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As Hurricane Irene rumbles through the Atlantic Ocean, it needs fuel to sustain itself. Warm water is the main fuel, and there is plenty of it right now, as there usually is this time of year.
The map above shows sea surface temperatures (SST) in the Atlantic Ocean, Gulf of Mexico, and the Caribbean Sea on August 23, 2... | <urn:uuid:f88848ae-e08c-4ef3-937b-0fde328edec2> | 3.0625 | 500 | Knowledge Article | Science & Tech. | 49.788909 |
common name: robber flies
scientific name: Asilidae (Insecta: Diptera: Asilidae)
Introduction - Distribution - Description - Biology - Behavior - Key to the Subfamilies of Florida Asilidae - Selected References
The robber flies are an abundant and diverse family (Asilidae) known for their predatory behavior. Asilidae d... | <urn:uuid:0dd3ca88-ba7a-45ca-bbf0-522ad5d3bada> | 3.484375 | 2,284 | Knowledge Article | Science & Tech. | 41.423629 |
In this class activity, students will analyze data on rainfall and dust levels in Africa in order to investigate two competing hypotheses about how climate affects human evolution. They will apply their understanding of orbital forcing factors and the use of proxy variables in order to develop a research plan they coul... | <urn:uuid:53502305-ba8b-4703-ad3b-ffaf2bae6af7> | 3.3125 | 98 | Truncated | Science & Tech. | 28.17628 |
variables in string.count
__peter__ at web.de
Fri Jun 4 08:54:23 CEST 2004
> Can you use variables in string.count or string.find? I tried, and
> IDLE gives me errors.
> Here's the code:
I assume you omitted
list = ["a", "b", "c"]
> while list:
> letter = raw_input("What letter? ")
Strings are immutable, i. e. they can... | <urn:uuid:e806b6b5-1612-484a-b184-dc736bb24b7e> | 3.359375 | 278 | Comment Section | Software Dev. | 69.153798 |
Endospores and Radiation
Country: United States
Date: November 2008
What properties of endospore make them resistant to UV radiation?
UV photons are not energetic enough to penetrate the spore coating to "hit"
the spores DNA. UV kills by damaging DNA causing mutations.
Ron Baker, Ph.D.
Click here to return to the Molec... | <urn:uuid:4ffb0bbd-85bd-404c-9d37-d69d31174410> | 2.953125 | 82 | Knowledge Article | Science & Tech. | 40.447207 |
This topic stresses mechanical energy, potential and kinetic, and also describes conversion between types of energy (while conserving the total amount), units, and the special position of heat.
Part of a high school course on astronomy, Newtonian mechanics and spaceflight
by David P. Stern
This lesson plan supplements:... | <urn:uuid:e0565b87-1ff5-4638-a5be-22ba84809edf> | 4.09375 | 2,018 | Tutorial | Science & Tech. | 67.928947 |
Previous posts in the series:
Part 9 of the original series focuses in on Constructor Injection, which is one method of doing Dependency Injection (the other is Setter Injection, which we’ll get to) The reason to use Constructor or Setter Injection is a bit subjective, but (to me) boils down to if you the paramters to ... | <urn:uuid:3a92e28c-345e-4a83-b345-4cd462eb16be> | 2.953125 | 289 | Personal Blog | Software Dev. | 55.582778 |
How old is your mummy?
Radiocarbon dating and the secrets it reveals
All living things, including us, contain carbon atoms. As long as we are alive we are constantly exchanging carbon atoms with our environment. We take in carbon atoms in our food and release them by exhaling carbon dioxide into the air. Some of these ... | <urn:uuid:dabd4fef-d161-447c-9c9f-dc0bc314a875> | 3.78125 | 981 | Knowledge Article | Science & Tech. | 58.652563 |
The diode as an energy-controlled, not a charge-controlled device.
The traditional theory of operation of the diode is, for me, one of the many casualities of advances in electromagnetic theory during the last 25 years.
Whilst at Motorola, Phoenix, in 1964, work on the problem of how to interconnect high-speed (one nan... | <urn:uuid:25239ccd-05c1-4373-ad00-d364bd38c42b> | 2.71875 | 1,816 | Nonfiction Writing | Science & Tech. | 56.019096 |
WHAT are you thinking about? Which memory are you reliving right now? You may think that only you can answer, but by combining brain scans with pattern-detection software, neuroscientists are prying open a window into the human mind.
In the last few years, patterns in brain activity have been used to successfully predi... | <urn:uuid:ba8a1479-7b58-44a9-a514-41424a1ef094> | 3.203125 | 202 | Truncated | Science & Tech. | 41.380909 |
A method of obtaining an indicatrix or a scattering diagram of the earth’s surface is developed. When we regard the earth’s surface as a kind of irregular surface, the indicatrix of scattered radiation is a way of effective representation of its surface roughness. The indicatrices of radiation over the sands of a seash... | <urn:uuid:1a08a333-4b66-400b-98fb-15b586e3797a> | 3.140625 | 191 | Academic Writing | Science & Tech. | 33.207956 |
Dolly the sheep was the first mammal to be successfully cloned from adult cells, by a team of researchers at the Roslin Institute in Edinburgh. Dolly had been cloned from a mammary gland (the organs that produce milk in mammals' breasts). Dolly was named after the singer Dolly Parton.
