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EFFICIENT AND SECURE AUTONOMOUS SYSTEM BASED TRACEBACK

Journal of Interconnection Networks 2004年第2期5卷 151-164页

作者： ARJAN DURRESI VAMSI PARUCHURI LEONARD BAROLLI RAJGOPAL KANNAN S. S. IYENGAR Department of Computer Science Louisiana State University 298 Coates Hall Baton Rouge LA 70803 USA Department of Information and Communication Engineering Faculty of Information Engineering Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811-0295 Japan

The design of the IP protocol makes it difficult to reliably identify the originator of an IP packet, causing the defense against Distributed Denial of Service attacks to become one of the hardest problems on the Internet today. Previous solutions for this problem try to traceback to the exact origin of the attack by requiring every router's participation. For many reasons this requirement is impractical and the victim results with an approximate location of the attacker. Reconstruction of the whole path is also very difficult due to the sheer size of the Internet. This paper presents lightweight schemes for tracing back to the attack-originating AS instead to the exact origin itself. Once the attack-originating AS is determined, all further routers in the path to the attacker are within that AS and under the control of a single entity; which can presumably monitor local traffic in a more direct way than a generalized, Internet scale, packet marking scheme can. We furthermore, provide a scheme to prevent compromised routers from forging markings.

关键词： Traceback DDoS network security

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Pulse Laser Ignition of Preheated PETN

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AIP Conference Proceedings 2004年第1期706卷 1005-1008页

作者： K. Nagayama H. Ebisuzaki S. Kubota M. Nakahara 1Department of Aeronautics and Astronautics Faculty of Engineering Kyushu University Fukuoka 812‐8581 Japan 2Department of Earth Resources Engineering Faculty of Engineering Kyushu University Fukuoka 812‐8581 Japan 3Department of Computer and Communication Faculty of Engineering Fukuoka Institute of Technology Fukuoka811‐0295 Japan

Nd:YAG pulse laser was used to ignite powdered and preheated PETN. To enhance efficiency of laser absorption by PETN, it was mixed with a small amount of carbon black powder. In this study, we will propose two‐pulse laser ignition method, the first pulse is a long pulse to heat up PETN up to melting point, then second laser to ignite the heated PETN. By adopting this procedure, second short pulse laser energy can be reduced to ensure that the energy can be transferred by relatively slender plastic optical fiber. To simulate the slow laser heating process by long pulse laser, high‐power cw YAG laser up to 30W was used. While two ns‐YAG laser of about 200 mJ/pulse with 4 ns and 12 ns were used for ignition. Higher peak power with donut‐like profile laser beam of 4 ns duration gives damage to fibers, while lower peak power with relatively flat profile laser beam of 12 ns duration can safely pass through optical fiber of 1 mm diameter. We performed a series of melting experiments of PETN under normal optical microscope. From these experiments, the experimental conditions and time to the onset of PETN melting was determined. Then the ignition experiments were performed by choosing a delay time between two laser irradiation timing as a parameter. Shortest detonation delay was evidenced at the delay time close to the time that the PETN specimen is almost starting to melt.

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A collaborative filtering recommendation system based on market value functions

A collaborative filtering recommendation system based on mar...

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Proceedings of the International computer Congress 2004 on Wavelet Analysis and its Applications, and Active Media technology

作者： Huang, Jiajin Liu, Chunnian Zhong, Ning Yao, Y.Y. College of Computer Beijing University of Technology Beijing Munic. Key Lab. M./I.S.T. Beijing 100022 China Dept. of Information Engineering Maebashi Institute of Technology 460-1 Kamisadori-Cho Maebashi-City 371-0816 Japan Department of Computer Science University of Regina Regina Sask. S4S 0A2 Canada

ISBN: (纸本)981238961X

This paper presents a collaborative filtering recommendation system combined with market value functions. In the approach, by building market value function model for each item, we can produce a user rating information table. Then Collaborative Filtering algorithm can produce a list of recommended items. Experiment in real world examples shows that the method is effective.

