text large_stringlengths 148 17k | id large_stringlengths 47 47 | score float64 2.69 5.31 | tokens int64 36 7.79k | format large_stringclasses 13
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There are four numeric types: plain integers, long integers,
floating point numbers, and complex numbers.
Plain integers (also just called integers)
are implemented using long in C, which gives them at least 32
bits of precision. Long integers have unlimited precision. Floating
point numbers are implemented using doubl... | <urn:uuid:0e6451e1-d390-4b41-98e1-099626c80867> | 4.53125 | 521 | Documentation | Software Dev. | 48.769293 |
Kirchhoff's law of thermal radiation
||This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. (December 2008)|
- See also Kirchhoff's laws for other laws named after Kirchhoff.
In thermodynamics, Kirchhoff's law of thermal radiation refers to wavelength-... | <urn:uuid:e56b16f2-7689-4060-aeac-68418ed2cead> | 3.703125 | 3,063 | Knowledge Article | Science & Tech. | 41.584254 |
E5 -- Problematis traiectoriarum reciprocarum solutio
(Solution to the problem of reciprocal trajectories)
This article contains Euler's first published use of complex numbers and a many-axis geometric construction.
Euler also calls functions f(x) for which f(x) = f(-x) even functions, perhaps the first use of this ter... | <urn:uuid:ddb60098-33e5-4b43-9e3a-6406a7731842> | 2.75 | 166 | Knowledge Article | Science & Tech. | 57.64 |
The no cloning theorem states that it is impossible to make an exact copy of something at the quantum level while retaining the original. More precisely, it says we can't make an exact copy of an arbitrary, unknown quantum state. This was first revealed by Wootters and Zurek in 1982. It may be possible to make copies i... | <urn:uuid:63a21c46-ba3a-4b0e-b5b9-a8a4704e7386> | 3.5625 | 1,257 | Knowledge Article | Science & Tech. | 51.071795 |
The surface albedo determines the amount of reflected solar radiation at the earth surface, its vegetation and clouds. The albedo is thus a key parameter for the shortwave radiation budget of the earth surface and the Earth as a whole. The surface albedo depends on land cover and radiative properties of the soil, snow ... | <urn:uuid:28867159-231b-47f0-93c9-6b4997e52375> | 4.34375 | 2,062 | Knowledge Article | Science & Tech. | 34.40321 |
INDONESIAN ASTEROID: Earlier this month, with no warning, a ~10-meter wide asteroid hit Earth's atmosphere above Indonesia and exploded. The break-up was so powerful, it triggered nuclear test ban sensors thousands of kilometers away. A just-released analysis of infrasound data shows that the asteroid detonated with an... | <urn:uuid:16745a7d-6dfd-4f40-ae81-e0f3a76a9e94> | 3.046875 | 2,390 | Knowledge Article | Science & Tech. | 47.475717 |
Posted at 6:59 AM on November 8, 2007
by Paul Huttner
Here's a new twist on climate change. Something is sparkling in Greenland these days, and it's not ice.
It seems the rush is on in Greenland for diamonds. Newly exposed rock that was under a sheet of ice several years ago has revealed some impressive diamond finds, ... | <urn:uuid:7f308471-a957-4206-887c-604be30d5647> | 2.921875 | 385 | Comment Section | Science & Tech. | 40.618906 |
Markovnikov was a Russian chemist who lived from 1838 to 1904. He studied at Kazan University and later went back to teach there. During his lifetime he was able to study chemistry and work in a laboratory know as "the cradle of Russian organic chemistry." His major accomplishment was made in 1869 in discovering the Ma... | <urn:uuid:39b42760-973d-4c37-aa21-7f1704ba6b28> | 2.96875 | 1,849 | Knowledge Article | Science & Tech. | 41.542648 |
A Kemp's Ridley sea turtle on the Cayman Turtle Farm, Grand Cayman.
© CI/Photo by Russ Mittermeier
Conservationists are trying to save the few remaining Kemp's Ridleys, the world's smallest and most
endangered sea turtles. Fishing nets and coastal development continue to threaten the species.
The Kemp's and Olive Ridle... | <urn:uuid:d516167a-fb84-42e4-82c1-a98ceef7972c> | 3.59375 | 378 | Knowledge Article | Science & Tech. | 48.417982 |
The CPU understands machine language. The machine language instructions are encoded as strings of bits. The instruction set is dependent on the type of CPU. The instructions are primitive like load, add, store, jump.
The machine instruction that adds 3 to register D1 might be encoded as the bit string:
0101 011 000000 ... | <urn:uuid:e1ee73cc-d581-4560-befa-ea311a50ca7e> | 4.21875 | 435 | Academic Writing | Software Dev. | 44.290909 |
Although we have already considered sombre ( Eso) and tobacco darkening ( Etob), alleles of the extension locus which cause darkening of the coat, there are a number of other unrelated determinants which also produce similar effects. Thus, as mentioned previously, yellow ( Ay/;B/) mice are often characterized, especial... | <urn:uuid:80b41a66-79f8-48b6-9cd7-f3fba2aca12a> | 3.296875 | 2,188 | Academic Writing | Science & Tech. | 38.566455 |
GNU/Linux has taken the world of computers by storm. At one time, personal computer users were forced to choose among proprietary operating environments and applications. Users had no way of fixing or improving these programs, could not look "under the hood," and were often forced to accept restrictive licenses. GNU/Li... | <urn:uuid:bafdbba9-408d-4ef3-b803-03ec6d72e513> | 3.03125 | 373 | Knowledge Article | Software Dev. | 22.70422 |
IN CLOSE-UP, they look like something out of a 1950s B-movie. Colonies of fossilised creatures, dubbed "hairy blobs", have been discovered in one of the harshest environments on Earth. The find may turn out to be crucial for spotting signs of extraterrestrial life in rocks on other planets.
