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Let’s go back and consider a linear map . Remember that we defined its rank to be the dimension of its image. Let’s consider this a little more closely.
Any vector in the image of can be written as for some vector . If we pick a basis of , then we can write . Thus the vectors span the image of . And thus they contain a... | <urn:uuid:a1848edc-3360-42a4-b7b5-4eeaece7ad9d> | 3.53125 | 271 | Personal Blog | Science & Tech. | 58.287841 | 2,200 |
Computational model offers insight into mechanisms of drug-coated balloons.
Profound doubts were the frequent response when MIT biophysicist Alexander Rich announced that two single-strand ribonucleic acid (RNA) molecules could spontaneously align themselves to form a double helix, just like those of their famous cousi... | <urn:uuid:53b0ec42-68a2-421b-b182-f2399488e686> | 3.625 | 710 | Knowledge Article | Science & Tech. | 41.355357 | 2,201 |
|Dynein Motor Domain Shows Ring-Shaped Motor, Buttress|
Movement is fundamental to life. It takes place even at the cellular level where cargo is continually being transported by motor proteins. These tiny machines convert the energy gained from hydrolysing ATP into a series of small conformational changes that allow t... | <urn:uuid:74510ee1-aa52-4210-98db-61c0830ae357> | 2.75 | 957 | Academic Writing | Science & Tech. | 45.023655 | 2,202 |
Lichens in Australia
The first published report of an Australian lichen appeared in 1806 and since then numerous species have been reported for Australia. Currently over 3000 species are said to occur in Australia and a little over a third are not known elsewhere. Amongst those 3000 plus there are still undoubtedly som... | <urn:uuid:e61a6bb8-832b-481b-8575-316402770cee> | 3.515625 | 1,955 | Knowledge Article | Science & Tech. | 27.81345 | 2,203 |
A Change of Seasonality of the Upper Arctic Ocean in Response to Atmospheric and Sea Ice Forcing
The PI proposes to investigate the change of seasonality of the Arctic Ocean Ekman transport and upwelling/downwelling, and their relationships to key components of the arctic system. A systematic investigation of the Arcti... | <urn:uuid:2a5bf9d5-c7dc-499d-8aab-f5e334ee37e1> | 2.546875 | 661 | Academic Writing | Science & Tech. | 44.865869 | 2,204 |
Interview with Matt Golombek
Pasadena, Spirit Mission Sol 2
See gallery of Spirit's Sol 1 images and slideshow
Now that Spirit has landed safely on Mars, the mission science team has begun to think about where they'd like to send the rover and what scientific experiments they'd like to do. Astrobiology Magazine's manag... | <urn:uuid:40b2eb9b-935b-40d4-a9f2-572868f2ebd9> | 2.5625 | 2,362 | Audio Transcript | Science & Tech. | 63.367644 | 2,205 |
Magny et al. utilizing advanced scientific techniques, reconstructed 1,000 years of past summer (July) temperatures for the Swiss Jura Mountains region. Unequivocally, they found that July temperatures during the Medieval Period were significantly warmer than modern summer temps.
"Working at Lake Joux in the Swiss Jura... | <urn:uuid:bbce9d43-37d2-4487-9315-9f58b9d709c0> | 3.453125 | 250 | Truncated | Science & Tech. | 62.636842 | 2,206 |
Place a sheet of paper on a flat desk. Assume that the magnetic field is coming perpendicularly out of the paper. Three particles are traveling diagonally from the left bottom edge to the right top edge. Particle 1 is deflected upwards, Particle 2's motion is not affected and Particle 3 is deflected downwards. What can... | <urn:uuid:4cb38e8d-0a48-4b28-8c6f-b8b6f115fee9> | 2.625 | 79 | Q&A Forum | Science & Tech. | 57.689875 | 2,207 |
Groundhog Day in a Year Without a Winter
The groundhog Punxsutawney Phil may have seen his shadow today, but the prospect of six more weeks of the mild winter of 2011/12 doesn't seem so terrible. In fact, now that we're past the typical coldest period of the year, the days are already getting longer, and the typical av... | <urn:uuid:b2c5686b-0848-447e-bcb0-dc2ba1a2527a> | 2.921875 | 813 | News Article | Science & Tech. | 56.08038 | 2,208 |
in another class i used:
CoffeeCup original = new CoffeeCup();
original.add(75); // Original now contains 75 ml of coffee
CoffeeCup copy = (CoffeeCup) original.clone();
Now i got exact copy of CoffeeCup.
my question is: how the application is creating an subclass object(CoffeeCup) when I call super.clone().
As per my u... | <urn:uuid:0dada657-197b-47c7-9020-2e8653ef6c14> | 3.484375 | 272 | Q&A Forum | Software Dev. | 60.264375 | 2,209 |
Creeping climate change in the Southwest appears to be having a negative effect on pinyon pine reproduction, a finding with implications for wildlife species sharing the same woodland ecosystems, says a University of Colorado Boulder-led study.
According to Einstein, whenever massive objects interact, they produce grav... | <urn:uuid:b8bac2dc-20d4-4590-93c9-7fec580e0cc8> | 2.75 | 459 | News Article | Science & Tech. | 14.622159 | 2,210 |
think before you codeThis tip submitted by Timofei Gerasimov on 2004-12-29 00:00:00. It has been viewed 36739 times.
Rating of 6.5 with 216 votes
Have the structure of the program very clear in your mind before you ever write a single line of code. If making diagrams or outlines using paper and pencil helps you to do t... | <urn:uuid:b38588ca-2f3d-4777-8aaf-a5d8b1a5382f> | 3.359375 | 164 | Tutorial | Software Dev. | 73.114447 | 2,211 |
Driven to extinction?
