http://www.sciencedaily.com/news/computers_math/computer_science/ Computer Science. Read all the latest developments in the computer sciences including articles on new software, hardware and systems. en-us Wed, 25 Nov 2009 08:05:01 EST Wed, 25 Nov 2009 08:05:01 EST 60 http://www.sciencedaily.com/images/logosmall.gif http://www.sciencedaily.com/news/computers_math/computer_science/ For more science articles, visit ScienceDaily. http://www.sciencedaily.com/releases/2009/11/091122095424.htm A new application for the Android smartphone shows users and software developers how much power their applications are consuming. Tue, 24 Nov 2009 23:00:00 EST http://www.sciencedaily.com/releases/2009/11/091122095424.htm http://www.sciencedaily.com/releases/2009/11/091124181415.htm Technology designed to blast aliens in computer games is part of a new GPU (graphics processing units) computer cluster that will process research data thousands of times faster and more efficiently than a desktop PC. Tue, 24 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091124181415.htm http://www.sciencedaily.com/releases/2009/11/091124180617.htm Researchers have developed a unique new computer model called the Virtual StreamLab, designed to help restore real streams to a healthier state. The Virtual StreamLab demonstrates the physics of natural water flows at an unprecedented level of detail and realism. Tue, 24 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091124180617.htm http://www.sciencedaily.com/releases/2009/11/091124103613.htm Up to now, extreme production temperatures made it impossible to equip metallic components with RFID chips during the operating process. Researchers present a variation on a process that makes the non-destructive integration of radio chips a reality. Tue, 24 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091124103613.htm http://www.sciencedaily.com/releases/2009/11/091124082755.htm A team of researchers has developed a way to simulate blood flow on the computer to optimize surgical designs. It is the basis of a new tool that may help surgeons plan for a life-saving operation called the "Fontan" surgery, which is performed on babies born with severe congenital heart defects. Tue, 24 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091124082755.htm http://www.sciencedaily.com/releases/2009/11/091123094122.htm Scientists have used an innovative computer program to produce a more detailed global map of Mars' valley networks. It shows the networks are much more extensive than had been previously depicted. Regions that are most densely dissected by the valley networks roughly form a belt around the planet, consistent with a past climate scenario that included precipitation and the presence of an ocean covering a large portion of Mars' northern hemisphere. Mon, 23 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091123094122.htm http://www.sciencedaily.com/releases/2009/11/091117161131.htm With a bit of leverage, researchers have used a very tiny beam of light with as little as 1 milliwatt of power to move a silicon structure up to 12 nanometers. That's enough to completely switch the optical properties of the structure from opaque to transparent. Mon, 23 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091117161131.htm http://www.sciencedaily.com/releases/2009/11/091120095005.htm Physicists have made an important advance in electrically controlling quantum states of electrons, a step that could help in the development of quantum computing. Mon, 23 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120095005.htm http://www.sciencedaily.com/releases/2009/11/091119101046.htm Like the paperless office, the smart home has been a long time coming, but a new article suggests that radio tags coupled with mobile communications devices could soon provide seamless multimedia services to the home. Thu, 19 Nov 2009 23:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119101046.htm http://www.sciencedaily.com/releases/2009/11/091118160627.htm Engineering researchers have developed a unique and robust method to prevent cloning of passive radio frequency identification tags. The technology, based on one or more unique physical attributes of individual tags rather than information stored on them, will prevent the production of counterfeit tags and thus greatly enhance both security and privacy for government agencies, businesses and consumers. Thu, 19 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091118160627.htm http://www.sciencedaily.com/releases/2009/11/091118101403.htm New research points the way to a technology that might make it possible to harvest much of the wasted heat produced by everything from computer processor chips to car engines to electric power plants, and turn it into usable electricity. Thu, 19 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091118101403.htm http://www.sciencedaily.com/releases/2009/11/091120000635.htm Current methods of searching audiovisual content can be a hit-and-miss affair. Manually tagging online media content is time consuming, and costly. But new ‘query by example’ methods, built on peer-to-peer (P2P) architectures, could provide the way forward for such data-intensive content searches, say European researchers. Thu, 19 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091120000635.htm http://www.sciencedaily.com/releases/2009/11/091119121306.htm A new statistical