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Constructing an octahedron and Kepler's conjecture To make an interesting skeletal model of an octahedron, start with 12 identical squares of paper or light card.
Net for the octahedron Downloaded from http: // mathworld. wolfram. com / pdf / Octahedron. pdf For more information, see the MathWorld entry http: // mathwo... | <urn:uuid:4609f201-efc1-4e08-8c9f-87ebe3e2ea74> | 3.8125 | 497 | Content Listing | Science & Tech. | 31.837121 | 1,900 |
Bangladesh capital has topped a list of cities facing the highest climate change risks in the coming years. Kolkata came seventh, Mumbai eighth while Delhi was in the 20th position.
The ranking of 50 cities was done by Maplecroft, a British firm specialising in risk analysis. The cities were chosen for their current an... | <urn:uuid:9390ef64-650e-4667-9143-3931f987acdb> | 2.703125 | 196 | News Article | Science & Tech. | 43.86968 | 1,901 |
But it isn't feasible to study every single species on the planet in depth- there are hundreds and thousands of types of insects alone! Fortunately, it has become clear that there are often many parallels between the biological systems at work in many types of creature, from yeast to humans. This had led to the establi... | <urn:uuid:1b764e9b-78a1-4944-bcac-3edaaf9857f6> | 3.375 | 1,014 | Knowledge Article | Science & Tech. | 43.703782 | 1,902 |
NASA said Tuesday it has suspended use of one of the mineral-identifying tools on the Opportunity Mars rover due to a problem.
The robot's thermal emission spectrometer was acting up, and engineers are obtaining data from it while troubleshooting.
The problem might be related to a malfunctioning optical switch that tel... | <urn:uuid:88a20404-f043-4c74-b994-8711903632c8> | 3.015625 | 294 | News Article | Science & Tech. | 44.957763 | 1,903 |
Treading Heavily on the Environment: China's Growing Eco-Footprint Highlighted in New Report
photo by Sheila via flickr
We've written about the concept of Eco-Footprint a number of times--what it is, how to calculate it, and how to reduce yours--and with the Olympics upon us it comes as no surprise that China's environ... | <urn:uuid:a71cbc30-cd29-430f-8b78-f08c2763a387> | 2.78125 | 1,097 | Personal Blog | Science & Tech. | 31.015367 | 1,904 |
A Publication of
The University of Montana
UM researchers unearth Cinnabar
Scientists track Greenland meltwater
New UM center offers healing tools for Indian Country
New Directions: Combining health with research
View is published twice a year by the offices of the Vice President for
Research and Development and Univer... | <urn:uuid:181f3c7a-cd04-45e9-b391-bd8c9d1af97c> | 2.953125 | 1,916 | News (Org.) | Science & Tech. | 54.664665 | 1,905 |
Classical General Relativity in more than four spacetime dimensions has been the subject of increasing attention in recent years. Among the reasons why it should be interesting to study this extension of Einstein’s theory, and in particular its black hole solutions, we may mention that
- String theory contains gravity ... | <urn:uuid:152ce7f1-8d02-4546-a969-0b59a15efdeb> | 2.765625 | 560 | Personal Blog | Science & Tech. | 27.993433 | 1,906 |
We have now seen four common concurrency concepts that can be used for programming concurrent application logic. However, there are still other concurrency concepts and language primitives for concurrent programming. We will now introduce the more interesting ones briefly. We give hints how they relate to the former co... | <urn:uuid:d19f365f-2f0f-4abf-9d5c-13108b4eb3cd> | 3.125 | 1,435 | Academic Writing | Software Dev. | 13.799393 | 1,907 |
Panama’s San Lorenzo forest reserve is around the size of Manhattan. For two years, this small area was host to 102 scientists, working together to count everything that crept and crawled. They came from 17 countries, and converged upon a half-hectare of the forest, about the size of half a rugby pitch. They dug into t... | <urn:uuid:02aa08dd-851d-4e0d-b30a-d216d7782699> | 3.828125 | 2,756 | Personal Blog | Science & Tech. | 55.634264 | 1,908 |
Posted on 29/3/07 by Tim Koschützki
What are prototypes?
Prototypes are generally used to test an idea in an existing system or before a real system is established. The goal of the prototype is to prove whether the components that will also be in the final system will work together as expected. Think of car manufacturi... | <urn:uuid:a1ccf7d3-6365-4a74-b617-00943ad1f761> | 3.21875 | 875 | Comment Section | Software Dev. | 47.013006 | 1,909 |
Published in Proceedings of the Symposium on Flow Measurement in Open Channels and Closed Conduits: Gaithersburg, MD, February 23, 1977, pages 471-477.
NOTE: At the time of publication, the author William Durgin was not yet affiliated with Cal Poly.
Laser doppler anemometers are non-invasive, linear, and inherently pre... | <urn:uuid:e6e5abc3-2225-4f82-8b81-7d9776397cbb> | 2.546875 | 393 | Academic Writing | Science & Tech. | 55.22637 | 1,910 |
Loggerhead sea turtle -
photographer DuBose Griffin
Sea turtles are among the largest reptiles in the world and inhabit almost every ocean. Fossil evidence indicates sea turtles shared the Earth with dinosaurs over 210 million years ago. Sea turtles are cold-blooded, air breathing, egg laying reptiles that deposit thei... | <urn:uuid:c58f1c00-d007-4911-81a1-8c24b1ecf1d9> | 3.4375 | 2,579 | Knowledge Article | Science & Tech. | 49.184602 | 1,911 |
One of the things that makes Groovy different than most compiled languages is that you can create functions that are first class objects. That is you can define a chunk of code and then pass it around as if it were a string or an integer. Check out the following code:
The curly braces around the expression "it * it" te... | <urn:uuid:b6d33570-ad4d-40de-bc7a-34ae185c0b9b> | 3.53125 | 1,104 | Documentation | Software Dev. | 59.822762 | 1,912 |
- dotTech - http://dottech.org -
The 411 on Process Virtual Machines
Posted By Samuel On November 8, 2011 @ 12:20 PM In Computer Programming | 6 Comments
Most everyone uses ones of these every day and don’t know it. Some that do know either don’t understand it or, even worse, misunderstand it. Yet if anyone ever ran a ... | <urn:uuid:20124401-5a17-4b4a-ad32-289e1d4797f7> | 2.609375 | 836 | Personal Blog | Software Dev. | 68.593397 | 1,913 |
DSSS: Determining chemical and microbial Fe(II) oxidation kinetics in situ: How well do organisms compete with chemical oxidation?
