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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As we check our coding page in .net application we found that at the top after the namespaces there is a call that is partially defined in every web page. The question arrives in our mind that what is this Partial and why we use the class with partial access specifier. Why we not use the class as publicly or privately?... | <urn:uuid:65ffd00f-bfa8-4e85-ba0a-061109f0599f> | 3.40625 | 491 | Content Listing | Software Dev. | 46.28012 |
The Pasterze Glacier in western Austria has been receding since 1856. A combination of higher summer temperatures and lower winter snowfall is causing the retreat. Glaciers in nearby Switzerland receded more rapidly in 2003 than in any other year since annual measurements began in 1880. Despite the record heat in Europ... | <urn:uuid:3bd74f56-0527-4a18-8035-023e5cfe289a> | 4.40625 | 180 | Knowledge Article | Science & Tech. | 32.29 |
General Chemistry/Periodicity and Electron Configurations
Blocks of the Periodic Table
The Periodic Table does more than just list the elements. The word periodic means that in each row, or period, there is a pattern of characteristics in the elements. This is because the elements are listed in part by their electron ... | <urn:uuid:7ab562e2-c61b-4988-9c51-24c5b3cb1d20> | 4.4375 | 1,666 | Knowledge Article | Science & Tech. | 39.408244 |
Most Atlantic hurricanes start to take shape when thunderstorms along the west coast of Africa drift out over warm ocean waters that are at least 80 degrees Fahrenheit (27 degrees Celsius), where they encounter converging winds from around the equator.
Warm Air, Warm Water Make Conditions Right for Hurricanes
Hurricane... | <urn:uuid:2529c9ff-fac1-4c7a-81c9-51e424e73008> | 4.21875 | 647 | Knowledge Article | Science & Tech. | 31.318844 |
What does it mean? and What is it for?
It is used to map a canonical name for a servlet (not an actual Servlet class that you've written) to a JSP (which happens to be a servlet). On its own it isn't quite useful. You'll often need to map the servlet to a url-pattern as:
All requests now arriving at
/test/* will now be... | <urn:uuid:d74cec90-49ba-4472-9fd3-5508360e9b05> | 2.796875 | 271 | Q&A Forum | Software Dev. | 67.660625 |
Good Answer by Fishtoaster.
The science is ancient, discovered by Archimedes.
1: Any object, wholly or partially immersed in a fluid, is buoyed up by a force equal to the weight of the fluid displaced by the object.
In other words, if you put a ball, with volume 1 litre completely under water, there is an upwards force... | <urn:uuid:710105c9-fdc7-4e38-9ce1-cfb2eb9ec746> | 3.65625 | 266 | Q&A Forum | Science & Tech. | 67.277035 |
Robots game activity
Bring the stack of CRC index cards you developed in lab yesterday to
lecture, one for each class you hope to design in your
robots program. This activity will involve elaboration
of these cards, giving greater specificity to responsibilities and
describing each class's attributes.
Your task in clas... | <urn:uuid:4fe2fa59-6eeb-4077-99a2-3e6678c046da> | 3.4375 | 295 | Tutorial | Software Dev. | 49.502065 |
In addition to the above types of problems, considerable research is directed to basic questions such as, Do we understand how quasars form and evolve? Can we connect theories of galaxy and black hole formation with the observations of quasars at high redshift and the incidence of black holes in galaxies at low redshif... | <urn:uuid:3b1a9e85-b862-4186-8471-8747530a00ce> | 3.046875 | 435 | Academic Writing | Science & Tech. | 34.975905 |
Major Section: DOCUMENTATION
ACL2 documentation strings make special use of the tilde character (~). In particular, we describe here a ``markup language'' for which the tilde character plays a special role. The markup language is valuable if you want to write documentation that is to be displayed outside your ACL2 sess... | <urn:uuid:8e49dca7-353b-497d-b5e0-bae637794215> | 3.390625 | 2,246 | Documentation | Software Dev. | 52.52327 |
“Understanding which species are most vulnerable to human impacts is a prerequisite for designing effective conservation strategies. Surveys of terrestrial species have suggested that large-bodied species and top predators are the most at risk, and it is commonly assumed that such patterns also apply in the ocean. Howe... | <urn:uuid:7ef17589-6334-4f7f-8707-b2e85202e9c1> | 3.59375 | 235 | Truncated | Science & Tech. | 23.591912 |
Java vs. C
Is Java easier or harder than C?.
Java Virtual Machine
The key to Java's portability and security is the Java Virtual Machine..
History of Java
Java was designed by Sun Microsystems in the early 1990s to solve the problem of connecting many household machines together. This project failed because no one want... | <urn:uuid:fbe2a20f-b715-4f1b-9655-5b4acc5d4d06> | 2.75 | 131 | Content Listing | Software Dev. | 49.995503 |
SOHO is part of the first Cornerstone project in ESA's science programme, in which the other part is the Cluster mission. Both are joint ESA/NASA projects in which ESA is the senior partner. SOHO and Cluster are also contributions to the International Solar-Terrestrial Physics Programme, to which ESA, NASA and the spac... | <urn:uuid:7e3e2279-e48f-4fbc-aec0-bb81b03f34c5> | 2.84375 | 251 | Knowledge Article | Science & Tech. | 30.455643 |
This is a tricky question to answer because weather, what you experience at your house right now, is not really that same thing as climate, the patterns of global air and sea movements that bring weather.
So milder winters can be a possibility in certain locations, as they will be exposed to an overall warming of the e... | <urn:uuid:46831906-816c-4216-bb15-f2eeb6252799> | 2.953125 | 383 | Q&A Forum | Science & Tech. | 43.250079 |
Science Fair Project Encyclopedia
In differential geometry, a pseudo-Riemannian manifold is a smooth manifold equipped with a smooth, symmetric, (0,2) tensor which is nondegenerate at each point on the manifold. This tensor is called a pseudo-Riemannian metric or, simply, a (pseudo-)metric tensor.
