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tagged by: clean code
Often designs techniques are used to make a system more flexible, but end up being harder to work with. One of the reasons is that explicitness is a property that often gets forgotten in design.
Guidelines on when to make a new user defined type (or class) for values.
The term 'command query separ... | <urn:uuid:ffeaeea3-ab10-4322-8292-04a128ede0b1> | 2.546875 | 651 | Content Listing | Software Dev. | 50.974334 | 3,400 |
See also the
Browse High School Calculus
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Maximizing the volume of a box.
Maximizing the volume of a cylinder.
Volume of a tank.
What is a derivative?
- The Logistic Model for Population Growth [03/29/... | <urn:uuid:41732b36-cd26-428a-b815-1a8934ddaa8a> | 2.546875 | 2,180 | Q&A Forum | Science & Tech. | 69.346022 | 3,401 |
Scientists in an increasing number of fields are doing science in new ways, exploiting powerful new data-collection technologies with the aid of computational methods and a little humility.
Tradition demands that science always be hypothesis-driven: First, try to guess the truth, and only afterward collect experimental... | <urn:uuid:8187fd45-93d3-4378-9c6e-013366ec4da7> | 3.46875 | 525 | Personal Blog | Science & Tech. | 28.285446 | 3,402 |
Specifies the execution states of a Thread.
This enumeration has a FlagsAttribute attribute that allows a bitwise combination of its member values.
Assembly: mscorlib (in mscorlib.dll)
|The thread has been started, it is not blocked, and there is no pending ThreadAbortException.|
|The thread is being requested to stop.... | <urn:uuid:4e463226-c495-499d-99ed-55cbc486619a> | 2.828125 | 853 | Documentation | Software Dev. | 56.402926 | 3,403 |
Adult butterfly feeding-nectar flower associations: constraints of taxonomic affiliation, butterfly, and nectar flower morphology
Tiple, Ashish D.; Khurad, Arun M.; Dennis, Roger L.H.. 2009 Adult butterfly feeding-nectar flower associations: constraints of taxonomic affiliation, butterfly, and nectar flower morphology.... | <urn:uuid:5a2c1fc6-0115-43f5-a553-85ba6308c63c> | 2.53125 | 407 | Academic Writing | Science & Tech. | 20.045427 | 3,404 |
Mission Plan - Windows to the Deep
Exploration of the Blake Ridge
Dr. Carolyn Ruppel, Co-Chief Scientist
Georgia Institute of Technology
The cold seeps on the Blake Ridge and Carolina Rise are located several hundred kilometers offshore of the Southeastern U.S. These seeps act as vents for methane that originates in th... | <urn:uuid:d6303909-5098-4795-b6f2-5ce33635290f> | 3.625 | 813 | Knowledge Article | Science & Tech. | 28.293371 | 3,405 |
(PhysOrg.com) -- The eventual failure of metals, such as the aluminum in ships and airplanes, can often be blamed on breaks, or voids, in the material's atomic lattice. They're at first invisible, only microns in size, but once enough of them link up, the metal eventually splits apart.
Cornell engineers, trying to bett... | <urn:uuid:3e74d182-1bc6-42bb-86cd-c79173b5e897> | 3.453125 | 369 | News Article | Science & Tech. | 25.089873 | 3,406 |
Tropical Storm "Robyn" didn't have to fly south for the northern hemisphere winter, like the birds (Robins), it formed in the southern hemisphere this past weekend in the Southern Indian Ocean. Infrared satellite imagery from NASA's Aqua satellite revealed that the storm's strong thunderstorms and heavy rainfall are sa... | <urn:uuid:7f55ddfd-2def-41f2-b933-925f33d8146a> | 3.234375 | 484 | News Article | Science & Tech. | 43.422622 | 3,407 |
How lasers really work
May 1, 2008
Researchers in Switzerland and the US have developed a new theoretical framework for describing a wide range of lasers — including unconventional systems called diffusive random lasers, which had hitherto defied a complete explanation. Their theory could open the door for unconvention... | <urn:uuid:7e86ec8a-2dd7-48e9-ae4e-1bcd97d431e0> | 4.0625 | 892 | News Article | Science & Tech. | 32.163907 | 3,408 |
Secchi Disk Depth
One of the most commonly used measurements for water clarity is the Secchi disk depth (pronounced she SEHK-ki) . The Secchi disk is a simple and inexpensive device used by both citizens and scientists for measuring water clarity.
The device generally consists of a 20-centimeter (8-inch) disk made of w... | <urn:uuid:cfe021db-1725-4711-bdf6-abb6086e2367> | 3.359375 | 175 | Knowledge Article | Science & Tech. | 52.005 | 3,409 |
This article is also available as a podcast.
A Gömböc is a strange thing. It looks like an egg with sharp edges, and when you put it down it starts wriggling and rolling around with an apparent will of its own. Until quite recently, no-one knew whether Gömböcs even existed. Even now, Gábor Domokos, one of their discove... | <urn:uuid:bb19bb87-eb38-4fc9-a502-6ccfa3cb9c75> | 3.46875 | 3,742 | Nonfiction Writing | Science & Tech. | 49.052968 | 3,410 |
SCIENTISTS DISCOVER A NEW JELLYFISH SPECIES AND FAMILY – “PINK MEANIE’ MAKES COVER OF BIOLOGICAL BULLETIN
Jan 10, 2011
Dauphin Island Sea Lab scientist Dr. Keith Bayha, while working alongside Dr. Michael Dawson at the University of California Merced, has discovered that the jellyfish Drymonema, commonly called the ‘pi... | <urn:uuid:5c78f483-6261-46f6-babb-488348749a30> | 3.078125 | 745 | News (Org.) | Science & Tech. | 31.258983 | 3,411 |
Introduction to How DNA Works
Like the one ring of power in Tolkien's "Lord of the Rings," deoxyribonucleic acid (DNA) is the master molecule of every cell. It contains vital information that gets passed on to each successive generation. It coordinates the making of itself as well as other molecules (proteins). If it i... | <urn:uuid:1be9384a-14e4-4c1c-97c1-12da387aa351> | 3.90625 | 633 | Knowledge Article | Science & Tech. | 41.60362 | 3,412 |
Family: LYCAENIDAE (Coppers, Hairstreaks and Blues)
A relatively small butterfly, the Melissa Blue is about an inch in wingspan. The sexes are dimorphic, meaning each sex has its own color. Males are a beautiful blue while females are brown. A distinguishing characteristic is the red-orange submarginal row of scales in... | <urn:uuid:824fee9f-e357-4e1e-a58c-58a3d62f7224> | 3.40625 | 226 | Knowledge Article | Science & Tech. | 43.182504 | 3,413 |
To understand a star, you need to know how far away it. Its distance reveals how big and bright it is, for example, which helps reveal what’s happening inside the star.