Kathleen Benison, a geologis... | <urn:uuid:5a9e3c32-cdc8-48d2-abec-5a5467467a74> | 3.921875 | 227 | Truncated | Science & Tech. | 50.631293 |
Bats Upside Down
Name: Drew H
When bats sleep upside down does all their blood rush to
their heads like when people are hanging upside down?
Bats are so small that, unlike humans, the problem of blood distribution is
not a huge problem. They are able to wrap themselves into a small package and
like most mammals, they c... | <urn:uuid:f884201d-89b4-45e8-b3a8-0881b8013a6b> | 3.390625 | 374 | Q&A Forum | Science & Tech. | 46.228894 |
We've been impressed in the past by aerogel, a lattice-like solid that's almost entirely made of air but can support weight and also has tremendous insulating properties. Then last year an ultralight metal caught our eye, weighing in at 99.99 percent air, which leaves 0.01 percent solid.
Now we are excited to meet aero... | <urn:uuid:f78d05ea-7ca4-4d4a-86b1-96c2fdb41b5f> | 2.875 | 165 | Content Listing | Science & Tech. | 58.070313 |
What's your secret message?: With just a few household items--and a little bit of science--you can make an invisible ink message that will reveal itself under just the right conditions. Image: iStockphoto/JoKMedia
Have you ever wondered how spies and secret agents could leave secret messages? Invisible ink might sound ... | <urn:uuid:945e98a7-9363-4f54-8152-8119b183c62f> | 2.8125 | 513 | Tutorial | Science & Tech. | 61.815693 |
It’s pretty common to view outer space as a beautiful entity that we wish we could visit, but there are some things in outer space that we as humans never get to fully appreciate.
A team of scientist at the National Center for Atmospheric Research (NCAR) have created a computer-generated (super computer to be exact) im... | <urn:uuid:934aa04b-e3c2-46f2-bbf1-5487b1bb813a> | 3.203125 | 141 | Truncated | Science & Tech. | 37.409773 |
by Gary Leo Welz, M.A./M.S.
Waves are familiar to us from the ocean, the study of sound, earthquakes, and other natural phenomenon. But as any surfer can tell you, ocean waves come in very different sizes, as can all waves. To fully understand waves, we need to understand measurements associated with these waves, such ... | <urn:uuid:5ed177b8-1f38-4205-9e25-4b1ad958f8fb> | 4.1875 | 1,961 | Knowledge Article | Science & Tech. | 51.8376 |
White Hake (Urophycis tenuis) - Wiki
From Wikipedia, the free encyclopedia
[Photo] White hake, Urophycis tenuis. From plate 89 of Oceanic Ichthyology by G. Brown Goode and Tarleton H. Bean, published 1896.
The white hake or mud hake, Urophycis tenuis, is a phycid hake of the genus Urophycis, found in the northwest Atla... | <urn:uuid:c1ddd8f6-4820-4121-83d1-e351226731fa> | 3.0625 | 224 | Knowledge Article | Science & Tech. | 55.711611 |
Liverworts on the Green Tree of Life
Bryophytes as a natural group
Liverworts, along with mosses and hornworts, are often referred to as “Bryophytes.” There is strong evidence, however, that bryophytes, broadly defined in this way, are an artifical (i.e., non-monophyletic) group. Instead, the three bryophytes groups ap... | <urn:uuid:c784476a-883c-4f66-8408-cc58a05efc09> | 3.328125 | 1,095 | Academic Writing | Science & Tech. | 35.214184 |
The spade-toothed beaked whale may be the world's rarest whale. It was initially described in 1872 from a skull collected in the Chatham Islands, New Zealand. Other skull fragments were found on White Island, New Zealand in the 1950's and on Robinson Crusoe Island, Chile in 1986. No live animals had been observed. In D... | <urn:uuid:08308acf-8f59-4abe-b703-9bd05e429db5> | 3.921875 | 310 | Knowledge Article | Science & Tech. | 73.08375 |
The water flowing through Venice's famous canals laps at buildings a little higher every year and not only because of a rising sea level. Although previous studies had found that Venice has stabilized, new measurements indicate that the historic city continues to slowly sink, and even to tilt slightly to the east.
- Ve... | <urn:uuid:9621b922-1abf-4b9e-af4d-9c919b85bbd2> | 3.0625 | 185 | Content Listing | Science & Tech. | 42.61561 |
One can choose to generate solar power through Photovoltaics (PV) or Concentrated Solar Power (CSP) technologies.
PV: Based on the ‘photovoltaic effect’ of semiconductors, PV cells generate power by converting solar irradiation to electrical direct current. Photons from sunlight impart energy to the semiconductor’s fre... | <urn:uuid:60a7e9a4-026a-4e33-8c5d-bedf13e420fd> | 4 | 425 | Knowledge Article | Science & Tech. | 40.141069 |
why 360 degrees?
See also the
Dr. Math FAQ:
segments of circles
Browse High School Conic Sections, Circles
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Find the center of a circle.
Is a circle a polygon?
Volume of a tank.
Why is a circle 360 deg... | <urn:uuid:37aca3f3-6751-41a3-97d6-648c03076e2f> | 4.03125 | 2,000 | Q&A Forum | Science & Tech. | 73.924879 |
Let G = . How many elements are there in the group G? Also show that G is not cyclic.
I know that no. of elements in = 6 and no. of elements in = 10. So can i conclude that the total number of elements is then 60?