- Who: George W. Luther, Ph.D., University of Delaware
- What: Download the file (pdf)
- Where: Building 66, Auditorium
- When: 10:30 am to 12:00 noon, February 8, 2013
- Why: About the Dis... | <urn:uuid:f7b74ce6-7c20-4874-8bf3-085688534b2a> | 2.640625 | 478 | Academic Writing | Science & Tech. | 21.171537 | 1,914 |
Winter forecast, part I: the woolley bear prediction
According to legend, the severity of the upcoming winter can be judged by examining the pattern of brown and black stripes on woolly bear caterpillars--the larvae of Isabella tiger moths. If the brown stripe between the two black stripes on either end of the caterpil... | <urn:uuid:8e8b145c-f474-45ec-9cf6-f8000160a666> | 2.65625 | 1,164 | Personal Blog | Science & Tech. | 54.575672 | 1,915 |
Synthetic biology is getting a boost. So far, most researchers have designed their synthetic circuits using transcription factors found in bacteria. However, these don’t always translate well to nonbacterial cells and can be a challenge to scale. Now, researchers have come up with a new method to design transcription f... | <urn:uuid:55bb7b24-eee7-444d-99cc-c57087535dd1> | 3.484375 | 651 | News Article | Science & Tech. | 51.474598 | 1,916 |
If you want to make programs go faster on parallel hardware, then you need some kind of concurrency. Right?
In this article I’d like to explain why the above statement is false, and why we should be very clear about the distinction between concurrency and parallelism. I should stress that these ideas are not mine, and ... | <urn:uuid:f25cf6db-310e-4606-bb3a-6a03073faf3d> | 3.3125 | 1,370 | Personal Blog | Software Dev. | 38.299249 | 1,917 |
Nonlinear Complex Resistivity
complex resistivity (NLCR) is a geophysical method of stimulating materials
with an electrical current sine wave of variable frequency and measuring
the voltage response. The ratio of the amplitudes of the voltage
to the current normalized by the geometry of the electrodes is the magnitude... | <urn:uuid:48c7089b-7243-45b2-9ab7-c054ed071daf> | 3.28125 | 339 | Knowledge Article | Science & Tech. | 20.921333 | 1,918 |
Download these brochures:
OASIS English OASIS French OASIS Inuktitut OASIS Cree
Not much is known about the chemistry in the air over the Arctic Ocean, and what happens to important chemicals is hardly studied by the scientific community because of the difficulty of working in this cold, inhospitable environment.
There... | <urn:uuid:00d108e4-d8e8-4299-a75a-b2a8861f8926> | 3.234375 | 525 | Knowledge Article | Science & Tech. | 31.099934 | 1,919 |
Date of Degree
MS (Master of Science)
Civil and Environmental Engineering
Michelle M. Scherer
Iron is ubiquitous in the environment mostly as stable iron hydr(oxides) such as hematite (α-Fe2O3) and goethite (α-FeOOH). The Fe(II)-Fe(III) redox couple plays a vital role in nutrient cycling, bacteria respiration, and cont... | <urn:uuid:7f27e322-47fd-41f0-9a8c-4431ed8fb676> | 2.625 | 648 | Academic Writing | Science & Tech. | 28.569501 | 1,920 |
I'm interested in learning the basics of nanotechnology, in particular, how nano-scale materials are constructed. What kinds of equipment are used? How are samples evaluated? etc. Does anyone have any recommendations?
asked Jul 27 '11 at 14:43
According to bestintrobook.com it's Fundamentals of Microfabrication and Nan... | <urn:uuid:69bc3fc4-e2a8-44b1-9957-0cad050f24ed> | 2.71875 | 495 | Q&A Forum | Science & Tech. | 49.128107 | 1,921 |
Provided by: manpages-dev_3.23-1_all
feclearexcept, fegetexceptflag, feraiseexcept, fesetexceptflag,
fetestexcept, fegetenv, fegetround, feholdexcept, fesetround, fesetenv,
feupdateenv, feenableexcept, fedisableexcept, fegetexcept - floating-
point rounding and exception handling
int feclearexcept(int excepts);
int feg... | <urn:uuid:94b93e3d-cde9-450b-8870-519677c7f27f> | 3.03125 | 1,801 | Documentation | Software Dev. | 38.007257 | 1,922 |
Send Your Name to Mars
For all those who submitted your names, Congratulations! Your name was successfully etched onto a microchip and is officially on Mars!
How did NASA collect the names? More than 1.2 million names were submitted on our web site over a one year period! Some 20,000 visitors to NASA’s Jet Propulsion L... | <urn:uuid:391a9b61-a76c-451d-9921-dbca6e9262b5> | 3.59375 | 277 | News (Org.) | Science & Tech. | 46.834006 | 1,923 |
Search Journal of Online Mathematics and its Applications:
Journal of Online Mathematics and its Applications
Page 1 of 1
Dealing with Data: A 'Simple' Linear Fit
[Note: The activities in this module make reference to the computer algebra system (CAS) Maple. Any other CAS can be used instead (e.g., Mathematica, Mathcad... | <urn:uuid:3afc882f-3743-40dc-b6ea-15777e6ec5c4> | 3.484375 | 1,704 | Documentation | Science & Tech. | 53.700603 | 1,924 |
History of Fractions
Date: 12/7/95 at 9:30:11 From: Anonymous Subject: History of Fractions I have several math classes coming to our school media center next week to research the history of fractions. The problem is, our media center does not have the right resources to help students with their assignment. They are tr... | <urn:uuid:10ea4a66-b38a-40ef-a43a-ed5049dfd923> | 3.5 | 632 | Comment Section | Science & Tech. | 62.218113 | 1,925 |
Arcs, Cevians, Tangents
Theorem 4.5 The lines tangent to the circumcircle of a triangle at its vertices cut the opposite sides in three collinear points.
