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Relation of PPAtMP and scalar product protocol and their applications

Relation of PPAtMP and scalar product protocol and their app...

引用

15th IEEE Symposium on computers and Communications, ISCC 2010

作者： Zhu, Youwen Huang, Liusheng Yang, Wei National High Performance Computing Center at Hefei Department of Computer Science and Technology University of Science and Technology of China Hefei 230026 China Suzhou Institute for Advanced Study University of Science and Technology of China Suzhou 215123 China

ISBN: (纸本)9781424477555

Scalar product protocol and privacy preserving add to multiply protocol (PPAtMP) are two significant basic secure multiparty computation protocols. In this paper, we claim that the two protocols are equivalent to each other and we can achieve one based on the other with the same communication and computation complexity. Then, we propose Secure Two-party Mean Protocol, Secure Shared x ln x Protocol and Secure Shared Generic Polynomial Protocol based on scalar product protocol and PPAtMP. Additionally, we analyze the correctness, security, communication overheads and computation complexity of each protocol proposed in this paper. © 2010 IEEE.

关键词： Data privacy

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Towards garbage collection mechanism for RTSJ-oriented embedded Java Processor

Towards garbage collection mechanism for RTSJ-oriented embed...

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10th IEEE International Conference on computer and Information Technology, CIT-2010, 7th IEEE International Conference on Embedded Software and Systems, ICESS-2010, 10th IEEE Int. Conf. Scalable computing and Communications, ScalCom-2010

作者： Hu, Guang Chai, Zhilei Zhao, Wenke Tu, Shiliang Department of Computer Science Shanghai International Studies University Shanghai China Department of Computer Science and Engineering Fudan University Shanghai China Siemens Corporate Technology Beijing China Center of Intelligent and High Performance Computing School of Information Technology Jiangnan University Wuxi China

ISBN: (纸本)9780769541082

Currently, Java has been gradually applied in embedded real-time area with the improvement by the Real-Time Specification for Java (RTSJ). Accordingly, a hardware Java execution engine for embedded real-time applications, JPOR-32 (32-bit Java Processor Optimized for RTSJ), is designed. Taking JPOR-32 for an example, this paper presents the garbage collection mechanism for RTSJ-oriented embedded processor in detail. JPOR-32 provides effective architectural support for garbage collection. And the object reference format of JPOR-32 provides supports for objects tracing and heap scanning. The support for write barrier of real-time concurrent GC is also performed. Moreover, JPOR- 32 provides optimized instruction level support for garbage collection. In addition, different garbage collection algorithms are compared on the base of the resource-constrained feature and the real-time requirement of the processor, and the hybrid garbage collectors are suggested. © 2010 IEEE.

关键词： Refuse collection

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Design of virtual honeynet collaboration system in existing security research networks

Design of virtual honeynet collaboration system in existing ...

引用

IEEE International Symposium on Communications and Information Technology

作者： Chang, Jason Chih-Hung Tsai, Yi-Lang CyberSecurity Lab. National Center for High-performance Computing Hsinchu Taiwan SENSE Lab. Department of Computer Science National Chiao Tung University Hsinchu Taiwan

ISBN: (纸本)9781424470105

This paper proposes the virtual honeynet collaboration system (VHS) to improve the designs and concepts of the honeynet architectures. Using virtualization technologies (VTs) as a development platform, the proposed approach combines honeynet technologies to develop a new virtual honeynet architecture that implements VHS. This study also proposes the honeypot redirect-outbound (HRO) algorithm and the honeypot redirect-inbound (HRI) algorithm to solve the problems of honeypot module (HM) parallelism operation and bypass security module (SM) issues. Using a modular design concept, each module can be customized according to different needs, making the VHS superior to the conventional, modified, and hybrid honeynet design. ©2010 IEEE.

关键词： Network architecture

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Impact of sub-optimal checkpoint intervals on application efficiency in computational clusters 10

Impact of sub-optimal checkpoint intervals on application ef...

