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Part I: Producing X-rays from adhesive tape
A Collaboration with Johnny Lu
Building our X-Ray source:
While we could have purchased a standard X-Ray tube as an X-Ray source… it seemed kind of scary and we decided it might be more fun to attempt our own X-Ray source using scotch tape in a vacuum. Inspired by research do... | <urn:uuid:2155e050-bdd5-48f2-852a-cecede6dfd75> | 3.140625 | 1,142 | Personal Blog | Science & Tech. | 49.994265 |
There are many errors that can occur when numbers are written, printed or transferred in any manner. Luckily, there are schemes in place to detect, and in some cases even correct, such errors almost immediately. Emily Dixon takes a break and discovers that codes are not just for sleuths.
'Of the myriad strategems I emp... | <urn:uuid:4400a01f-dde5-414d-ae2f-4a02519827df> | 2.796875 | 407 | Content Listing | Science & Tech. | 41.661664 |
ESA offers a new way of looking at the Sun 14 December 2010 ESA has released interactive, open-source software that gives both scientists and the public an unprecedented insight into the ever-changing face of the Sun. Read more
SOHO (SOlar Heliospheric Observatory) is a space-based observatory, viewing and investigatin... | <urn:uuid:35e6dda1-a029-4313-a22d-4458daafffa4> | 2.71875 | 230 | Content Listing | Science & Tech. | 33.916403 |
Scott Baker, associate director of the Marine Mammal Institute at Oregon State University, writes from Samoa, where he studies the formation of local communities among dolphins and their genetic isolation from one another.
Wednesday, Aug. 15
I often think that finding a needle in a haystack would be relatively comforta... | <urn:uuid:fe361880-45c1-4ae8-bac8-9e8e3e735816> | 3 | 821 | Personal Blog | Science & Tech. | 53.546895 |
Like people, planets grow old. They start out full of energy, but over billions of years, they change. Instead of losing their hair, planets can lose their atmospheres and oceans. Instead of wrinkles, they may gather craters. And rather than becoming frail, planets cool and shrink, becoming more dense as they move into... | <urn:uuid:31205bfa-902e-4eac-8e20-09576587c5cd> | 4.0625 | 289 | Knowledge Article | Science & Tech. | 43.542266 |
Phytoplankton around the Falkland Islands
Shades of iridescent blue dominated the Atlantic Ocean east of the Falkland Islands in mid-December 2011. The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this natural-color image on December 14, 2011. Bright swirls form a giant arc h... | <urn:uuid:5e297b32-3c96-41c1-9fae-82257e62d18b> | 3.765625 | 182 | Knowledge Article | Science & Tech. | 32.336178 |
|Exponential-and-logarithmic-functions/429148: Carbon dioxide is a greenhouse|
gas in the atmosphere that may raise average temperatures
on Earth. The burning of fossil fuels could be
responsible for the increased levels of carbon dioxide. If
current trends continue, future concentrations of atmospheric
carbon dioxide ... | <urn:uuid:612cfbbb-669b-4352-82b2-6c93c3fe6f13> | 3.34375 | 249 | Q&A Forum | Science & Tech. | 71.664839 |
25 08 11 - 20:34From the debunking of modern religions department:
New genetic evidence reveals that most British men are not descended from immigrant farmers who migrated east 5,000-10,000 years ago -- contrary to previous research.
More than 100 million European men have a set of genes called R-M269, including about ... | <urn:uuid:e5a15573-47d1-4268-8264-f90b929563f0> | 3.109375 | 234 | Personal Blog | Science & Tech. | 50.448019 |
Before the creation of the HTML Table model, the only method
available for relative alignment of text or objects was through
the use of the PRE element. While this was
useful in some situations, the effects of PRE are very limited,
and some other solution was definitely necessary to resolve this need.
Current desktop p... | <urn:uuid:d5ce2891-7120-468a-ba55-a3659d4c2ecc> | 3.90625 | 1,664 | Documentation | Software Dev. | 43.204548 |
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.
liquid crystal structure
...aligned, but allow rotation of molecules about their directors. These are the so-called plastic crystals. Many interes... | <urn:uuid:6e7e7e91-2b50-4e32-9a6e-41488bca371e> | 2.6875 | 134 | Knowledge Article | Science & Tech. | 42.527967 |
by Brian Hawkins
Jan 20, 2005
In this section we go over the general concept of rules and
dependencies. If you are familiar with GNU make then you may want
to skip this section as the concepts are the same. Those of you
from the Ant world may want to take a look as it is different from
Ant's way of looking at things
Wh... | <urn:uuid:300af8c4-c511-4103-b7bf-1594d316e4d9> | 3.921875 | 3,719 | Documentation | Software Dev. | 61.190606 |
Problem 23: A gene is a discrete sequence of DNA nucleotides.
Determine the sequence of DNA.
Your sister is a molecular biology graduate student. She invited you to visit her lab.
Before she could give you a tour, her supervisor called a quick lab meeting. You're now sitting at her desk waiting for her to come back.
Yo... | <urn:uuid:d1b5c11b-bcb1-4355-914e-c1bbf6c604da> | 4.125 | 1,155 | Tutorial | Science & Tech. | 72.829897 |
One graph that is often put forward to illustrate the link between global temperature is the Archer 2006 book graph (shown below). It looks as if there is a simple linear relationship between temperature and sea level with 20m/degC! From that you would guess that we would be facing maybe 50m of sea level rise. However,... | <urn:uuid:a81f596c-2967-4c86-888b-f429b41441b9> | 3.25 | 514 | Personal Blog | Science & Tech. | 53.534444 |
ELorenz wrote:When speaking about mathematics you have to be very careful about how you say things.
