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In the paper, Dhiman and his colleagues describe a common yet poorly known type of fraud -- so-called Liar Buyer fraud -- and they go on to explain why traditional anti-fraud technology has failed to curb this type of fraud, which typically involves a purchase gone bad. Typically the consumer places an order and receives the merchandise, then reports it as not delivered, and asks for a refund. The researchers introduced a counter-intuitive technique in which the claims processor unveils knowledge of detailed iniformation about the purchase, and new experiments showed the new technique based on user-interface modification to address liar buyers has the potentialto dramatically reduce losses from fraud. Using a combination of role playing and questionnaires, they determined the opinions and behaviors of about 1,700 subjects, and found that their proposed technique results in a statistically-significant reduction in fraud rates in an experimental setting. The results are so promising for both men and women that the researchers hope to expand the study to real e-commerce traffic, when the researchers could also test whether men are more willing to lie and defraud than are women. While research has previously confirmed that discrepancy, Dhiman and his colleagues say that results using their new counter-intuitive technique so far show men being about as honest as women. 
In a recent article about how "3D stacking offers an extension for Moore's Law," Engineering & Technology Magazine suggests that a move to 3D integrated circuits could offer the closest thing to Moore's Law by reducing the average wire length, and therefore energy. But a computer scientist at UC San Diego cautions in the same article that heat produced by that energy could be a potential major problem. Transistors produce copious amounts of heat when they switch, resulting in big increases in heat production when running at high frequencies. "If you look at graphs of long-term growth in transistor performance," said CSE Prof. Michael Taylor, "you would think we would be able to operate them at 15GHz by now." Instead, even the processors in large servers do not run at more than 3GHz. Added Taylor: "Transistors have this inherent capability but we can't use it because the transistors can't use it becaause they have to stay within a power envelope." The article continues that the "situation has reached the point where, to be able to remove enough heat from the chip to stop individual transistors from cooking themselves to death, a large fraction of the overall device needs to be doing nothing."
At the 2015 Jacobs School of Engineering ResearchExpo, the breakout session will showcase the latest and soon-to-be-announced Research Centers. While there are CSE faculty involved in other centers, only one such center -- the Center for Visual Computing (CVC) -- will be represented by a senior faculty member, Professor Ravi Ramamoorthi, from the Computer Science and Engineering department. Ramamoorthi will speak about "Visual Computing: Grand Opportunities" at 3:30pm - 4:00pm on April 16 in the Price Center Forum on the 4th floor. Other faculty talks will focus on wearable sensors, extreme events engineering, as well as sustainable power and energy.
In his talk, CSE's Ramamoorthi says "visual computing at the interface of computer vision and computer graphics is undergoing a major transformation that impacts our daily lives." He points to key challenges that remain, notably how to create visual effects in real time and "integrating them with mobile augmented reality systems to extends human perception with mobile augmented realiity. Another major trend is the coming of age for computer vision, where tasks like scene comprehension and gesture recognitionwewew are now becoming commonplace on mobile devices." Prof. Ramamoorthi will talk about the forthcoming Center for Visual Computing, which will be charged with developing the fundamental technologies needed to take full advantage of new opportunities to display and experience visual content.
The TED Talks website has posted a much-awaited presentation by UC San Diego professor of pediatrics as well as computer science, Rob Knight. Actually, it was recorded at TED 2014 nearly a year ago, when Knight was still a Howard Hughes Medical Institute Early Career Scientist at the University of Colorado Boulder. Knight made the switch to UC San Diego early this year, and the TED organization finally lifted the free-viewing curtain on the video of his March appearance at TED 2014 in Vancouver.
In his original TED presentation, now available for free on the TED website and via TED apps or iTunes, Knight is described as a "microbial ecologist", which, while true, is an understatement of his impressive credentials. After earning his Ph.D. from Princeton, he became an expert in the human microbiome, mgicrobial community ecology and what he now calls "multi-omics". In joining UC San Diego's Biomedical Sciences (BMS) Graduate Program in the focus areas of bioinformatics and glycobiology, Knight simultaneously agreed to spend part of his time working closely with the team of bioinformatics faculty in the Computer Science and Engineering department.
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