引用

Proceedings of the 19th ACM International Symposium on High Performance Distributed computing

作者： Jones, William M. Daly, John T. DeBardeleben, Nathan Department of Computer Science Coastal Carolina University Conway SC United States Center for Exceptional Computing Department of Defense Fort Meade MD United States High Performance Computing Los Alamos National Laboratory Los Alamos NM United States

ISBN: (纸本)9781605589428

As computational clusters rapidly grow in both size and complexity, system reliability and, in particular, application resilience have become increasingly important factors to consider in maintaining efficiency and providing improved computational performance over predecessor systems. One commonly used mechanism for providing application fault tolerance in parallel systems is the use of checkpointing. By making use of a multi-cluster simulator, we study the impact of sub-optimal checkpoint intervals on overall application efficiency. By using a model of a 1926 node cluster and workload statistics from Los Alamos National Laboratory to parameterize the simulator, we find that dramatically over-estimating the AMTTI has a fairly minor impact on application efficiency while potentially having a much more severe impact on user-centric performance metrics such a queueing delay. We compare and contrast these results with the trends predicted by an analytical model. Copyright 2010 ACM.

关键词： Fault tolerance

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A network management system based on DPI

A network management system based on DPI

引用

International Conference on Network-Based Information Systems

作者： Yang, Chu-Sing Liao, Ming-Yi Luo, Mon-Yen Wang, Shin-Min Yeh, C. Eugene Department of Electrical Engineering Institute of Computer and Communication Engineering National Cheng Kung University Taiwan Department of Computer Science and Information Engineering National Kaohsiung University of Applied Sciences Kaohsiung Taiwan National Center for High-Performance Computing Taiwan

ISBN: (纸本)9780769541679

More and more network applications have appeared in recent years. Government, university, industry and individual Internet users and network services need more bandwidth and various network applications. Many new network protocols are proposed so that it is now becoming harder to manage the network. In the conditional network, every network protocol uses the fixed port, the so-called well-known port number. In the past, it was easy to classify and manage the network traffic because we could identify the network service by the port number. However, new types of network applications do not use fixed port number. The method of traffic classification with fixed port number is inadequate. In recent years, the DPI (Deep Packet Inspection) is used to classify the traffic. This study deploys a NMS (network management system) based on DPI and SNMP. The NMS controls the network devices and services according to the traffic classification of DPIS (DPI server). The platform of DPIS is implemented on the Netfilter framework in Linux kernel. © 2010 IEEE.

关键词： Network management

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引用

International Conference on computer science & Education (ICCSE)

作者： Cui, Jie Huang, Liusheng Zhong, Hong Yang, Wei National High Performance Computing Center at Hefei Department of Computer Science and Technology University of Science and Technology of China Hefei 230027 China School of Computer Science and Technology Anhui University Hefei 230039 China Suzhou Institute for Advanced Study University of Science and Technology of China Suzhou 215123 China

ISBN: (纸本)9781424460052

In this paper the authors present an attack on 7-round AES-128/256 to improve the known cryptanalysis by changing the order of round transformation , using the alternative representation of the round keys, exploiting the relationship of keys, designing the key difference pattern properly. By using the improved attack method, the complexity is reduced from 2192 to 2104 with 272 chosen plaintexts, the authors reduce complexity to 288 using partial sums. ©2010 IEEE.

关键词： 7-round AES-128/256 AES Rijndael Square attack cryptanalysis partial sums public key cryptography related key attack method related-key attack round transformation

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Measuring the effect of intervening early for academically at risk students in a CS1 course

Measuring the effect of intervening early for academically a...

引用

2010 ASEE Annual Conference and Exposition

作者： Punch, William Enbody, Richard McDonough, Colleen Sticklen, Jon Department of Computer Science Michigan State's High Performance Computing Center Michigan State University United States Department of Computer Science and Engineering Michigan State University United States College of Engineering Michigan State University United States Center for Engineering Education Research Michigan State University United States

We recently converted a CS1 (Introduction to computing) class to use the Python language in place of C++. Among other reasons, we hoped that the new language would help students who typically struggled with the course. Our typical drop+fail rate was around 25%-30% for C++, and we hoped the conversion would reduce this number. Though it did reduce slightly, 15%-25%, it was not as significant as we had hoped. We therefore tried an early intervention strategy to help those students whom we could identify as struggling. We provided extra tutoring for only those students. We then calculated statistics on the effects this extra tutoring. The results were not good: we found no significant difference between the group of students who used the tutoring and those that did not. We review some of the potential reasons for this result. © American Society for Engineering Education, 2010.

