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Engineers at Stevens Institute of Technology have developed a technique to optically modulate the frequency of a laser beam and create a signal that is disrupted significantly less by environmental factors, says Dr. Rainer Martini. The research provides for enhanced optical communications, allowing mobile units not tied to fiber optic cable to communicate in the range of 100 GHz and beyond, the equivalent of 100 gigabytes of data per second. Eventually, the team hopes to extend the reach into the terahertz spectrum. The frequency or amplitude modulation of middle infrared quantum cascade lasers has been limited by electronics, which are barely capable of accepting frequencies of up to 10 GHz by switching a signal on and off.  Marini and his team have developed a method to optically induce fast amplitude modulation in a quantum cascade laser to control the laser's intensity. Their amplitude modulation system employed a second laser to modulate the amplitude of the middle infrared laser, using light to control light. The current detector is only capable of detecting frequencies up to 10 GHz, but Dr. Martini is confident that a new detector will make the system capable of much higher frequencies. With an optical system that is stable enough, satellites may one day convert to laser technology, resulting in a more mobile military and super-sensitive scanners, as well as faster Internet for the masses, says Martini. Ref.: "Optically induced fast wavelength modulation in a quantum cascade laser," Applied Physics Letters, July 7, 2010.

Scientists mimic essence of plants' energy storage system - and it's an extremely simple and affordable technology

Imagine, Michael Chorost proposes, that four police officers on a drug raid are connected mentally in a way that allows them to sense what their colleagues are seeing and feeling. Tony Vittorio, the captain, is in the center room of the three-room drug den. He can sense that his partner Wilson, in the room on his left, is not feeling danger or arousal and thus has encountered no one. But suddenly Vittorio feels a distant thump on his chest. Sarsen, in the room on the right, has been hit with something, possibly a bullet fired from a gun with a silencer. Vittorio glimpses a flickering image of a metallic barrel pointed at Sarsen, who is projecting overwhelming shock and alarm. By deducing how far Sarsen might have gone into the room and where the gunman is likely to be standing, Vittorio fires shots into the wall that will, at the very least, distract the gunman and allow Sarsen to shoot back. Sarsen is saved; the gunman is dead. That scene, from his new book, "World Wide Mind," is an example of what Mr. Chorost sees as "the coming integration of humanity, machines, and the Internet." The prediction is conceptually feasible, he tells us, something that technology does not yet permit but that breaks no known physical laws.

Instead of practicing for hours, a device can now teach you a tune by taking control of your hand (see video above). The system, developed by the University of Tokyo and Sony Computer Science Laboratories, is appropriately named PossessedHand and electrically stimulates muscles in your arm that move your fingers. Tests have shown that the device can help you learn the correct fingering faster but many find the concept unsettling. Would you be willing to have your hand hacked to learn an instrument?

ScienceDaily (July 5, 2011) - Future computers may rely on magnetic microprocessors that consume the least amount of energy allowed by the laws of physics, according to an analysis by University of California, Berkeley, electrical engineers.

Burgeoning cyberchatter about 'Occupy Wall Street' is creating an evolving database of raw information about the leaderless protest movement, a potential tool for those seeking to anticipate its next steps.

An open-source Internet platform to crowdsource peer-review on information everywhere.

Are you starting for your career as a data scientist? To become an expert in data science you need to begin from the ground up. And you need to get a step-by-step guide to becoming a data scientist and for learning a particular skill. Instead of jumping for a master program in computer science you need to focus mathematics, python,r-programming or statistics or develop a skill in data science. If you are looking out for such a learning institute then you could also take a walk for edwisor.com as it works for enrolled students in data science career program as well as in the hiring process and gets 4 Guaranteed interviews at top organizations.

A Close Protection personnel is a security operative or an agent who works closely with a person or persons to protect them, usually a public figure, wealthy, or politically important figure(s) from danger: generally, physical attack, harassment, loss of private information, bullying, or other criminal offences.

We are a plastic surgical practice specializing in cosmetic and restorative procedures. Our priority is to provide superior care to our patients while maintaining an empathetic understanding of the individual needs of each. From the first visit to our office, throughout scheduled surgery and during ongoing medical care, we strive to make your experience a positive one where your dignity and confidentiality are maintained.

Nettraveler is a cyber-threat to the computers. It is an infection with high risk and capability to collapse the entire system, within no time. The intruder interferes into the system, steals significant and sensitive information, and reports this information to its users. It usually skins with frequently used applications or Windows processes to hide from security shields.

You may have applied many tweaks to customize your Windows 7, or resolve major issues in it. And by now, you may have been considering yourself an effectual player of this operating system

You may encounter this error code, when you try to download from the Windows phone store or restore a backup on your phone. It just prompts you with an alert stating "There is a problem completing your request. Try again later. "

In order to improve the Windows 8, Microsoft decided to remove the F8 key option to access advanced startup options that are considered best for troubleshooting system in case an issue arises. There was no easy way to access safe mode than F8 key but, it is not present in Windows 8.

Registry Defrag is a complete website about windows registry. As registry plays an important role in the overall performance of the system, therefore here productive tweaks about registry are described.