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Region of the electromagnetic spectrum extending from about
This is the wavelength
region to which the human eye is sensitive.
There are no precise limits for the spectral range of visible radiation since
they depend upon the amount of radiant power
reaching the retina and on the responsivity
of the observer.
PAC, 2007... | <urn:uuid:8b486a13-4392-45f6-aef8-6686ec56e3f7> | 3.15625 | 205 | Structured Data | Science & Tech. | 65.805951 | 1,200 |
Pascal’s Triangle is a special triangular arrangement of numbers used in many areas of mathematics. It is named after the famous 17th century French mathematician Blaise Pascal because he developed so many of the triangle’s properties. However, this triangular arrangement of numbers was known by the Arabian poet and ma... | <urn:uuid:7a83b8ab-ac7e-4b18-be31-d445000cca1b> | 3.890625 | 737 | Knowledge Article | Science & Tech. | 80.608913 | 1,201 |
Evolution is generally regarded as pretty good at specializing species for certain ecological niches, but with a glacial pace of adaptation, sometimes it needs a helping hand. Meet the team of the Weizmann Institute of Science in Israel, who decided they wanted to beef up the paraoxonase 1 (PON1) to the point it could ... | <urn:uuid:ca631b54-235b-4a94-a3c9-fb08d2a7335c> | 3.390625 | 341 | News Article | Science & Tech. | 25.530688 | 1,202 |
Take an $n \times n$ matrix $A$, and suppose that $v$ is an eigenvector of $A$, with all entries of $v$ equal to a constant $k$. Naturally, $k \ne 0$. Let $\lambda$ be the eigenvalue of $A$ that has $v$ as an eigenvector. If $(b_1, b_2, \dots, b_n)$ is any row of $A$, then by the definition of eigenvalue and eigenvecto... | <urn:uuid:981f0954-07f0-4ac9-a047-28425b31384b> | 2.65625 | 280 | Q&A Forum | Science & Tech. | 78.179402 | 1,203 |
Interview with Dr. Motoji Ikeya
By David Jay Brown
Dr. Motoji Ikeya is a Japanese interdisciplinary researcher, using electron spin resonance (ESR) in geosciences and radiation dopsimetry, with a research interest in the cause of unusual animal behavior prior to earthquakes. His laboratory experiments at Osaka Universi... | <urn:uuid:3a002823-0b1c-4678-87bd-401e9c6f2b2c> | 2.78125 | 1,663 | Audio Transcript | Science & Tech. | 34.503397 | 1,204 |
Serialization is the process of converting the state of an object into a form that can be persisted or transported. The complement of serialization is deserialization, which converts a stream into an object. Together, these processes allow data to be easily stored and transferred.
The .NET Framework features two serial... | <urn:uuid:03851e7e-0db5-429c-93c2-656adf6af591> | 3.6875 | 376 | Documentation | Software Dev. | 27.278913 | 1,205 |
Great White Sharks Swim One Step Closer to ProtectionsAll Press Releases…
National Marine Fisheries Service to Conduct In-Depth Review of West Coast Population
September 27, 2012
Contact: Geoff Shester ( email@example.com | 831-643-9266 )
The National Marine Fisheries Service (NMFS) today announced a positive 90-day fi... | <urn:uuid:d1f77a14-127b-434a-b59b-4fb2edd85a3c> | 2.578125 | 905 | News (Org.) | Science & Tech. | 28.031261 | 1,206 |
May 26, 2010, 6:13 AM
Post #4 of 6
Please use the code tags whenever you post code.
Start by adding these 2 lines, which should be in every Perl script you write.
Those pragmas will point out lots of coding errors that can be difficult to track down.
The strict pragma forces you to declare your vars, which is done with... | <urn:uuid:0fb65209-141f-4086-870c-fe2d50bd57cc> | 2.859375 | 254 | Comment Section | Software Dev. | 73.336645 | 1,207 |
On Friday, we posed the following back-to-school-themed Fermi problem:
Assuming you're not in a big lecture hall and the professor shuts the door at the start of class, how long does it take for you and your classmates to deplete the oxygen enough to feel it?
We promised a surprising answer, and here it is. You decide ... | <urn:uuid:a68ffb3c-3c83-4b98-ad7b-1282010fb275> | 3.03125 | 594 | Personal Blog | Science & Tech. | 80.662083 | 1,208 |
In the United States, more people watch NASCAR racing than baseball, supposedly "America's pastime." It's second only to football, with 75 million dedicated fans who tune in (or show up) almost every weekend of the year to watch stock cars race around a track at speeds up to 190 mph (306 kph) [sources: Fulton, Eaton].
... | <urn:uuid:5ac81604-bad4-4472-9a98-2a76b104a585> | 3.125 | 362 | Personal Blog | Science & Tech. | 60.46284 | 1,209 |
Tomorrow finally marks the end of the 2012 Atlantic hurricane season—and it’s been one for the record books. As the National Oceanic and Atmospheric Administration (NOAA) reports today, this season produced 19 names storms, 10 of which became hurricanes and one that became a major hurricane. The sheer number of named s... | <urn:uuid:706afd2f-f87e-4ee0-86ec-33663f77e30e> | 2.59375 | 286 | Truncated | Science & Tech. | 49.913721 | 1,210 |
(Files in red–history)
26H. Birkeland, 1895
27. Aurora from Space
28. Aurora Origin
28a. Plus and Minus
29. Low Polar Orbit
30. Magnetic Storms
30.a Chicago Aurora
31. Space Weather
32. Magnetic planets
33. Cosmic Rays
34. Energetic Particles
35. Solar fast Particles
But there also exists a practical angle: in a world ... | <urn:uuid:4645ea55-347c-4502-b5a1-9cdf1272ce9a> | 3.640625 | 1,257 | Knowledge Article | Science & Tech. | 37.842693 | 1,211 |
Search the Web
Content Tagged 'Science'
Massive Solar Storm Could Hit Earth within Two Years
Scientists are monitoring solar activity and say it's possible that the Earth will experience a massive solar storm in the near future.
