners. Please make this site more interactive and well discipline by taking pragmatic measures.
All the very best for your future endeavors. |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Congratulations and best of luck to our three new moderators. My simpathy to those who weren't elected but, I'm sure, love EL&U and will continue to give their much needed contribution. | **We wuz robbed!**
As your first task, should you choose to accept it, you will monitor, comment upon, edit as necessary, close, should it be required, all responses as to the etymology of this exclamatory phrase (as well as decide as to the appropriateness of follow-on questions as to its relative regional and national usage). |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Congrats to all y'all! . . . . . . | Best of luck to our new and continuing moderators. You are a thoughtful and judicious group, and I'm confident that all of you will do fine work for EL&U.
To the nonwinning candidates, I just want to say thanks for running, and please stay as active and engaged in the site as you've been in the past. Two of you were my top two choices, and I know that you would have done a great job as well.
I enjoy this site immensely, but I think that it has room for improvement, most notably in encouraging newer users to ask and answer legitimate questions. One way to help make that happen is to recognize promising questions and answers with upvotes—and I plan to be less parsimonious in that regard than I've been in the past, especially in responding to users for whom an upvote can be quite encouraging and a downvote quite discouraging.
Ultimately our shared goal is a site full of good questions and good answers, not victory in a never-ending race for points. |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Congrats to all y'all! . . . . . . | Congrats new mods. I am not sure who I even voted for but thought everyone would do a good job. [I was on a beach fully under the influence with the sun glaring on an Ipad and the interface for SE isn't the best sometimes let alone my choppy connection with the island's wifi]
But I think I voted for phenry because he is militant. Stay thirsty! |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Thanks a lot to Shog9 and Robusto-san, and many of my Senpais and friends who voted for me on this election. To be honest, I didn’t fancy I can win. However, my motivation for candidacy this time was to encourage non-native English speaking users in this site and many of English enthusiast friends around me by challenging this unique opportunity, and by proving that even a non-native English learner who’s never lived in English-speaking countries, no matter how he is old, can get a fair opportunity and place for giving a say about the improvement and advancement of the site abreast with native speaking Senpais and colleagues.
I’m sure my peers in local English learning circles would join me in aknowledging my fortunate election result. Again many thanks for your support and continued assistance in improving English language proficiency. | Congratulations and best of luck to our three new moderators. My simpathy to those who weren't elected but, I'm sure, love EL&U and will continue to give their much needed contribution. |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Thanks a lot to Shog9 and Robusto-san, and many of my Senpais and friends who voted for me on this election. To be honest, I didn’t fancy I can win. However, my motivation for candidacy this time was to encourage non-native English speaking users in this site and many of English enthusiast friends around me by challenging this unique opportunity, and by proving that even a non-native English learner who’s never lived in English-speaking countries, no matter how he is old, can get a fair opportunity and place for giving a say about the improvement and advancement of the site abreast with native speaking Senpais and colleagues.
I’m sure my peers in local English learning circles would join me in aknowledging my fortunate election result. Again many thanks for your support and continued assistance in improving English language proficiency. | Congrats new mods. I am not sure who I even voted for but thought everyone would do a good job. [I was on a beach fully under the influence with the sun glaring on an Ipad and the interface for SE isn't the best sometimes let alone my choppy connection with the island's wifi]
But I think I voted for phenry because he is militant. Stay thirsty! |
4,899 | English Language & Usage's [3rd moderator election](https://english.stackexchange.com/election/3) has come to a close, the votes have been tallied, and the 3 new moderators are:
[](https://english.stackexchange.com/users/18696) [](https://english.stackexchange.com/users/3119) [](https://english.stackexchange.com/users/3559)
They'll be joining [the existing crew](https://english.stackexchange.com/users?tab=moderators) shortly — please thank them for volunteering, and share your assistance and advice with them as they learn the ropes!
For details on how the voting played out, you can download the election results [here](https://english.stackexchange.com/election/3), or [view a summary report online](http://www.opavote.org/results/6472855084597248/0). | 2014/06/24 | [
"https://english.meta.stackexchange.com/questions/4899",
"https://english.meta.stackexchange.com",
"https://english.meta.stackexchange.com/users/6437/"
] | Best of luck to our new and continuing moderators. You are a thoughtful and judicious group, and I'm confident that all of you will do fine work for EL&U.
To the nonwinning candidates, I just want to say thanks for running, and please stay as active and engaged in the site as you've been in the past. Two of you were my top two choices, and I know that you would have done a great job as well.
I enjoy this site immensely, but I think that it has room for improvement, most notably in encouraging newer users to ask and answer legitimate questions. One way to help make that happen is to recognize promising questions and answers with upvotes—and I plan to be less parsimonious in that regard than I've been in the past, especially in responding to users for whom an upvote can be quite encouraging and a downvote quite discouraging.
Ultimately our shared goal is a site full of good questions and good answers, not victory in a never-ending race for points. | **We wuz robbed!**
As your first task, should you choose to accept it, you will monitor, comment upon, edit as necessary, close, should it be required, all responses as to the etymology of this exclamatory phrase (as well as decide as to the appropriateness of follow-on questions as to its relative regional and national usage). |
293,379 | I am about to install Ubuntu and I have two choices, delete XP or allocate memory to each operating system. I have about 160GB on my hard drive, sda1 is the Dell Utility Partition, sda2 is Microsoft Windows XP Home Edition, and sda3 doesn't have a name. So how do I do this allocation so that there is enough memory for both OSs?
Right now sda1 has 57.7 MB, sda2 has 156.5 GB, and sda3 has 3.4GB. | 2011/06/06 | [
"https://superuser.com/questions/293379",
"https://superuser.com",
"https://superuser.com/users/-1/"
] | Since you're new to Linux, I suggest that you install VirtualBox, and install Ubuntu in a virtual machine. You can create a virtual disk of any size, but I recommend 20-30GB. Since you have more space available on your sda3 partition, you can have VBox create the disk there.
The reason that I suggest VirtualBox is that you will be less likely to mess up your Windows install, it's easy to work with, and if you mess up with Linux, it's easy to start over. | Yes you can save all your stuff, basically you pick a virtual HDD of a set size, which will be a file in your windows filesystem. A virtual machine is exactly what it sounds like, it emulates a machine. I highly recommend it to new comers to linux. |
293,379 | I am about to install Ubuntu and I have two choices, delete XP or allocate memory to each operating system. I have about 160GB on my hard drive, sda1 is the Dell Utility Partition, sda2 is Microsoft Windows XP Home Edition, and sda3 doesn't have a name. So how do I do this allocation so that there is enough memory for both OSs?
Right now sda1 has 57.7 MB, sda2 has 156.5 GB, and sda3 has 3.4GB. | 2011/06/06 | [
"https://superuser.com/questions/293379",
"https://superuser.com",
"https://superuser.com/users/-1/"
] | Since you're new to Linux, I suggest that you install VirtualBox, and install Ubuntu in a virtual machine. You can create a virtual disk of any size, but I recommend 20-30GB. Since you have more space available on your sda3 partition, you can have VBox create the disk there.
The reason that I suggest VirtualBox is that you will be less likely to mess up your Windows install, it's easy to work with, and if you mess up with Linux, it's easy to start over. | All though hard disk is a form of memory, the data capacity on a hard disk is by tradition referred as space, not memory. Data capacity on a RAM modules is referred as memory.
A hard disk can have 1 to 4 "primary" partitions.
One of these partitions can be an "extended" partition, which is special type of partition in which you can create any number of constituent "logical" partitions
1. I suggest you leave the Dell utility partition as it is. It probably is a primary partition.
2. Delete the sda2 and sda3 and create a massive extended partition in the remaining space. Create logical partitions inside your new sda2 extended partitions like this.
1. sda3 - NTFS 50 GB for Windows XP
2. sda4 - NTFS 4 MB for Windows swap (create custom page file here)
3. sda5 - Ext4 50 GB for Linux root.
4. sda6 - Swap 4 GB for Linux swap
5. sda7 - NTFS 30 GB for Windows data (move your My Documents here)
6. sda8 - Ext4 30 GB for Linux data (mount /home here) |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | Sound waves are pressure waves. In open air, the volume of air that you must move to produce a given compression is proportional to wavelength. But in a confined space much less than a wavelength in extent, only the air in that confined space needs to be moved, so you get the same compression for the same air motion, independent of wavelength. | So, I'm no expert but I read about this some years back in a fascinating book called [How Music Works](https://rads.stackoverflow.com/amzn/click/com/B0047Y16KS) (not David Byrne's), and it explained how sounds of a given fundamental frequency (its first harmonic, the frequency we would use to identify a particular note), will be recognized by our brain as the fundamental frequency, even if only the other harmonics are present, while the first is missing, which can allow small speakers with poor ability to reproduce low frequency sounds, to reproduce a low note without actually needing to reproduce the fundamental frequency.
The book uses A2 as an example because its fundamental frequency is 110Hz and it's a nice easy number. That makes its second harmonic 220Hz, and its third 330Hz, etc. And in a normal note, we hear all of these harmonics at once but in a way that repeats at 110Hz, so we can always identify it as that fundamental frequency.
Let me quote some of this before I completely mangle the explanation:
>
> All these vibrations (with lots of others) happen at the same time, as a complex dance which repeats a whole cycle at the lowest frequency involved – 110Hz.
>
>
>
Some of this is also explained on [wikipedia](https://en.wikipedia.org/wiki/Harmonic_series_(music))
>
> Pitched musical instruments are often based on an acoustic resonator such as a string or a column of air, which oscillates at numerous modes simultaneously. At the frequencies of each vibrating mode, waves travel in both directions along the string or air column, reinforcing and canceling each other to form standing waves. Interaction with the surrounding air causes audible sound waves, which travel away from the instrument. Because of the typical spacing of the resonances, these frequencies are mostly limited to integer multiples, or harmonics, of the lowest frequency, and such multiples form the harmonic series.
>
>
> **The musical pitch of a note is usually perceived as the lowest partial present (the fundamental frequency),** which may be the one created by vibration over the full length of the string or air column, or a higher harmonic chosen by the player.
>
>
>
So more from the book as to how this relates to the question at hand:
>
> Look at this collection of frequencies. Together they make up our old
> friend the note A2, which has a fundamental frequency of 110Hz:
>
>
> 110Hz, 220Hz, 330Hz, 440Hz, 550Hz, 660Hz, 770Hz etc.
>
>
> As you know, the timbre of an instrument is made up of the various loudnesses of these ingredients within the ripple shape. Whatever the mixture of ingredients, our brain recognizes this as a note with an overall frequency of 110Hz. Even if the loudest, strongest component was 330Hz, the overall pattern would only be completing its dance 110 times a second – so the fundamental frequency is 110Hz.
>
>
>
Further:
>
> Rather than just being a minor contributor to the sound it is possible that one of the harmonics could be completely silent. If, for example, the 770Hz frequency was completely absent, we would still hear the remaining harmonics as part of a note which has a fundamental frequency of 110Hz. This is because only 110Hz can be the head of a family which includes 110Hz, 220Hz, 330Hz etc. We could have several of the harmonics silent – and still the fundamental frequency would be 110Hz.
>
>
> Now the odd bit: we can even remove the first harmonic, the fundamental – 110Hz – and the fundamental pitch of the note we hear would still be 110Hz. This sounds a little insane but it’s perfectly true. If you hear the following collection of frequencies: 220Hz, 330Hz, 440Hz, 550Hz, 660Hz, 770Hz etc. **you will hear it as a note with a fundamental frequency of 110Hz, even though the sound does not contain that frequency**.
>
>
>
And bringing it together:
>
> Nowadays it is possible to get ridiculously low frequencies out of small speakers by utilizing the ‘missing fundamental’ idea. Let’s say your speaker won’t do much at frequencies of less than 90Hz, but you want to hear the note A1 clearly – and it has a frequency of 55Hz. **If you feed the harmonics of 55Hz to your speaker without the fundamental (i.e. 110Hz, 165Hz, 220Hz, 275Hz) you will hear 55Hz loud and clear even though the lowest frequency at which your speaker is moving is 110Hz.**
>
>
> |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | My guess is that an important thing here are near-field effects.
Part of the problem for bass emission from small speakers is the effect of [acoustic short circuiting](https://en.wikipedia.org/wiki/Acoustic_short_circuit). As the membrane moves, the air moves *around* the membrane, cancelling the emission in the far field.
(Bass reflex boxes are a way to mitigate this limitation).
Headphones mitigate such by having damping material in the way of the acoustic short circuit. (Like the ear in the case of in-ear speakers, or the muff for normal headphones.) Additionally the distance between the ear and the speaker is on the scale of the size of the membrane, and on those short distances the near-field components of the acoustic field (that fall off with higher powers than $1/r^2$). This is the particle movement that is causing the acoustical short circuit – it falls off fast with increasing distance, but it contributes to the pressure close to the membrane.
The length scale where the near-field effects are relevant is related to the wave length – so the length scales at which the near-field effects are relevant is different for the high frequency and the low frequency parts. | To try to summarize what others have said:
High frequencies require a speaker to pressurize small amounts of air quickly. Low frequencies require a speaker to pressurize lots of air more slowly. A headphone speaker handles both jobs for the small volume of air in your ear canal. However, in a large space, you have to move much more air, which means you need larger speakers for low tones. But those speakers aren’t great at moving fast, so you also need small speakers for the high tones.
Fall-off over distance is not particularly relevant in either scenario. |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | Sound waves are pressure waves. In open air, the volume of air that you must move to produce a given compression is proportional to wavelength. But in a confined space much less than a wavelength in extent, only the air in that confined space needs to be moved, so you get the same compression for the same air motion, independent of wavelength. | My guess is that an important thing here are near-field effects.
Part of the problem for bass emission from small speakers is the effect of [acoustic short circuiting](https://en.wikipedia.org/wiki/Acoustic_short_circuit). As the membrane moves, the air moves *around* the membrane, cancelling the emission in the far field.
(Bass reflex boxes are a way to mitigate this limitation).
Headphones mitigate such by having damping material in the way of the acoustic short circuit. (Like the ear in the case of in-ear speakers, or the muff for normal headphones.) Additionally the distance between the ear and the speaker is on the scale of the size of the membrane, and on those short distances the near-field components of the acoustic field (that fall off with higher powers than $1/r^2$). This is the particle movement that is causing the acoustical short circuit – it falls off fast with increasing distance, but it contributes to the pressure close to the membrane.