The key difference be... | <urn:uuid:b9e1a8f8-67e4-46d6-add8-080dedfd2f12> | 3.625 | 644 | Knowledge Article | Science & Tech. | 25.882828 |
Questions: G to A and C to T substitutions, is this a rule ?
zxiong at arizvm1.ccit.arizona.edu
Mon Apr 11 11:59:05 EST 1994
Being not familiar with molecular evolution. I have been troubled with some of
my data in RNA virus sequence. We are working on a small RNA virus and nearly
complete the sequence of the viral RNA... | <urn:uuid:46fef4e6-8218-47b0-a114-75e38b50bf1a> | 2.875 | 327 | Q&A Forum | Science & Tech. | 59.739091 |
Paul Painter¹ and Lucas McConnell²
¹Materials Science and Engineering and The Energy Institute
²Renewergy Corporation, Erie PA.
Presently, biofuels in this country usually means one of two things, ethanol (in the U.S. principally produced from corn) or biodiesel (largely from oilseeds or yellow grease). However, large-... | <urn:uuid:5808c6cc-13e7-4e25-8330-97fe63475956> | 3.625 | 446 | Academic Writing | Science & Tech. | 21.524274 |
Roy J. Plunkett
Roy J. Plunkett with a cable insulated with Teflon and a Teflon-coated muffin tin. Gift of Roy Plunkett. Courtesy Hagley Museum and Library.
From the 1930s to the present, beginning with neoprene and nylon, the American chemical industry has introduced a cornucopia of polymers to the consumer. Teflon, d... | <urn:uuid:0b8f571c-a249-4c01-9b3a-6ebe34815c6d> | 3.3125 | 683 | Knowledge Article | Science & Tech. | 37.662211 |
Now that you're comfortable using the MySQL client tools to manipulate data in the database, you can begin using PHP to display and modify data from the database. PHP has standard functions for working with the database.
First, we're going to discuss PHPs built-in database functions. We'll also show you how to use the ... | <urn:uuid:c21bbd34-5b0b-4017-90f1-4b9d4a0ca4df> | 3.140625 | 343 | Tutorial | Software Dev. | 52.928786 |
Why Does Copper Turn Green?
Copper turns green because of chemical reactions with the elements.
For the same reason that iron rusts.
Just as iron that is left unprotected in open air will corrode and form a flaky orange-red outer layer, copper that is exposed to the elements undergoes a series of chemical reactions tha... | <urn:uuid:74fec3df-1ff7-4026-9308-fe6758e0d9e2> | 3.546875 | 169 | Knowledge Article | Science & Tech. | 51.391467 |
Published in Lunar and Planetary Science XXVII, pp. 1183-1184, LPI, Houston.
Introduction: Crustal processes and reactions during hydrothermal and biogenic activity result in extreme degrees of sulfur isotopic fractionation on Earth. For example, delta 34S in terrestrial sulfides ranges from -70 to +70 on Earth . In co... | <urn:uuid:bccae671-f765-40b4-9299-ad77496383ea> | 3.390625 | 2,578 | Academic Writing | Science & Tech. | 44.855372 |
Functions in Lisp
|Column Tag:||Lisp Listener
"Functions in Lisp"
By Andy Cohen, Human Factors Engineering, Hughes Aircraft, MacTutor Contributing Editor
As you may recall from the first installment of the Lisp Listener, a procedure is a description of an action or computation. A primitive is a predefined or "builtin" ... | <urn:uuid:9ed9dd59-1ad8-422d-be1a-e1d062d262b6> | 3.53125 | 2,807 | Documentation | Software Dev. | 54.579133 |
A tree-killing invasive insect, the hemlock woolly adelgid (HWA), was found for the first time in Indiana on a landscape tree in LaPorte County in mid-April.
Since its introduction to the Eastern United States in the mid-1920s, the HWA has infested about half the native range of Eastern hemlock. In certain areas of the... | <urn:uuid:41c9855e-64d1-4ba6-9dee-73b103d70bef> | 3.171875 | 947 | Knowledge Article | Science & Tech. | 40.973803 |
Photonics: Sensing on the way
Published online 01 August 2012
Hollow optical fibers containing light-emitting liquids hold big promises for biological sensing applications
Schematic illustration of a hollow fiber. The chemiluminescent liquid in the core (yellow) is guided through the fiber, also with help of further ho... | <urn:uuid:512b4ec2-ba1a-4c6f-8ec8-d09831c1eed6> | 3.125 | 637 | Academic Writing | Science & Tech. | 32.100344 |
By John Fleck
Web edition: February 12, 2010 Print edition: February 27, 2010; Vol.177 #5 (p. 30)
Buy this book
Young adults can learn how scientists use tree rings to document climate change.University of New Mexico Press, 2009, 91 p., $21.95.
Please alert Science News to any inappropriate posts by clicking the REPORT... | <urn:uuid:d86faf02-af22-4034-9716-90c2739df0e6> | 3.125 | 136 | Truncated | Science & Tech. | 80.627273 |
Hot Sites and Cool Books
Recommended Web sites:
Information about the 2006 dinosaur dig at the 5E Ranch can be found at www.montanadinosaurdigs.com/sauro.htm (Judith River Dinosaur Institute).
