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A herbivore is an animal that obtains its energy and nutrients by feeding on plants. Different types of herbivores eat different plant parts. For example, folivores feed on leaves, frugivores feed on fruits, granivores feed on seeds, pollinivores feed on pollen, and nectarivores feed on nectar. Herbivores can vary grea... | <urn:uuid:327aa761-d1f4-4278-82cf-07922d468ab7> | 3.796875 | 1,773 | Knowledge Article | Science & Tech. | 37.340206 |
Synchronous orbit: An orbit where the satellite has an orbital period equal to the average rotational period (earth's is: 23 hours, 56 minutes, 4,091 seconds) of the body being orbited and in the same direction of rotation as that body. To a ground observer such a satellite would trace an analemma (figure 8) in the sky... | <urn:uuid:de56bcb6-e057-4b7b-9d62-3554b6c7b328> | 3.953125 | 831 | Structured Data | Science & Tech. | 43.910368 |
Such a scenario could make floods fiercer, damage more crops, and worsen the spread of diseases such as malaria, scientists say.
Rainfall patterns are already shifting as Earth warms under a blanket of humanmade greenhouse gases, experts say.
Study co-author Richard P. Allan, an atmospheric scientist at the
University ... | <urn:uuid:67ef92ef-593c-4617-ada1-2abd0abfe4d8> | 3.78125 | 391 | Truncated | Science & Tech. | 36.753378 |
Joined: 16 Mar 2004
|Posted: Tue Apr 03, 2007 11:23 am Post subject: Silica particle sparks life in protein
|Tiny formless particles in water solution take on a well-ordered and functional structure as soon as they come into contact with nanoparticles of silica. A unique breakthrough by researchers at Linkoping Univers... | <urn:uuid:78b3301c-0dbd-437d-95bd-2fe3201894a0> | 3.015625 | 523 | Comment Section | Science & Tech. | 25.759205 |
A prize of $25 million for anyone who can come up with a system for removing greenhouse gases from the atmosphere was launched on Friday. It is the biggest prize in history, claims its sponsor, Richard Branson.
The head of Virgin Group said at the launch in London, UK, that the prize was not for removing emissions from... | <urn:uuid:17c7d870-3618-49b5-8c2e-1889c2b2df98> | 2.703125 | 1,263 | Comment Section | Science & Tech. | 46.326996 |
WHAT happened before our universe began? According to two theoretical physicists, if there was a universe before ours then it should have been remarkably similar to this one, with the same basic ingredients and properties. It may even be possible to see a faint picture of our parent universe imprinted on the sky.
Quest... | <urn:uuid:aad56013-318d-41af-b21b-0b18aadfc772> | 3.484375 | 196 | Truncated | Science & Tech. | 35.309412 |
YES! Just what Reeko likes to see - a kid interested in learning! Check
back here every week to see what the new Science Word of the Day is. Just
think, after a year of this you'll be a genius!
We all know we must have water, or H2O, to survive. Since water makes up 66 percent of the human body, it’s pretty easy to und... | <urn:uuid:68340330-c582-4122-9929-54bb36a79f26> | 2.921875 | 332 | Personal Blog | Science & Tech. | 68.604899 |
seen on the previous page
that the Julia Set has four independent
parameters (the real and imaginary components of the start-value of z,
and the real and imaginary components of c, the
added constant), so, technically the full Julia Set is a
it's traditional to use slices taken through the AB
can generate cross-section... | <urn:uuid:0ce5ee66-c70e-496f-a49b-5625a6dbe3a8> | 3.375 | 2,445 | Tutorial | Science & Tech. | 43.776415 |
|www . Science-Projects . com|
SURVIVAL CURVES and MINIMUM LETHAL HITS
| go to previous page on how to use semilog graph paper |
This collection of "dose plots" or "survival curves" starts with it origin at the red "1". From it arise three plots, a, b, and c. Plot "a" is of the most sensitive critter, while that of "c"... | <urn:uuid:97e089d9-eea3-40ff-974a-f67dc74a7c41> | 3.546875 | 606 | Tutorial | Science & Tech. | 66.451112 |
Researchers report that they've found a strain of bacteria that can swap arsenic for the element phosphorus in its metabolism -- even incorporating arsenic into its DNA. Writing this week in the journal Science, the scientists describe the bacteria harvested from the highly saline, arsenic-containing waters of Moro Lak... | <urn:uuid:eadee963-4d0d-49b1-b863-140209ac74fb> | 3.015625 | 140 | Truncated | Science & Tech. | 23.718288 |
Related Information Links
NOTE: this application requires that you have a calculator capable of doing MATRICES. Most if not all graphical calculators have this capability. This reading uses the Texas Instrument TI-82 Graphical Calculator as an example.
Early on in your chemistry studies, you will have ample opportunity... | <urn:uuid:d5e9851e-9d7e-4764-9af5-7eb30babbb5a> | 4.21875 | 760 | Tutorial | Science & Tech. | 56.499272 |
We mapped substantial migration of the river channel between the City of Winslow and the Navajo Nation community of Leupp; in a human lifetime the river has moved more than a mile across its valley floor.