Researcher believes invasive species might have caused biodiversity disaster 370 million years ago
More science stories
- Medical examiner: 24 dead in Oklahoma twister
- Heart transplant giving climatologist Lonnie Thompson a second chance
- Pesticide makers seek cause of bee deaths
- Pesticide ma... | <urn:uuid:5f4a786e-17e7-4c24-ad83-9a6d14341df7> | 3.578125 | 1,273 | Truncated | Science & Tech. | 41.301439 | 2,212 |
Pex is a testing tool developed by Microsoft Research. It provides three very useful capabilities to support testing. First, it can explore your code and suggest which tests you should have. Second, if you have parameterized tests, Pex can figure out which combination of parameters needs be tested in order to give you ... | <urn:uuid:93cadbc3-6288-4f82-adbb-4377e0d3dee7> | 2.640625 | 1,217 | Knowledge Article | Software Dev. | 43.456032 | 2,213 |
September 23 marked first day of autumn north of the Equator and the first day of spring to the south.
Day and night were approximately of equal length worldwide at that time, and will be again next March 20.
The animation of Earth’s seasons to the right takes us, one day at a time, from September 19, 2010 to September... | <urn:uuid:0d6036f1-ae48-44dd-bea0-e411f4f607c7> | 3.8125 | 351 | Knowledge Article | Science & Tech. | 62.802878 | 2,214 |
Superlattice to Nanoelectronics provides a historical overview of the early work performed by Tsu and Esaki, to orient those who want to enter into this nanoscience. It describes the fundamental concepts and goes on to answer many questions about todays 'Nanoelectronics'. It covers the applications and types of devices... | <urn:uuid:2313ce39-af9a-4da6-9157-c0166ef12ecb> | 2.953125 | 309 | Product Page | Science & Tech. | 10.631598 | 2,215 |
Helping Streams Help Themselves, Naturally
The sights and sounds of a stream running through your backyard or your favorite neighborhood park can be a soothing antidote to the busy pace of modern life. But when U.S. Environmental Protection Agency scientists Paul Mayer and Elise Striz look at a creek bed, they notice s... | <urn:uuid:216863e1-5d0e-48c7-b592-9334ce3ad29e> | 3.734375 | 818 | Knowledge Article | Science & Tech. | 38.667686 | 2,216 |
So far we've looked at how weather is observed near the ground, but the atmosphere is like a layer cake. We must examine all the layers before we can determine a complete picture. The lowest layer is important because it's where we live, but what happens at ground level is really a result of the integrated behavior at ... | <urn:uuid:b99b8bf6-d018-47ae-a780-84fbd8f3d8ca> | 4.03125 | 951 | Truncated | Science & Tech. | 44.153036 | 2,217 |
The Basic Linear Algebra Subprograms (blas) define a set of fundamental operations on vectors and matrices which can be used to create optimized higher-level linear algebra functionality.
The library provides a low-level layer which corresponds directly to the C-language blas standard, referred to here as “cblas”, and ... | <urn:uuid:e363db3a-776d-4a6f-9d52-27799dc33e1f> | 2.84375 | 583 | Documentation | Software Dev. | 37.18211 | 2,218 |
R is a language and environment for statistical computing and graphics. It is a GNU project which is similar to the S language and environment which was developed at Bell Laboratories (formerly AT&T, now Lucent Technologies) by John Chambers and colleagues. R can be considered as a different implementation of S. There ... | <urn:uuid:3184b625-02c2-48dd-9765-6b76ec53fbb7> | 3.5 | 711 | Knowledge Article | Software Dev. | 42.657449 | 2,219 |
|CNIDARIA : ACTINIARIA : Edwardsiidae||SEA ANEMONES AND HYDROIDS|
Description: A tiny worm-like anemone up to 40mm long and 2mm diameter, usually about 15mm x 1mm. Up to 16 very long (relative to disc size) tentacles. Transparent, more or less patterned with white as in illustration.
Habitat: Habitat similar to Edwards... | <urn:uuid:0c50637f-062d-4fc3-8411-3b533f31eaba> | 2.90625 | 287 | Knowledge Article | Science & Tech. | 35.394334 | 2,220 |
There are currently over 700 known exoplanets, however the Kepler space craft has reportedly found another 1000, although many have not yet been confirmed by ground based observations. Jupiter sized Exoplanets are reasonably easy to detect, but Earth sized ones are extremely difficult, but Kepler may now have found som... | <urn:uuid:82ec5866-658a-4d83-abb4-97d2d5aa9ab7> | 3.65625 | 225 | Knowledge Article | Science & Tech. | 23.458878 | 2,221 |
Scientists are claiming they have discovered a new species of monkey living in the remote forests of the Democratic Republic of Congo -- an animal well-known to local hunters but until now, unknown to the outside world.
In a paper published Wednesday in the open-access journal Plos One, the scientists describe the new ... | <urn:uuid:2001c486-8925-4dea-bc1f-3c965615dc2e> | 3.578125 | 445 | News Article | Science & Tech. | 52.605775 | 2,222 |
Were that process to continue or accelerate, many scientists say, the anticipated rise in sea levels over the next few decades may have to be revised upwards.
The National Oceanic and Atmospheric Administration, in its annual Arctic Report Card, published this week, said dramatic melting of the Greenland ice sheet had ... | <urn:uuid:e472be56-7a04-444c-b495-38313d406976> | 3.109375 | 191 | News Article | Science & Tech. | 31.997769 | 2,223 |
. "8 Resistance, Resilience, and Redundancy in Microbial Communities--STEVEN D. ALLISON and JENNIFER B. H. MARTINY." In the Light of Evolution, Volume II: Biodiversity and Extinction. Washington, DC: The National Academies Press, 2008.