关键词： computer supported cooperative work

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Altera Max Plus II development environment in fault simulation and test implementation of embedded cores-based sequential circuits

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2004年 3326卷 353-360页

作者： Das, Sunil R. Jin, Chuan Jin, Liwu Assaf, Mansour H. Petriu, Emil M. Sahinoglu, Mehmet School of Information Technology and Engineering Faculty of Engineering University of Ottawa Ottawa Ont. K1N 6N5 Canada Department of Computer and Information Science Troy State University Montgomery Montgomery AL 36103 United States

A Verilog HDL-based fault simulator for testing embedded cores-based synchronous sequential circuits is proposed in the paper to detect single stuck-line faults The simulator emulates a typical BIST (built-in self-testing) environment with test pattern generator that sends its outputs to a CUT (circuit under test) and the output streams from the CUT are fed into a response data analyzer. The fault simulator is suitable for testing sequential circuits described in Verilog HDL. The subject paper describes in detail the architecture and applications of the fault simulator along with the models of sequential elements used. Results on some simulation experiments on ISCAS 89 full-scan sequential benchmark circuits are also provided. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Timing circuits

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Conditions for resolving observability problems in distributed testing

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24th IFIP WG 6.1 International Conference on Formal Techniques for Networked and Distributed Systems, FORTE 2004

作者： Chen, Jessica Hierons, Robert M. Ural, Hasan School of Computer Science University of Windsor WindsorONN9B 3P4 Canada Department of Information Systems and Computing Brunel University Uxbridge MiddlesexUB8 3PH United Kingdom School of Information Technology and Engineering University of Ottawa OttawaONK1N 6N5 Canada

ISBN: (纸本)3540232524

Controllability and observability problems may manifest themselves during the application of a test or checking sequence in a test architecture where there are multiple remote testers. These problems often require the use of external coordination message exchanges among testers during testing. It is desired to construct a test or checking sequence from the specification of the system under test such that it will be free from these problems without requiring the use of external coordination messages. This paper investigates conditions that allow us to construct such a test or checking sequence. For specifications satisfying these conditions, procedures for constructing subsequences that eliminate the need for using external coordination messages are given. © IFIP International Federation for information Processing 2004.

关键词： Specifications

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A GA-based multi-purpose optimization algorithm for QoS routing

A GA-based multi-purpose optimization algorithm for QoS rout...

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Proceedings - 18th International Conference on Advanced information Networking and Applications, AINA 2004

作者： Koyama, Akio Barolli, Leonard Matsumoto, Kazunori Apduhan, Bernady O. Department of Informatics Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan Dept. of Information Engineering Fukuoka Institute of Technology 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811-0295 Japan Department of Computer Software University of Aizu Tsuruga Ikki-machi Aizu-Wakamatsu 965-8580 Fukushima Japan Dept. of Intelligent Informatics Kyushu Sangyo University 2-3-1 Matsukadai Higashi-ku Fukuoka 813-8503 Japan

ISBN: (纸本)0769520510

The routing algorithms for multimedia communication should use for routing more than one QoS parameter. This is because new services such as video on demand and remote meeting systems require better QoS. However, the problem of QoS routing is difficult and to find a feasible route with two independent path constraints is NP-complete. Also, QoS routing algorithms for broadband networks must be adaptive, flexible, and intelligent for efficient network management. In this paper, we propose a multipurpose optimization method for QoS routing based on Genetic Algorithm (GA). The simulation results show that proposed method has a good performance and is a promising method for QoS routing.

关键词： Routers

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AN EFFICIENT MULTI-PURPOSE OPTIMIZATION METHOD FOR QOS ROUTING USING GENETIC ALGORITHM

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Journal of Interconnection Networks 2004年第4期5卷 409-428页

作者： AKIO KOYAMA LEONARD BAROLLI GENCI CAPI BERNADY O. APDUHAN JUNPEI ARAI ARJAN DURRESI Department of Informatics Yamagata University 4-3-16 Jonan Yonezawa Yamagata 992-8510 Japan Department of Information and Communication Engineering Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811- 0295 Japan Department of System Management Fukuoka Institute of Technology (FIT) 3-30-1 Wajiro-Higashi Higashi-ku Fukuoka 811-0295 Japan Department of Intelligent Informatics Kyushu Sangyo University 2-3-1 Matsukadai Higashi-ku Fukuoka 813-8503 Japan Department of Information and Control Engineering Yamagata College of Industry and Technology 1-2-2 Matsuei Yamagata 990-2473 Japan Department of Computer Science Louisiana State University Baton Rouge LA 70803 USA

In order to support multimedia communication, it is necessary to develop routing algorithms that make decisions based on multiple Quality of Service (QoS) parameters. This is because new services such as video on demand and remote meeting systems have multiple QoS requirements. However, the problem of QoS routing is difficult because finding a feasible route with two independent path constraints is NP-complete problem. Also, QoS routing algorithms for broadband networks must be adaptive, flexible, and intelligent for efficient network management. In this paper, we propose a multi-purpose optimization method for QoS routing based on Genetic Algorithm (GA). The simulation results show that the proposed method has a good performance and therefore is a promising method for QoS routing.

关键词： Broadband Networks Genetic Algorithm QoS Routing Multi-purpose Optimization

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Highly reliable stochastic perceptual watermarking model based on multiwavelet transform

Highly reliable stochastic perceptual watermarking model bas...

