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IEEE International Conference on Cluster Computing

作者： Hiroko Midorikawa Motoyoshi Kurokawa Ryutaro Himeno Mitsuhisa Sato Department of Computer and Information Science Seikei University Musashino Tokyo Japan Graduate School of Systems and Information Engineering University of Tsukuba Tennodai Tsukuba Ibaraki Japan Advanced Center of Computing and Communication Wako Saitama Japan Research Program for Computational Science RIKEN Wako Saitama Japan

Emerging 64 bitOSpsilas supply a huge amount of memory address space that is essential for new applications using very large data. It is expected that the memory in connected nodes can be used to store swapped pages efficiently, especially in a dedicated cluster which has a high-speed network such as 10 GbE and Infiniband. In this paper, we propose the distributed large memory system (DLM), which provides very large virtual memory by using remote memory distributed over the nodes in a cluster. The performance of DLM programs using remote memory is compared to ordinary programs using local memory. The results of STREAM, NPB and Himeno benchmarks show that the DLM achieves better performance than other remote paging schemes using a block swap device to access remote memory. In addition to performance, DLM offers the advantages of easy availability and high portability, because it is a user-level software without the need for special hardware. To obtain high performance, the DLM can tune its parameters independently from kernel swap parameters. We also found that DLMpsilas independence of kernel swapping provides more stable behavior.

关键词： Kernel Arrays Memory management Servers Bandwidth Performance evaluation Benchmark testing

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Proceedings of the 2008 MidSouth Computational Biology and Bioinformatics Society (MCBIOS) Conference

Proceedings of the 2008 MidSouth Computational Biology and B...

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作者： Wren, Jonathan D. Wilkins, Dawn Fuscoe, James C. Bridges, Susan Winters-Hilt, Stephen Gusev, Yuriy Arthritis and Immunology Research Program Oklahoma Medical Research Foundation 825 N.E. 13th Street Oklahoma City OK 73104-5005 United States Computer and Information Science Department The University of Mississippi University MS 38677 United States Center for Functional Genomics Division of Systems Toxicology National Center for Toxicological Research Jefferson AR 72079 United States Department of Computer Science and Engineering Mississippi State University Box 9637 Mississippi State MS 39762 United States Department of Computer Science University of New Orleans The Research Institute for Children 200 Henry Clay Ave. New Orleans LA 70118 United States Department of Surgery Health Sciences Center The University of Oklahoma Oklahoma City OK 73104 United States

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Analysis of Security Vulnerabilities and Countermeasures of Ethernet Passive Optical Network(EPON)

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China Communications 2007年第3期4卷 17-29页

作者： Stamatios V.Kartalopoulos Pramode K.Verma School of Electrical and Computer Engineering Telecommunications Systems Program University of Oklahoma-Tulsa Tulsa OK 74135 USA

Ethernet-based Passive Optical Network(EPON) is considered a very promising solution for the first mile problem of the next generation *** to its particular characteristic of shared media structure,EPON suffers many security vulnerabilities. Communication security must be guaranteed when EPON is applied in *** paper gives a general introduction to the EPON system,analyzes the potential threats and attacks pertaining to the EPON system,and presents effective countermea-sures against these threats and attacks with emphasis on the authentication protocols and key distribution.

关键词： EPON security vulnerabilities attacks countermeasures authentication protocols key distribution

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Automated evaluation of HER-2/neu immunohistochemical expression in breast cancer using digital microscopy

Automated evaluation of HER-2/neu immunohistochemical expres...