Sheep can reach an age of about 12... | <urn:uuid:6e59d159-8a31-44de-b7b2-0a6aaaa155a4> | 3.234375 | 291 | Knowledge Article | Science & Tech. | 49.940102 |
The advancing limit of Arctic ice, having in its train an endless procession of masses drifting down from the North, reaches the northern average limit of the Gulf Stream in the month of April, and having spread itself along this line both East and West of the 50th meridian of longitude, the ice disintegrates and rapid... | <urn:uuid:95cfdc3c-6784-4ffa-8135-1b08693eee52> | 3.796875 | 941 | Knowledge Article | Science & Tech. | 49.380024 |
Have you ever wondered what makes a bubble form? The secret to making bubbles is surface tension. Adding soap (such as the kind you use to wash dishes in the sink) to water changes the surface tension of that water, and this creates a great solution to make bubbles from.
If you try to make bubbles using normal water, y... | <urn:uuid:6ea36f4e-bd41-43c2-b2c0-1eea78411ac2> | 3.984375 | 1,068 | Tutorial | Science & Tech. | 56.978401 |
Cerium, Ce, is a metallic element, which is found in the lanthanide
series of inner transition metals in
Group IIIa of the
- Atomic Number : 58
- Relative Atomic Mass : 140.12
- Melting Point : 800 degC
- Boiling Point : 3000 degC
- Relative Density : 6.7
Cerium was discovered by M H Klaproth in 1803AD and Berzelius(18... | <urn:uuid:bbb84823-3bcd-4057-aea3-a7e21cfe694d> | 3.84375 | 305 | Knowledge Article | Science & Tech. | 53.860294 |
Marcasite (FeS2) has the same formula as pyrite but a different structure. The term "marcasite" is often used to refer to pyrite as a gem stone, and this usage actually predates the mineralogical usage of the name "marcasite." Marcasite is notorious for crumbling in collections because the sulfur reacts with atmospheri... | <urn:uuid:75b7bce6-4678-4603-b202-1d6a63ff485b> | 3.046875 | 268 | Knowledge Article | Science & Tech. | 44.030251 |
An artist's depiction of what the scene must have looked like when the NASA’s Galileo spacecraft approached Amalthea, moon of Jupiter.
Click on image for full size
Courtesy of NASA
A Jupiter moon that has more holes than Swiss cheese!
News story originally written on December 11, 2002
Amalthea is a small reddish moon o... | <urn:uuid:178bcfe2-208d-4be0-82f9-935eb2071a4f> | 3.328125 | 542 | Content Listing | Science & Tech. | 62.346364 |
It’s been a month since the Tohuku earthquake and tsunami rattled then swamped northern Honshu, and Japan continues to be rattled by sizeable aftershocks. A magnitude 7.1 shock last Thursday initially set off further tsunami alerts but the rupture turned out be 50 km beneath the seafloor, too deep to pose a significant... | <urn:uuid:794a3026-a07e-407a-815f-d192fe3202ef> | 3.03125 | 619 | Personal Blog | Science & Tech. | 42.21936 |
This module seeks to explain the bonding of the 4 Hydrogen atoms to the 1 Carbon atom in the molecule CH4 (methane),using the molecular orbital theory. Molecular orbital theory describes orbitals that are formed with the interaction of the atomic orbitals of given atoms. These orbitals are spread out over the entire mo... | <urn:uuid:625bad12-40a5-4ff5-ac9d-4a7979542c12> | 2.984375 | 523 | Documentation | Science & Tech. | 52.448636 |
What's a kilowatt?
A kilowatt, or kW for short, is a unit of power that measures the rate of energy conversion. The average annual electrical energy consumption of a household in the United States is about 8,900 kilowatt-hours.
"Watt" does this mean for the environment? Every year, a 10 kW solar or wind system is reduc... | <urn:uuid:edfec0ab-b560-4574-b39a-c12371c33098> | 3.140625 | 112 | Knowledge Article | Science & Tech. | 56.164118 |
Quiz: What You Don't Know About Energy
Photograph by Michael Melford
How much do you know about the power that keeps you cool in summer, cooks your meals every evening, and illuminates this computer screen?
How much energy from a coal power plant makes it to customers as electricity?
- A quarter
- A third
About a third... | <urn:uuid:1a6fa46b-57a7-425b-b1a7-b0df5778b9e0> | 3.46875 | 1,013 | Q&A Forum | Science & Tech. | 50.500933 |
Termites' crystal backpacks help them go out with bang
When defending their colony, some termites "explode", releasing chemicals that injure intruders.
A previously unknown crystal structure has been discovered that raises the toxicity of their chemical weapons.
As worker termites grow older, they become less able to p... | <urn:uuid:26401631-0907-4a37-b975-95f6f0be0814> | 3.296875 | 141 | Comment Section | Science & Tech. | 42.159296 |
Science Fair Project Encyclopedia
Inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit. It is the angular distance of the orbital plane from the plane of reference (usually the primary's equator or the ecliptic), normally stated in degrees.
In the solar system, the ... | <urn:uuid:09fbf52e-2e78-4be8-b76e-f44283b28b34> | 3.9375 | 443 | Knowledge Article | Science & Tech. | 31.915528 |
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.
...which is defined at its base by the discontinuity in seismic wave behaviour, as cited above.) They ride on a weak, perhaps partially molten, la... | <urn:uuid:239cb42a-7c70-4c14-9e92-05a4ee64de71> | 3.921875 | 137 | Truncated | Science & Tech. | 50.165878 |
Contact: Marie Guma-Diaz
University of Miami
Caption: Certain kinds of male birds gather into small clusters of land called leks to perform their courtship dances, and according to science, who they choose to associate with matters. A new study by University of Miami Evolutionary Biologist J. Albert Uy and his collabor... | <urn:uuid:0e45d146-216a-40c7-87b0-6420c038bf90> | 3.53125 | 181 | Truncated | Science & Tech. | 25.4405 |
Approximately 64 acres of the Park are wooded, of which approximately 46 acres are young deciduous forest (less than 50 years old). The IMA’s Horticulture Department has collected tree and understory canopy data with the purpose of understanding the benefits of the Park within its urban environment.
