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10th International Conference on Miniaturized systems for Chemistry and Life Sciences, MicroTAS 2006

作者： Koev, Stephan T. Wu, Li-Qun Payne, Gregory F. Ghodssi, Reza Department of Electrical and Computer Engineering University of Maryland College Park MD 20742 United States Institute for Systems Research University of Maryland College Park MD 20742 United States University of Maryland Biotechnology Institute University of Maryland College Park MD 20742 United States Bioengineering Graduate Program University of Maryland College Park MD 20742 United States

We demonstrate, for the first time, micromechanical detection of the neurotransmitter dopamine and its discrimination from ascorbic acid. Microcantilever sensors were fabricated and coated with the polysaccharide chitosan by electrodeposition. The cantilevers were used for electrochemical oxidation of dopamine solution. The products of this reaction crosslink the chitosan film and create a tensile stress, bending the cantilever out of plane considerably. By contrast, electrochemical oxidation of ascorbic acid solution does not cause chitosan crosslinking and appreciable cantilever bending. This method is an improvement over conventional electrochemical dopamine detection techniques (e.g. cyclic voltammetry) that are highly non-specific. © 2006 Society for Chemistry and Micro-Nano systems.

关键词： Chitosan

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Reverse engineering of software life cycle data in certification projects

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Journal of Aerospace Computing, Information and Communication 2006年第6期3卷 320-326页

作者： Rierson, Leanna Lingberg, Barbara Federal Aviation Administration 800 Independence Ave SW Washington DC 20591 Federal Aviation Administration Washington DC 20591 Aircraft Computer Software FAA Aircraft Engineering Division FAA Software/Digital Systems Safety Program

Some applicants, developers, and commercial-off-the-shelf (COTS) software vendors have proposed reverse engineering as an approach for satisfying RTCA/DO-178B objectives for airborne software. RTCA/DO-178B, Software Considerations in Airborne systems and Equipment Certification, serves as the means of compliance for most airborne software in civil aircraft. DO-178B defines reverse engineering as "the method of extracting software design information from the source code" and provides guidance particular to reverse engineering, when it is used to upgrade a development baseline. For purposes of this paper, reverse engineering is an approach for creating software life cycle data that did not originally exist, cannot be found, is not adequate, or is not available to a developer in order to meet applicable DO-178B objectives. Reverse engineering is not just the generation of data-rather it is a process to assure that the data is correct, the software functionality is understood and well documented, and the software functions as intended and required by the system. Reverse engineering is not, as some software developers propose, just an effort to generate the software life cycle data without intent to build in quality and the resulting design assurance. This paper explores reverse engineering in airborne software projects, by explaining a definition for the certification domain, describing the motivation for its use, and documenting the certification concerns. Two actual cases of reverse engineering are also described to illustrate the certification concerns in real projects.

关键词： Reverse engineering

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Enhancement of light extraction in gainn light-emitting diodes by conductive omni-directional reflectors

Enhancement of light extraction in gainn light-emitting diod...

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Conference on Lasers and Electro-Optics and 2006 Quantum Electronics and Laser Science Conference, CLEO/QELS 2006

作者： Kim, Jong Kyu Xi, J.-Q. Luo, Hong Schubert, E. Fred Cho, Jaehee Sone, Cheolsoo Park, Yongjo Electrical Computer and Systems Engineering Dept. Rensselaer Polytechnic Institute 110 Eighth St. Troy NY 12180 United States Dept. of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute 110 Eighth St. Troy NY 12180 United States Photonics Program Team Samsung Advanced Institute of Technology Suwon 440-600 Korea Republic of

Enhancement of light extraction in a GaInN light-emitting diode employing a conductive omnidirectional reflector consisting of GaN, an indium-tin oxide nanorod low-refractive-index layer, and an Ag layer is presented.... 详细信息

ISBN: (纸本)1557528136

关键词： Light emitting diodes

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Ontology Modelling and engineering for Product Development Process Description and Integration

Ontology Modelling and Engineering for Product Development P...

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IEEE International Conference on Industrial Informatics (INDIN)

作者： Q. Z. Yang C. Y. Miao Y. Zhang R. Gay PLM Program Singapore Institute of Manufacturing Technology Singapore School of Computer Engineering Nanyang Technological University Singapore Computing and Information Systems Stansfield College Singapore School of EEE Nanyang Technological University Singapore

This paper presents an ontology modeling and engineering approach to semantic description and integration of product development processes. Using OWL and OWL-S, the proposed method formalizes the underlying semantic representations of the product development process in domain object ontologies and the generic problem solving structures in domain task ontologies. Both the domain object and task ontologies are incorporated in the OWL-S based application service ontologies to facilitate the semantic process description and semantic service discovery, composition in the integration of product development processes. The approach has been applied to the development of ontological models for the consumer product development process in a pilot project of a national research program in Singapore namely the Integrated Manufacturing and Service systems (IMSS).

