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Masked Proportional Routing

This procedure enables adaptation to changing network conditions. Masked proportional routing is an improved procedure for choosing links between adjacent nodes of a network for the purpose of transporting an entity from a source node (“A”) to a destination node (“B”). The entity could be, for example, a physical object to be shipped, in which case the nodes would represent waypoints and the links would represent roads or other paths between waypoints. For another example, the entity could be a message or packet of data to be transmitted from A to B, in which case the nodes could be computer-controlled switching stations and the links could be communication channels between the stations. In yet another example, an entity could represent a workpiece while links and nodes could represent, respectively, manufacturing processes and stages in the progress of the workpiece towards a finished product. More generally, the nodes could represent states of an entity and the links could represent allowed transitions of the entity.

Posted in: Briefs, TSP

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Real-Time Adaptive Color Segmentation by Neural Networks

Changing images would be analyzed to detect features of interest. Artificial neural networks that would utilize the cascade error projection (CEP) algorithm have been proposed as means of autonomous, real-time,adaptive color segmentation of images that change with time.In the original intended application,such a neural network would be used to analyze digitized color video images of terrain on a remote planet as viewed from an uninhabited spacecraft approaching the planet.During descent toward the surface of the planet, information on the segmentation of the images into differently colored areas would be updated adaptively in real time to capture changes in contrast, brightness, and resolution, all in an effort to identify a safe and scientifically productive landing site and provide control feedback to steer the spacecraft toward that site. Potential terrestrial applications include monitoring images of crops to detect insect invasions and monitoring of buildings and other facilities to detect intruders.

Posted in: Briefs, TSP

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Product Lifecycle Management System Aligns Manufacturer's Design and Development

An aerospace equipment manufacturer uses PLM to improve collaboration among design and development systems worldwide. Smiths Aerospace, a leading trans-Atlantic aerospace equipment manufacturer, has grown dramatically in recent years through a combination of strategic acquisitions and major program wins. To maintain its key position in the supply chains of all major military and civil aircraft and engine manufacturers, the company needed to align its heterogeneous design and development systems around the world. In addition to aligning these systems,the company also wanted to integrate new divisions into its Product Lifecycle Management (PLM) system.

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Designing Application Software for DSP Chips

"Higher-level" programming languages and software help developers quickly set up and test an application. When it comes to building a digital signal processing (DSP) board, it is important not to neglect the requirements of the application code — the code that actually acquires and processes data to provide useful results. Developers can write code using the assembly language native for a chosen DSP chip, or they can use a higher-level language such as C or C++ that a compiler converts into the operating code for a specific DSP chip. Even higher-level tools and software applications let developers perform operations from menus or drag-and-drop lists of functions; the underlying code of the tool or application converts these graphical operations into the operating code for the specific DSP chip.

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Indentured Parts List Maintenance and Part Assembly Capture Tool—IMPACT

Viewing and maintaining the complex assembly hierarchies of large databases is made easier. Johnson Space Center’s (JSC's) indentured parts list (IPL) maintenance and parts assembly capture tool (IMPACT) is an easy-to-use graphical interface for viewing and maintaining the complex assembly hierarchies of large databases. IMPACT, already in use at JSC to support the International Space Station (ISS), queries, updates, modifies, and views data in IPL and associated resource data, functions that it can also perform, with modification, for any large commercial database. By enabling its users to efficiently view and manipulate IPL hierarchical data, IMPACT performs a function unlike that of any other tool. Through IMPACT, users will achieve results quickly, efficiently, and cost effectively.

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Fast Query-Optimized Kernel-Machine Classification

Computation is accelerated by an order of magnitude, without loss of accuracy. A recently developed algorithm performs kernel-machine classification via incremental approximate nearest support vectors. The algorithm implements support-vector machines (SVMs) at speeds 10 to 100 times those attainable by use of conventional SVM algorithms. The algorithm offers potential benefits for classification of images, recognition of speech, recognition of handwriting, and diverse other applications in which there are requirements to discern patterns in large sets of data.

Posted in: Briefs, TSP

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Forensic Analysis Specialists Discover Product Failure Causes Using FEA Software

Finite element analysis software is used to determine why products fail. Engineers use a wide range of tools and techniques to ensure that the designs they create are safe. However, accidents sometimes happen and when they do, companies need to know if a product failed because the design was inadequate or if some other cause, such as user error, was to blame. Whether a manufacturer incurs the cost of damages, recalls, replacements, and potential legal liability for injuries often depends on the cause of the accident.

Posted in: Briefs

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