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International Microsystems, Packaging, Assembly and Circuits Technology (IMPACT)

作者： Toshio Tomimura Masaru Ishizuka Department of Advanced Mechanical Systems Graduate School of Science and Technology Kumamoto University Kumamoto Japan Department of Mechanical Systems Engineering Faculty of Engineering Toyama Prefectural University Imizu Japan

In the field of scientific computing, Basic, C, and Fortran are widely used all over the world. Lots of beginners and students, however, suffer problems in making simulation programs due to inexperienced and complicated computer programming rules. Under such circumstances, some practical examples solved by using the spreadsheet software like Excel have been reported recently [1-3], where just by using equations written in each cell, calculations are performed without making any program. In the Excel analysis, writing and debugging are visually conducted by simply making use of worksheet analysis, and iterative calculations are carried out automatically until the prescribed convergence criterion is satisfied. Concerning calculated results, numerical values shown in the computational domain are immediately visualized using the chart wizard. Therefore, by using the spreadsheet software like Excel, even the students and younger researchers who have just started to study numerical analysis can perform calculations easily and quickly without studying any special knowledge about the computer language, and in addition without writing lengthy computer programs. In this study, for the purpose of introducing the abovementioned useful method to thermal analysis of electrical apparatus, electronic equipment and so on, the calculation process by thermal network method has been shown by using the concrete example of a compact fluorescent lamp.

关键词： Mathematical model Equations Fluorescent lamps Thermal analysis Insulation Integrated circuits

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Secure authentication in group communications using Media Access Control (MAC) address

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Recent Patents on Computer Science 2010年第1期3卷 14-19页

作者： Hong, Sunghyuck Baker, Jeff Song, Jaeki Department of Computer Science Texas Tech University Lubbock TX 79409-3104 United States School of Business and Management American University of Sharjah PO Box 26666 Sharjah United Arab Emirates Information Systems and Quantitative Sciences Rawls College of Business Administration Texas Tech University Lubbock TX 79409-2101 United States Service Sciences Management and Engineering Graduate School of Business Sogang University Seoul Korea Republic of

We propose adding users' Media Access Control (MAC) addresses to standard X.509 certificates to provide more secure authentication. Recent patents demonstrate efforts on a X.509 certificate by adding security features in order to establish secure communications. The MAC address can be added by the issuing Certification Authority (CA) to the "extensions" section of the X.509 certificate. We demonstrate that when two users with MAC address information on their digital certificates communicate, the MAC address on the first user's certificate can be easily verified by the second user. In this way, security can be improved without markedly degrading system performance and the level of initial trust between participants in virtual communities can be enhanced. © 2010 Bentham Science Publishers Ltd.

关键词： Authentication

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A multistage scenario-based inexact fuzzy-stochastic chance-constrained programming for water resources management under uncertainty

A multistage scenario-based inexact fuzzy-stochastic chance-...

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International Conference on Natural Computation (ICNC)

作者： Lei Jin Guohe Huang Yurui Fan Li Wang Huaidong Zhou Department of Environmental Engineering Xiamen University of Technology Xiamen China Environmental Systems Engineering Program Faculty of Engineering University of Regina Regina SAS Canada

In this study, a multistage scenario-based inexact fuzzy-stochastic chance-constrained programming (MSIFSCCP) is proposed for water resources management under uncertainty. The developed a hybrid inexact optimization approach integrates multistage scenario-based interval-stochastic programming (MSISP), chance-constrained programming (CCP) and fuzzy-stochastic linear programming (FSLP) within a general optimization framework. It can directly incorporated and reflect uncertainties presented as both interval numbers and probability distributions. Using semi-infinite analysis can be incorporated into the modeling framework to deal with infinite α-cuts to the membership functions of fuzzy parameters. This model could be used for water authorities and thus it provides useful decision under various social environmental system conditions.

关键词： Optimized production technology Reservoirs programming Uncertainty Biological system modeling Resource management

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A case study of concurrent engineering application on the development of parts for the White Goods industry in Brazil

A case study of concurrent engineering application on the de...

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International Conference on Computers & Industrial engineering (CIE)

作者： Osiris Canciglieri R. J. B. de Sampaio J. P. B. Kovalchuk Teófilo Miguel de Souza Department of Manufacturing Engineering of Pontifical Catholic Industrial and Systems Engineering Graduate Program (PPGEPS) University of Paraná (PUCPR) Curitiba Parana Brazil Department of Electrical Engineering São Paulo State University Sao Paulo Brazil

This classical way to manage product development processes for massive production seems to be changing: high pressure for cost reduction, higher quality standards, markets reaching for innovation lead to the necessity of new tools for development control. Into this, and learning from the automotive and aerospace industries factories from other segments are starting to understand and apply manufacturing and assembly oriented projects to ease the task of generate goods and from this obtain at least a part of the expected results. This paper is intended to demonstrate the applicability of the concepts of Concurrent engineering and DFM/DFA (Design for Manufacturing and Assembly) in the development of products and parts for the White Goods industry in Brazil (major appliances as refrigerators, cookers and washing machines), showing one case concerning the development and releasing of a component. Finally is demonstrated in a short term how was reached a solution that could provide cost savings and reduction on the time to delivery using those techniques.