关键词： Ontologies Product development Terminology Collaboration OWL Standardization Resource description framework computer aided manufacturing Manufacturing processes Virtual manufacturing

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ISHM implementation for Constellation systems

ISHM implementation for Constellation Systems

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AIAA/ASME/SAE/ASEE 42nd Joint Propulsion Conference

作者： Figueroa, Fernando Holland, Randy Schmalzel, John Duncavage, Dan Crocker, Alan Alena, Rick NASA Stennis Space Center Stennis Space Center MS 39529 Rowan University Dept. of Electrical and Computer Engineering Glassboro NJ 08028 NASA Johnson Space Center Houston TX 77058 NASA Ames Research Center Moffett Field CA 94035 Science and Technology Division EA41 Stennis Space Center MS 39529 AIAA Department of Electrical and Computer Engineering Rowan University Glassboro NJ 08028 International Space Station Program OD NASA Johnson Space Center Houston TX 77058 Systems Division Mission Operations Directorate DF NASA Johnson Space Center Houston TX 77058 Intelligent Systems Division MS 269-4 Moffett Field CA 94035

ISBN: (纸本)1563478188

This paper addresses methodic implementation of a credible ISHM capability for elements of Constellation systems. ISHM capability must be implemented by a combination of on-board and ground elements, each contributing to determining the health of systems in the most effective manner. Implementation of ISHM capability must evolve continuously to reach higher and higher levels of functional capability. The implication is that a sustainable approach must be defined in order to accomplish a believable capability. This paper describes the methodology, the elements, and the technology to implement ISHM capability throughout the life cycle of elements of Constellation systems, reaching beyond individual elements that might have a limited life while the constellation moves on.

关键词： Spacecraft propulsion

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A high - Speed reclosing operation with fault current limiter

A high - Speed reclosing operation with fault current limite...

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IASTED International Conference on Energy and Power systems

作者： Fujita, Junya Iwatsuki, Toshiharu Yukita, Kazuto Hosoe, Tadashi Goto, Yasuyuki Ichiyanagi, Katsuhiro Hoshino, Yukio Yamamoto, Nobuyuki Sugimoto, Shigeyuki Avatchanakorn, Vichit Department of Electrical and Electronics Engineering Aichi Institute of Technology 1247 Yagusa Yachigusa Toyota Aichi 470-0392 Japan Research and Development Division Chubu Electric Power Co. Inc. 20-1 Kitasekiyama Ohdaka-cho Midori-ku Nagoya 459-8522 Aichi Japan Program in Computer Information Systems Assumption University ABAC Ramkhamhaeng Soi 24 Hua Mark Bangkok 10240 Thailand

ISBN: (纸本)0889865868

This paper proposes a new high-speed reclosing operation method to improve the stability in power system with the fault current limiter. From an angular velocity, a field system voltage and a phase of the generator, the proposed operation method calculates the optimum reclosing time domain. The fault current limiter is used the reactance type or the resistive type. The examination was carried out using the Inst. of Electrical Engineers of Japan one-machine infinite bus system model in order to demonstrate the effectiveness of the proposed method. The Impact Ver2.3 was used in the computer simulation.

关键词： Limiters

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Enhancement of light extraction in GaInN light-emitting diodes by conductive omni-directional reflectors

Enhancement of light extraction in GaInN light-emitting diod...

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Conference on Lasers and Electro-Optics (CLEO)

作者： Jong Kyu Kim J.-Q. Xi Hong Luo E. Fred Schubert Jaehee Cho Cheolsoo Sone Yongjo Park Electrical Computer and Systems Engineering Department Rensselaer Polytechnic Institute Troy NY USA Department of Physics Applied Physics and Astronomy Rensselaer Polytechnic Institute Troy NY USA Photonics Program Team Samsung Advanced Institute of Technology Suwon South Korea

ISBN: (纸本)1557528136

关键词： Indium tin oxide Light emitting diodes Refractive index Gallium nitride Films Reflectivity Optical reflection

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A genetic algorithm for the optimization of cable routing

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systems and computers in Japan 2006年第7期37卷 61-71页