Perkins, Sid. 2006. Bone hunt. Science News 170(Aug. 26):138-140. Available at http://www.sciencenews.org/articles/20060826/bob... | <urn:uuid:2adbea19-6442-400d-895e-a52d103f9c60> | 2.953125 | 780 | Content Listing | Science & Tech. | 50.30494 |
In A.D. 79 Mount Vesuvius erupted, annihilating the cities of Pompeii and Herculaneum and killing thousands who did not evacuate in time. To avert a similar fate for present-day Naples, which lies six miles west of the still active Vesuvius, as well as for the cities near volatile Mount Etna in Sicily, a novel laser sy... | <urn:uuid:9309d171-e9f0-44a8-9de3-926e353cd4e3> | 3.90625 | 748 | Truncated | Science & Tech. | 40.471455 |
An instrument to measure the altitude of an object above a fixed level.Generally, mean sea level is used for the reference level.
Mid-level cloud (bases generally 2000 - 8000m), made up of grey,puffy masses, sometimes appearing in parallel waves or bands. An indicatorof mid-level instability. Altocumulus can take on va... | <urn:uuid:1f2052ca-130e-43ae-ae93-421e6e25982d> | 3.15625 | 366 | Structured Data | Science & Tech. | 24.921433 |
Home › SparkNotes › Chemistry Study Guides › Review of Gases › Gases Review Test
don't seem to have. Please try a different browser.
Scroll through the page to review your answers. The correct answer is
Your incorrect answers (if any) are highlighted in
If you'd like to take the test over again, click the reset button ... | <urn:uuid:1475843b-afe3-4a21-b409-9b1d07231153> | 3.34375 | 1,320 | Content Listing | Science & Tech. | 65.666305 |
All procedures in the Verilog HDL are specified within one of the following four statements:
-- initial construct
-- always construct
The initial and always constructs are enabled at the beginning of a simulation. The initial construct shall execute only once and its activity shall cease when the statement has finished... | <urn:uuid:2dc62b9f-398e-47e8-9d87-d0375daf0011> | 3 | 806 | Documentation | Software Dev. | 42.033475 |
Wildlife you see in a national park or other reserved area don't know about the park boundary. Bobcat, martens, mink, and moose need different types of living space and habitat. Development outside the park affects their ability to inhabit the park.
Brief review of bat research in the San Francisco Bay area and souther... | <urn:uuid:4448345c-0895-4322-b597-44994e0b8dfa> | 3.3125 | 182 | Content Listing | Science & Tech. | 24.002095 |
The Lake Tahoe area on the California-Nevada border can be appreciated from a variety of perspectives: Some people focus on the stunningly beautiful alpine lake nestled in the Sierra Nevada range, while others see it as a mecca for skiers and winter sports enthusiasts. When climate scientists look around, though, they ... | <urn:uuid:c3b8b37a-b1f0-4749-b688-1d7e5bfb16b9> | 3.859375 | 592 | Personal Blog | Science & Tech. | 34.263168 |
Last Wednesday the National Academy of Sciences held a press conference in Washington, DC, to introduce its newly completed report on priorities for the coming decade in solar and space physics. Daniel Baker of the University of Colorado chaired the committee that wrote the report. Thomas Zurbuchen of the University of... | <urn:uuid:dfeab920-d146-490d-b528-0a5dc3071873> | 2.96875 | 2,306 | Personal Blog | Science & Tech. | 27.110422 |
Sunlight is Earth’s most abundant energy source and is delivered everywhere free of charge. Yet direct use of solar energy—that is, harnessing light’s energy content immediately rather than indirectly in fossil fuels or wind power—makes only a small contribution to humanity’s energy supply. In 2008, about 0.1% of the t... | <urn:uuid:515d3239-de8f-40e7-adc5-50e951db0245> | 4.09375 | 508 | Knowledge Article | Science & Tech. | 28.740823 |
Why 2 high tides?
Name: paul dickerson
Date: 1993 - 1999
It makes sense to me why there is a high tide at or about noon during
new moon, but why is there a high tide at or about mid-night as well?
The reason is very simple, though it takes a bit of thinking to hit the
right direction. Consider the Earth-Moon system, an... | <urn:uuid:179fc92f-8cea-49c6-b6b4-23ed568b253e> | 2.6875 | 174 | Q&A Forum | Science & Tech. | 64.555083 |
When experiencing alpha decay, atoms shed alpha particles made of 2 protons and 2 neutrons. Why can't we have other types of particles made of more or less protons?
The reason why alpha particles heavily dominate as the proton-neutron mix most likely to be emitted from most (not all!) radioactive components is the extr... | <urn:uuid:2d293bb8-356c-42d9-9b1f-f5c7779b9986> | 3.390625 | 505 | Q&A Forum | Science & Tech. | 48.759948 |
|Mon March 24, 1969 02:32PM (PST)|
This report supersedes any earlier report of this event
This event has been reviewed by a seismologist
Mon March 24, 1969 02:32PM (PST)
Mon March 24, 1969 22:32 (GMT)
30.1 km ( 18.7 mi) ENE ( 67. azimuth) from Hanford-300, WA
31.7 km ( 19.7 mi) SSE ( 151. azimuth) from Othello, WA
33.... | <urn:uuid:04b85eb8-944d-4176-8e7a-b2e53c9f1916> | 2.890625 | 829 | Structured Data | Science & Tech. | 61.790159 |
Interpreter for Zoom Language
Zoom language is new language developed at DePaul University by Dr. Jia. ZOOM
stands for Z-based Object Oriented Modeling notation. It's made up of 3
different parts: zoom specification notations ZOOM-S, zoom design notation
ZOOM-D and zoom implementation language ZOOM-I. The syntax of ZOO... | <urn:uuid:6df337f0-b74a-4b93-a6ac-81d0729d798c> | 2.765625 | 433 | Personal Blog | Software Dev. | 46.991907 |
The scene: Scientist Jian Chen adjusts optics mounted for an experiment at one of several PULSE laser laboratories housed at SLAC. (PULSE is a joint SLAC/Stanford University laser science institute.)
