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2012 IEEE 16th International Conference on computer Supported Cooperative Work in Design, CSCWD 2012

作者： Li, Minmin Zhu, Jie Li, Xiaoping Key Laboratory of Computer Network and Information Integration of Ministry of Education School of Computer Science and Engineering Southeast University Nanjing China

ISBN: (纸本)9781467312127

In this paper, an effective metaheuristic is developed for the no-wait job shop problem with the objective of makespan minimization, which is strongly NP-hard. The problem is usually decomposed into a sequencing sub-problem and a timetabling one. A partial delay timetabling method is constructed by combining the as early as possible strategy with the as late as possible rule. By integrating the variable neighborhood structure, a new Local Search method CLMVN (Complete Local Search with Memory and Variable Neighborhood structure) is presented for the sequencing problem. Experimental results show that CLMVN outperforms CLLM (the best algorithm for the considered problem so far) on average with less computation time. © 2012 IEEE.

关键词： Job shop scheduling

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A netflow v9 measurement system with network performance function 5th

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5th International Conference on Internet and Distributed Computing Systems, IDCS 2012

作者： Cheng, Guang Wu, Hua School of Computer Science and Engineering Southeast University Nanjing210096 China Key Laboratory of Computer Network and Information Integration Ministry of Education China

ISBN: (纸本)9783642348822

Netflow can be employed for accounting, anomaly detection and network monitoring, and can bring new data source for network management. But most IPv6 routers in CERNET2 backbone network don’t provide IPFIX or NetFlow flow record function. Netflow flow records don’t have the network performance information, such as RTT and packet loss ratio, so we hardly use the Netflow data to analyze the network performance. In this paper, we designs a NetFlow v9 measurement system (N9MS) which converts IPv6 packet headers into the Net-Flow v9 flow records and monitors the link performance with these flow records. The N9MS has two improvements to the traditional Cisco’s sampled NetFlow feature. Firstly, the Cisco’s sampling strategy is to sample packets, while that in the N9MS is flow sampling which can keep all packets in the sampled flows to infer network performance based on these sampled packets. Secondly, N9MS directly uses these sampled packets to calculate these performance metrics, such as round trip time (RTT) and packet loss ratio. We also define both RTT and packet loss ratio fields in the scalability NetFlow v9 template format. In this paper we also use the N9MS to monitor a 10Gbps backbone link between Nanjing site and the CNGI-CERNET2 backbone, and give some experimental results. © Springer-Verlag Berlin Heidelberg 2012.

关键词： information management

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Estimation packet loss ratios for the two segments of end-to-end path on the monitor

Estimation packet loss ratios for the two segments of end-to...

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2012 International Conference on computer Science and Service System, CSSS 2012

作者： Cheng, Guang Gao, Zhongyao School of Computer Science and Engineering Southeast University Nanjing 210096 China Key Laboratory of Computer Network and Information Integration Ministry of Education China

ISBN: (纸本)9780769547190

Packet loss may cause the degradation of network and application performance. This paper proposes a passive measurement method called LTS to estimate end-to-end path packet loss ratio for the two segments of the path divided by the monitor node. This method can estimate the packet loss ration of each segment and infer loss ratios based on IP headers identification field, TCP headers sequence number and packets interval. The segment estimation packet loss method can be useful to evaluate the performance of core network or internet work if the monitor is put in the border of a network. The algorithm is evaluated to use a test bed simulation measurement, and is analyzed reordering ratios and loss ratios based on the traces collected from the CERNET backbone links. © 2012 IEEE.

