Slashdot Mirror

schwit1 writes: In 2010 Spectrum reported a new approach for creating chip-scale supercapacitors on silicon wafers, proposed by researchers at Drexel University in Philadelphia and the Universite Paul Sabatier in Toulouse, France. In an article published in Science, the researchers described how to make supercapacitor electrodes from porous carbon that could stick to the surface of silicon wafers so that they could be micromachined into electrodes for on-chip supercapacitors. Now the same team has finally succeeded in doing just that. In a paper published in this week's Science, researchers from the two initial teams report creating efficient porous carbon electrodes that really stick to the surface of a silicon wafer. They made layers of porous carbide derived carbon (CDC) that are completely compatible with all treatments used in the semiconductor industry, says Patrice Simon, a researcher at Universite Paul Sabatier who has researched porous CDC electrodes over the last ten years and co-authored both the 2010 and this week's paper in Science.

itwbennett writes Researchers from Drexel University, the University of Maryland, the University of Goettingen, and Princeton have developed a "code stylometry" that uses natural language processing and machine learning to determine the authors of source code based on coding style. To test how well their code stylometry works, the researchers gathered publicly available data from Google's Code Jam, an annual programming competition that attracts a wide range of programmers, from students to professionals to hobbyists. Looking at data from 250 coders over multiple years, averaging 630 lines of code per author their code stylometry achieved 95% accuracy in identifying the author of anonymous code (PDF). Using a dataset with fewer programmers (30) but more lines of code per person (1,900), the identification accuracy rate reached 97%.

mbstone writes "Arvind Narayana writes: What if authors can be identified based on nothing but a comparison of the content they publish to other web content they have previously authored? Naryanan has a new paper to be presented at the 33rd IEEE Symposium on Security & Privacy. Just as individual telegraphers could be identified by other telegraphers from their 'fists,' Naryanan posits that an author's habitual choices of words, such as, for example, the frequency with which the author uses 'since' as opposed to 'because,' can be processed through an algorithm to identify the author's writing. Fortunately, and for now, manually altering one's writing style is effective as a countermeasure." In this exploration the algorithm's first choice was correct 20% of the time, with the poster being in the top 20 guesses 35% of the time. Not amazing, but: "We find that we can improve precision from 20% to over 80% with only a halving of recall. In plain English, what these numbers mean is: the algorithm does not always attempt to identify an author, but when it does, it finds the right author 80% of the time. Overall, it identifies 10% (half of 20%) of authors correctly, i.e., 10,000 out of the 100,000 authors in our dataset. Strong as these numbers are, it is important to keep in mind that in a real-life deanonymization attack on a specific target, it is likely that confidence can be greatly improved through methods discussed above — topic, manual inspection, etc."

MadUndergrad writes "Dr. Jonathan Spanier from Drexel University has come up with a novel way to greatly increase data storage density: water. Specifically, they propose using hydroxyl ions to stabilize minute ferroelectric wires. These wires could be many times smaller than what is possible today, enabling data densities in the neighborhood of 12-13 PB per cubic centimeter. While there are still many problems to be resolved before drives using these can be manufactured this technology does seem promising. For one thing, it would be non-volatile, but could apparently be made to act as RAM. The fact that this is coming out of a university gives me hope that this technology won't turn out to be just so much vapor."

Fallen Kell writes "From the anouncement, "Polk Audio LCi-IP Ultra High Performance In-Wall/ In-Ceiling Loudspeakers are the world's first active Internet Protocol-ready Loudspeakers. They were created for IP networked systems such as the ground-breaking NetStreams DigiLinx system but also provide vast convenience and performance benefits when used in analog systems. Integrated digital amplifiers eliminate remote amplifiers connected via hundreds of feet of lossy, performance-robbing speaker wires." I had the great pleasure of having a demo on September 16th, 2005 of these speakers. The ability of connect to a wired network for sending the audio stream is simply amazing and wonderful innovation in the audio world."

prostoalex writes "Silicon Sam's Technology Resource is a collection of detailed guides on repairing pretty much anything that has an electronic component in it: household appliances, audio equipment, AC adapters, CD players, CD-ROM drives, other optical drives, microwave ovens, PC monitors, TV sets, VCRs, remote controls, strobe lights, small engines, lawn mowers, printers and photocopiers. Each guide is not just a collection of FAQ, but a detailed document the size of your average book."

nazgul000 writes "You thought those green laser pointers sold by ThinkGeek and others were pretty cool, didn't you? Well, think again." It seems obligatory to point out that even laser pointers, and certainly anything more powerful than those, are capable of causing real damage.

LnxAddct writes "An article on CNet reports that Macromedia will start taking Linux more seriously. It will start this new initiative by making it's suite of tools run easily under WINE, then depending on the response it gets, it will port it's tools natively to Linux! Their Chief Software Architect, Kevin Lynch, stated, 'What we've been investigating is, When will it be time to bring our tools to Linux? I think it might be happening now.' Maybe 2004 will be the year of Linux."

ADrexelStudent asks: "A debate has been brought up in recent months at my school, Drexel University, on the issue of whether the school should be allowed to own over 300 domain names. One domain, drexel.com, has been purchased from the students that owned the site, which was being used as a student forum. Another site, drexel.org, is under contest from the school against it's owner, a student. The university claims they didn't know the owner was a student and hence filed a lawsuit claiming trademark violation. Problem is the school doesn't own the trademark, a furniture company with no relation to Drexel does. Out of all the 300+ domains, only one outside the .edu TLD is being used, drexel.com, prompting the argument that this is an attempt by the university to silence student opinion on the Internet. My question for slashdot is how many schools out there purchase domains with no intent to use them, should student tuition be used in this manner, and what is your opinion of this practice?"

ADrexelStudent asks: "A debate has been brought up in recent months at my school, Drexel University, on the issue of whether the school should be allowed to own over 300 domain names. One domain, drexel.com, has been purchased from the students that owned the site, which was being used as a student forum. Another site, drexel.org, is under contest from the school against it's owner, a student. The university claims they didn't know the owner was a student and hence filed a lawsuit claiming trademark violation. Problem is the school doesn't own the trademark, a furniture company with no relation to Drexel does. Out of all the 300+ domains, only one outside the .edu TLD is being used, drexel.com, prompting the argument that this is an attempt by the university to silence student opinion on the Internet. My question for slashdot is how many schools out there purchase domains with no intent to use them, should student tuition be used in this manner, and what is your opinion of this practice?"

manicmailman asks: "I have recently (and probably somewhat rashly) volunteered to help teach computers at a local inner city school's summer camp program. I am really excited about this endeavor, but I have absolutely no experience. I was wondering if anyone else had experience teaching computers to elementary school students, particularly inner city ones. I'll probably only be there for 4 to 6 hours a week for about 8 weeks. The principal has given me almost total freedom with the computer class, so I am looking for suggestions about where to start and what to cover." Children from all walks of life deserve an education, and like it or not, computers are becomming as much a part of our lives as reading, writing and math. What lessons are kids ready to accept about computers at this stage, and how does one keep them interested?

jyak writes "Over at the Daily Radar, there is an interview with the game legend, Brian Reynolds, about his new company, Big Huge Games. Apparently, Firaxis is now hiring, if anyone is interested." He hangs out with Sid Meier. That gives him near-heroic status in my book.

wunderhorn1 writes "Trey Parker and Matt Stone, creators of South Park, have agreed to do "39 short cartoons" for Macromedia, Inc.'s Shockwave.com. According the the New York Times article, Parker and Stone will "receive equity of less than 10 percent in Shockwave.com," which will apparently be run as a subsidiary of Macromedia. "