In recent years the... | <urn:uuid:bb34cb41-1eee-469a-ab48-4c36af407fa8> | 3 | 272 | Knowledge Article | Science & Tech. | 26.142955 |
Technology alone won't help the world turn away from fossil fuel-based energy sources, says University of Oregon sociologist Richard York. In a newly published paper, York argues for a shift in political and economic policies to embrace the concept that continued growth in energy consumption is not sustainable.
Many na... | <urn:uuid:afeb7bd2-653b-4517-8b2d-a660cf96c62b> | 3.1875 | 1,604 | Content Listing | Science & Tech. | 40.352889 |
Can you imagine being able to witness the start of the enzymatic process that ensures oxygen is carried throughout your blood stream? Can you fathom being able to see the first structural movement of a protein in a timescale of a hundred trillionths of a second? Michael Fayer can. And because this seemingly mild manner... | <urn:uuid:83f6e7fa-0be0-4ade-a861-5da068a6346d> | 3.515625 | 724 | Knowledge Article | Science & Tech. | 30.033553 |
respectively get or set a unique 32-bit identifier for the current machine.
The 32-bit identifier is intended to be unique among all Unix systems in
This normally resembles the Internet address for the local
machine, as returned by
and thus usually never needs to be set.
call is restricted to the superuser.
returns the... | <urn:uuid:26e12b27-fa62-4a9e-bd19-302056af8842> | 2.9375 | 284 | Documentation | Software Dev. | 58.4075 |
Real leaves are natural energy factories that can split water molecules and create hydrogen ions. Scientists have long tried to copy the molecules involved in creating hydrogen, but a Chinese team took a different tack by creating an artificial structure based on natural leaves as templates. Early tests have shown that... | <urn:uuid:0e327f57-0ad1-4db9-9391-1a17f386c3cc> | 3.46875 | 134 | Content Listing | Science & Tech. | 40.208119 |
From W3C Wiki
A "Node ID," is a way to conveniently identify nodes within the confines of a single file.
Outside of the file, the nodeID doesn't mean anything; you just see BlankNodes. Within the file, you can refer back to the node with a simple name.
You create a nodeID with something like the following form:
You ref... | <urn:uuid:7e0183ec-50ab-46c8-90ed-5c5095872b8c> | 2.703125 | 356 | Knowledge Article | Software Dev. | 76.056634 |
The above plot is average annual temperature for the selected station. Switch stations by using the map below. In grey is historical data from the Global Historical Climatology Network (GHCN). The post-1900 trend is in black. GHCN includes approximately 6,000 temperature stations across the globe, and is the primary so... | <urn:uuid:272fca0a-524b-4acf-8f07-54320ae355f2> | 3.03125 | 356 | Knowledge Article | Science & Tech. | 53.874241 |
Lectures - Monday and Wednesday, 11:00 AM - 12:15 PM
Lab - Tuesday, 4:10 PM -7 PM
Last week you explored the geographical variations of Earth's albedo, reflected solar radiation, and Earth's radiation received by satellites from cloud free areas of the Earth's surface. The patterns you observed were controlled by the c... | <urn:uuid:68e4f164-2234-4021-9240-9e1892abd3f2> | 3.65625 | 2,156 | Tutorial | Science & Tech. | 47.572116 |
The Convention on the Prohibition of Military or Any Other Hostile Use of Environmental Modification Techniques (Geneva: 18 May 1977, Entered into force: 5 October 1978) prohibits "widespread, long-lasting or severe effects as the means of destruction, damage or injury". However it has been argued that this permits "lo... | <urn:uuid:b3a24cda-8ca4-46f6-a1e5-5ea43a6eb2cf> | 3.3125 | 387 | Knowledge Article | Science & Tech. | 31.683288 |
When we get the signal that we hit the atmosphere, we're already on the surface... yet we don't know in what condition. So you are sitting there going "our rover right now is on the surface of Mars... dead or alive." And then you live the next seven minutes living in this delayed time.
It's like the NBC delay, but wors... | <urn:uuid:347b6a64-063c-48a9-8526-fa052ade14dc> | 2.890625 | 359 | Personal Blog | Science & Tech. | 64.223064 |
Investigate this balance which is marked in halves. If you had a
weight on the left-hand 7, where could you hang two weights on the
right to make it balance?
Investigate what happens when you add house numbers along a street
in different ways.
48 is called an abundant number because it is less than the sum of
its facto... | <urn:uuid:8138d692-9e71-4f45-a7df-4f30ebe6d373> | 4.25 | 1,656 | Content Listing | Science & Tech. | 75.523 |
Figure 1. Two records of climate change over the last glacial cycle. The oxygen isotopes of the ocean reflect both sea level and temperature changes. The oxygen isotopes of Greenland ice reflect the temperature of precipitation above the core site.
Paleoclimate and Deep-Sea Corals
California Institute of Technology
Whe... | <urn:uuid:0c4d5a05-25d8-4007-a90a-53c8c4bcaadc> | 3.859375 | 1,571 | Academic Writing | Science & Tech. | 44.595967 |
Question: How does a stirling generator work?