Announcement: High School Students’ Scientific Research Will Be Featured July 27th at the U... | <urn:uuid:fe2de53a-dfb5-4e14-91a8-027f6106180d> | 2.640625 | 400 | Content Listing | Science & Tech. | 34.891577 | 1,212 |
Asked Questions About the
- What is the AMO?
- How much of the Atlantic are we talking about?
- What phase are we in right now?
- What are the impacts of the AMO?
- How does the AMO affect rainfall and
- How does the AMO affect Florida?
- How important is the AMO when it comes to
hurricanes - in other words - is it one... | <urn:uuid:db6b461b-6c59-4f67-946a-fce7822bcc9c> | 3.359375 | 1,038 | FAQ | Science & Tech. | 42.501329 | 1,213 |
New Study Counters Clovis Comet
“There’s no plausible mechanism to get airbursts over an entire continent,” said Boslough, a physicist. “For this and other reasons, we conclude that the impact hypothesis is, unfortunately, bogus.”
In a December 2012 American Geophysical Union monograph, first available in January, the ... | <urn:uuid:d529a5b3-5f99-4957-a5f5-65cd5a0778c9> | 3.109375 | 1,164 | News Article | Science & Tech. | 25.339508 | 1,214 |
Cold Spring Harbor, NY -- A team co-led by neuroscientists at Cold Spring Harbor Laboratory (CSHL) has shed light -- literally -- on circuitry underlying the olfactory system in mammals, giving us a new view of how that system may pull off some of its most amazing feats.
It has long been known from behavioral experimen... | <urn:uuid:c98ce817-b90b-4a59-9dd0-fbc93439ce4b> | 3.578125 | 385 | News Article | Science & Tech. | 11.826981 | 1,215 |
International Atomic Time
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.
...generated by atomic clocks, which furnish time more accurately than was possible with previous astronomical means (me... | <urn:uuid:53b31c5e-51fa-454d-85a1-18cf32ca13ec> | 3.1875 | 187 | Knowledge Article | Science & Tech. | 44.955313 | 1,216 |
The declining areal cover and thickness of summer ice in the Arctic Sea continues, with 2012 shaping up to be another record-breaking year. Read the BBC summary here. These declines are of course predicted as a consequence of warming air temperatures due to anthropogenic global warming, but what really alarms me is the... | <urn:uuid:6ab4ce27-7611-48b3-a399-c7b486534524> | 2.921875 | 497 | Personal Blog | Science & Tech. | 39.485518 | 1,217 |
- Does global change increase the success of biological invaders?
Trends in Ecology & Evolution, Volume 14, Issue 4, 1 April 1999, Pages 135-139
Jeffrey S. Dukes and Harold A. Mooney
AbstractBiological invasions are gaining attention as a major threat to biodiversity and an important element of global change. Recent re... | <urn:uuid:9978e2e6-d907-421a-abd0-ef43088fb2b5> | 2.6875 | 706 | Content Listing | Science & Tech. | 26.135653 | 1,218 |
This website is no longer being updated. Visit Dartmouth Now for all news published after June 7, 2010.
Dartmouth College Office of Public Affairs • Press Release
Posted 5/10/10 • Media Contact: Office of Public Affairs (603) 646-3661
By using entire islands as experimental laboratories, two Dartmouth biologists have p... | <urn:uuid:68f61f8e-08a4-4451-87a3-616cbebb6771> | 3.046875 | 661 | News (Org.) | Science & Tech. | 31.225908 | 1,219 |
The NetBeans Open Source Story
One of the most interesting places where open source and Java technology overlap is a little integrated development environment (IDE) known as NetBeans. NetBeans' path to open-sourcedom was a circuitous one. In 1996, a group of Czech students set out to author an IDE in pure Java. The ide... | <urn:uuid:7186f7c4-4af9-4e17-8a91-1a13be2ced9e> | 2.765625 | 2,067 | Knowledge Article | Software Dev. | 44.215419 | 1,220 |
Radio-Collaring Elephants in Namibia
with Keith Leggett
Keith Leggett radio-collars enormous elephants in the Namibian desert to find out where they range and roam-and gets help from a BBC film crew.