ELorez wrote:However it is not true that x^2 = 1/2*k*x^2.
ELorenz wrote:What does f(x) = x^2 describe in nature
ELorenz wrote:it states that vectors actually first appeared in geometry
The idea of a vector is one of the ... | <urn:uuid:69cab969-cd5e-4bc2-b505-9e82e0ecb309> | 2.953125 | 354 | Comment Section | Science & Tech. | 46.953716 |
Work/Energy problem with Friction A conservation of energy problem where all of the energy is not conserved.
Work/Energy problem with Friction
⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles.
- Welcome... | <urn:uuid:7355d420-d599-4fcd-941d-e597aebe7982> | 3.421875 | 2,631 | Truncated | Science & Tech. | 76.400194 |
Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text o... | <urn:uuid:b36807a5-165f-4527-8228-0a8202106d8b> | 2.78125 | 1,417 | Content Listing | Science & Tech. | 36.48686 |
In this example we are going to show the use of java.util.Vector class. We will be creating an object of Vector class and performs various operation like adding, removing etc. Vector class extends AbstractList and implements List, RandomAccess, Cloneable, Serializable. The size of a vector increase and decrease accordi... | <urn:uuid:bc976b42-3d52-4225-901f-ece1f5fb55c7> | 4 | 421 | Documentation | Software Dev. | 44.048811 |
Nov. 13, 2007
Scientists are converging on Ethiopia this week to discuss a new and strange form of Space Weatherover Africa.
Aug. 15, 2007
Astronomers have discovered something they've never seen before: a star with a tail like a comet.
Dec. 3, 2007
Mark your calendar: The best meteor shower of 2007 peaks on Friday, De... | <urn:uuid:70621dbb-550b-4609-86c8-43a72e703d15> | 3.09375 | 442 | Content Listing | Science & Tech. | 63.523757 |
Ever wanted to explore the ocean? Calm down, don't get out of your armchair, yet, Midwest. Thanks to Google Earth and researchers at Columbia University, you can take a sea cruise without leaving your pop or your Twitter account behind.
Why should you care about the oceans? Did you know that we have already consumed 90... | <urn:uuid:04de88eb-7d4f-492c-8217-69ce36b5a778> | 3 | 2,597 | Content Listing | Science & Tech. | 55.079804 |
Tephritidae Main | Diptera Home | SEL Home
Fruit Fly (Diptera: Tephritidae) Behavior
This section is mainly copied from Norrbom et al. (1999). More recent and more detailed reviews and analyses of most aspects of fruit fly behavior were published in Aluja & Norrbom (1999). Also see Biology, Host Plants, and Parasites &... | <urn:uuid:11c6dd04-3f09-4af4-ab68-5dbd456e668a> | 3.703125 | 2,223 | Knowledge Article | Science & Tech. | 38.216332 |
By Blane Perun
Rate: (24 Ratings)
The seahorse is a type of fish that belongs to the Hippocampus genus. In addition, the seahorse belongs to the family Syngathidae, which is a family that includes the pipefish, the leafy sea dragons, in addition to the seahorse. While many believe that there is just one type of seahors... | <urn:uuid:be1930b7-425a-42f1-9083-3110aba67ccf> | 3.15625 | 785 | Knowledge Article | Science & Tech. | 43.868223 |
Each year our planet is rocked by more than 50,000 earthquakes, of which approximately 99% are earthquakes too small to pose a real danger. In contrast, the remaining 1% consists of demonstrations that can be a source of serious harm if they occur in populated places. Did you know that many of the worst earthquakes in ... | <urn:uuid:0645f0c1-8fd6-4785-8c7b-ae78fe19e01f> | 3.515625 | 1,143 | Knowledge Article | Science & Tech. | 56.999512 |
Venus receives more sunlight than Earth. The atmosphere is thicker and denser. A day on Venus can last many months. So it should be ideal for a solar powered aircraft.
Such an aircraft could stay high above the clouds powered by ample solar energy. Due to Venus's very slow period of rotation the aircraft could always r... | <urn:uuid:b73ec220-a976-4b91-b082-1ae606c0139c> | 3.203125 | 134 | Comment Section | Science & Tech. | 56.255385 |
Gustav Robert Kirchhoff's contribution to our understanding of how light and matter
interact is his set of three laws of radiation. They predict what sort of spectrum
an object will emit based upon the physical properties of the object.
Kirchhoff devised these laws in the latter half of the nineteenth century,
prior to... | <urn:uuid:86cbcb2a-5cb4-4bbf-8cf3-74295e755431> | 3.734375 | 813 | Knowledge Article | Science & Tech. | 37.836302 |
Module 4: Studying Mass Extinctions
- Students will research the causes of mass extinctions including, but not limited to:
- Climate change (global warming/glaciation)
- Tectonic activity
- Changes in Sea level/chemistry
- Changes in atmospheric chemistry
- Bolide impact (iridium anomalies as evidence along with crater... | <urn:uuid:79a3abac-a21d-4730-b422-ede865e8c0f2> | 3.78125 | 305 | Tutorial | Science & Tech. | 27.421673 |
Von Kármán vortices, which can appear as long linear chains of spiral eddies, form nearly anywhere that fluid flow is disturbed by an object. The atmosphere behaves like a fluid, so the wing of an airplane, a bridge, and even an island can cause the vortices to form. Von Karman vortices are named after aeronautical eng... | <urn:uuid:0df9bf6e-6426-4076-a876-1c5fb2406900> | 3.78125 | 686 | Knowledge Article | Science & Tech. | 48.052128 |
The Heat is On For California Wines
Topics: Biology, Climate, Environment, News, Radio
- Copy and Paste to Embed
They're wine grapes that are well-adapted to hotter climates – the kind of conditions that California may be facing as the climate continues to warm. But for wineries that have staked their reputations on ce... | <urn:uuid:815e40d5-ed6f-4091-a9d2-499aa7c173e9> | 3.234375 | 1,185 | Truncated | Science & Tech. | 50.117257 |
Contrary to previous predictions and measurements, rain patterns have got more uniform as the world has warmed over the past 70 years. So say Michael Roderick and his teammates from Australian National University, Canberra, who’ve developed an ‘accounting system’ that looks closely at where and when rain fell. And the ... | <urn:uuid:3cce7e3b-3914-4b99-8b59-721d91909ddf> | 3.3125 | 1,120 | Academic Writing | Science & Tech. | 36.760843 |
What is a smart pointer and when should I use one?