As for the cyclic part, i dont have any idea where to start from. I know that a group is cyclic if for eve... | <urn:uuid:aa9d0769-6a4e-4f61-bd36-e1736de289f6> | 2.84375 | 113 | Q&A Forum | Science & Tech. | 86.03806 |
Scorpions belong to the arachnid group (invertebrates with four pairs of legs and two body parts) along with such animals as spiders, ticks and mites. They are distinguished from other arachnids because they possess a large pair of pincers and a tail with a venomous sting on the tip. They are a very primitive group tha... | <urn:uuid:c9efb281-d36f-4f61-9158-86dc9dfc8065> | 3.609375 | 951 | Knowledge Article | Science & Tech. | 54.468013 |
Early Aerobic Bacteria
Location: Outside U.S.
Date: Summer 2009
I know that cellular respiration in mitochondria needs both
the membranes of the mitochondria so as to maintain a proton motive gradient.
If the theory of endosymbiosis is true, then how did the primitive aerobic
bacteria with only a single membrane carry ... | <urn:uuid:0576977b-1875-4fcc-b58a-4be4738ecae7> | 3.34375 | 157 | Q&A Forum | Science & Tech. | 36.297727 |
There are to be 6 homes built on a new development site. They could
be semi-detached, detached or terraced houses. How many different
combinations of these can you find?
This challenge is to design different step arrangements, which must
go along a distance of 6 on the steps and must end up at 6 high.
Vincent and Tara ... | <urn:uuid:a85ad334-31cb-45dc-8962-5ac67a96690a> | 2.765625 | 102 | Q&A Forum | Science & Tech. | 63.313253 |
qsort - sort a table of data
void qsort(void *base, size_t nel, size_t width,
int (*compar)(const void *, const void *));
[CX] The functionality described on this reference page is aligned with the ISO C standard. Any conflict between the requirements described here and the ISO C standard is unintentional. This volume ... | <urn:uuid:2de144cb-6142-4715-85b5-f3bcea33c106> | 2.796875 | 629 | Documentation | Software Dev. | 53.587906 |
Mission Type: Lander, Orbiter
Launch Vehicle: Titan IIIE-Centaur (TC-3 / Titan no. E-3 / Centaur no. D-1T)
Launch Site: Cape Canaveral, Fla., USA
NASA Center: Jet Propulsion Laboratory, Langley Research Center
Spacecraft Mass: 3,527 kg
1) imaging system
2) atmospheric water detector
3) infrared thermal mapper
1) imagin... | <urn:uuid:af926bfe-4753-4935-8f14-453a77af9e23> | 3.203125 | 602 | Knowledge Article | Science & Tech. | 50.689665 |
Goals: International Sun-Earth Explorer-3 (ISEE-3) was to investigate the solar wind and its interaction with Earth's magnetic field, among other phenomena in interplanetary space. It was later renamed International Cometary Explorer (ICE) and used to study two comets during an extended mission.
Accomplishments: ISEE-3... | <urn:uuid:7fc49103-9c19-4b54-9998-e8a6cc52b11a> | 3.59375 | 165 | Knowledge Article | Science & Tech. | 25.795 |
You are looking at historical revision 20452 of this page. It may differ significantly from its current revision.
This page contains a list of tutorials we have written (or would like someone to write) about Chicken Scheme.
- JRM's Syntax-rules Primer for the Merely Eccentric
- A famous and very friendly introduction t... | <urn:uuid:c86543f1-7204-480a-b69f-97bdac3c07da> | 2.6875 | 240 | Content Listing | Software Dev. | 43.355282 |
The compiler.ast module defines an abstract syntax for Python. In the abstract syntax tree, each node represents a syntactic construct. The root of the tree is Module object.
The abstract syntax offers a higher level interface to parsed Python source code. The parser module and the compiler written in C for the Python ... | <urn:uuid:1ad58729-29c1-433c-b39f-b829951683ce> | 3.234375 | 207 | Documentation | Software Dev. | 47.145 |
Tuesday 18 June
Cromwell chafer (Prodontria lewisi)
Cromwell chafer fact file
- Find out more
- Print factsheet
Cromwell chafer description
The Cromwell chafer is a Critically Endangered beetle found at just one site in Cromwell, New Zealand. It is a flightless beetle that belongs to the same family as dung beetles. Th... | <urn:uuid:284bfcc7-5f0b-4f42-8de5-99169249a1e3> | 3.3125 | 1,780 | Knowledge Article | Science & Tech. | 38.766164 |
Asian Longhorned Beetle (ALB)
Asian Longhorned Beetle - Anoplophora glabripennis
Asian Longhorned Beetle
Photograph credit: Kenneth R. Law,
USDA APHIS PPQ,
On September 13, 1996, the Systematic Entomology Laboratory of the Agricultural Research Service confirmed a specimen sent to them for identification as A. glabripe... | <urn:uuid:d8910b17-9247-4361-bbad-8e1104a7696f> | 2.953125 | 410 | Knowledge Article | Science & Tech. | 42.440208 |
Technologies on the road to Mars
The hatch to the airlock opens, revealing a human figure encased in a white pressure suit. After a brief glance at the strange surroundings through his bowl-shaped visor, the ambassador from Earth gingerly steps outside and begins to descend the ladder.
Within minutes, the visitor from ... | <urn:uuid:23c3eb28-5a21-4bbe-81bc-fb4d9f45e8a7> | 3.25 | 725 | Knowledge Article | Science & Tech. | 28.189933 |
Our recent studies on isotope anomalies in planetary atmospheres, especially in Titan's atmosphere show an indication that our early Sun underwent during the first 600 million years after its origin a very active period which is called Post-T-Tauri phase.