In this experiment, a small fleck of sample material is held in a special “diamond anvil cell” and torqued to pressures ... | <urn:uuid:aa900d17-ee05-43a1-9828-f3db9c23769c> | 2.90625 | 301 | Personal Blog | Science & Tech. | 49.949323 |
The "Methane" experiment was proposed during the TransCom 2008 meeting in Utrecht. The first protocol was discussed during the post-ICDC8 TransCom meeting in Jena, followed by the final protocol in 2010. Since then 16 models or model variants have performed the simulations. Previous TransCom experiments focused on chem... | <urn:uuid:fafff650-2a32-4b22-b6ba-3ad9c568a763> | 2.796875 | 742 | Knowledge Article | Science & Tech. | 56.851609 |
Samarium: the essentials
Samarium has a bright silver lustre and is reasonably stable in air. It ignites in air at 150°C. It is a rare earth metal. It is found with other rare earth elements in minerals including monazite and bastnaesite and is used in electronics industries.
Samarium: historical information
Samarium w... | <urn:uuid:03679806-1247-4d30-82a5-5ab86e77b708> | 3.34375 | 560 | Knowledge Article | Science & Tech. | 23.493616 |
Oxygen Fuels the Fires of Time
Scientists from The Field Museum in Chicago and Royal Holloway University of London, publishing their results this week in the journal Nature Geoscience, have shown that the amount of charcoal preserved in ancient peat bogs, now coal, gives a measure of how much oxygen there was in the pa... | <urn:uuid:b82f6dde-52a7-4c70-a146-bfaf0d7d1e3b> | 4 | 598 | Knowledge Article | Science & Tech. | 28.329925 |
If he casts the right fly, an angler can catch some really big fish. Scientists are the same way, needing the right type of microscope to visualize nature's smallest molecules and atoms. Now, researchers are redesigning their light microscopes to catch a glimpse of some of the most miniscule molecules, those that make ... | <urn:uuid:321fbaa9-de0c-4c46-9752-a86ab7c290c2> | 3.53125 | 1,712 | Knowledge Article | Science & Tech. | 35.103599 |
Phytoplankton Under Ice
Beneath the Arctic ice—over 12 feet deep in some areas—lies a dark, cold and lifeless sea. Or so we thought.
“If someone had asked me before the expedition whether we would see under-ice blooms, I would have told them it was impossible,” says Arrigo. “This discovery was a complete surprise.”
The... | <urn:uuid:dda98bee-cbfe-4019-acc9-adace79b16b1> | 4.15625 | 565 | Knowledge Article | Science & Tech. | 47.431837 |
Per Square Meter
Warm-up: Relationships in Ecosystems (10 minutes)
1. Begin this lesson by presenting the powerpoint, “Per Square Meter”.
2. After the presentation, ask students to think of animal relationships that correspond to each of the following types; Competition, Predation, Parasitism, and Mutualism
a. For exam... | <urn:uuid:c76adb43-fdc6-442d-882e-b7781f7e7d83> | 3.921875 | 1,207 | Tutorial | Science & Tech. | 52.925334 |
No one knows how much warming is "safe". What we do know is that climate change is already harming people and ecosystems. Its reality can be seen in melting glaciers, disintegrating polar ice, thawing permafrost, changing monsoon patterns, rising sea levels, changing ecosystems and fatal heat waves.
Scientists are not ... | <urn:uuid:93f23c86-06b2-4c01-8d4e-f0341afe508c> | 3.75 | 324 | Knowledge Article | Science & Tech. | 31.269855 |
The principal purpose of this project is to demonstrate the feasibility of instrumenting heavily icecovered fjords to obtain real-time data of the upper ocean.
Greenland's ice-covered fjords are the connections between the Greenland Ice Sheet and the open ocean. These dynamic environments enable access of warm ocean wa... | <urn:uuid:7e5d03a3-1703-4c51-b973-7b9dbb1300f8> | 3.4375 | 852 | Academic Writing | Science & Tech. | 40.168238 |
Information found on this page has been archived and is for reference, research or recordkeeping purposes. Please visit NRC's new site for the most recent information.
Information identified as archived on the Web is for reference, research or recordkeeping purposes. It has not been altered or updated after the date of... | <urn:uuid:58cd456e-130d-479b-b5fd-0302bc9fa692> | 3.515625 | 219 | Knowledge Article | Science & Tech. | 35.468882 |
Clouds and cosmos
J'ai découvert par hazard les travaux de Henrik Svensmark sur le processus de formation des nuages.
Ces derniers remettaient en cause les thèses défendues par les tenants du réchauffement climatique du aux activités humaines. En effectuant quelques recherches sur Internet j'ai pu mesurer l'incroyable ... | <urn:uuid:57ca599a-245e-40c8-95d4-d743e3a8f855> | 2.78125 | 1,298 | Personal Blog | Science & Tech. | 43.698981 |
Deforestation monitoring needs better capacity and access to technologies
Most tropical developing countries are struggling to monitor and report their greenhouse gas emissions from forest loss, and will need international support to implement the UN REDD+ scheme, according to a study.
The Reducing Emissions from Defor... | <urn:uuid:a39a2d08-01a8-4cfd-a64b-30208373568d> | 3.15625 | 898 | Comment Section | Science & Tech. | 35.328865 |
7. A point is on the perpendicular bisector of a line segment if and only if it lies the same distance from the two endpoints.
There are two things that need to be proved here. The first is that if a point is on the perpendicular bisector of a line segment, then it is equidistant from the two endpoints of the segment.