Answer: To understand a Stirling generator you have to understand how a Stirling engine works. Essentially a Stirling engine operates based on a closed chamber containing a gas (usually just air) that is heated at one end and cooled at the other. When a gas heats or cools i... | <urn:uuid:5e4bd3f4-0778-4674-bae4-818e87aa2cf1> | 3.859375 | 357 | Q&A Forum | Science & Tech. | 49.096127 |
Melting Point, the temperature at which a substance passes from the solid to the liquid state. Each chemical element has a specific melting point. The melting points of the elements range from —453.5 F. (-269.7 C.) for helium to 6,740.6 F. (3,727 C.) for carbon (graphite). Chemical compounds also have specific melting ... | <urn:uuid:fa397d33-655e-473d-afc8-731404fd4a1b> | 4.34375 | 378 | Knowledge Article | Science & Tech. | 59.145887 |
Distinction within Microbial as well as Eukaryotic Transcribing.
Distinction within Microbial as well as Eukaryotic Transcribing
Transcribing happens in most microorganisms; nevertheless you will find different facets which happen in between germs as well as eukaryotes. Within germs the actual enzyme RNA polymerase beg... | <urn:uuid:f1c60ba8-c285-4ae1-900b-25f208747f8c> | 2.84375 | 720 | Knowledge Article | Science & Tech. | 30.50787 |
By David L. Brown
A couple of years ago I privately predicted that the Arctic polar ice cap would melt a lot quicker than scientists were willing to predict. I noted the trend and projected ice loss using common sense, and by factoring in the effect of high-albedo ice and snow being replaced by low-albedo open sea wate... | <urn:uuid:4c81b6ac-7cba-46fd-b8e5-590bbda9f0af> | 3.265625 | 1,033 | Personal Blog | Science & Tech. | 46.510548 |
According to a recent paper, human actions may have caused Earth's climate to warm much earlier than previously expected. In an article to be published in Geophysical Research Letters, and widely reported in the media, around 15,000 years ago, early hunters were a major factor in driving mammoths to extinction. Suppose... | <urn:uuid:805cc394-3ee5-45e0-bb7d-37876beed0df> | 4 | 2,322 | Personal Blog | Science & Tech. | 39.279707 |
Snapshot Issue 48 October 2008
One of Natureís wonders is to produce light. Fireflies flutter and flicker in the night while other creatures are flashing light in the depths of the ocean. Brief and relatively intense flashes are used by some to ward off predators, catch prey or even seduce a future partner. This fascin... | <urn:uuid:269319f1-f0ff-4eaa-8269-3d9666427dad> | 3.328125 | 515 | Knowledge Article | Science & Tech. | 50.682714 |
Common Lisp the Language, 2nd Edition
Some type specifier lists denote specializations of data types named by symbols. These specializations may be reflected by more efficient representations in the underlying implementation. As an example, consider the type (array short-float). Implementation A may choose to provide a... | <urn:uuid:ab31bcf0-147a-42af-8c7c-60f5cb2866b1> | 3.3125 | 2,508 | Documentation | Software Dev. | 41.41698 |
|In the center of star-forming region 30 Doradus lies a huge cluster of the largest, hottest, most massive stars known. These stars, known collectively as star cluster R136, were captured above in visible light by the newly installed Wide Field Camera peering though the recently refurbished Hubble Space Telescope. Gas ... | <urn:uuid:b03bb948-6b98-48fe-9c40-7c2968bb9a5d> | 3.546875 | 173 | Truncated | Science & Tech. | 45.24878 |
Introduction to Stars, Galaxies, & the Universe
Prof. Richard Pogge, MTWThF 9:30
(Credit: Hubble Space Telescope)
Unit 3: "Death & Transfiguration":
The Endpoints of Stellar Evolution
We continue our exploration of Stellar Evolution that we began in Unit 2 by turning to the question of how stars die.
Massive stars end ... | <urn:uuid:96dc1dc9-bc1e-4d04-8937-c89999c2b901> | 3.828125 | 441 | Content Listing | Science & Tech. | 42.288522 |
On April 19th, 2012, Climate Central's Ben Strauss testified before the Senate committee on Energy and Natural Resources on the impact of sea level rise.
Sample coverage of the national report called Surging Seas, which has recalculated the risk of flooding to coastal communities across America.
As the land loses its s... | <urn:uuid:08717bb4-d6e3-49d9-8ced-4a9482f487bf> | 3 | 251 | Content Listing | Science & Tech. | 52.436729 |
For ornithologists, conservationists, and backyard birders, it would be a dream come true. After more than 60 years of presumed extinction, the ivory-billed woodpecker was reported spotted by expert birders in a dense Arkansas swamp. It appeared that "the Grail Bird,— a ghostly symbol of one of America's ravaged natura... | <urn:uuid:95e4fbc2-7ef4-47d5-b04a-2dac374993ed> | 2.765625 | 474 | Nonfiction Writing | Science & Tech. | 44.686182 |
All > Science > Weather
- A watch is used when the risk of a hazardous weather or hydrologic event has increased significantly, but its occurrence, location, and/or timing is still uncertain. It is intended to provide enough lead time so that those who need to set their plans in motion can do so.
NOAA National Weather ... | <urn:uuid:219dd61a-59e0-4d10-a926-7ec4344daaf6> | 3.15625 | 123 | Structured Data | Science & Tech. | 22.885478 |
Astronomers have discovered the largest known structure in the universe, a clump of active galactic cores that stretches 4 billion light-years from end to end.
The structure is a large quasar group (LQG), a collection of extremely luminous galactic nuclei powered by supermassive central black holes. This particular gro... | <urn:uuid:4fae13a3-4493-4a12-957d-868fb72a870e> | 3.75 | 281 | Comment Section | Science & Tech. | 57.09313 |
Figure 7.8: Simplified principal feedback loops active in El Niño- Southern Oscillation (ENSO). The fast loop (right) gives rise to an instability responsible for the development of an El Niño, the slow loop (left) tends to dampen and reverse the anomalies, so that together, these processes excite oscillations.