technique allows scientists to scan a genome for specific gene-regulatory regions without requiring prior knowledge of the relevant transcription factors. The technique has been experimentally validated in both the mouse genome and the fruit fly genome. Thu, 19 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091119121306.htm http://www.sciencedaily.com/releases/2009/11/091118133535.htm IBM has announced significant progress toward creating a computer system that simulates and emulates the brain's abilities for sensation, perception, action, interaction and cognition, while rivaling the brain's low power and energy consumption and compact size. Scientists have performed the first near real-time cortical simulation of the brain that exceeds the scale of a cat cortex and contains 1 billion spiking neurons and 10 trillion individual learning synapses. Wed, 18 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091118133535.htm http://www.sciencedaily.com/releases/2009/11/091117094935.htm The sensor of some optical mice can be used to easily and cheaply detect counterfeit euros, according to a study published by researchers in Spain. Almost 80 percent of counterfeit coins discovered in Europe in 2008 were two-euro coins. Tue, 17 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091117094935.htm http://www.sciencedaily.com/releases/2009/11/091116143619.htm It's the year 2060, and 75 percent of drivers in the Greater Los Angeles area have hydrogen fuel cell vehicles that emit only water vapor. Look into Shane Stephens-Romero's crystal ball -- a computer model called STREET -- and find that air quality has significantly improved. Greenhouse gas emissions are more than 60 percent lower than in 2009, and levels of microscopic soot and ozone are about 15 percent and 10 percent lower, respectively. Tue, 17 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091116143619.htm http://www.sciencedaily.com/releases/2009/11/091116114530.htm New methods of studying avian influenza strains and visually mapping their movement around the world will help scientists more quickly learn the behavior of the pandemic H1N1 flu virus, Ohio State University researchers say. The researchers linked many powerful computer systems together to analyze enormous amounts of genetic data collected from all publicly available isolated strains of the H5N1 virus -- the cause of avian flu. Tue, 17 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091116114530.htm http://www.sciencedaily.com/releases/2009/11/091116204229.htm An upgrade to a Cray XT5 high-performance computing system deployed by the Department of Energy has made the "Jaguar" supercomputer the world's fastest. Located at Oak Ridge National Laboratory, Jaguar is the scientific research community's most powerful computational tool for exploring solutions to some of today's most difficult problems. The upgrade, funded with $19.9 million under the Recovery Act, will enable scientific simulations for exploring solutions to climate change and the development of new energy technologies. Tue, 17 Nov 2009 08:00:00 EST http://www.sciencedaily.com/releases/2009/11/091116204229.htm http://www.sciencedaily.com/releases/2009/11/091116094457.htm East Tennessee is now home to two of the world's three fastest computers, according to new rankings. The Top 500 list of the world's fastest supercomputers places University of Tennessee supercomputer Kraken in third place, where it also holds the title of world's fastest academic supercomputer, while Oak Ridge National Laboratory's Jaguar computer took first place overall. Tue, 17 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/11/091116094457.htm http://www.sciencedaily.com/releases/2009/11/091115134128.htm Physicists have demonstrated the first "universal" programmable quantum information processor able to run any program allowed by quantum mechanics -- the rules governing the submicroscopic world -- using two quantum bits (qubits) of information. The processor could be a module in a future quantum computer, which theoretically could solve some important problems that are intractable today. Mon, 16 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091115134128.htm http://www.sciencedaily.com/releases/2009/11/091111120759.htm Researchers have created the first integrated semantic search platform that integrates text, video and audio. The system can 'watch' films, 'listen' to audio and 'read' text to find relevant responses to semantic search terms. At last, computers are able to look for meaning in our multimedia searches. Mon, 16 Nov 2009 05:00:00 EST http://www.sciencedaily.com/releases/2009/11/091111120759.htm http://www.sciencedaily.com/releases/2009/11/091111120105.htm Researchers in Egypt have developed a technique to compress DNA sequences of the kind used in medical research so that they take up a lot less space in a computer database but without loss of information. Sun, 15 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091111120105.htm http://www.sciencedaily.com/releases/2009/11/091110171746.htm Researchers are making progress in developing a new type of transistor that uses a finlike structure instead of the conventional flat design, possibly enabling engineers to create faster and more compact circuits and computer chips. Wed, 11 Nov 2009 14:00:00 EST http://www.sciencedaily.com/releases/2009/11/091110171746.htm