Attaching a radio-collar to a 5-ton animal is no easy task. Especially if that animal, say, an elephant, has no interest... | <urn:uuid:015f4b05-56f2-4463-8bdd-8e038a204a0f> | 3 | 1,253 | Nonfiction Writing | Science & Tech. | 57.921608 | 1,221 |
In this lesson our instructor gives an introduction to conditional loops. First, he discusses while loop, looping over arrays, and array traversal functions. Then he talks bout looping over indexed and associative arrays. He also lectures on looping over arrays using list() and each(), control structure scope and codin... | <urn:uuid:ed63306a-0c96-488e-bfb0-b477bcdd3fa5> | 3.90625 | 401 | Truncated | Software Dev. | 39.844538 | 1,222 |
Department of Environment and Conservation (NSW), 2005
ISBN: 1 7412 2144 7
7 Previous Recovery Actions
- 7.1 Survey
- 7.2 Profile and environmental impact assessment guidelines
- 7.3 Establishment of a recovery team
- 7.4 Community awareness initiatives
- 7.5 In-situ protection
During the preparation of this recovery p... | <urn:uuid:a1045ccb-eb51-4cc4-a94d-dc699accc8f1> | 2.828125 | 685 | Knowledge Article | Science & Tech. | 36.642847 | 1,223 |
1971: South Pole total ozone data before the ozone hole existed
1986: First year of continuous balloon soundings at the South Pole
1993: Record low total ozone related in part to the Pinatubo volcanic eruption (see below)
2003: This year is an example of contemporary ozone depletion at the South Pole while stratospheri... | <urn:uuid:cd6b19be-644a-46f2-8cee-dd406fe2113b> | 3.625 | 448 | Knowledge Article | Science & Tech. | 15.2595 | 1,224 |
How you get the chameleon of the molecules to settle on a particular "look" has been discovered by RUB chemists led by Professor Dominik Marx. The molecule CH5+ is normally not to be described by a single rigid structure, but is dynamically flexible. By means of computer simulations, the team from the Centre for Theore... | <urn:uuid:1b6a5518-f14f-4416-bbfd-7f1a4f8d6d21> | 2.84375 | 1,072 | News (Org.) | Science & Tech. | 39.376234 | 1,225 |
Pioneering Periodic Arrangements of the ElementsLaws of Triads and of Octaves
Early in the 19th cent., a number of chemists had noticed certain relationships between the properties of elements and their atomic weight. In 1829 J. W. Döbereiner stated that there existed some three-element groups, or triads, in which the ... | <urn:uuid:48d2b0ec-0881-4853-8b34-ed576cb5e8c1> | 3.96875 | 432 | Knowledge Article | Science & Tech. | 42.815686 | 1,226 |
The Night Skies of August: A Convergence of Planets and a Shower of Meteors
by Leo Enright
In the month of August, with longer nights than in July, we have more time to enjoy the view of the great Summer Milky Way, as well as the famous meteor shower of mid-August. This year we have the added bonus of the two brightest... | <urn:uuid:5a639053-f70d-416f-9182-d7aa0abd8c7a> | 2.96875 | 1,557 | Nonfiction Writing | Science & Tech. | 58.832917 | 1,227 |
Mars One is a private sector endeavor to send human beings to Mars. The estimated cost of $6 billion will be raised by selling T-shirts and hosting reality shows. In theory, the mission will launch in 2023. In order to reduce costs, astronauts will not be returned to earth. In other words, this is a one-way trip
There ... | <urn:uuid:5c9c5c12-81c2-4711-90d3-ecf7d346c8fa> | 3.21875 | 427 | Personal Blog | Science & Tech. | 45.291458 | 1,228 |
The Mechanism of Ice Crystal Growth and the Theory of Evolution
by Larry Vardiman, Ph.D.
Presented at the Second International Conference on Creationism, Pittsburgh, Pennsylvania, July 30–August 4, 1990. Published in: Proceedings of the Second International Conference on Creationism, R. E. Walsh & C.L. Brooks (Eds.), p... | <urn:uuid:b71ee758-4184-43a8-aeda-b38138ccf712> | 2.953125 | 249 | Truncated | Science & Tech. | 45.42 | 1,229 |
In GR cosmology, there is a big bang singularity. For every particle, there was only a finite time in the past. During this finite time, only a finite distance may have been reached. This allows to define a horizon of influence for each event — all events which may have had a common cause in the past.
Now, in standard ... | <urn:uuid:a71b4ffa-7bd0-4bc4-9d98-054c6004e4be> | 2.671875 | 377 | Knowledge Article | Science & Tech. | 37.058492 | 1,230 |
absolute value, magnitude of a number or other mathematical expression disregarding its sign; thus, the absolute value is positive, whether the original expression is positive or negative. In symbols, if | a | denotes the absolute value of a number a, then | a | = a for a > 0 and | a | = - a for a < 0. For example, |7|... | <urn:uuid:204faf78-7a3c-464d-bfc3-589035535875> | 4.09375 | 148 | Knowledge Article | Science & Tech. | 41.005726 | 1,231 |
Asexual reproduction is advantageous in allowing beneficial combinations of characteristics to continue unchanged and in eliminating the often vulnerable stages of early embryonic growth. It is found in most plants, bacteria, and protists and the lower invertebrates. In one-celled organisms it most commonly takes the f... | <urn:uuid:85129c65-4f42-4751-964b-bd1cb911ad7b> | 3.9375 | 525 | Knowledge Article | Science & Tech. | 34.113162 | 1,232 |
The French could get a magnificent light show for Bastille Day this weekend thanks to a geomagnetic storm due to hit Earth on Saturday, a U.S. government scientist said.
The storm can generate auroras: waving, colorful lights that appear in the sky.
Joe Kunches, a space scientist for the National Oceanic and Atmospheri... | <urn:uuid:3b45c4ab-2544-4dc8-b1f3-fcc084726da2> | 2.8125 | 382 | News Article | Science & Tech. | 59.242538 | 1,233 |
Life Science: Session 3
Sex Cell Production
What are sex cells?
Sex cells, or gametes, are unique to organisms that reproduce sexually. In animals and plants (fungi are somewhat different in this regard) there are two types of sex cells: male and female. The male sex cells are sperm, while the female sex cells are eggs... | <urn:uuid:f9e1e7fe-748a-47bc-8b98-c404e8206a3d> | 4.21875 | 934 | Knowledge Article | Science & Tech. | 38.077658 | 1,234 |
Dictyostelium discoideum is a soil-living amoeba. A group of 100,000 form a mound as big as a grain of sand.
The hereditary information is carried on six chromosomes with sizes ranging from 4 to 7 Mb resulting in a total of about 34 Mb of DNA, a multicopy 90 kb extrachromosomal element that harbors the rRNA genes, and ... | <urn:uuid:55a0410f-0c0d-49f9-b756-4eb138946ccf> | 3.421875 | 146 | Knowledge Article | Science & Tech. | 47.450708 | 1,235 |
How did the universe get its structure? It was very smooth when it was born, with matter distributed incredibly evenly through space. Now, thanks to the action of gravity over billions of years, it is very lumpy, with dense clusters of galaxies separated by enormous voids.
