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10th International Conference on Next Generation Teletraffic and Wired/Wireless Advanced Networking, NEW2AN 2010 and 3rd Conference on Smart Spaces (Are You Smart), ruSMART 2010

作者： Yu, Yuan-Tse Huang, Chung-Ming Wang, Hsing-Cheng Department of Software Engineering National Kaohsiung Normal University No.62 Shenjhong Rd. Yanchao Township Kaohsiung County 824 Taiwan Department of Computer Science and Information Engineering National Cheng Kung University No.1 University Rd. Tainan City 701 Taiwan Institute of Medical Informatics National Cheng Kung University No.1 University Rd. Tainan City 701 Taiwan

ISBN: (纸本)3642148905

In Opportunistic Networks (Oppnets), the link performance is highly unpredictable and the connections are broken frequently. The TCP protocol will perform badly in Oppnet because the end-to-end connection always needs to be reconstructed and the data need to be retransmitted from the original sender again. In order to solve the problem, we investigate the principles of at-one-time and on-time delivery, in which "at-one-time" means to transmit each piece of data just once and "on-time" means to transmit data to the receiver by a pre-scheduled time point. Based on the principles, we designed a Flexible Delivery Platform with at-One-time and On-time guarantees (FDPOO) in Oppnets. In FDPOO, we separate the transmitting processes into macro and micro stages. In the macro stage, it deals with the end-to-end transmission QoS;in the micro stage, it deals with the transmission between adjacent nodes along the constructed delivering path. We implement the proposed FDPOO based on the Delay Tolerant Network (DTN). The performance results show that the designed FDPOO can efficiently complete the data transmission at one time and on time. © 2010 Springer-Verlag.

关键词： Delay tolerant networks

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Nonresonant response characteristics to terahertz radiation of FETs: Influence of magnetic field

Nonresonant response characteristics to terahertz radiation ...

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作者： Zhu, Jingxuan Yan, Zhifeng Wang, Yinglei Lin, Xinnan He, Jin Key Laboratory of Integrated Microsystems School of Computer and Information Engineering Peking University Shenzhen Graduate School Shenzhen 518055 China TSRC Institute of Microelectronics School of Electronic Engineering and Computer Science Beijing 100871 China Peking University Shenzhen SOC Key Laboratory PKU HKUST Shenzhen Institute W303 West Tower IER Bldg. Hi-Tech Industrial Park South Shenzhen 518057 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences China

ISBN: (纸本)9781439834022

Nonresonant detection on terahertz radiation of field effect transistors by the influence of magnetic field is studied in this paper. The influence of the magnetic field upon the electron mobility in the transistor channel is discussed and the corresponding influence on the nonresonant detection photoresponse is analyzed in detail. Based on the work before, the numerical tool has been modified by adding the influence of magnetic field, and the nonresonant photoresponse characteristics are investigated. The result of simulation has verified the theory, and the work mechanism of this influence has been revealed in this paper.

关键词： Field effect transistors

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Numerical simulation on nonlinear response of two-dimensional electron plasmas in the field effect transistor structures

Numerical simulation on nonlinear response of two-dimensiona...

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作者： Yan, Zhifeng Zhu, Jingxuan Wang, Yinglei Lin, Xinnan He, Jin Key Laboratory of Integrated Microsystems School of Computer and Information Engineering Peking University Shenzhen Graduate School Shenzhen 518055 China TSRC Institute of Microelectronics School of Electronic Engineering and Computer Science Beijing 100871 China Peking University Shenzhen SOC Key Laboratory PKU HKUST Shenzhen Institute W303 West Tower IER Bldg. Hi-Tech Industrial Park South Shenzhen 518057 China State Key Laboratory of Functional Materials for Informatics Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences China

ISBN: (纸本)9781439834022

A new numerical method is proposed to study nonlinear response of two-dimensional electron plasmas in the channel of field effect transistor structures. The numerical simulations are not only in accordance with the existing theory, but also illustrate how phase shift influences the plasma wave transmission in the conduction channels of field effect transistor structures. The numerical simulations contain the nonlinear effects when the boundary conditions are asymmetric, i.e., when a frequency, amplitude, or phase shift exists between ac signals applied at drain and source sides of the field effect transistor (FET). The plasma wave transmission under nonresonant and resonant conditions is simulated by changing certain structure parameters with our developed simulator. These results demonstrate that the developed simulator is a useful tool in THz detector design and optimization.

关键词： Numerical methods

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Mobility Effects on the Performance of Mobile Ad hoc Networks

Mobility Effects on the Performance of Mobile Ad hoc Network...