But measuring astronomical distances is tough. You can’t drive out to a star and measure the miles as they click by. Instead, astronomers have develope... | <urn:uuid:7c7f65f1-3328-4bd3-9287-8290282af0bb> | 4.03125 | 373 | Knowledge Article | Science & Tech. | 56.351425 | 3,414 |
This is what climate change looks like - drought, unprecedented wildfires, freak storms and severe heat.
The evidence continues to mount that the strange and extreme weather the nation and world is encountering in this second decade of the 21st century is not just some quirky deviation from the norm. Rather it is a sig... | <urn:uuid:ada1c77c-47a3-43c6-98c6-b557d37d5e9f> | 3.71875 | 479 | News Article | Science & Tech. | 34.408933 | 3,415 |
Human-forced climate change has already many effects that are visible today. An article that appears in today’s Science introduces another candidate: trees in the Western U.S. are living only half as long as they did 50 years ago. In the climate most of us grew up in, western forests acted as carbon sinks. Their growth... | <urn:uuid:5665b7d7-99fd-43ff-87e6-1b3b60f484e9> | 3.5625 | 817 | Personal Blog | Science & Tech. | 48.739123 | 3,416 |
European Space Agency
|Primary spaceport||Guiana Space Centre|
|Budget||€4.28 billion / £3.64 billion / US$5.51 billion (2013)1|
|Official language(s)||English, French and German2|
The European Space Agency (ESA) (French: l'Agence spatiale européenne - ASE; German: Europäische Weltraumorganisation) is an intergovernmen... | <urn:uuid:31b5b24c-150b-49c8-98c6-de077cdafae3> | 3.03125 | 10,172 | Knowledge Article | Science & Tech. | 50.439484 | 3,417 |
October 13, 2006
An innovative process that converts low-energy longwave photons (light particles) into higher-energy shortwave photons has been developed by a team of researchers at the Max Planck Institute for Polymer Research in Mainz and at the Sony Materials Science Laboratory in Stuttgart. With the skillful combi... | <urn:uuid:1ebfd045-55ce-4fa3-8355-24685cafd1c7> | 3.4375 | 146 | News (Org.) | Science & Tech. | 21.314534 | 3,418 |
Octopuses evolved as Antarctica froze
Colder Antarctic waters drove the evolution of deep sea octopuses, suggests new research.
Australian researcher Dr Jan Strugnell of Queen's University Belfast and the British Antarctic Survey says the formation of ocean currents around the continent millions of years ago provided t... | <urn:uuid:9f37e864-e5f8-4101-9ba0-33b9770ec9c6> | 4.0625 | 496 | News Article | Science & Tech. | 31.86038 | 3,419 |
Science subject and location tags
Articles, documents and multimedia from ABC Science
Tuesday, 3 August 2010
Australia's waters have been ranked as being the most biologically diverse in the world, yet up to 80% of the species in it have yet to be discovered, a new study has shown.
Friday, 23 July 2010
Sphagnum moss us... | <urn:uuid:d4f08e45-fa24-4a6e-a7f0-204b037bc2b2> | 2.5625 | 215 | Content Listing | Science & Tech. | 38.624814 | 3,420 |
The Sun and its Effects
In this section you will find materials that support the implementation of EarthComm Florida, Section 7: The Sun and its Effects.
- To learn more about daily solar activity, visit the following web sites:
What’s Up in Space, Spaceweather
Get the most recent information about solar flares, sunspo... | <urn:uuid:0cda5017-8fec-445a-8c78-1f31c2bce2f3> | 3.5625 | 829 | Content Listing | Science & Tech. | 31.410578 | 3,421 |
June 21, 2010
FOR IMMEDIATE RELEASE
A crack in the case for supersolids
Reports of supersolid helium may have been premature
Physicists have long known that helium can become a superfluid at low temperatures, allowing it to flow completely friction free, spontaneously climb walls, and exhibit other counterintuitive cha... | <urn:uuid:213fe21c-c823-48d2-9008-4b2eb3efc033> | 3.828125 | 546 | News (Org.) | Science & Tech. | 28.394612 | 3,422 |
|This fire-breathing Dragon can fly. Pictured above yesterday, SpaceX Corporation's Falcon 9 rocket capped with a Dragon spacecraft lifted off from Cape Canaveral, Florida, USA. The successful launch was significant not only because it demonstrated that a private company has the ability to re-supply the International S... | <urn:uuid:a229673b-38bd-4ad1-b612-d63ce9a49ff1> | 2.875 | 196 | Truncated | Science & Tech. | 38.912883 | 3,423 |
Comet color and you
March 2013: Take this month's observing opportunity to test out your eyes’ color receptors.