A smart pointer is a class that wraps a "bare" C++ pointer, to manage the lifetime of the object being pointed to.
With "bare" C++ pointers, the programmer has to explicitly destroy the object when it is no longer useful.
A smart pointer by comparison defines a policy ... | <urn:uuid:3466f7b0-207a-40e3-a58f-3f4f7c27d3fb> | 3.21875 | 898 | Q&A Forum | Software Dev. | 48.238085 |
Cats & Other Carnivores
by Dr. Carlos López González
Aileen from the Murray Language Academy asks: 'Is
it hard finding the wild cats even with the traps and
advances in technology?' The answer is definitely 'yes.'
These cats are very shy and elusive animals.
The box traps, camera photos, and tracks left in scent
statio... | <urn:uuid:b962e2b8-f3e2-401d-8d0d-9e536f9515db> | 3.390625 | 553 | Knowledge Article | Science & Tech. | 50.195594 |
Computing (FOLDOC) dictionary
Jump to user comments
PARALlel reLATION. Sabot, MIT 1987. A framework for parallel
programming. A "field" is an array of objects, placed at
different sites. A paralation is a group of fields, defining
nearness between field elements. Operations can be performed
in parallel on every site of... | <urn:uuid:d6bab878-2425-4387-88bd-e99d6b544154> | 2.734375 | 116 | Structured Data | Software Dev. | 37.581043 |
Errors in Measurement Lecture Demonstrations
Re-do calculation of density of bowling ball done earlier paying more attention to accurate measurement of diameter, and correct precision of measurements and calculated results.
Measure diameter precisely with large caliper (or bar on ring stand lowered to top of ball).
Car... | <urn:uuid:ae3c063b-14a3-46ac-a66d-3d8ff274dbac> | 2.90625 | 96 | Tutorial | Science & Tech. | 57.422176 |
Science Fair Project Encyclopedia
Spontaneous symmetry breaking
Spontaneous symmetry breaking in physics takes place when a system that is symmetric with respect to some Lie group goes into a vacuum state that is not symmetric. At this point the system no longer appears to behave in a symmetric manner. It is a phenomen... | <urn:uuid:2745fba0-b298-4139-b9ec-c884d8e8cd33> | 4 | 1,011 | Knowledge Article | Science & Tech. | 31.59142 |
Biofuels: Their Negatives with Respect to Nitrogen
Erisman, J.W., van Grinsven, H., Leip, A., Mosier, A. and Bleeker, A. 2010. Nitrogen and biofuels: an overview of the current state of knowledge. Nutrient Cycling in Agroecosystems 86: 211-223.
To bring us up to date on this important subject, Erisman et al. provide "a... | <urn:uuid:874f9bdc-5a4a-4a4a-8cf1-e27a7813dd50> | 2.984375 | 453 | Academic Writing | Science & Tech. | 29.030531 |
Temperature Record of the Week
This issue's Temperature Record of the week is from Anderson, South Carolina. Visit our U.S. Climate Data section to plot and view these data for yourself.
Where Have All the Flowers Gone?: Nowhere … yet. But a new study has been construed to suggest that "one in every five species of wil... | <urn:uuid:a66d5798-2504-4373-91d0-7220238be238> | 2.796875 | 391 | Content Listing | Science & Tech. | 42.686558 |
A series of "Powers of Ten" is sequentially displayed, beginning with a square covering 1023 m on a side and progressing through 10-16 m on a side. The scale and description of what is being seen is given on each image.
9-12: 4A/H3. Increasingly sophisticated technology is used to learn about the universe. Visual, radi... | <urn:uuid:eed3bec9-d175-4a61-9c5a-17dd4f68c64f> | 3.734375 | 360 | Knowledge Article | Science & Tech. | 48.423222 |
When you need to work with numbers bit by bit, as when working with the mode bits returned by stat, you’ll need to use the bitwise operators. These operators perform binary math operations on values. The bitwise-and operator (&) reports which bits are set in the left argument and in the right argument. For example, the... | <urn:uuid:802d70e5-0d0c-4e09-b820-5e5c8d35ce6d> | 3.25 | 773 | Documentation | Software Dev. | 55.331979 |
Last week we talked about Daniel Bernoulli and his famous Bernoulli Principle, which is the cornerstone of fluid dynamics. As we’ll see in this week’s installment, the Bernoulli Principle doesn’t just apply to water flowing inside pipes. Let’s consider another instance in which it is instrumental, that of an airplane w... | <urn:uuid:d124956b-649f-4843-ae2c-c8f5a0f21326> | 4.3125 | 1,586 | Personal Blog | Science & Tech. | 58.39151 |
Editor’s note: This is the fourth in a series of articles called Working Conditions, about the unusual environments in which some University of Hawaiʻi faculty conduct their scholarly work.