关键词： Packet loss

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A feedback-based timeout packets dropping strategy in real-time wireless sensor networks

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2nd World Congress on computer Science and information Engineering, CSIE 2011

作者： Shen, Zhuowei Xu, Peng Xu, Xiaoxi Key Lab. of Computer Network and Information Integration Ministry of Education School of Computer Sci. and Eng. Southeast University Nanjing China

ISBN: (纸本)9783642257681

Resource limited real-time wireless sensor network is a new type of application of sensor network. In this kind of networks, there are numerous invalid real-time packets, which have already expired or are destined to expire. In this paper, a feedback-based timeout packet dropping strategy (FBTPD) is proposed. With this strategy, timestamps are piggybacked in real-time packets. So that sink node can gather the historical information and estimate the future transmitting time of some sensor node. Then the estimated transmitting time is fed back to the sensor node in a feedback packet. The sensor node hereby drops the invalid realtime packets which will expire later. Simulation experiments reveal that: compared with other dropping policies, FBTPD can drop more invalid real-time packets, and can significantly improve the throughput of the non real-time packets. Thus FBTPD can efficiently boost the resources utilization in wireless sensor networks, especially in hybrid real-time wireless sensor networks. © Springer-Verlag Berlin Heidelberg 2012.

关键词： Real time systems

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Efficient iterated greedy algorithm to minimize makespan for the no-wait flowshop with sequence dependent setup times

Efficient iterated greedy algorithm to minimize makespan for...

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2012 IEEE 16th International Conference on computer Supported Cooperative Work in Design, CSCWD 2012

作者： Xu, Tao Zhu, Xia Li, Xiaoping School of Computer Science and Engineering Southeast University 211189 Nanjing China Key Laboratory of Computer Network and Information Integration Southeast University Ministry of Education China

ISBN: (纸本)9781467312127

In this paper, an efficient iterated greedy algorithm is proposed for the SDST (Sequence Dependent Setup Time) no-wait flowshop with makespan minimization, which is known to be NP-hard. By introducing effective operators, the Iterated Greedy algorithm is adapted to the considered problem. To improve the quality of solutions, Local Search is incorporated into the modified Iterated Greedy algorithm. The proposed algorithm is compared with BIH, GAPH1∼GAPH4, and IG-Ruiz on Taillard's instances of ssd10, ssd50, ssd100, and ssdl25. Experimental results demonstrate that the proposal outperforms BIH and GAPH1∼GAPH4. As well, the proposal is more effective than IG-Ruiz under the same computation-time criterion. © 2012 IEEE.

关键词： Local search (optimization)

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An improved harmony search algorithm for blocking job shop to minimize makespan

An improved harmony search algorithm for blocking job shop t...

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2012 IEEE 16th International Conference on computer Supported Cooperative Work in Design, CSCWD 2012

作者： Hou, Peiying Wang, Dandan Li, Xiaoping School of Computer Science and Engineering Southeast University 211189 Nanjing China Key Laboratory of Computer Network and Information Integration Southeast University 211189 Nanjing China

ISBN: (纸本)9781467312127

In this paper, Harmony Search is applied to the blocking job shop problem with makespan minimization. According to the characteristics of the considered problem, a decoding method is introduced to generate feasible solutions. A rule is proposed to improvise new harmonies. Some approaches are developed to determine the harmony search considering rate, the pitch adjusting rate, the dynamic harmony memory. A local search is investigated to further improve quality of the solutions. Results of numerical experiments on classical benchmark instances show that the proposed algorithm can improve makespan 16.50% on average. © 2012 IEEE.

关键词： Benchmarking

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Semantic access control for cloud computing based on e-Healthcare

Semantic access control for cloud computing based on e-Healt...

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2012 IEEE 16th International Conference on computer Supported Cooperative Work in Design, CSCWD 2012

作者： Sun, Lili Wang, Hua Yong, Jianming Wu, Guoxin Centre for Systems Biology University of Southern Queensland Toowoomba Australia School of Information Systems University of Southern Queensland Toowoomba Australia School of Computer Science and Engineering Key Laboratory for Computer Network and Information Integration Southeast University China

ISBN: (纸本)9781467312127

With the increased development of cloud computing, access control policies have become an important issue in the security filed of cloud computing. Semantic web is the extension of current Web which aims at automation, integration and reuse of data among different web applications such as clouding computing. However, Semantic web applications pose some new requirements for security mechanisms especially in the access control models. In this paper, we analyse existing access control methods and present a semantic based access control model which considers semantic relations among different entities in cloud computing environment. We have enriched the research for semantic web technology with role-based access control that is able to be applied in the field of medical information system or e-Healthcare system. This work demonstrates how the semantic web technology provides efficient solutions for the management of complex and distributed data in heterogeneous systems, and it can be used in the medical information systems as well. © 2012 IEEE.