Explains biological soil crusts, organism-produced soil formations commonly found in semiarid and arid environments... | <urn:uuid:126a1689-ba09-4185-b976-9ecf50226dbd> | 3.171875 | 329 | Content Listing | Science & Tech. | 31.927187 |
Life in the Deep Ocean
The deep ocean is very cold, under high pressure, and always dark because sunlight can not get down that far. Less life can survive in the deep ocean than in other parts of the ocean because of these conditions. For some animals, food comes from the bodies of dead fish, dead plankton, and even de... | <urn:uuid:e9a2b82f-d368-4da9-a914-3a41d5e95f2e> | 4.03125 | 443 | Knowledge Article | Science & Tech. | 51.482941 |
Search results for 1 - 10 of 77
- Biography of Albert Einstein
- Albert Einstein was a German-born theoretical physicist. He is best known for his theory of relativity and specifically mass-energy equivalence, E = mc2. Einstein received the 1921 Nobel Prize in Physics "for his services to Theoretical Physics, and espec... | <urn:uuid:88ea97ef-3e73-4e59-9b03-6dc9b6758f87> | 2.875 | 234 | Content Listing | Science & Tech. | 54.701836 |
Country of Origin: United States of America
3-D Test: 8.9 x 8.9 x 1.3cm (3 1/2 x 3 1/2 x 1/2 in.)
Contents Overall: Metal, plastic, rubber insulation
This bio-harness was flown aboard Apollo 11 in July 1969, but was not worn during the mission. It is not identified as to which astronaut it was assigned. The Apollo Bio-... | <urn:uuid:983b5135-f579-4f16-9006-b6d82419c565> | 2.765625 | 214 | Knowledge Article | Science & Tech. | 57.859707 |
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
2000 December 25
Explanation: If you look closely at the shadow of this tree, you will see something quite unusual: it is composed of hundreds of im... | <urn:uuid:81376508-38f2-46af-a684-b570ceefd37b> | 3.375 | 214 | Knowledge Article | Science & Tech. | 42.143077 |
Even a small degree of global warming will have large effects on ecosystems, and ultimately on us. Take, for example, the rivers in upstate New York and New England, where reduced ice cover is changing the life along the river.
Lilliputian wildflowers will soon line the Hudson's banks. In what are known as riverside ic... | <urn:uuid:1cd01053-9f41-4caa-a34b-896cfee547d3> | 3.734375 | 617 | Personal Blog | Science & Tech. | 44.677394 |
Characteristics of tree hollows used by Australian arboreal and scansorial mammals
Goldingay, RL 2012, 'Characteristics of tree hollows used by Australian arboreal and scansorial mammals', Australian Journal of Zoology, vol. 59, no. 5, pp. 277-294.
Published version available from:
Many species of non-flying mammal dep... | <urn:uuid:d3c86f0d-1f1a-405e-b84c-3752d91a73e6> | 3.578125 | 302 | Academic Writing | Science & Tech. | 36.718466 |
Why python and unicode leads to frustration
In python-2.x, there's two types that deal with text.
str is for strings of bytes. These are very similar in nature to how strings are handled in C.
unicode for strings of unicode codepoints.
In the python-2.x world, these are used pretty interchangably but there are several ... | <urn:uuid:d2f88d39-00f4-4312-9afe-f69b106ccc6f> | 2.734375 | 400 | Personal Blog | Software Dev. | 61.975689 |
Measurement of the downhole velocity of the CIROS-1 drillhole after the completion of drilling by lowering a hydrophone down the drillhole was unsuccessful due to equipment failure. Determination of the dip, faults and strong reflectors in the geologic structure in the immediate vicinity of the CIROS-1 drillhole was co... | <urn:uuid:781f63dc-dac0-4c1a-9555-6b4329ad2704> | 2.828125 | 243 | Academic Writing | Science & Tech. | 27.792545 |
Calling Function Modules
This section describes calling function modules from the Function Builder.
Finding Function Modules
Before programming a new function or creating a new function module, you should look in the Function Builder to see whether there is an existing function module that already performs the same tas... | <urn:uuid:c0390c3a-f959-49eb-98b3-18729d047a5d> | 2.703125 | 1,504 | Documentation | Software Dev. | 51.322743 |
Motion makes the world go 'round. Motion makes the moon go 'round too. In fact, motion makes lots of things go. When we think of motion we often think of cars, bicycles, kids running, basketballs bouncing and airplanes flying. But motion is so much more. Motion is important to our lives and impacts so many things that ... | <urn:uuid:833860a3-ff52-489e-aac5-d8d6b77703db> | 3.921875 | 1,317 | Knowledge Article | Science & Tech. | 66.522594 |
Among the problems caused by climate change, we’ve been told, is its grave threat to polar bears. Earthjustice, for one, says the animals “are facing unprecedented threats” from global warming. Well, not exactly.
Eight years ago, Environment Canada estimated that by 2011, the polar bear population on the western shore ... | <urn:uuid:4448f7fa-836a-4b15-afa0-c834eb1d900b> | 3.359375 | 225 | Comment Section | Science & Tech. | 58.837136 |
Reply to comment
The Intergovernmental Panel on Climate Change (IPCC) predicted that between 20-30% of all species on Earth could become extinct by the end of the century because of climate change and habitat loss.
According to the IPCC, global warming is no longer a question. It is estimated that by 2050, between 20 a... | <urn:uuid:feddfcfc-dbf4-4626-8298-798ba0ca85d8> | 3.203125 | 123 | Comment Section | Science & Tech. | 53.428909 |
It seems that there is a lot of confusion as to what isotopes, radioisotopes, nuclides, and radionuclides are. First, we have to go back to chemistry class and remember the periodic table of elements, which lists all of the chemical elements in an organized fashion.
The periodic table reports each element with its aver... | <urn:uuid:45b4a729-c23e-48cb-8490-f0b05e647840> | 4.875 | 813 | Knowledge Article | Science & Tech. | 32.35329 |
Tracking Debris from the Tohoku Tsunami
by NASA Earth Observatory, creative commons/attribution, flickr.