January 28, 2013
|Red sensitive? Blue sensitive? How perceptive are your eyes to the colors of astronomical objects? One way to find out is to observe newly discovered Comet C/2011 L4 (PANSTARRS) with friends... | <urn:uuid:714a68cd-1048-474c-aee4-97729bcf616d> | 3.109375 | 340 | Truncated | Science & Tech. | 52.913293 | 3,424 |
In order to calculate the distance from two points in polar coordinates, we use the polar coordinates distance formula. In order to derive the polar coordinates distance formula, we use the law of cosines. We can also use the polar coordinates distance formula to help us come up with the polar equation for a circle cen... | <urn:uuid:45273f7a-aea4-4faf-b9f6-cf76da11ec13> | 4.125 | 450 | Tutorial | Science & Tech. | 70.46177 | 3,425 |
What is it about Enceladus? I doubt anyone would have thought the tiny moon would weigh so heavily in our thinking about Saturn before Cassini, but now comes the news that Enceladus is distorting the planet’s magnetic field to the point that it becomes tricky to measure the length of the Saturnian day. Count the electr... | <urn:uuid:21010772-60ee-4a5c-98a6-da146100b4ef> | 4.21875 | 573 | Knowledge Article | Science & Tech. | 43.759088 | 3,426 |
The leggiest animal in the world, the millipede lllacme plenipes, was re-discovered several years ago in California by Paul Marek. Now, Marek and his colleagues provide further details of the surprisingly complex anatomy of this diminutive creature and its extreme rarity, limited to a handful of spots just south of San... | <urn:uuid:1fc355c2-ecae-4e31-865f-a3808f912770> | 3.625 | 997 | News (Org.) | Science & Tech. | 29.391998 | 3,427 |
What is Copyleft?
Copyleft is a general method for making a program (or other work) free, and requiring all modified and extended versions of the program to be free as well.
The simplest way to make a program free software is to put it in the public domain, uncopyrighted. This allows people to share the program and the... | <urn:uuid:9b4aa105-c516-4a9e-b057-304fdc530ae4> | 3.546875 | 1,063 | Knowledge Article | Software Dev. | 43.058114 | 3,428 |
By Helen Taylor/Nature Conservancy
Tiny mussels that wash up on beaches and attach to boats, piers and underwater pipes. Mats of vegetation that blanket lakes and take the fun out of boating, fishing and water-skiing. Tall grasses that invade shorelines, blocking lake views.
In the Great Lakes states, we’ve read about ... | <urn:uuid:65458bdf-307b-4101-b4eb-70959ff7b791> | 3.0625 | 757 | Nonfiction Writing | Science & Tech. | 36.596393 | 3,429 |
Below are the first 10 and last 10 pages of uncorrected machine-read text (when available) of this chapter, followed by the top 30 algorithmically extracted key phrases from the chapter as a whole.
Intended to provide our own search engines and external engines with highly rich, chapter-representative searchable text o... | <urn:uuid:0326e1c1-5d2b-42cb-81b4-54ef9653564b> | 2.9375 | 1,419 | Content Listing | Science & Tech. | -0.207061 | 3,430 |
Solar Plasma Swirls, Erupts
A prominence composed of solar plasma just behind the edge of the Sun, rose up and swirled around for many hours, then burst away into space over about a one-day period (Nov. 18-19, 2012). Unseen magnetic fields, mostly above this area, are the driving forces behind the event. This action wa... | <urn:uuid:fa6c682c-6ac7-4670-bf1a-82fde87b32ce> | 2.78125 | 118 | Truncated | Science & Tech. | 43.787261 | 3,431 |
Date: Around 1993
I have heard that supposed "space plane prototype" that flew over
California and Denmark, and a few other countries. I read an article which
said that it used an engine which ran on liquid methane. Is this the same as
methanol in cars? Also, is this plane's engine a Scramjet (what is this
engine about... | <urn:uuid:0d12f3eb-9a70-4e61-956c-25149f2b6611> | 2.734375 | 142 | Knowledge Article | Science & Tech. | 50.786962 | 3,432 |
Summary: Mathematical Geology, Vol. 37, No. 8, November 2005 ( C 2005)
Tetrahedral Plots of the Phase Relations for Basalts1
and Richard N. Abbott, Jr.3
The phase relations of quaternary systems are generally represented by projections onto ternary
compositional planes. Such projections often obscure relationships that... | <urn:uuid:a732d997-747e-4c26-a172-da12abecfc88> | 3.234375 | 296 | Academic Writing | Science & Tech. | 17.218214 | 3,433 |
Search our database of handpicked sites
Looking for a great physics site? We've tracked down the very best and checked them for accuracy. Just fill out the fields below and we'll do the rest.
You searched for
We found 6 results in our database of sites
6 are Websites,
0 are Videos,
and 0 are Experiments)
Search results... | <urn:uuid:20e5e0c7-407e-47f0-b881-a6ae9ea3b47e> | 3.203125 | 279 | Content Listing | Science & Tech. | 46.258456 | 3,434 |
April 28, 2004
Effect of Fires on Saltcedar Growth
The Effect of Bosque Fires on Saltcedar Growth
Rachel Clements, 14, Albuquerque, N.M.
Leah Crowder, 14, Albuquerque, N.M.
Finalists, Discovery Channel Young Scientist Challenge, 2003
Project background: Saltcedar trees are a non-native, invasive species that drink up t... | <urn:uuid:9ff2d151-f1fa-45c5-98ef-6464439941c9> | 3.375 | 349 | News Article | Science & Tech. | 49.425349 | 3,435 |
This web site provides users with visual tools for learning topics taught in a typical engineering thermodynamics class. Animations, interactive simulations, practical problems with online solutions, and illustrated explanations are available. The animations and interactive modules illustrate basic thermodynamic concep... | <urn:uuid:e6487250-2ff3-44f0-809a-1e9a76be42e4> | 3.09375 | 262 | Content Listing | Science & Tech. | 21.489375 | 3,436 |
Contributing authors document and analyze forest dcline in Europe and the Eastern United States, as well as ozone’s injury to California’s pines.
The scientific evidence is growing that air pollution – primarily ozone and acid deposition – is causing extensive damge to vegetation in both Europe and the United States. U... | <urn:uuid:9a727510-1b09-4ec3-9242-4724e5339056> | 3.0625 | 254 | Truncated | Science & Tech. | 16.287157 | 3,437 |
What's the Latest Development?