The following HTML text is provided to enhance online
readability. Many aspects of t... | <urn:uuid:cc5f5508-9667-47eb-bc35-87162c8790e0> | 3.09375 | 631 | Academic Writing | Science & Tech. | 11.852347 | 2,224 |
The Global Climate at a Glance (GCAG) web application can be used to retrieve monthly and annual global temperature anomaly maps that date back to 1880. Users can also create timeseries for locations around the globe by selecting a point on the map. The interactive interface allows users to adjust the vertical and hori... | <urn:uuid:8a4ea970-b54c-4f1a-86d1-7849cda21dd1> | 3.125 | 243 | Knowledge Article | Science & Tech. | 24.251802 | 2,225 |
Update: On 16 October, NASA released an image of a faint ejecta plume observed by the LCROSS shepherding spacecraft. See Elusive lunar plume caught on camera after all
In the final minutes of its plunge toward the moon, NASA's LCROSS spacecraft spotted the brief infrared flash of a rocket booster hitting the lunar surf... | <urn:uuid:3d55acfc-9c00-4b24-af9a-7713e180542f> | 3.546875 | 2,307 | Comment Section | Science & Tech. | 62.924365 | 2,226 |
Huntington is the science director for Pew's Arctic Program.
For the oil and gas industry, the Arctic Ocean is the final frontier. Beneath the ocean floor lies an estimated 90 billion barrels of recoverable oil - about 13 per cent of the global total. As the sea ice retreats and traditional sources of hydrocarbons dwin... | <urn:uuid:8a5094ac-8385-4274-8624-963dc433cfa1> | 3.53125 | 218 | Truncated | Science & Tech. | 50.771927 | 2,227 |
Kelly at ORNL, with the tandem in the background
Kelly (with Geiger counter) being interviewed by an Albuquerque news agency during one of the open days at the Trinity Site
Kelly Picking apples from Newton's Apple Tree in the courtyard of the Physics building in York, UK
What if only a few people could understand you? ... | <urn:uuid:114ef840-4c0b-4e63-8a31-13998e924249> | 3.3125 | 1,222 | About (Pers.) | Science & Tech. | 48.276644 | 2,228 |
It might be a completely new species--a very tricky new species.
Learning skills that will be invaluable in later foxhood
In the future, the great Pixel Wolves Of The Sky will look down below on the mutated fish. The wolves will be hungry but also weirded out.
Cliff the beagle can sniff out a dangerous bacterium just b... | <urn:uuid:c9089bd5-0d7f-494b-8f49-de75bd415051> | 2.6875 | 506 | Content Listing | Science & Tech. | 51.831468 | 2,229 |
William F. Jasper
The New American
Dec 19, 2012
GIGO, for garbage-in, garbage-out is a basic principle of computing and/or decision-making which holds that the validity or integrity of the input will determine the validity or integrity of the output. Which is why first-year computer students are taught to check and rec... | <urn:uuid:83c4d6fb-06c8-408a-8f20-0aaa96e2d8e6> | 2.515625 | 2,948 | Nonfiction Writing | Science & Tech. | 31.407265 | 2,230 |
Airdate: Sep 14, 2004
Scientist: Professor Michael Wells (see home address in details)
A little caterpillar + a big appetite and a lot of help = the world's finest fabric.
ambience: Silkworms munching mulberry leaves
We're listening to the sounds of caterpillars munching mulberry leaves -- not just any caterpillars, mi... | <urn:uuid:65d8097b-aa57-4ff5-add7-ff254ff7df80> | 2.609375 | 472 | Audio Transcript | Science & Tech. | 61.056 | 2,231 |
Courtesy jimmowatt "101010 (base two (binary)) equals 42 (base ten). Oddly enough, this is evenly divisible by the number of days in a week (7 (lucky)); and equally oddly, is also evenly divisible by the number 6 (which is generally designated as being unlucky). Both a Ying and Yang situation seem to be incorporated in... | <urn:uuid:eecc3fc9-5ba5-466d-ba38-2e209851b057> | 2.65625 | 143 | Knowledge Article | Science & Tech. | 60.853 | 2,232 |
Anyone who has ever seen a streaky line of vapor, known as a contrail, behind a high-flying aircraft knows that airplanes can produce their own clouds. But in rarer cases, aircraft can also punch round holes, such as the one over Antarctica pictured here, or carve long channels through existing, natural clouds. Those f... | <urn:uuid:f059d02f-96af-45bf-b069-b425bc15721c> | 3.859375 | 147 | Knowledge Article | Science & Tech. | 34.675756 | 2,233 |
Workbook for BaBar Offline Users - Writing Code
Using an Object Oriented design approach to make proper use of C++.
Object Oriented programming offers a powerful model for writing
computer software. Objects are "black boxes" which send and receive
messages. This approach speeds the development of new programs, and,
if ... | <urn:uuid:7219644c-1d7e-486c-9561-60d1fb985e48> | 3.296875 | 1,508 | Tutorial | Software Dev. | 59.950687 | 2,234 |
|Oracle® OLAP DML Reference
10g Release 1 (10.1)
Part Number B10339-02
The RTRIM function removes characters from the right of a text expression, with all the rightmost characters that appear in another text expression removed. The function begins scanning the base text expression from its last character and removes al... | <urn:uuid:cd520809-c4ad-45d4-9fa2-72200ab700b1> | 3.40625 | 191 | Documentation | Software Dev. | 66.864123 | 2,235 |
Pollution-gobbling molecules in global warming SMACKDOWN
Boffins: Newly observed particles scrub our filthy air
Elusive pollution-busting molecules are scrubbing our planet's atmosphere at a much faster rate than first imagined, according to gas-bothering boffins.