The length scale where the near-field effects are relevant is related to the wave length – so the length scales at which the near-field effects are relevant is different for the high frequency and the low frequency parts. |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | There are a few reasons why small speakers have trouble creating bass.
1. Bass is directly proportional to the amount of air the speaker can
move. So you want a large cone that can move a large distance. That's
hard to package in small box.
2. A conventional cone loudspeaker has actually two sound sources: the front of the cone creates positive pressure while at the same time the rear of the cone creates negative pressure. These two pressures need to be separated otherwise they cancel each other. That's why you put a bass speaker in a box. The box contains the pressure from the back of the cone. That also means that the speaker needs to compress the air in the box and the air will push back. The smaller the air volume in the box, the harder it will push back and the more force is required to compress it. Interestingly enough, a small speaker spends a large part of it's energy to compress air in the box, not radiating sound to the outside world (which takes a lot less energy).
3. Loudspeakers create a spherical wave where the sound pressure falls proportional to the distance. They are very loud when you are very close, but the sound pressure drops VERY quickly as you move away.
Headphones and ear phones have the advantage that they are very close to the ear, so you are operating still in the "VERY loud" part of the distance dependency.
Sitting on the head reverses the "box" problem. You only need to pressurize a very small volume while you can vent the back pressure to the outside world which is huger by comparison. Since the volume is so small, there is only very little movement required. One way to think about this: room speaker needs to pressurize the entire room, an ear phone only needs to pressurize the tiny little volume inside the air canal.
The bass response for both headphones and ear phones is very sensitive to the air seal between the ear cup or ear bud to the body. Any leakage will result in some cancellation of the front and back pressure. There are ways around this with so-called "open headphone", but that's probably to deep for this answer. | Just imagine you are small person standing in front of the earpiece. It will produce bass sounds as well as high frequency sounds. If you go stand very near the piece, the bass sounds will be felt by your stomach like a large-sized speaker in the world of grown-ups does. But because of the relative large motions involved in bass sound, it will dissipate its energy fast in air. That's why you don't hear the bass if you hold the earpiece far from your ear. Just as the bass sounds are gone or faded down if you listen to normal sized music boxes from far away. |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | My guess is that an important thing here are near-field effects.
Part of the problem for bass emission from small speakers is the effect of [acoustic short circuiting](https://en.wikipedia.org/wiki/Acoustic_short_circuit). As the membrane moves, the air moves *around* the membrane, cancelling the emission in the far field.
(Bass reflex boxes are a way to mitigate this limitation).
Headphones mitigate such by having damping material in the way of the acoustic short circuit. (Like the ear in the case of in-ear speakers, or the muff for normal headphones.) Additionally the distance between the ear and the speaker is on the scale of the size of the membrane, and on those short distances the near-field components of the acoustic field (that fall off with higher powers than $1/r^2$). This is the particle movement that is causing the acoustical short circuit – it falls off fast with increasing distance, but it contributes to the pressure close to the membrane.
The length scale where the near-field effects are relevant is related to the wave length – so the length scales at which the near-field effects are relevant is different for the high frequency and the low frequency parts. | Just imagine you are small person standing in front of the earpiece. It will produce bass sounds as well as high frequency sounds. If you go stand very near the piece, the bass sounds will be felt by your stomach like a large-sized speaker in the world of grown-ups does. But because of the relative large motions involved in bass sound, it will dissipate its energy fast in air. That's why you don't hear the bass if you hold the earpiece far from your ear. Just as the bass sounds are gone or faded down if you listen to normal sized music boxes from far away. |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | There are a few reasons why small speakers have trouble creating bass.
1. Bass is directly proportional to the amount of air the speaker can
move. So you want a large cone that can move a large distance. That's
hard to package in small box.
2. A conventional cone loudspeaker has actually two sound sources: the front of the cone creates positive pressure while at the same time the rear of the cone creates negative pressure. These two pressures need to be separated otherwise they cancel each other. That's why you put a bass speaker in a box. The box contains the pressure from the back of the cone. That also means that the speaker needs to compress the air in the box and the air will push back. The smaller the air volume in the box, the harder it will push back and the more force is required to compress it. Interestingly enough, a small speaker spends a large part of it's energy to compress air in the box, not radiating sound to the outside world (which takes a lot less energy).
3. Loudspeakers create a spherical wave where the sound pressure falls proportional to the distance. They are very loud when you are very close, but the sound pressure drops VERY quickly as you move away.
Headphones and ear phones have the advantage that they are very close to the ear, so you are operating still in the "VERY loud" part of the distance dependency.
Sitting on the head reverses the "box" problem. You only need to pressurize a very small volume while you can vent the back pressure to the outside world which is huger by comparison. Since the volume is so small, there is only very little movement required. One way to think about this: room speaker needs to pressurize the entire room, an ear phone only needs to pressurize the tiny little volume inside the air canal.
The bass response for both headphones and ear phones is very sensitive to the air seal between the ear cup or ear bud to the body. Any leakage will result in some cancellation of the front and back pressure. There are ways around this with so-called "open headphone", but that's probably to deep for this answer. | Sound waves are pressure waves. In open air, the volume of air that you must move to produce a given compression is proportional to wavelength. But in a confined space much less than a wavelength in extent, only the air in that confined space needs to be moved, so you get the same compression for the same air motion, independent of wavelength. |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | My guess is that an important thing here are near-field effects.
Part of the problem for bass emission from small speakers is the effect of [acoustic short circuiting](https://en.wikipedia.org/wiki/Acoustic_short_circuit). As the membrane moves, the air moves *around* the membrane, cancelling the emission in the far field.
(Bass reflex boxes are a way to mitigate this limitation).
Headphones mitigate such by having damping material in the way of the acoustic short circuit. (Like the ear in the case of in-ear speakers, or the muff for normal headphones.) Additionally the distance between the ear and the speaker is on the scale of the size of the membrane, and on those short distances the near-field components of the acoustic field (that fall off with higher powers than $1/r^2$). This is the particle movement that is causing the acoustical short circuit – it falls off fast with increasing distance, but it contributes to the pressure close to the membrane.
The length scale where the near-field effects are relevant is related to the wave length – so the length scales at which the near-field effects are relevant is different for the high frequency and the low frequency parts. | I challenge your premise that small/tiny speakers cannot produce low frequency sounds very well.
They can do so perfectly fine, just not at the volumes you need in free standing speakers.
When worn over or in your ear you do not need a lot of volume and that is the simple reason headphones and earphones produce good bass. |
697,399 | It's a well known fact that small/tiny speakers cannot produce low frequency sounds very well. Conversely, large speakers cannot produce high frequency sounds very well. Hence the need for tweeters and woofers in your speaker systems.
But, how do the tiny speakers inside headphones and earphones produce good bass when placed over/in the ears? (I must add that not all of them do) | 2022/03/03 | [
"https://physics.stackexchange.com/questions/697399",
"https://physics.stackexchange.com",
"https://physics.stackexchange.com/users/66272/"
] | Sound waves are pressure waves. In open air, the volume of air that you must move to produce a given compression is proportional to wavelength. But in a confined space much less than a wavelength in extent, only the air in that confined space needs to be moved, so you get the same compression for the same air motion, independent of wavelength. | To try to summarize what others have said:
High frequencies require a speaker to pressurize small amounts of air quickly. Low frequencies require a speaker to pressurize lots of air more slowly. A headphone speaker handles both jobs for the small volume of air in your ear canal. However, in a large space, you have to move much more air, which means you need larger speakers for low tones. But those speakers aren’t great at moving fast, so you also need small speakers for the high tones.
Fall-off over distance is not particularly relevant in either scenario. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | **Disease**
It's been wiping out lifeforms for millions of years. It can be frozen in glaciers and permafrost. It could wipe out humanity and then die out leaving no trace except for more frozen sources preserving it.
Currently humanity is finding new viruses still viable in the melting permafrost due to global warming.
A disease that is fast spreading and 100% fatal with no known cure would cause the unaffected to flee the planet.
See [Arctic Meltdown](http://discovermagazine.com/2018/jun/something-stirs) | **It was an unexpected move.**
Someone stored the crystals abit too close to the main power lines on their ship. When they turned their ship on up for a sub-orbital hop around the planet the crystal was powered up and activated. It then sent then ship though hyperspace to their destination. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | **Pollen.**
This is produced by plants seasonally of-course, usually once a year for a short period, sometimes only during the heat of the day when a specific temperature is hit.
The effects of this particular pollen are profound, hallucinations, visions and reckless behaviour in the vast percentage of the population. The effect is indiscreet sexual relationships, risk taking behaviour and lack of focus on things necessary for survival. This generally de-stabilises society and makes life difficult for everyone, people become desperate.
In a small percentage of the population, the force-sensitive ones (hell, who knows, maybe the pollen infected them with the midichlorians) it gives them all the same visions (or *parts* of the same visions of their future). When these people start to realise their common visions, they start to put the picture together - a vision of Corruscant - and the way to get there. These gifted individuals band together and lead the way for the whole population to travel to the new galaxy.
Their return leads to the same symptoms for much of the population, but the force-gifted ones, where will the force lead them, what is the force's will now 50,000 years later? | Economics
There is no valuable resources on Nu Terra, but plenty on Coruscant.
Once the crystals were discovered and enabled the humans to travel to and from Coruscant, the first to go there and return returned with unimaginable riches in gemstones, minerals, precious metals or other things that are highly valuable (or useful). The local environment is perfect for settlement, maybe the plants on Coruscant is directly edible/bears edible fruits, the animals are docile and delicious, and the land is exceptionally arable
At the same time, except for being marginally habitatable, Nu Terra does not offer even the most basic resources to build any permanent settlements or anything that could sustain them, maybe the plants their is not edible, and agriculture may be difficult due to the local conditions, or just because there wasn't any metal ores to replace whatever (very limited) tools the human colonists have brought with them.
Therefore, because there is a huge drive to develop industry and obtain resources, and for general quality of life, the humans quickly abandoned Nu Terra to settle Coruscant, they may even be forced to look for resources there because the supplies they brought there won't last more than a month.
Small settlements will last a while, as you can bring resources from Coruscant back to Nu Terra, just not very efficient. It's just better to do the mining and processing/manufacturing on the same planet, which means that there is no back and forth movement.
As a lack of usable resources does not go away with time, it certainly will last for time far longer than 50000 years, and still be present when the characters return. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | Economics
There is no valuable resources on Nu Terra, but plenty on Coruscant.
Once the crystals were discovered and enabled the humans to travel to and from Coruscant, the first to go there and return returned with unimaginable riches in gemstones, minerals, precious metals or other things that are highly valuable (or useful). The local environment is perfect for settlement, maybe the plants on Coruscant is directly edible/bears edible fruits, the animals are docile and delicious, and the land is exceptionally arable
At the same time, except for being marginally habitatable, Nu Terra does not offer even the most basic resources to build any permanent settlements or anything that could sustain them, maybe the plants their is not edible, and agriculture may be difficult due to the local conditions, or just because there wasn't any metal ores to replace whatever (very limited) tools the human colonists have brought with them.
Therefore, because there is a huge drive to develop industry and obtain resources, and for general quality of life, the humans quickly abandoned Nu Terra to settle Coruscant, they may even be forced to look for resources there because the supplies they brought there won't last more than a month.
Small settlements will last a while, as you can bring resources from Coruscant back to Nu Terra, just not very efficient. It's just better to do the mining and processing/manufacturing on the same planet, which means that there is no back and forth movement.
As a lack of usable resources does not go away with time, it certainly will last for time far longer than 50000 years, and still be present when the characters return. | **It was an unexpected move.**
Someone stored the crystals abit too close to the main power lines on their ship. When they turned their ship on up for a sub-orbital hop around the planet the crystal was powered up and activated. It then sent then ship though hyperspace to their destination. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | Very alien aliens
=================
The planet looked unoccupied during the first scouting missions, but there was a previous owner and he attacked them after while or send an ultimatum. Maybe its an AI or hivemind which has merged itself with the biosphere. Or some ancient sleepers like the Necrons or Cthulhu, whose vault were hard to spot in the beginning.
Maybe those ancients even gave them the technology and told them never to come back. Now your protagonist has come back. | It was always your second choice
--------------------------------
Your scientists already had scans of Coruscant (somehow). These scans show it as developing as a paradise world - in fact, due to light-lag, it probably already is. By comparison, Nu Terra is *awful*. Humanity can just about eke out a living, but it's hard going.
On the other hand, the time and effort required to reach Coruscant was deemed far too much. Nu Terra is within range, we can all get there without too much difficulty. And we need to bail **fast**, before the oceans boil and we all die.
But, once you get to Nu Terra, someone starts experimenting with these weird new crystals. They figure out how to grow them, they work out how to use them for FTL scanning and communications (and, *wow*, Coruscant looks even better than we expected), and then someone manages to create an **FTL Hyperdrive** with them.
Suddenly, Coruscant isn't generations away. In fact, recharge the Cryopods we used to get to Nu Terra, and **we** can be the first to set foot on Paradise. We landed barely a month ago - most of the cargo hasn't been unloaded yet. And it certainly beats scrounging the mud-plains for bogworms to eat again.
When, whenever how long later, your characters return, the planted crops and the animals that weren't rounded back up have spread, making the planet... *slightly* more hospitable. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | **Disease**
It's been wiping out lifeforms for millions of years. It can be frozen in glaciers and permafrost. It could wipe out humanity and then die out leaving no trace except for more frozen sources preserving it.
Currently humanity is finding new viruses still viable in the melting permafrost due to global warming.
A disease that is fast spreading and 100% fatal with no known cure would cause the unaffected to flee the planet.
See [Arctic Meltdown](http://discovermagazine.com/2018/jun/something-stirs) | If it is Star Wars universe, than the answer is obvious. The Force. The Dark Side of It.
Nu Terra has a huge lot of those "force crystals" and is evercorrupted with Dark and slowly corrupts everyone who lives there. It can even have evil "force specter"'s civilisation hidden on it! A *huge* plot engine! |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | **Pollen.**
This is produced by plants seasonally of-course, usually once a year for a short period, sometimes only during the heat of the day when a specific temperature is hit.
The effects of this particular pollen are profound, hallucinations, visions and reckless behaviour in the vast percentage of the population. The effect is indiscreet sexual relationships, risk taking behaviour and lack of focus on things necessary for survival. This generally de-stabilises society and makes life difficult for everyone, people become desperate.
