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EMP-DSR: An Enhanced Multi-path Dynamic Source Routing Algorithm for MANETs Based on Ant Colony Optimization

EMP-DSR: An Enhanced Multi-path Dynamic Source Routing Algor...

引用

Asia International Conference on Modeling & Simulation

作者： Ehsan Khosrowshahi Asl Morteza Damanafshan Maghsoud Abbaspour Majid Noorhosseini Kamran Shekoufandeh Computer Engineering and IT Department Amirkabir University of Technology슠 Tehran Iran IPM Network Department Tehran Iran Institute for Research in Fundamental Sciences Tehran Tehran IR

Routing in MANETs becomes a more sophisticated issue especially when a certain QoS requirement is to be satisfied. One of the most important QoS metrics is end-to-end reliability. Multi-path routing can be considered as an effective method to support end-to-end reliability. However, the path discovery in current multi-path routing algorithms considering reliability relies mostly on local link availability information at intermediate nodes to perform the route request message forwarding. Selecting a reliable link at an intermediate node solely based on local information may not necessarily lead to finding a satisfactory reliable end-to-end path. To mitigate this problem, in this paper we have proposed an enhanced multi-path dynamic source routing algorithm (EMP-DSR) which is an enhanced version of MP-DSR. The proposed method uses an ant-colony optimization method to provide global information. The simulation results show that the EMP-DSR outperforms MP-DSR both in finding reliable paths and end-to-end delay with a little tolerable overhead.

关键词： Heuristic algorithms Ant colony optimization Availability computer networks Optimization methods Routing protocols Asia Computational modeling computer simulation Reliability engineering

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Efficient Schnorr Type Identity-Based Blind Signatures from Bilinear Pairings

Efficient Schnorr Type Identity-Based Blind Signatures from ...

引用

computer Science and Information engineering, CSIE, WRI World Congress on FLAGGED

作者： Zhenjie Huang Qunshan Chen Rufen Huang Xuanzhi Lin Key Laboratory of Network Security and Cryptology Fujian Normal University Fuzhou China Department of Computer Science and Engineering Zhangzhou Normal University Zhengzhou China

Identity-based cryptosystem has a property that a user's public key can be easily calculated from his identity by a publicly available function, and can be hence a good alternative for certificate-based public key infrastructure. Blind signature has the anonymity and plays a central role in applications such as electronic voting and electronic cash systems. In this paper, we propose three efficient Schnorr type identity-based blind signature schemes based on bilinear pairings. Efficiency analysis shows that our schemes are far more efficient than Zhang and Kimpsilas schemes in Asiacrypt 2002 and in ACISP 2003.

关键词： Public key Identity-based encryption Public key cryptography computer science Electronic voting Blindness Information security Identity management systems Cryptographic protocols Digital signatures

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A Hybrid Algorithm for Partner Selection in Market Oriented Cloud Computing

A Hybrid Algorithm for Partner Selection in Market Oriented ...

引用

International Conference on Management and Service Science, MASS

作者： Biao Song M. M. Hassan Eui-Nam Huh Chang-Woo Yoon Hyun-Woo Lee Internet Computing and Network Security Laboratory Department of Computer Engineering Kyung Hee University South Korea Electronics and Telecommunications Research Institute South Korea

In our previous paper, we proposed a novel combinatorial auction (CA) based cloud market model for trading services that allows cloud providers (CPs) to make groups and submit their bids collaboratively as a single bid for winning the auction. But to find a good combination of CP partners and make groups is a NP-hard problem. Since each provider only has limited information about other providers, past collaborative task information (i.e. no. of times collaboratively win the auctions, failed to make groups, etc.) needs to be analyzed and utilized for partner selection. We call it multi-task and multi-objective optimization problem. To solve this problem, in this paper, we propose a hybrid algorithm that utilizes artificial neural network (ANN) for gathering and analyzing information about previous tasks and then uses multi-objective genetic algorithm (MOGA) to solve the partner selection problem. Simulation results show that our proposed algorithm is effective.

关键词： Cloud computing Artificial neural networks Collaboration computer networks Information analysis Electronic mail Algorithm design and analysis Genetic algorithms Neural networks IP networks

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An improved Outlier Detection Method in high-dimension Based on Weighted Hypergraph 2nd

An improved Outlier Detection Method in high-dimension Based...