The proof in the text is as follows: Let the tangent to the circumcircle at A meet line BC at L. Then Angle BAL is congruent to angle C since each angle is measured b... | <urn:uuid:a48c710c-cee8-4d73-8702-0f1548da2c2b> | 3.375 | 318 | Q&A Forum | Science & Tech. | 71.270484 | 1,926 |
|El NiƱo-Southern Oscillation
The most common way of monitoring the El NiƱo-Southern Oscillation phase is by looking at sea surface temperatures in the equatorial Pacific Ocean. The animated map below shows sea surface temperature anomalies over the past three months. Warm/positive anomalies are associated with the E... | <urn:uuid:5e01c03d-a1e5-4b30-abfe-34ab14544b5c> | 3.28125 | 323 | Knowledge Article | Science & Tech. | 27.113896 | 1,927 |
Dog lovers in search for the right canine are often faced with the challenge of choosing between a mutt and a pure breed. Most of these people would never expect that their own curiosities are also shared by ecologists.
Hybrids are a symbol of complexity. For several decades these mixed species have challenged ecologis... | <urn:uuid:5e597cde-5bee-4b5c-ada7-9123d53ac027> | 3.203125 | 377 | News Article | Science & Tech. | 16.875419 | 1,928 |
Crab Pulsar emits light at highest energies ever detected in a pulsar system, scientists report
By Kim DeRose October 06, 2011 Category: Research
An international team of scientists has detected the highest energy gamma rays ever observed from a pulsar, a highly magnetized and rapidly spinning neutron star.
The VERITAS... | <urn:uuid:48c1f916-0234-4f71-a55e-9fde92703c11> | 3.28125 | 1,382 | News Article | Science & Tech. | 32.874292 | 1,929 |
Can you design a new shape for the twenty-eight squares and arrange
the numbers in a logical way? What patterns do you notice?
In a square in which the houses are evenly spaced, numbers 3 and 10
are opposite each other. What is the smallest and what is the
largest possible number of houses in the square?
Exactly 195 di... | <urn:uuid:560d7182-0fc5-480e-856a-12c1b58c9970> | 3.234375 | 92 | Q&A Forum | Science & Tech. | 67.824615 | 1,930 |
The manned research submersible Alvin.
September 8 - October 1, 2001
The Deep East Expedition completed its field season on October 1. Scientists explored three regions of the Atlantic Ocean, from Maine to Georgia, including the submarine canyons of Georges Bank and Bear Seamount off the New England coast; Hudson Subma... | <urn:uuid:25d2e1c4-c7e1-4ead-a970-89b1a6a25b89> | 3.40625 | 2,884 | Knowledge Article | Science & Tech. | 51.487519 | 1,931 |
As Saturn's rings orbit the planet, a section is typically in the planet's shadow, experiencing a brief night lasting from 6 to 14 hours. However, once approximately every 15 years, night falls over the entire visible ring system for about four days.
This happens during Saturn's equinox, when the sun is directly over S... | <urn:uuid:a375f17c-fb83-4a04-8aad-e7f32ed9f6d1> | 3.96875 | 1,360 | News Article | Science & Tech. | 50.184288 | 1,932 |
Ion strings make brilliant beams
Aug 15, 2001
Physicists have long struggled to combat heating in the ion beams used in high-energy experiments. Laser cooling can be used to reduce collisions between the ions, which create heat and reduce the energy of the beam. Now Ulrich Schramm and colleagues at the University of Mü... | <urn:uuid:bc6e3879-d2fd-478e-832b-124df80bfc06> | 3.59375 | 529 | Truncated | Science & Tech. | 42.617974 | 1,933 |
Notes to Being and Becoming in Modern Physics
1. As translated in Wheelwright (1960). The quote by Parmenides in what follows is also from this volume.
2. Many recent papers on these issues are collected in Oaklander and Smith (1994). Gale (1967) has some good older papers and a useful bibliography.
3. There are many e... | <urn:uuid:5132acbb-61dc-4b6f-80ce-8fbdd21025ef> | 2.59375 | 869 | Academic Writing | Science & Tech. | 46.579159 | 1,934 |
A range of designs have been proposed for space habitats. Some appear to be mostly artistic concepts, others are much more serious. They include:
(From Wikipedia http://en.wikipedia.org/wiki/Space_habitat)
- Bernal sphere - "Island One", a spherical habitat for about 20,000 people.
- Stanford torus - A larger alternati... | <urn:uuid:6a270838-120e-4dc2-bbe9-cf890b8f9054> | 3.375 | 2,625 | Personal Blog | Science & Tech. | 55.352559 | 1,935 |
Layzej writes "Two new papers indicate that we are likely already seeing some of the predicted impacts of global warming. The first used Monte Carlo simulations to analyze how many new record events you expect to see in a time series with a trend. They applied the technique to the unprecedented Russian heat wave of Jul... | <urn:uuid:346d42c8-2bb5-4cf2-a2d3-bddeacb77888> | 2.9375 | 175 | Comment Section | Science & Tech. | 36.036644 | 1,936 |
P.O. Box 98199
Washington, DC 20090-8199
The famous Cambrian Explosion- a rapid diversification of animal groups about 550 million years ago- assumes a rather diminished significance when mapped to the full Tree of Life.
update: yes, I made the diagram myself, by modifying this.