The str... | <urn:uuid:06774405-c13b-40bd-a1e5-dc2b8a9a5823> | 3.890625 | 2,249 | Academic Writing | Science & Tech. | 22.92836 |
Length: males 15-20 mm, females 18-27 mm
Tipula ultima is on the wing in September and October. Its range extends from Saskatchewan to Newfoundland, south to Florida and Louisiana, and west to Oklahoma and Wyoming.
Taber (2009) suggests that this species is associated with dying bracken ferns (Pteridium aquilinum), and... | <urn:uuid:8293bdde-cf11-4f41-82ee-959285ca78ae> | 2.828125 | 400 | Knowledge Article | Science & Tech. | 56.39212 |
Potential Problems When Low and High Voltage Meet
This is especially true for the two methods I focus on, i.e. Capillary Electrophoresis (CE) and Electrochemical Detection (ECD). Each of them simply performs theoretically much better as a miniaturised system. To understand better, where the problem lays, please let me ... | <urn:uuid:8256865a-4985-4169-9438-b4ea2d7eacba> | 2.75 | 871 | Academic Writing | Science & Tech. | 37.91192 |
A Boeing Delta 2 rocket carrying the first MER spacecraft, named Spirit, lifts off from Cape Canaveral in Florida on June 10, 2003.
Click on image for full size
Image courtesy NASA.
Mars Exploration Rovers Launched
News story originally written on July 10, 2003
Exploration Rovers (MER) mission is now underway. Twin rob... | <urn:uuid:a1263b31-9605-45d4-b651-9d90cf09de57> | 3.234375 | 613 | Content Listing | Science & Tech. | 55.459583 |
Please can you explain what Parameters are?
In simple terms, the parameter of a curve defines a 0-n floating point value indicating point positions on a curve.
Lets use a polyline as an example of what to expect from a parameter value.
If we have a polyline which has 5 points, and each of the 4 lines are different in l... | <urn:uuid:7ca502e0-30e8-47d4-832f-09b141619c60> | 2.890625 | 358 | Q&A Forum | Software Dev. | 42.684167 |
From my basic understanding of White Holes they are said to be the other end of a black hole right? A black hole sucks matter in and spews it out into another universe via a wormhole. I believe that idea was thought up by Schwarzschild? And the wormhole joining the two separate Universes is known as the Einstein-Rosen ... | <urn:uuid:78cceaec-3e58-4d7d-9add-d221f77d33ba> | 2.765625 | 156 | Comment Section | Science & Tech. | 55.357631 |
This Demonstration simulates a random decay/degradation process. It could represent the decay of radioactive nuclei or the degradation of a therapeutic drug in the human body. Individual decays or degradation events are visualized via the thin cyan lines. The red line is the mean of all the events. The blue line is a s... | <urn:uuid:0ae836b0-c098-48d1-b66a-8e50185c7a30> | 2.6875 | 134 | Knowledge Article | Science & Tech. | 26.992059 |
<architecture> A virtual machine implementation approach, used to speed up execution of byte-code programs. To execute a program unit such as a method or a function, the virtual machine compiles its bytecodes into (hardware) machine code. The translated code is also placed in a cache, so that next time that unit's mach... | <urn:uuid:a4293ef1-f1a5-41b1-8ed4-3c8a7bc17a70> | 2.953125 | 212 | Knowledge Article | Software Dev. | 26.922333 |
Genus: Colony of 4 or 16 cells arranged nearly parallel, within a gelatinous sheath, planktonic;
cell body elongated spindle-shaped, slightly curved; a single chloroplast plate-like, with a pyrenoid
(Guide book to the "Photomicrographs of the Freshwater Algae", 1998).
Species: Colonies of 4, 8 or 16 cells embedded in a... | <urn:uuid:c33dc365-f53d-4baf-9ffc-c373f35e80d7> | 2.953125 | 169 | Knowledge Article | Science & Tech. | 50.879442 |
People hate aphids
because they’re incredibly successful pests. Aphids love our vegetable gardens and our flower beds. They hang out under leaves, safe from the sun, and drain a plant’s energy by drinking the sap. They can also transmit all kinds of viruses. Honeydew, or an aphid’s sugary excrement, coats the leaves an... | <urn:uuid:54f7f23b-50b4-48ab-8c52-7b52be82cf16> | 3.609375 | 1,045 | Knowledge Article | Science & Tech. | 51.007222 |
Users will produce and analyze graphs showing water temperature, salinity, density, and chlorophyll concentration for 2004 at four buoy locations in the Gulf of Maine. The multi-year graph of chlorophyll concentration below serves to illustrate the distinct fall and spring phytoplankton blooms that occur there each yea... | <urn:uuid:b2ab7279-0f31-4c9d-9e99-34dfb758653c> | 3.75 | 435 | Tutorial | Science & Tech. | 20.425031 |
This tree diagram shows the relationships between several groups of organisms.
The root of the current tree connects the organisms featured in this tree to their containing group and the rest of the Tree of Life. The basal branching point in the tree represents the ancestor of the other groups in the tree. This ancesto... | <urn:uuid:37dc1321-50fb-4362-9e19-e9a98cc1cea6> | 3.21875 | 1,678 | Knowledge Article | Science & Tech. | 50.56697 |
PARTITION TABLE — Specifies that a table is partitioned and which is the partitioning column.
