News

File Sharing

Computer scientists at Carnegie Mellon (Pittsburgh, PA) have developed a method of speeding up the transfer of large data files over the Internet by configuring peer-to-peer (P2P) file-sharing services to share not only identical files, but also similar files. By identifying relevant chunks of files similar to a desired file, the Similarity-Enhanced Transfer (SET) increases the number of potential sources for downloads. Boosting the number of sources usually translates into faster P2P transfers. Once the download of a data file is initiated, the source file is divided into smaller, unique chunks. Different chunks are downloaded simultaneously from numerous sources that have the identical file, and then the chunks are reassembled into a single file. While downloading is underway, SET continues to search for similar files. For more information, click here.

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Current Attractions

The ScanWorks(R) hand-held 3D laser scanner from Perceptron (Plymouth, MI) was named Photonics Tech Briefs Product of the Month for April. The instrument features a scanning rate of up to 458,000 points per second and can maintain a dense point resolution of approximately 14 microns. The device projects the sensor's field of view onto the target scanning area to visualize the best scanning strategy, and may be used on dark or highly reflective surfaces. The scanning software includes a MS Windows XP-style interface, intelligent sensor calibration, real-time point shading, and automatic exposure control. For more information, see page 12a of the April issue of PTB or click here.

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NASA Tech Briefs Free Webinars

Virtual Testing at the CAD Stage with Simulation Software June 6, 2007, 2:00 PM In order to successfully compete in the global marketplace, your product design process needs to be the best in its class, delivering innovative products of the highest quality, at the lowest cost, with the shortest possible design cycle time. Sponsored by Noran Engineering, Inc., NASA Tech Briefs presents a FREE Webinar that examines how progressive engineering departments are accomplishing this by using analysis software at the CAD design stage to virtually test parts and validate structural, thermal, and dynamic performance before they make the first article. Benefits of PXI Express for Next-Generation Testing June 20, 2007, 2:00 PM Learn the capabilities, benefits, and features of PXI Express as a platform for next- generation test systems and instrumentation during this FREE NASA Tech Briefs Webinar sponsored by Geotest, Marvin Test Systems, Inc. Based on PCI Express and CompactPCI technology, PXI Express offers significant performance and bandwidth improvements when compared to current PXI systems, while preserving compatibility with over 1,200 existing PXI products. This flexibility means that PXI Express products will provide engineers with the bandwidth and performance required by tomorrow's applications, while maintaining compatibility and interoperability with today's PXI products and applications. To register for these FREE Webinars, click here.

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Technology Business Brief

New CNT Array Adhesion Tape and the Opportunity to Collaborate Company is seeking industry support for further testing and development of its carbon nanotube (CNT) adhesive. Developed in conjunction with the National Science Foundation, NASA, and the University of California-Berkeley, this company is looking for industry investment to support tests on the adhesion strength and mechanical stability of its nano adhesive. The time frame for testing is July 1st to December 31st of 2007. The company hopes to be able to deliver both single-side and double-side adhesion tape by the end of year. Limited single-side adhesive tape samples are available on both solid and flexible films. Interested corporations can leverage their investment with government matching funds. For more information on this technology, click here. The Technology Business Briefs portray licensing or selling opportunities intermediated by NextTechs. NextTechs Technologies, LLC is a Global Technology Investment Bank engaged in technology offers and needs intermediation in over 41 industries and 141 research disciplines. Search NextTechs' Technology Portfolio here.

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PTB Product of the Year Awards

Each month, the editors of Photonics Tech Briefs (PTB) select a Product of the Month. At the end of the year, we ask our readers to choose the Product of the Year -- the one product from those eight nominees that they feel was the most significant new product introduced to the photonics engineering community in 2006. The readers of PTB have selected the Product of the Year for 2006. The top three products will be recognized at a special awards dinner to be held in New York City and hosted by the editors of NASA Tech Briefs and Photonics Tech Briefs. The top three winners chosen by PTB readers are: 1. Toshiba Imaging Systems, Irvine, CA, for the IK-TF9C Three-Chip Color CCD Camera 2. Lambda Solutions, Waltham, MA, for the Dimension-P Series Raman Spectrometer 3. Newport Corp., Irvine, CA, for the Helios Transient Absorption Spectroscopy System For more information about PTB and to subscribe to the magazine, click here.

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Designer Heart

A new counter-flow heart pump being developed by researchers at Australia's Queensland University of Technology (QUT) is based on a double-output centrifugal model that pushes the blood in a counter direction to ensure correct flow through both sides of the heart. "The counter-flow pump is a bi-ventricular assist device (BVAD), meaning it supports both the left and right sides of the heart simultaneously," said lead researcher and QUT associate professor Andy Tan. "But what's so groundbreaking is that it is the first device to combine the function of two pumps into one unit." Current double-heart-pump technology requires the implant of two pumps that work independently, making it too bulky. The counter-flow pump has two independent impellers to simulate two pumps to augment the operations of the left and right ventricles. This allows the blood to flow at a higher delivery pressure as required by the left chamber of the heart, and a slower pressure as required by the right chamber. Click here for the full story.

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Brain Model

Understanding the functional significance of the folds in the outermost layer of the brains of large mammals is one of the big open questions in neuroscience. A team led by MIT, Massachusetts General Hospital, and Harvard Medical School researchers recently developed a tool that could aid such studies by helping researchers "see" how those folds develop and decay in the cerebral cortex. By applying computer graphics techniques to brain images collected using magnetic resonance (MR) imaging, the team created a set of tools for tracking and measuring these folds over time. The resulting model of cortical development may serve as a biomarker for early diagnosis of neurological disorders such as autism. For more information, click here.

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