That’s a very nice illustration to put i... | <urn:uuid:b490f88d-790e-4574-91e6-277481c04872> | 3.25 | 502 | Comment Section | Science & Tech. | 36.910476 | 1,937 |
SLOSH (Sea, Lake and Overland Surges from Hurricanes) is a computerized model run by the National Hurricane Center (NHC) to estimate storm surge heights and winds resulting from historical, hypothetical, or predicted hurricanes by taking into account pressure, size, forward speed, track and winds.
Graphical output (124... | <urn:uuid:5e904fc9-0c1a-484f-87b9-b790d6416511> | 3.234375 | 462 | Knowledge Article | Science & Tech. | 35.896066 | 1,938 |
Sci. STKE, 12 September 2006
PLANT BIOLOGY Touché! Plants and Bacteria Battle at Leaf Pores
Plants have special openings on the surface of the leaf known as stomata, which allow gas exchange essential for respiration and osmotic balance. However, the stomata also provide a route by which infectious bacteria can gain ac... | <urn:uuid:5f6a3fc9-0fad-4906-89a7-fe02130381e2> | 3.515625 | 493 | Academic Writing | Science & Tech. | 43.048826 | 1,939 |
This, from the free daily UK paper called the Metro:
- "If you felt a bit soggy while walking through the snow this week, it's because your relatives were sponges. Well, your ancestors who lived 635 million years ago were.
Mankind is thought to have evolved from primitive sea sponges, according to a study of fossils fo... | <urn:uuid:6e02f333-c3d3-43c0-a9cc-020297cd2558> | 3.125 | 523 | Comment Section | Science & Tech. | 47.497408 | 1,940 |
WordCount Example in Python
The program reads text files and counts how often words occur. The input is text files and the output is text files, each line of which contains a word and the count of how often it occured, separated by a tab. To create some input, take your a directory of text files and put it into DFS.
bi... | <urn:uuid:84d7d53e-7a88-4b17-817f-c836c9ec7b43> | 3.546875 | 288 | Documentation | Software Dev. | 76.271389 | 1,941 |
Bacteria's gold-making trick revealed
Eureka! Scientists say they have discovered how a bacteria turns water-soluble gold into microscopic nuggets of solid gold.
The bacteria Delftia acidovorans is frequently found on the surface of tiny gold nuggets.
Its presence led scientists to speculate it may be creating the part... | <urn:uuid:0ccb8fa3-3414-4eda-98ee-4883a37ef481> | 3.765625 | 422 | News Article | Science & Tech. | 41.996639 | 1,942 |
Fluid Thread Patterns
Thin threads of fluids show how conveyor belt speeds control fluid pattern behavior in both experiments and models. A thin thread of viscous fluid (translucent threads at left) is poured onto a moving belt, creating a dazzling array of intricate patterns. Simulations (gold threads at right) reprod... | <urn:uuid:a6b79502-7ba7-46fb-a1c2-3dd995d5c3ea> | 3.421875 | 109 | Truncated | Science & Tech. | 34.683 | 1,943 |
Methane in the Earth's atmosphere is an important greenhouse gas, so far accounting for about 20 percent of the global warming caused by human activity — more than any other gas except CO2. It has a global warming potential of 25 over a 100-year period, meaning that a methane emission will have 25 times the impact on t... | <urn:uuid:6b424ad5-4139-4517-b019-673e93bfcc2c> | 4.53125 | 850 | Knowledge Article | Science & Tech. | 27.425224 | 1,944 |
In this blog i have explained OOPS Features of C# in brief to help new comer's to crack an interview,i have explained these feature in brief because of focsing on new comer's to give them a idea how to answer thes questions which are often asked in an interview .
programming in which data is logically represented in th... | <urn:uuid:886541f2-eb3a-4752-b999-da437f733bce> | 3.359375 | 587 | Personal Blog | Software Dev. | 49.700203 | 1,945 |
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- Size Selective Recognition of siRNA by an RNA Silencing Suppressor
Cell, Volume 115, Issue 7, 26 December 2003, Pages 799-811
Jeffrey M Vargason, György Szittya, József Burgyán and Traci M.T... | <urn:uuid:524dab5e-865d-461a-a694-96cc87b1fb6d> | 2.609375 | 788 | Content Listing | Science & Tech. | 26.052679 | 1,946 |
Sea level is on the rise, which means my excellent day at the Jersey Shore might not be so much fun a few decades from now
On April 19th, 2012, Climate Central's Ben Strauss testified before the Senate committee on Energy and Natural Resources on the impact of sea level rise.
This NOAA animation shows the locations of ... | <urn:uuid:0f3940ec-29ad-4d70-8fde-c1161d04beb8> | 3.21875 | 254 | Content Listing | Science & Tech. | 49.974354 | 1,947 |
Following the line of the article posted by A.Riazi, Solving engineering problem using MATLAB C API, I will show in this small example how to use M Functions inside our VC++ 6 project.
The project calculates the convolution of two vectors, and shows the resulting vector in the MsChart control. The function that perform... | <urn:uuid:617eaeb4-cee8-4db0-8024-0a783be0d3f3> | 2.546875 | 1,040 | Documentation | Software Dev. | 59.724506 | 1,948 |
Tag Archives: About Energy
What is the largest source of renewable energy in the United States? Hydropower accounted for 63% of the electricity generated from renewable sources and 6% of total U.S. electricity in 2001. Learn more about the largest, and one of the oldest, sources of renewable energy with information and... | <urn:uuid:760221e9-1874-4ca1-b68a-a850b83c63b3> | 2.5625 | 234 | Content Listing | Science & Tech. | 24.138928 | 1,949 |
Boreal Tree Growth Slows as Climate Warms
It appears that climatic warming in boreal forests has pushed many trees beyond the limits of their optimal growing conditions. In recent decades, the growth rates of northern conifers often slowed down when temperatures got abnormally high.
