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Optical Correlation Receiver

Goddard Space Flight Center, Greenbelt, Maryland Precise distance, time, and pulse width measurements are required for many areas of science and engineering. Time-of-flight methods are often used to measure remote distances. Optical signals are attractive because the small wavelength allows small transmit and receive telescopes. Short pulsed lasers are attractive sources that can provide high-distance measurement precision. Fast optical detectors are typically used at the receiver. Measurement precision is usually limited by the detectors’ temporal bandwidth. Picosecond and sub-picosecond pulses are difficult to measure and resolve. Optical autocorrelators have been used that employ nonlinear crystals. The optical autocorrelators require strong optical signals that can limit or preclude their use for remote, long-distance measurements.

Posted in: Briefs, Tech Briefs

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Exploration Visualization Environment

A system was designed to integrate engineering data with a virtual environment in support of the design and planning of space-based missions. Langley Research Center, Hampton, Virginia The Exploration Visualization Environment (EVE) is a simulation, visualization, and analysis system designed to integrate engineering data with a virtual environment in support of the design and planning of space-based missions. Through the integration of time-dependent data with detailed graphical models within a full-scale three-dimensional solar system or independent reference frame, the analyst can gain valuable insight into the correlation of data with simulation events. EVE provides a rich set of navigation tools (both in time and space) to enable the user to analyze the data. EVE has been developed to run crossplatform under Linux, Windows, and Mac OS X, and draws upon the experience and use of the Synergistic Engineering Environment (SEE).

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Ultrasound Competence Test Metrics

Lyndon B. Johnson Space Center, Houston, Texas Diagnostic medical ultrasound requires psychomotor skill in image acquisition and cognitive skill in image interpretation. There is a lack of an objective, quantitative, and standardized method to assess psychomotor skill. In traditional radiology and cardiology training programs, physicians are certified based on duration of training and number of procedures performed. However, assessment of trainee skill is now mandated by the worldwide shift toward competencebased medical education. The benefits of skill assessment are: 1) it provides trainees with feedback on their progress, 2) faculty can identify which trainees require additional help, and 3) hospitals have a standard for credentialing.

Posted in: Briefs, Tech Briefs, Patient Monitoring

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Executive Perspectives: Software

DOMINIC GALLELLO President & CEO MSC Software Corporation Newport Beach, CA www.mscsoftware.com The foundation stones of CAE were laid in the 1960s during the race for space. Because of the obvious defense implications, this was a national imperative. It was a time of virtually unlimited government funding for advancing engineering methods — long nights and weekends, with country first and family second.

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Executive Perspectives: Software

SVANTE LITTMARCK President & CEO COMSOL, Inc. Burlington, MA www.comsol.com With the birth some 50 years ago of computers based on integrated circuits and semiconductors, engineers had a tool that could potentially produce numerical solutions to differential equations based on the laws of science — equations that realistically modeled the physics at hand, not just a simplified version that modeled the physics in a perfectly ideal case. At that point, numerical analysis became practically very important.

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Executive Perspectives: Software

JON HIRSCHTICK Founder and Chairman of the Board Onshape Cambridge, MA www.onshape.com Over the past four decades, I’ve watched CAD grow to become a vital part of the way virtually all products are designed and manufactured. In 1981, when I was a student at MIT’s CAD research lab, there were probably only thousands of CAD users in the world. Now there are millions.

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Product Lifecycle Management

Teamcenter® 11 product lifecycle management (PLM) software from Siemens PLM Software, Plano, TX, features enhanced functionality of its Active Workspace interface, new integration tools, and the ability to manage software design processes as an integral part of the overall product lifecycle. The software seamlessly integrates application lifecycle management tools, data, and processes within the PLM environment, enabling users to manage software designs with a holistic product view. For Free Info Visit http://info.hotims.com/61059-100

Posted in: Products

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