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Second International Symposium on Electronic Commerce and Security(第二届电子商务与安全国际研究大会)(ISECS 2009)

作者： ChangZhen Hu YinZhao Li Di Wu JiaDong Ren Lab of Computer Network Defense Technology Beijing Institute of Technology Beijing 100081 China Department of Information and Electronic Engineering Hebei University of Engineering Handan 056038 College of Information Science and Engineering Yanshan University Qinhuangdao 066004 China School o

ISBN: (纸本)9781424442843

Outlier detection in high-dimensional space is a hot topic in data mining, the main goal is to find out a small quantity of data objects with abnormal behavior in data set. In this paper, the concepts of the feature vector and the attribute similarity are defined, an improved algorithm SW HOT based on weighed hypergraph model for outlier detection in high dimensional space is presented. The objects in high dimensional space are translated into binary data type, by looking for the hyperedge of binary set, the data set hypergarph model is established, meanwhile, the weight of the hyperedge is equal to the value of the attribute similarity. In addition, the objects of the hypergraph are clustered by CURE algorithm, arbitrary shaped clusters can be identified. Furthermore, the outliers are found according to the point-to-window weighted support, the point-to-class belongingness and the point-to-window weighted deviation of size, the meaningful outliers in high-dimension can be mined by means of appropriate user-defined threshold. Experimental results show that SVVHOT can improve scaling and precision.

关键词： outlier detection clustering hypergraph weight similarity

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Lightwave measurement and characterization in passive optical network (PON)

Lightwave measurement and characterization in passive optica...

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International Conference on Space Science and Communication (IconSpace)

作者： Ng Boon Chuan Mohammad Syuhaimi Ab-Rahman Spectrum Technology Research Division Computer and Network Security Research Group Department of Electrical Electronics and Systems Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia

The objective of this study is to determine and troubleshoot the problems of using handheld optical power meter and optical time domain reflectometer (OTDR) for monitoring and troubleshooting a conventional passive optical network (PON) equipped with optical splitter/coupler that used to broadcast optical signals from one fiber to many fibers. This paper proposes an appreciate approach to overcome these testing challenges. In this enhancement, a commercially available OTDR is located at central office (CO) and a tapper circuit is designed to allow the OTDR testing signal to bypass the optical splitter/coupler in a conventional PON when emitted from CO towards customer sites for centralized monitoring in downstream direction. This provides a faster, simpler, and less complex way for installation testing, service activation testing, and network performance monitoring and in-service troubleshooting a PON.

关键词： Passive optical networks Optical fiber networks Circuit testing Monitoring Coupling circuits Optical coupling Optical fiber couplers Optical fiber testing Broadcasting Central office

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Portable network Monitoring System for Passive Optical network (PON)

Portable Network Monitoring System for Passive Optical Netwo...

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International Conference on computer Technology and Development (ICCTD)

作者： Boonchuan Ng Mohammad Syuhaimi Ab-Rahman Aswir Premadi Kasmiran Jumari Spectrum Technology Research Division Computer and Network Security Research Group Department of Electrical Electronics and Systems Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia

A real-time optical network monitoring system named Smart Access network _ Testing, Analyzing and Database (SANTAD) that combined remote controlling, centralized monitoring and troubleshooting, fault detection, optical switching as well as protection and restoration features is introduced for delivering high quality of services (QoS) for passive optical network (PON). The implementation of SANTAD in PON shows its contribution on obtains the high accuracy in detecting any occurrence of fault and addressing the failure location within 30 seconds. The main advantages of this work are to assists the network operators to manage the PON network system more efficiently, reduce hands on workload, minimize network downtime, and rapidly restore failed services when problems are detected and diagnosed.

关键词： Passive optical networks Remote monitoring Optical fiber networks Fault detection Real time systems System testing Data analysis Spatial databases Centralized control Optical control

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Application of SANTAD in network monitoring and fault detection of FTTH-PON

Application of SANTAD in network monitoring and fault detect...

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International Conference on Electrical engineering and Informatics, ICEEI

作者： Ng Boon Chuan Mohammad Syuhaimi Ab-Rahman Aswir Premadi Kasmiran Jumari Spectrum Technology Research Division Computer and Network Security Research Group Department of Electrical Electronics and Systems Engineering Faculty of Engineering and Built Environment Universiti Kebangsaan Malaysia Bangi Selangor Darul Ehsan Malaysia

This paper presented a new approach to monitor the network performance and detect any occurrence of fault in fiber-to-the-home passive optical network (FTTH-PON) using an efficient monitoring system named Smart Access network Testing, Analyzing and Database (SANTAD). An optical time domain reflectometer (OTDR) with 1625 nm laser source is located at central office (CO) and connected to a remote personnel computer (PC) via Ethernet TCP/IP connection. A tapper circuit is designed to allow the OTDR testing signal to bypass the optical splitter in a conventional FTTH-PON when emitted in downstream direction. The key idea is to accumulate all OTDR measurement to be displayed on a PC computer screen for centralized monitoring and advanced data analyzing. The main advantages of this work is to improve the survivability and efficiency of FTTH-PON, while reduce the hands on workload as well as maintenance cost and time. The proposed system was implemented in a FTTH-PON network testbed and the experimental results showed that the proposed system achieves high accuracy in addressing the exact failure location.