In a small percentage of the population, the force-sensitive ones (hell, who knows, maybe the pollen infected them with the midichlorians) it gives them all the same visions (or *parts* of the same visions of their future). When these people start to realise their common visions, they start to put the picture together - a vision of Corruscant - and the way to get there. These gifted individuals band together and lead the way for the whole population to travel to the new galaxy.
Their return leads to the same symptoms for much of the population, but the force-gifted ones, where will the force lead them, what is the force's will now 50,000 years later? | Relics of an ancient civilization. Think of [the Reapers & Protheans from the Mass Effect universe.](https://masseffect.fandom.com/wiki/Mars)
They land, all seems well. Ruins are eventually found, once activated it displays a message of inpending doom. The galaxy cleaning squad is coming to town really soon. Leaders keep it under wraps, scientist panic and go public. Civilization panics. One techy finds the crystal, another finds out where the previous owners of the planet fled to: Coruscant. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | Economics
There is no valuable resources on Nu Terra, but plenty on Coruscant.
Once the crystals were discovered and enabled the humans to travel to and from Coruscant, the first to go there and return returned with unimaginable riches in gemstones, minerals, precious metals or other things that are highly valuable (or useful). The local environment is perfect for settlement, maybe the plants on Coruscant is directly edible/bears edible fruits, the animals are docile and delicious, and the land is exceptionally arable
At the same time, except for being marginally habitatable, Nu Terra does not offer even the most basic resources to build any permanent settlements or anything that could sustain them, maybe the plants their is not edible, and agriculture may be difficult due to the local conditions, or just because there wasn't any metal ores to replace whatever (very limited) tools the human colonists have brought with them.
Therefore, because there is a huge drive to develop industry and obtain resources, and for general quality of life, the humans quickly abandoned Nu Terra to settle Coruscant, they may even be forced to look for resources there because the supplies they brought there won't last more than a month.
Small settlements will last a while, as you can bring resources from Coruscant back to Nu Terra, just not very efficient. It's just better to do the mining and processing/manufacturing on the same planet, which means that there is no back and forth movement.
As a lack of usable resources does not go away with time, it certainly will last for time far longer than 50000 years, and still be present when the characters return. | If it is Star Wars universe, than the answer is obvious. The Force. The Dark Side of It.
Nu Terra has a huge lot of those "force crystals" and is evercorrupted with Dark and slowly corrupts everyone who lives there. It can even have evil "force specter"'s civilisation hidden on it! A *huge* plot engine! |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | **Pollen.**
This is produced by plants seasonally of-course, usually once a year for a short period, sometimes only during the heat of the day when a specific temperature is hit.
The effects of this particular pollen are profound, hallucinations, visions and reckless behaviour in the vast percentage of the population. The effect is indiscreet sexual relationships, risk taking behaviour and lack of focus on things necessary for survival. This generally de-stabilises society and makes life difficult for everyone, people become desperate.
In a small percentage of the population, the force-sensitive ones (hell, who knows, maybe the pollen infected them with the midichlorians) it gives them all the same visions (or *parts* of the same visions of their future). When these people start to realise their common visions, they start to put the picture together - a vision of Corruscant - and the way to get there. These gifted individuals band together and lead the way for the whole population to travel to the new galaxy.
Their return leads to the same symptoms for much of the population, but the force-gifted ones, where will the force lead them, what is the force's will now 50,000 years later? | It was always your second choice
--------------------------------
Your scientists already had scans of Coruscant (somehow). These scans show it as developing as a paradise world - in fact, due to light-lag, it probably already is. By comparison, Nu Terra is *awful*. Humanity can just about eke out a living, but it's hard going.
On the other hand, the time and effort required to reach Coruscant was deemed far too much. Nu Terra is within range, we can all get there without too much difficulty. And we need to bail **fast**, before the oceans boil and we all die.
But, once you get to Nu Terra, someone starts experimenting with these weird new crystals. They figure out how to grow them, they work out how to use them for FTL scanning and communications (and, *wow*, Coruscant looks even better than we expected), and then someone manages to create an **FTL Hyperdrive** with them.
Suddenly, Coruscant isn't generations away. In fact, recharge the Cryopods we used to get to Nu Terra, and **we** can be the first to set foot on Paradise. We landed barely a month ago - most of the cargo hasn't been unloaded yet. And it certainly beats scrounging the mud-plains for bogworms to eat again.
When, whenever how long later, your characters return, the planted crops and the animals that weren't rounded back up have spread, making the planet... *slightly* more hospitable. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | **Pollen.**
This is produced by plants seasonally of-course, usually once a year for a short period, sometimes only during the heat of the day when a specific temperature is hit.
The effects of this particular pollen are profound, hallucinations, visions and reckless behaviour in the vast percentage of the population. The effect is indiscreet sexual relationships, risk taking behaviour and lack of focus on things necessary for survival. This generally de-stabilises society and makes life difficult for everyone, people become desperate.
In a small percentage of the population, the force-sensitive ones (hell, who knows, maybe the pollen infected them with the midichlorians) it gives them all the same visions (or *parts* of the same visions of their future). When these people start to realise their common visions, they start to put the picture together - a vision of Corruscant - and the way to get there. These gifted individuals band together and lead the way for the whole population to travel to the new galaxy.
Their return leads to the same symptoms for much of the population, but the force-gifted ones, where will the force lead them, what is the force's will now 50,000 years later? | **It was an unexpected move.**
Someone stored the crystals abit too close to the main power lines on their ship. When they turned their ship on up for a sub-orbital hop around the planet the crystal was powered up and activated. It then sent then ship though hyperspace to their destination. |
152,728 | In the world I am building (based heavily on the Star Wars universe setting, but more historical), humanity first abandoned Earth to travel to another planet within their solar system, which they christened "Nu Terra".
But an unknown reason lead the humans to leave Nu Terra within a month, using a unique crystal found there to travel through hyperspace (in a rudimentary way) to another galaxy (via another source of the crystal), from which they moved to Coruscant.
My main issue is that humanity is extremely hardy and would be able to adapt to/kill most dangerous creatures.
Another issue is that the main characters will be travelling there towards the end of the storyline, so the planet itself has to be reasonably intact and still showing obvious signs of population.
So my question is this: Why would humanity be so hasty to get so far away from Nu Terra using such an untested method? What could possibly await anyone foolish enough to go there?
Notes:
* Nu Terra should appear normal (and abandoned) at first glance to anyone who travels there
* The danger should not be immediately obvious, but it should not take a character dying for them to know about it.
* The danger should still be present 50,000 years after the abandonment of the planet, when the characters return. | 2019/08/11 | [
"https://worldbuilding.stackexchange.com/questions/152728",
"https://worldbuilding.stackexchange.com",
"https://worldbuilding.stackexchange.com/users/67103/"
] | Very alien aliens
=================
The planet looked unoccupied during the first scouting missions, but there was a previous owner and he attacked them after while or send an ultimatum. Maybe its an AI or hivemind which has merged itself with the biosphere. Or some ancient sleepers like the Necrons or Cthulhu, whose vault were hard to spot in the beginning.
Maybe those ancients even gave them the technology and told them never to come back. Now your protagonist has come back. | Could it just be that Nu Terra is an awful place to live, but at least it's better than Earth?
i.e. Earth has been taken over by the Plague, has an imminent gamma-ray-burst / solar flare, is about to be demolished to make way for an interstellar motorway, or for whatever reason they've left for the only other known planet that could possibly support life, Nu Terra.
But conditions are very difficult there and while they can technically survive, survival isn't very nice - temperatures are too low, there isn't enough water for everyone, the air is difficult to breathe, food is hard to grow. Then they discover this crystal which allows transport to the relative paradise of Coruscant. |
16,907 | Should I keep a public development blog for a game I'm creating?
What are the benefits and issues of this activity? | 2011/09/05 | [
"https://gamedev.stackexchange.com/questions/16907",
"https://gamedev.stackexchange.com",
"https://gamedev.stackexchange.com/users/9736/"
] | You'll hear from a lot of people that ideas are worthless. Execution and passion are what matter.
There are a lot of good reasons to run a public development blog.
* It builds exposure for your game.
* It can start a community around the product.
* It builds exposure for you as a developer.
* It gives you exposure to people who might be interested in contributing.
* Blogging about what you're doing forces you to teach whatever concept you're trying to give to others, which is a really good learning tool.
* It forces you to finish something good enough to the point where you're willing to show it off on a regular basis
But there are also some bad ones
* You might give into bad critique too early if you have a special vision for what your game is going to be
* If you can't pull off what you're trying to accomplish, your failure is public.
* It takes time. If you are trying to build a community you need to provide a constant stream of content to keep people interested. That can take away from your development time.
* Somebody who has access to more resources (talent, money, etc) could "steal your idea".
Worrying about somebody "stealing your idea" isn't worth it. Once your game is finished, if it's any good, somebody's going to borrow from it. Even if it's an unabashed rip off they may do a better job than you can. The only thing hiding your idea gives you is a theoretical head start. It's better to just release something good and give it to an audience that wants it than trying to hide it away.
But at the end of the day you have to ask yourself why you'd want to start a blog. Can you actually pull off what you think you want to do? Are you focusing on the product itself or are you thinking a bit more ahead about what happens after the product is finished (either by shipping or getting shelved)? | I maintain a [blog](http://byte56.com) for my game, and I did wonder this same thing in the beginning. Although I wouldn't call my game original, there isn't another game just like it. Like many games (or even ideas in general), it's built on the shoulders of the giants before. It's all about how you implement your idea, not the idea its self. No one will be able to implement the idea like you can, especially since it's your idea and only you know all the details. If you're in development for the joy of making your ideas a reality, I think you'll find maintaining a blog very rewarding.
I find that blogging about features as I add them really makes me understand the features better. It's fun to get feedback about the game as you're making it. When people say how cool your game looks or that they want to play it, it really motivates you. Good luck! |
16,907 | Should I keep a public development blog for a game I'm creating?
What are the benefits and issues of this activity? | 2011/09/05 | [
"https://gamedev.stackexchange.com/questions/16907",
"https://gamedev.stackexchange.com",
"https://gamedev.stackexchange.com/users/9736/"
] | You'll hear from a lot of people that ideas are worthless. Execution and passion are what matter.
There are a lot of good reasons to run a public development blog.
* It builds exposure for your game.
* It can start a community around the product.
* It builds exposure for you as a developer.
* It gives you exposure to people who might be interested in contributing.
* Blogging about what you're doing forces you to teach whatever concept you're trying to give to others, which is a really good learning tool.
* It forces you to finish something good enough to the point where you're willing to show it off on a regular basis
But there are also some bad ones
* You might give into bad critique too early if you have a special vision for what your game is going to be
* If you can't pull off what you're trying to accomplish, your failure is public.
* It takes time. If you are trying to build a community you need to provide a constant stream of content to keep people interested. That can take away from your development time.
* Somebody who has access to more resources (talent, money, etc) could "steal your idea".
Worrying about somebody "stealing your idea" isn't worth it. Once your game is finished, if it's any good, somebody's going to borrow from it. Even if it's an unabashed rip off they may do a better job than you can. The only thing hiding your idea gives you is a theoretical head start. It's better to just release something good and give it to an audience that wants it than trying to hide it away.
But at the end of the day you have to ask yourself why you'd want to start a blog. Can you actually pull off what you think you want to do? Are you focusing on the product itself or are you thinking a bit more ahead about what happens after the product is finished (either by shipping or getting shelved)? | I've asked myself the same question a few weeks ago and decided to give it a try. I've started a small blog. It's more about game development in general and not so much about my game.
I'm a hobby game developer and indeed maintaing a blog takes a relevant part of my available time. Even worse sometimes writing blog posts makes more fun than continuing with my game.
On the other hand writing blog posts forces me to divide my projects in smaller components and keep focus on one problem at a time. A result was also an improved code quality and architecture.
Not sure if this blog will help me promoting my game, if it is finished. But a least it is fun. |
16,907 | Should I keep a public development blog for a game I'm creating?
What are the benefits and issues of this activity? | 2011/09/05 | [
"https://gamedev.stackexchange.com/questions/16907",
"https://gamedev.stackexchange.com",
"https://gamedev.stackexchange.com/users/9736/"
] | I maintain a [blog](http://byte56.com) for my game, and I did wonder this same thing in the beginning. Although I wouldn't call my game original, there isn't another game just like it. Like many games (or even ideas in general), it's built on the shoulders of the giants before. It's all about how you implement your idea, not the idea its self. No one will be able to implement the idea like you can, especially since it's your idea and only you know all the details. If you're in development for the joy of making your ideas a reality, I think you'll find maintaining a blog very rewarding.
I find that blogging about features as I add them really makes me understand the features better. It's fun to get feedback about the game as you're making it. When people say how cool your game looks or that they want to play it, it really motivates you. Good luck! | I've asked myself the same question a few weeks ago and decided to give it a try. I've started a small blog. It's more about game development in general and not so much about my game.
I'm a hobby game developer and indeed maintaing a blog takes a relevant part of my available time. Even worse sometimes writing blog posts makes more fun than continuing with my game.
On the other hand writing blog posts forces me to divide my projects in smaller components and keep focus on one problem at a time. A result was also an improved code quality and architecture.
Not sure if this blog will help me promoting my game, if it is finished. But a least it is fun. |
6,006,666 | I have setup an Apache server with mod\_wsgi, python\_sql, mysql and django.
Everything works fine, except the fact that if I make some code changes, they do not reflect immidiately, though I thing that everything is compiled on the fly when it comes to python/mod\_wsgi.
I have to shut down the server and come back again to see the changes.
Can someone point me to how hot-deployment can be achieved with the above setup??
Thanks,
Neeraj | 2011/05/15 | [
"https://Stackoverflow.com/questions/6006666",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/558243/"
] | This is covered by mod\_wsgi documentation. See:
<http://code.google.com/p/modwsgi/wiki/ReloadingSourceCode> | Just touching the wsgi file allways worked for me. |
58,832 | I'm renovating an unheated basement into a shop in a 1900's wood frame house. The plaster has long since come down and I'm looking to cover the joists.
The goal is to insulate a bit (the floor above is pretty cold in areas), reduce noise and dust (upwards), and make the room less dark.
Any suggestions between using basic sheetrock versus using panel board like:
<http://www.homedepot.com/p/Unbranded-Thrifty-White-32-sq-ft-Hardboard-Panel-Board-709106/202090193>
The basement is a little damp, but not enough to make surface rust on iron.
thank you!
steve | 2015/02/02 | [
"https://diy.stackexchange.com/questions/58832",
"https://diy.stackexchange.com",
"https://diy.stackexchange.com/users/32348/"
] | For insulation (either thermal or acoustic) use batt insulation between the joists (e.g. Roxull or other mineral wool type which seem better for sound insulation purposes).