Reactions by the cleaning agents, known as Criegee inte... | <urn:uuid:5f5ad4a1-f970-4c99-a3d2-53feaf94b094> | 3.3125 | 540 | News Article | Science & Tech. | 15.257857 | 2,236 |
Want to stay on top of all the space news? Follow @universetoday on Twitter
Orbits of twin moonlets around 87 Sylvia. Image credit: ESO Click to enlarge
One of the thousands of minor planets orbiting the Sun has been found to have its own mini planetary system. Astronomer Franck Marchis (University of California, Berke... | <urn:uuid:51e12761-a4e3-4c84-8a2e-c5691d857427> | 3.203125 | 839 | News Article | Science & Tech. | 45.379911 | 2,237 |
2008.02.20 > For Immediate Release
contact: Wendy Townley - University Relations
phone: 402.554.2762 - email: email@example.com
New Cell Behaviors Discovered by UNO Research Team
Omaha - The Mathematical Biology Research Group at the University of Nebraska at Omaha (UNO) has found new evidence that individual cells hav... | <urn:uuid:2ce76f63-f04c-464d-b960-fa411bd3f610> | 2.734375 | 642 | News (Org.) | Science & Tech. | 32.043974 | 2,238 |
Highlights research studies involving genetics and genomics, includes a glossary of terms on the subject, a directory of scientists involved in this type of work, and description of research facilities through which USGS carries out genetic studies
Overview of chemical analyses, tracer studies, gas geochemistry, stable... | <urn:uuid:93903e43-b3b2-4efe-a513-4468f8ea0b88> | 2.53125 | 234 | Content Listing | Science & Tech. | -0.047769 | 2,239 |
I'm Dave Thurlow for the Mount Washington Observatory and this is The Weather Notebook. Around the beginning of this century, there were few scientists who had much of an idea about how rain, hail, sleet, and snow form. It was, and still is, easy to get the general process of water vapor turning to liquid water or ice,... | <urn:uuid:c68ca766-d280-4f15-9e5e-e03d41a035f6> | 3.3125 | 347 | Audio Transcript | Science & Tech. | 50.238824 | 2,240 |
The Atacama Desert is a good place for astronomy. There usually aren't clouds, and there is almost no light pollution. This picture shows the La Silla Observatory. There are a bunch of domes with telescopes inside in this picture.
Click on image for full size
Image courtesy of the European Southern Observatory, photogr... | <urn:uuid:a935c0a2-a5f2-4bce-ad3a-a493d0ac6366> | 3.4375 | 943 | Knowledge Article | Science & Tech. | 55.247328 | 2,241 |
This chart is a comprehensive view of global, anthropogenic greenhouse gas (GHG) emissions. The chart is an updated version of the original chart, which appeared in Navigating the Numbers: Greenhouse Gas Data and International Climate Policy.
One of the greatest challenges relating to global warming is that greenhouse ... | <urn:uuid:950ac813-d5e0-46c8-a195-4f8acf42bc02> | 3.53125 | 364 | Knowledge Article | Science & Tech. | 40.826894 | 2,242 |
This pie chart shows the relative likelihood of observing particular other species commonly observed near Allophylus edulis
These species are those which most commonly occur in our observation database near Allophylus edulis. Observations favor some phyla over others. Typically Bacteria, Fungi, Protozoa, and Arthropods... | <urn:uuid:b7d5eee8-3ff2-43e3-b9ea-e55a5250661d> | 3.140625 | 240 | Structured Data | Science & Tech. | 21.488161 | 2,243 |
The Moon's far side, although not lacking for light, remained dark in the sense of hidden or obscured until the space race between the US and USSR took aim at the Moon. The Soviets' Luna 3 probe returned the first images of the far side in 1959, and the results were a bit of a surprise. The near side is covered with la... | <urn:uuid:fdd43574-a116-43b0-859b-789dadeb76b6> | 4.3125 | 1,072 | News Article | Science & Tech. | 49.624754 | 2,244 |
A privately funded spacecraft launched from a Russian submarine and intended to deploy a solar sail into Earth's orbit was lost to controllers shortly after takeoff, but late Tuesday engineers tracking Cosmos 1 said the craft might have been found.
Engineers in Moscow and Pasadena poring through reams of tracking data ... | <urn:uuid:3ce479ac-237d-413d-8305-0bfef3690921> | 2.765625 | 1,039 | News Article | Science & Tech. | 50.487659 | 2,245 |
CORVALLIS, Ore. – Ocean acidification is a complex global problem because of increasing atmospheric carbon dioxide, but there also are a number of local acidification “hotspots” plaguing coastal communities that don’t require international attention – and which can be addressed now.
A regulatory framework already is in... | <urn:uuid:c95638e3-ebe8-4804-85b1-086f825a42e6> | 3.109375 | 837 | News (Org.) | Science & Tech. | 24.162851 | 2,246 |
Carbon dioxide from burning fossil fuels is changing the oceans’ chemistry. This is ocean acidification. The head of the National Oceanic and Atmospheric Administration calls ocean acidification global warming’s equally evil twin.
The oceans are absorbing up to a million tons of carbon dioxide every hour.
The good news... | <urn:uuid:ddaffca7-1156-4563-9b12-3b2834675bd1> | 3.4375 | 855 | Knowledge Article | Science & Tech. | 33.405447 | 2,247 |
A fun new technology that harvests power from a small generator embedded in the sole of your shoe has been developed by Dr. Ville Kaajakari at Louisiana Tech University (LTU).
The technology cannot power your house (yet), but it can be used for a range of useful purposes.
“This technology could benefit, for example, hi... | <urn:uuid:22caffe0-e113-4897-af10-f3551a8bb8ff> | 2.875 | 640 | News Article | Science & Tech. | 25.272462 | 2,248 |
Global hurricane activity has decreased to the lowest level in 30 years.