... | <urn:uuid:f8b49205-6972-49a9-83ab-a66cb2a926a1> | 3.78125 | 445 | Academic Writing | Science & Tech. | 56.653818 |
Introduction to Integrals
The Definite Integral
The definite integral is a convenient notation used the represent the left-hand and right-hand approximations discussed in the previous section. f (x)dx means the area of the region bounded by f , the y -axis and the lines x = a and x = b. Writing f (x)dx is equivalent to... | <urn:uuid:f092ba97-0d03-497d-811a-07a6f4f4e39d> | 4.5 | 580 | Tutorial | Science & Tech. | 46.219777 |
From the time of Aristotle (384-322 BC) until the late 1500’s, gravity was believed to act differently on different objects.
- Drop a metal bar and a feather at the same time… which one hits the ground first?
- Obviously, common sense will tell you that the bar will hit first, while the feather slowly flutters to the g... | <urn:uuid:43ce7457-915e-4a8a-b78f-fca95b28656c> | 3.953125 | 1,359 | Tutorial | Science & Tech. | 81.255107 |
This weather balloon is full of helium gas. It is surrounded by Earth's atmosphere, which is mostly nitrogen and oxygen gasses. Helium is "lighter" (less dense) than nitrogen or oxygen, so the balloon will rise when the scientist lets go of it.
Click on image for full size
Image courtesy of the University Corporation f... | <urn:uuid:7bf1d597-0484-4471-8f33-5503ed8fe8ab> | 3.875 | 860 | Knowledge Article | Science & Tech. | 56.872293 |
Introduction to Enzymes
The following has been excerpted from a very popular Worthington publication which was originally published in 1972 as the Manual of Clinical Enzyme Measurements. While some of the presentation may seem somewhat dated, the basic concepts are still helpful for researchers who must use enzymes but... | <urn:uuid:b1f146ea-468c-4e1e-980b-c4c17efb5378> | 3.734375 | 235 | Knowledge Article | Science & Tech. | 36.452391 |
Introduction to Enzymes
The following has been excerpted from a very popular Worthington publication which was originally published in 1972 as the Manual of Clinical Enzyme Measurements. While some of the presentation may seem somewhat dated, the basic concepts are still helpful for researchers who must use enzymes but... | <urn:uuid:950e10c6-23a1-4ac4-896e-da30b265af84> | 3.828125 | 234 | Knowledge Article | Science & Tech. | 32.865254 |
Some scientists say it's an exciting "start". We take a boat to see the results. At the moment, we're whizzing down a channel about a few miles downstream from Caernarvon.
Denise Reed spends a lot of her life in these wetlands: she studies them for Louisiana State University. Reed would make a great scout leadershe's g... | <urn:uuid:75e536bc-b651-4d8e-87c9-5ed446966253> | 3.09375 | 477 | Audio Transcript | Science & Tech. | 71.227569 |
Ever see a monarch butterfly?
They have bright orange and black wings, and every year they fly from Canada to Mexico and then back again. Each individual butterfly doesn’t make the trip, but females lay eggs along the way and their offspring continue on.
What a trip!
Some people think monarch butterflies are in danger ... | <urn:uuid:1bdcc472-c55c-4506-a05a-5c28629a7118> | 3.765625 | 329 | Knowledge Article | Science & Tech. | 59.046274 |
figure tag is used to provide the
structure for inserting a figure into a CNXML document. A figure
may contain an image, multimedia object, or caption tag.
<title>The World's Cutest Dog</title>
<media id="dogpic" alt="A dog sitting on a bed">
<image mime-type="image/jpeg" src="image1.jpg" />
Notice how cute the dog is ... | <urn:uuid:8c5551fd-d2dc-4ef1-966a-c0bcfa8ee5d2> | 2.875 | 327 | Documentation | Software Dev. | 48.186005 |
There is a passage in On intelligence about the differences between parallel processing in human versus computers :
From the dawn of the industrial revolution, people have viewed the
brain as some sort of machine. They knew there weren't gears and cogs
in the head, but it was the best metaphor they had. Somehow
informa... | <urn:uuid:4e2434c7-881c-47a7-922d-d412827921b3> | 3.625 | 1,378 | Q&A Forum | Science & Tech. | 53.529127 |
Date: January 1, 1959
Description: With the assumptions that Berthelot's equation of state accounts for molecular size and intermolecular force effects, and that changes in the vibrational heat capacities are given by a Planck term, expressions are developed for analyzing one-dimensional flows of a diatomic gas. The sp... | <urn:uuid:ab30b57c-df72-4818-9b0c-4b1841f9a159> | 3.046875 | 229 | Academic Writing | Science & Tech. | 31.567098 |
Proceedings of the International Astronomical Union (2005), 2004:4748 Cambridge University Press
Nowadays, more than one hundred extra-solar planets are known, and about a dozen of multi-planetary systems have been discovered. Most of them have been detected by the radial velocity (RV) method. The recovery of orbital p... | <urn:uuid:99b65116-b661-429a-b76e-06694fb16baa> | 2.6875 | 600 | Academic Writing | Science & Tech. | 27.195116 |
Since you are having this confusion, I think it helps to consider the concepts of zero, infinity and "undefined".
In the most basic sense, division is the opposite of multiplication. Thus, the fact that 2 x 3 = 6 implies that 6 / 3 = 2.
1 x 0 = 0. Applying the above logic, 0 / 0 = 1. However, 2 x 0 = 0, so 0 / 0 must a... | <urn:uuid:f5ecf10f-b9a5-4afd-b6d2-50e952f5505b> | 3 | 565 | Q&A Forum | Science & Tech. | 71.001875 |
This shape would appear to be a rectangular prism.
The lateral area (area of every side except top and bottom) is given by the formula:
LA = ph (perimeter of the base multiplied by the height)
The surface area is then found by adding the LA to the areas of the Bases (top and bottom).