http://www.sciencedaily.com/releases/2009/10/091029141249.htm Computer scientists are using Android, the open-source mobile operating system championed by Google, to transform a cell phone into a flexible data-collection tool. Their free suite of tools, named Open Data Kit, is already used by organizations around the world that need inexpensive ways to gather information in areas with little infrastructure. Wed, 11 Nov 2009 02:00:00 EST http://www.sciencedaily.com/releases/2009/10/091029141249.htm http://www.sciencedaily.com/releases/2009/11/091111210626.htm Electronic devices can't work well unless all of the transistors, or switches, within them allow electrical current to flow easily when they are turned on. Engineers have now determined why some transistors made of organic crystals don't perform well, yielding ideas about how to make them work better. Wed, 11 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091111210626.htm http://www.sciencedaily.com/releases/2009/11/091110105355.htm College age students text the most, preferring it to calls or e-mail. However, new research is suggesting that the copious amounts of texting could lead to overuse injuries -- once only reserved for older adults who have spent years in front of a computer. Tue, 10 Nov 2009 23:00:00 EST http://www.sciencedaily.com/releases/2009/11/091110105355.htm http://www.sciencedaily.com/releases/2009/11/091106102700.htm An international team of scientists has shown how the chemistry of surface reactions underpinning catalysis can be modeled accurately with computers. Mon, 09 Nov 2009 20:00:00 EST http://www.sciencedaily.com/releases/2009/11/091106102700.htm http://www.sciencedaily.com/releases/2009/11/091109121203.htm If you forget your password when logging into an e-mail or online shopping website, the site will likely ask you a security question: What is your mother's maiden name? Where were you born? The trouble is that such questions are not very secure. But computer scientists are testing a new tactic that could be both easier and more secure. Mon, 09 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091109121203.htm http://www.sciencedaily.com/releases/2009/10/091029151439.htm Researchers have succeeded in getting hold of the environment of a quantum particle. This allows them to exercise greater control over a single electron, and brings the team of researchers a step closer still to the super-fast quantum computer. Mon, 09 Nov 2009 08:00:00 EST http://www.sciencedaily.com/releases/2009/10/091029151439.htm http://www.sciencedaily.com/releases/2009/11/091106102658.htm Researchers in Spain have designed a system for the mobility of military troops within a battlefield following the mechanisms used by ant colonies to move. The scientists have used settings of Panzer General, a commercial war video game, for the development of this software. Sat, 07 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091106102658.htm http://www.sciencedaily.com/releases/2009/11/091105121209.htm A computer scientist has new evidence regarding a photograph of accused JFK assassin Lee Harvey Oswald. He digitally analyzed the iconic image of Oswald pictured in a backyard setting holding a rifle in one hand and Marxist newspapers in the other, and he says the photo almost certainly was not altered. Fri, 06 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091105121209.htm http://www.sciencedaily.com/releases/2009/11/091105102729.htm A team of researchers in Spain has developed a protocol to distort the user profile generated by Internet search engines, in such a way that they cannot save the searches undertaken by Internet users and thus preserve their privacy. Fri, 06 Nov 2009 08:00:00 EST http://www.sciencedaily.com/releases/2009/11/091105102729.htm http://www.sciencedaily.com/releases/2009/11/091104101628.htm The eyes may be the mirror to the soul, but the iris reveals a person's true identity. A new report demonstrates that iris recognition algorithms can maintain their accuracy even with compact images, affirming their potential for large-scale identity management applications. Thu, 05 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091104101628.htm http://www.sciencedaily.com/releases/2009/11/091111120803.htm Sharing small snippets of information about your daily life is a key feature of the online social networking revolution. Soon status updates and other social information could be generated automatically. Thu, 05 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091111120803.htm http://www.sciencedaily.com/releases/2009/11/091103112247.htm When searching for basketball videos online, a long list of Web sites appears, which may contain a picture or a word describing a basketball. But what if the computer could search inside videos for a basketball? Researchers are developing software that would enable computers to search inside videos, detect humans and specific objects, and perform other video analysis tasks. Wed, 04 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/11/091103112247.htm http://www.sciencedaily.com/releases/2009/11/091103102246.htm The spread of malware, or computer viruses, is a growing problem that can lead to crashed computer systems, stolen personal information, and billions of dollars in lost productivity every year. One of the most insidious types of malware is a "rootkit," which can effectively hide the presence of other spyware or viruses from the user. But