The clock ticks quickly for the Institute for Astronomy’s Shadia Habbal. In all of 2008 she had just one minute and forty-nine sec... | <urn:uuid:6474ab3f-6c3d-4007-9d38-ac0f4f713b2b> | 3.453125 | 1,527 | Truncated | Science & Tech. | 55.531495 |
The Development of Telescope Optics in the Middle of the Seventeenth Century
Author: Willach R.
Source: Annals of Science, Volume 58, Number 4, 1 October 2001 , pp. 381-398(18)
Publisher: Taylor and Francis Ltd
Abstract:The author performed optical tests on four telescopes dating from the first half of the seventeenth ... | <urn:uuid:827563d8-4f86-4479-b5b7-89e8c23c2444> | 2.765625 | 219 | Academic Writing | Science & Tech. | 27.763915 |
Introduction to Harmonic Motion Intuition behind the motion of a mass on a spring (some calculus near the end).
Introduction to Harmonic Motion
⇐ Use this menu to view and help create subtitles for this video in many different languages. You'll probably want to hide YouTube's captions if using these subtitles.
- Let's ... | <urn:uuid:b088208d-d724-43c9-81a8-a62156174f40> | 3.921875 | 2,919 | Truncated | Science & Tech. | 77.71642 |
Topic: Java and XML
Java Serialization to XML (JSX) aims to to provide a simple and lightweight mechanism for compact serialization of object data that uses only a single method invocation to take in an object and write out its contents as XML (and vice versa). Java objects are serialized as XML elements, and object fi... | <urn:uuid:f5f28c8e-fabc-4ff1-9410-7b548962d43e> | 2.796875 | 108 | Knowledge Article | Software Dev. | 41.66698 |
The Delmarva fox squirrel is a very, very large squirrel. It can tip the scales at as many as three pounds, which is about twice the size of its cousin, the Eastern gray squirrel. But it otherwise has all the typical squirrel traits -- a long tail, small, round ears, and an acorn-shaped head.
Unlike the prolific Easter... | <urn:uuid:6b24345e-edcb-4734-a05b-8d9fa2f8b932> | 3.53125 | 664 | Knowledge Article | Science & Tech. | 41.302488 |
Changing Planet: Adaptation of Species
As the Earth system warms due to rising levels of greenhouse gases in the atmosphere, the environments that some species live in are rapidly changing. If the environmental conditions change too quickly, the species may not be able to adapt to the change, and may become threatened ... | <urn:uuid:7ec4d66f-1b4c-4a12-b14d-d3514d1f583b> | 3.953125 | 522 | Tutorial | Science & Tech. | 53.486243 |
Lets say I have an array like this:
How would I trim off all the leading and trailing whitespaces?
char str = " Hello ";
I tried doing this with a cnt of all non ' ' then making a new array with the size of cnt. Then I noticed that I can't create an array with a variable. So how should I go about this?
Use a for loop t... | <urn:uuid:e7f5ea7f-1946-409a-b994-d06702e0420a> | 2.984375 | 186 | Q&A Forum | Software Dev. | 67.130671 |
Last Updated: 12:26 AM GMT on May 20, 2013
— Last Comment: 2:04 PM GMT on May 23, 2013
Celebrating Space Exploration
Posted by: GardenGrrl, 5:43 PM GMT on June 05, 2012
This is an amazing year for space exploration and star gazing. Watching the live feed of Spacex Dragon docking to the International Space Station put g... | <urn:uuid:46595d54-ae65-4fd2-ae75-88cd902a93c4> | 3.015625 | 265 | Comment Section | Science & Tech. | 68.490785 |
Energy is commonly defined as the capacity to do work or to transfer heat.
Work is energy used to cause an object with mass to move.
Heat is energy used to cause the temperature of an object to increase.
Kinetic energy is the energy of motion, represented by the equation:
Ek = 1/2 mv2
Atoms and molecules have mass and ... | <urn:uuid:65373635-ed30-40f9-a7fa-bf27c52cd532> | 3.71875 | 160 | Knowledge Article | Science & Tech. | 38.746923 |
The two images below show variations in primary productivity based on
satellite measurements of chlorophyll pigment. Red colors indicate high
values and purple colors indicate low values (see colorbar scale below).
Black areas are parts of the ocean where no data were collected. Two factors
affect the amount of primary... | <urn:uuid:34318b7b-3f55-4783-b368-afd23dc7522f> | 3.65625 | 241 | Tutorial | Science & Tech. | 33.884954 |
Houghton, R.A. 1993. The flux of carbon from changes in land
use. pp. 39-42. In I.G. Enting and K.R. Lassey (eds.). Projections of
Future CO2. Technical paper 27, CSIRO Division of Atmospheric
Research, Mordialloc, Australia.
Houghton, R.A. 1999. The annual net flux of carbon to the atmosphere
from changes in land use ... | <urn:uuid:5ad8c618-b958-484e-a1f2-a9175bd41cf6> | 2.734375 | 574 | Content Listing | Science & Tech. | 97.579742 |
They are small, scorching hot, and reside in a pretty odd solar system.
Earlier today, NASA announced the discovery of two Earth-sized planets – a first for the Kepler mission. The planets are part of the Kepler 20 system, which also includes three larger planets.