SA = LA + 2B
In your figure:
LA = 1... | <urn:uuid:511ac3d6-f1e2-46a9-9f2e-fc151104aeed> | 3.625 | 385 | Q&A Forum | Science & Tech. | 81.671952 |
As many know, this is the 150th anniversary of the publication of On the Origin of Species. If I may be so bold, one of the things that might distinguish our thinking about evolution in the last 50 years from the first hundred years might be the speed at which natural selection can operate. For a long time, we thought ... | <urn:uuid:30101667-01b1-4e3c-895f-4681fab593c3> | 3.109375 | 756 | Personal Blog | Science & Tech. | 54.689741 |
On November 25, 1952, three months after returning from England, Pauling finally made a serious stab at a structure for DNA.
The immediate spur was a Caltech biology seminar given by Robley Williams, a Berkeley professor who had done some amazing
work with an electron microscope. Through a complicated technique he was ... | <urn:uuid:bb706256-060f-4d0e-abdd-85b7887e5fba> | 3.921875 | 491 | Nonfiction Writing | Science & Tech. | 47.167632 |
Assume you have a planet of mass $M$ and radius $R$ and have a stationary spaceship at distance $4R$ from the center of the planet.If a projectile is launched from the spaceship of mass $m$ and velocity $v$ and just grazes the planet's surface, what will be the locus of the projectile?
I guess on Earth we take projecti... | <urn:uuid:1eec5fe0-6547-425a-bc78-ecd818d42c5a> | 2.921875 | 133 | Q&A Forum | Science & Tech. | 50.953205 |
Mission Type: Flyby
Launch Vehicle: 8K78 (no. T103-16)
Launch Site: NIIP-5 / launch site 1
Spacecraft Mass: 893.5 kg
Spacecraft Instruments: 1) imaging system and 2) magnetometer
Spacecraft Dimensions: 3.3 m long and 1.0 m in diameter (4 m across with the solar panels and radiators deployed)
Deep Space Chronicle: A Chr... | <urn:uuid:53817c6b-e149-4531-b0dd-eea6dbc743b2> | 3.671875 | 369 | Knowledge Article | Science & Tech. | 55.919265 |
Seen at the Air Force Space and Missile Museum at Cape Canaveral Air Force Station, Florida — it’s a model of the
Dinosaur Dynasoar space plane:
Likely the most poorly-named program ever conceived, the Dynasoar (for dynamic soaring) was an early attempt at making a reusable manned space plane — essentially a mini-shutt... | <urn:uuid:608f1efc-7218-4646-849b-f4f9f32d2d66> | 3.25 | 280 | Personal Blog | Science & Tech. | 24.512033 |
There are multiple variations of IF statements:
The simple IF construct is used to evaluate a Boolean condition and execute an appropriate set of commands. For instance the following example determines whether the current day of the week is Friday:
IF DATEPART(dw, GETDATE()) = 6 BEGIN PRINT 'TGI Friday' END
We can easi... | <urn:uuid:637a87cc-2f87-44da-b4da-484fcca5a7e0> | 3.046875 | 920 | Documentation | Software Dev. | 32.728608 |
by Anne E. Egger, Ph.D.
We all see changes in the landscape around us, but your view of how fast things change is probably determined by where you live. If you live near the coast, you see daily, monthly, and yearly changes in the shape of the coastline. Deep in the interior of continents, change is less evident – rive... | <urn:uuid:1d8cdccb-098e-46d2-97a3-50a9d15430c5> | 4.0625 | 2,938 | Academic Writing | Science & Tech. | 39.073182 |
RNA, ribonucleotide acid, is built up of a phosphate and nitrogenous base, a ribose sugar, and a phosphate. The bases used are adenine (A), cytosine (C), guanine (G) and uracil (U).
The chemical structure of RNA
There are four major groups of RNA: messenger RNA (mRNA), ribosomal RNA (rRNA), transfer RNA (tRNA) and sma... | <urn:uuid:f44e2793-140c-4216-818a-97021b96f284> | 3.90625 | 271 | Knowledge Article | Science & Tech. | 39.421532 |
Johannes Wilcke invented and then Alessandro Volta perfected the electrophorus over two hundred years ago. This device was quickly adopted by scientists throughout the world because it filled the need for a reliable and easy-to-use source of charge and voltage for experimental researches in electrostatics [Dibner, 1957... | <urn:uuid:c009257d-7858-4c03-97a8-b9e17e05b736> | 3.640625 | 1,544 | Tutorial | Science & Tech. | 43.789977 |
Science Fair Project Encyclopedia
GABA A receptor
The receptor is a multimeric transmembrane receptor that sits in the membrane of its neuron. Once bound to its ligand, the protein receptor changes confirmation within the membrane. This particular protein is configured in such a way as to allow certain ions to pass thr... | <urn:uuid:9474f750-6893-454a-97ac-d40a464838cf> | 3.75 | 365 | Knowledge Article | Science & Tech. | 25.149776 |
Telescopium, Indus, and Pavo - Downloadable article
Galaxies galore populate this trio of southern constellations.
March 3, 2009
|This downloadable article is from an Astronomy magazine 45-article series called "Celestial Portraits." The collection highlights all 88 constellations in the sky and explains how to observe... | <urn:uuid:8c98cbd5-d496-4c28-989a-afc0d6c2f9ea> | 2.953125 | 453 | Truncated | Science & Tech. | 49.291445 |
Solenoids produce magnetic fields that are relatively intense for
the amount of current they carry. To make a direct comparison,
consider a solenoid with 55 turns per centimeter, a radius of 1.25
cm, and a current of 0.170 A.
(a) Find the magnetic field at the center of the solenoid.