American scientists examined widths ... | <urn:uuid:ae1beab5-445d-450f-ae96-39d5ad2ada81> | 3.84375 | 441 | Academic Writing | Science & Tech. | 35.566011 | 1,950 |
Indications of volcanic activity on Venus
8 April 2010
DLR scientists evaluate data from the VIRTIS infrared spectrometer
3-D radar image of the Maat Mons volcano on Venus
Although some uncertainty remains, the most recent infrared data from VIRTIS (Visible and Infrared Thermal Imaging Spectrometer) seem to confirm it.... | <urn:uuid:88586543-1d41-4451-ad77-dfe6569a192d> | 3.234375 | 975 | Knowledge Article | Science & Tech. | 37.825036 | 1,951 |
In a recent breakthrough, researchers at the Massachusetts Institute of Technology (MIT) have made great strides into what could be the future of solar power.
Their methods have replicated a process from the natural world that is so basic and universal as to almost beg the question why someone didn’t come up with it be... | <urn:uuid:56ac33c4-65e9-4086-9457-3004c8aa6d26> | 4.09375 | 465 | News Article | Science & Tech. | 38.533028 | 1,952 |
Nematodes are nonsegmented roundworms that are abundant in freshwater lakes. Nematodes often comprise 15% of the total biomass on lake bottoms. This reflects the incredible abundance of these organisms, since most only grow to a maximum length of a centimeter.
Life stages of these species are often as complex as they a... | <urn:uuid:692fb250-5513-48d8-9012-6601c442388e> | 4.21875 | 1,162 | Knowledge Article | Science & Tech. | 32.649554 | 1,953 |
Predation Did Not Come from Evolution
by Daniel Criswell, Ph.D. *
Although the origin of predation is poorly understood, it is incorrect to attribute to young-earth creation the assertion that predatory animals quickly and recently evolved the physical features necessary for predation. It is a common fallacy that carni... | <urn:uuid:7c3ae2d6-280f-4242-becc-3823e717b85e> | 3.453125 | 931 | Truncated | Science & Tech. | 43.610463 | 1,954 |
This is part 1 of 2. Part 2 is my Guide to the use of Semantic HTML Elements
I’ve seen a lot of articles discussing the importance of HTML and XHTML semantics. I’ve seen articles describing what it means for a document to be semantic. Most of these articles, however, don’t provide a serious overview of what HTML elemen... | <urn:uuid:3e87c193-01d3-467a-90b8-dfb6ef04243d> | 3.21875 | 950 | Personal Blog | Software Dev. | 42.369613 | 1,955 |
MoEDAL (the Monopole and Exotics Detector At the LHC) is the newest of the experiments that will investigate particle collisions at the Large Hadron Collider. Approved by the CERN Research Board in December 2009, the MoEDAL experiment will search for very specific exotic particles.
The experiment is relatively small, c... | <urn:uuid:6ffea5e4-250a-4692-b981-b5819cd5cbb3> | 2.5625 | 290 | Knowledge Article | Science & Tech. | 39.751499 | 1,956 |
NASA appears to have resolved problems with a new urine recycling system on the International Space Station, bolstering hopes it will be able to expand the research outpost's crew next year, officials at the space agency said on Tuesday.
Reusing wastewater is essential for doubling the size of the crew living aboard th... | <urn:uuid:886b3765-c97c-4d9f-ba8c-ad35bb8fd82c> | 3.03125 | 788 | News Article | Science & Tech. | 51.220898 | 1,957 |
SWADDLED in a cloud of dust and gas, a baby solar system 450 light years away offers one of the best peeks yet at what our sun may have looked like in its infancy. The star is surrounded by enough raw material to build at least seven Jupiter-sized planets.
But it was unclear from previous studies whether the disc of de... | <urn:uuid:bd4e97be-5a07-4e0f-bebe-669f6473ee53> | 3.234375 | 276 | Truncated | Science & Tech. | 45.490964 | 1,958 |
Air Pressure and Resistance
Name: Loretta H.
Is there a relationship between air pressure and air
resistance? Recently, I had said that the air resistance acting on a
falling object is actually the air pressure that is acting on the object.
This did not sound right. Air pressure that is acting on an object is I
know a ... | <urn:uuid:06d4b085-8c24-4c00-8131-bf1405beaba3> | 3.40625 | 1,390 | Q&A Forum | Science & Tech. | 53.916471 | 1,959 |
Non-Luminary World Classification Scheme
The Non-Luminary World Classification Scheme, or NoLWoCS, is a near standard classification method used to identify the many different forms of planetary bodies, minor worlds, and artificial structures that have evolved naturally or that have been created by the many societies a... | <urn:uuid:ff3f3ca9-0abe-46d5-8983-695a17f99e41> | 2.96875 | 3,644 | Knowledge Article | Science & Tech. | 29.490865 | 1,960 |
CORRECTED-Warming temperatures could multiply Katrina-like hurricanes -study
(Corrects that IPCC assesses but does not run computer simulations, and expands range of warming, paragraph 5)
* Extreme storms most sensitive to rising temperatures
* Number of strong hurricanes could increase seven-fold
By Environment Corres... | <urn:uuid:da86b2d3-85d0-4b75-8994-21e41bccc284> | 3.125 | 745 | News Article | Science & Tech. | 34.883455 | 1,961 |
Cicada wing surface biomimicry could lead to anti-bacterial surfaces
While many research groups throughout the world seek for better ways to fight bacteria, an international research group of researchers Australia’s Swinburne University of Technology and Spain’s Universitat Rovira i Virgili investigated cicada insect a... | <urn:uuid:c116f962-cf40-4972-917c-36bf4d532447> | 3.53125 | 647 | News Article | Science & Tech. | 16.61125 | 1,962 |
Jan. 22, 2005 Taking stock of the stuff between the stars - the all-important dust and gases that are the building blocks of new stars - has never been easy.
