Waikato University researchers have developed working prototypes of a supercapacitor that could enable mobile phones and laptop computers to run longer between charges. The supercapacitors are designed to absorb the waste energy from linear power supplies and reuse it. Waikato engineer Nihal Kularatna says the researchers continue to address the issue of limiting the electrical interference generated by linear power supplies. Today’s electrical equipment operates at lower voltages, and linear power supplies are capable of delivering high quality power at low efficiency. Supercapacitors have a sizable internal surface area and electrical storage capacity, and are able to absorb and discharge electricity very rapidly. The efficiency of a low dropout regulator circuit has been improved from 42 percent to more than 80 percent, Kularatna says.
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The augmentation of the coupling between light and matter in quantum systems by disorder could eventually lead to fast quantum computers that are easy to construct, according to a study from researchers at the Technical University of Denmark. They have demonstrated that randomly arranged materials can capture light just as well as ordered ones. The researchers built a waveguide featuring holes that were randomly drilled into a gallium arsenide crystal, and also incorporated quantum dots as a substitute for atoms that could become entangled with photons. The quantum dots were induced to emit photons by hitting them with a laser, and the researchers discovered that 94 percent of the photons stayed close to their emitters, creating spots of trapped light in the crystal. The quantum dots also emitted photons 15 times faster after a light spot formed around them. If these light corrals can be entangled with each other, the system could one day support a quantum network in a randomly organized crystal.
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As robot technology advances, and their use puts them in closer contact with humans, safety has become a top priority for some researchers. “Safe interaction needs a lot more than speech and language processing on the part of the robot,” says Bristol Robotics Laboratory’s Chris Melhuish. Bristol researchers are developing facial interaction technology that will make it clearer what a human can expect from a robot. Meanwhile, the pan-European iCub open source humanoid robot project, led by the Italian Institute of Technology’s (ITT’s) Giorgio Metta, is developing robot skin that can measure contact pressure. The most dangerous part of a humanoid robot is the legs, says ITT engineer Darwin Caldwell, who is working to make robot legs with less impact energy by using joints with lightweight brushless motor drives, contact sensors, and spring-loaded limbs. “By introducing compliance we could have robots that interact safely for humans and ensure robots don’t break themselves,” Caldwell says.
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The U.S. Federal Communications Commission (FCC) proposes to offer a 10-year plan to implement broadband Internet as the reigning communications network in the United States. FCC officials say the commission’s recommendations will include a subsidy for Internet providers to wire rural U.S. regions currently without access, a voluntary auction of some broadcast spectrum to open up space for wireless devices, and the development of a new universal set-top box that links to the Internet and cable service. The FCC says the proceeds from the spectrum auctions alone should pay for the plan. About one-third of U.S. residents either lack broadband Internet access, cannot afford it, or opt not to have it. In a February address, FCC chairman Julius Genachowski said that broadband wiring would be of immeasurable help to the U.S.’s construction of cutting-edge computers and applications, otherwise “it would be like having the technology for great electric cars, but terrible roads.” Another part of the plan calls for outfitting 100 million households with high-speed Internet with a maximum speed of 100 Mbps by the end of this decade.
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ACM has named University of California, Berkeley computer science professor Eric Brewer the recipient of the 2009 ACM-Infosys Foundation Award for his contribution to the development of highly scalable Internet services. Brewer broke down jobs, which once required large and expensive servers systems, so they could be handled by many inexpensive, small machines. Brewer also developed a way to replicate computing chores so that if one server went down, another would provide the answer without users noticing an interruption. He also developed Brewer’s wireless hypothesis, which suggests providing communications and computing capabilities to developing nations is more helpful than waiting for more conventional components of their economies to take shape. Instead of using Wi-Fi technology to cover a small area, Brewer developed technology called WiLDNet that can send signals in a single direction over long distances at a very low cost. Applications of WiLDNet include helping to remotely diagnose eye ailments by using wireless videoconferencing. “He demonstrated not only could you help people but you could advance the state of the art,” says Berkeley computer science professor David Patterson. The award, which is sponsored by the Infosys Foundation, includes a $150,000 prize.
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University of Arkansas researchers have developed a new method for preventing the cloning of passive radio frequency identification (RFID) tags. The method prevents the production of counterfeit tags by focusing on one or more unique physical attributes of individual tags, instead of the information stored on the tags. “It is easy to clone an RFID tag by copying the contents of its memory and applying them to a new, counterfeit tag, which can then be attached to a counterfeit product–or person, in the case of these new e-passports,” says Arkansas professor Dale R. Thompson. “What we’ve developed is an electronic fingerprinting system to prevent this from happening.” The researchers determined that all RFID tags have a unique fingerprint due to variances in radio frequency and manufacturing. By using an algorithm that repeatedly sent reader-to-tag signals, the researchers found that radio frequencies in RFID tags ranged from 903 MHz to 927 MHz, and increased in increments of 2.4 megahertz. The measurements showed that each tag had a unique minimum power response at multiple radio frequencies, and that power responses were significantly different even in same-model tags. Thompson says the different minimal responses are just one of several unique physical characteristics that enabled them to create an electronic fingerprint to identify tags with a high probability of detecting counterfeit tags.