You can watch the process unfold in a new comp... | <urn:uuid:7db20a43-8164-47dd-bb60-e6830bc0fce4> | 4.03125 | 365 | News Article | Science & Tech. | 28.654511 | 1,236 |
Street Lights Permanently Change the Ecology of Local Bugs
The first “modern” streetlight was lit in London’s Pall Mall in 1807. That night may also have marked the first time a moth found itself trapped in an irresistible spiral around public lighting. Ever since then, streetlights have become a fixture of life in cit... | <urn:uuid:9efd4810-d511-4b1b-91bf-d3a51d07a04c> | 3.453125 | 226 | News Article | Science & Tech. | 31.029741 | 1,237 |
Why do you think you need to double the backslash on Windows? It's not because of Windows, it's because Perl uses the backslash as the escape character.
In your first attempt, Perl was trying to escape "p" and "l", converting regular characters to special characters, but then the path you were trying to reach didn't ex... | <urn:uuid:bbff385c-0973-4ef3-8eb3-ee89522b8b66> | 2.765625 | 438 | Tutorial | Software Dev. | 73.091502 | 1,238 |
Fleshing out the genome
February 04, 2005
Pacific Northwest-led team devises powerful new system for tying genes to vital functions in cells and for comparing molecular makeup of organisms
RICHLAND, Wash. –
Genomics, the study of all the genetic sequences in living organisms, has leaned heavily on the blueprint metapho... | <urn:uuid:3914d9f0-94bb-45c4-9b49-bfcc6a04712c> | 2.90625 | 971 | News (Org.) | Science & Tech. | 20.224504 | 1,239 |
|PostgreSQL 8.2.23 Documentation|
|Prev||Fast Backward||Chapter 42. Overview of PostgreSQL Internals||Fast Forward||Next|
Here we give a short overview of the stages a query has to pass in order to obtain a result.
A connection from an application program to the PostgreSQL server has to be established. The application ... | <urn:uuid:8faf0261-42c7-4668-890f-1d1c3b333f55> | 2.578125 | 419 | Documentation | Software Dev. | 50.638362 | 1,240 |
Aconitase and Iron Regulatory Protein 1May 2007 Molecule of the Month by David Goodsell
doi: 10.2210/rcsb_pdb/mom_2007_5 (PDF Version, ePub Version )
Aconitase is an essential enzyme in the tricarboxylic acid cycle and iron regulatory protein 1 interacts with messenger RNA to control the levels of iron inside cells. Yo... | <urn:uuid:6f14fe68-e0a3-476a-830a-681c8fd8d19b> | 2.84375 | 1,245 | Knowledge Article | Science & Tech. | 42.523925 | 1,241 |
Rings around the Sun
|Tweet|Rings around the Sun Whenever both sun and clouds are in the sky, be sure
to look up--you may behold rings, arcs, and other marvels!
Oct. 24, 2002: It was just after lunch on Sept. 25th when I stepped out onto the rear deck of my home in Ohio. What a gorgeous autumn afternoon. The pale blue ... | <urn:uuid:57ded341-6d8d-427a-a2ee-cb5c8f7e4b97> | 2.875 | 1,547 | Nonfiction Writing | Science & Tech. | 56.879165 | 1,242 |
A leaf is a plant's principal organ of photosynthesis, the process by which sunlight is used to form foods from carbon dioxide and water. Leaves also help in the process of transpiration, or the loss of water vapor from a plant.
A typical leaf is an outgrowth of a stem and has two main parts: the blade (flattened porti... | <urn:uuid:544743de-e584-4ec5-ad1a-bf2f9b92b7ea> | 4.09375 | 1,450 | Knowledge Article | Science & Tech. | 48.272265 | 1,243 |
Oct. 28, 2006 An earthquake swarm -- a steady drumbeat of moderate, related seismic events -- over hours or days, often can be observed near a volcano such as Mount St. Helens in Washington state or in a geothermal region such as Yellowstone National Park in Wyoming.
New research led by a University of Washington seism... | <urn:uuid:37acff95-6f51-4f9f-ae97-37dd0ee21237> | 3.671875 | 609 | News Article | Science & Tech. | 38.807317 | 1,244 |
May 19, 2009 Graphene is an atomically thin sheet of carbon that has attracted significant attention due to its potential use in high-performance electronics, sensors and alternative energy devices such as solar cells. While the physics of graphene has been thoroughly explored, chemical functionalization of graphene ha... | <urn:uuid:ec8af92c-7730-40e3-b4ea-96a90071b777> | 3.1875 | 435 | News (Org.) | Science & Tech. | 10.694184 | 1,245 |
Discovered: Male fish who engage in same-sex flirting lure in female fish; cheese dates back 7.5 millennia; Americans love public transportation once they give it a chance; depressed mice cheer up after brain stimulation.
Gay fish attract more female mates. Nature has its own version of a pop culture archetype—the high... | <urn:uuid:7bb0e61d-f2c7-4bb2-9924-a43fcde6d123> | 2.90625 | 723 | Content Listing | Science & Tech. | 45.130792 | 1,246 |
Book I. Propositions 31 and 32
Back to Propositions 31, 32.
11. Solve the problem of Proposition 31:
Through a given point to draw straight line parallel to a given straight line.
To see the answer, pass your mouse over the colored area.
Let A be the given point, and BC the given straight line;
Choose any point D on BC... | <urn:uuid:ad9c1f8d-de52-4e65-b208-1ca0fb3c3c25> | 3.96875 | 530 | Tutorial | Science & Tech. | 72.056351 | 1,247 |
The latest science, described in the World Bank report “Turn Down the Heat,” indicates that we are heading toward a 4° C warmer world, with catastrophic consequences in this century. While carbon dioxide (CO2) is still the No. 1 threat, there is another category of warming agent called short-lived climate pollutants (S... | <urn:uuid:27df5ad7-cfaa-45dd-9780-199d0aa281ba> | 3.765625 | 322 | News (Org.) | Science & Tech. | 42.763036 | 1,248 |
What happens when you let two bots have a conversation? Cornell researchers Igor Labutov, Jason Yosinski and Hod Lipson find out. Follow the links at the bottom of this post for more about "AI vs. AI."