The interstellar medium, as scientists know it, is a murky, nebulous place that defies easy measurement. Yet probing the space between the stars and the star-buil... | <urn:uuid:9ac51198-3a7e-4dd5-99e9-80ec2f131460> | 3.609375 | 896 | News Article | Science & Tech. | 41.113771 | 1,963 |
NASA Airborne Science Campaign Begins Antarctic Sequel
Greenbelt MD (SPX) Oct 27, 2010
Scientists returned this week to the Southern Hemisphere where NASA's Operation IceBridge mission is set to begin its second year of airborne surveys over Antarctica. The mission monitors the region's changing sea ice, ice sheets and... | <urn:uuid:3f803268-3a9d-4167-9aef-907c1873f7f3> | 2.75 | 991 | News Article | Science & Tech. | 33.420098 | 1,964 |
Unveiling the hidden universe: infrared observatory clears up dusty tales.Peek in any apartment window, it's said, and you'll discover a unique story.
The same is true of the heavens, except that skywatchers face a special challenge. The windows through which they view the cosmos are often clouded by dust. An observer ... | <urn:uuid:43ece1f0-99e6-4cc7-be9e-0d2b704844c1> | 3.34375 | 3,088 | Truncated | Science & Tech. | 42.183281 | 1,965 |
Posted on Mar 08, 2011 | Comments 0
The U.S Department of Defense has teamed up with the Department of Energy for a great green idea, which will develop energy storage. It may sound odd for many but the U.S military is already involved in many environmental initiatives.
Nowadays these two Departments have shown a real ... | <urn:uuid:1fa668f5-d873-4c64-b38f-6e2d7210b0b1> | 3.203125 | 530 | News Article | Science & Tech. | 54.19204 | 1,966 |
Next: 8.7 Input
Up: 8.6 Output
Previous: 8.6.4 Boxes and Lines
- void bkgdset(ch)
void wbkgdset(win, ch)
Set the background character and attribute for the screen or a window.
The attribute in ch will be ORed with every non blank
character in the window. The background is then part of the window
and will not be changed... | <urn:uuid:5586ee43-d409-410f-bcba-8c08b6dca9d0> | 2.6875 | 144 | Documentation | Software Dev. | 98.608152 | 1,967 |
American Burying Beetle Conservation Centre
To survey existing populations and reintroduce captive-bred American burying beetles into their former range in the USA
American burying beetles, Nicrophorus americanus, just about 3 cm long, are master scavengers, cleaning the environment as they bury dead small mammals and ... | <urn:uuid:0f4fc096-9aaa-4ccf-9de2-c1f2ea4c8e9b> | 3.515625 | 498 | Knowledge Article | Science & Tech. | 31.898037 | 1,968 |
This image shows a subsurface explorer on the surface of Mars (this is an artist's rendition). Such subsurface explorers would help us look for water and organic material below the surface of Mars. A "robotic mole" like this one would also test to see what minerals make up the Martian interior. One of the proposals doe... | <urn:uuid:bec0cb6b-14ef-4a14-89d3-b9a0d5fb7b4c> | 3.578125 | 646 | Content Listing | Science & Tech. | 58.232221 | 1,969 |
In 1989 a space weather storm caused an electrical blackout in Canada. The black area on this map shows where people lost their electrical power for many hours.
Click on image for full size
Image courtesy of M. A. Shea, Geophysics Directorate, Phillips Laboratory.
Power Blackout Caused by Space Weather Storm
In 1989 a ... | <urn:uuid:fcc08313-76f5-4bca-9b28-7794e729c83b> | 3.484375 | 561 | Knowledge Article | Science & Tech. | 54.207723 | 1,970 |
Mathematica Notebook for This Page.
All trignometric functions sine, cosine, tangent, secant, cosecant, cotangent can all be simply defined in terms of a single function sine. Sine, as associated with trigonometry, began in early civilization as a very important measuring science. When the function concept and calculus... | <urn:uuid:045fd621-b315-45a4-b532-be448460ba76> | 4.125 | 544 | Tutorial | Science & Tech. | 48.515928 | 1,971 |
Classifying North Atlantic Tropical Cyclone Tracks by Mass Moments
Jennifer A. Nakamura; Upmanu Lall; Yochanan Kushnir; Suzana J. Camargo
- Classifying North Atlantic Tropical Cyclone Tracks by Mass Moments
Nakamura, Jennifer A.
Camargo, Suzana J.
- Lamont-Doherty Earth Observatory
- Permanent URL:
- Book/Journal Title... | <urn:uuid:08c69399-ea2b-4b8d-b0a4-63744e9b01aa> | 2.625 | 281 | Content Listing | Science & Tech. | 22.503419 | 1,972 |
Today marks a major milestone in the development of the Go programming language. We're announcing Go version 1, or Go 1 for short, which defines a language and a set of core libraries to provide a stable foundation for creating reliable products, projects, and publications.
Go 1 is the first release of Go that is avail... | <urn:uuid:f4d90a6a-5c98-4f34-93a6-86c8c8f0db15> | 2.6875 | 623 | News (Org.) | Software Dev. | 44.150903 | 1,973 |
During each day of January 2013, I am creating a new video showing you how to use the new C++Builder XE3 compilers for Win32, Win64 and OSX to create multi-platform, database, multi-tier, HD and 3D applications. In this twenty-second video you will learn how to include inline assembly language code using the C++Builder... | <urn:uuid:0ca1e42e-ffef-4111-9323-421d246797d8> | 2.515625 | 563 | News (Org.) | Software Dev. | 70.167323 | 1,974 |
February 20, 2013 | 14
When a 17-meter asteroid barreled into Earth’s atmosphere over central Russia on February 15, releasing a powerful shock wave that injured more than 1,000 people, many observers wondered how such a momentous event could arrive unheralded. The fact is, the object that exploded in a fireball over C... | <urn:uuid:cfbc9939-5a4f-4402-b670-6de67ebb0dfd> | 3.96875 | 969 | News Article | Science & Tech. | 35.309164 | 1,975 |
Serving wine usually involves a rather elaborate ceremony in which the host tastes the wine before pouring it for the guests. One reason for this is the possibility that the wine may have been spoiled by exposure to air.