The newly discovered planets – dubbed Kepler-20e and Ke... | <urn:uuid:91683d59-3ac3-4f6e-a7e0-bd6630a7f912> | 3.71875 | 626 | Personal Blog | Science & Tech. | 49.812233 |
Apr 20, 2000, 6:11 AM
Post #2 of 3
I just read up on it and from what I undrstand umask is just short for the Unix Permission Mask, and the Unix Permission Mask is simply the permission. But to set a permission when using the mkdir you have to use permissions that are only similar to the ones that we really use like, 7... | <urn:uuid:71126a25-b832-4363-b7cc-966e53cafc25> | 2.78125 | 199 | Comment Section | Software Dev. | 98.311725 |
This view of Titan's south polar region reveals an intriguing dark feature that may be the site of a past or present lake of liquid hydrocarbons.
The true nature of this feature, seen here at left of center, is not yet known, but the shore-like smoothness of its perimeter and its presence in an area where frequent conv... | <urn:uuid:8b5cf19a-5476-4ac9-9a4e-eb7eb6867a45> | 3.515625 | 539 | Knowledge Article | Science & Tech. | 37.058129 |
Science Fair Project Encyclopedia
Fundamental theorem of arithmetic
In mathematics, and in particular number theory, the fundamental theorem of arithmetic or unique factorization theorem is the statement that every positive integer greater than 1 can be written as a product of prime numbers in only one way. For instanc... | <urn:uuid:bb3c215a-addd-4e9c-be0d-ccece1d291a1> | 4.5 | 1,240 | Knowledge Article | Science & Tech. | 72.151772 |
Physicist: In terms of things like space travel, the difference between 100mph and light speed is academic. Everything out there is really far apart. The speed of light, “C”, is woven into the laws of the universe from top to bottom, mostly in the context of electro-magnetism. Changing the speed of light would have pro... | <urn:uuid:f0ba03cb-133f-4826-88f1-d76591c6f697> | 3.421875 | 758 | Q&A Forum | Science & Tech. | 68.406352 |
Advocacy for Animals
School & Library Products
Toys & Games
Types of insect wing venation.
Credit: From (top left) J. Comstock,
The Wings of Insects
, Comstock Publishing Co.; (top right)
An Introduction to the Study of Insects
, 3rd ed. by Donald J. Borror and Dwight M. DeLong, copyright © 1964, 1971 by Holt, Rinehart... | <urn:uuid:9db19a4f-fdb7-4482-95d8-2cedd9fc6a68> | 2.8125 | 204 | Truncated | Science & Tech. | 61.384107 |
By: Tom Muck on Thursday, April 23, 2009
In the last article in this series I talked about calculations on a web page. There are two ways that this can be done—in your scripting language on the web page (PHP, ColdFusion, C#, or other languages) or in the SQL statement that retrieves the results from the database. For d... | <urn:uuid:e70cf587-7bd1-4f0e-80e0-d9ecd55ca8d9> | 2.859375 | 290 | Truncated | Software Dev. | 48.581643 |
he Java 2 Platform, Micro Edition (J2ME) is targeted at cell phones, smart cards, pagers, and other consumer devices. J2ME technology consists of a virtual machine and a set of APIs suitable for tailored runtime environments for these devices. PHP, on the other hand, is a widely used server-based language to build Web ... | <urn:uuid:e1b0199f-192d-496b-a854-bbb7fdf753ee> | 3.140625 | 962 | Truncated | Software Dev. | 56.746395 |
Photography with cameras
Nikon D3x, Nikon D300, Canon 50D
Image editing with Photoshop
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|Sheep bot fly|
|The sheep bot fly (Oestrus ovis) belongs to the genus Oestrus in the order Diptera and is the most common member of the subfamily Oestrinae, in the family of b... | <urn:uuid:ac04a7c1-97aa-4dae-96b3-112bb0d63626> | 2.8125 | 2,088 | Structured Data | Science & Tech. | 60.019976 |
Functions and Graphs
By M Bourne
In the real world, it's very common that one quantity depends on another quantity.
For example, if you work in a fast food outlet, your pay packet depends on the number of hours you work. Or, the amount of concrete you need to order when constructing a building will depend on the height... | <urn:uuid:c0da4b66-41db-4c41-83a8-73feab0002d7> | 4.25 | 554 | Truncated | Science & Tech. | 59.6707 |
Last week, we started working with a fundamental aspect of database structure -- database keys. This week, we'll take a look at how keys are used to construct relationships between different tables in a database. This is the core function of relational databases. You may have a rocky relationship with your database, bu... | <urn:uuid:773b0562-8049-4d43-917a-e2ad061d82c9> | 3.453125 | 874 | Documentation | Software Dev. | 43.816558 |
Limits of Sequences, Lim
We already know what are arithmetic and geometric progression -
a sequences of values. Let us take the sequence an = 1/n, if k
and m are
natural numbers then for every k < m is true ak > am, so as
big as it gets n as smaller is becoming an
and it's always positive, but it never reaches null. In... | <urn:uuid:5746a7fb-537d-4f90-a824-f650f5a4a907> | 3.640625 | 725 | Knowledge Article | Science & Tech. | 99.420957 |
They say that in the 1970s, climate scientists claimed that we were headed for a mini ice-age. They then point out that this never happened, and so question the strength of current predictions that the globe will be between 2 and 5 °C warmer by 2100.
Fair enough. But was there ever a consensus over global cooling in th... | <urn:uuid:d8321eeb-0f64-4e8c-8fd1-138321bb3429> | 2.71875 | 452 | Nonfiction Writing | Science & Tech. | 49.095315 |
Global warming poses one of the world's most serious and potentially devastating environmental threats. But the changing climate doesn't just threaten the world, it threatens our world, right here in the Bay Area. Development has cost us much of our wetlands; climate change could claim more. It could flood our coastlin... | <urn:uuid:57bf98eb-08d1-4062-a41c-1271aace19f3> | 3.421875 | 435 | Knowledge Article | Science & Tech. | 37.003705 |
The following resources are intended to assist in learing basic physics principles. Additional resources for physics students are available at The Physics Classroom Tutorial and the Multimedia Physics Studios.