关键词： Doped fiber amplifiers Assembly Production Plastics Industries

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The P3E2 project: The introduction, implementation and evaluation of engineering design integrated across the middle school curriculum

The P3E2 project: The introduction, implementation and evalu...

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2010 ASEE Annual Conference and Exposition

作者： Pizziconi, Vincent Haag, Susan Ganesh, Tirupalavanam Cozort, Lynn Krause, Stephen Tasooji, Amaneh Ramakrishna, B.L. Meldrum, Deirdre Lunt, Brian Valdez, Albert Yarbrough, Victoria Harrington Bioengineering Program Fulton School of Engineering Arizona State University United States Research and Evaluation for CRESMET Arizona State University United States Department of Engineering Education Arizona State University United States Department of Academic Operations School of Mechanical Aerospace Chemical and Materials Engineering Arkansas State University United States School of Materials Arizona State University United States Materials Program Fulton School of Engineering Arizona State University United States Center for Ecogenomics Biodesign Institute United States Ira A. Fulton Schools of Engineering Arizona State University United States Harrington Bioengineering Program School of Biological and Health Systems Engineering Arizona State University United States

The Partnership, Pathway, and Pipeline for engineering Education (P 3E2) Project is an exploratory collaboration between ASU engineering faculty and Santan Junior High School teachers from a broad range of subjects and local community members aimed at engaging middle school students in real world and grade-relevant engineering activities as a way of enriching the value of their STEM education as it relates to STEM careers and their broad societal relevance. Central to the P3E2 project is the introduction of engineering design across the curricula via the implementation of the engineering design process through engineering service-learning projects that are intended to facilitate integrated learning of science, math, social studies and language arts. Such STEM-based integrated activities have been co-developed in partnership with middle school teachers and are designed to engage students and captivate their interest while promoting problem-solving and entrepreneurial skills by addressing real world needs in their local communities. This one-year pilot project consisted of four key phases that were implemented in nearly equal quarters, i.e., (a) the creation of a vibrant partnership to assess, motivate and inform teachers and counselors about engineering and its societal connections, workforce barriers, and curricular relevance, (b) the development of a viable education pathway to successfully engage 8th grade students in the full spectra of STEM-based learning that captivate their interest through integrated activities that span across science, mathematics, language arts and social studies, (c) the implementation of semester-long science and engineering fair projects chosen by students who were mentored by ASU engineering undergraduate and graduate students and (d) the evaluation of the P3E2 program effectiveness using designated assessment tools that were developed and administered to the teachers and students at the middle school. The major findings and the lessons

关键词： Students

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BitTorrent with support nodes for provider-initiated P2P services

BitTorrent with support nodes for provider-initiated P2P ser...

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IEEE International Conference on Industrial Informatics (INDIN)

作者： Hideki Tode Takeru Hiraishi Department of Computer Science and Information Systems Graduate School of Engineering Osaka Prefecture University Japan

The content distribution services via the Internet have become popular. However, these services have some problems that prevent users from getting a file efficiently and there still remains much room for improving the performance. In this paper, we focus on representative hybrid P2P network application, BitTorrent, and try to resolve these problems. Because the content files are divided into pieces and finely handled at the piece level, BitTorrent allows users to exchange data efficiently in massively parallel transmission manner. However, there exist some problems with BitTorrent two of which are mainly focused on this paper. The first problem is that BitTorrent has a possibility to lack the nodes who has a entire file. The second one is that some nodes can't receive data for some unfair reason because of the limit on connected nodes. Therefore, in this paper, we propose the method for placing transfer support nodes by service providers to allow users to get contents efficiently and evaluates the proposed method by using computer simulation.

关键词： Peer to peer computing Network servers Client-server systems Content management Web and internet services File servers Computer science Information systems Computer simulation Information management

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Using a hypervisor to migrate running operating systems to secure virtual machines

Using a hypervisor to migrate running operating systems to s...