Laughing babies, talking dogs and Rebecca Black may be Internet sensations, but if you want to add something more subs... | <urn:uuid:8f334ce1-cd67-4c1b-b102-02226b501b74> | 2.59375 | 1,362 | Content Listing | Science & Tech. | 62.630093 | 1,249 |
Cragg, Rohan G. and Bardgett, Richard D. (2001) How changes in animal diversity within a soil trophic group influence ecosystem processes. Soil Biology and Biochemistry, 33 (15). pp. 2073-2081. ISSN 0038-0717Full text not available from this repository.
There are few experimental data on the consequence of varying the ... | <urn:uuid:6411f64e-22a0-4276-a6df-22fe6873c47a> | 2.53125 | 563 | Academic Writing | Science & Tech. | 24.210428 | 1,250 |
This is an image of an unidentified environmental microbial community collected from a shallow subsurface sediment sample. The sample was taken from the Gulf of Mexico at a depth of 575 meters and photographed using a DNA DAPI fluorescent stain. The stain fluoresces blue to count the cells found in the sediment sample.... | <urn:uuid:322de67f-93aa-4dfe-a64b-20f475fa6ef8> | 3.734375 | 749 | Content Listing | Science & Tech. | 30.758945 | 1,251 |
ICON Web & News
Search Using OECD Database
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Addition or Correction
In Situ Synchrotron X-ray Fluorescence Mapping and Speciation of CeO2 and ZnO Nanoparticles in Soil Cultivated Soybean (Glycine max)
Link to Journal Abstract
With the increased use of engineered nanomaterials such as ZnO and CeO2 ... | <urn:uuid:f6844639-952e-49f8-b074-2d30e7c2e568> | 2.703125 | 702 | Academic Writing | Science & Tech. | 43.647634 | 1,252 |
At its distant orbit, Webb is much too far from Earth to be reached by the space shuttle. Webb's science mission length is 5 years with a 10 year goal. To insure the 5 year mission, NASA has engineered the observatory so that all critical subsystems have a backup or will degrade gracefully with age. For instance, the N... | <urn:uuid:ea34cb02-989e-434c-8368-a17e06db2b00> | 3.421875 | 166 | Knowledge Article | Science & Tech. | 48.372647 | 1,253 |
The answer appears to be yes, that we can construct such numbers at present. The techniques that have been used recently have their roots around 1985 when elliptic curves were first applied to cryptography and factorization and when personal computers with RAM by the megabyte became common.
I would like to thank Charle... | <urn:uuid:0e092c1a-3b18-4556-b79e-25340009ab5d> | 2.703125 | 461 | Q&A Forum | Science & Tech. | 35.372676 | 1,254 |
Detection of protandry and protogyny from infructescences
|Sycamore index page|
|Invasive Woody Plants||
As described in the Sex Expression section sycamore trees may be protandrous when their inflorescences start with a sequence of male flowers followed by a sequence of female flowers, or protogynous when the reverse ... | <urn:uuid:d7a8d506-f3eb-48a2-8315-51fb1a7dfd94> | 2.734375 | 897 | Knowledge Article | Science & Tech. | 34.92597 | 1,255 |
Table of Contents
Once you have built and installed a package, you can create a binary package which can be installed on another system with pkg_add(1). This saves having to build the same package on a group of hosts and wasting CPU time. It also provides a simple means for others to install your package, should you di... | <urn:uuid:b0d632bb-6602-4fa1-a933-640d6b1764e1> | 2.578125 | 204 | Documentation | Software Dev. | 50.293713 | 1,256 |
Solar Adaptive Optics Project
Smoothing out the wrinkles in our view of the Sun
Solar scientists face the same challenge as night-time astronomers when observing from the ground: Earth's atmosphere blurs the view. Astronomers speak of being "seeing limited," or restricted to what atmospheric turbulence allows. The turb... | <urn:uuid:7063bc01-3af8-4b61-841f-b1f64d12a3f7> | 3.890625 | 719 | About (Org.) | Science & Tech. | 38.267946 | 1,257 |
Scientists have produced the most extensive map of Arctic sea-ice thickness yet using just two months' worth of data from the European Space Agency's ice mission, CryoSat-2.
Data from the satellite has also helped them create an updated map of ocean circulation in the Arctic, and a topographical relief map of Antarctic... | <urn:uuid:9594179c-de64-49cb-88b5-5d7e5c95636f> | 3.6875 | 895 | News Article | Science & Tech. | 44.43301 | 1,258 |
Major Section: HISTORY
Example: :pe fn ; sketches the command that introduced fn and ; prints in full the event within it that created fn.See logical-name.
Pe takes one argument, a logical name, and prints in full the event
corresponding to the name.
Pe also sketches the command responsible
for that event if the comman... | <urn:uuid:fc6923c6-3f17-4acb-84f4-38c1724a11bc> | 3.328125 | 323 | Documentation | Software Dev. | 71.420293 | 1,259 |
This phenomena has been explained by the Zetas and is thoroughly documented on this blog.
