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Hydrogen passivation for the performance enhancement of poly-Si crystallized by double-frequency YAG laser

Optoelectronics Letters 2010年第4期6卷 288-290页

作者：李娟丁思维姚颖罗翀孟志国吴春亚熊绍珍张志林郭海诚 Tianjin Key Laboratory of Photo-electronic Thin Film Devices and Technology Key Laboratory of Opto-electronic Information Science and Technology(Nankai University and Tianjin University) Ministry of Education Institute of Photo-electronics Nankai University Key Laboratory of Advanced Display and System Applications Ministry of EducationShanghai University Department of Electronic and Computer Engineering The Hong Kong University of Science and Technology

The hydrogen passivation is adopted to enhance the performance of poly-Si crystallized by YAG laser annealing(LA polySi).The effects of passivation time,passivation power and passivation temperature on the hall mobility of the LA poly-Si are investigated and the mechanism of the hydrogen passivation is preliminarily *** is found that the effect of the hydrogen passivation on the qulity of YAG laser annealed poly-Si is also correlated with the deposition method and the defect type in it.

关键词： YAG激光器性能增强氢钝化结晶双频率聚硅激光退火多晶硅

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Enhancement of photovoltaic cell response due to high-refractive-index encapsulants

Enhancement of photovoltaic cell response due to high-refrac...

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作者： Ma, Ming Mont, Frank W. Poxson, David J. Cho, Jaehee Schubert, E. Fred Welser, Roger E. Sood, Ashok K. Department of Materials Science and Engineering Rensselaer Polytechnic Institute Troy NY 12180 United States Department of Physics Applied Physics and Astronomy Department of Electrical Computer and System Engineeringand Future Chips Constellation Rensselaer Polytechnic Institute Troy NY 12180 United States Magnolia Optical Technologies Woburn MA 01801 United States

This study compares the electrical output of photovoltaic (PV) cells encapsulated with silicones having different refractive indices to unencapsulated PV cells. It is demonstrated that the optical concentration ratio of dome-shaped concentrator PV systems can be increased by using a higher refractive-index encapsulant. The short-circuit photocurrent of the PV cell having high-refractive-index encapsulation (n=1.57) is 71% higher than that of the PV cell having a low-refractive-index encapsulation (n=1.41), and 316% higher than that of the unencapsulated PV cell. These experimental concentration-ratio enhancements are consistent with the theoretical estimates of concentration ratio dependence on the refractive index of the PV concentrator. © 2010 American Institute of Physics.

关键词： Refractive index

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An Efficient Multicast Scheme in the Nested NEMO

An Efficient Multicast Scheme in the Nested NEMO

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2010 International Symposium on computer,Communication, Control and Automation

作者： Shr-Shiuan Tzeng Hsiao-Chen Kuo Department of Computer Science and Information Engineering National Chiayi University Department of Management Information System Far East University

Sharing communications are not easy to do in the mobility networks (MONETs) for the limited bandwidth and the overhead of *** is an intuitive method to solve this *** improve the performance,the multicast topology should be redesigned for the *** proposed an efficient communication algorithm with multicast schemes in a network mobility (NEMO) *** Mobile Router Forwarding Scheme (MRFS) algorithm is proposed for this *** can find that MRFS can reduce the storage cost for every Mobile Router (MR) especially in the TLMR (Top level MR).

关键词： Network Mobility (NEMO),mobility network (MONET),Mobile Router (MR),Multicast.

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A Framework for Network Security Situation Awareness Based on Knowledge Discovery

A Framework for Network Security Situation Awareness Based o...