Very important: global hurricane activity includes the 80-90 tropical cyclones that develop around the world during a given calendar year, including the 12-15 that occur in the North Atlantic (Gulf of Mexico and Caribbean included). The heightened... | <urn:uuid:6aefc5be-c86d-4b69-9deb-35a718b379e0> | 2.609375 | 1,729 | Academic Writing | Science & Tech. | 28.649356 | 2,249 |
Ocean acidification: Coming soon to an ocean near you
04 November 2010 | International news release
Manmade ocean acidification will have profound impacts on marine life, even without a further increase of CO₂ emissions. Latest evidence shows that sea water chemistry is already changing and only rapid and huge reductio... | <urn:uuid:0d82683a-9ba1-425d-b256-e4c720bd0436> | 3.125 | 1,202 | News (Org.) | Science & Tech. | 25.77212 | 2,250 |
Challenges ahead Data availability and accessibility
Improved understanding of the effect of climate change in high mountains on downstream communities and water re- sources will require significant efforts to develop databases and analytical capacities. Currently most projections of cli- mate change are based on gener... | <urn:uuid:e780b98d-0a02-4866-9deb-2984d6af6a6a> | 2.90625 | 778 | Knowledge Article | Science & Tech. | 19.388009 | 2,251 |
States are the basic units of the state machines. In UML 2.0 states can have substates.
Execution of the diagram begins with the Initial node and finishes with Final or Terminate node or nodes. Please refer to UML 2.0 Specification for more information about these elements.
State Machine diagrams describe the logic beh... | <urn:uuid:ea692ff2-4976-4580-b298-dbf1d0cd0664> | 3.046875 | 162 | Documentation | Software Dev. | 60.666143 | 2,252 |
New in version 2.1.
The inspect module provides several useful functions to help get information about live objects such as modules, classes, methods, functions, tracebacks, frame objects, and code objects. For example, it can help you examine the contents of a class, retrieve the source code of a method, extract and f... | <urn:uuid:1243e50d-ecd7-4ea6-b13f-efb27d1010a4> | 2.734375 | 2,249 | Documentation | Software Dev. | 41.128717 | 2,253 |
A lightning storm started this cluster of wildfires in the Cascade Mountains of Oregon on August 24, 2011. Burning through forest, grass, and brush, the fires had covered 90,436 acres as of September 1. They are 25 percent contained.
The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite acq... | <urn:uuid:f1a7838b-bc2f-4c4b-8683-60e5ebe8cfb3> | 3.171875 | 319 | Knowledge Article | Science & Tech. | 56.705348 | 2,254 |
Two Types of Photovoltaic Solar Cells
Photovoltaics, which directly convert sunlight into electricity, include both traditional, polysilicon-based solar cell technologies and new thin-film technologies. Thin-film manufacturing involves depositing extremely thin layers of photosensitive materials on glass, metal, or pla... | <urn:uuid:d1dbd0cf-3b53-4aaf-ac59-a0fd0e5e3b4f> | 3.46875 | 715 | Knowledge Article | Science & Tech. | 38.196721 | 2,255 |
The right hand side of the above line dynamically allocates a single integer on the heap returns a pointer of type int*. The left hand side of the above line implicitly copy constructs a pointer on the stack using the pointer returned from the new expression. It is the equivalent of writing:
int *myPtr(new int);
The re... | <urn:uuid:91c813a8-5ade-4a3c-93a7-7f630c62b67a> | 2.921875 | 665 | Comment Section | Software Dev. | 58.503189 | 2,256 |
We've discovered evidence of just about every gas imaginable out in space, but one we'd never seen was molecular oxygen, the stuff we breathe everyday. Now, thanks to powerful infrared telescopes, we've found the very first traces of space oxygen.
While individual oxygen atoms are found throughout space, that's not wha... | <urn:uuid:3e84f654-063a-4709-b68c-938435cdf8b7> | 3.9375 | 391 | News Article | Science & Tech. | 51.134505 | 2,257 |
Pub. date: 2011 | Online Pub. Date: May 04, 2010 | DOI: 10.4135/9781412973816 | Print ISBN: 9781412996822 | Online ISBN: 9781412973816| Publisher:SAGE Publications, Inc.About this encyclopedia
Anthony R. S. Chiaviello
Bluebelts are undeveloped areas retained by cities to provide stormwater catchment and wetland-based w... | <urn:uuid:756bd5b1-805d-49db-8a51-6981e18613d8> | 3.5625 | 268 | Truncated | Science & Tech. | 17.432932 | 2,258 |
Manual Section... (3) - page: getwd
NAMEgetcwd, getwd, get_current_dir_name - Get current working directory
#include <unistd.h> char *getcwd(char *buf, size_t size); char *getwd(char *buf); char *get_current_dir_name(void);
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
DESCRIPTIONThese functio... | <urn:uuid:6871ddd3-5be6-4053-9363-cc29ce01215b> | 2.953125 | 1,013 | Documentation | Software Dev. | 55.413855 | 2,259 |
Tricks for Solving Math Problems
Date: 9/27/95 at 23:50:19 From: Anonymous Subject: Mathematical Tricks I recently learned a trick for multiplying 2 digit numbers by 11. Add the 2 digits of the number and insert the sum between the original 2 digits. If the sum is greater than 10, add the digit in the tens place to the... | <urn:uuid:0a40342e-7faa-46a9-be83-6017af08c9d1> | 3.03125 | 323 | Comment Section | Science & Tech. | 85.578 | 2,260 |
A Parabola Proof
Library Home || Primary || Math Fundamentals || Pre-Algebra ||
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|Trig/Calc, difficulty level 3. Prove that the area of a parabola is 2/3 the product of its width and height.|
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A football place kicker is about to attempt a field goal from the 30-yard line. He is lined up directly in front of the left goal post; but since there is a wind coming from the right side of the field, the kicker aims for the right goal post. This means that, from above, the ball will be kicked at a 79º angle to the 3... | <urn:uuid:a528b95a-939e-4632-b6d8-e66086c20c3f> | 3.296875 | 241 | Q&A Forum | Science & Tech. | 78.708583 | 2,262 |
One of the most basic questions in mathematics is finding solutions to equations. In this post I want to make a short overview of the ways to solve some of the common forms of equations, and I also want to discus the history of how this solutions were found. This is only the first post about this subject, so it is most... | <urn:uuid:56fb8810-c673-46a7-95ce-8944ae2686d6> | 3.328125 | 1,248 | Personal Blog | Science & Tech. | 58.763916 | 2,263 |
Giant squid – also known also by their scientific name Architeuthis – have been the stuff of both legend and science for hundreds of years. Stories of great tentacled Kraken in Scandinavia and in the scientific writings of Pliny the Elder are some of the earliest indications that such monsters were thought to exist. Gi... | <urn:uuid:1e4ab405-69e6-4bbd-ad48-fd8fdec64ba8> | 2.921875 | 2,161 | News Article | Science & Tech. | 48.774846 | 2,264 |
Markdown Syntax Guide
This is an overview of Markdown's syntax. For more information, visit the Markdown web site.