For additional soundproofing and a finished ceiling, you may want to consider a resilient channel ceiling, with some kind of removeable tiles (e.g. <http://www.homedepot.ca/product/resilient-channel-x-12/968159>). This could lose you less ceiling height than a drop ceiling.
One consideration for having the ceiling be removeable is that you may want to run wires/pipes for the finished area of the house in future. | Drywall is thicker, so will act as a better sound deadener. Though in terms of shop noise, you're going to need a lot more than drywall to make the room somewhat soundproof. It's also going to be better rated for fire, if that's a concern.
It's also heavy. So that's the main con. It's a real pain to haul drywall into a basement. And then you need either a friend or a drywall lift to be able to attach it to the ceiling.
Based on your list of needs, have you considered an acoustical drop ceiling instead? |
33,415,645 | I need to open the app and show the user that a request is coming his way. Based on that, he may receive a phone call from my server (not VoIP though).
My requirement is similar to what happens during a VoIP call. Just that we won't necessarily be using VoIP. At least not right now. | 2015/10/29 | [
"https://Stackoverflow.com/questions/33415645",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2742906/"
] | No, iOS doesn't permit opening apps via remote notification.
What you get is the user can select a notification on their lock screen to unlock the phone then open the app. | No. User has to click on notification to open the app.
You can not open the app directly on the remote notification receiving. |
16,554 | I have created a shortcut to a single document. The home page icon carries the name of the file manager (Astro) that I used to create the shortcut (using [the method explained here](https://android.stackexchange.com/questions/12658/create-pdf-document-shortcuts-on-home-screen)).
I'd like to rename the icon to something more relevant so I can distinguish it from shortcuts to other documents or folders. Is there any way to do this? | 2011/12/06 | [
"https://android.stackexchange.com/questions/16554",
"https://android.stackexchange.com",
"https://android.stackexchange.com/users/10311/"
] | Partial Solution
1. Long press on home screen to activate shortcut launcher
2. Tap on Shortcut
3. Tap on Activites
4. Tap on file manager (Astro)
5. Navigate to file location (internal or external SD card)
6. Tap on target file
7. Accept (or amend) suggested shortcut name > OK
8. Named shortcut appears on home page under an icon for the associated app to display the document
To open the document, tap on the icon and then tap on the associated app in the menu . | Renaming shortcuts depends on what launcher you use. For example, with [GO Launcher](https://market.android.com/details?id=com.gau.go.launcherex), you simply hold down your finger on whatever you want to rename and a box pops up asking if you want to rename it.
The point being is that each launcher is different, but most are intuitive enough to where you just long click on the icon to rename it. |
7,290,630 | I have an existing website for schools and colleges management which is developed in ASP.NET,C# and SQL Server.
Now I am planning to support for the mobile applications (like basic models from Nokia/Samsung and for opera mobiles). I know the normal site we can access through some of the devices without any change, but needs to be optimized.
I am preparing another version which will be only few required fields and easy navigation for mobile. For that which method I need to use.
1. Normal ASPX files with optimized HTML code.
2. Or using WAP controls
3. Should I use HTML 5
Please help me to decide. | 2011/09/03 | [
"https://Stackoverflow.com/questions/7290630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/355226/"
] | I recommend using the HTML5 templates(includes [Modernizer](http://www.modernizr.com/)) that come with [ASP.NET MVC 3](http://www.asp.net/mvc/mvc3) and the [jQuery Mobile](http://jquerymobile.com/) framework. Let the jQuery Mobile framework do all the multi-device heavy lifting for you.
[jQuery Mobile Supported Devices](http://jquerymobile.com/gbs/) | 1. you can use normal aspx pages without any issue. only thing you need to optimize the file size.
2. you can develop better solution using HTML5 but only problem is, it is not supporting all the devices.[this is used html5](http://www.networkrail.co.uk/m/)
3. or just use any from [List of mobile frameworks](http://www.queness.com/post/6706/9-mobile-framework-to-kick-start-your-mobile-development-career) |
7,290,630 | I have an existing website for schools and colleges management which is developed in ASP.NET,C# and SQL Server.
Now I am planning to support for the mobile applications (like basic models from Nokia/Samsung and for opera mobiles). I know the normal site we can access through some of the devices without any change, but needs to be optimized.
I am preparing another version which will be only few required fields and easy navigation for mobile. For that which method I need to use.
1. Normal ASPX files with optimized HTML code.
2. Or using WAP controls
3. Should I use HTML 5
Please help me to decide. | 2011/09/03 | [
"https://Stackoverflow.com/questions/7290630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/355226/"
] | I recommend using the HTML5 templates(includes [Modernizer](http://www.modernizr.com/)) that come with [ASP.NET MVC 3](http://www.asp.net/mvc/mvc3) and the [jQuery Mobile](http://jquerymobile.com/) framework. Let the jQuery Mobile framework do all the multi-device heavy lifting for you.
[jQuery Mobile Supported Devices](http://jquerymobile.com/gbs/) | You can use normal ASP.NET Web Forms in conjunction with HTML5. Take a look at [HTML5Boilerplate](http://html5boilerplate.com/) which includes [Modernizr](http://www.modernizr.com/).
Use a combination of feature detection and [CSS Media Queries](http://www.w3.org/TR/css3-mediaqueries/) to serve up the appropriate files, layout and images for a particular mobile device.
Do not fall for "[Responsive Web Design](http://codersbarn.com/post/2011/08/26/Responsive-Web-Design-Stop-and-Think.aspx)" techniques that cost too much in terms of performance and esthetics (basically re-skinning desktop browser version of site and calling it "mobile-ready"); disclosure: this links to blog post from me. |
7,290,630 | I have an existing website for schools and colleges management which is developed in ASP.NET,C# and SQL Server.
Now I am planning to support for the mobile applications (like basic models from Nokia/Samsung and for opera mobiles). I know the normal site we can access through some of the devices without any change, but needs to be optimized.
I am preparing another version which will be only few required fields and easy navigation for mobile. For that which method I need to use.
1. Normal ASPX files with optimized HTML code.
2. Or using WAP controls
3. Should I use HTML 5
Please help me to decide. | 2011/09/03 | [
"https://Stackoverflow.com/questions/7290630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/355226/"
] | I recommend using the HTML5 templates(includes [Modernizer](http://www.modernizr.com/)) that come with [ASP.NET MVC 3](http://www.asp.net/mvc/mvc3) and the [jQuery Mobile](http://jquerymobile.com/) framework. Let the jQuery Mobile framework do all the multi-device heavy lifting for you.
[jQuery Mobile Supported Devices](http://jquerymobile.com/gbs/) | Use ASP.NET Mobile Controls: [ASP.NET Mobile Controls](http://www.asp.net/mobile)
.. [(i.e. How to add mobile pages to your asp.net site)](http://www.asp.net/learn/whitepapers/add-mobile-pages-to-your-aspnet-web-forms-mvc-application)
* You will build a few UI controls, in a short amount of time, specifically for all mobile devices and it will be a much faster and much better user experience on mobile devices.
+ The UI renders minimal HTML and you control what gets rendered, meaning much less bandwidth required. Even though I have a 4G phone, so many times we are in a building that does not give a 4G signal and I much prefer sites that have mobile-specific output.
+ The UI is mobile-specific, users will not have to zoom around the page left/right up/down and zoom in to be able to click buttons or elements that were made for viewing in 1024x768 or higher.
Users with the latest 4G and dual core phones, and that happen to have 4G connection at the moment can always switch their phones into 'full HTML version' if they want more functionality than what you build using the ASP.NET mobile controls. However, if you go the other route and adopt JQuery-based or HTML5 code, you are excluding all previous generation phones from accessing your web site at all in many cases (besides it being slower and not as good a user experience as mobile-specific rendering). Even if you decide to focus only on the latest phones, you will also have to deal with html rendering issues, cross browser compatibility, besides the slow and UI complexity issues.
Good luck. |
7,290,630 | I have an existing website for schools and colleges management which is developed in ASP.NET,C# and SQL Server.
Now I am planning to support for the mobile applications (like basic models from Nokia/Samsung and for opera mobiles). I know the normal site we can access through some of the devices without any change, but needs to be optimized.
I am preparing another version which will be only few required fields and easy navigation for mobile. For that which method I need to use.
1. Normal ASPX files with optimized HTML code.
2. Or using WAP controls
3. Should I use HTML 5
Please help me to decide. | 2011/09/03 | [
"https://Stackoverflow.com/questions/7290630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/355226/"
] | I recommend using the HTML5 templates(includes [Modernizer](http://www.modernizr.com/)) that come with [ASP.NET MVC 3](http://www.asp.net/mvc/mvc3) and the [jQuery Mobile](http://jquerymobile.com/) framework. Let the jQuery Mobile framework do all the multi-device heavy lifting for you.
[jQuery Mobile Supported Devices](http://jquerymobile.com/gbs/) | Using .NET Mobile Framework is always a good option as well as Web Forms which will appear on all mobile devices regardless of carrier/phone model, plus lots of phones support ajax, and other client side scripting that'll work. HTML5 is a growing standard though, and when more phones start supporting it, you'll reap tons of the new benefits.
Model View Controller is always good to follow. Allows for scalability and for components to be abstracted. |
7,290,630 | I have an existing website for schools and colleges management which is developed in ASP.NET,C# and SQL Server.
Now I am planning to support for the mobile applications (like basic models from Nokia/Samsung and for opera mobiles). I know the normal site we can access through some of the devices without any change, but needs to be optimized.
I am preparing another version which will be only few required fields and easy navigation for mobile. For that which method I need to use.
1. Normal ASPX files with optimized HTML code.
2. Or using WAP controls
3. Should I use HTML 5
Please help me to decide. | 2011/09/03 | [
"https://Stackoverflow.com/questions/7290630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/355226/"
] | 1. you can use normal aspx pages without any issue. only thing you need to optimize the file size.
2. you can develop better solution using HTML5 but only problem is, it is not supporting all the devices.[this is used html5](http://www.networkrail.co.uk/m/)
3. or just use any from [List of mobile frameworks](http://www.queness.com/post/6706/9-mobile-framework-to-kick-start-your-mobile-development-career) | Using .NET Mobile Framework is always a good option as well as Web Forms which will appear on all mobile devices regardless of carrier/phone model, plus lots of phones support ajax, and other client side scripting that'll work. HTML5 is a growing standard though, and when more phones start supporting it, you'll reap tons of the new benefits.
Model View Controller is always good to follow. Allows for scalability and for components to be abstracted. |
7,290,630 | I have an existing website for schools and colleges management which is developed in ASP.NET,C# and SQL Server.
Now I am planning to support for the mobile applications (like basic models from Nokia/Samsung and for opera mobiles). I know the normal site we can access through some of the devices without any change, but needs to be optimized.
I am preparing another version which will be only few required fields and easy navigation for mobile. For that which method I need to use.
1. Normal ASPX files with optimized HTML code.
2. Or using WAP controls
3. Should I use HTML 5
Please help me to decide. | 2011/09/03 | [
"https://Stackoverflow.com/questions/7290630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/355226/"
] | You can use normal ASP.NET Web Forms in conjunction with HTML5. Take a look at [HTML5Boilerplate](http://html5boilerplate.com/) which includes [Modernizr](http://www.modernizr.com/).
Use a combination of feature detection and [CSS Media Queries](http://www.w3.org/TR/css3-mediaqueries/) to serve up the appropriate files, layout and images for a particular mobile device.
Do not fall for "[Responsive Web Design](http://codersbarn.com/post/2011/08/26/Responsive-Web-Design-Stop-and-Think.aspx)" techniques that cost too much in terms of performance and esthetics (basically re-skinning desktop browser version of site and calling it "mobile-ready"); disclosure: this links to blog post from me. | Using .NET Mobile Framework is always a good option as well as Web Forms which will appear on all mobile devices regardless of carrier/phone model, plus lots of phones support ajax, and other client side scripting that'll work. HTML5 is a growing standard though, and when more phones start supporting it, you'll reap tons of the new benefits.
Model View Controller is always good to follow. Allows for scalability and for components to be abstracted. |
7,290,630 | I have an existing website for schools and colleges management which is developed in ASP.NET,C# and SQL Server.
Now I am planning to support for the mobile applications (like basic models from Nokia/Samsung and for opera mobiles). I know the normal site we can access through some of the devices without any change, but needs to be optimized.
I am preparing another version which will be only few required fields and easy navigation for mobile. For that which method I need to use.
1. Normal ASPX files with optimized HTML code.
2. Or using WAP controls
3. Should I use HTML 5
Please help me to decide. | 2011/09/03 | [
"https://Stackoverflow.com/questions/7290630",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/355226/"
] | Use ASP.NET Mobile Controls: [ASP.NET Mobile Controls](http://www.asp.net/mobile)
.. [(i.e. How to add mobile pages to your asp.net site)](http://www.asp.net/learn/whitepapers/add-mobile-pages-to-your-aspnet-web-forms-mvc-application)
* You will build a few UI controls, in a short amount of time, specifically for all mobile devices and it will be a much faster and much better user experience on mobile devices.
+ The UI renders minimal HTML and you control what gets rendered, meaning much less bandwidth required. Even though I have a 4G phone, so many times we are in a building that does not give a 4G signal and I much prefer sites that have mobile-specific output.
+ The UI is mobile-specific, users will not have to zoom around the page left/right up/down and zoom in to be able to click buttons or elements that were made for viewing in 1024x768 or higher.
Users with the latest 4G and dual core phones, and that happen to have 4G connection at the moment can always switch their phones into 'full HTML version' if they want more functionality than what you build using the ASP.NET mobile controls. However, if you go the other route and adopt JQuery-based or HTML5 code, you are excluding all previous generation phones from accessing your web site at all in many cases (besides it being slower and not as good a user experience as mobile-specific rendering). Even if you decide to focus only on the latest phones, you will also have to deal with html rendering issues, cross browser compatibility, besides the slow and UI complexity issues.
Good luck. | Using .NET Mobile Framework is always a good option as well as Web Forms which will appear on all mobile devices regardless of carrier/phone model, plus lots of phones support ajax, and other client side scripting that'll work. HTML5 is a growing standard though, and when more phones start supporting it, you'll reap tons of the new benefits.