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2010 2nd International Conference on computer engineering and Technology(2010年第二届计算机工程与技术国际会议 ICCET 2010)

作者： Fang Lan Ma Guoqing Wang Chunlei Department of Network Research Institute of System Engineering Beijing China Department of Computer Science Tsinghua University Beijing China

ISBN: (纸本)9781424463473;9781424463497;9781424463503

Network security situation awareness provides the unique high level security view based upon the security alert events. But the complexities and diversities of security alert data on modern networks make such analysis extremely difficult. In this paper,we analyze the existing problems of network security situation awareness system and propose a framework for network security situation awareness based on knowledge discovery. The framework consists of the modeling of network security situation and the generation of network security situation. The purpose of modeling is to construct the formal model of network security situation measurement based upon the D-S evidence theory,and support the general process of fusing and analyzing security alert events collected from security situation sensors. The generation of network security situation is to extract the frequent patterns and sequential patterns from the dataset of network security situation based upon knowledge discovery method and transform these patterns to the correlation rules of network security situation,and finally to automatically generate the network security situation graph. Application of the integrated Network Security Situation Awareness system (Net-SSA) shows that the proposed framework supports for the accurate modeling and effective generation of network security situation.

关键词： network security:situation awareness:data mining:knowledge discovery

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A design method for minimum cost path of flying probe in-circuit testers

A design method for minimum cost path of flying probe in-cir...

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SICE Annual Conference

作者： Yuki Hiratsuka Fumihiko Katoh Katsumi Konishi Seiichi Shin Department of System Engineering University of Electro-Communications Tokyo Japan Department of Computer Science Kogakuin University Tokyo Japan

ISBN: (纸本)9781424476428

This paper focuses on X-Y type in-circuit testers, which has two flying probes. The problem of finding the ordering of inspection points that minimizes the total time of inspection is an expansion of the travelling salesman problem (TSP). We formulate the problem of finding the minimum traveling cost of flying probes as the 0-1 integer programming, and an algorithm to solve this problem is proposed. Experimental results show the effectiveness of the method.

关键词： Probes Inspection Printed circuits Traveling salesman problems Linear programming Testing Trajectory

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Hiding data in video file: An overview

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Journal of Applied sciences 2010年第15期10卷 1644-1649页

作者： Al-Frajat, A.K. Jalab, H.A. Kasirun, Z.M. Zaidan, A.A. Zaidan, B.B. Department of Software Engineering Faculty of Computer Science and Information Technology University Malaya 50603 Kuala Lumpur Malaysia Department of Computer System and Technology Faculty of Engineering Multimedia University Jalan Multimedia 63100 Cyberjaya Malaysia

The aim of this review is to study the methods of steganography using the video file as a cover carrier. The steganography is the art of protecting the information through embedding data in medium carrier, for instants this study illustrate historically this art, as well as the study describes methods as a review for this art in the video file. The video based steganography can be used as one video file, separated images in frames or images and audio files. Since that, the use of the video based steganography can be more eligible than other multimedia files. As a result of this study, the video based steganography has been discussed and the advantages of using the video file as a cover carrier for steganography have been proposed. © 2010 Asian Network for Scientific Information.

关键词： Steganography

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Implicit detection of stealth software with a local-booted virtual machine

Implicit detection of stealth software with a local-booted v...

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International Conference on Information sciences and Interaction sciences (ICIS)

作者： Yan Wen Minhuan Huang Jinjing Zhao Xiaohui Kuang Beijing Institute of System Engineering Beijing CN Department of Computer Science & Technology Tsinghua University Beijing China

Resource hiding is commonly used by stealth malware to evade detection by anti-malware scanners. In this paper, we present the design, implementation, and evaluation of Libra, a new VM-based anti-stealth-malware approach. By introducing the novel local-booting technology of our previous work called Secure Virtual Execution Environment, Libra VM just boots from the underlying host OS but not a newly installed OS image. Consequently, Libra accurately reproduces the software environment of the underlying preinstalled OS within the Libra VM. In addition, with proposing a set of unique techniques to implicitly construct the trusted OS-level semantic view of resource from within the virtualized hardware layer, Libra is decoupled with the guest information which is subvertable to the privileged guest malware. Thus, Libra provides a promising way to detect the existing stealth malware in the host OS. We have implemented a prototype of Libra on Windows platforms and our evaluation results with real-world rootkits demonstrate the practicality and effectiveness of our approach.

