Day: November 15, 2011
Galaxy — an open-source, web-based platform for data-intensive biomedical and genetic research — is now available as a “cloud computing” resource.
A team of researchers including Anton Nekrutenko, an associate professor of biochemistry and molecular biology at Penn State University; Kateryna Makova, an associate professor of biology at Penn State; and James Taylor from Emory University, developed the new technology, which will help scientists and biomedical researchers to harness such tools as DNA-sequencing and analysis software, as well as storage capacity for large quantities of scientific data. Details of the development will be published as a letter in the journal Nature Biotechnology. Earlier papers by Nekrutenko and co-authors describing the technology and its uses are published in the journals Genome Research and Genome Biology.MORE
Electrical engineers in Bochum have succeeded in developing a new concept for ultrafast semiconductor lasers. The researchers make clever use of the intrinsic angular momentum of electrons, called spin, to successfully break the previous speed barriers. The new spin lasers have the potential to achieve modulation frequencies of well above 100 GHz in future. This is a decisive step towards high-speed data transmission, e.g. for the Internet of tomorrow.
The researchers report on their results in the journal Applied Physics Letters, published by the American Institute of Physics.
Optical data transmission: the basis of our information society
Optical data transmission by semiconductor lasers is a basic prerequisite for the globally networked world and today’s information society. The ever increasing degree of networking and the desire to exchange larger amounts of data are the driving force behind the development of ever faster optical data transmission systems. The maximum speed of conventional semiconductor lasers has long been a limiting factor – typical modulation frequencies are currently at levels well below 50 GHz. Read the rest of this entry »
A Twitter post from an undergraduate student at Santa Clara University has prompted the school to acknowledge that it asked the FBI to investigate how a few dozen grades were electronically altered.
Mark Loiseau, 25, a senior electrical engineering student, received an unpleasant surprise this morning: three FBI agents showed up at his off-campus apartment wanting to have a friendly chat with him.
FBI agent Jeffrey Miller and his colleagues had complete dossiers on him and his friends, Loiseau told CNET this afternoon. “They had all my grades. They had pictures of me.”
It started out as a friendly conversation, Loiseau said, but then the FBI agents began to suggest that he was involved in illegally changing his or someone else’s grades. After receiving a denial, the trio of agents said that lying to a federal agent was a crime and that they wanted to search his computers.MORE
Efforts to shift the internet to a new addressing system have been boosted by US internet service provider Comcast.
The firm has begun switching some customers over to a system built around the net’s new addressing scheme, called IP Version 6 (IPv6).
The change is needed because the older version has almost exhausted its pool of available addresses.
Some small UK ISPs have also begun putting domestic customers on a network that uses the new system.
Comcast is carrying out a trial in Pleasanton, California that willsee some customers in the town being connected to a network built around IPv6. To do this they will need home hardware that can handle IPv6 and its forerunner- IPv4.
Everything connected to the internet needs an address so data is sent to the right place. From the earliest days of the net, addresses have been pulled from the IPv4 pool which has about four billion numbers available.MORE
The Steam video game service, used by 35 million people, has been compromised by hackers.
Its owner and operator, Valve, uncovered an intrusion into a user database while investigating a security breach of its discussion forums.
The attackers used login details from the forum hack to access a database that held ID and credit card data.
Valve said that, so far, it had no evidence that credit cards were being misused or Steam accounts abused. Read the rest of this entry »