America, 2012; Texas, 2011; Russia, 2010; Europe, 2003. These are the heat waves and droughts that scientists now say were directly caused by global warming, itself a result of greenhouse gases produced by human activity. Published Monday in the Proceedings of the National Academy of Scie... | <urn:uuid:225e906a-df76-4355-8ede-720e7aec2951> | 3.625 | 283 | News Article | Science & Tech. | 56.688831 | 3,438 |
Well, that didn’t take long.
As you may recall, there’s something of a controversy stemming from the National Hurricane Center’s decision to not issue hurricane warnings for Sandy north of North Carolina.
Three days before landfall, believing Sandy would transition into a non-tropical system more like a winter storm be... | <urn:uuid:7a3a8854-6301-47cf-b151-be4470101021> | 2.65625 | 417 | News Article | Science & Tech. | 21.720127 | 3,439 |
What’s the News: Biologists have discovered an eel so bizarre that they didn’t initially know if it was an eel or some other kind of fish. The strange creature, dubbed Protoanguilla palau after a researcher found it in an undersea cavern off the coast of Palau, has very few of the anatomic features of modern eels, but ... | <urn:uuid:cb0109c3-59d8-4b8f-8e02-71d318cf5257> | 3.53125 | 603 | News Article | Science & Tech. | 45.004483 | 3,440 |
Restoring and joining up habitat will prevent the UK’s threatened butterflies and moths from becoming extinct in the future.
Our latest report provides concrete evidence that projects aimed at conserving butterflies and moths at a landscape-scale have enabled threatened species to flourish after decades of decline. A l... | <urn:uuid:df34d0f8-f231-4adb-bd66-19ec3c1a13cc> | 3.453125 | 509 | News (Org.) | Science & Tech. | 26.501342 | 3,441 |
What is the meaning of the decimal point?
Here is an illustration of the most common answer in my class (a math content course for prospective elementary and special ed teachers):
Thinking of the decimal point as the border between whole numbers and decimals limits our ability to think about relationships between these... | <urn:uuid:560400e3-6e83-42b5-b3d2-373e861ff13e> | 3.6875 | 292 | Personal Blog | Science & Tech. | 53.309306 | 3,442 |
Conservation Drones Teaser
The mission of this website is to share our knowledge for building low-cost Conservation Drones to help conservation workers and researchers in developing countries do their jobs a lot more effectively and cost efficiently.
Of course, we recognize that there are highly sophisticated commercia... | <urn:uuid:2acdae99-7985-4f43-9147-f72c74c51d3f> | 2.96875 | 452 | About (Org.) | Science & Tech. | 23.047099 | 3,443 |
Non-native to Chesapeake Bay; invasive
- Family - Hydrocharitaceae
- Distribution - Hydrilla is an exotic species introduced
from southeast Asia which first appeared in United States during 1960's. Today
it is found in most of the southeastern United States, westward to California.
Hydrilla was first observed in 1982 i... | <urn:uuid:e33140fa-ddc0-45a4-aabf-b8cc87cc06ba> | 3.625 | 796 | Knowledge Article | Science & Tech. | 41.061922 | 3,444 |
GPath is a path expression language we've integrated into Groovy which is similar in aims and scope as XPath is to XML.
1. Expression language for tree structured data
2. Implementations for XML
3. Can specify a path to an element
a.b.c -> all the <c> elements inside <b> inside <a>
4. Can specify attributes
a"@href" ->... | <urn:uuid:e05d31e6-2f55-4a9c-b561-0b08b40309d9> | 2.640625 | 250 | Documentation | Software Dev. | 72.455622 | 3,445 |
Perri, E. and Tucker, M. E. (2007) 'Bacterial fossils and microbial dolomite in Triassic stromatolites.', Geology., 35 (3). pp. 207-210.
Triassic stromatolitic dolomite from Italy preserves mineralized bacterial remains, one of the first unequivocal identifications of such structures in the geological record. They cons... | <urn:uuid:f80480c8-af77-4cd4-925a-e01ef2132035> | 2.734375 | 402 | Academic Writing | Science & Tech. | 31.241667 | 3,446 |
- (US) IPA: /ləˈbɛːɡ ˈɪntəɡrəl/, /ləˈbɛːɡ ˈɪntəɡrl̩/
Lebesgue integral (plural Lebesgue integrals)
- (analysis, singular only (the Lebesgue integral) and countable) An integral which has more general application than that of the Riemann integral, because it allows the region of integration to be partitioned into not ju... | <urn:uuid:75e60f75-f0c1-4e83-8160-9660583ef38f> | 2.828125 | 194 | Knowledge Article | Science & Tech. | 32.622602 | 3,447 |
Restoration of Fish Habitat in Relocated Streams
FLOW IN NATURAL STREAMS
Rivers and streams are nature's channels for the disposal of surface runoff. Stream flows vary
continuously from day to day, month to month, and year to year, and the variations between the
greatest floods and the lowest flows can be very large. A... | <urn:uuid:387694f3-83d6-48cf-a1f4-98d77fe7644f> | 4.21875 | 2,423 | Knowledge Article | Science & Tech. | 52.026867 | 3,448 |
Proving That (-1) * (-1) = 1
Date: 01/30/2006 at 10:59:35 From: Ken Subject: proof of why -1 x -1 = 1 At the high school level it is difficult to prove that -1 x -1 = 1. Is there a published proof somewhere? Thank you.
Date: 01/30/2006 at 11:14:11 From: Doctor Jerry Subject: Re: proof of why -1 x -1 = 1 Hello Ken, Than... | <urn:uuid:d9b32a59-1717-4554-9cf4-f43ee46daf05> | 3.375 | 309 | Comment Section | Science & Tech. | 98.54364 | 3,449 |
A circle has a unit circle (radius, r = 1) removed from its centre to produce an annulus.
If the area remaining is the same as the unit circle removed, find the width of the annulus.