A multitude of problems (37) involving the analysis and interpretation of position-time and velocity-time grap... | <urn:uuid:f19eb735-93c9-4ab2-a2e2-f57f2c86e5dc> | 4.09375 | 177 | Content Listing | Science & Tech. | 30.044081 |
An iframe is used to display a web page within a web page.
Syntax for adding an iframe:
The URL points to the location of the separate page.
The height and width attributes are used to specify the height and width of the iframe.
The attribute values are specified in pixels by default, but they can also be in percent (l... | <urn:uuid:3e19d67c-7120-41b8-900f-741d9fe49e48> | 2.90625 | 168 | Documentation | Software Dev. | 48.6124 |
Humans for eons assumed that whales and dolphins chirped, clicked, or sang to communicate with each other until they discovered, quite recently, that there were other means being used. As anyone underwater when a stone strikes an object will attest, sound traveling underwater is magnified beyond the affect above the su... | <urn:uuid:a8c17875-ec99-4ace-af79-bcde7ade5a3e> | 3.578125 | 548 | Nonfiction Writing | Science & Tech. | 40.815072 |
Some 40 million people depend on the Colorado River Basin for water but warmer weather from rising greenhouse gas levels and a growing population may signal water shortages ahead.
The Earth Institute provides executive training in environmental sustainability through science, policy, and economics; we invite you to lea... | <urn:uuid:4fd7c64b-bfa6-48c1-bc5b-c8bd6705042a> | 3.140625 | 574 | Content Listing | Science & Tech. | 21.599356 |
Specifying the stroke and fill properties
Use the Stroke tab on the Inspector to define the stroke properties for vector shape and text objects. The stroke refers to the outline of an object; the fill refers to the interior of an object.
You can choose to define a color for the stroke, or display no outline for an obje... | <urn:uuid:4a389703-68cc-495d-85c8-3aaaf89a2ec5> | 3.1875 | 134 | Documentation | Software Dev. | 48.642701 |
ANSI Common Lisp 12 Numbers 12.2 Dictionary of Numbers
- Arguments and Values:
integer-1 - an integer.
integer-2 - an integer.
generalized-boolean - a generalized boolean.
Returns true if any of the bits designated by the 1's
in integer-1 is 1 in integer-2;
otherwise it is false.
integer-1 and integer-2 are treated as ... | <urn:uuid:23377d79-aa5f-45af-9acb-1b7ea3f92a99> | 3.21875 | 227 | Documentation | Software Dev. | 59.311825 |
From CNN.com today:
Oil from the Deepwater Horizon spill may have settled to the bottom of the Gulf of Mexico further east than previously suspected and at levels toxic to marine life, researchers reported Monday.
Initial findings from a new survey of the Gulf conclude that dispersants may have sent the oil to the ocea... | <urn:uuid:23085d64-f92e-48a7-b489-93486e9f9f00> | 2.75 | 1,510 | Personal Blog | Science & Tech. | 49.626683 |
To deduce this, You have to specify the kind of decay and the nature of the "compund"
is it a crystal, a small molecule in gas phase, a organic material?
Beta decay shifts the nucleus one position upward in PSE,
thus any "compound" will be transformed into a cation by
loss of an electron, and whre say a iodide Ion had ... | <urn:uuid:93a365c2-ce82-44d8-abe9-03c6a52f63ac> | 3.296875 | 319 | Q&A Forum | Science & Tech. | 45.01332 |
MORE SNAKES AROUND US THAN WE THINK?
I write about snakes each spring when they emerge from hibernation. This year, I asked J. D. Willson, a University of Georgia doctoral student who studies snake ecology at the Savannah River Ecology Laboratory, to provide his perspective. Here is his response.
"A warm spring day is ... | <urn:uuid:8527ed13-f037-4f40-a8f4-5db44c763524> | 3.171875 | 814 | Personal Blog | Science & Tech. | 54.452311 |
We all love the blame game, so I think I found what to blame the heat wave on, the North Atlantic Oscillation (NAO). (See below for explanation of the NAO.) During the month of June, we saw the lowest recorded NAO value since 1950. I have to credit Ralph, a blog reader, for picking that out. Some studies have suggested... | <urn:uuid:f5f932a7-9f0e-46c0-ac4f-8b13ae057a51> | 3.03125 | 1,132 | Personal Blog | Science & Tech. | 42.344928 |
|But wait! We don't need to store the date and time information AND the corresponding timestamp in the database. All we really need to store is the act_timestamp_1 and act_timestamp_2 because these timestamps contain the indiviual date and time information. So that reduces the table fields to just these six.|
Now that ... | <urn:uuid:29a0c4a0-5ad1-4529-ad70-8dd8f98b851d> | 3.15625 | 377 | Tutorial | Software Dev. | 66.40829 |
Image 1. - Three column layout
This control allows you to simply and automatically divide your HTML content into multiple columns and present articles in better readable multi-column layout. If you look at the web pages of random newspapers, you'll notice that the width of article text is about 400px. This is because w... | <urn:uuid:74a5b35a-1e8b-4a08-93b2-aa909f642d39> | 2.984375 | 1,890 | Documentation | Software Dev. | 56.867484 |
Brian Tarbox is a Principal Staff Engineer in Motorola's Home and Network Mobility group.