We investigate the particle and radiation environment during suc... | <urn:uuid:b7a88dd5-f9a7-4c2f-abfb-0da2047670bf> | 3.078125 | 258 | Knowledge Article | Science & Tech. | 22.022757 |
Following the distinction made by Gene Rasmusson (Rasmusson et al., 1991) in the wind data, we also looked at the low-frequency mode (LFM) associated with ENSO (Figure 2, again in the color well). In that case, the amplitudes are even more tightly connected to the tropical Pacific and the west coast of the Americas. Wh... | <urn:uuid:39e8c24f-44b1-4826-b1bd-5357e0df1366> | 2.75 | 311 | Academic Writing | Science & Tech. | 53.309306 |
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Gypaetus barbatus , Photo: Michael Lahanas
Gypaetus barbatus (Linnaeus, 1758)
* Carolus Linnaeus: Systema Naturae ed.10 p.87
The Lammergeier, Lammergeyer, or Bearded Vulture, Gypaetus barbatus ("Bearded Vulture-Eagle"), is the only member of the genus Gypaetus. Traditionally considered an Old World vulture, it actually... | <urn:uuid:4e615058-8e3e-4600-9f34-cffd37d71109> | 3.171875 | 1,181 | Knowledge Article | Science & Tech. | 55.678076 |
The world's newest flower is a species less than 140 years old hailing from southern Scotland, but its parents are from the Andes and North America's west coast. The yellow monkey flower, or Mimulus peregrinus—Latin for "wanderer," is described in the journal Phytokeys. (Click on the image for higher resolution.)
Mario... | <urn:uuid:74cf6414-c997-40d9-832a-f2fd821b4c15> | 3.609375 | 524 | Truncated | Science & Tech. | 42.297384 |
What do we know about the life and habits of the colossal squid?
We know very little about the colossal squid’s life history, diet, or behaviour, because they live at extreme depths in freezing water. They are also very rarely captured. The first report of a colossal squid was in 1925, when the head and arms were disco... | <urn:uuid:8b43b8f3-f91e-472b-8420-a8a5a6eae414> | 3.75 | 495 | Knowledge Article | Science & Tech. | 54.303953 |
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mass extinctions and technology
An old question I would like to reintroduce:
"If human beings were to become extinct in the next 500 years due to
global warming, pestilence or other catastrophe, what if anything woul... | <urn:uuid:7acf0103-33ac-4ad2-9e8c-82a81561589e> | 3.25 | 954 | Comment Section | Science & Tech. | 41.815271 |
This data set contains monthly averaged wind stress over the global ocean for the years 1870 through 1976. The data are given on a 2 deg latitude x 2 deg longitude grid. Monthly data for each month of the averaged years of the period include zonal and meridional Wind_U Stress and Wind_V Stress. The unit of measurement ... | <urn:uuid:aaab1da5-cc4e-48fd-8401-5f45f773262a> | 2.796875 | 150 | Content Listing | Science & Tech. | 54.505523 |
Tag: Ice Shelves
3 time-lapsed photos show the incredible disintegration of the Filchner ice shelf in Antarctica. Within a 24-hour space, an area of sea ice larger than the state of Rhode Island broke away from the Ronne-Filchner Ice Shelf and shattered into many smaller pieces. The Moderate Resolution Imaging Spectror... | <urn:uuid:344d84df-03ed-4736-9bae-c2f16cb9421e> | 2.875 | 658 | Content Listing | Science & Tech. | 40.323461 |
Kolkata: There was a huge solar flare in 1859. It was so large that it could be seen with the naked eye. In 1989, a solar storm wiped out Canada's northern electric grid. Canada was out of power for almost three days.
Violent magnetic emissions from the sun could one day destroy all electronic equipment on earth.
An In... | <urn:uuid:43548af3-a206-47ff-a246-ab6bad2855c5> | 2.984375 | 153 | Truncated | Science & Tech. | 52.42204 |
As I understand the basic idea of particle filter is to predict the state of the particle by generating N different possible state. After that, each possible state is evaluated by a predict model (give the weight to each particle).
So...let say, if my particle is (x, y, z). Then, because there are M different possible ... | <urn:uuid:45c520ad-8de4-4327-911f-f45ca97e0bc6> | 2.8125 | 102 | Q&A Forum | Science & Tech. | 66.66239 |
For many reasons, a server can never allow access to its entire directory hierarchy. Although there is really no indication of this given to the web browser, every path given in a requested URI is therefore a virtual path; early in the processing of a request, the virtual path given in the request must be translated to... | <urn:uuid:0c085e76-250e-4b85-808a-a13a637e424b> | 2.953125 | 1,077 | Documentation | Software Dev. | 44.52 |
A team of physicists have curbed the hope that quantum physics might be squared with common sense. At least if we want to hang on to Einstein's highly respected theory of relativity. Their result concerns what Einstein called "spooky action at a distance" and it may soon be possible to test their prediction in the lab.... | <urn:uuid:5286d8e8-6e0a-4907-8d0f-bcb68046e676> | 3.203125 | 466 | Content Listing | Science & Tech. | 50.263635 |
The Radio Aurora Explorer (or RAX) is the first CubeSat mission sponsored by the National Science Foundation to study space weather.
RAX is a joint venture between the University of Michigan and SRI International. Its primary mission objective is to study large plasma formations in the ionosphere, the highest region of... | <urn:uuid:cfffed81-484c-4176-897e-88c9253d05a2> | 3.484375 | 295 | Knowledge Article | Science & Tech. | 31.91943 |
From the ocean weather will eat this idea alive department comes a ridiculous bit of wishful thinking from the world’s lead scientist on “the coral reefs are going to die and its all your fault” discipline.