Let the radius of the original circle be, r.
If the area remaining is equal to the area removed (a unit circle), the area of the original... | <urn:uuid:75e88997-89b1-4f9c-af0e-c65bb577bcf3> | 4.1875 | 124 | Tutorial | Science & Tech. | 69.889058 | 3,450 |
Stylonychia Video No. 2
This genus belongs to the ciliate order Hypotrichida whose species are characterized by rows of fused cilia called cirri on the ventral surface. Stylonychia uses its cirri to "walk" across a surface as well as for swimming. It is a common inhabitant of ponds, living in shoreline films where it p... | <urn:uuid:abdddb75-ddb3-492f-ba0d-d2a21d8754cd> | 2.515625 | 170 | Knowledge Article | Science & Tech. | 50.851494 | 3,451 |
MySQL INNER JOIN Tutorial & Examples
This tutorial shows you how to write ANSI-Style inner joins with the INNER JOIN keywords. Included are a general description, some syntax examples and a comparison between inner and cross joins.
Note: In MySQL the join keywords JOIN and CROSS JOIN are synonymous with INNER JOIN. Tha... | <urn:uuid:264c1a81-1248-4f34-ab7f-40943c9ddbe6> | 3.375 | 767 | Tutorial | Software Dev. | 50.633619 | 3,452 |
Some data referring to the number of survey fields, and the number of galaxies examined, are summarized in Table 2. In the survey areas there are altogether 1273 galaxies with diameters larger than the above limits, and in the comparison areas 2084. The entire material thus comprises 3357 galaxies distributed over 518 ... | <urn:uuid:5be430e4-37ac-4778-aae3-7e894c9a23b4> | 3.03125 | 1,351 | Academic Writing | Science & Tech. | 49.93416 | 3,453 |
Leading independent ice scientists from the University of Cambridge joined the Greenpeace ice breaker Arctic Sunrise on an expedition to test Arctic
sea ice thickness, in a year that could mark the lowest sea ice minimum on record. Temperature rise in the Arctic is among the fastest on Earth due to emissions of carbon ... | <urn:uuid:dc90513c-b1e4-4769-b3fd-dc61a3965e89> | 3.734375 | 289 | News (Org.) | Science & Tech. | 37.413574 | 3,454 |
Today, oxygen takes up a hefty portion of Earth's atmosphere: Life-sustaining O2 molecules make up 21 percent of the air we breathe. However, very early in Earth's history, O2 was a rare if not completely absent player in the turbulent mix of primordial gases. It wasn't until the "Great Oxidation Event" (GOE), nearly 2... | <urn:uuid:d29bf7cc-aa79-44f4-9e8c-f487340136c8> | 4.1875 | 1,139 | News Article | Science & Tech. | 32.548093 | 3,455 |
White fir, ponderosa pine, Jeffrey pine. Sugar pine, incense cedar, red fir: These are conifers of the headwater ecosystems of California's Sierra Nevada.
If trees could talk, what tales they might tell of the health of the forests, of the winter snows that fall on their branches and of how much water they transpire to... | <urn:uuid:e6856c57-c8de-47bc-b343-a7ec7e012d6b> | 3.640625 | 1,436 | News Article | Science & Tech. | 36.375891 | 3,456 |
Any real number may be interpreted as the radian measure of an angle as follows: If , think of wrapping a length of string around the standard unit circle C in the plane, with initial point P(1,0), and proceeding counterclockwise around the circle; do the same if , but wrap the string clockwise around the circle. This ... | <urn:uuid:e8a3003b-d39a-4f49-a77a-147b57ca66e8> | 4.125 | 544 | Tutorial | Science & Tech. | 56.207101 | 3,457 |
Apr 27, 2005
A little known fact: Popular ideas about the Sun have not fared well under the tests of a scientific theory. The formulators of the standard Sun model worked with gravity, gas laws, and nuclear fusion. But closer observation of the Sun has shown that electrical and magnetic properties dominate solar behavi... | <urn:uuid:9e5e6f80-1bb6-49c4-9ef1-22edcf01aeed> | 3.9375 | 2,081 | Personal Blog | Science & Tech. | 33.054237 | 3,458 |
Dust Plume Across Northern Patagonia
A checkerboard of growing (dull green) and fallow (tan) fields in northern Patagonia appears beneath a rippling plume of beige dust in this natural-color image from the Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite on September 11, 2009. The image sh... | <urn:uuid:a3ddeb0c-8d80-4e9c-95f9-00797003ee99> | 3.578125 | 175 | Truncated | Science & Tech. | 34.515641 | 3,459 |
|Ada 95 Quality and Style Guide||Chapter 8|
Reusability is the extent to which code can be used in different applications with minimal change. As code is reused in a new application, that new application partially inherits the attributes of that code. If the code is maintainable, the application is more maintainable. I... | <urn:uuid:01be6163-c34f-4449-93f5-521cf85e57a8> | 3.109375 | 1,095 | Documentation | Software Dev. | 33.650628 | 3,460 |
New Find At Ghost Ranch. New Mexico, Shows Dinosaurs Coexisted With Their Predecessors For 15 To 20 Million Years
A new species of dinosauromorph (lower left) was among the mixed assemblage of dinosaurs and dinosauromorphs found at Hayden Quarry in Ghost Ranch, N.M.
CREDIT: Donna Braginetz
For decades, paleontologists ... | <urn:uuid:6b595505-bfd9-4460-be52-19c394b7b5e6> | 3.609375 | 617 | News (Org.) | Science & Tech. | 21.207759 | 3,461 |
Traveling space particles reveal secrets of comets
Donna Jones Pelkie
Argonne National Laboratory
March 10, 2006
ARGONNE, Ill. - They came from outer space.