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IEEE International Symposium on Biomedical Imaging

作者： Marios A. Gavrielides Hela Masmoudi Nicholas Petrick Kyle J. Myers Stephen M. Hewitt Center for Devices and Radiological Health CDRH Laboratory for the Assessment of Medical Imaging Systems U.S Food and Drug Administration National Institute of Biomedical Imaging and BioEngineering Silver Spring MD USA U.S Food and Drug Administration Laboratory for the Assessment of Medical Imaging Systems Silver Spring MD U.S.A Department of Electrical and Computer Engineering The George Washington University Washington DC U.S.A Tissue Array Research Program National Institutes of Health MD U.S.A

HER-2/neu (HER2) has been shown to be a valuable biomarker for breast cancer. However, inter-observer variability has been reported in the evaluation of HER2 with immunohistochemistry. It has been suggested that automated computer-based evaluation can provide a consistent and objective measure of HER2 expression. In this manuscript, we present an automated method for the quantitative assessment of HER2 using digital microscopy. The method employs imaging algorithms on whole slide images of tissue specimens for the extraction of two features describing HER2 membrane staining, namely membrane staining completeness and membrane staining intensity. A classifier was trained to merge the extracted features into an overall slide assessment score. Preliminary results showed good agreement with the provided truth. The developed automated method has the potential to be used as a computer aid for the immunohistochemical evaluation of HER2 expression with the objective of increasing observer reproducibility.

关键词： Breast cancer Microscopy Biomembranes Immune system Biomarkers Medical treatment Biomedical imaging Clustering algorithms Cells (biology) Feature extraction

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Analytical model for burstification latency in optical burst switched networks

Analytical model for burstification latency in optical burst...

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作者： Chen, Yuhua Verma, Pramode K. Dept. of Electrical and Computer Engineering University of Houston United States Telecommunications Systems Program University of Oklahoma Tulsa United States

In Optical Burst Switched (OBS) networks, packets are assembled into bursts at ingress edge routers and disassembled at egress edge routers. This letter presents an analytical model to quantify the burstification latency in the OBS networks. To the authors' best knowledge, this letter is the first one to address the latency issue in OBS in a comprehensive manner analytically. The results allow us to quantitatively understand how OBS network parameters such as maximum burst length and maximum timeout affect the packet latency in the OBS networks. We show that the burstification latency in the OBS network is bounded and can be tuned by setting the system parameters under latency constraints. Copyright © 2007 The Institute of Electronics, Information and Communication Engineers.

关键词： Optical burst switching

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Securing optical burst switched networks

Securing optical burst switched networks

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7th IASTED International Conferences on Wireless and Optical Communications, WOC 2007

作者： Chen, Yuhua Verma, Pramode K. Department of Electrical and Computer Engineering University of Houston Houston TX 77204-4005 United States Telecommunications Systems Program School of Electrical and Computer Engineering University of Oklahoma - Tulsa Tulsa OK 74135 United States

ISBN: (纸本)9780889866591

Optical Burst Switching (OBS) allows variable size data bursts to be transported directly over DWDM links without encountering O/E/O conversion. This paper identifies potential threats to security in OBS networks. To alleviate the security threats, we propose a Secured Optical Burst Switching (S-OBS) framework that, for the first time, brings security measures to the OBS networks. The contributions of the paper are summarized as follows: 1) This is the first paper that identifies the potential security problems in OBS networks;2) We have proposed a security framework for OBS networks;3) We have proposed two levels of security measures to be incorporated into OBS networks, namely, authentication of burst headers and confidentiality of data bursts;4) We have examined the candidate solutions in each category, and suggested the solutions that are well suited to OBS networks.

关键词： Cryptography

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Converting engineering faculty to educators of entrepreneurs

Converting engineering faculty to educators of entrepreneurs

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114th Annual ASEE Conference and Exposition, 2007

作者： Gassert, John D. Blessing, Jeffrey Schmedeman, Larry Fennigkoh, Larry Milwaukee School of Engineering United States AIMBE United States IEEE ABET EAC Program Management Information Systems Program Milwaukee School of Engineering United States United States Association for Computing Machinery Computer Society Rader School of Business Milwaukee School of Engineering United States MSOE's Biomedical Engineering Program

Including concepts of entrepreneurship in an engineering education is nothing new. It would be difficult to find a university that does not offer several courses or specific programs in entrepreneurship. However, finding large numbers of engineering programs that have fully incorporated entrepreneurship into their undergraduate engineering curricula is a far greater challenge. With the growth of outsourcing and global competition, it is imperative that engineering faculty be more than just educators of technically competent engineers. It is important that they be educators of entrepreneurs. This paper will describe a workshop that took initial steps to convince engineering faculty of the importance of educating engineering entrepreneurs and integrating entrepreneurship into an engineering curriculum. It will describe the workshop agenda, the assessment process used to measure if there was a change in faculty attitude, and the preliminary assessment results. © American Society for engineering Education, 2007.