Yes, it is our hot headed buddy from Brisbane, Ove Hoegh-Guldberg, with what just might be the wackiest climate c... | <urn:uuid:8a888444-ed61-49dc-847b-ae3887928565> | 3.109375 | 584 | Personal Blog | Science & Tech. | 51.680297 |
is the chemical compound with the formula [Co(NH3
. This coordination compound is considered an archetypal "Werner complex", named after the pioneer of coordination chemistry, Alfred Werner
Alfred Werner was a Swiss chemist who was a student at ETH Zurich and a professor at the University of Zurich. He won the Nobel Pr... | <urn:uuid:2e6d7f9b-7651-4c62-84bc-56a6d341c529> | 3.5625 | 1,455 | Knowledge Article | Science & Tech. | 41.033903 |
Ask a question about 'Lobochilotes'
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Answer questions from other users
is a genus of fish
Fish are a paraphyletic group of organisms that consist of all gill-bearing aquatic vertebrate animals that lack limbs with digits. Included in this definition are the living hagfish, lam... | <urn:uuid:77940f0c-2154-45ef-804a-e5142fa51677> | 3.140625 | 178 | Q&A Forum | Science & Tech. | 33.0103 |
Ask a question about '
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Full Discussion Forum
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of grass in the
The Poaceae ... | <urn:uuid:1d72a132-3ae7-427f-a079-f20214728d80> | 2.96875 | 127 | Q&A Forum | Science & Tech. | 44.143367 |
Wednesday 15 May
Caterpillar hunting wasp (Delta dimidiatipenne)
Caterpillar hunting wasp fact file
- Find out more
- Print factsheet
Caterpillar hunting wasp description
Named for its habit of hunting caterpillars to feed its young, the caterpillar hunting wasp (Delta dimidiatipenne) belongs to one of the largest orde... | <urn:uuid:5796e8ac-424b-48b8-9b77-3e6ace84bb70> | 3.46875 | 1,961 | Knowledge Article | Science & Tech. | 45.780161 |
Last month, during routine functional performance testing of the mutibeam mapping echosounders on the Schmidt Ocean Institute
s flagship R/V Falkor, the team aboardincluding researchers from the University of New Hampshire, Ifremer, and Woods Hole Oceanographic Institutiondiscovered the S.S. Terra Nova, a whaler, seale... | <urn:uuid:87915c08-b164-4029-bc5b-df6528b42165> | 2.765625 | 1,442 | Knowledge Article | Science & Tech. | 33.138361 |
© Wikimedia Commons, Creative Commons Attribution-Share Alike 3.0 license. Author: Sponk, 23 March 2010.
These two molecules, RNA on the left and DNA on the right, form the basis of life as we know it. They have a remarkably simple structure, each being made of a set of four base molecules called nitrogenous bases. The... | <urn:uuid:231af621-93cf-4506-a218-413a92dd4075> | 3.9375 | 163 | Knowledge Article | Science & Tech. | 44.26323 |
Software Design (CSC-223 97F)
Outline of Class 12: Tools
- A reminder that majors should see Mr. Imig to have your pictures taken
for the majors' board.
- The reading on greedy algorithms
is almost ready.
- For the first part of
you only have to recreate your fellow student's
routine (although you will do so in a separ... | <urn:uuid:4af8a46a-544c-4020-ac62-bfe48ca74a35> | 3.28125 | 1,129 | Documentation | Software Dev. | 66.082257 |
Many of the questions asked in #postgresql revolve around using sequences in PostgreSQL. To avoid answering the same questions again and again, I thought it would be worthwhile to summarize the basic steps involving in using sequences in PostgreSQL.
A sequence is a special kind of database object designed for generatin... | <urn:uuid:51f6042f-3356-478d-8012-b8f369d54415> | 3.421875 | 1,316 | Documentation | Software Dev. | 33.238336 |
A CONTRACEPTIVE spray for plants is being developed that could eradicate certain weeds from farmers' fields and cut herbicide use.
Ed Newbigin of Melbourne University and colleagues at CSIRO, Australia's national research organisation, are planning to exploit the mechanism that prevents certain plants self-fertilising.... | <urn:uuid:d04af281-58bc-4c6f-8cb2-b82d72defbc5> | 3.0625 | 228 | Truncated | Science & Tech. | 49.52613 |
Diamonds are the hardest solid materials we know, and the ghostly space-age materials known as aerogels are the least dense. Looking for a challenge, scientists at Lawrence Livermore National Laboratory decided to combine these substances and turn out a spongy, translucent version of a girl’s best friend.
Future humans... | <urn:uuid:4855b894-2bed-4c01-90aa-4216952a39a2> | 3.0625 | 178 | Content Listing | Science & Tech. | 34.742069 |
Changes of Land Cover and Land Use and Greenhouse Gas Emissions in Northern Eurasia: Impacts on Human Adaptation and Quality of Life at Regional and Global Scales
Funded by the National Science Foundation
Northern Eurasia accounts for about 20% of the Earth’s land surface and 60% of the terrestrial land cover north of ... | <urn:uuid:900bd8a6-5910-4743-ad12-608e4f72fb16> | 3.21875 | 547 | Knowledge Article | Science & Tech. | 21.034106 |
Wild Things: Life as We Know It
Cobras, sharks, lemurs, hermit crabs and more...