Italics and Bold
This is italicized, and so is this.
This is bold, and so is this.
You can use italics and bold together if you have to.
There are three ways to write links. Each is easier to read than the... | <urn:uuid:fe93ce98-04f8-4316-bbdf-95864213b77d> | 3.09375 | 1,542 | Documentation | Software Dev. | 63.835254 | 2,265 |
Computers today are more mobile than ever. From small laptops to Tablet PCs, many computers can go wherever the user wants to go. Programs that take advantage of the computer's mobility can add significant value to people's lives. For example, a program that can find nearby restaurants and provide driving directions wo... | <urn:uuid:9628c06a-b907-4826-b78b-6aa97aa80f3e> | 3.234375 | 362 | Documentation | Software Dev. | 15.885548 | 2,266 |
Gets or sets the source for the image.
Assembly: System.Windows (in System.Windows.dll)
Dependency property identifier field: SourceProperty
You can set the by specifying an absolute URL (e.g. http://contoso.com/myPicture.jpg) or specify a URL relative to the XAP file of your application.
You can set this property in X... | <urn:uuid:ccdba305-121f-4a31-8fbc-20de02fc4c9d> | 2.65625 | 338 | Documentation | Software Dev. | 49.63625 | 2,267 |
Installs your own termination routine to be called by terminate.
The set_terminate function installs termFunction as the function called by terminate. set_terminate is used with C++ exception handling and may be called at any point in your program before the exception is thrown. terminate calls abort by default. You ca... | <urn:uuid:484bc00f-85f1-4321-aed6-32ff47102ee4> | 3.21875 | 374 | Documentation | Software Dev. | 39.437421 | 2,268 |
Brain Has "Face Place" for Recognition, Monkey Study Confirms
for National Geographic News
|February 3, 2006|
The brain of the macaque monkey has a distinct area dedicated to recognizing faces, according to a new study.
This brain region is the first one in any animalincluding humansfound to have nearly all of its nerv... | <urn:uuid:cd33c6a5-f0b8-42c1-bda5-3ea855a6d2cd> | 3.796875 | 928 | News Article | Science & Tech. | 40.941783 | 2,269 |
When a scientist can't give you an answer, ask a garden gnome. Researchers have long hypothesized that objects weigh less at Earth's equator because the planet's spin and shape lessen gravity's pull here versus at the poles. (Imagine Earth as a spinning disc. A bean sitting in the center would feel nothing, whereas a b... | <urn:uuid:17c79f46-1779-42aa-a4a7-fb1d9893f0a5> | 2.984375 | 243 | News Article | Science & Tech. | 53.409474 | 2,270 |
UNL physicist discusses high-order harmonic generation at AAAS
Released on 02/18/2013, at 2:00 AM
Office of University Communications
University of Nebraska–Lincoln
One-billionth of a billionth of a second.
That's the scale -- an attosecond -- at which scientists seek to image and control electronic motion in matter.
T... | <urn:uuid:d1ecc7ae-e9bb-4b10-9a04-7c0d10e7ebba> | 2.6875 | 562 | News (Org.) | Science & Tech. | 19.708464 | 2,271 |
Roscosmos will soon consider a project to prevent a large asteroid from colliding with Earth after 2030, the head of Russia's space agency said on Wednesday.
"A scientist recently told me an interesting thing about the path [of an asteroid] constantly nearing Earth... He has calculated that it will surely collide with ... | <urn:uuid:6449bdd7-174e-42e8-afc1-516699dbf64f> | 3.296875 | 939 | News Article | Science & Tech. | 45.496797 | 2,272 |
Design your own scoring system and play Trumps with these Olympic Sport cards.
There is a long tradition of creating mazes throughout history and across the world. This article gives details of mazes you can visit and those that you can tackle on paper.
This activity challenges you to decide on the 'best' number to use... | <urn:uuid:6609c9c8-0830-44df-827f-97cb81e123c4> | 3.34375 | 490 | Content Listing | Science & Tech. | 60.717795 | 2,273 |
]NASA's Solar Dynamics Observatory (SDO), best known for cutting-edge images of the sun, has made a discovery right here on Earth.
"It's a new form of ice halo," says atmospheric optics expert Les Cowley of England. "We saw it for the first time at the launch of SDO--and it is teaching us new things about how shock wav... | <urn:uuid:3bcc352d-bda5-4b8f-bfdb-184f447e4076> | 3.328125 | 675 | News Article | Science & Tech. | 57.059754 | 2,274 |
The US space agency has narrowed down its prediction of when a defunct six-ton satellite will crash back to Earth, saying on Wednesday that it is expected to land on September 23, US time.