And now, particles of comet dust that traveled from the far reaches of
the solar system to Earth are traveling the United States, including a
stop at the Advanced ... | <urn:uuid:70d10e04-07ed-4a9f-a9da-af89e3d75012> | 3.671875 | 1,262 | News Article | Science & Tech. | 42.379578 | 3,462 |
A type is LessThanComparable if it is ordered: it must be possible to compare two objects of that type using operator<, and operator< must be a strict weak ordering relation.
|X||A type that is a model of LessThanComparable|
|x, y, z||Object of type X|
Consider the relation !(x < y) && !(y < x). If this relation is tra... | <urn:uuid:93313dda-4798-4a7b-a177-11374c2a4fec> | 3.265625 | 453 | Documentation | Software Dev. | 51.144109 | 3,463 |
Regular expressions are a well recognized way for describing string patterns. The following regular expression defines a floating point number with a (possibly empty) integer part, a non empty fractional part and an optional exponent:
[0-9]* \.[0-9]+ ([Ee](\+|-)?[0-9]+)?
The rules for interpreting and constructing such... | <urn:uuid:036e46cf-3866-407c-9a12-00e69319ebae> | 3.390625 | 1,935 | Documentation | Software Dev. | 51.360653 | 3,464 |
Four huge volcanic eruptions are to blame for the 'Little Ice Age' that cooled Earth up until the late 19th century
- Scientists analysed sediment and vegetation to confirm start of 'Little Ice Age'
- First time anyone has marked start of period of cooling
Four huge volcanic eruptions triggered a 'Little Ice Age' that ... | <urn:uuid:3428846a-ce5c-4f18-b8d7-fafbe230eaa4> | 3.6875 | 1,077 | Truncated | Science & Tech. | 35.321384 | 3,465 |
Helium-3 (3He) is a necessary component of many nuclear detection devices; however our country is facing a Helium-3 shortage. To address this shortage, DHS’ Domestic Nuclear Detection Office (DNDO) is advancing the search for efficient, cost-effective alternative technologies.
After weeks of rigorous testing, DNDO comp... | <urn:uuid:30960305-e4ca-4532-b619-47e50b29494c> | 2.59375 | 271 | News (Org.) | Science & Tech. | 2.108 | 3,466 |
Editor's Note: This article was originally presented at ESC Boston 2011.
No software engineering process can guarantee secure code, but following the right coding guidelines can dramatically increase the security and reliability of your code. Many embedded systems live in a world where a security breach can be catastro... | <urn:uuid:4e890a66-39a7-46bf-848e-0d45600bf949> | 3.546875 | 668 | Truncated | Software Dev. | 48.938182 | 3,467 |
Scientists have discovered the secret of how an amazing sea snail injects its venom after shooting a harpoon-like tooth into its prey — or some unlucky swimmer — at jetliner speeds. The creatures, called cone snails, use a highly specialized structure that instantly pumps the paralyzing venom through the tooth and into... | <urn:uuid:62cf0e3f-26a5-496e-8d7e-0f451cb29c42> | 3.984375 | 451 | News (Org.) | Science & Tech. | 43.856955 | 3,468 |
A new journal article suggests that blog comments and Google autocomplete are changing the way the public consumes scientific news. Dominique Brossard and Dietram A. Scheufele of the University of Wisconsin-Madison wrote in Science (paywall) about recent studies that suggest Google's autocomplete feature steers the gen... | <urn:uuid:687b620c-3a2b-4b55-accf-b076dadf9a47> | 2.796875 | 221 | News Article | Science & Tech. | 22.641243 | 3,469 |
A global perspective on dissolved organic matter and the world’s smallest organisms
A global perspective on dissolved organic matter and the world’s smallest organisms
Stiig Markager, Morten Søndergaard, Mathias Middelboe and Colin Stedmon
Background: Approximately 97% of all organic carbon in the world’s oceans exists... | <urn:uuid:e512cf16-0c35-4ed1-bc5f-1b742156ec81> | 3.015625 | 4,123 | Academic Writing | Science & Tech. | 43.750499 | 3,470 |
Washington, Sept 8: Scientists have developed highly efficient electrolyte system for solar cells that can convert sunlight into electricity and retain it for longer period.
Scientists from the University of Picardie Jules Verne and the Swiss Federal Institute of Technology revealed that the research was aimed at devel... | <urn:uuid:c5ce6c45-59e1-45bf-81df-4e61e80bb487> | 3.5 | 150 | News Article | Science & Tech. | 14.763793 | 3,471 |
MEDIA RELATIONS OFFICE
JET PROPULSION LABORATORY
CALIFORNIA INSTITUTE OF TECHNOLOGY
NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
PASADENA, CALIF. 91109 TELEPHONE (818) 354-5011
Contact: Martha Heil (818) 354-0850
FOR IMMEDIATE RELEASEOctober 26, 2000
JUPITER'S VOLCANIC MOON IO: STRANGE SHAPES IN A SIZZLING WORLD
The v... | <urn:uuid:84be9018-a4ad-4f6d-b0e8-7d4e8655050c> | 3.4375 | 1,519 | News (Org.) | Science & Tech. | 48.165611 | 3,472 |
For more than twenty years, the Homestake Solar Neutrino Experiment in the Homestake Gold Mine in South Dakota has been attempting to measure neutrino fluxes from space; in particular, this experiment has been gathering information on solar neutrino fluxes. The results of this experiment have been checked against predi... | <urn:uuid:93f82ccd-7846-46a4-ad89-f06139df4f4c> | 3.75 | 970 | Knowledge Article | Science & Tech. | 31.30125 | 3,473 |
Joined: 16 Mar 2004
|Posted: Tue Apr 14, 2009 1:33 pm Post subject: Carbon nanotubes not toxic for mice
|A new pilot study has found that single-walled carbon nanotubes are not toxic to mice, even after a period of four months. The result means that SWNTs might not be toxic to humans either and could one day be used fo... | <urn:uuid:dafdcfb2-f54e-45bb-8ff7-ea83e91453cc> | 2.859375 | 476 | Comment Section | Science & Tech. | 44.762701 | 3,474 |
This image shows a rimless, irregular depression that appears brighter than the surrounding material. Such features are thought to be volcanic vents . The shadowed, curved feature leading into the vent is a fault scarp, also called rupes . This image was taken using the Narrow Angle Camera (NAC).