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2nd International Workshop on Digital Watermarking, IWDW 2003

作者： Kwon, Ki-Ryong Park, Ji-Hwan Lee, Eung-Joo Tewfik, Ahmed H. Department of Electronic and Computer Engineering Pusan University of Foreign Studies 55-1 Uam-dong Nam-gu Pusan608-738 Korea Republic of Division of Electronic and Telecom. Engineering Pukyung National University 55-9 Daeyun-dong Nam-gu Pusan608-810 Korea Republic of Dept. of Information/Comm. Eng Tongmyong University of Information Technology Pusan608-711 Korea Republic of Dept. of Electrical and Computer Engineering University of Minnesota 4-174 EE/CSci Building 200 Union Street S.E MinneapolisMN55455 United States

ISBN: (纸本)354021061X

This paper presents highly reliable adaptive image watermark embedding using a stochastic perceptual model based on multiwavelet transform. To embedding watermark, the original image is decomposed into 4 levels using a discrete multiwavelet transform, then a watermark is embedded into the only JND (just noticeable differences) of the image each subband. The perceptual model is applied with a stochastic multiresolution model for watermark embedding. This is based on the computation of a NVF (noise visibility function) that have local image properties. The perceptual model that has adaptive image watermarking algorithm embed at the texture and edge region for more strongly embedded watermark by the JND. This method uses not only stationary GG (Generalized Gaussian) model characteristic but also nonstationary JND model because watermark has noise properties. The experiment results of simulation of the proposed watermark embedding method using stochastic perceptual model based on multiwavelet transform techniques was found to be excellent invisibility and robustness more than Podilchuk’s algorithm. © Springer-Verlag Berlin Heidelberg 2004.

关键词： Stochastic systems

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Scalable packet classification through maximum entropy hashing

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2004年 3042卷 296-307页

作者： Choi, Lynn Heo, Jaesung Kim, Hyogon Joung, Jinoo Kim, Sunil Department of Electronics and Computer Engineering Korea University Anam-Dong Sungbuk-Ku Seoul Korea Republic of I-networking Laboratory Samsung Advanced Institute of Technology Giheung-Eup Yongin-Shi Gyeonggi-Do Korea Republic of School of Information and Computer Engineering Hongik University 72-1 Sangsu-Dong Mapo-Gu Seoul Korea Republic of

ISBN: (纸本)9783540246930

In this paper we propose a new packet classification algorithm, which can substantially improve the performance of a classifier by decreasing the rulebase lookup latency. The algorithm hierarchically partitions the rulebase into smaller independent sub-rulebases by employing hashing. By using the same hash key used in the partitioning a classifier only needs to look up the relevant sub-rulebase to which an incoming packet belongs. For an optimal partitioning of rulebases, we apply the notion of maximum entropy to the hash key selection. We performed the detailed simulations of our proposed algorithm on synthetic rulebases of size 1K to 500K entries using real packet traces. The results show that the algorithm can significantly outperform existing classifiers by reducing the size of a rulebase by more than four orders of magnitude with just two-levels of partitioning. Both the space and time complexity of the algorithm exhibit linearity in terms of the size of a rulebase, suggesting a good scalable solution for the packet classification with a large rulebase. © IFIP International Federation for information Processing 2004.

关键词： Entropy

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CONCEPT CELL MODEL FOR KNOWLEDGE REPRESENTATION

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International Journal of information Acquisition 2004年第2期1卷 149-168页

作者： JEFFREY Z. J. ZHENG CHRISTIAN H. H. ZHENG TOSIYASU L. KUNII Department of Information Security School of Software Yunnan University Kunming Yunnan P. R. China Conjugate Systems (Kunming) Limited Company Kunming Yunnan P. R. China Conjugate Systems Pty Ltd 45 Greenways Rd Glen Waverley Victoria 3150 Australia Department of Computer and Information Engineering Graduate School of Engineering Kanazawa Institute of Technology 1-15-13 Jingumae Shibuya-ku Tokyo 150-0001 Japan

This paper proposes a unified knowledge model establishing a core structure of knowledge representation in natural and artificial intelligence systems. The Concept Cell Model proposes the use of acyclic lattices to model a concept formed from a knowledge network of simpler concepts. Declarative and procedural knowledge are explicitly defined as the time-invariant and time-variant relationship of concepts. Examples of a Restaurant Servicing Concept Cell and an extended Shopping Complex Concept Cell are used to demonstrate the functionality of this model. Major existing theoretic and engineering Ontology knowledge schools are compared under this framework.

关键词： Knowledge model ontology concept cell knowledge representation

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