The map above shows the output of the Surface Currents from Diagnostic (SCUD) model, an attempt to simulate where and how that debris would disperse. Orange and red shaded areas represent parcels of water with a hig... | <urn:uuid:81cc62ec-d873-45a5-b4e6-f95b1ffd2959> | 2.90625 | 122 | Personal Blog | Science & Tech. | 40.045 |
Find information on common issues.
Ask questions and find answers from other users.
Suggest a new site feature or improvement.
Check on status of your tickets.
In 1959, physicist Richard Feynman presented an
amazing talk entitled There's Plenty of Room at the Bottom, in which he proposed making very small circuits out ... | <urn:uuid:800a392e-872e-4086-ae87-8190cc3b2e30> | 3.609375 | 386 | Content Listing | Science & Tech. | 27.015974 |
The term "POJO" is widely used in the Java programming world, but is sometimes used to mean something more specific than what was originally intended.
Furthermore, such code (whether called POJO or not by its authors) is a style which I think would be useful to give a specific name to.
What's a POJO?
The original meani... | <urn:uuid:66f63b14-1b36-442e-bc8a-b267f44e6244> | 3.140625 | 366 | Personal Blog | Software Dev. | 52.495 |
Are Household Powders Acids or Bases?
Talk It Over
Many everyday substances are either acids or bases. Orange juice, vinegar, and cola drinks are acids. Many cleaners, such as household ammonia, are bases. Some substances, called indicators, are one color in an acid and another color in a base. You can use them to tell... | <urn:uuid:e41f130e-6bc2-4654-988e-a5ccf5a48af8> | 3.21875 | 681 | Tutorial | Science & Tech. | 59.492948 |
February 23 2009 / by Garry Golden / In association with Future Blogger.net
Category: Technology Year: General Rating: 7 Hot
One of the most exciting areas of 'Nano-bio' research is the engineered integration of 'wet' and 'dry' nanoscale systems that might revolutionize research in genetics and proteomics (Study of Pro... | <urn:uuid:bba784b6-5d27-4268-9163-961b8808ee40> | 2.71875 | 145 | Truncated | Science & Tech. | 39.724058 |
Knowledge Networks and Neural Networks
A knowledge network cheats - it uses different operators to do different things.
Neural networks are somehow considered "pure" because each node is precisely the same as every other node, the only thing that differs is the weighting in the connections. That would be of benefit in ... | <urn:uuid:95a7cfd3-b9dd-4c7c-9652-2221f7346c4f> | 3.171875 | 1,262 | Knowledge Article | Science & Tech. | 38.911597 |
11 April 2011
Posted in Science Live!
DNA Day at the Orlando Science Center is just a month away, so in honor of this amazing molecule I thought it would be neat to look over some genetics news.
This article is from last year, but the research continues. Neanderthals, or cavemen, have long been thought to be dull, slow... | <urn:uuid:4d1b508c-5a59-41ad-ace6-359e210b08cf> | 3.0625 | 414 | Personal Blog | Science & Tech. | 59.742416 |
In numerical analysis
, Aitken's delta-squared process
is a series acceleration
method, used for accelerating the rate of convergence
of a sequence. It is named after Alexander Aitken
, who introduced this method in 1926. It is most useful for accelerating the convergence of a sequence that is converging linearly.
Give... | <urn:uuid:9f5179b0-f67a-4f5c-aa9c-053a7e8cd162> | 3.09375 | 461 | Knowledge Article | Science & Tech. | 29.770054 |
Cuttlefish change the patterns on their body for courtship rituals, when they eat a snack, and most famously when they want to blend in. How they change their skin patterns may tell us something about how they see the world, says Duke biologist Sarah Zylinski. Her work suggests that when cuttlefish see incomplete shape... | <urn:uuid:b8049373-685f-4431-9f7b-97e6a511c417> | 2.984375 | 122 | Truncated | Science & Tech. | 56.533178 |
Some forms of bacteria are known as Archaea
Click on image for full size
To date, the oldest known life forms are certain types of bacteria that have been found in
Australian rocks that date back 3.5 billion years ago. At this time, oxygen was not present
in the Earth's atmosphere, thus these bacteria must have been an... | <urn:uuid:33a02cca-7dc8-401f-9db0-f55d5d94c3a4> | 3.734375 | 185 | Content Listing | Science & Tech. | 44.085 |
NASA studies long-term climate warming trendJanuary 19th, 2013 at 6:30 pm by Natalie Stoll under Weather
From NASA Science:
NASA Finds Long-Term Climate Warming Trend
Jan. 15, 2013: NASA scientists say 2012 was the ninth warmest of any year since 1880, continuing a long-term trend of rising global temperatures. With th... | <urn:uuid:cb991e72-1dcc-4e0b-a8d6-81dffee91108> | 3.296875 | 411 | Truncated | Science & Tech. | 51.101574 |
Reposted from ENERGY BULLETIN (http://www NULL.energybulletin NULL.net/stories/2012-08-23/building-resilience-changing-climate)
Climate shocks are on the way. We’ve already spewed so much carbon into the atmosphere that a cascade of worsening crop failures, droughts, floods, and freak storms is virtually guaranteed. Yo... | <urn:uuid:6f502c80-76d1-4737-9e4a-c05ab1f0a19b> | 2.90625 | 1,411 | Nonfiction Writing | Science & Tech. | 21.914687 |
As history has proven, earthquakes are one of the most destructive natural disasters. Engineers and scientists study them to determine how, where and why they happen to reduce the damage they can cause.