Date acquired: April 0... | <urn:uuid:4c5a1666-e4d0-4091-a13c-214f1cc8c484> | 3.40625 | 89 | Knowledge Article | Science & Tech. | 26.347404 | 3,475 |
The Conservancy's conservation work spans from mauka (mountain) to makai (sea). Our vision is to protect the largest remaining native forest and nearshore marine ecosystems in the main Hawaiian Islands and Palmyra Atoll.
To achieve this vision, the Conservancy's efforts are focused on four major conservation initiative... | <urn:uuid:db058290-fcc0-49fa-b8ea-8b8d286ef706> | 3.546875 | 518 | About (Org.) | Science & Tech. | 33.869671 | 3,476 |
A NASA spacecraft has found an unusual three-planet system that consists of one super-Earth and two Neptune-size worlds orbiting a star similar to our sun, a new study reveals.
The planet-hunting Kepler Space Telescope discovered the three planets around the star Kepler-18, which is only 10 percent larger than the sun ... | <urn:uuid:71cd427c-b088-406c-87a4-723133ec1b5c> | 3.453125 | 1,209 | News Article | Science & Tech. | 52.70324 | 3,477 |
Look up monthly U.S., Statewide, Divisional, and Regional Temperature, Precipitation, Degree Days, and Palmer (Drought) rankings for 1-12, 18, 24, 36, 48, 60-month, and Year-to-Date time periods. Data and statistics are as of January 1895.
Please note, Degree Days are not available for Agricultural Belts
Colorado Tempe... | <urn:uuid:70f6585e-0f26-4183-b923-f5f891ae0c4d> | 2.65625 | 139 | Structured Data | Science & Tech. | 51.857104 | 3,478 |
The National Institute for Climatic Change Research (NICCR, pronounced "nicer") is sponsored by the U.S. Department of Energy's (DOE's) Office of Biological and Environmental Research (BER), which is part of the DOE's Office of Science. The goal of NICCR is to mobilize university researchers, from all regions of the co... | <urn:uuid:dc7e92c4-dcc3-421b-a1ca-0a171f301482> | 2.84375 | 486 | About (Org.) | Science & Tech. | 12.80907 | 3,479 |
(1) An abstract class may contain complete or incomplete methods. Interfaces can contain only the signature of a method but no body. Thus an abstract class can implement methods but an interface cannot implement methods.
(2) An abstract class can contain fields, constructors, or destructors and implement properties. An... | <urn:uuid:1a172ac3-b411-4e7b-86df-d530346ccb18> | 3.34375 | 197 | Q&A Forum | Software Dev. | 38.82897 | 3,480 |
The Secret Minds of Bees
Life hasn’t been kind to honeybees lately. Nearly five years ago, beekeepers began to report that their charges were evacuating hives and dying en masse. (OnEarth first reported on this phenomenon in "The Vanishing" from our Summer 2006 issue.) Colony Collapse Disorder, the name scientists gave... | <urn:uuid:20bc47b7-84fd-4171-a2d7-fc2caf23b2b2> | 3.09375 | 771 | News Article | Science & Tech. | 51.307587 | 3,481 |
equilibrium and gravity on a uniform beam
View Single Post
Apr6-09, 06:24 PM
Hi alexandertg6! Welcome to PF!
a uniform beam of length 12.0 m is supported by a horizontal cable and a hinge at angle θ = 70° with the vertical. The tension in the cable is 500 N. Find the gravitational force on the beam in unit vector notat... | <urn:uuid:fcfca59c-09be-406e-b2b7-992634d9f579> | 2.65625 | 158 | Comment Section | Science & Tech. | 82.211568 | 3,482 |
Physical Sciences Division
Researchers Map Water's Transformation from Ice to Liquid
Team determines if models match experimental reality
Results: Two popular computer models used by chemists and physicists to describe water do not correctly predict that ice melts at 32 degrees Fahrenheit, according to a study by scien... | <urn:uuid:c9b4eaae-72e6-4ba8-8eec-827fb0f93faa> | 3.671875 | 711 | News (Org.) | Science & Tech. | 41.429278 | 3,483 |
PPPL-designed coils arrive in Germany for fusion experiment
Posted August 27, 2012; 02:42 p.m.
Engineers at the U.S. Department of Energy's Princeton Plasma Physics Laboratory (PPPL) have designed and delivered to Germany two critical components for a major device to develop fusion power.
The "trim coil" components, ea... | <urn:uuid:3d0c89e8-1fe2-4e1a-9208-7529810674fb> | 2.5625 | 1,062 | News (Org.) | Science & Tech. | 49.909658 | 3,484 |
Like people who approach geopolitics with the attitude of "If people would just talk to each other, we would all along", there are a lot of naïve assumptions about just dumping gasoline.
We know it causes emissions, and emissions are bad, we know a lot of the money paid for oil goes to fund Middle Eastern terrorism, an... | <urn:uuid:fa054ec6-08f8-46e8-a77f-1b36851b3205> | 3.109375 | 1,097 | Personal Blog | Science & Tech. | 31.641054 | 3,485 |
Astronomers in the control room of the CSIRO Parkes radio telescope
Astronomers from around the world come to Parkes Observatory to use the telescope to observe naturally produced radio energy from space. They control the telescope from a desktop computer and monitor the operation of the telescope and some initial resu... | <urn:uuid:d7048ac4-a2fa-4b1b-a6f4-380b9ab179b3> | 2.65625 | 81 | Truncated | Science & Tech. | 13.384216 | 3,486 |
Blasts of radiation brighter than a trillion suns. Charged particles with the energy of a well-thrown baseball. Jets of magnetized plasma streaming across intergalactic space. What do these have in common? Their energy is derived from black holes.