- By T. A. Frail, Megan Gambino, Laura Helmuth, Erica R. Hendry and Abigail Tucker
- Smithsonian magazine, July-August 2010,
(Franco Banfi / Photolibrary)
Scientists suspected that the common thresher shark used its long tail to capture fo... | <urn:uuid:a3a1ba0b-f035-4052-b67a-95e30dc5d19a> | 3.109375 | 384 | Content Listing | Science & Tech. | 50.083391 |
As it happens, we are building a lot of flat-screen TV sets and computer monitors these days. Gallium is thought to make up 0.0015 percent of the Earth’s crust and there are no concentrated supplies of it. We get it by extracting it from zinc or aluminum ore or by smelting the dust of furnace flues. Dr. Reller says tha... | <urn:uuid:61882820-cbfa-46af-b6fd-554281502917> | 3.1875 | 180 | Truncated | Science & Tech. | 67.10875 |
Data reported by the weather station: 916500 (NFNR)
Latitude: -12.5 | Longitude: 177.05 | Altitude: 26
|Main||Year 1986 climate||Select a month|
To calculate annual averages, we analyzed data of 362 days (99.18% of year).
If in the average or annual total of some data is missing information of 10 or more days, this is ... | <urn:uuid:1d2dd612-0156-46fc-bffe-0eb281b51340> | 2.859375 | 358 | Structured Data | Science & Tech. | 72.600303 |
New Scientist said:
The standard model of particle physics assumes the Higgs boson is an elementary particle. But what if, rather like the proton, it is itself made up of particles?
We know the standard model is incomplete because it cannot explain all the phenomena we observe (see "Beyond Higgs: Deviant decays hint at... | <urn:uuid:5efb2282-4e56-49c0-9b50-825db8ffb64b> | 3.140625 | 231 | Comment Section | Science & Tech. | 29.275 |
Upper Level Low - Meteorological Physical Background
by ZAMG and FMI
Upper Level Lows are closed cyclonically circulating eddies in the middle and upper troposphere. They are sometimes also called "cold drops", because the air within an Upper Level Low is colder than in its surroundings.
The development of a typical Up... | <urn:uuid:c339e705-48c2-47be-ae5a-bf00d6e80176> | 4.0625 | 765 | Knowledge Article | Science & Tech. | 50.072835 |
Wildlife Spectacle: The Butterfly Effect
Monarch butterflies, each smaller than the palm of your hand, migrate thousands of miles every year, thus ensuring the survival of the species.
From November to March, black-and-orange flecks fill the sky in central Mexico’s mountains and along the California coast. These airbor... | <urn:uuid:039dc381-9108-48da-9a3d-d05435199cc7> | 4.28125 | 1,224 | Knowledge Article | Science & Tech. | 43.015441 |
Expressions are used in a variety of contexts within SQL statements, particularly in search condition predicates and the
An expression always evaluates to a single value.
The syntax of an expression is as follows:
Note: A user-defined-function is created by using the CREATE FUNCTION statement.
A unary operator operates... | <urn:uuid:b247f49f-66a4-48fc-a830-66a8ce925ec1> | 3.4375 | 1,417 | Documentation | Software Dev. | 41.681203 |
An ampere-hour or amp-hour (symbol Ah, AHr, A·h, A h) is a unit of electric charge, with sub-units milliampere-hour (mAh) and milliampere second (mAs). One ampere-hour is equal to 3600 coulombs. The ampere-hour is frequently used in measurements of electrochemical systems such as electroplating and electrical batteries... | <urn:uuid:2246519a-999d-4601-b9e4-0ad3b9d1e587> | 3.4375 | 397 | Knowledge Article | Science & Tech. | 42.05382 |
Comments: Population decline in the Pribilof Islands in the 1980s apparently was due to harvests of females during the 1960s, increased mortality at sea (e.g., due to entanglement in debris such as discarded fishing nets), and perhaps reduced prey availability caused by increased commercial fishing in the North Pacific... | <urn:uuid:2a2ce880-4086-4399-b798-22007df27888> | 3.03125 | 130 | Structured Data | Science & Tech. | 44.643636 |
It’s been raining for about two weeks straight in Minnesota and my kids are climbing the walls. Yesterday, they built an amazing fort and played in it for an hour before they came to me asking what they could do next.
This easy experiment kept them busy for a little while.
Take a plastic comb and comb your hair a numbe... | <urn:uuid:e35b8013-e133-4575-a8e5-e774df212fab> | 3.515625 | 219 | Personal Blog | Science & Tech. | 61.177275 |
6th August 2006 - 02:57 PM
QUOTE (sdogv+Aug 5 2006, 09:08 PM)
So are you suggesting edges are space/energy, time/energy, and mass/energy are interactions of the six "edges" which in a regular tetrahedron have unique "directions", .....sideways?
I'm suggesting there are no actual edges. There is no actual volume or surf... | <urn:uuid:514d8629-5bd4-45b4-9b4c-fad1b34a171b> | 2.703125 | 1,811 | Comment Section | Science & Tech. | 60.278348 |
At one stage of a water treatment process the number of particles of foreign matter per litre present in the water has a poisson distribution with mean 10. The water then enters a filtration bed which should extract 75% of foreign matter. The manager of the treatment works orders a study into the effectiveness of this ... | <urn:uuid:855d78bc-de9a-4dfa-b459-612f2579430f> | 2.96875 | 121 | Tutorial | Science & Tech. | 51.223087 |
Lionfish and zebra mussels are problematic aquatic invaders along U.S. coasts. How lionfish will affect native fish populations and commercial fishing industries along the Atlantic coast has yet to be determined. Zebra mussels are known to cost the United States billions of dollars each year through economic losses and... | <urn:uuid:035db8d9-76c1-44ca-9093-463769659984> | 3.234375 | 185 | Knowledge Article | Science & Tech. | 38.795569 |
I often hear people claim "global warming will cause the ice-caps to melt, and that will cause the water levels in the ocean to rise, and that will cause major world-wide flooding."