More than 100 years ago on April 18, an earthquake struck California. It lasted almost 60 seconds long and is known a... | <urn:uuid:aec6ae1e-5590-48f9-8ecd-432c5486ae59> | 4.125 | 257 | Knowledge Article | Science & Tech. | 53.385351 |
#haskell asked whether you could recover a function's name from its value, i.e.
GHCi> name id "id" GHCi> name map "map"
This is easy in some languages. But Haskell is not designed to provide this kind of run-time information. We'll need some non-portable hacks. I tested this code with GHC 6.12.1 on
amd64 Linux; see bel... | <urn:uuid:10bd8a58-dc72-4bf1-a3a9-e82b99662c37> | 2.71875 | 1,568 | Documentation | Software Dev. | 62.963374 |
Two trains set off at the same time from each end of a single
straight railway line. A very fast bee starts off in front of the
first train and flies continuously back and forth between the. . . .
Have you ever wondered what it would be like to race against Usain Bolt?
Can you rank these sets of quantities in order, fr... | <urn:uuid:9c1a6fbe-5ae5-4c3e-902e-8d8bcdf471a1> | 3.53125 | 1,047 | Content Listing | Science & Tech. | 59.042759 |
So you really just want to make a mess and blow something up, but if you learn scientific method along the way, we’ll call it a win-win!
First, check out the description of the reaction and photos from those that have tried it, here:
Mentos Diet Coke Geyser at Steve Spangler Science
Then, using what you have learned on... | <urn:uuid:f94f30d6-12c7-4715-891f-fb8e54833e3d> | 3.53125 | 303 | Tutorial | Science & Tech. | 54.945563 |
Science Fair Project Encyclopedia
The relationship between heat and energy is similar to that between work and energy. Heat flows between regions that are not in thermal equilibrium; in particular, it flows from areas of high temperature to areas of low temperature. All objects (matter) have a certain amount of interna... | <urn:uuid:f9b083b2-1638-47da-8a2f-0d362bbef0ea> | 4.0625 | 1,981 | Knowledge Article | Science & Tech. | 39.707563 |
Case Study: Friedrich Bessel and the Companion of Sirius
Important advances in astronomy often come from increased precision of observations. The work of the German astronomer and mathematician Friedrich Wilhelm Bessel (1784 –1846) provides a good illustration. Among his many other accomplishments, Bessel developed tec... | <urn:uuid:d5dd9191-42ef-41a7-9c45-0cd9b2b6b817> | 3.890625 | 1,583 | Knowledge Article | Science & Tech. | 45.242884 |
Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
In the eastern tropics, Nypa fruticans may form dense colonies on estuarine muds; these pure stands of nipa palm ( Nypa) extend for hundreds of he... | <urn:uuid:0b1c8644-690d-4e12-b157-9040d37ed9a1> | 3.140625 | 256 | Knowledge Article | Science & Tech. | 45.877115 |
This week's book giveaway is in the General Computing forum. We're giving away four copies of Arduino in Action and have Martin Evans, Joshua Noble, and Jordan Hochenbaum on-line! See this thread for details.
Not sure, what made you to think it is sorted. In your code, the values are printed in the order of system.out.... | <urn:uuid:7005681a-06a3-4458-9ad7-2be2cd400521> | 2.90625 | 318 | Comment Section | Software Dev. | 58.854429 |
class player: def sethp(self, hp): self.hp = hp def setmp(self, mp): self.mp = mp def setatt(self, att): self.att = att def setdef(self, arm): self.arm = arm def battle(hero, noob): print("hero hp"), hero.hp,("noob hp"), noob.hp battlechoice = input(int("what would u like to do")) if battlechoice==1: noob.hp-(hero.att-... | <urn:uuid:57a87d6c-a9c3-4f47-9d8c-313c4ede8632> | 2.796875 | 414 | Comment Section | Software Dev. | 92.186685 |
Emissions-free flight could be a possibility in the future, as Boeing is working to develop a light plane that is powered by fuel cells and an electric motor instead of fossil fuels in 12 month's time. The only emissions from such a plane would be water vapor.
At this point, the plane would be a small craft, and might ... | <urn:uuid:b4db2310-f9d1-4bc0-be13-86011326eb9b> | 3.03125 | 169 | Comment Section | Science & Tech. | 58.266273 |
Are you getting ready for the holidays? You can still fit in some family math into your busy schedule. There's something here for all ages!
Holiday Calorie Count
Are you eating more than normal? I know I eat more chocolate over the holidays!
Try tracking what you eat and your activities for the day, charting the calori... | <urn:uuid:94256fa0-7a68-455e-8ea8-6c042c7c9349> | 2.828125 | 1,429 | Content Listing | Science & Tech. | 60.476836 |
We live in a world that is defined by three spatial dimensions and one
time dimension. Objects move within this domain in two ways.
or changes location, from one
point to another.
And an object
or changes its attitude.
In general, the motion of any object
involves both translation and rotation.
The translations are in ... | <urn:uuid:7d12496b-d5f6-4b61-afeb-142a3f5d53ff> | 4.1875 | 254 | Tutorial | Science & Tech. | 43.937203 |
|Contents||Plain text (including entities)|
The TITLE element gives the document's title. Each document must have exactly one TITLE within the HEAD. TITLE contains plain text and entities; it may not contain other markup.
A good TITLE should be short and specific to the document's content so that it can be used as a ti... | <urn:uuid:9177774a-5861-4164-a8dc-ed95ef765a2a> | 3.25 | 108 | Documentation | Software Dev. | 61.109636 |
Converting to String
String class provides us with the method String.valueOf(some stuff) that basically converts "some stuff" into a string..