关键词： Virtual machining Virtual manufacturing Resource virtualization Hardware Detectors Laboratories computer science Information systems computer security Information security

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Palacios and Kitten: New high performance operating systems for scalable virtualized and native supercomputing

Palacios and Kitten: New high performance operating systems ...

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International Symposium on Parallel and Distributed Processing (IPDPS)

作者： John Lange Kevin Pedretti Trammell Hudson Peter Dinda Zheng Cui Lei Xia Patrick Bridges Andy Gocke Steven Jaconette Mike Levenhagen Ron Brightwell Department of Electrical Engineering and Computer Science Northwestern University EECS USA Scalable System Software Department Sandia National Laboratories USA Department of Computer Science University of New Mexico USA

Palacios is a new open-source VMM under development at Northwestern University and the University of New Mexico that enables applications executing in a virtualized environment to achieve scalable high performance on large machines. Palacios functions as a modularized extension to Kitten, a high performance operating system being developed at Sandia National Laboratories to support large-scale supercomputing applications. Together, Palacios and Kitten provide a thin layer over the hardware to support full-featured virtualized environments alongside Kitten's lightweight native environment. Palacios supports existing, unmodified applications and operating systems by using the hardware virtualization technologies in recent AMD and Intel processors. Additionally, Palacios leverages Kitten's simple memory management scheme to enable low-overhead pass-through of native devices to a virtualized environment. We describe the design, implementation, and integration of Palacios and Kitten. Our benchmarks show that Palacios provides near native (within 5%), scalable performance for virtualized environments running important parallel applications. This new architecture provides an incremental path for applications to use supercomputers, running specialized lightweight host operating systems, that is not significantly performance-compromised.

关键词： Operating systems Application virtualization Open source software Laboratories Large-scale systems Hardware Platform virtualization Memory management Environmental management Supercomputers

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A simultaneous design of structural and control systems using an infeasible controller sequence

A simultaneous design of structural and control systems usin...

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SICE Annual Conference

作者： Yasushi Kami Takeshi Terada Eitaku Nobuyama Department of Electrical and Computer Engineering Akashi National College of Technology Akashi Japan Department of the Mechanical and Electronic System Engineering Advanced Courses of Akashi National College of Technology Faculty of Computer Science and System Engineering Kyushu Institute of Technology Iizuka Japan

ISBN: (纸本)9781424476428

This paper is concerned with a simultaneous design problems of structural and reduced-order H ∞ control systems. The purpose of this paper is to propose an iterative approach to the simultaneous design problem, which constructs a sequence of infeasible controller variables The feature of our approach is that it is easy to choose an initial point which is needed to carry out the iterative approach. The efficiency of our approach is shown by a numerical example.

关键词： Iterative methods Structural engineering Optimization Linear matrix inequalities Output feedback Transfer functions

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Validated pole assignment method based on verified numerical computation

Validated pole assignment method based on verified numerical...

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SICE Annual Conference

作者： Kentaro Yano Masanobu Koga Hiromasa Nakashima Department of Information and Multimedia Technology Fukuoka Institute of Technology Fukuoka Japan Faculty of Computer Science and System Engineering Kyushu Institute of Technology Fukuoka Japan Graduate School of Computer Science and System Engineering Kyushu Institute of Technology Fukuoka Japan

ISBN: (纸本)9781424476428

This paper proposes validated control system design method based on verified numerical computation. The proposed method designs a controller and validates it using verified numerical computation. We also propose a method to find the numerically most design-specification satisfied controller quickly by using multiple-precision arithmetic. And, this paper applies a proposed method to pole assignment problem.

关键词： Control systems Design methodology Accuracy Computational modeling Mathematical model Numerical models Equations

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