Certain bacterial enzymes are capable of converting ethanol to ethanoic acidIn Arrhenius theory, a ... | <urn:uuid:e66e40a8-9165-40c0-9c90-f4295980351d> | 3.515625 | 1,194 | Knowledge Article | Science & Tech. | 32.01548 | 1,976 |
Biodiversity's Ticking Time Bomb: Understanding and Addressing the Problem of Invasive Species in Europe
28 January 2013 | News story
On 21 February 2013, IUCN and BirdLife, with the support of the European Habitats Forum, will organize a high-level debate at the European Parliament in Brussels to discuss the issue of ... | <urn:uuid:49ffdf31-da2f-4812-a163-ea3ab51e79ca> | 2.609375 | 625 | News (Org.) | Science & Tech. | 17.59086 | 1,977 |
Just to clear up a common misconception, one that seems to be at the root of every newcomer's approach to coding for standards, you do not use divs instead of tables. That's important enough to repeat, "you do not use divs instead of tables".
What do you use? You use well structured, semantic and well formed html inste... | <urn:uuid:9d2852e2-12ae-406e-8b2b-a3c32618f5e4> | 2.765625 | 267 | Personal Blog | Software Dev. | 58.425177 | 1,978 |
|Back to . . .
Clerk Maxwell ( 1831-1879 )
14 India Street
epoch ended and another began with James Clerk Maxwell."
"The special theory
of relativity owes its origins to Maxwell's
equations of the electromagnetic field."
James Clerk Maxwell was one of the greatest scientists and
mathematicians of the 19th century. With... | <urn:uuid:944e23b5-e2d2-48db-9603-b8e7fe4abc96> | 3.203125 | 1,160 | Knowledge Article | Science & Tech. | 47.083809 | 1,979 |
Penguins on a treadmill - the latest (and most bizarre) way to save the planet
Scientists put monitors on birds in expirement to chart global warming
Last updated at 21:17pm on 7th April 2007
They may look absolutely bizarre ... but these king penguins struggling on a treadmill could help to save the planet.
Scientists... | <urn:uuid:aa5c3569-450b-4592-8c24-b4da2a5d538f> | 2.984375 | 613 | News Article | Science & Tech. | 55.960647 | 1,980 |
#include <stdlib.h>char *getpass(const char *prompt);
#include <unistd.h>char *getpass(const char *prompt);
The getpass() function opens the process's controlling terminal, writes to that device the null-terminated string prompt, disables echoing, reads a string of characters up to the next newline character or EOF, re... | <urn:uuid:1960dbfd-a7c7-471a-bfcb-14f2049c3a7a> | 3.015625 | 323 | Documentation | Software Dev. | 43.052737 | 1,981 |
|Skip Navigation Links|
|Exit Print View|
|man pages section 3: Curses Library Functions Oracle Solaris 11 Express 11/10|
- get a single-byte character from the terminal
cc [ flag... ] file... -I /usr/xpg4/include -L /usr/xpg4/lib \ -R /usr/xpg4/lib -lcurses [ library... ] c89 [ flag... ] file... -lcurses [ library... ... | <urn:uuid:a4abd555-36c3-4526-a217-f59c4fc072a3> | 2.828125 | 699 | Documentation | Software Dev. | 54.870903 | 1,982 |
The Application Programmer's Interface to Python gives C and C++ programmers access to the Python interpreter at a variety of levels. The API is equally usable from C++, but for brevity it is generally referred to as the Python/C API. There are two fundamentally different reasons for using the Python/C API. The first r... | <urn:uuid:da5fb3b0-48cd-4024-9047-45131b2274e3> | 2.96875 | 244 | Documentation | Software Dev. | 28.808571 | 1,983 |
Partition function (statistical mechanics)
In physics, a partition function describes the statistical properties of a system in thermodynamic equilibrium. They are functions of temperature and other parameters, such as the volume enclosing a gas. Most of the aggregate thermodynamic variables of the system, such as the ... | <urn:uuid:2d23088a-355c-4d5a-89fb-97e7d23e4b29> | 3.453125 | 2,195 | Knowledge Article | Science & Tech. | 30.677008 | 1,984 |
sth is right. You can also use os.popen(), but where available (Python 2.4+) subprocess is generally preferable.
However, unlike some languages that encourage it, it's generally considered bad form to spawn a subprocess where you can do the same job inside the language. It's slower, less reliable and platform-dependent... | <urn:uuid:ce066de4-b043-45a7-a206-5c651d394563> | 3.09375 | 228 | Q&A Forum | Software Dev. | 73.124533 | 1,985 |
Our Solar System: In Order From the Sun
7 of 10
The sixth planet from the Sun is the majestic Saturn. It takes 29 years for Saturn to make one trip around the Sun. Orbiting this giant, gas-filled planet are its famous rings. The rings are a collection of billions of boulder-sized chunks of ice. Saturn's intense gravita... | <urn:uuid:b13dd7f6-d747-409d-9fd4-1edc25b78540> | 3.015625 | 104 | Listicle | Science & Tech. | 66.732143 | 1,986 |
See also the
Dr. Math FAQ:
Browse High School Sequences, Series
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
Strategies for finding sequences.