PARTITION TABLE table-name ON COLUMN column-name
Partitioning a table specifies that different records are stored in different unique partitions, based on the value of the specified column. The table table-name and column colu... | <urn:uuid:d7cd221e-f8e0-48b1-97c7-5ba150c40f0a> | 3.03125 | 140 | Documentation | Software Dev. | 33.727667 |
Science Fair Project Encyclopedia
|- style="text-align:center;" ! style="background: pink;" | Binomial name |- style="text-align:center;" |Globicephala melas
| style="text-align:center;" |
Long-finned Pilot Whale range A Pilot Whale is one of two species of cetacean in the genus Globicephala. The genus is part of the o... | <urn:uuid:c47a6e67-1e41-46dd-9249-4fbb5c2b89a3> | 3.515625 | 1,134 | Knowledge Article | Science & Tech. | 52.535293 |
DefinitionThe class Compare_to_less<F> is used to convert a functor which
returns a Comparison_result to a predicate (returning bool) : it
will return true iff the return value of F is SMALLER.
The class is used in conjunction with the compare_to_less
function; see there for an explanation on how exactly the functors
t... | <urn:uuid:bf3f4c4f-cf57-4448-952e-2d8f9bb0b957> | 3.375 | 88 | Documentation | Software Dev. | 28.854286 |
Algae grows on a particular rock at the bed of a lake. The
volume V of the algae on this rock is the square root of
the surface area of the rock which is covered by water. The
surface area S covered by water, in turn, can be expressed
through the function
S(R) =50R / R + 1
where R is the amount of rain (in mm) which fa... | <urn:uuid:329b47ae-e0aa-4b74-9d13-528cbbec21fc> | 3.671875 | 139 | Q&A Forum | Science & Tech. | 80.76417 |
A lightyear is the distance that light travels in one year. Since there are various definitions for the length of a year, there are correspondingly slightly different values for a lightyear. One lightyear corresponds to about 9.461e15 m, 5.879e12 mi, or 63239.7 AU, or 0.3066 pc.
The metre is a unit of length in the met... | <urn:uuid:7e193096-18c0-4bc7-bda5-170d9d7a9d13> | 3.484375 | 149 | Knowledge Article | Science & Tech. | 75.243455 |
Unknown triangles 2: cosine rule
Added by Kadie Armstrong on Feb 6, 2008
A graphic showing three different triangles, two with one unidentified side length and one with an unidentified angle. Ask pupils to use the cosine rule to obtain the unknown values using the information given.
This item is part of Absorb Mathemat... | <urn:uuid:9fa6f028-4930-4122-b16b-ad832debaae1> | 3.859375 | 283 | Content Listing | Science & Tech. | 49.997955 |
As multiple researchers continue their efforts to make micro-robotic flying insects, Harvard's Robert Wood has made strides in self-assembling systems with the robobee above. Inspired by his child's pop-up books, Wood's device starts flat on a scaffold. More than 100 hinges enable the 3D structure to "pop up" into the ... | <urn:uuid:a43fc153-9871-484e-8bba-2976d5dbc24b> | 3.703125 | 1,787 | Content Listing | Science & Tech. | 41.900181 |
Date: May 2004
Creator: Conder, Jason M.
Description: TNT (2,4,6-trinitrotoluene) is a persistent contaminant at many military installations and poses a threat to aquatic ecosystems. Data from environmental fate and toxicity studies with TNT revealed that sediment toxicity test procedures required modification to accur... | <urn:uuid:16b91c42-97e4-47ae-8c3a-c7c53eb7842e> | 2.75 | 376 | Academic Writing | Science & Tech. | 34.357695 |
Research projects waste millions or billions of euros, so is it conceivable and possible for amateurs to operate serious scientific research in their garage or at their home desk?
Can you imagine that individual amateur scientists or small groups of people, bringing together the fun of science, may create new findings ... | <urn:uuid:843190f4-4bd0-4f79-8a82-0302d5bcf05a> | 2.765625 | 512 | Personal Blog | Science & Tech. | 28.895301 |
Typical Math Courses of Study
See Below For Grade by Grade Goals
Although mathematics curricula will vary from state to state and country to country, you'll find that this list provides the basic concepts that are addressed and required for each grade. The concepts have been divided by topic and grade for easy navigati... | <urn:uuid:b84d1a64-46bc-48ee-a08e-430bfecd77f5> | 3.515625 | 267 | Content Listing | Science & Tech. | 64.681395 |
Chippendales over dose
the Lion has always been fascinated by the Chippendales and their way of living.
Chippendales natural habitat is the Norwegian Fiord's, there they live in herds of approximate 15 individuals. As it is almost impossible to survive in the harsh conditions of the Fiord's, the lion decided to bring h... | <urn:uuid:e7c12739-1ad5-494e-8e40-b2775545f686> | 2.84375 | 355 | Personal Blog | Science & Tech. | 54.152879 |
Conserving an Ozark Cave
Tumbling Creek Cavesnail Working Group brought together landowners and scientists to determine what had happened. We concluded that sediment from surface erosion was the most likely factor affecting the cavesnail population.
Twenty to 30 years ago, many forested areas in Missouri were cleared t... | <urn:uuid:fdab7e2b-cfb2-49fa-8fd6-d3e04a8d1285> | 4 | 530 | Knowledge Article | Science & Tech. | 37.672696 |
Laser at Magurele – funded project record worth 293 million euros – will be 1,000 times more powerful than the most powerful laser in the world that now exists. If the project succeeds, over decades, a laser can do the job a giant particle accelerator. The Geneva has a diameter of 27 kilometers. The laser will fit in a... | <urn:uuid:ae8fb143-3504-4666-af7a-49869f02232e> | 3.015625 | 1,782 | Knowledge Article | Science & Tech. | 31.509134 |
Questions on Anti-matter
I am very interested in anti-matter. How is it stored, what are its p
properties, charges, etc. Are there actual elements made completely of a
anti-matter, or is is just another state of matter?