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34th Annual IEEE International Computer Software and Applications Conference, COMPSAC 2010

作者： Nomoto, Tsutomu Oyama, Yoshihiro Eiraku, Hideki Shinagawa, Takahiro Kato, Kazuhiko Department of Computer Science Faculty of Electro-Communications University of Electro-Communications Tokyo Japan IGEL Co. Ltd. Tokyo Japan Department of Computer Science Graduate School of Systems and Information Engineering University of Tsukuba Ibaraki Japan

ISBN: (纸本)9780769540856

We propose HyperShield, which is a hypervisor that can be inserted into and removed from a running operating system, for improving security. While many existing security-oriented hypervisors require modifying or rebooting an overlying operating system, HyperShield does not require this. HyperShield is intended to be a general framework for various security mechanisms. The current implementation provides two mechanisms for preventing kernel-level buffer overflow. One detects the execution of user code with the kernel privilege, and the other detects malicious modification of a return address in a control stack. HyperShield is implemented on Linux as a loadable kernel module. When the module is inserted, it places itself under the operating system and executes as a hypervisor. The operating system is migrated into a virtual machine and managed by the hypervisor. HyperShield detects attacks by combining virtualization of memory management with a hardware-assisted execution-bit feature. We have confirmed through experiments that HyperShield successfully prevented kernel-level buffer overflow attacks. © 2010 IEEE.

关键词： Virtual machine

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Binary encoded-prototype tree for probabilistic model building GP

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Transactions of the Japanese Society for Artificial Intelligence 2010年第2期25卷 340-350页

作者： Yanase, Toshihiko Hasegawa, Yoshihiko Iba, Hitoshi Department of Frontier Informatics Graduate School of Frontier Sciences The University of Tokyo Japan Department of Computational Biology Graduate School of Frontier Sciences The University of Tokyo Japan Department of Electrical Engineering and Information Systems Graduate School of Engineering University of Tokyo Japan

In recent years, program evolution algorithms based on the estimation of distribution algorithm (EDA) have been proposed to improve search ability of genetic programming (GP) and to overcome GP-hard problems. One such method is the probabilistic prototype tree (PPT) based algorithm. The PPT based method explores the optimal tree structure by using the full tree whose number of child nodes is maximum among possible trees. This algorithm, however, suffers from problems arising from function nodes having different number of child nodes. These function nodes cause intron nodes, which do not affect the fitness function. Moreover, the function nodes having many child nodes increase the search space and the number of samples necessary for properly constructing the probabilistic model. In order to solve this problem, we propose binary encoding for PPT. In this article, we convert each function node to a subtree of binary nodes where the converted tree is correct in grammar. Our method reduces ineffectual search space, and the binary encoded tree is able to express the same tree structures as the original method. The effectiveness of the proposed method is demonstrated through the use of two computational experiments.

关键词： Genetic programming

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Tailored system architecture for design of S&T missions using DoDAF2.0

Tailored system architecture for design of S&T missions usin...

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IEEE Conference on Aerospace

作者： Nicholas Merski John Colombi DOD Space Test Program Space Development and Test Wing Space and Missile Systems Center NM USA Department of Systems and Engineering Management Air Force Institute of Technology OH USA

The use of systems architecture, following a set of integrated descriptions from an architecture framework, has been well codified in department of Defense acquisition and systems engineering. However, in the Space Science and Technology (S&T) community, this guidance and practice receives much less attention. This paper outlines an approach to embrace the new focus of DoD Architecture Framework 2.0 (DoDAF2.0), with an emphasis on data and support to acquisition decision analysis. After decomposing the Space S&T lifecycle into phases, design milestones and activities using process models, we then propose a set of lifecycle-matured models and Fit-for-Purpose views. Our approach makes DoDAF2.0 more relevant and integrated with S&T missions, as well as facilitates reuse with existing documentation.

关键词： Supply chains Supply chain management Costs Humans Space technology Manufacturing Space missions Technological innovation NASA Aerospace industry

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A network service platform providing stable QoS based on dynamic allocation of distributed components

A network service platform providing stable QoS based on dyn...

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2010 International Conference on Network and Service management, CNSM 2010

作者： Kinoshita, Kazuhiko Yokoe, Naosuke Hirota, Yusuke Tode, Hideki Murakami, Koso Department of Information Networking Graduate School of Information Science and Technology Osaka University 1-5 Yamadaoka Suita Osaka 565-0871 Japan Department of Computer Science and Intelligent Systems Graduate School of Engineering Osaka Prefecture University 1-1 Gakuencho Naka Sakai Osaka 599-8531 Japan

ISBN: (纸本)9781424489084

In this paper, we propose a new service platform which provides stable QoS by allocating components dynamically with considering fault-tolerance. We assume that many kinds of components are running on component servers and each component has its own SLA. The proposed platform achieves to make a load-balancing system to meet SLA of these components SLA and considering the number of replications necessary to offer a continuous service in case of failure. Finally, by implementation of its prototyping system, we confirm that the proposed platform is effective and feasible to provide the network services based on distributed components. © 2010 IEEE.

关键词： Fault tolerance

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