关键词： Students

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Using web-scale N-grams to improve base NP parsing performance

Using web-scale N-grams to improve base NP parsing performan...

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23rd International Conference on Computational Linguistics, Coling 2010

作者： Pitler, Emily Bergsma, Shane Lin, Dekang Church, Kenneth Computer and Information Science University of Pennsylvania United States Department of Computing Science University of Alberta Canada Google Inc. United States Human Language Technology Center of Excellence Johns Hopkins University United States

We use web-scale N-grams in a base NP parser that correctly analyzes 95.4% of the base NPs in natural text. Web-scale data improves performance. That is, there is no data like more data. Performance scales log-linearly with the number of parameters in the model (the number of unique N-grams). The web-scale N-grams are particularly helpful in harder cases, such as NPs that contain conjunctions.

关键词： Computational linguistics

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Learning without coding

Learning without coding

引用

21st International Conference on Algorithmic Learning Theory, ALT 2010

作者： Moelius III, Samuel E. Zilles, Sandra IDA Center for Computing Sciences 17100 Science Drive Bowie MD 20715-4300 United States Department of Computer Science University of Regina Regina SK S4S 0A2 Canada

ISBN: (纸本)3642161073

Iterative learning is a model of language learning from positive data, due to Wiehagen. When compared to a learner in Gold's original model of language learning from positive data, an iterative learner can be thought of as memory-limited. However, an iterative learner can memorize some input elements by coding them into the syntax of its hypotheses. A main concern of this paper is: to what extent are such coding tricks necessary? One means of preventing some such coding tricks is to require that the hypothesis space used be free of redundancy, i.e., that it be 1-1. By extending a result of Lange & Zeugmann, we show that many interesting and non-trivial classes of languages can be iteratively identified in this manner. On the other hand, we show that there exists a class of languages that cannot be iteratively identified using any 1-1 effective numbering as the hypothesis space. We also consider an iterative-like learning model in which the computational component of the learner is modeled as an enumeration operator, as opposed to a partial computable function. In this new model, there are no hypotheses, and, thus, no syntax in which the learner can encode what elements it has or has not yet seen. We show that there exists a class of languages that can be identified under this new model, but that cannot be iteratively identified. On the other hand, we show that there exists a class of languages that cannot be identified under this new model, but that can be iteratively identified using a Friedberg numbering as the hypothesis space. © 2010 Springer-Verlag.

关键词： Iterative methods

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Facial image processing for facial analysis

Facial image processing for facial analysis

引用

International Carnahan Conference on Security Technology

作者： Moi Hoon Yap Hassan Ugail Reyer Zwiggelaar Bashar Rajoub Centre of Visual Computing University of Bradford Bradford West Yorkshire UK Department of Computer Science Aberystwyth University Aberystwyth UK

This paper discusses a methodology for improved image processing for human facial analysis and tries to integrate results from the visible images with the corresponding thermal images. First, an enhanced face detection algorithm in color images is described. The performance of Haar Classifiers is known as a fast real-time face detection algorithm. However, it generates false detection. The suggested solution in previous research is to increase the training set. The proposed solution in this paper is to pre-process the color images by implementing color segmentation in Chrominance component and Hue component prior to face detection algorithm. Datasets from different resources are tested and the experimental results produced suggested that this approach increases the detection rate and reduces the false detection rate in some datasets, but not for all. The performances from these datasets are compared and the possible future implementation is discussed. Further, the detection is extended to eyes, nose, and mouth detection. The second contribution of this paper is to establish a link between the visible images and thermal image. The method of applying visible image information to locate the face features in thermal image is illustrated. Finally, some possible future implementation of the results of the facial analysis within the domain of security is discussed.

关键词： Face Image color analysis Skin Face detection Image segmentation visualization Nose

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