(b) What current must a long, strai... | <urn:uuid:41425225-25cf-43c5-9a50-529c0f09245d> | 3.484375 | 158 | Q&A Forum | Science & Tech. | 75.352751 |
is a project to create a GPL
that was started by Richard Stallman
, the creator of EMACS
. The GNU project is now overseen by the Free Software Foundation
, which Richard Stallman
GNU is a recursive acronym, and it stands for GNU's Not Unix. This, no doubt, is because of Richard Stallman's grounding in Lisp.
The GNU Pr... | <urn:uuid:0a2c6d37-67ce-4143-9f6b-60fe5ca7a85d> | 2.984375 | 140 | Knowledge Article | Software Dev. | 58.242236 |
From Physics Research Archive - Page 4
The Physics Classroom: Total Internal Reflection - Sep 16, 2010
The optical fiber in the photo above doesn't just guide the beam--the fiber produces the beam. Instead of a tube of helium and neon gas, or a piece of ruby, the "active medium" of this laser is added to the glass in t... | <urn:uuid:61a1c128-6043-43d5-acf4-3f35e7ec4ab0> | 2.703125 | 722 | Content Listing | Science & Tech. | 55.684473 |
Full Lab Manual
Introduction & Goals
Chemistry & Background
In Your Write-up
In this two-week experiment, you will learn how to use an ion-exchange column and how to carry out an acid-base titration using an indicator. You will then apply these skills to determine the total concentration of cations in a sample of seawa... | <urn:uuid:fe8bd937-b24a-4a54-bb26-43a48a944a00> | 3.453125 | 178 | Tutorial | Science & Tech. | 52.824545 |
Rhenium is a rare, silvery-white metallic element. Its atomic number is 75 and its symbol is Re. Rhenium was discovered in 1925 by a team of German scientists named Walter Noddack, Ida Tacke-Noddack, and Otto Berg. They discovered rhenium as a trace element in platinum ores and the mineral columbite. It is very dense. ... | <urn:uuid:c664e83e-de9f-4793-8ec6-412b4f0d26e6> | 4.21875 | 1,404 | Knowledge Article | Science & Tech. | 37.044087 |
Interrupt the execution of an expression and allow the inspection of the environment where
browser was called from.
browser(text = "", condition = NULL, expr = TRUE, skipCalls = 0L)
- a text string that can be retrieved once the browser is invoked.
- a condition that can be retrieved once the browser is invoked.
- An e... | <urn:uuid:a0f6a31d-26d9-465a-85af-fcef7ca88935> | 3.84375 | 690 | Documentation | Software Dev. | 58.462505 |
The following HTML text is provided to enhance online
readability. Many aspects of typography translate only awkwardly to HTML.
Please use the page image
as the authoritative form to ensure accuracy.
Engineering and Environmental Challenges: Technical Symposium on Earth Systems Engineering
The term Lupang Pangako means... | <urn:uuid:7084b5bd-239a-410e-b73d-f1d0e7c57a3d> | 3.453125 | 672 | Truncated | Science & Tech. | 26.027676 |
The Plasma Spray – Physical Vapor Deposition (PS-PVD) rig at NASA's Glenn Research Center uses new technology to create super thin ceramic coatings. Here, Bryan Harder, the lead for the PS-PVD, installs a sample in the rig. Image Credit: NASA
Turbines, or rotary engines that create power, have a multitude of uses. They... | <urn:uuid:f1431e61-97ca-4d5d-8075-51f535c02fe1> | 4.15625 | 1,834 | Knowledge Article | Science & Tech. | 41.229169 |
CR-39 is transparent in visible spectrum and is almost completely opaque in the ultraviolet range. It has high abrasion resistance, in fact the highest abrasion/scratch resistance of any uncoated optical plastic. CR-39 is about half the weight of glass and index of refraction only slightly lower than that of crown glas... | <urn:uuid:7294914f-5629-4204-9346-748aee0f98cf> | 2.9375 | 314 | Knowledge Article | Science & Tech. | 45.809195 |
The basic forces in nature
Contemporary Physics Education Project
The interactions in the Universe are governed by four forces (strong, weak, electromagnetic and gravitational).
Physicists are trying to find one theory that would describe all
the forces in nature as a single law.
So far they have succeeded in producing... | <urn:uuid:f6b8e300-5420-4e46-9c29-9b2d695a94b5> | 3.484375 | 475 | Content Listing | Science & Tech. | 45.407259 |
First we have the monarch
butterflies. These incredible creatures spend their summer
days in the northern parts and then migrate (leaving for another
place) to the south for the winter. They travel thousands of
miles - some almost 2900 km from Canada to Mexico. Just
looking at a map, you can see how far Canada is from ... | <urn:uuid:dbcddb3e-9989-4206-871b-4ac752667ccb> | 3.65625 | 381 | Personal Blog | Science & Tech. | 61.48327 |
From Ajax Patterns
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Foundational Technology Patterns
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|* [[Ajax App]] Create a rich application in a modern web browser.||* [[Ajax Ap... | <urn:uuid:d4fe2988-7fed-4572-bf1f-b9a2071aed13> | 2.734375 | 1,880 | Structured Data | Software Dev. | 34.996801 |
Welcome to http:/www.handsonuniverse.org/activities/Explorations/tactile-moonphases/
Try this instead: Link to alternate page with thumbnails linked to larger images.
SEE Project. http://analyzer.depaul.edu/SEE_Project/ These images are set for high contrast that suits the needs of individuals who are blind and visuall... | <urn:uuid:4887fdb1-88ee-4e89-94b6-35a801b59d0a> | 2.921875 | 350 | Tutorial | Science & Tech. | 54.619713 |
On New Year’s day, Comet Tuttle will be closest to the Earth, a mere 25 million miles away, and also at its brightest. The comet will just be visible to the unaided eye, so you will need to be observing from a very dark site.