Today, at the 2009 Fermi Symposium in Washington, DC, Charles Dermer, an... | <urn:uuid:dd34915f-d76b-4095-a701-d9b1aa6d4223> | 4.03125 | 1,106 | Knowledge Article | Science & Tech. | 22.191258 | 3,487 |
It’s been a good month for synthetic biology. A few weeks ago, in a great talk(on the concept of “singularities”) given to METal International in Los Angeles, biophysicist Reese Jones showed footage of the world’s first DNA laser printer at work.
You heard me right—a DNA laser printer. Created by the San Francisco-base... | <urn:uuid:7944b14a-8e15-43a2-9aa5-d2d180ebb643> | 3.1875 | 727 | Nonfiction Writing | Science & Tech. | 44.960721 | 3,488 |
UML 2 in a Nutshell: Use Case Diagrams
Source: O'Reilly Media
Use cases are a way to capture system functionality and requirements in UML. Use case diagrams consist of named pieces of functionality (use cases), the persons or things invoking the functionality (actors), and possibly the elements responsible for implemen... | <urn:uuid:284610c1-f89b-4007-acc8-069ea70140b4> | 3.84375 | 129 | Knowledge Article | Software Dev. | 30.199588 | 3,489 |
Who can we blame for all this?
Molecular manufacturing enthusiasts trace the idea to 1959 and Nobel laureate Richard Feynmann's famous lecture "There's Room at the Bottom". In it, he suggested that it ought to be possible to rearrange atoms "the way we want…all the way down." Far enough down, he said, "all of our devic... | <urn:uuid:331c9d32-0753-40be-b4a0-c5ba883e059d> | 2.859375 | 1,116 | Comment Section | Science & Tech. | 48.991244 | 3,490 |
Want to stay on top of all the space news? Follow @universetoday on Twitter
Of all the wavelengths in the electromagnetic spectrum, those that lie between 400 nm to 700 nm are the ones most familiar to us. That’s because these are the waves that comprise what we call visible light.
When we see objects, it’s because the... | <urn:uuid:bd4d78cd-acd9-4a86-8d0b-4755a2f4460a> | 3.921875 | 595 | Knowledge Article | Science & Tech. | 39.741332 | 3,491 |
Each of the two atomic bomb blasts were thought to have been approximately equivalent to a blast produced from 20,000 tons of TNT (The Manhattan Engineer District, 1946).
Figures 4 and 5 are photos depicting the “mushroom clouds” that formed as the bombs were dropped on Hiroshima and Nagasaki respectively.
(To see reco... | <urn:uuid:f5b40e65-ec1d-49f5-af88-3dbe06b58cce> | 3.75 | 382 | Knowledge Article | Science & Tech. | 41.846375 | 3,492 |
A news species of
bacteria that forms itself into living electrical cables
spanning several centimetres has been discovered in Danish mud.
The bacteria, a previously unknown member of the
Desulfobulbaceae family, were found living in at the
bottom of the bay of the Danish port, Aarhus, by Lars Peter
Nielsen, a bioscien... | <urn:uuid:b4f94fcb-1414-4f4a-b104-ffacebf999f1> | 3.375 | 472 | News Article | Science & Tech. | 37.042093 | 3,493 |
MORGANTOWN, W.Va. -- A program run by the National Science Foundation will deploy as many as 14 seismic monitoring devices in West Virginia this summer.
The EarthScope program will then gather data for two years.
Geologist Ron McDowell of the West Virginia Geologic and Economic Survey says it's part of a larger project... | <urn:uuid:8b4150e7-3af7-4247-b568-2417b31ae5d3> | 2.515625 | 167 | News Article | Science & Tech. | 36.029522 | 3,494 |
SUMMARY PARAGRAPH for YCLWomega2
About yeast retrotransposons...
Ty elements (transposon-yeast) are DNA sequences that move from one chromosomal site to another via an RNA intermediate (3). The DNA segment is transcribed into RNA, then reverse-transcribed into cDNA which is reinserted into the nuclear genome, usually a... | <urn:uuid:b1cb98ef-3363-445b-98fc-0cccb9414bda> | 3.28125 | 1,091 | Academic Writing | Science & Tech. | 34.009054 | 3,495 |
How a leaf beetle walks underwater
Posted by Xeno on August 11, 2012
Insects are experts when it comes to adhesion on dry surfaces. However, in nature, plants may be covered by water for quite a long period of time, especially after rain. The bionic expert Professor Stanislav Gorb of Kiel University, Germany, and the m... | <urn:uuid:036e4b14-f951-44e8-a3bf-20a5041612f9> | 3.90625 | 462 | Personal Blog | Science & Tech. | 34.422609 | 3,496 |
January 25, 2013 | 34
Glassfrogs, or centrolenids, are wide-skulled, long-limbed arboreal little frogs (SVL 20-60 mm), unique to the Central and South American cloud and rain forests. Not until 1951 did this group get recognised as a distinct and nameable entity: prior to this, species within the group (known to scienc... | <urn:uuid:94fbd428-3ab7-49ff-9fcb-a2a4ed565f97> | 3.671875 | 3,101 | Personal Blog | Science & Tech. | 45.229132 | 3,497 |
Global names are used to denote value variables, value constructors (constant or non-constant), type constructors, and record labels. Internally, a global name consists of two parts: the name of the defining module (the module name), and the name of the global inside that module (the local name). The two parts of the n... | <urn:uuid:d2578867-56a5-4d08-b8d6-b6c44ca0c7a5> | 3.78125 | 646 | Documentation | Software Dev. | 27.833896 | 3,498 |
XPath and XPointer/XPointer Background
This chapter introduces the concepts and language of the XPointer 1.0 family of specifications. XPointer 1.0 Candidate Recommendation was a single document in September 2001 but was fragmented into a group of smaller specifications in July 2002. Most of these specifications were p... | <urn:uuid:1732db24-978f-4bc6-a42f-a46febd81562> | 2.640625 | 6,294 | Documentation | Software Dev. | 44.986812 | 3,499 |