Model View Controller is always good to follow. Allows for scalability and for components to be abstracted. |
2,855 | >
> [**Genesis 3:8-9**](http://www.biblegateway.com/passage/?search=Genesis%203:8-9&version=NLT) (NLT)
>
>
> 8 When the cool evening breezes were blowing, **the man and his wife heard the Lord God walking about** in the garden. So they hid from the Lord God among the trees. 9 Then the Lord God called to the man, “Where are you?”
>
>
>
[Emphasis mine.]
Is this generally understood to be a [theophany](http://en.wikipedia.org/wiki/Theophany)? The Wikipedia article mentions that Catholics believe that this is a theophany, but doesn't say anything about Protestant denominations.
Also, a very related question (that doesn't deserve its own question) is: does this mean that Jesus had a human body before He was born? | 2011/09/15 | [
"https://christianity.stackexchange.com/questions/2855",
"https://christianity.stackexchange.com",
"https://christianity.stackexchange.com/users/58/"
] | I'm not very familiar with the idea of theophany, but using [the definition given by Wikipedia](http://en.wikipedia.org/wiki/Theophany), this is obviously one.
>
> [Theophany] refers to the appearance of a deity to a human or other being, or to a divine disclosure.
>
>
>
---
**Warning:** The rest is speculation.
Looking at just this passage, Jesus didn't need to have a human body. God did appear in non-human form to Moses, too:
>
> [**Exodus 33:17-23 (ESV)**](http://www.biblegateway.com/passage/?search=exo%2033:17-23&version=ESV)
>
> 17 And the LORD said to Moses, "This very thing that you have spoken I will do, for you have found favor in my sight, and I know you by name." 18 Moses said, "Please show me your glory." 19 And he said, "I will make all my goodness pass before you and will proclaim before you my name 'The LORD.' And I will be gracious to whom I will be gracious, and will show mercy on whom I will show mercy. 20 But," he said, "you cannot see my face, for man shall not see me and live." 21 And the LORD said, "Behold, there is a place by me where you shall stand on the rock, 22 and while my glory passes by I will put you in a cleft of the rock, and I will cover you with my hand until I have passed by. 23 Then I will take away my hand, and you shall see my back, but my face shall not be seen."
>
>
>
Why would anyone die if they saw the Lord's face? This isn't a permanent condition:
>
> [**1 Corinthians 13:12 (ESV)**](http://www.biblegateway.com/passage/?search=1%20Corinthians+13:12&version=ESV)
>
> 12 For now we see in a mirror dimly, but then face to face. Now I know in part; then I shall know fully, even as I have been fully known.
>
>
> [**Revelation 22:3-4 (ESV)**](http://www.biblegateway.com/passage/?search=Revelation%2022:3-4&version=ESV)
>
> 3 No longer will there be anything accursed, but the throne of God and of the Lamb will be in it, and his servants will worship him. 4 They will see his face, and his name will be on their foreheads.
>
>
>
The reason a human being can't see God's face is their own sin. In the Paradise, Adam and Eve were originally not sinful, and so they could see God face to face. After eating the forbidden fruit, they had only yet chosen sin, but weren't yet full of sin. They did go into hiding of their own accord, but seeing God was not yet deathly at that point, and so God didn't need a human form to appear to them. | This is an example of a theophany. People often make the mistake of equating the descriptions of God with human form. Just because God is said to have a face, shoulders, a right hand etc. does not make him human. The same could be said of a koala bear [or enter arbitrary animal here!].
There are many, many references throughout the bible to God's "body", however it is unwise to assume we know what God looks like. We shall, ultimately, see His face and know Him fully as He is.
The incarnation is different. That is the phenomenal notion of God becoming a human being, fixed in time and space.
Hope that helps. |
57,139 | I was at a Middle Eastern restaurant and ordered a cup of their "Middle Eastern coffee" (perhaps something akin to Turkish coffee?), which seemed to have some sort of spice and sugar added to it. (The latter was significant only because I generally take hot coffee without sugar.) Now, after a few sips, I found that the coffee was becoming a bit gritty, presumably from some coffee grounds.
Given the general quality of the restaurant, I wouldn't be surprised if this was just bad quality. Thus: is this grittiness something to be expected from such a style of coffee, or was this probably just bad processing? | 2015/05/02 | [
"https://cooking.stackexchange.com/questions/57139",
"https://cooking.stackexchange.com",
"https://cooking.stackexchange.com/users/25295/"
] | Generally, no, it should not be overly gritty. The grind itself should be very fine, finer than an espresso grind. Secondly after the coffee is brewed, it's generally covered and left for a while so that the coffee grounds settle to the bottom of the pot. Then, when being poured, it should be poured carefully so the settled grounds aren't disturbed and end up in the cup.
If you don't let it settle, you'll have a lot of the coffee grinds floating in the cup and it'll have a powdery texture (although it should be overly gritty given the fineness of the grind). You'll generally still get a little of the coffee grinds in the cup but it shouldn't be a small amount and it should settle to the bottom.
Generally, the coffee is unsweetened (as many take it unsweetened) but it is commonly spiced with cardamon. The host will generally sweeten each cup to taste or will provide a small bowl of sugar allowing drinkers to sweeten the coffee to their own taste. | Utterly to be expected - the coffee is made with coffee grounds, sugar and water in a small tapered pot. There is no filter. If you want filtered coffee, order something else. There should be grounds on the bottom of the cup. Unless you like grounds, minimal stirring and swirling will help to keep them down there.
This is the coffee that is sometimes described as Strong as [x], Black as [y], Sweet as [z] where x, y, and z are place holders for one of love, hell and death, permuted as suits the mood. |
4,001,042 | We are currently developing an android app for our client. Client would like to include a barcode on a it’s mailing about the Android app, such that when the user scans the barcode, s/he will be taken directly to the application on the Android marketplace for download. To do this, client will need to know the exact URL on the marketplace, but we are not sure if a URL can be reserved in advance of actually putting the app on the market | 2010/10/22 | [
"https://Stackoverflow.com/questions/4001042",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/484694/"
] | The URL is composed of the application's namespace. The way to do it would be to put together any sort of app with the namespace (com.thecompany.theapp) and get it uploaded. You don't necessarily need to make it available to the public yet by publishing it, but getting it uploaded should claim the space, and you'll know what the URL will be when it is ready.
With that, as long as the combination of the company name and application name are reasonably unique, there's really no reason to worry that someone else would pop up with the same namespace and take it out from under you, so reserving is probably not necessary. | Another solution is to redirect the user to a URL of your own and manage the redirections from your own server. That way, if the url of your application changes it should be really easy to change it without bothering the users. |
31,277,037 | I have problem with GCM, sometimes have delay with android and ios app.
Is there any other solution which doesn't have that delay?
What about parse push? | 2015/07/07 | [
"https://Stackoverflow.com/questions/31277037",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1204527/"
] | Given that parse push is just an layer on top of GCM, I don't see how they would be any better. | Here is the list you can use:
* [Parse.com](https://parseplatform.org/)
* [Grokking Android](https://www.grokkingandroid.com/xmpp-server-google-cloud-messaging/)
* [PushOver](https://pushover.net/)
* [Mixpanel](https://developer.mixpanel.com/docs/android-push-notifications)
* [App42 Client](http://api.shephertz.com/tutorial/Push-Notification-Android/) |
45,101 | Let's say I invest in a startup, either with money, work, etc. In return I am given a 5% stake in the company, but no salary, benefits, etc.
**When do I see money related to that 5%? Is it only when they get bought, or is there some sort of quarterly payout of profits?** | 2015/03/02 | [
"https://money.stackexchange.com/questions/45101",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/15097/"
] | Equity could mean stock options. If that's the case if the company makes it big, you'll have the option to buy stocks cheap (which can then be sold at a huge profit)
How are you going to buy those without income?
5% equity is laughable. I'd be looking for 30-40% if not better without salary. Or even better, a salary.
To elaborate, 5% is fine, and even normal for an early employee taking a mild pay cut in exchange for a chance at return. That chance of any return on the equity is only about 1/20 (94% of startups fail)
There is no reason for an employee to work for no pay. An argument could be made for a cofounder, with direct control and influence in the company to work for equity only, but it would be a /lot/ more (that 30-40%), or an advisory role (5% is reasonable)
I also just noticed you mentioned "investing" in the startup with cash. As an angel investor, I'd still expect far more than 5%, and preferred shares at that. More like 16-20%.
[Read this](http://fundersandfounders.com/how-funding-works-splitting-equity/) for more info on how equity is usually split. | In the real world, there are only two times you'll see that 5% become worth anything - ie, something you can exchange for cash - 1) if another company buys them; (2) if they go public. If neither of these things happen, you cannot do anything with the stock or stock options that you own. |
45,101 | Let's say I invest in a startup, either with money, work, etc. In return I am given a 5% stake in the company, but no salary, benefits, etc.
**When do I see money related to that 5%? Is it only when they get bought, or is there some sort of quarterly payout of profits?** | 2015/03/02 | [
"https://money.stackexchange.com/questions/45101",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/15097/"
] | You will probably never see it. The startup at some point may start issuing dividends to the shareholders (which would be the owners, including you if you are in fact getting equity), but that day may never come. If they hire others with this method, you'll likely lose even that 5% as more shares are created. Think of inflation that happens when government just prints more money. All notes effectively lose value.
I wouldn't invest either, [most startups fail](http://www.wsj.com/articles/SB10000872396390443720204578004980476429190).
Don't work for free on the vague promise of some future compensation; you want a salary and benefits. Equity doesn't put food on your table. | Read the book, "Slicing Pie: Fund Your Company Without Funds". You can be given 5% over four years and in four years, they hire someone and give him twice as much as you, for working a month and not sacrificing his salary at all.
Over the four years, the idiot who offered you the deal will waste investors money on obvious, stupid things because he doesn't know anything about how to build what he's asking you to build, causing the need for more investment and the dilution of your equity. I'm speaking from personal experience.
Don't even do this. Start your own company if you're working for free, and tell the idiot who offered you 5% you'll offer him 2% for four years of him working for you for free. |
45,101 | Let's say I invest in a startup, either with money, work, etc. In return I am given a 5% stake in the company, but no salary, benefits, etc.
**When do I see money related to that 5%? Is it only when they get bought, or is there some sort of quarterly payout of profits?** | 2015/03/02 | [
"https://money.stackexchange.com/questions/45101",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/15097/"
] | The details of how you can convert your 5% equity share to cash or stocks will be detailed in writing in the legal agreement you have already signed.
If you do not have any signed written agreement, *there is no 5%*. Since 0% of anything is zero, you can expect to get $0 some time within the next few years.
Lastly, if the person running the business, tells you that there is 5% equity for you, even though it is not in writing, **that is extremely unlikely to be the case.** This is because the Seller of the equity has no obligation whatsoever to pay you. In fact, they are obligated by their other agreements with actual shareholders not to dilute their equity without good cause.
So, odds are, if your agreement is not in writing, not only will it **not** be honored, but it probably **can't** be honored. | In the real world, there are only two times you'll see that 5% become worth anything - ie, something you can exchange for cash - 1) if another company buys them; (2) if they go public. If neither of these things happen, you cannot do anything with the stock or stock options that you own. |
45,101 | Let's say I invest in a startup, either with money, work, etc. In return I am given a 5% stake in the company, but no salary, benefits, etc.
**When do I see money related to that 5%? Is it only when they get bought, or is there some sort of quarterly payout of profits?** | 2015/03/02 | [
"https://money.stackexchange.com/questions/45101",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/15097/"
] | The details of how you can convert your 5% equity share to cash or stocks will be detailed in writing in the legal agreement you have already signed.
If you do not have any signed written agreement, *there is no 5%*. Since 0% of anything is zero, you can expect to get $0 some time within the next few years.
Lastly, if the person running the business, tells you that there is 5% equity for you, even though it is not in writing, **that is extremely unlikely to be the case.** This is because the Seller of the equity has no obligation whatsoever to pay you. In fact, they are obligated by their other agreements with actual shareholders not to dilute their equity without good cause.
So, odds are, if your agreement is not in writing, not only will it **not** be honored, but it probably **can't** be honored. | Equity could mean stock options. If that's the case if the company makes it big, you'll have the option to buy stocks cheap (which can then be sold at a huge profit)
How are you going to buy those without income?
5% equity is laughable. I'd be looking for 30-40% if not better without salary. Or even better, a salary.
To elaborate, 5% is fine, and even normal for an early employee taking a mild pay cut in exchange for a chance at return. That chance of any return on the equity is only about 1/20 (94% of startups fail)
There is no reason for an employee to work for no pay. An argument could be made for a cofounder, with direct control and influence in the company to work for equity only, but it would be a /lot/ more (that 30-40%), or an advisory role (5% is reasonable)
I also just noticed you mentioned "investing" in the startup with cash. As an angel investor, I'd still expect far more than 5%, and preferred shares at that. More like 16-20%.
[Read this](http://fundersandfounders.com/how-funding-works-splitting-equity/) for more info on how equity is usually split. |
45,101 | Let's say I invest in a startup, either with money, work, etc. In return I am given a 5% stake in the company, but no salary, benefits, etc.
**When do I see money related to that 5%? Is it only when they get bought, or is there some sort of quarterly payout of profits?** | 2015/03/02 | [
"https://money.stackexchange.com/questions/45101",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/15097/"
] | You will probably never see it. The startup at some point may start issuing dividends to the shareholders (which would be the owners, including you if you are in fact getting equity), but that day may never come. If they hire others with this method, you'll likely lose even that 5% as more shares are created. Think of inflation that happens when government just prints more money. All notes effectively lose value.
I wouldn't invest either, [most startups fail](http://www.wsj.com/articles/SB10000872396390443720204578004980476429190).
Don't work for free on the vague promise of some future compensation; you want a salary and benefits. Equity doesn't put food on your table. | In the real world, there are only two times you'll see that 5% become worth anything - ie, something you can exchange for cash - 1) if another company buys them; (2) if they go public. If neither of these things happen, you cannot do anything with the stock or stock options that you own. |
45,101 | Let's say I invest in a startup, either with money, work, etc. In return I am given a 5% stake in the company, but no salary, benefits, etc.
**When do I see money related to that 5%? Is it only when they get bought, or is there some sort of quarterly payout of profits?** | 2015/03/02 | [
"https://money.stackexchange.com/questions/45101",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/15097/"
] | Read the book, "Slicing Pie: Fund Your Company Without Funds". You can be given 5% over four years and in four years, they hire someone and give him twice as much as you, for working a month and not sacrificing his salary at all.