"The time reference does not mean that the satellite is expected to re-enter over the United States. It is simply a time reference,... | <urn:uuid:a2f53c26-02ee-4d4c-ad9a-45e44d343dee> | 2.890625 | 421 | News Article | Science & Tech. | 48.072889 | 2,275 |
Laser physicists are good at producing and manipulating single photons, but as with good comedy, the timing is important. Even the best experiments in quantum cryptography and computing–applications that make use of single photon properties–use sources that emit photons at random times. In the 4 October PRL a French te... | <urn:uuid:48329b8f-7938-49fb-9a1c-b4f98dc75ba9> | 3.625 | 692 | News Article | Science & Tech. | 31.720896 | 2,276 |
Space is three-dimensional ... or is it? When we spoke to theoretical physicist David Berman in October this year we found out that in fact, we are all used to living in a curved, multidimensional universe. And a mathematical argument might just explain how those higher dimensions are hidden from view.
Kaluza, Klein an... | <urn:uuid:80438df5-2719-4ec1-ba89-551d1176c8f5> | 2.640625 | 195 | Content Listing | Science & Tech. | 50.347848 | 2,277 |
The Solar Polar Orbiter (SPO) Technology Reference Study (TRS) examines the feasibility of a mission to obtain true solar polar orbit at an altitude of less than 0.5 AU to perform remote sensing of the Sun and in situ measurements of the surrounding environment.
The Solar Polar Orbiter
The Solar Polar Orbiter has the f... | <urn:uuid:310c42cb-21fa-4e88-a253-713ce71f63a9> | 3.28125 | 467 | Knowledge Article | Science & Tech. | 41.244828 | 2,278 |
Amongst all the excitement over the first results from Herschel, it’s easy to forget about its comparatively tiny American cousin Spitzer. Launched in 2003 with its 3 instruments IRAC, IRS and MIPS, Spitzer covers the infrared wavelengths from around 3 to 150 microns – a region that from Earth is either totally inacces... | <urn:uuid:23f28de9-ac0f-4d53-b670-96ba643bc7ab> | 3.25 | 1,575 | Personal Blog | Science & Tech. | 51.490963 | 2,279 |
Iddo Genuth writes "Pratt & Whitney Rocketdyne of West Palm Beach, Florida has successfully completed the third round of its Common Extensible Cryogenic Engine (CECE) testing for the National Aeronautics and Space Administration (NASA). CECE is a new deep throttling engine designed to reduce thrust and allow a spacecra... | <urn:uuid:92f217a6-e8fb-4d92-9f97-3c97acc2593a> | 2.671875 | 191 | Comment Section | Science & Tech. | 24.910477 | 2,280 |
Learn more physics!
What would happen if... I have a round magnet with a hole in it. Then I put a magnet shaped like a nail, into the center of the other magnet? Would it float? If I spun the magnet around the inner magnet, would it spin the inner magnet?
Thank you very much.
- Matt K. Leiner (age 40)
South Lyon, MI
Th... | <urn:uuid:76b08934-3dc6-4aeb-b035-ec81ac1950d9> | 3.125 | 309 | Q&A Forum | Science & Tech. | 83.20671 | 2,281 |
Phylogeny of the Invertebrates
The tree below was redrawn from the information and cladograms of the Phylogeny Wing of the University of California Museum of Paleontology. The animal phyla represented have been selected for familiarity and to provide context for phyla often exhibited in aquaria and that might be seen a... | <urn:uuid:0f15a9b0-1a04-4b08-9255-f9f7b26d89ac> | 2.890625 | 1,166 | Structured Data | Science & Tech. | 28.209193 | 2,282 |
ScienceDaily (Aug. 5, 2012) It’s a longstanding doubt in biology: How do cells know when to swell by a dungeon cycle?
In elementary organisms such as yeast, cells order once they strech a specific size. However, last if this binds loyal for mammalian cells has been difficult, in partial since there has been no good pro... | <urn:uuid:caac93b9-91ce-4452-ba0b-9d4f85dd098c> | 3.109375 | 1,140 | News Article | Science & Tech. | 39.268458 | 2,283 |
Oil dispersant effects remain murky
As oil continues to churn from the bottom of the Gulf of Mexico, many questions remain about where the oil will go and how it will affect marine life.
Making those questions even tougher to answer are the controversial chemical dispersants that BP has used to break the oil into small... | <urn:uuid:ad5360a1-74d9-44eb-8bf1-56604a1c9e14> | 2.953125 | 1,329 | News Article | Science & Tech. | 51.08358 | 2,284 |
The Spectrum of Riemannium
Erbium and Eigenvalium
Among the spectra in Figure 1 is a series of 100 energy levels of an atomic nucleus, measured 30 years ago with great finesse by H. I. Liou and James Rainwater and their colleagues at Columbia University. The nucleus in question is that of the rare-earth element erbium-... | <urn:uuid:5e260d0c-d6c0-467b-8a76-1127e34a7cc4> | 3.578125 | 919 | Nonfiction Writing | Science & Tech. | 55.035935 | 2,285 |
The redshift (Z) and Early Universe Spectrometer (ZEUS) is a direct detection, submillimeter echelle grating spectrometer designed to study star formation in the Universe from about 2 billion years after the Big Bang to the present through spectroscopy of distant star forming galaxies. The sensitivity of ZEUS enables s... | <urn:uuid:a58549cc-9565-4bbb-a305-a5b4cf240eae> | 2.6875 | 2,954 | Knowledge Article | Science & Tech. | 51.9464 | 2,286 |
|Galaxies, Stars, and Dust|
Spiky stars and spooky shapes abound in
deep cosmic skyscape.