But we can also concatenate "some stuff" with an empty String ("").
Both these methods result in a String representation of an object(or other data type) so my question is what i... | <urn:uuid:ea249daa-902a-4e62-b6d5-87c0f47ac142> | 2.796875 | 283 | Comment Section | Software Dev. | 45.32897 |
A runaway star, plowing through the depths of space and piling up interstellar material before it, can be seen in this ultraviolet image from NASA’s Galaxy Evolution Explorer. The star, called CW Leo,...› View Image
This is the Helix nebula, as seen in ultraviolet light. It is a star like our sun but at the very end of... | <urn:uuid:574b5e7c-3928-4e5e-9644-bc1b0ddbc5c1> | 2.765625 | 906 | Content Listing | Science & Tech. | 49.782396 |
An assertion is a statement in the Java TM programming language that enables you to test your assumptions about your program. For example, if you write a method that calculates the speed of a particle, you might assert that the calculated speed is less than the speed of light. Each assertion contains a boolean expressi... | <urn:uuid:608310d5-72ed-442e-b3bc-6f1833346bc1> | 3.40625 | 1,728 | Comment Section | Software Dev. | 46.336603 |
Vectors - Fundamentals and Operations
Explore nine lessons from a two-week unit on vectors by the Center for Innovation in Science and Engineering Education (CIESE).Curriculum Corner
Learning requires action. Give your students this sense-making activity from The Curriculum Corner.Treasures from TPF
Need ideas? Need he... | <urn:uuid:516dbb46-2058-4d08-bf82-4cf5e7861530> | 4.28125 | 1,547 | Truncated | Science & Tech. | 49.341327 |
View Full Version : Chemistry Problem
05-12-2008, 08:38 PM
Ok, so i have this lab on the molar mass of butane, except im totally having a brain fart, and cant remember how to do it, like i have the PV=nRT, but once i have the number from there im stuck, any ideas?
05-12-2008, 10:36 PM
Oooh this is right up my ally. I j... | <urn:uuid:71d275c3-1d30-45e1-9465-1204b1923e2d> | 3 | 322 | Comment Section | Science & Tech. | 84.513433 |
Narrator: This is Science Today. Radioactive waste decays over time and this poses long-term storage problems because materials currently used to encase radioactive waste are ultimately damaged and are then susceptible to rupturing or leaching. Scientist Kurt Sickafus of the Los Alamos National Laboratory says one of t... | <urn:uuid:b55bfdf1-b4ba-46f0-b4a5-7334fe8ef927> | 3.96875 | 241 | Audio Transcript | Science & Tech. | 23.146378 |
Predaceous diving beetles
Dytiscidae - Family of insects in the order Coleoptera. These species are mostly black, dark brown, or dark green, but some have golden and other highlights. They have sharp and short jaws for biting their prey. Most are about 25 mm long but some can grow up to 45 mm long. The larvae are commo... | <urn:uuid:92ca5902-a8b3-4d36-a458-b15b5496ce5c> | 3.390625 | 2,339 | Knowledge Article | Science & Tech. | 37.105507 |
URL translation into a Page Class
In Agile Toolkit, pages are objects created from classes. For each user request only one page object is initialized. The process where an API class determines the name of the page class to initilaize is called "routing".
Let me start with an example. The page you are reading right now ... | <urn:uuid:915cdd4d-25c1-4d12-9cc9-4e0d98ae62e2> | 2.6875 | 778 | Documentation | Software Dev. | 46.713116 |
The Pioneer Effect is a mysterious observation of a number of man-made probes that venture through and beyond the Solar System. Originally noticed in the slight drift of the Pioneer 10 and Pioneer 11 spacecraft (launched in 1972 and 1973) from their calculated trajectories, scientists have been at a loss to explain the... | <urn:uuid:755b10ac-edea-4e7a-9b0f-8f56e812890b> | 3.828125 | 582 | Personal Blog | Science & Tech. | 39.085573 |
Missouri Frost Line
Commercial Agriculture/University of Missouri Extension
Many factors such as air temperature, snow cover, ground cover, soil type, soil moisture etc. will determine how deep the frost line penetrates but some long term soil temperature observations for the state can be utilized to get a general idea... | <urn:uuid:026ca88c-6d3d-442f-9e44-9811550268f9> | 3.375 | 545 | Knowledge Article | Science & Tech. | 48.948783 |
Content on this page was last updated in 2009. Some of the content may be out of date. For more information: http://coralreef.noaa.gov/
Coral reef ecosystems of the U.S. Virgin Islands
Coral reefs are a major and conspicuous component of the shelf regions of the U.S. Virgin Islands. Four other ecologically distinct mar... | <urn:uuid:dd71f2bb-b6a1-4b92-ab2b-dd370470e50d> | 3.78125 | 1,337 | Knowledge Article | Science & Tech. | 49.699754 |
print_stmt: "print" [ expression ("," expression)* [","] ]
print evaluates each expression in turn and writes the resulting object to standard output (see below). If an object is not a string, it is first converted to a string using the rules for string conversions. The (resulting or original) string is then written. A... | <urn:uuid:8ad1bc23-0b1d-4422-befa-cbc25a4002c9> | 3.40625 | 363 | Documentation | Software Dev. | 55.147972 |
Problem: Derive the double angle identities
Solution: Recall from linear algebra how one rotates a point in the plane. The matrix of rotation (derived by seeing where and go under a rotation by , and writing those coordinates in the columns) is
Next, note that to rotate a point twice by , we simply multiply the point (... | <urn:uuid:ffbf7406-0f0c-41ef-8377-fa34f7e72f54> | 3.75 | 277 | Personal Blog | Science & Tech. | 28.27347 |
The question asks me to solve
So I put it into the form :
Then I equate the coefficients:
of cos x:
of sinx:
Divide by to get:
Square and add and to get:
Except that last statement doesn't seem to be true, according to
the answers in my book and when I have a look at the two curves in a
graphing application. I tr... | <urn:uuid:d3dc873b-6497-48d8-ba96-15b52e9062ef> | 2.703125 | 196 | Q&A Forum | Science & Tech. | 82.475453 |
11.4.5. Model Fitting
a) HI Distribution and Rotation Curve
The technique of taking a model distribution for a source and smoothing it by the observing beam is well known. We can do rather better with line observations, as the distribution of HI in a particular velocity range is a function of both the density and veloc... | <urn:uuid:f37e6515-2cbe-47b6-8ca2-6e624404fdc6> | 2.765625 | 2,146 | Academic Writing | Science & Tech. | 34.120128 |
Since July 2011, heavy monsoon rains in southeast Asia have resulted in catastrophic flooding. In Thailand, about one third of all provinces are affected. On Oct. 23, 2011, when this image from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) instrument on NASA's Terra spacecraft was acquired,... | <urn:uuid:f78293af-4e17-4341-adfe-3599dbd5c36f> | 3.75 | 422 | Knowledge Article | Science & Tech. | 44.607755 |
Archives of Ask A Scientist!