Over the four years, the idiot who offered you the deal will waste investors money on obvious, stupid things because he doesn't know anything about how to build what he's asking you to build, causing the need for more investment and the dilution of your equity. I'm speaking from personal experience.
Don't even do this. Start your own company if you're working for free, and tell the idiot who offered you 5% you'll offer him 2% for four years of him working for you for free. | In the real world, there are only two times you'll see that 5% become worth anything - ie, something you can exchange for cash - 1) if another company buys them; (2) if they go public. If neither of these things happen, you cannot do anything with the stock or stock options that you own. |
45,101 | Let's say I invest in a startup, either with money, work, etc. In return I am given a 5% stake in the company, but no salary, benefits, etc.
**When do I see money related to that 5%? Is it only when they get bought, or is there some sort of quarterly payout of profits?** | 2015/03/02 | [
"https://money.stackexchange.com/questions/45101",
"https://money.stackexchange.com",
"https://money.stackexchange.com/users/15097/"
] | The details of how you can convert your 5% equity share to cash or stocks will be detailed in writing in the legal agreement you have already signed.
If you do not have any signed written agreement, *there is no 5%*. Since 0% of anything is zero, you can expect to get $0 some time within the next few years.
Lastly, if the person running the business, tells you that there is 5% equity for you, even though it is not in writing, **that is extremely unlikely to be the case.** This is because the Seller of the equity has no obligation whatsoever to pay you. In fact, they are obligated by their other agreements with actual shareholders not to dilute their equity without good cause.
So, odds are, if your agreement is not in writing, not only will it **not** be honored, but it probably **can't** be honored. | Read the book, "Slicing Pie: Fund Your Company Without Funds". You can be given 5% over four years and in four years, they hire someone and give him twice as much as you, for working a month and not sacrificing his salary at all.
Over the four years, the idiot who offered you the deal will waste investors money on obvious, stupid things because he doesn't know anything about how to build what he's asking you to build, causing the need for more investment and the dilution of your equity. I'm speaking from personal experience.
Don't even do this. Start your own company if you're working for free, and tell the idiot who offered you 5% you'll offer him 2% for four years of him working for you for free. |
9,454 | I refer to these types of brackets as *servo brackets*, or *robot brackets*:
[](https://i.stack.imgur.com/mbjUy.jpg)
I know that the two specific brackets, shown above, are known as a short-U (some vendors refer to them as "C", en lieu of "U") and a multi-function bracket, respectively, and that there are other types available, namely:
* Long U bracket
* Oblique U bracket
* i bracket
* L bracket
* etc.
However, I am sure that there is a correct name for these *types* of bracket (or this range of bracket, if you will), rather than just *servo brackets* - either a generic name or a brand name. I have seen the term once before, on a random web page, but the name escapes me. They are either named after their creator, or, if I recall correctly, the institution where they were developed.
Does anyone have a definitive answer, preferably with a citation or web reference, or a little historical background? | 2016/03/20 | [
"https://robotics.stackexchange.com/questions/9454",
"https://robotics.stackexchange.com",
"https://robotics.stackexchange.com/users/9176/"
] | You might want to consider building, and designing (or following a standard design for) a robot arm, using "servo backets"1, which are designed to be used with standard servos (i.e., the MG995 or MG996R). Here is a common example of one such robot arm:
[](https://i.stack.imgur.com/m6SpZ.jpg)
These brackets are cheap and widely available, as a quick search for [servo brackets](https://www.google.com/search?q=servo%20brackets), or [robot brackets](https://www.google.com/search?q=robot%20brackets) will show you.
There are many types/forms/shapes available, and they are all compatible with each other:
* Short U bracket;
* Long U bracket;
* Oblique U bracket;
* I bracket;
* L bracket
* Multi Function bracket;
* Body Plates;
* Elongated, or Large, U bracket;
* and others.
Note that these names are not standard, merely descriptive, and may vary from supplier to supplier. Here is a Short U and a Multi Function bracket
[](https://i.stack.imgur.com/zCIQE.jpg)
These brackets are reusable, so, once you have completed your robot arm, should you become tired of it, you could dismantle it, purchase some additional brackets and make a humanoid (upright) robot,
[](https://i.stack.imgur.com/qWlih.jpg)
or a hexapod,
[](https://i.stack.imgur.com/dlrIK.jpg)
or whatever.
As the first photo (of the robot arm showed), a simple robot grabber/gripper is also available for the end of the arm:
[](https://i.stack.imgur.com/wuAzg.jpg)
These grippers, and the brackets themselves, are widely available on eBay. Note that it is invariably cheaper to buy the brackets independently, than the whole arm kits that you see, by about 50% usually. Although having said that, the 21 DOF humanoid robot kits are actually the cheapest option, if you can get one for £45, and you think that you will need all of the extra brackets at some point in the future. You will also require bearings (and cups), so make sure that any kit that you buy has those included.
The parts that you will require for the robot arm are as follows:
* Multifunctional bracket x 5
* Long U shape bracket x 3
* L shape bracket x 1 (to attach the claw)
* Acrylic board x 1
* Cup bearing x 4
* Screw nut x September 1
* Alloy mechanical claw x 1
* U beam bracket x 2 (for the base)
* MG996R x 6
* Servo Extension cord x 3
* Servo horns x 6
Here is a better view:
[](https://i.stack.imgur.com/O3GbR.jpg)
---
1 There is a correct name for them, other than *servo brackets*, but the real name escapes me. | The general name for the arm in your picture is an *Articulated Arm* or [Articulated Robot](https://en.wikipedia.org/wiki/Articulated_robot) but there are many variations on the theme.
I have mostly worked with [SCARA arms](https://en.wikipedia.org/wiki/SCARA) as fewer motors need to hold the weight of the load:
[](https://i.stack.imgur.com/0gOBM.jpg)
See [my answer](https://robotics.stackexchange.com/a/286/37) to [Which type of actuator will be suitable for a very strong robot arm](https://robotics.stackexchange.com/q/284/37) |
349,503 | I have a circuit with a button and a motor. How would I make the motor gradually ramp up speed over 1-3 seconds when the button is pressed and gradually slow down over 0.5-1 seconds when the button is released, instead of the motor going full speed immediately? The circuit may be either 12V or -12V depending on the desired turning direction.
This is a simplified version of an old electric desk control circuit. The desk moves too suddenly when the button is pressed and I need to slow it down.
As a programmer, my go-to solution for stuff like this is often a microcontroller, but I'd like to try using analog components if possible.
Even though I've had education in electronics back in the day, I don't know if there is a name for what I'm trying to do and how to search for more information about it. I'm stuck googling with too broad keywords. If the analog solution isn't too much more complex than a microcontroller one, please point me to the right direction. | 2018/01/11 | [
"https://electronics.stackexchange.com/questions/349503",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/77207/"
] | Generically you may be able to do this by controlling a DC motor with PWM using and ramping the duty cycle from 0% to 100% over some time, and that will probably solve your problem.
The details are heavily dependent on the type and size (current/voltage) of motor- it may not be practical if the motor is of certain AC types for example.
I have retrofitted something that this and it worked well in the application (it happened to be gently lifting many millions of dollars worth of equipment rather than a desk top).
I used a cheap little microcontroller (PIC18F14K22) with a few lines of assembly code (less than 200 including comments and blank lines) to generate the timed 7.8kHz PWM signal to drive several large MOSFETs. A hardware overcurrent cutoff was included (probably why I picked that particular chip). I was able to leave all the original safety and other interlocks in place, just interrupting what was already present. | Your desk circuit could indeed implement a slow attack and slow decay function for the key switch.
Adding one wouldn't be difficult in theory but may well be in practice as there's a warranty to invalidate, not to mention the violation of the current safety mechanisms that the manufacturer has guaranteed but won't afterwards.
But, answering your question, an electrical circuit to give the effect you want would be simple and straightforward. |
73,689 | I've got a little private webserver where I have several virtualhosts. I know that it's impossible to assign a certificate to each individual virtualhost, because the server finds out which virtualhost was requested only AFTER the SSL connection has been established. But is it possible to have a single SSL certificate which lists several domains? Or at least a wildcard domain, like \*.example.com. If yes, what Linux commands do I have to write to make such a self-signed certificate?
**Added:** To clarify - I have just one IP address for all the virtual hosts. | 2009/10/12 | [
"https://serverfault.com/questions/73689",
"https://serverfault.com",
"https://serverfault.com/users/9486/"
] | To expand on AlberT's answer:
<http://blog.loftninjas.org/2008/11/11/configuring-ssl-requests-with-subjectaltname-with-openssl/>
You don't have to use wildcard domains. You can just list all hostnames you need as subject alt names and it should work on all major browsers. | First of all - you can assign a certificate for each individual virtual host - the key is to make different private (and external/public, if you want to make it world accessible) ip address for each virtualhost.
But then yes - alternatively, you can assign a wildcard certificate if your virtual hosts is simply \*.example.com.
For the command - there are many results from google - i'll just put an example from [here](http://www.justinsamuel.com/2006/03/11/howto-create-a-self-signed-wildcard-ssl-certificate/):
<http://www.justinsamuel.com/2006/03/11/howto-create-a-self-signed-wildcard-ssl-certificate/>
And make sure you enter \*.example.com for the Common Name. |
6,504,396 | I am working with android API v2.2.
I want in my application i can work with QR reader. means in a button click it open the camera and can able to read QR code.
Is it possible generate QR code through application?
How can i work with these? I dont have any idea.
Plz tell me what should used for this(is there any lib or api available for this) If yes then what should be the process.
Give me a sample example.
Thank you | 2011/06/28 | [
"https://Stackoverflow.com/questions/6504396",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/1147007/"
] | Try the zxing library : <http://code.google.com/p/zxing/> | you can use either
zxing library : <http://code.google.com/p/zxing/>
or
ZBar bar code reader here <http://sourceforge.net/projects/zbar/?source=dlp> |
84,081 | I had a situation of being asked to bring the lastest mail that I got. But then I wanted to ask how old it can be to be accepted. So I tried to think how I can ask my wonder. Here is the my thought.
>
> It should be the mail that you got at least before 3 months from the day you ask for one.
>
>
>
At least before how many months should the mail that I got be? | 2016/03/10 | [
"https://ell.stackexchange.com/questions/84081",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/24903/"
] | You can just ask directly which mail the person wants.
>
> Which mail do you want?
>
>
>
and ask until you know which one to bring. | >
> Should I submit the mail for the last three months?
>
>
>
*The last three months* means *nearest to the present time*. |
84,081 | I had a situation of being asked to bring the lastest mail that I got. But then I wanted to ask how old it can be to be accepted. So I tried to think how I can ask my wonder. Here is the my thought.
>
> It should be the mail that you got at least before 3 months from the day you ask for one.
>
>
>
At least before how many months should the mail that I got be? | 2016/03/10 | [
"https://ell.stackexchange.com/questions/84081",
"https://ell.stackexchange.com",
"https://ell.stackexchange.com/users/24903/"
] | You can just ask directly which mail the person wants.
>
> Which mail do you want?
>
>
>
and ask until you know which one to bring. | Are you living in the United States? Are you required to prove that you live at a particular address? Perhaps you are registering your children for school. If so, some possible forms of the question could be:
>
> How recent does the piece of mail have to be?
> How old can the piece of mail be?
>
>
>
Some possible answers:
>
> It must be something which you received within the last three months.
> It must be from within the last month.
> It must be no more than two months old.
>
>
> |
14,026,768 | I'm looking for a very simple implementation of RSA in C. I need to place it in a DSP, so I'd like to use something very thin and straightforward.
Nonetheless, I just found only examples with little numbers (int or long) while I need to implement RSA at least at 1024 bits, so I also have to cope with large numbers.
Can you point me to some libraries or examples for this? | 2012/12/25 | [
"https://Stackoverflow.com/questions/14026768",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/919700/"
] | The [LibTomCrypt](http://www.libtom.net/?page=features&newsitems=5&whatfile=crypt) and related projects are very clean and understandable. | The [latest openssl release's source](http://openssl.org/source/openssl-1.0.1c.tar.gz) contains an implementation of RSA, which should work fine for your purposes. Alternatively, you may also consider the [GNUPg](http://gnupg.org) project, another open-source project with an RSA component. |
295,906 | I am looking for a switch that (mechanically, not by circuit design) is first a momentary switch and then latches down when depressed far enough to be a maintained switch.
Do all latching switches have a "momentary moment" before latching, or do I need to look for a specific sub-type of latching switch? I'd rather not buy a switch only to find out it doesn't have the momentary function.
Edit: Sorry I'm not sure if my description was clear. What I am looking for is a switch that when you depress it to say 5mm connects the circuit (turns on an LED etc.). If you release it at this point it just springs back and turns off the LED, i.e., a momentary switch. However, if you depress it to 10mm it locks mechanically and keeps the LED on permanently. Then when you depress it to 15mm this unlocks it and it springs back up and disconnects the circuit and you are back where you started. I'm sure I've used these in real life before, I just wasn't sure if it was standard behavior. | 2017/03/31 | [
"https://electronics.stackexchange.com/questions/295906",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/118316/"
] | Most of the major manufacturers of industrial controls make what are referred to as "Alternate Action" or "Push-On / Push-Off" or simply "Push-Push" buttons. When you select those operators, you can then also get a contact block for it that is N.O.E.M. (Normally Open Early Make). With that combination, the contacts will close BEFORE the button latches, then if you continue pressing hard enough, it will latch and stay closed, until you press the same button again to release it.
[Allen Bradley Alternate Action Push Button operator](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=32E5C39564D54D04A3329DD39A7D40C9)
[Allen Bradley NOEM contact block](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=5E8DDDC817854472903FD5A388AE6863) | nope, that's not a common feature of latching switches. In fact, I'd even consider it kind of an anti-feature. Normally, you'd want a switch to be in either stationary state, and nowhere in between!
So, yes, you'll have to look for that in the switch datasheets.
You could probably also find (possibly even easier) a switch that is "dual-momentary", with the first contact closing at a different depression than the second (think of digital camera shutter buttons, which you slightly depress to set the focus point, and fully to take a picture).
With a relay (or a transistor), you could
* use the "upper" contact as momentary closing switch
* use the "lower" contact to power coil of a relay that powers itself and closes the circuit permanently.