Its well-composed field of view covers
about 2 Full Moons on the
sky toward the constellation Pegasus.
Of course the brighter stars show diffraction spikes, the commonly
seen effect of internal
in reflecting telescopes, and lie
we... | <urn:uuid:553c8415-342d-4a60-930a-2156b4472a48> | 3.140625 | 237 | Content Listing | Science & Tech. | 46.169053 | 2,287 |
Divergent evolution occurs when related species develop unique traits due to different environments or selective pressures. A classic example of divergent evolution is the Galapagos finch which Darwin discovered that in different environments, the finches' beaks adapted differently. The individual Galapagos finches loo... | <urn:uuid:c5fbfb9a-3494-4d3f-becd-890591878bd1> | 3.84375 | 313 | Knowledge Article | Science & Tech. | 37.31182 | 2,288 |
Air-conditioned ants: The secret behind their vast underground cities... ventilation
They are known for their industrious nature. But the humble ant's sophisticated home-making skills has left some of the brightest scientific minds in awe of the tiny creatures.
Researchers have discovered the vast underground colonies ... | <urn:uuid:0c1694c8-6d04-4dae-bc56-f75f8f08481d> | 2.71875 | 484 | Truncated | Science & Tech. | 50.846248 | 2,289 |
The origin of species?
A recently discovered class of gene may help regulate embryonic development, control the differences between body tissues and even drive animal evolution
THE old saying that where there’s muck, there’s brass has never proved more true than in genetics. Once, and not so long ago, received wisdom w... | <urn:uuid:cb16aeed-400c-49af-94d4-b885904beaa3> | 3.609375 | 1,171 | News Article | Science & Tech. | 39.952839 | 2,290 |
The University of Tennessee, Knoxville, in partnership with Oak Ridge National Laboratory (ORNL) will play a key role in finding solutions to what the National Science Foundation (NSF) has deemed the "most important, demanding and urgent global problems of our time."
The two will team up to participate in NEON (Nationa... | <urn:uuid:51c4af01-64c0-4913-9f05-c3a146081915> | 3.28125 | 733 | News (Org.) | Science & Tech. | 32.258919 | 2,291 |
Andromeda Galaxy, cataloged as M31 and NGC 224, the closest large galaxy to the Milky Way and the only one visible to the naked eye in the Northern Hemisphere. It is also known as the Great Nebula in Andromeda. It is 2.2 million light-years away and is part of the Local Group of several galaxies that includes the Milky... | <urn:uuid:8a5c0509-b46a-4cad-a8c5-3f71fe47017a> | 3.609375 | 203 | Knowledge Article | Science & Tech. | 49.286571 | 2,292 |
New Mexico's Gila National Forest is a good natural laboratory for studying the effects of wildfire.
by Neil LaRubbio,
Nov 14, 2012
Controversial new studies question the conventional wisdom on Western ponderosa forests and the severity of their historic wildfires.
by Emily Guerin,
Sep 26, 2012
The backstory to Emily G... | <urn:uuid:aedd7621-9cad-4728-a9b6-827020b11f21> | 2.71875 | 409 | Content Listing | Science & Tech. | 31.0575 | 2,293 |
1. What is ASP.NET AJAX?
ASP.NET AJAX, mostly called AJAX, is a set of extensions of ASP.NET. It is developed by Microsoft to implement AJAX functionalities in Web applications. ASP.NET AJAX provides a set of components that enable the developers to develop applications that can update only a specified portion of data ... | <urn:uuid:e5aa2be3-f5c5-43c6-87a4-a92df97818de> | 2.953125 | 279 | Q&A Forum | Software Dev. | 48.747624 | 2,294 |
Since 2011, University of Nevada, Reno biologists are consistently finding large goldfish inhabiting Lake Tahoe, a species introduction biologists will investigate in May 2013. (Photo: courtesy of University of Nevada, Reno)
Emerson Marcus, Reno Gazette-Journal
RENO - Biologists are worried that Lake Tahoe's pristine b... | <urn:uuid:1583662a-a197-49a7-b489-8102f42f9ee2> | 3.109375 | 441 | News Article | Science & Tech. | 40.131095 | 2,295 |
The Gather Procedure takes an input vector that is distributed across all the processors and gathers it into another distributed vector or array according to an indirect index vector or array. No collisions are possible, since this call is effectively pulling values out of a distributed variable, and there is a differe... | <urn:uuid:34b94f2c-3aee-4c6c-8ddf-632c954bbfdb> | 3.09375 | 283 | Documentation | Software Dev. | 34.478718 | 2,296 |
XQuery: An XML Query Language Resources & References
XQuery 1.0: An XML Query Language
XML is a versatile markup language, capable of labeling the information content of diverse data sources including structured and semi-structured documents, relational databases, and object repositories. A query language that uses the... | <urn:uuid:dad5d85d-f00c-4d02-9a2c-a365110a2175> | 2.734375 | 2,619 | Documentation | Software Dev. | 50.878589 | 2,297 |
Discussion about math, puzzles, games and fun. Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °
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hypotenuse is 20 inches one of the legs are 16 inches what is the measure of the other leg. i got 12 but i dont think its right
is there anyone ... | <urn:uuid:54a5acf3-13c3-4238-a873-d55ffaea6881> | 3.015625 | 252 | Comment Section | Science & Tech. | 76.086938 | 2,298 |
I was thinking about the 90° angle between the x, y, and z-axis.
It is all so perfect. So I said you need two independent real
numbers (cooridinates) to describe a point in a plane. Then I
thought about putting the x and y axis at a 10° angle instead of
90°, and noticed you could still get to all the points on the plan... | <urn:uuid:d15ae821-475c-4685-ae49-06475635037e> | 3.046875 | 451 | Comment Section | Science & Tech. | 75.749203 | 2,299 |