About "Ask A Scientist!"
On September 17th, 1998 the Ithaca Journal ran its first "Ask A Scientist!" article in which Professor Neil Ashcroft , who was then the director of CCMR, answered the question "What is Jupiter made of?" Since then, we have received over 1,000 questions from students... | <urn:uuid:c73736ba-2290-4ef4-8129-d023c5c754d7> | 3.1875 | 568 | Q&A Forum | Science & Tech. | 57.442565 |
A thick spherical shell has an inner radius a and an
outerradius b. It is made of dielectric material with a
in which A is a constant and r is the distance from thecenter.
No free charge is present. Find D and E in thedielectric. | <urn:uuid:8742f993-1b64-4f29-b5b0-d743bc3a7bb0> | 3.0625 | 59 | Q&A Forum | Science & Tech. | 75.09625 |
Interviewee: Eric Lander.
Eric Lander talks about building on scientific discovery.
Each new fundamental discovery about life gives rise to a set of tools to use in the lab to make more discoveries. So understanding the structure of DNA suggests how it replicates, and then isolating the polymerases that copy DNA, well ... | <urn:uuid:6db3d219-caa7-4490-bca3-bb33941a4f0b> | 3.09375 | 233 | Audio Transcript | Science & Tech. | 30.198344 |
When we enter the decline phase of conventional oil—likely before 2020—we will scramble to fill the gap with alternative liquid fuels. The Hirsch Report of 2005, commissioned by the U.S. Department of Energy, took a hard look at alternatives that could respond to the scale of the problem in time to have an impact. Not ... | <urn:uuid:577a2664-0c4a-47af-8b9a-ff566615e4e0> | 2.9375 | 1,137 | Personal Blog | Science & Tech. | 60.537143 |
This reference manual describes the Erlang programming language. The focus is on the language itself, not the implementation. The language constructs are described in text and with examples rather than formally specified, with the intention to make the manual more readable. The manual is not intended as a tutorial.
Inf... | <urn:uuid:4b264c26-acae-4bfc-b6a2-e11da6ad7f92> | 2.84375 | 509 | Documentation | Software Dev. | 57.757168 |
Physical Science: Session 1
A Closer Look: Is the Moon Matter?
How Do We Know the Moon is Made of Matter?
In the video we define matter as "having weight and taking up space." Certainly the Moon seems to take up space — it appears in the sky every night, sometimes blocking our view of the stars, other planets, and even... | <urn:uuid:42439eab-961c-4ec4-9a01-ec6488c8948b> | 3.9375 | 556 | Truncated | Science & Tech. | 66.241892 |
James Urquhart, contributor
What would it look like to follow a monster hurricane as it develops? A new visualisation created by Advanced Visualization Laboratory at the National Center for Supercomputing Applications at the University of Illinois shows the dramatic evolution of hurricane Katrina, the storm that wreake... | <urn:uuid:83c17eb9-59ac-4bd6-ae17-83ba1b3065e4> | 3.796875 | 291 | Personal Blog | Science & Tech. | 39.888974 |
Data reported by the weather station: 76530
Latitude: 43.33 | Longitude: 5.05 | Altitude: 27
|Main||Year 1988 climate||Select a month|
To calculate annual averages, we analyzed data of 363 days (99.18% of year).
If in the average or annual total of some data is missing information of 10 or more days, this is not displa... | <urn:uuid:8e19af43-7c8a-4ee0-adb4-37e12a7d64cd> | 2.6875 | 354 | Structured Data | Science & Tech. | 72.726738 |
Should we go to the Moon first?
The return to the Moon could be a useful steppingstone to Mars - or a costly and unnecessary delay.
