http://www.sciencedaily.com/news/computers_math/wifi/ Wireless News. Read all about WiFi research from leading research institutes around the world. Full-text, images, free. en-us Sun, 27 Jul 2008 00:05:01 EDT Sun, 27 Jul 2008 00:05:01 EDT 60 http://www.sciencedaily.com/images/logosmall.gif http://www.sciencedaily.com/news/computers_math/wifi/ For more science articles, visit ScienceDaily. http://www.sciencedaily.com/releases/2008/07/080718080755.htm Video games — often regarded as nothing more than mindless entertainment for lethargic kids and teens — are proving to be an effective, new tool to motivate patients to perform rehabilitation exercises. The Burn Center is also employing a special add-on to the Nintendo Wii system, Guitar Hero III. Mon, 21 Jul 2008 14:00:00 EDT http://www.sciencedaily.com/releases/2008/07/080718080755.htm http://www.sciencedaily.com/releases/2008/06/080619133111.htm The rapid convergence of social networks, mobile phones and global positioning technology has given engineers the ability to create something they call "virtual sticky notes," site-specific messages that people can leave for others to pick up on their mobile phones. Sat, 21 Jun 2008 20:00:00 EDT http://www.sciencedaily.com/releases/2008/06/080619133111.htm http://www.sciencedaily.com/releases/2008/06/080606134607.htm The same Global Positioning System (GPS) technology used to track vehicles is now being used to track cows. But animal scientists have taken tracking several steps further with a Walkman-like headset that enables him to "whisper" wireless commands to cows to control their movements across a landscape --- and even remotely gather them into a corral. Sat, 07 Jun 2008 14:00:00 EDT http://www.sciencedaily.com/releases/2008/06/080606134607.htm http://www.sciencedaily.com/releases/2008/05/080520214357.htm A major drawback of the latest generation video products and applications has been the complex requirements for coding and decoding signals. An alternative put forward by European researchers turns the traditional video coding paradigm on its head. Thu, 22 May 2008 02:00:00 EDT http://www.sciencedaily.com/releases/2008/05/080520214357.htm http://www.sciencedaily.com/releases/2008/05/080516164822.htm Researchers have confirmed that underground tunnels -- generally a difficult setting for radios -- can have a frequency "sweet spot" at which signals may travel several times farther than at other frequencies. The finding may point to strategies for enhancing rescue communications in subways and mines. Tue, 20 May 2008 17:00:00 EDT http://www.sciencedaily.com/releases/2008/05/080516164822.htm http://www.sciencedaily.com/releases/2008/04/080414145659.htm Apple iPhone and iPod (touch) support a new self-localization feature that uses known locations of wireless access points as well as the device's own ability to detect access points. Now researchers have demonstrated that positions displayed by the devices using this system can be falsified, making the use of this self-localization system unsuitable in a number of security- and safety-critical applications. Wed, 16 Apr 2008 05:00:00 EDT http://www.sciencedaily.com/releases/2008/04/080414145659.htm http://www.sciencedaily.com/releases/2008/03/080312103805.htm With the aid of multiple antenna technology, researchers have succeeded in quadrupling the existing transmission rate of conventional networks from 54 megabytes per second (Mbps) to 216 Mbps. According to the communication theory, only a limited amount of data can be transmitted within a given bandwidth for wireless communication. Mon, 17 Mar 2008 05:00:00 EDT http://www.sciencedaily.com/releases/2008/03/080312103805.htm http://www.sciencedaily.com/releases/2008/03/080311200326.htm From traffic lights to mobile phones, small computers are all around us. Enabling these 'embedded systems' to create wireless communications networks automatically will have profound effects in areas from emergency management to healthcare and traffic control. Networks of mobile sensors and other small electronic devices have huge potential. Applications include emergency management, security, helping vulnerable people to live independently, traffic control, warehouse management, and environmental monitoring. Fri, 14 Mar 2008 20:00:00 EDT http://www.sciencedaily.com/releases/2008/03/080311200326.htm http://www.sciencedaily.com/releases/2008/03/080304193035.htm Thick instruction manuals, a confusing tangle of cables and endless different standards -- trying to connect your flat screen, DVD recorder, MP3 player, surround system and computer to one another and get them to work is rather a complicated task. Help is on its way in the form of a project called WiMAC(at)home (Wireless Media and Control at Home). In this project, which is being financed by the German Federal Ministry of Economics and Technology (BMWi), researchers are working on the wireless connection