作者： Ma, Xuan Iida, Kazuhiro Xie, Mengchun Nishino, Junji Odaka, Tomohiro Ogura, Hisakazu Graduate School of Engineering University of Fukui Fukui City 910-8507 Japan Wakayama National College of Technology Gobo City 644-0023 Japan Faculty of Automation and Information Engineering Xi an University of Technology B Techno College Department of Electrical and Computer Engineering Wakayama National College of Technology Information Processing Society of Japan China Mechanical Design Society Department of Systems Engineering University of Electro-Communications Japan Society for Fuzzy Theory and Intelligent Informatics Japanese Academy of Facial Studies Japan Society of Kansei Engineering Graduate Program of Nuclear Power and Energy Safety Engineering Graduate School of Engineering Fukui University IEEE CS ACM IPSJ IEICE JSMBET Department of Human and Artificial Intelligent Systems JSAI Japan SOFT IEEE

In this paper the authors propose a structural method for a genetic algorithm (GA) for the optimization problem of cable routing in which cables have to be laid optimally. When there are no limits on the layout routes, the optimal routes for the individual cables can be found using the Dijkstra method in a finite discrete graph. However, when there are limits on the capacity in the layout routes, optimization cannot be performed using the Dijkstra method. The proposed GA is a two-level hierarchical GA that uses chromosome coding involving two levels. The routes for each cable and the combinations of cable routes are defined respectively, and layout route selection is optimized overall through genetic operations involving these levels. Block crossover and block mutation are used as genetic operations in the first level. In addition, a method to take advantage of lethal genes, which do not satisfy the constraints and are generated in the second level is used. computer simulations confirm that the two-level hierarchical GA with these genetic operations functions effectively for the optimization problem of cable routing. © 2006 Wiley Periodicals, Inc.

关键词： Electric cable laying

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Real-time organ motion tracking and fast image registration system for MRI-guided surgery

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systems and computers in Japan 2006年第1期37卷 83-92页

作者： Tokuda, Junichi Hirano, Masaya Tsukamoto, Tetsuji Dohi, Takeyoshi Hata, Nobuhiko Graduate School of Information Science and Technology University of Tokyo Tokyo 113-8656 Japan GE Yokogawa Medical Systems Ltd. Hino 191-8503 Japan International Society for Computer-Aided Surgery Japan Society for Computer-Aided Surgery Japan Society for Magnetic Resonance in Medicine GE Yokogawa Medical Systems Ltd. Imaging Application Tech. Center MR Group R and D Laboratory Technology Center GE Yokogawa Medical Systems Ltd. Society for Magnetic Resonance in Medicine Graduate School of Information Science and Technology Society for Life Support Technology Japan Society for Organ Preservation Biology and Medicine Society for Precision Engineering Society for Medical Image Computing and Computer Assisted Intervention International Union for Physics and Engineering Sciences in Medicine JSMEBE Japan Society for Life Assistance Technology Brigham and Women's Hospital Harvard Medical School MR Therapy Program

The advantage of magnetic resonance imaging (MRI)-guided surgery, in which MR images taken during surgery are used to guide the surgery, has been recognized recently. However, there is a problem, due to long imaging time of MRI, that it is difficult to capture the respiratory organ motion. It is often a constraint that the patient must hold his or her breath, especially in the treatment of the abdominal region. Consequently, this paper proposes a method of eliminating this constraint in MRI-guided surgery by real-time monitoring of the movement of the organ involved in the surgery by means of the signal derived from MRI. Specifically, the navigator echo is extracted in imaging during surgery. The movement of the organ involved in surgery is detected on the basis of the change in the calculated projection profile, and the results are presented to the surgeon. In this study, the procedure is built into a 1.5-T clinical MRI system. The feasibility of the proposed system was examined under clinical conditions by evaluating its accuracy and delay in a phantom experiment, and also in an in vivo experiment on the liver of a volunteer. The results are reported in this paper. © 2005 Wiley Periodicals, Inc.

关键词： Motion estimation

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Data Storage Media Sanitization Procedures at the U.S. Agency For International Development (USAID)

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EDPACS 2006年第8期29卷 11-19页

作者： James Craft William Cleveland The Information Systems Security Officer at the United States Agency for International Development (USAID) Bureau for Management Information Resources Management (M/IRM) Information Systems Security Team. He has a BS in business management from George Mason University and has 22 years of experience focusing primarily on systems engineering cybersecurity and enterprise operations. He has played a major role in the implementation of the U.S. Government's Model Information Security Policy. The USAID PRIME Security Program Manager Computer Sciences Corporation in Arlington Virginia. He has MS degrees in information and telecommunications systems management and in military science. Cleveland has over 20 years of experience in the planning and management of a wide variety of functions including business process reengineering and IT security.

This article is derived from a Best Security Practice (BSP) developed by the U.S. Agency for International Development (USAID), Bureau for Management, Information Resources Management (M/IRM), Information systems Security Team. The USAID is an independent agency that provides economic, development, and humanitarian assistance around the world in support of the foreign policy goals of the United States. It is located in the Ronald Reagan Building in Washington, D.C.

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