Now, ignoring the question "are ice cap melting", I am still wondering how it is possible for melting ice-caps to cause water levels to ri... | <urn:uuid:96f0440c-db0b-425f-abed-780537e3d3e1> | 3.328125 | 305 | Q&A Forum | Science & Tech. | 50.796837 |
A sequence of groups is just a list of groups with homomorphisms going down the list: . We’ll use to refer to the homomorphism from to . We say that a sequence is “exact” if the image of is the kernel of for each .
What does this mean? First off, if we start with an element of and hit it with we get something in . Sinc... | <urn:uuid:07f38389-e10b-4ae5-8d2d-8d6bbce245b9> | 3.9375 | 798 | Personal Blog | Science & Tech. | 62.813293 |
Robin Ince examines Schrodinger's Cat, the paradox at the heart of quantum physics, and discovers its influence on science and popular culture. Fifty years after the death of Nobel laureate Erwin Schrodinger, the quantum mysteries of his cat-in-a-box paradox still continue to drive physicists in research today. Can a l... | <urn:uuid:9b917cef-e293-4ab2-a39d-7ed260944480> | 3.09375 | 414 | Truncated | Science & Tech. | 53.023197 |
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.
A number of generator configurations have been devised to accommodate the Hall effect. In a Faraday generator, as shown in part A of the figure, t... | <urn:uuid:3863bd35-72d8-4bec-a220-375efd4b9bbc> | 3 | 130 | Truncated | Science & Tech. | 45.943182 |
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.
...and some resembling spiderwebs (the arachno-boranes). Which type of structure is obtained correlates with the number of valence electrons in th... | <urn:uuid:c9f71d8a-7ee5-4694-8c4d-1b22383cc2b8> | 3.4375 | 232 | Truncated | Science & Tech. | 52.458997 |
Forbes, B.C., Fauria, M.M. and Zetterberg, P. 2010. Russian Arctic warming and 'greening' are closely tracked by tundra shrub willows. Global Change Biology 16: 1542-1554.
Remote sensing data suggest that tundra vegetation in North America may be responding to recent warming via enhanced photosynthetic activity (Goetz ... | <urn:uuid:c7ddc1da-f99f-4b89-8383-e33095056af4> | 3.0625 | 859 | Knowledge Article | Science & Tech. | 66.700283 |
Common Lisp the Language, 2nd Edition
These functions perform various transformations on characters, including case conversions.
The function character coerces its argument to be a character if possible; see coerce.
(character x) == (coerce x 'character)
The argument char must be a character object. char-upcase attempt... | <urn:uuid:a7d121a5-2d88-49e9-a64e-ce81e547e459> | 3.90625 | 1,192 | Documentation | Software Dev. | 50.346111 |
Milton Banana wrote:
I have some questions about this Global Energy Budget. Every measurement is in Watts per square meter. 341 of shortwave radiation comes in. 102 of the shortwave is reflected back out. 239 IR going out. All outgoing adds up to 341. What comes in goes out. That makes sense. Here’s where things get a ... | <urn:uuid:983583c5-809b-42bf-a8c1-816b3e3ea8ea> | 3.296875 | 338 | Comment Section | Science & Tech. | 74.639744 |
IT WAS recently reported in The Scotsman that up to 2500 tonnes of nuclear waste had been deposited on top of a million-tonne dump of Second World War munitions in a stretch of sea no more than ten kilometres off the southwest coast of Scotland called Beauforts Dyke (see "Danger from the deep", New Scientist, 18 Novemb... | <urn:uuid:72144f92-f06d-4bf0-8d38-00ba821bd503> | 3.375 | 208 | Truncated | Science & Tech. | 56.286283 |
Department of Physics, University of California, Berkeley
Materials Sciences Division, Lawrence Berkeley National Lab
ARPES (Angle-Resolved Photoemission Spectroscopy) is an experimental technique based on several refinements of the photoelectric effect initially observed by Heinrich Hertz in 1887.
When photons of a we... | <urn:uuid:a82fef1c-6809-4339-9c6d-c692e33cca9a> | 3.21875 | 743 | Knowledge Article | Science & Tech. | 20.277057 |
Free Body Diagrams
Practice your skill at constructing free-body diagrams for a given physical situation. Twelve different descriptions of a physical situation are presented; your goal is to determine the type and relative magnitude of the forces acting upon the described object.
- Use the pull-down menus on the right ... | <urn:uuid:a4036e34-0257-4482-a66f-41b7b2a19e9e> | 4.21875 | 322 | Tutorial | Science & Tech. | 45.162558 |
Bind a name to a socket
#include <sys/types.h> #include <sys/socket.h> int bind( int s, const struct sockaddr * name, socklen_t namelen );
- The file descriptor to be bound.
- A pointer to the sockaddr structure that holds the address to be bound to the socket. The socket length and format depend upon its address famil... | <urn:uuid:f02a3aaf-a3de-47ef-8879-fa0ab5914b99> | 3.40625 | 286 | Documentation | Software Dev. | 60.245884 |
This is my first blog ever. I am not going to make any advanced apologies about my writing. I am not going to attempt to impress you by chirping that I am writing this blog on such-and-such flight, or explain that I am reporting from a particularly nice part of the world only because I was forced to go there for work. ... | <urn:uuid:8caeef94-e09d-44f0-bd9f-35527b0ade0a> | 2.84375 | 1,700 | Personal Blog | Science & Tech. | 55.739223 |
This deficit supports the hypothesis that between 100 and 200 million years after its formation, Earth was made up of an ocean of molten magma, which gradually cooled. The work, which was carried out in collaboration with the Laboratoire de Géologie de Lyon (CNRS / Université Lyon 1 / ENS de Lyon) and the University of... | <urn:uuid:8a11c21b-19fe-4c47-9bfd-5e15767e52dd> | 4.28125 | 244 | Knowledge Article | Science & Tech. | 46.0425 |
In this section, we will explore the concept of method
in the reference of object oriented programming techniques.