关键词： Cloud computing

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PASS: An adaptive multi-copy routing scheme for intermittently connected mobile Ad Hoc networks

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Journal of Convergence information Technology 2012年第14期7卷 315-323页

作者： Xu, Jia Wang, Ru Chuan Sun, Li Juan College of Computer Nanjing University of Posts and Telecommunications Nanjing China Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks Nanjing China Key Lab of Broadband Wireless Communication and Sensor Network Technology Nanjing University of Posts and Telecommunications Ministry of Education Jiangsu Province Nanjing China Key Laboratory for Computer Network and Information Integration Southeast University Ministry of Education Nanjing China State Key Lab. for Novel Software Technology Nanjing University Nanjing China

Intermittently Connected Mobile Ad Hoc networks (ICMANs) are mobile networks in which complete source-to-destination paths do not exist most of the time. This paper proposed a Predictable Adaptive Seed Spray routing (PASS) for intermittently connected mobile Ad Hoc networks. PASS is a cost-efficient delay-bounded routing protocol without network parameters and provides acceptable and resilient service in the face of challenged environments. Simulations have shown that PASS outperforms existing schemes such as Epidemic, binary spray & wait and AMR with respect to routing cost and adaptability.

关键词： Routing protocols

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A new operator for ABox revision in DL-Lite 26

A new operator for ABox revision in DL-Lite

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26th AAAI Conference on Artificial Intelligence and the 24th Innovative Applications of Artificial Intelligence Conference, AAAI-12 / IAAI-12

作者： Gao, Sibei Qi, Guilin Wang, Haofen Key Laboratory of Computer Network and Information Integration of State Education Ministry School of Computer Science and Engineering Southeast University China SiPaiLou #2 Nanjing 210096 China Shanghai Jiao Tong University Shanghai China

In this paper, we propose a new operator for revising ABoxes in DL-Lite ontologies. We present a graph-based algorithm for ABox revision in DL-Lite, which implements the revision operator and we show it runs in polyno... 详细信息

ISBN: (纸本)9781577355687

关键词： Ontology

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Zigbee enabled remote temperature monitor system for high-voltage substations

Zigbee enabled remote temperature monitor system for high-vo...

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2012 Spring World Congress on Engineering and Technology, SCET 2012

作者： Jun, Zhang Wei, Dai Di, Huang Sanfeng, Zhang Yi, Ji College of Software Engineering Southeast University Nanjing China College of Computer Science and Engineering Southeast University Nanjing China Key Laboratory of Computer Network and Information Integration Southeast University Ministry of Education Nanjing China

ISBN: (纸本)9781457719646

in high-voltage substations, poor contacts at the junctions of contacts can generate heat leading to high temperature, arc and fire disaster in serious condition. In this paper, we present a remote temperature monitor system to monitor and alarm when temperature of the contacts increases. The system measures temperature by sensor node based on low power consuming temperature sensor and Zigbee communication because power consuming becomes a critical fact constrained by long term running and inconvenient maintenance of high-voltage substations. In the system, sensor nodes are deployed on the contacts to be measured, cluster headers in charge of collecting data from sensor nodes are deployed on each distributor and cluster headers are connected with mast monitor computer via RS485 network. This paper presents design, implementation and test of sensor nodes, cluster headers and the master monitor software. © 2012 IEEE.

关键词： Sensor nodes

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