[simulate this circuit](/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fIuagW.png) – Schematic created using [CircuitLab](https://www.circuitlab.com/) |
295,906 | I am looking for a switch that (mechanically, not by circuit design) is first a momentary switch and then latches down when depressed far enough to be a maintained switch.
Do all latching switches have a "momentary moment" before latching, or do I need to look for a specific sub-type of latching switch? I'd rather not buy a switch only to find out it doesn't have the momentary function.
Edit: Sorry I'm not sure if my description was clear. What I am looking for is a switch that when you depress it to say 5mm connects the circuit (turns on an LED etc.). If you release it at this point it just springs back and turns off the LED, i.e., a momentary switch. However, if you depress it to 10mm it locks mechanically and keeps the LED on permanently. Then when you depress it to 15mm this unlocks it and it springs back up and disconnects the circuit and you are back where you started. I'm sure I've used these in real life before, I just wasn't sure if it was standard behavior. | 2017/03/31 | [
"https://electronics.stackexchange.com/questions/295906",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/118316/"
] | Most of the major manufacturers of industrial controls make what are referred to as "Alternate Action" or "Push-On / Push-Off" or simply "Push-Push" buttons. When you select those operators, you can then also get a contact block for it that is N.O.E.M. (Normally Open Early Make). With that combination, the contacts will close BEFORE the button latches, then if you continue pressing hard enough, it will latch and stay closed, until you press the same button again to release it.
[Allen Bradley Alternate Action Push Button operator](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=32E5C39564D54D04A3329DD39A7D40C9)
[Allen Bradley NOEM contact block](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=5E8DDDC817854472903FD5A388AE6863) | Although I have seen push-button switches that behave as you describe, I'm not certain that this behaviour is specified in the datasheets. Rather - it's a design feature that ensures that the latch position ON (down) is always connected even when manufacturing tolerances rear their ugly head.
However, this type of operation is standard in closed-circuit intercom belt packs used by professionals.
Operation is simple: a quick tap-and-release of the button flips the state of the latch that drives the circuit. If the circuit was OFF, the quick tap toggles it ON. If the circuit was ON, the quick tap toggles it OFF.
A sustained press of the button (more than about 1 second) disables / resets the latch and the circuit functions as Momentary ONLY. If the circuit was latched ON, pressing and holding the button resets the latch. Note that the circuit is always ON anytime the button is pressed.
Older gear used a CD4013 dual D-FF and a single transistor per button. Modern gear uses a tiny microcontroller to do the same thing. |
295,906 | I am looking for a switch that (mechanically, not by circuit design) is first a momentary switch and then latches down when depressed far enough to be a maintained switch.
Do all latching switches have a "momentary moment" before latching, or do I need to look for a specific sub-type of latching switch? I'd rather not buy a switch only to find out it doesn't have the momentary function.
Edit: Sorry I'm not sure if my description was clear. What I am looking for is a switch that when you depress it to say 5mm connects the circuit (turns on an LED etc.). If you release it at this point it just springs back and turns off the LED, i.e., a momentary switch. However, if you depress it to 10mm it locks mechanically and keeps the LED on permanently. Then when you depress it to 15mm this unlocks it and it springs back up and disconnects the circuit and you are back where you started. I'm sure I've used these in real life before, I just wasn't sure if it was standard behavior. | 2017/03/31 | [
"https://electronics.stackexchange.com/questions/295906",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/118316/"
] | Most of the major manufacturers of industrial controls make what are referred to as "Alternate Action" or "Push-On / Push-Off" or simply "Push-Push" buttons. When you select those operators, you can then also get a contact block for it that is N.O.E.M. (Normally Open Early Make). With that combination, the contacts will close BEFORE the button latches, then if you continue pressing hard enough, it will latch and stay closed, until you press the same button again to release it.
[Allen Bradley Alternate Action Push Button operator](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=32E5C39564D54D04A3329DD39A7D40C9)
[Allen Bradley NOEM contact block](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=5E8DDDC817854472903FD5A388AE6863) | This is a side effect of the mechanical path the latch spring takes in the switch. On some, it's easy enough to modify, removing the part that holds the button in. IIRC most often it's the opposite of what you described, as it normally takes a deeper press depth to latch, then a shorter press to unlatch. The catch is pushed around by the physical shape of the path, and a spring provides the tension needed.
***Its basically the same mechanism used in clicky pens!***
The v looking grove is what provides the latch function. Click in, it falls into the grove, click out, it gets pushed out and then pushed back into the ready position, like a pinball. |
295,906 | I am looking for a switch that (mechanically, not by circuit design) is first a momentary switch and then latches down when depressed far enough to be a maintained switch.
Do all latching switches have a "momentary moment" before latching, or do I need to look for a specific sub-type of latching switch? I'd rather not buy a switch only to find out it doesn't have the momentary function.
Edit: Sorry I'm not sure if my description was clear. What I am looking for is a switch that when you depress it to say 5mm connects the circuit (turns on an LED etc.). If you release it at this point it just springs back and turns off the LED, i.e., a momentary switch. However, if you depress it to 10mm it locks mechanically and keeps the LED on permanently. Then when you depress it to 15mm this unlocks it and it springs back up and disconnects the circuit and you are back where you started. I'm sure I've used these in real life before, I just wasn't sure if it was standard behavior. | 2017/03/31 | [
"https://electronics.stackexchange.com/questions/295906",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/118316/"
] | Most of the major manufacturers of industrial controls make what are referred to as "Alternate Action" or "Push-On / Push-Off" or simply "Push-Push" buttons. When you select those operators, you can then also get a contact block for it that is N.O.E.M. (Normally Open Early Make). With that combination, the contacts will close BEFORE the button latches, then if you continue pressing hard enough, it will latch and stay closed, until you press the same button again to release it.
[Allen Bradley Alternate Action Push Button operator](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=32E5C39564D54D04A3329DD39A7D40C9)
[Allen Bradley NOEM contact block](http://raise.rockwellautomation.com/RAConfig/resultsComponents.asp?CID=5E8DDDC817854472903FD5A388AE6863) | I can't find anything already in production like you described, but you may be able to create this yourself fairly painlessly. What you want is a "dual stage" push button, but pretty much every implementation I've seen of a dual stage button has been done by combining two existing button types.
Examples being the Steam Gaming controllers triggers, which are just a plastic trigger than moves a pot, and at full pull presses a momentary pushbutton, and [this DIY example using two offset microswitches](https://martybugs.net/photography/remote.cgi)
So my best suggestion would be to mount a limit/microswitch for your momentary press since they allow for a travel distance past the contact point, and a latching pushbutton next to it, then 3d-print a button cap/housing to make it look like a single button.
If done right you could make a custom pcb they mount on and add pins/connector to create a single button module out of the whole piece that could then be modeled as a single object for design and produced in larger quantities. |
48,993 | I just want to start off by saying I'm not good in stats at all, hence I'm using sigma plot/stat.
So I need to compare groups (with different sample sizes), and since they're not normally distributed, I'm using ANOVA on ranks. And I just realized that the results of the analysis is different depending on what groups I include in the test.
E.g.
If I test gp A, B, C, and D.
Dunn's post hoc pair-wise comparison says A is only different from B.
If I don't include gp D. Dunn's says A is different from B and C.
I also find that if I do ANOVA on ranks for many groups, Dunn's does not show sig. dif. between some pairs, but if I do Mann Whitney Rank Sum test on the pair, there is sig. dif.
So how can I keep things consistent/comparable? Can I just be stupid and do Mann Whitney on everything? (Like I said, I'm really bad at stats).
I'd appreciate any help or comments. Thanks so much! | 2013/01/31 | [
"https://stats.stackexchange.com/questions/48993",
"https://stats.stackexchange.com",
"https://stats.stackexchange.com/users/20324/"
] | You did not specify the experimental design, so I assume that all comparisons are equally important. Then use the Kruskal-Wallis rank ANOVA before doing any pairwise comparisons. If this is significant you have more license in doing pairwise comparisons. That brings up a common problem: Wilcoxon tests can be at odd with the unified Kruskal-Wallis analysis. For that and to be able to handle covariates I am moving more and more to the generalization of the two tests: the proportional odds ordinal logistic regression model. With it you can do pairwise tests that are fully embedded in the overall model containing multiple groups. | When you compare A, B, and C you have 3 pairs to look at. When you include D you have 6 possibe pairs. If you added a few more groups then you would have even more pairs to compare. When you have a large number of comparisons there is a higher chance of seeing something that looks like a difference but is just due to chance. So multiple comparison procedures correct for this increased liklihood of seeing something due to chance by making the criteria for calling something significant stronger.
So the difference between A and C in your comparison is big enough to be considered significant (not likely due to chance) when there are 3 comparisons, but could be considered due to chance when there are 6 comparisons. Since D was of interest you should keep the information on the possible comparisons with D and go with the stricter adjustment.
Consider if you saw a picture of a target with a bullet hole near the center and a note on the picture said that the shooter was 100 yards (or meters) away when the shot was taken. This seems impresive, but now we zoom out and see that the target is on the side of a barn that is littered with hundreds of bullet holes and we see the shooter (who is 100 yards/meters away) holding a fully automatic machine gun and there are thousands of shells around them implying that fewer than half of the shots even hit the barn. The fact that 1 of the bullets hit the target is much less impressive (significant) now, but if we had zoomed out to find the shooter had a single shot rifle and had hit the target with a single shot, that would stay impressive (significant).
Reporting results from the A, B, and C comparison when D had been looked at would be like showing a picture with 3 bullet holes, 2 of which hit the target, but cropping out the other 3 holes from other shots taken (comparisons with D). |
3,496,936 | I was looking into the configuration options of the Elgg, the open source social networking site. There was an option which allowed splitting the database connectivity into read and write and even multiple connections for reads and writes.
I am not sure as why the splitting of read and write is needed.
If I am not clear , please do look into lines 53 and 54 <http://reference.elgg.org/settings_8example_8php-source.html> | 2010/08/16 | [
"https://Stackoverflow.com/questions/3496936",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/357930/"
] | I found the answer for this [here](http://www.newlocalmedia.com/blog/66-notes-on-elgg-12.html). Hope it would be of help for someone in future. | At my previous job we were running 2 MySQL servers for our system. One being the read, and the other being the write. These server's were mirrored. Reason for this is that when you are doing SELECT, INSERT etc it puts a lock on the table which will prevent access from other requests. In this configuration it will allow you to do larger SELECT statements while still being able to do INSERT's.
Possibly this is the same reason for this system? |
17,122,839 | I am using Paypal plugin in my virtuemart 2.0.8 for Joomla 2.5. When any user is making payment via credit card, after completion of their payment they are getting option to create their Paypal account or a link is given to redirect to mysite.com and the user gets stuck there.
How will the credit card user get redirected automatically to my site once the payment is made? Please advice. | 2013/06/15 | [
"https://Stackoverflow.com/questions/17122839",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/2488651/"
] | Half the reason 1024+ key sizes are considered acceptable is because they *don't* need to be regenerated.
In SSH you have the server host key and that's just generated once - when the SSH server is installed. Then you have (optionally) keys that the client uses to login with and they're not regenerated every time either - just once and that's it. | Its common do create public/private key pair for each party once and use them to verify peers as well as using them to transmit secrets.
Using only rsa is uncommon so usually one create a symmetric chipher (e.g. AES) and use rsa to verify and transmit a random key before you do the rest in that chipher. Reason for that is that the length in bits of your message cannot be longer than the length of the key when using rsa and it's quite slow.
SSL, SSH, GPG and PGP all do it like that.
What's wrong with SSL? |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | The [kingdom of loathing wiki](http://kol.coldfront.net/thekolwiki/index.php/Martini) has a potency value for most, if not all, drinks, and it is visible in the item description.
[For a normal character](http://kol.coldfront.net/thekolwiki/index.php/Drunkenness) the maximum drunkenness without being fall-down-drunk is 14. So 15 and above is to much.
Getting a Liver of Steel increases your maximum safe inebriety to 19. | You can get up to 14 drunkenness safely by default, and 19 if you get the liver of steel from the Deep Fat Friers side quest.
As a rule of thumb, beers and wines give you 1 or 2 drunkenness, spirits and basic mixed drinks give three, fancy mixed drinks(umbrella, coconut, etc) give 4. |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | The amount of Drunkeness you can have before becoming completely useless depends on your skills and what kind of run you are doing. For the purposes of normal ascensions, your alcohol tolerance runs at about a baseline 15. At and over that, you're face-down in the gutters. You can increase your tolerance by consuming a steel margarita, received from the Azazel in Hell quest.
Avatars of Boris and Zombie Slayers are lightweights, only having a tolerance of 5, while Avatars of Jarlsberg can handle slightly better at 10. Avatars of Sneaky Pete, on the hand, pretty much have two functional livers and have a base tolerance of 20.
Note that these numbers are the levels of Drunkenness *at which* you become falling-down drunk. The amount of alcohol you can drink and still actually adventure is the aforementioned appropriate number minus 1. So to more clearly illustrate my point:
* Normal ascension - 14 Drunkenness
* Avatar of Boris/Zombie Slayer - 4 Drunkenness
* Avatar of Jarlsberg - 9 Drunkenness
* Avatar of Sneaky Pete - 19 Drunkenness
* Actually Ed - 0 Drunkenness
* consuming steel margarita - +5 Drunkenness tolerance
* Nightcap (Avatar of Jarlsberg skill) - +5 Drunkenness tolerance
* Hard Drinker (Avatar of Sneaky Pete skill) - +10 Drunkenness tolerance
* Hollow Leg (Skill gained from Sloppy Jalopy) - +1 Drunkenness tolerance
* Replacement Liver (Actually Ed skill) - +5 Drunkenness tolerance | The [kingdom of loathing wiki](http://kol.coldfront.net/thekolwiki/index.php/Martini) has a potency value for most, if not all, drinks, and it is visible in the item description.
[For a normal character](http://kol.coldfront.net/thekolwiki/index.php/Drunkenness) the maximum drunkenness without being fall-down-drunk is 14. So 15 and above is to much.
Getting a Liver of Steel increases your maximum safe inebriety to 19. |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | The [kingdom of loathing wiki](http://kol.coldfront.net/thekolwiki/index.php/Martini) has a potency value for most, if not all, drinks, and it is visible in the item description.
[For a normal character](http://kol.coldfront.net/thekolwiki/index.php/Drunkenness) the maximum drunkenness without being fall-down-drunk is 14. So 15 and above is to much.