Anti-matter is just like ordinary matter (same masses of all the
particles, same kinds of nuclei and... | <urn:uuid:bea7c07c-810e-4dcb-b1ae-2edf05efa6ff> | 2.875 | 315 | Q&A Forum | Science & Tech. | 32.037073 |
Mentor: Dr. Neal Williams
In winter of 2000-2001, the College built a water catchment pond behind Rhoads Hall to retain runoff water from local-area drainage systems as well as from the College grounds. This pond has three inlets, one from the Shipley School and nearby area, one from a storm drain on Wyndon Avenue and ... | <urn:uuid:1d721f1d-3b15-4f41-b278-f732efb4df73> | 2.9375 | 506 | Academic Writing | Science & Tech. | 34.892198 |
Stars live for a very long time compared to human lifetimes. Your great, great grandparents saw the same stars as you will see tonight (if it's clear). Our lifetimes are measured in years. Star lifetimes are measured in millions of years. Even though star timescales are enormous, it is possible to know how stars are bo... | <urn:uuid:db3c9613-e223-431f-98e9-93064c428a75> | 3.8125 | 143 | Truncated | Science & Tech. | 63.029569 |
6.2 HTML and coding
6.2a HTML and XHTML
The HyperText Markup Language (HTML) is designed for the presentation of information on the World Wide Web, using a Web browser. More...
6.2b Browser compatibility
The Web page must be compatible with the most recent and penultimate versions of common browsers. More...
6.2c New w... | <urn:uuid:41eac6a0-5278-4e02-91fb-670832f3d928> | 3.171875 | 146 | Content Listing | Software Dev. | 79.711621 |
A large body of air having similar horizontal temperature and moisture characteristics.
A small, fast-moving low-pressure system that forms in western Canada and travels southeastward into the United States. These storms, which generally bring little precipitation, generally precede an Arctic air mass.
Describes the mo... | <urn:uuid:4c5f2c04-826c-4515-a624-544ffb51a6bf> | 3.640625 | 2,498 | Structured Data | Science & Tech. | 44.33158 |
|Catching Heat Waves||
Red tail hawks and ravens soar effortlessly in the warm afternoon air of California's Mojave Desert.
Seeking to take advantage of rising plumes of warm air called thermals, the same phenomenon that allows birds to lazily glide for long periods of time, engineers at NASA's Dryden Flight Research C... | <urn:uuid:ea781084-83a6-4ed5-b03a-53e0e165a695> | 3.484375 | 563 | Knowledge Article | Science & Tech. | 30.849343 |
A HOT cup of tea and a standard piece of laboratory equipment could replace more exotic attempts to build a quantum computer.
Neil Gershenfeld at the Massachusetts Institute of Technology and Isaac Chuang of the University of California at Santa Barbara outline their scheme in this week's
In a hypothetical quantum comp... | <urn:uuid:8d6d5f76-99fc-4a9c-9520-40a811bd9f3e> | 3.71875 | 163 | Truncated | Science & Tech. | 41.813542 |
Birds survived the mass extinction that wiped out the dinosaurs because of their larger brains.
The Cretaceous–Tertiary mass extinction 65 million years ago may have wiped out the dinosaurs, but those that survived – the ancestors of today’s birds – may have done so because of their bird brains.
Analysis of computer to... | <urn:uuid:a9675fb7-81e8-4df2-b22c-8029f8bb6acd> | 4.0625 | 968 | Knowledge Article | Science & Tech. | 40.03875 |
When Ocypus olens is threatened it produces an unpleasant smelling chemical defence from a pair of exocrine glands found at the terminal segment (8th tergite) of the abdomen.
It can also excrete fecal fluid from its anus as well as foul smelling fluid from its mouth.
Ocypus olens reproduction takes place in the autumn.... | <urn:uuid:06856f7b-7d90-4b81-a580-87dc36d82dff> | 3.421875 | 231 | Knowledge Article | Science & Tech. | 55.903032 |
In this section, you will learn how to implement the close button of any frame or window in java application. By default the close button of the frame is not in working state. If you click on the close button of the frame or window that will be cancelled automatically. The close button of the frame has to be set for th... | <urn:uuid:7f366e48-e090-47e0-bf33-2df4fd58e786> | 3.40625 | 295 | Documentation | Software Dev. | 53.031411 |
Ionizing radiation is a type of particle radiation in which an individual particle (for example, a photon, electron, or helium nucleus) carries enough energy to ionize an atom or molecule (that is, ... > more
Weapon of mass destruction (WMD) is a term used to describe a munition with the capacity to indiscriminately ki... | <urn:uuid:216afb6b-bfdf-496c-9fd9-f9c5bc8ed536> | 3.28125 | 326 | Content Listing | Science & Tech. | 46.2075 |
In the 1980s one of us (Ramachandran) and our colleague Stuart M. Anstis developed an apparent-motion display called the Bistable Quartet (d). In this illusion, two dots are flashed simultaneously (frame 1 in d) on two corners of an imaginary square and then switched off and replaced by two identical dots on the remain... | <urn:uuid:30a43a12-8ac8-4559-8980-275e64f2b209> | 3.484375 | 1,043 | Academic Writing | Science & Tech. | 41.829267 |
The New Student's Reference Work/New Stars
|←New South Wales||The New Student's Reference Work (1914)
|New Year's Day→|
|See also Nova on Wikipedia, and the disclaimer.|
New Stars, sometimes called temporary stars, are bodies which suddenly make their appearance in the heavens, rise rapidly to their full brightness, an... | <urn:uuid:17ed41c5-9483-4eb7-bdbd-2b5294a43963> | 3.71875 | 465 | Knowledge Article | Science & Tech. | 49.030854 |
The study of distant galaxies is empirically demanding - not surprisingly, as these galaxies are very faint.