As we earlier described in the topic class, a class have two major parts state and behavior. States are represented by variables and behaviors are defined by methods.
If you are facing any programming issu... | <urn:uuid:9dc8373a-4d66-47bb-835e-4a8ad3f7cb5c> | 3.25 | 95 | Documentation | Software Dev. | 45.749976 |
Boletín de la Sociedad Botánica de México
versión impresa ISSN 0366-2128
MARTINEZ-OREA, Yuriana; CASTILLO-ARGUERO, Silvia; GUADARRAMA-CHAVEZ, M. Patricia y SANCHEZ, Irene. Post-fire seed bank in a xerophytic shrubland. Bol. Soc. Bot. Méx [online]. 2010, n.86, pp. 11-21. ISSN 0366-2128.
Through the seedling emergence me... | <urn:uuid:4e39ec7d-31c8-4496-b04f-25f4721463cf> | 2.6875 | 315 | Academic Writing | Science & Tech. | 44.888333 |
How long can you hold your breath? Crucian carp (Carassius carassius), a close relative to the goldfish, is capable of living for months without oxygen. Scientists at the University of Oslo have recently unpacked the mechanisms allowing Crucian carp to exhibit superior breath holding skills.
First, lets gain some backg... | <urn:uuid:ce4c75a1-8ee3-46b0-b988-ce52eba5df61> | 3.484375 | 330 | Knowledge Article | Science & Tech. | 40.455533 |
Beckett has been fascinated by batteries for as long as I can remember, so his latest suggestion for a science topic should not have been a surprise. Beckett wanted to know how toys work. We talked about the mountain of toys he has and about the energy makes them work -- whether the energy comes from him pushing a car ... | <urn:uuid:7536c57a-b7d4-495f-8693-7e602613e89f> | 3.65625 | 1,207 | Personal Blog | Science & Tech. | 57.063665 |
Four years ago Columbia University psychologist Betsy Sparrow turned to her husband after looking up some movie trivia online and asked, “What did we do before the Internet?” Thus, Sparrow set out to investigate how Google, and all the information it proffers, has changed how people think. Four psychology experiments l... | <urn:uuid:865436e3-cb04-433d-83da-137cd9e08a4a> | 3.265625 | 248 | Knowledge Article | Science & Tech. | 47.643369 |
California birds are getting slightly bigger, according to a study published in Global Change Biology in which researchers measured and weighed 33,000 birds over the past 40 years. The increases were small, but significant: in the last 25 years robins have grown 0.2 ounces in mass and 1/8th of an inch in wing length, f... | <urn:uuid:9c0ded85-4759-479e-8538-63e13bcecb12> | 3.40625 | 390 | Personal Blog | Science & Tech. | 57.352091 |
June 19, 2009
As I have written about many times here on Dinosaur Tracking, paleontologists presently have an overwhelming amount of evidence that birds are living dinosaurs. That doesn’t mean that everything about the dinosaur-to-bird transition is well-understood, though. For years scientists have been faced with a p... | <urn:uuid:466c5eb3-f224-4939-bd62-951d73c99dfa> | 3.734375 | 903 | Personal Blog | Science & Tech. | 40.775174 |
Comparator and Comparable in Java Examples
Difference between Comparator and Comparable in Java is very popular Java interview question mostly asked in telephonic round and writing code to sort object using Comparable or Comparator is popular on written test round of interview.The question was this “How you will sort E... | <urn:uuid:437ede86-c77d-44e1-8b0b-68bce45db4fe> | 3.859375 | 1,698 | Personal Blog | Software Dev. | 26.605396 |
The Earth's Atmosphere
- The region extending above about 60 km to beyond 1000 km altitude, where the
concentration of ions is large enough to influence radio propagation. It is divided into several
regions: D (60 to 100 km), E (100 to 150 km), F (150 to 1000 km). The F region is further
divided into F1 and F2 regions,... | <urn:uuid:f13874cf-bdcb-4e5b-abcc-05abf328b44f> | 3.4375 | 152 | Knowledge Article | Science & Tech. | 51.744333 |
A dusty plasma is a plasma containing nanometer or micrometer-sized particles suspended in it. Dust particles may be charged and the plasma and particles behave as a plasma, following electromagnetic laws for particles up to about 10 nm (or 100 nm if large charges are present). Dust particles may form larger particles ... | <urn:uuid:73322af5-65c4-4456-8861-2ef8281ecb73> | 3.421875 | 196 | Knowledge Article | Science & Tech. | 27.953842 |
American bees Botanys Breeches Bumblebee Coevolution conservation Dutchman’s earthworms ethnobotany Ian jayhawks Kestrel McLeod native Pollination Queen species wildflowers Wildflowers
See Wild Ideas...the Podcast 10 for discussion of mobbing behavior how game theory strategies apply to the risk-benefit of smaller bird... | <urn:uuid:bec74774-c298-4e6b-b1f5-d65cfb7c82df> | 2.796875 | 169 | Audio Transcript | Science & Tech. | 20.277706 |