of electronic devices for broadcasting and entertainment in home networks. Thu, 06 Mar 2008 23:00:00 EST http://www.sciencedaily.com/releases/2008/03/080304193035.htm http://www.sciencedaily.com/releases/2008/02/080208095559.htm Human-computer interaction has not improved enormously since Mark Twain's time, when the typewriter was invented. A European research task force hopes to change that by making human-computer interaction, well, 'similar' to the way humans do it. Mark Twain famously invested, and then lost, a fortune on the first typewriter, in 1874. Since then, human-computer interaction has moved beyond basic key-entry (here, the mouse is the most pervasive development), but the keyboard's legacy lives on. We are still using Qwerty, a layout designed to slow down the typist's speed, because the mechanical keys would jam together if pressed in rapid succession. Sun, 10 Feb 2008 20:00:00 EST http://www.sciencedaily.com/releases/2008/02/080208095559.htm http://www.sciencedaily.com/releases/2008/01/080121130202.htm European researchers took the concepts of Web 2.0, like user-generated content and social networking, into the real world. They hope to create user-generated physical networks so internets could be set up, by anyone, anytime. It's radical and, surprisingly, fairly realistic. Welcome to Web 3.0. The internet, Web 1.0, is so incredibly powerful that even now, almost 20 years later, we have only begun to explore its potential. Web 2.0, with its YouTube, Facebook, Flickr and blogs galore is even younger and shows even more potential. Tue, 22 Jan 2008 14:00:00 EST http://www.sciencedaily.com/releases/2008/01/080121130202.htm http://www.sciencedaily.com/releases/2008/01/080112080851.htm Think how many lives could be saved if emergency services were alerted the moment a pedestrian is run over. Think how much more fun snowboarding could be if you could emote your feelings electronically to ski-buddies. Breakthroughs in capturing and transmitting ambient intelligence could make these scenarios a reality. The My Space/Facebook phenomenon has shown how we love to share personal information. But will we take the next step and share our feelings and emotions across the ether? Whether it is sensors on our skin, in our clothing or embedded in the environment, research into ambient intelligence is advancing in leaps and bounds. We could soon be using technology in a whole new, human-centric way. Wed, 16 Jan 2008 23:00:00 EST http://www.sciencedaily.com/releases/2008/01/080112080851.htm http://www.sciencedaily.com/releases/2008/01/080107121923.htm New technology that protects Internet advertisers from "click fraud" -- falsely driving up hits to ads on Web pages. The extra clicks drive up costs for pay-per-click advertising. Tue, 08 Jan 2008 17:00:00 EST http://www.sciencedaily.com/releases/2008/01/080107121923.htm http://www.sciencedaily.com/releases/2007/12/071221180421.htm The Wireless World Initiative has developed prototype user-centered systems that will potentially enable millions of people to make the most of third-generation (3G) and beyond mobile technology to work, relax and play any time, anywhere. ICT Results reports back from WWI's crowning event. It is Monday morning in the not-too-distant future and two neighbors, Bob the builder and Bob the businessman, are getting ready for work. The builder has to drive to a job in a nearby town and the businessman needs to take the train to the office. They switch on their televisions and request information on road and rail conditions. Wed, 26 Dec 2007 20:00:00 EST http://www.sciencedaily.com/releases/2007/12/071221180421.htm http://www.sciencedaily.com/releases/2007/12/071218192013.htm Bypassing decades-old conventions in making computer chips, engineers developed a novel way to replace silicon with carbon on large surfaces, clearing the way for new generations of faster, more powerful cell phones, computers and other electronics. The new practical technique shows great promise with the carbon material called graphene. Thu, 20 Dec 2007 11:00:00 EST http://www.sciencedaily.com/releases/2007/12/071218192013.htm http://www.sciencedaily.com/releases/2007/09/070907104822.htm Residents of Italy's capital will glimpse the future of urban mapmaking with the launch of "Wiki City Rome," a project developed at the Massachusetts Institute of Technology that uses data from cellphones and other wireless technology to illustrate the city's pulse in real time. The project will debut Sept. 8 during Rome's "Notte Bianca" or white night, an all-night festival of events across the capital city. During that night, anyone with an Internet connection will be able to see a unique map of the Italian capital that shows the movements of crowds, event locations, the whereabouts of well-known Roman personalities, and the real-time position of city buses and trains. Mon, 17 Sep 2007 23:00:00 EDT