Of course there are a variety of motivations to observe and perhaps understand distant "units of the Universe". We would like to detail the present-day "lumpiness" of the Cosmos and its evolution from a very smo... | <urn:uuid:4d4e96f2-d485-4040-8d74-d45ad76a8405> | 2.71875 | 1,036 | Academic Writing | Science & Tech. | 52.724 |
As scientists unveil artificial organs and prosthetics to improve the function of our hearts, kidneys, hands, and even eyes, it's easy to gloss over these devices' Achilles' heel: power.
Even building devices that run on very low power, such as pacemakers, tend to require additional invasive surgeries just to replace t... | <urn:uuid:58221916-4ff4-4b0b-87f5-7b804fe2fcb9> | 3.046875 | 160 | Truncated | Science & Tech. | 31.968636 |
June 02, 2011
Tambopata rainforest in Peru as mapped by CAO.
Unveiled today at the Hiller Aviation Museum in San Carlos, California by Greg Asner of the Carnegie Institution's Department of Global Ecology at Stanford University, the newest version of the Carnegie Airborne Observatory (CAO) will offer powerful insights ... | <urn:uuid:16c5ec60-b6e6-4af8-9375-1b86d35d7353> | 3.484375 | 950 | Content Listing | Science & Tech. | 26.61581 |
Arthropod acoustic communication is a primary focus at the Patek Lab. Here you can find our acoustically oriented research projects along with sounds and video of spiny lobsters (Palinuridae) and mantis shrimp (Stomatopoda).
New Article In JASA
Below is the abstract for our most recent article in the Journal of the Aco... | <urn:uuid:9c74c251-3fd5-4bb4-b988-f2bea16adc3d> | 2.84375 | 366 | Academic Writing | Science & Tech. | 22.824458 |
"Houston, Tranquility Base here. The Eagle has landed." On July 20, 1969, the Eagle landing module became the first manned spacecraft to land on the moon. The crew of Neil Armstrong and Edwin "Buzz" Aldrin soon became the first humans to explore the dusty, gray surface.
The success of NASA's Apollo 11 lunar mission dep... | <urn:uuid:beb3af6d-c842-42a7-be9a-aff34f8ba1f2> | 4.03125 | 801 | Knowledge Article | Science & Tech. | 56.58359 |
Gibbs Free Energy and Pressure, Chemical Potential, Fugacity
The Gibbs free energy depends on pressure as well as on temperature. The pressure dependence of the Gibbs free energy in a closed system is given by the combined first and second laws and the definition of Gibbs free energy as,
If we hold temperature constant... | <urn:uuid:0ac1b2d7-209d-4e9d-83d0-28bc00d32b57> | 3.53125 | 1,581 | Tutorial | Science & Tech. | 58.49381 |
Currently iam learning Threads topic from Kathy Sierra.
I am trying to write a typical producer-consumer code that makes use of the join() method of Thread.
This is what i want to accomplish :
1> There will be 3 threads Thread_A, Thread_B and Thread_C.
2> Thread_A's job is to continuously take input from the User from ... | <urn:uuid:09ffe94d-e8c6-44f3-bb1e-bf7aeabd8196> | 2.78125 | 425 | Q&A Forum | Software Dev. | 78.8095 |
[N] 2005 Hongshanornis longicresta
Zhonghe Zhou and Fucheng Zhang. (2005). Discovery of an ornithurine bird and its implication for Early Cretaceous avian radiation. Proc. Natl. Acad. Sci. USA. Published online before print December 12, 2005.
Abstract: \\\\\\\"An ornithurine bird, _Hongshanornis longicresta_ gen. et sp... | <urn:uuid:8f491adb-2a06-420c-8fbd-76b40fec16f4> | 2.984375 | 319 | Academic Writing | Science & Tech. | 34.994344 |
THE GPS TIME & SPATIAL REFERENCE SYSTEMS
To fully understand the operations, as well as the mathematical basis, of GPS it is necessary to know the definition and implementation of the various time and spatial reference systems which are utilised in one form or another:
Spatial or coordinate ("datum") reference systems:... | <urn:uuid:c72e0329-b95f-4a9f-a081-f2b426d39d56> | 3.671875 | 2,366 | Academic Writing | Science & Tech. | 47.128807 |
When you create a local binding for a variable, that binding takes effect only within a limited portion of the program (see Local Variables). This section describes exactly what this means.
Each local binding has a certain scope and extent. Scope refers to where in the textual source code the binding can be accessed. E... | <urn:uuid:e4193d02-2b98-444f-b26f-8baf2e8c2cec> | 3.109375 | 242 | Documentation | Software Dev. | 37.128004 |
Amidst all the concern about the Deepwater Horizon spill, global warming, and a myriad other issues affecting fossil fuel usage, one item is often overlooked, an item that many people don’t want to think about too much.
Oil is a finite resource. One day, it will eventually run out. The global economy is based on the re... | <urn:uuid:e11f76ae-6b9c-48f9-93d4-3881e2020b5c> | 2.796875 | 653 | Nonfiction Writing | Science & Tech. | 47.838016 |
Earth's Climate Thermostat
by Larry Vardiman, Ph.D.
Global warming, the greenhouse effect, and climate change continue to receive attention in the media and scientific circles. A recent decision by President George W. Bush not to ratify the Kyoto Accords on Carbon Dioxide (CO2) emissions has spurred all kinds of politi... | <urn:uuid:70b5154c-42cd-4972-ab8a-817e2513771a> | 3.3125 | 1,714 | Academic Writing | Science & Tech. | 45.023161 |