now researchers have devised a way to block rootkits and prevent them from taking over your computer systems. Tue, 03 Nov 2009 17:00:00 EST http://www.sciencedaily.com/releases/2009/11/091103102246.htm http://www.sciencedaily.com/releases/2009/11/091102171611.htm Shoppers could see lower prices but less variety to choose from as more manufacturers sell directly to consumers through the Internet, according to new research. Mon, 02 Nov 2009 00:00:00 EST http://www.sciencedaily.com/releases/2009/11/091102171611.htm http://www.sciencedaily.com/releases/2009/10/091031003511.htm What are the odds that your digital identity will be stolen by cyber criminals? Why do bank payment systems crash when everybody is trying to pay for Christmas gifts by credit card? Cyber criminals are everywhere. Now, help is just a click away. Researchers have developed a new, ultrafast digital signature scheme that is 17,000 times faster than current systems for verification, and 10,000 times faster in providing a digital signature. Sun, 01 Nov 2009 11:00:00 EST http://www.sciencedaily.com/releases/2009/10/091031003511.htm http://www.sciencedaily.com/releases/2009/10/091028113948.htm Scientists are using an adapted version of VPIC, a particle-in-cell plasma physics code, to model the nonlinear physics of laser backscatter energy transfer and plasma instabilities in an attempt to reach fusion ignition. Sat, 31 Oct 2009 05:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091028113948.htm http://www.sciencedaily.com/releases/2009/10/091027162001.htm Scientists have always attempted to develop spin transistors by incorporating local ferromagnets into device architectures. A far better and practical way to manipulate the orientation of an electron's spin would be by using purely electrical means. Researchers have now found an innovative and novel way to control an electron's spin orientation using purely electrical means. Fri, 30 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091027162001.htm http://www.sciencedaily.com/releases/2009/10/091029120858.htm Does your laptop sometimes get so hot that it can almost be used to fry eggs? New technology may help cool it and give information technology a unique twist. Fri, 30 Oct 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091029120858.htm http://www.sciencedaily.com/releases/2009/09/090928095447.htm Service-centric software engineering is the latest paradigm in computing, and researchers have developed a platform they believe will launch the concept into the business world. Wed, 28 Oct 2009 23:00:00 EDT http://www.sciencedaily.com/releases/2009/09/090928095447.htm http://www.sciencedaily.com/releases/2009/10/091027161536.htm In a new study the evolutionary history of more than 10,000 sequences from more than 400 HIV-infected individuals was compared. The idea is to identify common features of the transmitted virus, and attempt to create a vaccine that enables recognition the original transmitted virus before the body's immune response causes the virus to react and mutate. Wed, 28 Oct 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091027161536.htm http://www.sciencedaily.com/releases/2009/10/091027161539.htm Smokers who crushed computer-simulated cigarettes as part of a psychosocial treatment program in a virtual reality environment had significantly reduced nicotine dependence and higher rates of tobacco abstinence than smokers participating in the same program who grasped a computer-simulated ball, according to a new study. Wed, 28 Oct 2009 11:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091027161539.htm http://www.sciencedaily.com/releases/2009/10/091026152942.htm A new "Roadrunner Universe" model requires a petascale computer because, like the universe, it's mind-bendingly large. The model's basic unit is a particle with a mass of approximately one billion suns (in order to sample galaxies with masses of about a trillion suns), and it includes 64 billion and more of those particles. The model is one of the largest simulations of the distribution of matter in the universe, and aims to look at galaxy-scale mass concentrations above and beyond quantities seen in state-of-the-art sky surveys. Tue, 27 Oct 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091026152942.htm http://www.sciencedaily.com/releases/2009/10/091026125535.htm The world's fastest supercomputer, Roadrunner, at Los Alamos National Laboratory has completed its initial "shakedown" phase doing accelerated petascale computer modeling and simulations of a variety of unclassified, fundamental science projects. Mon, 26 Oct 2009 20:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091026125535.htm http://www.sciencedaily.com/releases/2009/10/091026133016.htm A robot is currently building a looping brick wall right in the middle of New York City. Over a period of three weeks, passers-by can watch the "Pike Loop" installation in the making on a traffic island. Mon, 26 Oct 2009 17:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091026133016.htm http://www.sciencedaily.com/releases/2009/10/091016224157.htm Researchers have demonstrated some of the first commercially viable plasmonic devices, paving the way for a new era of high-speed communications and computing in which electronic and optical signals can be handled simultaneously. Mon, 26 Oct 2009 14:00:00 EDT http://www.sciencedaily.com/releases/2009/10/091016224157.htm