While the "official" cause of such massive fish kills is often attributed to hypoxia (lack of oxygen), what is conveniently excluded in these opaque explanations is that high concentrations of dissolved methane essentially expels ... | <urn:uuid:6b7427b8-34a2-4e75-b0da-eca0f34b3001> | 2.921875 | 1,809 | Personal Blog | Science & Tech. | 73.702063 | 1,260 |
Analyzing the dynamic hydrologic conditions of the Sandhills is critical for water and range management, sustainability of the Sandhills ecosystem as well as for dune stability. There are complex models available to quantify both surface and subsurface hydrological processes. However, we present in this study an applic... | <urn:uuid:09620dee-398a-45d6-8956-597902aea460> | 2.59375 | 313 | Academic Writing | Science & Tech. | 41.621746 | 1,261 |
Parks in this Network
Southwest Alaska Network
The SWAN I&M Program is one of 32 National Park Service I&M Networks across the country established to facilitate collaboration, information sharing, and economies of scale in natural resource monitoring. It is comprised of five national park units, each of which contain a... | <urn:uuid:d9ebb430-62e3-4718-a7b4-1b4c943737f0> | 2.5625 | 135 | About (Org.) | Science & Tech. | 19.139655 | 1,262 |
While our direct knowledge of black holes in the universe is limited to what we can observe from thousands or millions of light years away, a team of Chinese physicists has proposed a simple way to design an artificial electromagnetic (EM) black hole in the laboratory.
In the Journal of Applied Physics, Huanyang Chen a... | <urn:uuid:12fb261f-aaf8-4c03-a222-ea1748e2b5e5> | 4.28125 | 257 | News Article | Science & Tech. | 24.101583 | 1,263 |
Visualization of Model Output
Visualization of output from mathematical or statistical models is one of the best ways to introduce introductory geoscience students to the results and behavior of sophisticated models. Example of good sites include:
- Climate Impact of Quadrupling Atmospheric CO2: An overview of GFDL Cli... | <urn:uuid:e5694ec2-9670-47cc-950c-4f0d29d36030> | 3.03125 | 394 | Content Listing | Science & Tech. | 0.251943 | 1,264 |
Fight the Heat with Deep Impact's Edible Comet
15 Jul 2003
(Source: Jet Propulsion Laboratory)
Newsletter for the Deep Impact mission
Welcome to the nearly 7,000 of you who have told us you want to know more about the Deep Impact mission. We are currently in Phase C/D. During this 34-month period, the twin spacecraft -... | <urn:uuid:1bd8da8a-fb20-425f-98f7-cd482a09a857> | 2.984375 | 1,313 | News (Org.) | Science & Tech. | 59.421098 | 1,265 |
Ladies and Gentlemen,
For this post, I will look at how the Younger Dryas (YD) the most-well researched of the Late Glacial abrupt climate shifts, supposedly cut-off the thermohaline circulation (THC) causing an abrupt cooling event. The THC, also known as the Atlantic Meridional Overturning Circulation (AMOC), is the ... | <urn:uuid:ab04609b-7d4a-4d4d-bc00-b355d6c0b3c6> | 3.484375 | 910 | News (Org.) | Science & Tech. | 50.408079 | 1,266 |
When we last checked in to the Nansen Sea Ice Graphs, it looked like they were heading towards the “normal” line in a hurry. Ice area seems to still be on that trend, while extent seems to be leveling off it’s growth rate. Area appears to be within about 200,000 square kilometers of the 1979-2007 monthly average and st... | <urn:uuid:c47cbe87-f48d-48de-a45a-14b4061cd61b> | 3.421875 | 659 | Knowledge Article | Science & Tech. | 60.164292 | 1,267 |
Conditions were looking bleak at the beginning of May. Only four months of above normal rainfall had occurred in the previous 28 months. The details can be found in a previous blog post (here). Much of the state was in a drought and the situation was getting worse.
Two events happened to change the course of the drough... | <urn:uuid:55509c13-826c-4156-8328-e04de01e39a2> | 2.671875 | 929 | Personal Blog | Science & Tech. | 77.36063 | 1,268 |
Revision 1 as of 2005-11-07 20:34:54
converted to 1.6 markup
|No differences found!|
WhiteSpace Handling in the XSL FO spec
Some thoughts about the concerns
The FO spec must address the following three concerns:
- What to do with linefeed characters in the input: consider as space or as a real linefeed?
- What to do wi... | <urn:uuid:d81e5a1b-9ec9-4ffa-900f-c56314afa56d> | 2.734375 | 1,047 | Documentation | Software Dev. | 45.049716 | 1,269 |
By Irene Klotz
CAPE CANAVERAL, Florida (Reuters) - NASA on Monday showed off the first high-resolution, color portrait images taken by the Mars rover Curiosity, detailing a mound of layered rock where scientists plan to focus their search for the chemical ingredients of life on the Red Planet.