http://www.sciencedaily.com/releases/2007/09/070907104822.htm http://www.sciencedaily.com/releases/2007/09/070910152630.htm The development of fast and accurate computer algorithms for the automated recognition, identification, classification and tracking of targets of interest is underway. It is expected to have many applications such as chemical agent monitoring, weather and hurricanes tracking and monitoring and explosive detection at the battlefield. The project also aims to develop unmanned air vehicle sensor nodes and a wireless sensor network test bed for the Air Force. Tue, 11 Sep 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/09/070910152630.htm http://www.sciencedaily.com/releases/2007/09/070904175347.htm UCSD computer scientists have designed a system that automatically analyzes the behavior of all the WiFi connections in the UCSD computer science building. "In the end, we can say 'it's because of this that your wireless is slow or has stopped working' -- and we can tell you immediately," said one of the computer science professors working on the research. Fri, 07 Sep 2007 02:00:00 EDT http://www.sciencedaily.com/releases/2007/09/070904175347.htm http://www.sciencedaily.com/releases/2007/08/070824185539.htm College students do it. Coffee shop customers do it too. Your neighbor in Apartment 3C is probably doing it right now. Many computer users search for an available wireless network to tap into--whether at the mall, at school or at home--and whether they have permission to use that network or not. Knowingly or unknowingly, these wireless "parasites" may be doing more than filching a signal. When they connect, they can open up the network--and all the computers on it--to an array of security breaches. Mon, 27 Aug 2007 17:00:00 EDT http://www.sciencedaily.com/releases/2007/08/070824185539.htm http://www.sciencedaily.com/releases/2007/08/070807135635.htm A new study suggests that wireless capsule endoscopy is a useful and safe technique to study small bowel health in children. While the technology has become widely used in adult treatment, this is the first study to examine its use in pediatrics. Wed, 08 Aug 2007 23:00:00 EDT http://www.sciencedaily.com/releases/2007/08/070807135635.htm http://www.sciencedaily.com/releases/2007/07/070719100232.htm New research could soon make that tangle of wires under desks and in data centers a thing of the past. Scientists are investigating the use of extremely high radio frequencies (RF) to achieve broad bandwidth and high data transmission rates over short distances. Thu, 19 Jul 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/07/070719100232.htm http://www.sciencedaily.com/releases/2007/07/070706114357.htm A generator that is ten times more powerful than any other similar devices has just been developed. It is a kinetic energy generator which generates electrical energy from the vibrations and movements present within its environment. Tue, 10 Jul 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/07/070706114357.htm http://www.sciencedaily.com/releases/2007/05/070521115913.htm To some, the ability to track the movements of family members using cell phones equates to a violation of privacy. Others -- particularly parents, who already are tapping the new technology to keep tabs on their kids -- view it as a convenient way to ensure their children's safety in an increasingly ominous world. Regardless of who's right or wrong, one thing is certain: In the not-too-distant future, Location Based Services, or LBS, will become as ubiquitous as cell phones are today. Mon, 21 May 2007 23:00:00 EDT http://www.sciencedaily.com/releases/2007/05/070521115913.htm http://www.sciencedaily.com/releases/2007/05/070517094217.htm Imagine paramedics mobilizing a team of cardiologists and nurses within minutes of arriving at the home of a person who is having a heart attack, simply by pressing a button that sends an electrocardiogram over a wireless network. That's what's being done at a Newark, N.J., medical center, and it's dramatically improving the quality of care, according to a new study. Sat, 19 May 2007 08:00:00 EDT http://www.sciencedaily.com/releases/2007/05/070517094217.htm http://www.sciencedaily.com/releases/2007/04/070412132140.htm IBM has announced a breakthrough chip-stacking technology in a manufacturing environment that paves the way for three-dimensional chips that will extend Moore's Law beyond its expected limits. The technology -- called "through-silicon vias" -- allows different chip components to be packaged much closer together for faster, smaller, and lower-power systems. Thu, 12 Apr 2007 20:00:00 EDT http://www.sciencedaily.com/releases/2007/04/070412132140.htm http://www.sciencedaily.com/releases/2007/03/070319180004.htm A new communication protocol for wireless sensor networks just released by the University of Southern California Information Sciences Institute is the most