Stored Procedures are programs that execute within a database server. They are usually written in a database language such as PL/SQL or ANSI SQL:2003 SQL/PSM. (Granted, some database servers do support Java stored procedures, but ... | <urn:uuid:81ca090c-c06c-463c-97d5-fc6cf3c7a833> | 3.21875 | 1,179 | Personal Blog | Software Dev. | 43.924279 |
I’ll bet when you think of all the studies being done on CO2 and Global Warming, you probably figure a lot of it has to do with the atmosphere or the ocean or plants of some kind—since that’s what it seems to affect the most. However, scientists have recently developed a method for finding and tracking CO2 underground.... | <urn:uuid:1d9f3f4f-86b7-4e4f-afd4-b5208b70c7f2> | 3.234375 | 198 | Content Listing | Science & Tech. | 49.484 |
There was a thread on Haskell-Cafe about how to pronounce Haskell.
Below are some notes for beginners on how to pronounce those strange Haskell operators and 'read' Haskell programs.
This is meant to be a table with formal and informal ways of saying various operators and code snippets.
|has type (in definitions); at t... | <urn:uuid:1e279088-8106-46d7-b45b-029c5c8a9ce0> | 3.078125 | 392 | Tutorial | Software Dev. | 41.700729 |
2 A Short Tutorial
2.4 Viewing output There are many different ways to view output generated by the environment. In many tools, for example, output appears as soon as it is generated -- this happens, for instance, when you compile code in the built-in editor.
At other times, you can view output in a tool called the out... | <urn:uuid:199e70de-0921-449f-8d00-33387e0aa73a> | 3.046875 | 439 | Documentation | Software Dev. | 57.121431 |
by Tom Robertson, Minnesota Public Radio
Near GRAND RAPIDS, Minn. -- Normally, the sounds of birds and frogs are about all anyone will hear in the peat bogs of Itasca County. But lately the Marcell Experimental Forest has buzzed with the hum of bobcats as workers build a large network of boardwalks into the bog.
Scient... | <urn:uuid:a9a5f887-5a13-4031-aae8-281ce8952338> | 3.5 | 337 | Truncated | Science & Tech. | 49.821053 |
A germ layer is a collection of cells, formed during animal embryogenesis.
Germ layers are only really pronounced in the vertebrates.
However, all animals more complex than sponges (eumetazoans and agnotozoans) produce two or three primary tissue layers (sometimes called primary germ layers).
Animals with radial symmet... | <urn:uuid:6cd123d1-8a13-4048-bcce-c0aa4dc38e2a> | 3.859375 | 196 | Knowledge Article | Science & Tech. | 24.3625 |
The Milky Way galaxy is bigger, heavier, and faster-spinning than researchers once thought. In work presented this week at the meeting of the American Astronomical Society, scientists reported that our home galaxy is rotating about 100,000 miles per hour faster than previously understood. The revised rotation speed als... | <urn:uuid:c1fbeb1f-aa0c-48b5-bbe4-c4920768ba98> | 3.28125 | 156 | Truncated | Science & Tech. | 34.424045 |
At various times, roller coasters, or more specifically the trains of these, undergo acceleration, which is defined as the rate of change in velocity. The change may be in speed (magnitude) or direction, or in both. Roller coasters accelerate when they speed up and make the ride faster, slow down, or change direction. ... | <urn:uuid:80ee54be-30b5-45dc-8849-a8ddae2dd6fe> | 3.921875 | 427 | Truncated | Science & Tech. | 69.152219 |
22.214.171.124 Butterflies are well-documented, recognisable and popular with the public.
126.96.36.199 Data is available for 42 of the 50 regularly occurring butterfly species in the South West since 1990, from annual abundance data collected at 300 monitored sites.
188.8.131.52 The species can be divided into two cat... | <urn:uuid:50b95f91-d75b-47dd-88a1-723fc8760a98> | 3.203125 | 449 | Knowledge Article | Science & Tech. | 53.367327 |
Wind, bees, or other agents transfer plant pollen from flower anthers or cones to stigmas, thereby fertilizing plants for reproduction.
North American Pollinator Protection Campaign [ More info] An effort focused on encouraging the health of resident and migratory pollinating animals in North America. USGS participates... | <urn:uuid:ed8ead11-87e0-49cf-bbb9-8af2891fb4ac> | 3.390625 | 222 | Content Listing | Science & Tech. | 27.455884 |
Mercury's thin atmosphere contains hydrogen, helium, and oxygen. It also has smaller amounts of sodium, potassium, calcium, and magnesium. This picture shows sodium near Mercury. Red and green areas have the most sodium. Sunlight and the solar wind constantly "blow away" Mercury's atmosphere. Instruments on spacecraft ... | <urn:uuid:788353c4-0cdc-44ff-af35-68e01a2849d2> | 3.875 | 116 | Knowledge Article | Science & Tech. | 36.315749 |
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.
2004 November 10
Explanation: Why isn't this small galaxy simple? The above image and contemporary observations of small nearby galaxy Leo A were su... | <urn:uuid:745894d3-29ab-4ed2-9e86-fa3c9bdcd145> | 3.65625 | 241 | Knowledge Article | Science & Tech. | 41.065385 |
CID 1711 and CID 3083 in 60 Seconds
Narrator (April Hobart, CXC): Astronomers have recently completed a large survey of the sky using some of the powerful telescopes both on the ground and in space. This survey, known as the Cosmic Evolution Survey, or COSMOS, has revealed many results. The latest comes from a study of... | <urn:uuid:2cd69c2e-67c0-469b-bc3e-00e24f1e9bb0> | 3.21875 | 191 | Truncated | Science & Tech. | 48.322252 |
(Submitted October 16, 1997)
Can you please tell me in plain language what a Red Giant is?