The stunning images revea... | <urn:uuid:1ba81d91-6603-438c-97a2-11f027df325d> | 3.0625 | 838 | News Article | Science & Tech. | 44.096597 | 1,270 |
The Acoustic Search
In the field
ARU mounted on a tree (left) with its battery (right). Photo by Chris Tessaglia-Hymes
To search for acoustic evidence for Ivory-billed Woodpeckers in Arkansas and other states within the historical range, we record ambient sounds using autonomous recording units (ARUs). ARUs are program... | <urn:uuid:77b0bbf8-c845-462a-bae9-2a7692b39098> | 3.21875 | 1,193 | Knowledge Article | Science & Tech. | 34.158975 | 1,271 |
Campus: CSU Long Beach -- October 11, 2002
CSU Campuses Share $170,000 National Science Foundation
The fluid evolution of the earth’s crust and origins of valuable
deposits are just a few of the areas that geological sciences faculty
members at the California State University, Long Beach and Fullerton
campuses will be ... | <urn:uuid:7ea6754b-2f54-4648-be6a-b84427db4010> | 2.78125 | 826 | News (Org.) | Science & Tech. | 38.035833 | 1,272 |
Scientists find evidence of ancient lake on Mars
Layered rocks on the floor of McLaughlin Crater on Mars show sedimentary rocks that contain spectroscopic evidence for minerals formed through interaction with water. Photo: Reuters/NASA
A spacecraft orbiting Mars has provided evidence of an ancient crater lake fed by gr... | <urn:uuid:4f9a692e-7e2f-4aae-aa56-460e5fa84af7> | 3.953125 | 418 | News Article | Science & Tech. | 25.352129 | 1,273 |
How the universe is erasing evidence of its beginnings and moving faster toward its end
In 1917, on the third floor of an apartment building in the Wilmersdorf borough of wartime Berlin, an ailing tenant named Albert Einstein sat focused on a lofty subject: the universe. In February of that year, he published a paper t... | <urn:uuid:71948182-97de-405f-ad9e-6111c2afa6e1> | 3.765625 | 2,494 | Knowledge Article | Science & Tech. | 43.823468 | 1,274 |
To develop an application with SYMPHONY, you need to first understand how the source files are organized. Note that in this chapter, all path names are given Unix-style. When you unpack the SYMPHONY source distribution, you will notice at the root level a number of files associated with the automatic configuration syst... | <urn:uuid:90e870ef-19d9-452a-a2f7-b5ca279f1c2a> | 2.625 | 430 | Documentation | Software Dev. | 32.309235 | 1,275 |
One method for verification of correctness is to compare algorithm implementations to STL sort for assurance of equivalent results, but that assumes STL sort is correct. To not rely on correctness of STL sort requires implementing a correctness test for sorting algorithms. Correctness requires that array[i] ≤ array[i+1... | <urn:uuid:65f4c07c-fb2f-4325-beb3-21abc9c0b1bb> | 3.171875 | 445 | Documentation | Software Dev. | 53.377581 | 1,276 |
For more information on the Concurrency Runtime Framework, see Concurrency Runtime: The Resource Manager.
Visual C++ 2010 comes with new features and enhancements to simplify more native programming. The Concurrency Runtime (CRT), for instance, is a framework that simplifies parallel programming and helps you write rob... | <urn:uuid:a8560120-dd89-457c-91b5-f91cc2a65d44> | 3.0625 | 914 | Documentation | Software Dev. | 20.351805 | 1,277 |
are gamma rays?
A gamma ray is a packet
of electromagnetic energy--a photon. Gamma photons are
the most energetic photons in the electromagnetic
spectrum. Gamma rays (gamma photons) are emitted from
the nucleus of some unstable (radioactive) atoms.
What are the properties
of gamma radiation?
Gamma radiation is very
rad... | <urn:uuid:b21545f5-462d-4679-b8fb-a45f9d675683> | 4.0625 | 1,048 | Knowledge Article | Science & Tech. | 41.566987 | 1,278 |
"That's not what I meant": human communication is fraught with misinterpretation. Written out in longhand, words and letters can be misread. A telegraph clerk can mistake a dot for a dash. Noise will always be with us, but at least a new JQI (*) device has established a new standard for reading quantum information with... | <urn:uuid:36bff55d-91aa-43fb-ad89-0f9a2f3528c4> | 2.984375 | 2,242 | Content Listing | Science & Tech. | 47.581177 | 1,279 |
Choosing between constructor and setter methods
While the use of constructor helps in initializing the member variables during object creation. The setter methods help to assign values to member variables after the object has been created in the memory. The choice of constructor or setter methods for initializing the m... | <urn:uuid:f00d4844-f4dc-4bff-b892-8cd6af25a1bc> | 3.671875 | 445 | Customer Support | Software Dev. | 29.251919 | 1,280 |
I am looking through a piece of code and I cannot figure out what this does. I have seen it in other code but as I am just learning java, I was hoping someone could tell me about it. Here is the code snipet:
line = line.replaceAll("\t", " ");
My question is what does \t do in Java??? | <urn:uuid:1f31e17e-4422-4abf-b612-a066006dd45a> | 2.875 | 76 | Q&A Forum | Software Dev. | 79.939868 | 1,281 |
Posted by Physics fail on Friday, January 25, 2013 at 5:28pm.
An electron experiences 1.2 x 10^-3 force when it enters the external magnetic field, B with a velocity v. What is the force experienced by the electron if the magnetic field is increased two times and the velocity is decreased to half?
Any help would be gre... | <urn:uuid:fec66674-d3b5-4042-9a3a-3d315ac56f72> | 2.65625 | 83 | Q&A Forum | Science & Tech. | 63.924118 | 1,282 |
0 for the most recent generation, 1 for the most recent two generations, and so on up to a maximum (usually 3). Numbers outside this range signal an error.
is used to garbage-collect a specified generation of storage (and all lower generations). A call to this function forces the garbage collector to scan the specified... | <urn:uuid:7f41e3d2-ae89-48d7-ace5-56c75d821ec2> | 2.578125 | 195 | Documentation | Software Dev. | 33.693407 | 1,283 |
Students can learn how geologists use stratigraphy, the study of layered rock, to understand the sequence of geological events. As students watch baking soda-vinegar "lava" flow from their clay volcanoes, they will see that the lava follows different paths. They will also learn how to distinguish between older and newe... | <urn:uuid:99ce2c1f-fbae-47e1-a402-ab298e242ee3> | 3.75 | 95 | Tutorial | Science & Tech. | 39.331667 | 1,284 |
Two Cars in 2-Dimensional Collision
Collisions between objects are governed by laws of momentum and energy. When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. Provided that there are no net external forces acting upon the objects, the momentum of all objects before ... | <urn:uuid:c8a8aa99-0acb-4aa2-bee7-a3bc9ac7397b> | 4.28125 | 704 | Tutorial | Science & Tech. | 48.962724 | 1,285 |
Daniel Botkin, emeritus professor of ecology at UC Santa Barbara, argues in the Wall Street Journal (Oct 17, page A19) that global warming will not have much impact on life on Earth. We’ll summarize some of his points and then take our turn:
Botkin: The warm climates in the past 2.5 million years did not lead to extinc... | <urn:uuid:e427ac79-68aa-493b-b504-a5492682a6f8> | 2.96875 | 740 | Comment Section | Science & Tech. | 52.143282 | 1,286 |
Last week we proposed a bet against the “pause in global warming” forecast in Nature by Keenlyside et al. and we promised to present our scientific case later – so here it is.