关键词： Fault detection Passive optical networks Circuit testing Optical fiber testing computerized monitoring System testing Data analysis Circuit faults Optical fiber networks Remote monitoring

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A Role and Task-Based Workflow Dynamic Authorization Modeling and Enforcement Mechanism

A Role and Task-Based Workflow Dynamic Authorization Modelin...

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International Conference on Information Science and engineering (ICISE)

作者： Xiangrong Zu Lianzhong Liu Yan Bai Computer Science & Technology Department North China electric power university Beijing China Key Laboratory of Beijing network technology School of computer Science & engineering Beihang University Beijing China Automation Science & engineering Department North China electric power university Beijing China

ISBN: (纸本)9781424449095

Current workflow products can support more complex modeling of business processes, workflow engine mechanism is well researched, but the link between organizational elements and process activities is less well understood. In access control, most products can only support fixed role-based task assignment, not enough in considering more complex security policies, such as DSOD, task binding of duties, and temporal constraints, that important in dynamic workflow system. This paper examines workflow access control requirement in practice, analyzes WFMC workflow meta-model, and adopts the R&TBAC approach to separate role-based organization and task-based authorization-step modeling, and especially designs an agent-based dynamic policy enforcement mechanism to bridge the gap. The intelligent task assigning agent to be defined as a virtual participant in workflow process definition, and creating within workflow engine controlled available task instance, acts as to evaluate task dynamic authorization policy to provide eligible task participant role-set based on its information model. This paper gives a formal specification of the workflow authorization model, and designs the agent information model, assigning policy model, and function model in detail. The modeling approach can widely adapt to various existing workflow systems and can automatically change policy as enterprise organization or business process definition need changing.

关键词： Authorization Access control Engines Power engineering and energy Power engineering computing Intelligent agent Information security Information science computer networks Automation

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network intrusion detection and classification with Decision Tree and rule based approaches

Network intrusion detection and classification with Decision...

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International Symposium on Communications and Information Technologies (ISCIT)

作者： Thanvarat Komviriyavut Phurivit Sangkatsanee Naruemon Wattanapongsakorn Chalermpol Charnsripinyo Department of Computer Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand Network Technology Laboratory National Electronics and Computer Technology Center Klong Luang Pathum Thani Thailand

ISBN: (纸本)9781424445219

Together with the extensive deployment of computer networks, the number of network attacks is greatly increasing. These attacks affect to availability and quality of services of the networks as well as confidentiality of private or important information data. In this paper, we present two network intrusion detection (IDS) techniques which are C4.5 decision tree and Ripper rules to assess and test an online dataset(RLD09 dataset). The dataset was collected from actual environment and then preprocessed to have only 13 features which are much simpler than existing traditional dataset such as KDD99 with 41 features. Thus, the RLD09 dataset features can provide real-time detection speed with low memory and CPU consumption. Our IDSs can classify the network data into classes which are normal data, denial of service (DoS) attack, and Probe (Port Scanning) attack. Our IDS techniques give the detection rates higher than 98%. Furthermore, they can detect unknown or new attacks, where the C4.5 decision tree detection rate is about the double of the Ripper rule detection rate. These tests can prove that our techniques are effective in detecting and classifying the new unknown attacks in the real environment.

关键词： Intrusion detection Classification tree analysis Decision trees

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Access point evaluation using packet transfer ratio in multihop wireless networks

Access point evaluation using packet transfer ratio in multi...

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International Conference on Information networking

作者： Daiki Nobayashi Yutaka Nakamura Takeshi Ikenaga Yoshiaki Hori Katsuichi Nakamura Hiroshi Ishinishi Syuuji Kaizaki Department of Electrical Electronic and Computer Engineering Kyushu Institute of Technology Fukuoka Japan Information Science Center Kyushu Institute of Technology Fukuoka Japan Department of Computer Science and Communication Engineering Kyushu University Fukuoka Japan Network Application Engineering Laboratories Limited Fukuoka Japan Kyushu Electric Power Company Inc. Fukuoka Japan

ISBN: (纸本)9781424445264

In a multihop wireless network (MWN), access points (APs) in an MWN should provide high reliability to improve network availability. However, APs do not always work well. An AP may stop functioning due to a power outage or may malfunction for various reasons, including malicious attacks. To maintain MWN availability, the network should work autonomously to treat unreliable APs appropriately. In this paper, we propose an AP evaluation system in which each AP attempts to evaluate neighboring APs in collaboration with other APs that are neighbors of the target. Furthermore, each AP exchanges its evaluation result with other APs and attempts to use the result to control the MWN. We evaluate our proposed scheme using simulations to confirm its effectiveness.

关键词： Spread spectrum communication Wireless networks Collaboration Power engineering and energy Monitoring Availability network servers computer networks Power engineering computing computer science

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