June 22, 2009
|In January 2004, President George W. Bush announced the Vision for Space Exploration (VSE). It called for completing the International Space Station, building a new human la... | <urn:uuid:4706193c-e13e-4a8d-82bf-b09be9fe17ce> | 3.015625 | 255 | Truncated | Science & Tech. | 44.263667 |
You've probably heard of the "Pacific garbage patch," also called the "trash vortex." It's a region of the North Pacific ocean where the northern jet stream and the southern trade winds, moving opposite directions, create a vast, gently circling region of water called the North Pacific Gyre — and at its center, there a... | <urn:uuid:c83a6104-7db0-4e89-81a3-ea4e50ea5b07> | 3.09375 | 1,645 | Truncated | Science & Tech. | 51.542236 |
In UNIX there is a specific error number which can be returned from system calls. This error, EAGAIN is used by the OS kernel whenever it has a complex state in which it is deemed too hard to resolve a proper answer to the userland application. The solution is almost a non-solution: you punt the context back to the use... | <urn:uuid:982ccb69-2182-4d8b-a4d1-38d57e5afd15> | 2.796875 | 797 | Personal Blog | Software Dev. | 50.911695 |
for the electron in the Hydrogen atom, the orbital motion doesn't interact with the electron's spin, so "the wave function" pretty much means just a complex $\psi(x,y,z)$. You may choose the electron's spin to be up or down independently of that.
However, you must realize that a wave function of three quarks has many m... | <urn:uuid:914804b2-9b55-4451-bb36-75c4604d631d> | 3.234375 | 1,032 | Q&A Forum | Science & Tech. | 48.247094 |
The cloud-free pictures, taken with a high-resolution visible and infrared imager aboard a Nasa and National Oceanic and Atmospheric Administration satellite, capture the night lights of Earth in unprecedented detail.
The sensor can capture the equivalent of three lowlight images simultaneously, giving researchers the ... | <urn:uuid:98d9965b-890a-4bea-91d2-1c422081fe8e> | 2.78125 | 82 | Truncated | Science & Tech. | 21.395 |
Humans have walked the Earth for 190,000 years, a mere blip in Earth's 4.5-billion-year history. Learn more about the planet's tumultuous past.
More About the Prehistoric World
Follow the blog from the Spitsbergen Expedition as they unearth "sea monsters″ from the Upper Jurassic Period 150 million years ago.
National G... | <urn:uuid:58248785-5781-4f58-8c3a-4aab7be7f11f> | 3.46875 | 301 | Content Listing | Science & Tech. | 61.42087 |
by: Bruce Stutz
Summary: Veronique Carola
Today we are shifting from the ideology of mitigating carbon dioxide emissions to mostly making adaptation to climate changes a main priority for affected communities. With the rate of continuing C0² emission around the world, expectations that we could keep atmospheric C0² lev... | <urn:uuid:693aaf8b-0771-4dc9-9d85-e4a4b2c8cd46> | 3.625 | 306 | Personal Blog | Science & Tech. | 21.646522 |
Climate Change Information Sheet 3
Greenhouse gases and aerosols
- Greenhouse gases (GHGs) control energy flows in the atmosphere by absorbing infrared radiation. These trace gases comprise less than 1% of the atmosphere. Their levels are determined by a balance between "sources" and "sinks". Sources are processes that... | <urn:uuid:f73a9af5-9bf7-4bec-8565-1c4e13e8c02b> | 4.125 | 1,103 | Knowledge Article | Science & Tech. | 28.936207 |
Further Quick Divisibility Tests
Test for multiples of 5
- If the last digit is either 5 or 0, then the whole number is a multiple of 5.
Here is an interactive panel for you to practice on:
Test for multiples of 10
- This is easy - if the last digit is 0, the whole number is a multiple of 10, otherwise it is not!
For e... | <urn:uuid:922b8480-66b0-4e08-827e-ba099cae42ec> | 3.546875 | 804 | Tutorial | Science & Tech. | 83.60087 |
In 1875, Tesla began studying electrical engineering at the Polytechnic Institute in Graz, Austria. Again, with obsessive effort that permitted only study, he excelled. In Graz, Tesla was able to observe the new Gramme machine which generated direct current electricity using electromagnets and could also be reversed to... | <urn:uuid:239de55b-35f2-4564-8d11-7812d0f209c5> | 3.296875 | 207 | Knowledge Article | Science & Tech. | 33.889837 |
Volcanoes erupt because the earth's movement causes openings or vents in the crust. Volcanoes can be mountains, vents or under sea rifts. Volcanism is an eruption of molten rock at the earth's surface. Sometimes there is explosive gases and rock fragments. Magma is soft rock in the earth's mantle. It usually flows into... | <urn:uuid:44646610-d1f8-44e4-92ee-4b383a866a74> | 4.28125 | 433 | Knowledge Article | Science & Tech. | 60.97619 |
With the establishment of the human genome project, biology moved into the uncharted territory of 'big science'. Not only would funding require levels previously familiar only to physical science - upwards of $3 billion - but also novel ways of doing science would at some point in the venture become necessary. Behind t... | <urn:uuid:3feeeae1-4cfe-4c25-b758-fa1b2d00350a> | 3.125 | 206 | Truncated | Science & Tech. | 41.057447 |
Totally Liquid Planet
Name: Josh A.
Is it possible to have a 100% liquid planet?
Yes it is possible in principle, but the details depend on both the material and on
the mass of the planet. If the liquid was iron or nickel and if it is hot enough
then it is possible for a planet to be completely liquid from the surface ... | <urn:uuid:ff1a214f-0e49-4622-a900-ac28c30bfacd> | 3.046875 | 321 | Q&A Forum | Science & Tech. | 49.372308 |
Name: Briony C
I have heard that the Portuguese man-of-war is actually a
colony of individual polyps which perform different tasks (e.g.
digestion, reproduction) and are dependent on each other for survival.