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Recent advancements in supercomputer design coupled with falling prices are breaking down the barriers that have traditionally surrounded computing-intensive research, which could give ordinary users with a novel idea the opportunity to explore its potential using powerful computers. Ninety percent of the world’s 500 fastest computers use standard microprocessors, which enable supercomputers to be built much more inexpensively. “I think this says that supercomputing technology is affordable,” says Advanced Micro Devices director Margaret Lewis. “We are kind of getting away from this ivory tower.” This possibility has inspired some of the world’s top computing experts to make valuable sources of information available, with the goal of filling supercomputers with scientific data and allowing anyone in the world with a PC to access these systems. “It’s a good call to arms,” says Silicon Graphics’ Mark Barrenechea. “The technology is there. The need is there. This could exponentially increase the amount of science done across the globe.” Sharing data and supercomputing resources could allow labs to accomplish far more than was previously possible. Argonne Leadership Computing Facility director Pete Beckman says shifting science research into the cloud democratizes science. Argonne, with funding from the U.S. Department of Energy, is working on Magellan, a project to explore the creation of a cloud-computing infrastructure that scientists around the world could use. Beckman says such a system would reduce the need for smaller universities and labs to spend money on their own computing infrastructure.

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The World Wide Web Consortium has published File API, an interface draft that Web browsers can use to better manipulate files and is part of a larger effort to provide a better foundation for interactive applications. File API defines ways browsers and Web sites can improve how they handle files, including selecting multiple files for upload, such as on photo-sharing sites or Web-based email. Other improvements govern the use of “blobs,” or packages of raw binary data such as video files. Google has supported blobs for its Gears browser plug-in as a way to separate large videos into smaller pieces so uploads can be more easily resumed if a network problem interrupts the process. A major benefit is that files are handled asynchronously, meaning the browser will not freeze while a file is being uploaded or managed, and the browser reports back on the progress of file transfers. The interface is compatible with several standards, including the drag-and-drop support in HTML5, currently in development, and the Web Workers technology that improves the way browsers perform numerous operations simultaneously. The interface also can help Web applications process and understand the contents of files. For example, the interface could allow for Web applications that automatically search through a music playlist and find the lyrics to the songs on that playlist.

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Germany’s Fraunhofer-Gesellschaft has partnered with Singapore’s Nanyang Technological University (NTU) to establish the first interactive digital media research institute in Asia. Fraunhofer Singapore, which will be located at NTU, will focus on promoting applied research and commercial opportunities for areas such as computer graphics, computer vision, virtual reality, and augmented reality. Researchers will work directly with Fraunhofer’s Institute for Computer Graphics Research on new technologies, as well as with industry partners. NTU, Fraunhofer, and Singapore funding agencies will provide Fraunhofer Singapore with about $10 million over five years. NTU and Fraunhofer hope to have the institute up and running in the first half of 2010 with 20 scientists and researchers, and have a staff of about 50 international researchers within the next two to three years. “That they have chosen NTU as their research partner in the area of computer graphics, interactive digital media, virtual reality, and augmented reality, speaks volumes for NTU’s research and innovation culture and the strength of our engineers and scientists at NTU,” says NTU president Su Guaning. “We are delighted to partner with one of the most highly regarded computer graphics powerhouses of Europe.”

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The U.S. Bureau of Labor Statistics (BLS) reports that few students are enrolling in computer science courses, particularly women and minorities. The BLS ranks computer application software engineering as the fourth most in-demand occupation in its Occupational Handbook for 2006-2016, largely because of the growing number of applications for emerging technologies and the increasing complexity of businesses. However, the National Science Foundation’s (NSF’s) Jan Cuny says there has been a major drop-off in the number of computer scientists entering the workforce since 2000. Since 2000, 70 percent fewer students have majored in computer science, with 80 percent fewer women entering the field, according to Computing Research Association data. Cuny says the Higher Education Research Institute reports that only 1 percent of students are majoring in computer science, and just 0.3 percent are women. University of North Carolina (UNC) at Greensboro professor Anthony Chow says that over the past eight years there has been a slight increase in women’s enrollment in computer science at the undergraduate level, but on the graduate level minority enrollment plunges to extremely small percentages. Retaining minority employees is another major problem, with nearly half of all minorities leaving technology jobs to enter other occupations, according to the National Association for the Advancement of Colored People. Isolation is a major factor in the drop-out rates for women and minorities, says Teresa Dahlberg, director of the Diversity in Information Technology Institute at UNC Charlotte. She also says that women are often judged more harshly than men. Cuny says NSF is focusing on information education programs intended to spark student interest in computing by demonstrating how computers can solve programs through creativity, and also is working to infuse computer science into middle school and high school curricula.

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