关键词： engineering education

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Integrating entrepreneurship into an already ambitious curricula through a collaboration of business and engineering programs

Integrating entrepreneurship into an already ambitious curri...

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114th Annual ASEE Conference and Exposition, 2007

作者： Blessing, Jeffrey Gassert, John D. Schmedeman, Lawrence J. Fennigkoh, Larry Milwaukee School of Engineering United States Management Information Systems Program Milwaukee School of Engineering United States United States Association for Computing Machinery IEEE Computer Society AIMBE United States IEEE ABET EAC Program Rader School of Business Milwaukee School of Engineering United States International Business Bacheloriate Program MSOE's Biomedical Engineering Program MSOE United States

Since October 2005, the business and engineering faculties of the Milwaukee School of engineering (MSOE) have been working on a novel effort to integrate entrepreneurship into the engineering curricula. Our methods bring together business and engineering students, two groups that normally do not interact in their course of study, to work together on a team design project. The challenge is to introduce entrepreneurship education without significantly increasing the workload on faculty and students. With the help of a grant from the Kern Entrepreneurship Education Network (KEEN) and the National Collegiate Inventors and Innovators Alliance (NCIIA), MSOE will offer entrepreneurship education to engineering students by formally integrating business topics into already ambitious business and engineering programs. In this paper, we present the joint findings and progress of the engineering college and the business school to develop an entrepreneurial spirit on our campus. © American Society for engineering Education, 2007.

关键词： Curricula

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Generalized evidence pre-propagated importance sampling for hybrid bayesian networks

Generalized evidence pre-propagated importance sampling for ...

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AAAI-07/IAAI-07 Proceedings: 22nd AAAI Conference on Artificial Intelligence and the 19th Innovative Applications of Artificial Intelligence Conference

作者： Yuan, Changhe Druzdzel, Marek J. Department of Computer Science and Engineering Mississippi State University Mississippi State MS 39762 Intelligent Systems Program School of Information Sciences University of Pittsburgh Pittsburgh PA 15260

ISBN: (纸本)1577353234

In this paper, we first provide a new theoretical understanding of the Evidence Pre-propagated Importance Sampling algorithm (EPIS-BN) (Yuan & Druzdzel 2003;2006b) and show that its importance function minimizes the KL-divergence between the function itself and the exact posterior probability distribution in Polytrees. We then generalize the method to deal with inference in general hybrid Bayesian networks consisting of deterministic equations and arbitrary probability distributions. Using a novel technique called soft arc reversal, the new algorithm can also handle evidential reasoning with observed deterministic variables. Copyright © 2007, Association for the Advancement of Artificial Intelligence (***). All rights reserved.

关键词： Bayesian networks

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Importance sampling for general hybrid Bayesian networks

Importance sampling for general hybrid Bayesian networks

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11th International Conference on Artificial Intelligence and Statistics, AISTATS 2007

作者： Yuan, Changhe Druzdzel, Marek J. Department of Computer Science and Engineering Mississippi State University Mississippi State MS 39762 United States Decision Systems Laboratory School of Information Sciences and Intelligent Systems Program University of Pittsburgh Pittsburgh PA 15260 United States

Some real problems are more naturally modeled by hybrid Bayesian networks that consist of mixtures of continuous and discrete variables with their interactions described by equations and continuous probability distributions. However, inference in such general hybrid models is hard. Therefore, existing approaches either only deal with special instances, such as Conditional Linear Gaussians (CLGs), or approximate a general model with a restricted version and then perform inference on the simpler model. However, results thus obtained highly depend on the quality of the approximations. This paper describes an importance sampling-based algorithm that directly deals with hybrid Bayesian networks constructed in the most general settings and guarantees to converge to the correct answers given enough time.

关键词： Importance sampling

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