A gallery of images, and sky maps of when and where to look, can be found at SpaceWeather.com.... | <urn:uuid:ad4b71d1-d528-4474-b6b5-5e55a81c8aed> | 3.59375 | 757 | Personal Blog | Science & Tech. | 64.333113 |
Splash (fluid mechanics)
In fluid mechanics, a splash is a sudden disturbance to the otherwise quiescent free surface of a liquid (usually water). The disturbance is typically caused by a solid object suddenly hitting the surface, although splashes can occur in which moving liquid supplies the energy. This use of the w... | <urn:uuid:4c6631d4-811f-4f47-be0c-a0d12013f51d> | 3.890625 | 383 | Knowledge Article | Science & Tech. | 46.962959 |
Also, it was also a place of owners to release fishes and other animals 'back to their nature'. Some of these released animals were not native in our region. Over time, a community of both native and invasive species is created within the longkang, eventually forming a longkang habitat.........
Recently, while walking ... | <urn:uuid:3c283a33-37c2-461a-849e-f638a2408d32> | 2.84375 | 614 | Personal Blog | Science & Tech. | 51.700766 |
We got hit by one 1,200 years ago.
It came from two colliding Neutron Stars from a few thousand light years away and scientists were just now able to pick it up because of the existence of carbon-14 in tree rings.
What did it do around the year 775 AD? Pretty much nothing. The estimate two-second blast had really zero ... | <urn:uuid:b7693f17-084a-4de8-97c7-e3b5d8861d95> | 3.375 | 286 | Personal Blog | Science & Tech. | 67.524745 |
Constructing an Open Box: An open box with a square base is requried to have a volume of 10 cubic feet.
a) Express the amount A of material used to make such a box as a function of the length x of a side of the square base. MY answer: S=x^2 + 4x(10/x^2)
b)How much material is required for a base 1 foot by 1 foot?
c)How... | <urn:uuid:2d56224e-e6b6-4dad-bb65-a20c6e83e07e> | 3.578125 | 140 | Q&A Forum | Science & Tech. | 96.726656 |
Martin Harwit has argued that we cannot have made more than ten per cent of the crucial discoveries in Astronomy. He uses what John Barrow aptly calls `the proof-readers argument'. If two independent readers look at a manuscript then it is possible to estimate, by comparing their different results, how many errors the... | <urn:uuid:d9323dd8-b6ab-4284-9ad8-2d96d4a50574> | 3.5 | 497 | Academic Writing | Science & Tech. | 52.79938 |
There are two different questions at work here, that you've kind of mashed together. The first question is "What is the speed at which a change in the electric field propagates?" The answer to that is the speed of light. In QED terms, the electromagnetic interaction that we see as the electric field is mediated by phot... | <urn:uuid:49279033-9e98-43e4-ba87-afe02bc68b49> | 3.515625 | 558 | Q&A Forum | Science & Tech. | 35.886967 |
In Jena, Graph is an interface. It abstracts anything that looks like RDF - storage options, inference, other legacy data sources.
The main operations are
addition, there are a number of getters to access handlers of various features
(query, statistics, reification, bulk update, event manager) .
Having handlers, rather... | <urn:uuid:4357bba8-8f33-427a-854e-0afa0f5e1dea> | 2.765625 | 909 | Personal Blog | Software Dev. | 41.344553 |
Science Fair Project Encyclopedia
Very nice diagrams of refraction (with the red lines). Very good at explaining the phenomenon.
I think that a rainbow is visible only when the sun is at a low altitude- mornings and late afternoon/ evenings. Isn't there some specific angle for this? KRS 15:33, 1 Feb 2004 (UTC)
- I adde... | <urn:uuid:be7c449a-7a83-4c19-9cde-e1a313a1a2b7> | 3.28125 | 997 | Comment Section | Science & Tech. | 68.455178 |
Histogram of the raw rainfall (mm) amount for running 3-month periods in chronological
order from 1955 through 1996. The seasonal cycle of the quartile boundaries (25 %ile: lower light line; 50 %ile [i.e., median]: dark line; and 75 %ile:
upper light line) are plotted with the actual rainfall amounts for the given peri... | <urn:uuid:54416580-72fc-46d4-8c33-021e084cae99> | 2.703125 | 181 | Structured Data | Science & Tech. | 68.527735 |
Common Lisp the Language, 2nd Edition
Several kinds of numbers are defined in Common Lisp. They are divided into integers; ratios; floating-point numbers, with names provided for up to four different floating-point representations; and complex numbers.
X3J13 voted in March 1989 (REAL-NUMBER-TYPE) to add the type real.
... | <urn:uuid:bcd01b03-abb2-4458-a8b2-0122562fb6ac> | 3.828125 | 283 | Documentation | Software Dev. | 36.567112 |
caroline apprend a nager elle prend des lecons de
In a coordinate plane, the points (2,4) and (3,-1) are on a line. Which of the following must be true? 1. The line crosses the x-axis. 2. The line passes through (0, 0). 3. The line stays above the x-axis at all times. 4. The line rises from the lower left to the upper ... | <urn:uuid:b893e824-8132-4f01-92ab-ecd84c5ffbe8> | 3.203125 | 364 | Comment Section | Science & Tech. | 88.598527 |
Yes - of course it does. Without "random" in front choice is an attribute with no object. I didn't actually do it, but thats what would happen - "choice is not defined blahblah" Is that the same as saying its not a "global namespace"?
I'd have to consult a reference book to be 100% sure. I'm not certain how a pure obje... | <urn:uuid:62be6a2b-62af-4b65-b55d-fa907187d43b> | 2.78125 | 764 | Comment Section | Software Dev. | 66.57796 |