This is why we do not think that the forecast is robust:
Figure 4 from Keenlyside et al ’08. The red line shows the observations (HadCRU3 data),... | <urn:uuid:f973850b-0d59-4abe-934c-cc3630e05790> | 2.8125 | 1,921 | Academic Writing | Science & Tech. | 45.906641 | 1,287 |
Parasitic Wasp Genome Released
Parasitic wasps kill pest insects, but their existence is largely unknown to the public. Now, scientists led by John H. Werren, professor of biology at the University of Rochester, and Stephen Richards at the Genome Sequencing Center at the Baylor College of Medicine have sequenced the ge... | <urn:uuid:47f59705-072b-4333-866a-a93859662fdf> | 3.328125 | 1,240 | News Article | Science & Tech. | 27.326861 | 1,288 |
Nov. 25, 2002 Molting, that periodic ritual in which arthropods shed and replace their outer skeletons, can be a dangerous time for the creatures. Just ask the trilobite.
Research published by a Michigan State University paleontologist suggests that an inconsistent molting style, coupled with inefficient physiology, co... | <urn:uuid:4e44e283-1fe3-45ab-800e-b3627b92a0bb> | 3.6875 | 810 | News Article | Science & Tech. | 27.495217 | 1,289 |
Mar. 13, 2010 New studies of ripples and dunes shaped by the winds on Mars testify to variability on that planet, identifying at least one place where ripples are actively migrating and another where the ripples have been stationary for 100,000 years or more.
Patterns of dunes and the smaller ripples present some of th... | <urn:uuid:5833fe27-0dfb-4e21-90b8-da2378972590> | 3.453125 | 917 | News Article | Science & Tech. | 41.079683 | 1,290 |
May 21, 2010 Researchers at Spain's Centre for Genomic Regulation (CRG) demonstrate evidence in support of the common ancestry of life, thanks to a new computational approach to study protein evolution.
The work, published in Nature, takes its inspiration from the astronomer Edwin Hubble and uses his approach to study ... | <urn:uuid:437c84e0-4d2f-4478-9de1-d386b61601c9> | 3.5625 | 854 | News (Org.) | Science & Tech. | 25.070384 | 1,291 |
When we drive somewhere new, we navigate by referring to a two-dimensional map that accounts for distances only on a horizontal plane. According to research published online in August in Nature Neuroscience, the mammalian brain seems to do the same, collapsing the world into a flat plane even as the animal skitters up ... | <urn:uuid:87a08e2d-8f6c-4dcb-b8cb-c5fc52364d4f> | 4 | 430 | News Article | Science & Tech. | 38.159249 | 1,292 |
String theorists had looked at the idea of confining all forces to a brane and having gravity leak, but they had not worked out the mechanism, says physicist Joseph Lykken of Fermilab in Batavia, Ill. Randall and Sundrum, he remarks, "changed people's thinking about this stuff entirely."
As Randall and Sundrum refined ... | <urn:uuid:43937958-3187-45a2-8098-1365406af8dd> | 2.515625 | 871 | Truncated | Science & Tech. | 54.907341 | 1,293 |
By: Michael Collins -EnviroReporter.com
Millions of Southern Californians and tourists seek the region’s famous beaches to cool off in the sea breeze and frolic in the surf. Those iconic breezes, however, may be delivering something hotter than the white sands along the Pacific: Buckyballs.
According to a recent UC Dav... | <urn:uuid:744f17af-4062-4811-9556-906e9b26d521> | 3.09375 | 3,538 | News Article | Science & Tech. | 38.131996 | 1,294 |
I have written the MATLAB code according to the algo given in he tutorials for edge detection.
Edge detection is a technique to locate the edges of objects in the scene. This can be useful for locating the horizon, the corner of an object, white line following, or for determing the shape of an object. The algorithm is ... | <urn:uuid:7ec9a08b-9de3-4992-90e5-5a26bd770fbb> | 2.828125 | 349 | Comment Section | Software Dev. | 44.770238 | 1,295 |
break and continue Statements
The break statement is used to alter the flow of control. When a break statement is executed in a while loop, for loop, do-while loop or switch statement, it causes immediate exit from that statement. Program execution continues with the next statement. Common uses of the break statement a... | <urn:uuid:c4089a04-e956-4919-b52d-316c81c240df> | 4.3125 | 240 | FAQ | Software Dev. | 45.731673 | 1,296 |
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Bacteria in termite gut... | <urn:uuid:78d4bdd4-5927-4e46-aae7-d92866dd56a2> | 2.703125 | 232 | Content Listing | Science & Tech. | 42.179545 | 1,297 |
Miscellaneous changes to java.net worth mentioning:
Noteworthy bug fixes:
A bug existed in JDK1.0.2 where one could not create an InetAddress
out of a IP address String (e.g., "22.214.171.124") if a corresponding
host name (e.g., "java.sun.com") could not be found. This resulted in
an UnknownHostException. The bug is f... | <urn:uuid:3b53b20b-9e03-4c6a-80cd-324498e06f28> | 2.53125 | 450 | Documentation | Software Dev. | 55.310407 | 1,298 |
Birds dive for food despite sub-zero temperatures
On the upper Chena River in the heart of a cold winter, a songbird appeared on a gravel bar next to gurgling water that somehow remained unfrozen in 20-below zero air. Then the bird jumped in, disappeared underwater, and popped up a few feet upstream.
The bird continued... | <urn:uuid:7bc6ad2e-a0af-4fa5-9c03-53867c7065f7> | 3.5 | 812 | Truncated | Science & Tech. | 56.769516 | 1,299 |