The emerging field of magnonics is attracting researchers because of its possible role in the development of transistorless logic circuits, and researchers are investigating how to use spin wave phenomena to make logic circuits. Unlike CMOS logic circuits, which use electric current to store and transfer data, magnonic logic circuits use spin waves propagating in magnetic waveguides. By avoiding electric currents, magnonic logic circuits have the potential to enable more efficient data transfer and enhanced logic functionality, including parallel data processing. Magnonic logic circuits can encode a bit of information through either the amplitude or the phase of the spin wave. Although the amplitude-encoding approach has benefits, including low power consumption due to the low energy of the spin wave signal, the phase-encoding approach is more promising, according to University of California, Los Angeles (UCLA) researchers. “The greatest potential advantage of magnonic logic circuits is the ability to process information in parallel on different frequencies, which is not possible for CMOS-based logic,” says UCLA researcher Alexander Khitun.
View Full Article

For More Information Visit: http://www.cpccci.com

U.S. President Barack Obama today will sign a memorandum that makes 500 megahertz of wireless spectrum, currently controlled by the federal government and private companies, available for auction. The memorandum is part of an administration effort to nearly double the wireless communications spectrum available for commercial use over the next 10 years. Most of the spectrum would be designated for commercial use in mobile broadband and similar applications, and proceeds from the auction would help finance better communications systems for public safety agencies. About 45 percent of the spectrum to be auctioned will come from federal agencies that will be asked to give up allocations that they are not using or could share. The remaining spectrum will come from unused spectrum already scheduled for auction or from broadcasters who would be offered incentives to relinquish part of their airwaves. “The administration’s strong actions on wireless broadband will move us significantly toward sustainable economic success, robust investment, and global leadership in innovation,” says Federal Communications Commission chairman Julius Genachowski.
View Full Article

For More Information Visit: http://www.cpccci.com

Carlos III University of Madrid (UC3M) researchers working on the eMadrid project are studying how to use three-dimensional (3D) virtual worlds for teaching. Three-dimensional virtual worlds must include teaching elements such as a training program, with a sequence of activities for students to acquire knowledge, as well as a methodology to evaluate previously defined learning results, to become a learning platform, says UC3M professor Carlos Delgado Kloos. “The 3D learning environments are not only appropriate for transmission of knowledge, but also for teaching competencies, and if they also include augmented reality elements for the manipulation of a three-dimensional world with real physical elements, even better results are obtained, as the barrier of a fictional world immersion is reduced,” Kloos says. The eMadrid project is working to achieve these standards by collaborating with researchers from other universities, including Autonoma, Complutense, Politecnica, Rey Juan Carlos, and the National Distance Education University of Spain. The researchers are developing defined standards and best practices for implementing teaching environments in 3D virtual platforms.
View Full Article

For More Information Visit: http://www.cpccci.com