- Adding Arithmetic Sequences [07/10/1998]
How do you add the numbers from 1 to 5000 without actually ... | <urn:uuid:63a82a0f-0053-44f2-bc7c-2f070a650f26> | 3.484375 | 1,866 | Q&A Forum | Science & Tech. | 86.677548 | 1,987 |
July 17, 2012
Sea ice extent in June since 1979. Graph courtesy of NOAA.
Worldwide, temperatures were 0.63 degrees Celsius (1.13 degrees Fahrenheit) above the average temperature of the 20th Century. In the Northern Hemisphere—where much of Russia and North America sweltered under heatwaves—the temperature was 1.3 degr... | <urn:uuid:8bef5cc8-07c4-4ea9-8ee7-a0fdf992094a> | 3.53125 | 229 | News Article | Science & Tech. | 60.698069 | 1,988 |
WASHINGTON, D.C.--The Opportunity rover has found strong evidence that eons ago water flowed across Mars, pooled on the surface, and then returned to the atmosphere, leaving behind a thick layer of minerals leached from the land. "We've found our ancient water on Mars," says rover science team member Harry McSween of t... | <urn:uuid:3778b983-fc58-4e01-8c12-3a9e91bf6a06> | 3.71875 | 538 | News Article | Science & Tech. | 49.049968 | 1,989 |
Even for the lucky few creatures that are preserved in the fossil record, soft tissues such as skin and feathers typically disappear over time. But a newly developed technique has found a way to bring them back to life in some cases. Researchers have now used the approach to resurrect the teeth and recognize the carcas... | <urn:uuid:a6de1d41-a1d3-4d41-85bc-bf3da2402612> | 3.890625 | 881 | News Article | Science & Tech. | 31.796675 | 1,990 |
Several oil slicks occurred on Lake Maracaibo in northwestern Venezuela between December 2002 and January 2003, and were observed by various satellite instruments. These images from the Multi-angle Imaging SpectroRadiometer (MISR) provide new information relating to one such event near the center of Lake Maracaibo on D... | <urn:uuid:2e9cc51d-c5e6-4e53-83c3-01dbbdcf5254> | 3.34375 | 568 | Knowledge Article | Science & Tech. | 33.261518 | 1,991 |
The public and scientists have helped create the first 150,000 species pages in the Encyclopedia of Life (EOL), the global online project to create a page for each of the 1.8 million known species on the planet.
It may be less than one tenth of the way there, but the response of people who have uploaded more than 30,00... | <urn:uuid:139eca28-c244-4ae0-94ec-7844eca4df50> | 3.609375 | 614 | News Article | Science & Tech. | 41.110667 | 1,992 |
This is a case of an unwisely chosen simile taken waaaay too far. This idea, that the entire universe could be inside the event horizon of not a supermassive, but rather a superduperultrahypermegastupendouslymassive black hole, is usually introduced in introductory classes about general relativity. The instructor in th... | <urn:uuid:25ce42b8-4cc2-4cf1-9891-c2a28713ea4b> | 2.53125 | 941 | Q&A Forum | Science & Tech. | 35.906256 | 1,993 |
|Spend the time||outdoors|
All you need is a camera or a camera trap so that you can photograph African mammals. The quality of the photographs needs to be good enough to allow us to identify the animal in the image.
A handheld GPS device is useful, but not essential as we have a link to Google Maps on our website that... | <urn:uuid:7c83764a-53a6-45af-88ad-b5b6c2ba98de> | 2.90625 | 645 | About (Org.) | Science & Tech. | 3.665611 | 1,994 |
A reentrant lock is one where a process can claim the lock multiple times without blocking on itself. It's useful in situations where it's not easy to keep track of whether you've already grabbed a lock. If a lock is non re-entrant you could grab the lock, then block when you go to grab it again, effectively deadlockin... | <urn:uuid:c78af1d7-ca10-4975-a938-d2dea12b4a6b> | 3.0625 | 622 | Q&A Forum | Software Dev. | 50.108782 | 1,995 |
Editors: Rainer Beck, Heinz Hilbrecht, Klaus Reinsch and Peter Völker
Hardcover: 546 pages
This book is not so much about the Sun, but about the opportunities for amateur astronomers to observe the Sun. Compared with other areas of astronomy solar observing has a number of advantages:
• Observation can be carried out d... | <urn:uuid:d470a64c-439a-425d-8ff0-cd5f2c188cbb> | 2.921875 | 526 | Product Page | Science & Tech. | 38.598518 | 1,996 |
Characters of Permutation Representations
Let’s take to be a permutation representation coming from a group action on a finite set that we’ll also call . It’s straightforward to calculate the character of this representation.
Indeed, the standard basis that comes from the elements of gives us a nice matrix representati... | <urn:uuid:9ac5eacd-bf7d-47ac-8347-1bfd2b5cef0c> | 2.875 | 296 | Knowledge Article | Science & Tech. | 49.679185 | 1,997 |
Coastal & Marine Geology InfoBank
Our Mapping Systems
The USGS and Science Education
USGS Fact Sheets
ground penetrating radar
Comment: 11:53 - 13:06 (01:13)
Source: Annenberg/CPB Resources - Earth Revealed - 4. The Sea Floor
Keywords: subduction, "Grand Canyon", vessel, instrument, "camel-grab", "box corer", "James Sa... | <urn:uuid:42b1e945-abcd-4ae4-9b84-8465df6d50b2> | 4.03125 | 343 | Knowledge Article | Science & Tech. | 37.567739 | 1,998 |
PARIS – Scientists have made an incredible discovery on an asteroid that may prove a highly debated theory!
An asteroid has provided evidence of water ice, as well as organic compounds which bolster a leading theory for the origins of life on Earth. Scientists made their findings by studying 24 Themis, an asteroid abou... | <urn:uuid:77e6c6a4-77b6-45ae-b865-e56d51d812bc> | 3.859375 | 314 | News Article | Science & Tech. | 36.603342 | 1,999 |