Getting a Liver of Steel increases your maximum safe inebriety to 19. | Normally you get the *falling-down-drunk* state when you have 15 or more drunkenness, but you can upgrade it to 20 by consuming a [Steel Margarita](http://kol.coldfront.net/thekolwiki/index.php/Steel_margarita) which is a reward for an optional quest.
You can see the amount of drunkenness you gain from a drink by looking at the "potency" in the item description. A general rule of thumb is:
* Beer: 1
* Shot of Schnapps: 1
* Pure Booze: 3
* 2-ingredient Cocktail: 3
* 3-ingredient Cocktail: 4
When you want to know the details about a specific drink, you can look up on [the wiki](http://kol.coldfront.net/thekolwiki/index.php/Drink_Categories). |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | The [kingdom of loathing wiki](http://kol.coldfront.net/thekolwiki/index.php/Martini) has a potency value for most, if not all, drinks, and it is visible in the item description.
[For a normal character](http://kol.coldfront.net/thekolwiki/index.php/Drunkenness) the maximum drunkenness without being fall-down-drunk is 14. So 15 and above is to much.
Getting a Liver of Steel increases your maximum safe inebriety to 19. | KoL Mafia has a great food and drink menu, where the fullness and drunkenness are listed along with the adv gained for consuming. A great tool for speed runs.
KoL mafia is a java program, that helps with planning and adventuring I the kingdom. It supports all kinds of scripts, to automate the tasks as well as a enhanced browser that displays combat info (think HP, at, def) quest items to collect etc. The link can be found here: [mafia](http://kolmafia.sourceforge.net)
The use of this tool is sometimes frowned upon, since you don't get to experience the unknown. I personally used it to automate my castle farming, and later to have softcore pull scripts. |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | The amount of Drunkeness you can have before becoming completely useless depends on your skills and what kind of run you are doing. For the purposes of normal ascensions, your alcohol tolerance runs at about a baseline 15. At and over that, you're face-down in the gutters. You can increase your tolerance by consuming a steel margarita, received from the Azazel in Hell quest.
Avatars of Boris and Zombie Slayers are lightweights, only having a tolerance of 5, while Avatars of Jarlsberg can handle slightly better at 10. Avatars of Sneaky Pete, on the hand, pretty much have two functional livers and have a base tolerance of 20.
Note that these numbers are the levels of Drunkenness *at which* you become falling-down drunk. The amount of alcohol you can drink and still actually adventure is the aforementioned appropriate number minus 1. So to more clearly illustrate my point:
* Normal ascension - 14 Drunkenness
* Avatar of Boris/Zombie Slayer - 4 Drunkenness
* Avatar of Jarlsberg - 9 Drunkenness
* Avatar of Sneaky Pete - 19 Drunkenness
* Actually Ed - 0 Drunkenness
* consuming steel margarita - +5 Drunkenness tolerance
* Nightcap (Avatar of Jarlsberg skill) - +5 Drunkenness tolerance
* Hard Drinker (Avatar of Sneaky Pete skill) - +10 Drunkenness tolerance
* Hollow Leg (Skill gained from Sloppy Jalopy) - +1 Drunkenness tolerance
* Replacement Liver (Actually Ed skill) - +5 Drunkenness tolerance | You can get up to 14 drunkenness safely by default, and 19 if you get the liver of steel from the Deep Fat Friers side quest.
As a rule of thumb, beers and wines give you 1 or 2 drunkenness, spirits and basic mixed drinks give three, fancy mixed drinks(umbrella, coconut, etc) give 4. |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | You can get up to 14 drunkenness safely by default, and 19 if you get the liver of steel from the Deep Fat Friers side quest.
As a rule of thumb, beers and wines give you 1 or 2 drunkenness, spirits and basic mixed drinks give three, fancy mixed drinks(umbrella, coconut, etc) give 4. | KoL Mafia has a great food and drink menu, where the fullness and drunkenness are listed along with the adv gained for consuming. A great tool for speed runs.
KoL mafia is a java program, that helps with planning and adventuring I the kingdom. It supports all kinds of scripts, to automate the tasks as well as a enhanced browser that displays combat info (think HP, at, def) quest items to collect etc. The link can be found here: [mafia](http://kolmafia.sourceforge.net)
The use of this tool is sometimes frowned upon, since you don't get to experience the unknown. I personally used it to automate my castle farming, and later to have softcore pull scripts. |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | The amount of Drunkeness you can have before becoming completely useless depends on your skills and what kind of run you are doing. For the purposes of normal ascensions, your alcohol tolerance runs at about a baseline 15. At and over that, you're face-down in the gutters. You can increase your tolerance by consuming a steel margarita, received from the Azazel in Hell quest.
Avatars of Boris and Zombie Slayers are lightweights, only having a tolerance of 5, while Avatars of Jarlsberg can handle slightly better at 10. Avatars of Sneaky Pete, on the hand, pretty much have two functional livers and have a base tolerance of 20.
Note that these numbers are the levels of Drunkenness *at which* you become falling-down drunk. The amount of alcohol you can drink and still actually adventure is the aforementioned appropriate number minus 1. So to more clearly illustrate my point:
* Normal ascension - 14 Drunkenness
* Avatar of Boris/Zombie Slayer - 4 Drunkenness
* Avatar of Jarlsberg - 9 Drunkenness
* Avatar of Sneaky Pete - 19 Drunkenness
* Actually Ed - 0 Drunkenness
* consuming steel margarita - +5 Drunkenness tolerance
* Nightcap (Avatar of Jarlsberg skill) - +5 Drunkenness tolerance
* Hard Drinker (Avatar of Sneaky Pete skill) - +10 Drunkenness tolerance
* Hollow Leg (Skill gained from Sloppy Jalopy) - +1 Drunkenness tolerance
* Replacement Liver (Actually Ed skill) - +5 Drunkenness tolerance | Normally you get the *falling-down-drunk* state when you have 15 or more drunkenness, but you can upgrade it to 20 by consuming a [Steel Margarita](http://kol.coldfront.net/thekolwiki/index.php/Steel_margarita) which is a reward for an optional quest.
You can see the amount of drunkenness you gain from a drink by looking at the "potency" in the item description. A general rule of thumb is:
* Beer: 1
* Shot of Schnapps: 1
* Pure Booze: 3
* 2-ingredient Cocktail: 3
* 3-ingredient Cocktail: 4
When you want to know the details about a specific drink, you can look up on [the wiki](http://kol.coldfront.net/thekolwiki/index.php/Drink_Categories). |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | The amount of Drunkeness you can have before becoming completely useless depends on your skills and what kind of run you are doing. For the purposes of normal ascensions, your alcohol tolerance runs at about a baseline 15. At and over that, you're face-down in the gutters. You can increase your tolerance by consuming a steel margarita, received from the Azazel in Hell quest.
Avatars of Boris and Zombie Slayers are lightweights, only having a tolerance of 5, while Avatars of Jarlsberg can handle slightly better at 10. Avatars of Sneaky Pete, on the hand, pretty much have two functional livers and have a base tolerance of 20.
Note that these numbers are the levels of Drunkenness *at which* you become falling-down drunk. The amount of alcohol you can drink and still actually adventure is the aforementioned appropriate number minus 1. So to more clearly illustrate my point:
* Normal ascension - 14 Drunkenness
* Avatar of Boris/Zombie Slayer - 4 Drunkenness
* Avatar of Jarlsberg - 9 Drunkenness
* Avatar of Sneaky Pete - 19 Drunkenness
* Actually Ed - 0 Drunkenness
* consuming steel margarita - +5 Drunkenness tolerance
* Nightcap (Avatar of Jarlsberg skill) - +5 Drunkenness tolerance
* Hard Drinker (Avatar of Sneaky Pete skill) - +10 Drunkenness tolerance
* Hollow Leg (Skill gained from Sloppy Jalopy) - +1 Drunkenness tolerance
* Replacement Liver (Actually Ed skill) - +5 Drunkenness tolerance | KoL Mafia has a great food and drink menu, where the fullness and drunkenness are listed along with the adv gained for consuming. A great tool for speed runs.
KoL mafia is a java program, that helps with planning and adventuring I the kingdom. It supports all kinds of scripts, to automate the tasks as well as a enhanced browser that displays combat info (think HP, at, def) quest items to collect etc. The link can be found here: [mafia](http://kolmafia.sourceforge.net)
The use of this tool is sometimes frowned upon, since you don't get to experience the unknown. I personally used it to automate my castle farming, and later to have softcore pull scripts. |
145,703 | Different drinks get me drunk at different speeds, is there any way of knowing how drunk a drink will make me? How drunk do I need to get before I become fall-down-drunk? | 2013/12/11 | [
"https://gaming.stackexchange.com/questions/145703",
"https://gaming.stackexchange.com",
"https://gaming.stackexchange.com/users/3610/"
] | Normally you get the *falling-down-drunk* state when you have 15 or more drunkenness, but you can upgrade it to 20 by consuming a [Steel Margarita](http://kol.coldfront.net/thekolwiki/index.php/Steel_margarita) which is a reward for an optional quest.
You can see the amount of drunkenness you gain from a drink by looking at the "potency" in the item description. A general rule of thumb is:
* Beer: 1
* Shot of Schnapps: 1
* Pure Booze: 3
* 2-ingredient Cocktail: 3
* 3-ingredient Cocktail: 4
When you want to know the details about a specific drink, you can look up on [the wiki](http://kol.coldfront.net/thekolwiki/index.php/Drink_Categories). | KoL Mafia has a great food and drink menu, where the fullness and drunkenness are listed along with the adv gained for consuming. A great tool for speed runs.
KoL mafia is a java program, that helps with planning and adventuring I the kingdom. It supports all kinds of scripts, to automate the tasks as well as a enhanced browser that displays combat info (think HP, at, def) quest items to collect etc. The link can be found here: [mafia](http://kolmafia.sourceforge.net)
The use of this tool is sometimes frowned upon, since you don't get to experience the unknown. I personally used it to automate my castle farming, and later to have softcore pull scripts. |
246,092 | Is there such a thing as an insulated gate SCR or anything fitting that description? | 2016/07/15 | [
"https://electronics.stackexchange.com/questions/246092",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/115941/"
] | you can make one like this:
[simulate this circuit](/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fdwri0.png) – Schematic created using [CircuitLab](https://www.circuitlab.com/) | There are several types of SCR.
Standard SCR : turns on at application of gate signal. Stays on in absence of gate signal until anode cathode current falls below threshold current level.
GTO : Gate Turn Off SCR : SCR can be commanded to turn off under certain conditions.
Insulated Gate Bipolar Transistor : IGBT : Stays on while gate signal applied.
Turns off when gate signal is removed (regardless of collector current)
Simple description of each, further search will help based upon key words. .
I don't know of any device available that fits your description |
246,092 | Is there such a thing as an insulated gate SCR or anything fitting that description? | 2016/07/15 | [
"https://electronics.stackexchange.com/questions/246092",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/115941/"
] | Apparently [MOS-controlled thyristors](https://en.m.wikipedia.org/wiki/MOS-controlled_thyristor) were commercially available briefly, but were withdrawn due to performance issues.
[](https://i.stack.imgur.com/8Oj4h.png)
The structure looked like this:
[](https://i.stack.imgur.com/8fJet.jpg) | There are several types of SCR.
Standard SCR : turns on at application of gate signal. Stays on in absence of gate signal until anode cathode current falls below threshold current level.
GTO : Gate Turn Off SCR : SCR can be commanded to turn off under certain conditions.
Insulated Gate Bipolar Transistor : IGBT : Stays on while gate signal applied.
Turns off when gate signal is removed (regardless of collector current)
Simple description of each, further search will help based upon key words. .
I don't know of any device available that fits your description |
246,092 | Is there such a thing as an insulated gate SCR or anything fitting that description? | 2016/07/15 | [
"https://electronics.stackexchange.com/questions/246092",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/115941/"
] | Apparently [MOS-controlled thyristors](https://en.m.wikipedia.org/wiki/MOS-controlled_thyristor) were commercially available briefly, but were withdrawn due to performance issues.
[](https://i.stack.imgur.com/8Oj4h.png)
The structure looked like this:
[](https://i.stack.imgur.com/8fJet.jpg) | you can make one like this:
[simulate this circuit](/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fdwri0.png) – Schematic created using [CircuitLab](https://www.circuitlab.com/) |
246,092 | Is there such a thing as an insulated gate SCR or anything fitting that description? | 2016/07/15 | [
"https://electronics.stackexchange.com/questions/246092",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/115941/"
] | you can make one like this:
[simulate this circuit](/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fdwri0.png) – Schematic created using [CircuitLab](https://www.circuitlab.com/) | That's it:
[simulate this circuit](/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fgGn8z.png) – Schematic created using [CircuitLab](https://www.circuitlab.com/) |
246,092 | Is there such a thing as an insulated gate SCR or anything fitting that description? | 2016/07/15 | [
"https://electronics.stackexchange.com/questions/246092",
"https://electronics.stackexchange.com",
"https://electronics.stackexchange.com/users/115941/"
] | Apparently [MOS-controlled thyristors](https://en.m.wikipedia.org/wiki/MOS-controlled_thyristor) were commercially available briefly, but were withdrawn due to performance issues.
[](https://i.stack.imgur.com/8Oj4h.png)
The structure looked like this:
[](https://i.stack.imgur.com/8fJet.jpg) | That's it:
[simulate this circuit](/plugins/schematics?image=http%3a%2f%2fi.stack.imgur.com%2fgGn8z.png) – Schematic created using [CircuitLab](https://www.circuitlab.com/) |
2,952,834 | I've been researching about building desktop application with JavaFX framework. Does anyone have any good or bad experience that can tell us?
Is Oracle committed to JavaFX? | 2010/06/01 | [
"https://Stackoverflow.com/questions/2952834",
"https://Stackoverflow.com",
"https://Stackoverflow.com/users/157002/"
] | Oracle have numerous times stated their commitment to JavaFX. The real problem however is that the developers are mostly unimpressed with JavaFX and its adoption so far is very little. Many analysts think that JavaFX came too late and was practically stillborn. If Oracle don't devise quickly a way to make money out of it I can only assume their commitment to the technology will fade away... | Check out these URLs to determine for yourself if Oracle is committed to JavaFX or not.
<http://java.com/roadtrip>.
<http://www.oraclemagazine-digital.com/oraclemagazine/20100708?sub_id=qRRwFN1nldhW&folio=48#pg51>
<http://www.oracle.com/us/javaonedevelop/063296.html#javafx> |
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