What is it about the polyps that means they are classified as separate
creatures within a colony rather than jus... | <urn:uuid:63063d3a-6393-4529-9246-636f5a5e37c7> | 2.6875 | 146 | Nonfiction Writing | Science & Tech. | 35.680355 |
The Big Sleep
By Sue Olcott
During this time of year we become more aware of the difficulties wild animals must overcome to survive in West Virginia. Trees are dropping their leaves. Days are quiet since most song birds have migrated south to find food and escape the coming cold. Deer are increasing the thickness and l... | <urn:uuid:e9932359-bde5-445f-bea5-e794c3e7887d> | 4.15625 | 1,314 | Nonfiction Writing | Science & Tech. | 39.909896 |
A googolplex is the number 10googol, i.e. 1010100. In pure mathematics, the magnitude of a googolplex could be related to other forms of large-number notation such as tetration, Knuth's up-arrow notation, Steinhaus–Moser notation, or Conway chained arrow notation. The reciprocal of the googolplex is called googolminex.... | <urn:uuid:b4e24f15-e275-4de9-a7a5-56acb2aa8069> | 3.359375 | 1,334 | Knowledge Article | Science & Tech. | 56.428269 |
Brief SummaryRead full entry
Species AbstractThe Black dolphin (scientific name: Cephalorhynchus eutropia), is more commonly known as the Chilean dolphin, is only found in freshwater estuaries, and coastal areas surrounding Chile. It is a marine mammal, a member of the family Delphinidae, part of the order of cetaceans... | <urn:uuid:befe6244-a08e-4237-a3f6-0e336c6ac9af> | 3.84375 | 325 | Knowledge Article | Science & Tech. | 44.731768 |
Accurate tectonic reconstructions provide an essential framework for evaluating and modelling long-term palaeoenvironmental data. Reconstructions of large parts of the Pacific Ocean for mid-Cenozoic and earlier times are particularly difficult to constrain because it is almost encircled by subduction zones. However, in... | <urn:uuid:75c8016d-6541-4f8a-a962-4ba7d44e13f8> | 3.03125 | 620 | Academic Writing | Science & Tech. | 39.01171 |
Debugging the compiler
When compiling GHC:
- add -DDEBUG to your GhcStage1HcOpts and/or GhcStage2HcOpts in mk/build.mk. This enables assertions and extra debug code.
When compiling the program (see also the relevant User Manual section):
- Use -v3 or -v4 to get an idea about what GHC is doing when the problem occurs.
-... | <urn:uuid:dd3f68f2-920c-484b-845a-a6539111238b> | 2.6875 | 285 | Documentation | Software Dev. | 61.626813 |
This investigation explores using different shapes as the hands of
the clock. What things occur as the the hands move.
How many different shaped boxes can you design for 36 sweets in one
layer? Can you arrange the sweets so that no sweets of the same
colour are next to each other in any direction?
What happens if you j... | <urn:uuid:308515fd-1c0f-4242-afb1-861b54e95d53> | 3.15625 | 696 | Personal Blog | Science & Tech. | 65.943071 |
It is pretty clear that the hedgehogs of the world understand what the hyenas don't, that given enough measurements the imperfections in individual weather stations average out and you are left with reliable trends, at least if you understand what area averaging is and how to correct for things like the time of day tha... | <urn:uuid:33817600-f95e-40db-9229-531a537da949> | 2.90625 | 569 | Personal Blog | Science & Tech. | 25.076192 |
Simply begin typing or use the editing tools above to add to this article.
Once you are finished and click submit, your modifications will be sent to our editors for review.
...while erosion stripped away the overlying rocks. The researchers used a new geochemical technique to analyze and date the mineral apatite that ... | <urn:uuid:d97fb117-3c07-40e0-b492-08841f4e142b> | 3.765625 | 143 | Truncated | Science & Tech. | 46.777 |
heart urchinArticle Free Pass
heart urchin, any echinoid marine invertebrate of the order Spatangoidea (phylum Echinodermata), in which the body is usually oval or heart-shaped. The test (internal skeleton) is rather fragile with four porous spaces, or petaloids. The body is covered with fine, usually short spines.
Hea... | <urn:uuid:d79c6a23-d3ff-410d-a341-d2220c0b496f> | 3.34375 | 161 | Knowledge Article | Science & Tech. | 44.959547 |
Chemistry in History
Explore the story of chemistry across centuries.
Science is a human pursuit. Meet the people behind some of chemistry’s most important milestones.
Chemistry has made innumerable contributions to our understanding of the world. Explore some of the areas in which chemists work.
Engage your hands and ... | <urn:uuid:9c0a078c-7f96-44d0-84b8-3e1b887e3f02> | 2.84375 | 78 | Content Listing | Science & Tech. | 39.885082 |
A quantum dot is a semiconductor whose excitons are confined in all three spatial dimensions. As a result, they have properties that are between those of bulk semiconductors and those of discrete molecules. They were discovered by Louis E. Brus, who was then at Bell Labs. The term "Quantum Dot" was coined by Mark Reed.... | <urn:uuid:4eafc774-10ad-4d9e-ac82-609782c264e7> | 3.9375 | 294 | Knowledge Article | Science & Tech. | 35.533102 |
Science Main Index
Of the million or more animal species in the world, more than 98% are
invertebrates. Invertebrates don't have an internal skeleton made of bone.
Many invertebrates have a fluid-filled, hydrostatic skeleton, like the
jelly fish or worm. Others have a hard outer shell, like insects and crustaceans.
The... | <urn:uuid:1ff2cbde-178e-4c95-9b19-6e5cf53eea3c> | 3.34375 | 149 | Knowledge Article | Science & Tech. | 28.244249 |