efficient yet, with more than a tenfold improvement on previous versions. Wed, 21 Mar 2007 05:00:00 EDT http://www.sciencedaily.com/releases/2007/03/070319180004.htm http://www.sciencedaily.com/releases/2007/03/070314153135.htm The Internet is enough of a marvel that most people would never ask, ''Is this really how we would build it if we could design it all today?'' But asking that very question is the job of a broad-based team of Stanford researchers. Taking a nothing-is-sacred approach to better meet human communications needs, this month they are launching a new program called the Clean Slate Design for the Internet. Fri, 16 Mar 2007 14:00:00 EDT http://www.sciencedaily.com/releases/2007/03/070314153135.htm http://www.sciencedaily.com/releases/2007/03/070302110944.htm Researchers at NIST report that the radio transmissions of multiple search and rescue robots can interfere with each other and degrade performance. Sat, 03 Mar 2007 08:00:00 EST http://www.sciencedaily.com/releases/2007/03/070302110944.htm http://www.sciencedaily.com/releases/2007/02/070212113300.htm Agent 007 is a mighty versatile fellow, but he would have to take backseat to agents being trained at Washington University in St. Louis. Computer scientist engineers here are using wireless sensor networks that employ software agents that so far have been able to navigate a robot safely through a simulated fire and spot a simulated fire by seeking out heat. Once the agent locates the fire, it clones itself -- try that, James Bond. Wed, 14 Feb 2007 11:00:00 EST http://www.sciencedaily.com/releases/2007/02/070212113300.htm http://www.sciencedaily.com/releases/2007/01/070131204017.htm An easy-to-use in home monitoring device for patients is changing the way doctors monitor the health of patients with implanted defibrillators. Rush University Medical Center is participating in a pilot study of the Latitude Patient Management system to determine if the wireless home monitoring system can decrease hospitalizations for heart failure. Thu, 01 Feb 2007 14:00:00 EST http://www.sciencedaily.com/releases/2007/01/070131204017.htm http://www.sciencedaily.com/releases/2007/01/070131205751.htm Can network interference be used to expand and enhance communication for wireless devices such as cell phones, computers and personal digital assistants? Daniela Tuninetti, assistant professor of electrical and computer engineering, explained that this seemingly illogical concept is not all that strange if you take a closer look at what is going on. Thu, 01 Feb 2007 11:00:00 EST http://www.sciencedaily.com/releases/2007/01/070131205751.htm http://www.sciencedaily.com/releases/2007/01/070126101430.htm Can tiny and ubiquitous devices like Personal Digital Assistants (PDAs) be of use for space applications? The answer is a definite yes. Recent tests have demonstrated current and future uses for PDAs on board the International Space Station. Tue, 30 Jan 2007 08:00:00 EST http://www.sciencedaily.com/releases/2007/01/070126101430.htm http://www.sciencedaily.com/releases/2006/11/061114190638.htm Recharging your laptop computer, your cell phone and a variety of other gadgets may one day be as convenient as surfing the web -- wirelessly. Marin Soljacic, an assistant professor in MIT's Department of Physics and Research Laboratory of Electronics, described his and his MIT colleagues' research on that wireless future on Tuesday, Nov. 14 at the American Institute of Physics Industrial Physics Forum in San Francisco. Tue, 14 Nov 2006 17:00:00 EST http://www.sciencedaily.com/releases/2006/11/061114190638.htm http://www.sciencedaily.com/releases/2006/09/060912214943.htm The next time you're sipping a latte and surfing the Net at your favorite neighborhood wireless café, someone just a few seats away could be breaking into your laptop and causing irreparable damage to your computer's operating system by secretly tapping into your network card's unique device driver, researchers at Sandia National Laboratories in have concluded. Wed, 13 Sep 2006 05:00:00 EDT http://www.sciencedaily.com/releases/2006/09/060912214943.htm http://www.sciencedaily.com/releases/2006/07/060731113650.htm Early Sunday morning, July 23, an abandoned campfire in Cleveland National Forest erupted into a 7,000-acre wildfire that continues to spread. Now known as the Horse Fire, it threatens more than 1,500 homes and 100 commercial properties near San Diego, Calif. Mon, 31 Jul 2006 05:00:00 EDT http://www.sciencedaily.com/releases/2006/07/060731113650.htm http://www.sciencedaily.com/releases/2006/07/060717103934.htm A three-year project led by the University of York, which aims to revolutionise broadband communications, reaches its climax later this year. Mon, 17 Jul 2006 08:00:00 EDT http://www.sciencedaily.com/releases/2006/07/060717103934.htm http://www.sciencedaily.com/releases/2006/06/060627233942.htm Researchers at the National