I'll give you a short answer and a longer one. The short answer is that
towards the end of a star's life, the temperature near the core rises and
this causes the size of the star to expand. This is the fate of the Sun in
about 5 ... | <urn:uuid:8acb856d-0797-412f-b713-05c9da3aebd7> | 3.53125 | 226 | Q&A Forum | Science & Tech. | 63.924312 |
At school I've always learned that you can view Current and Voltage like this:
The current is the flow of charge per second and the Voltage is how badly the current 'wants' to flow.
But I'm having some trouble with this view. How can we have a Voltage without a current? There is nothing to 'flow', so how can it be ther... | <urn:uuid:788b4f5e-d506-481d-a1f4-bd1e91600e17> | 3.03125 | 172 | Q&A Forum | Science & Tech. | 71.927155 |
Because the wolves are rarely seen, one of the few ways biologists have to monitor (check on) their activities is to radio-track them.
Radio-tracking (also known as radio telemetry) has been used for many years to study wildlife. The collars used on wolves weigh a little over a pound. The main components (parts) are a ... | <urn:uuid:72f0e9dd-e43d-4758-af5a-844d70bbea45> | 4.0625 | 499 | Knowledge Article | Science & Tech. | 49.160714 |
WatchList Species Account for Wilson’s Plover |
Qualifies for the list as a Declining Yellow List Species
|Photo: Bill Hubick
The Wilson’s Plover is a strictly coastal species that breeds from the eastern shore of Virginia to Florida and along the Gulf Coast into Mexico, in the West Indies and Bahamas, along both coast... | <urn:uuid:41feee4e-5600-45a8-8e0e-a2e7278d0f8e> | 3.53125 | 325 | Knowledge Article | Science & Tech. | 42.859091 |
Last summer, tropical storms Irene and Lee inflicted major damage on the Hudson River’s watershed. While the events may seem like a distant memory now, affected ecosystems are still recovering.
Not surprisingly, the storms caused large changes in the Hudson River. For example, roughly a year’s worth of water and sedime... | <urn:uuid:ec4b3261-b12a-44d1-bc2f-d2920f09ddf3> | 3.953125 | 802 | Knowledge Article | Science & Tech. | 34.224882 |
The Use of RAPD Markers to Assess Catfish Hybridization
Source: Biodiversity and Conservation, Volume 14, Number 12, November 2005 , pp. 3003-3014(12)
Abstract:Taiwan's endemic catfish Clarias fuscus is gradually disappearing from its native habitat, and has been proposed for genebank preservation. Environmental pressu... | <urn:uuid:ab6ecc16-5bba-4570-b391-7185341db171> | 2.71875 | 398 | Academic Writing | Science & Tech. | 46.4354 |
A 2010 Orionid meteor, seen over Western Ontario, Canada. A waxing gibbous moon shines brightly at the left side of the image. (Meteor Physics Group, University of Western Ontario)
Chart showing Orionid meteor ablation -- or "burn-up" -- altitudes. (NASA's Meteoroid Environment Office/MSFC/Danielle Moser)
The most famo... | <urn:uuid:e437ccc1-412e-42bc-9a0b-509a5feee100> | 3.578125 | 636 | Knowledge Article | Science & Tech. | 61.919948 |
Introducing: D. Radiodurans better known as Connan the Bacterium. It withstands attacks from acid baths, extreme temperatures, and even radiation doses. It was found living on cow patties and elephant dung and came to scientists’ attention when it refused to die in food sterilization tests.
Connan is looking to be our ... | <urn:uuid:ea9d4e13-c94e-42c0-ae66-3be47bc09aac> | 3.09375 | 156 | Knowledge Article | Science & Tech. | 37.466287 |
measure from A to B, fold her tape in four and mark off the point E,
which is thus one quarter of the side.
Then, in the same way, mark off
the point F, one-fourth of the side AD.
Now, if she makes EG equal to
AF, and GH equal to EF, then AH is the required width for the path in
order that the bed shall be exactly half... | <urn:uuid:34cafd10-0584-40a7-aa97-65f0061af193> | 3.515625 | 187 | Tutorial | Science & Tech. | 67.668444 |
At the moment it is a faint object, visible only in sophisticated telescopes as a point of light moving slowly against the background stars. It doesn't seem much – a frozen chunk of rock and ice – one of many moving in the depths of space. But this one is being tracked with eager anticipation by astronomers from around... | <urn:uuid:1a773f61-841a-4976-8f38-ab0ac4cf6436> | 3.734375 | 407 | Truncated | Science & Tech. | 41.261616 |
RE: Inserting White Space ( ) through XSL.
Someone might give you the answer, but you're on the wrong list. If you know what HTML you want to generate and don't know how to generate it, this is the place to ask. If you don't know what HTML you need in order to produce a particular effect on the screen, your problem is ... | <urn:uuid:d949685d-6445-490d-b6c4-8975f7bc1e56> | 2.8125 | 498 | Comment Section | Software Dev. | 75.682436 |
Here, friends and neighbors, is the eighth and final video of Engineer Guy series #4. The element of the week is called plumbum in Latin, abbreviated to Pb on the periodic table, and generally known as lead. Formed into electrodes with its oxide and submerged in sulfuric acid, lead is an essential component in the igni... | <urn:uuid:c2c4b099-a2d3-4fc2-b447-f9dfbe1358af> | 3.125 | 157 | Truncated | Science & Tech. | 49.327817 |