Institute of Standards and Technology (NIST) and industry collaborators have developed improved methods for accurately measuring very faint thermal noise in electronic circuits. The technique may help improve the signal range, data rate, and battery life of cell phones and other wireless communications devices. Tue, 27 Jun 2006 11:00:00 EDT http://www.sciencedaily.com/releases/2006/06/060627233942.htm http://www.sciencedaily.com/releases/2006/06/060623095150.htm Magnetic fields created using nanotechnology could make computers up to 500 times more powerful if new research is successful. Fri, 23 Jun 2006 02:00:00 EDT http://www.sciencedaily.com/releases/2006/06/060623095150.htm http://www.sciencedaily.com/releases/2006/04/060428095341.htm Computer scientists at the University of Illinois at Urbana-Champaign have developed software that enables the sharing of high-speed wireless connections without compromising security or privacy. The software can improve Internet connectivity in residential areas at no additional cost. Fri, 28 Apr 2006 02:00:00 EDT http://www.sciencedaily.com/releases/2006/04/060428095341.htm http://www.sciencedaily.com/releases/2006/04/060420020229.htm Anyone who uses a cell phone or a WiFi laptop knows the irritation of a dead-battery surprise. But now researchers at the University of Rochester have broken a barrier in wireless chip design that uses a tenth as much battery power as current designs and, better yet, will use much less in emerging wireless devices of the future. Thu, 20 Apr 2006 05:00:00 EDT http://www.sciencedaily.com/releases/2006/04/060420020229.htm http://www.sciencedaily.com/releases/2006/04/060406231700.htm Data-transmission rates are key, says Yunfeng Zhang, a Lehigh University structural engineer, if wireless sensors are to replace costlier wired sensor networks. Zhang is developing data-compression techniques in hopes of transmitting data in real time using wireless sensor networks. He is also using data-mining techniques to extract key information more efficiently from data. Fri, 07 Apr 2006 02:00:00 EDT http://www.sciencedaily.com/releases/2006/04/060406231700.htm http://www.sciencedaily.com/releases/2006/03/060327215618.htm Wireless sensor networks consisting of multiple objects, each capable of simple sensing, actuation, communication and processing have tremendous potential. To better realise their full capabilities researchers are developing a broad vision of innovative future applications. Tue, 28 Mar 2006 02:00:00 EST http://www.sciencedaily.com/releases/2006/03/060327215618.htm http://www.sciencedaily.com/releases/2006/03/060320214310.htm When emergency medical technicians (EMTs) wirelessly transmit eletrocardiograms (ECG) directly to a cardiologist's hand-held device, heart attack patients can potentially receive direct clot removal in half the usual time, according to cardiologists at Duke University Medical Center and NorthEast Medical Center, Concord, N.C. Tue, 21 Mar 2006 02:00:00 EST http://www.sciencedaily.com/releases/2006/03/060320214310.htm http://www.sciencedaily.com/releases/2006/03/060316180152.htm Telecommunications researchers have demonstrated a novel communications network design that would provide both ultra-high-speed wireless and wired access services from the same signals carried on a single optical fiber. Fri, 17 Mar 2006 05:00:00 EST http://www.sciencedaily.com/releases/2006/03/060316180152.htm http://www.sciencedaily.com/releases/2006/02/060226114808.htm From cell manipulation to micro assembly, micro robots devised by an international team of researchers offer a glimpse of the future. Sun, 26 Feb 2006 05:00:00 EST http://www.sciencedaily.com/releases/2006/02/060226114808.htm http://www.sciencedaily.com/releases/2006/01/060112041102.htm Penn State engineers have shown that a white-LED system for lighting and high data-rate indoor wireless communications, coupled with broadband over either medium- or low-voltage power line grids (BPL), can offer transmission capacities that exceed DSL or cable and are more secure than RF. Thu, 12 Jan 2006 05:00:00 EST http://www.sciencedaily.com/releases/2006/01/060112041102.htm http://www.sciencedaily.com/releases/2005/12/051215084036.htm Detecting leaks and conducting maintenance in America’s aging network of natural gas pipelines will eventually be a job for wireless robots, according to researchers at the University of Missouri-Rolla. Thu, 15 Dec 2005 05:00:00 EST http://www.sciencedaily.com/releases/2005/12/051215084036.htm http://www.sciencedaily.com/releases/2005/08/050805192848.htm The broadband boom is creating an ever-increasing demand for more capacity and higher rates of data transfer on both fixed-line and wireless networks. Helping to meet that demand, without the need to lay costly new infrastructure, is the LABELS project. Sun, 07 Aug 2005 02:00:00 EDT http://www.sciencedaily.com/releases/2005/08/050805192848.htm