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International Conference on Complex, Intelligent and Software Intensive Systems

作者： Makoto Ikeda Masahiro Hiyama Leonard Barolli Fatos Xhafa Arjan Durresi Graduate School of Engineering Fukuoka Institute of Technology (FIT) Department of Information and Communication Engineering Fukuoka Institute of Technology (FIT) Department of Languages and Informatics Systems Technical University of Catalonia Department of Computer and Information Science Indiana University Purdue University at Indianapolis (IUPUI)

ISBN: (纸本)9781424459179;9780769539676

In this paper, we present the implementation and analysis of our implemented testbed considering the Optimized Link State Routing (OLSR) protocol for Mobile Ad hoc Networks (MANET). We investigate the effect of mobility and topology changing in the throughput of MANETs. We study the impact of best-effort traffic for Mesh Topology. Experimental time is 150 seconds. In this work, we consider 6 experimental models and we assess the performance of our testbed in terms of throughput, round trip time and packet loss. From our experiments, we found that the OLSR protocol has a good performance when the source node is moving. However, the performance is not good when the three relay nodes are moving.

关键词： Mobile ad hoc networks optimized link state routing protocol Ad hoc networks Throughput Packet loss mobility

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Experimental Analysis of Coordination Strategies to Support Wireless Sensor Networks Composed by Static Ground Sensors and UAV-Carried Sensors

Experimental Analysis of Coordination Strategies to Support ...

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International Symposium on Parallel and Distributed Processing with Applications, ISPA

作者： Edison Pignaton de Freitas Tales Heimfarth Carlos Eduardo Pereira Armando Morado Ferreira Flavio Rech Wagner Tony Larsson School of Information Science Computer and Electrical Engineering Halmstad University Halmstad Sweden Institute of Informatics Federal University of Rio Grande do Sul Porto Alegre Brazil Computer Science Department Federal University of Lavras Lavras Brazil Military Institute of Engineering Rio de Janeiro Brazil

This paper presents a comparison among different strategies to coordinate the use of heterogeneous wireless sensors aimed for area surveillance. The heterogeneity among the sensor nodes is related to their sensing and mobility capabilities. The goal of the strategies is to provide coordination among the different nodes, in order to make the wireless sensor network perform its missions with higher efficiency. Strategies combine advantages of bio-inspired and utility-based approaches to coordination. Simulations of scenarios with different characteristics were performed and the results are compared and analyzed.

关键词： Unmanned aerial vehicles Wireless sensor networks Surveillance Mobile communication Sensor systems Target tracking

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Performance Evaluation of Wireless Sensor Networks for Different Radio Models Considering Mobile Event

Performance Evaluation of Wireless Sensor Networks for Diffe...

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International Conference on Complex, Intelligent and Software Intensive Systems

作者： Tao Yang Makoto Ikeda Leonard Barolli Arjan Durresi Fatos Xhafa Department of Information and Communication Engineering Fukuoka Institute of Technology (FIT) Department of Computer and Information Science Indiana University Purdue University at Indianapolis (IUPUI) Department of Languages and Informatics Systems Technical University of Catalonia

ISBN: (纸本)9781424459179;9780769539676

In this paper, we consider the behavior of a wireless sensor network for TwoRayGround and Shadowing radio models for the case of mobile event. By means of simulations, we analyse the performance of AODV protocol. In the previous work, we considered that the event node is stationary in the observation field. In this work, we want to investigate how the sensor network performs in the case when the event node moves. The simulation results show that the shadowing phenomena, by destroying the regularity of the network, reduce the mean distance among nodes and at the same time increase the interference level and the latency of packet transmission. We found that for mobile event, the Goodput and routing efficiency of TwoRayGround is better than Shadowing, but the Depletion of Shadowing is better than TwoRayGround.

关键词： Shadowing (Histology) Wireless sensor networks order of interference Performance Evaluation Mobile Packet transmission Radio Simulation results

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Improvement and Performance Evaluation of CAVENET: A Network Simulation Tool for Vehicular Networks

Improvement and Performance Evaluation of CAVENET: A Network...

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International Conference on Distributed Computing Systems Workshop

作者： Leonard Barolli Gjergji Mino Fatos Xhafa Arjan Durresi Akio Koyama Department of Information and Communication Engineering Fukuoka Institute of Technology FIT Fukuoka Japan Graduate School of Engineering Fukuoka Institute of Technology FIT Fukuoka Japan Department of Languages and Informatics Systems Technical University of Catalonia Barcelona Spain Department of Computer and Information Science Indiana University Indianapolis IN USA Department of Informatics Graduate School of Science and Engineering Yamagata University Yonezawa Yamagata Japan

Vehicle Ad-hoc Network (VANET) is a kind of Mobile Ad-hoc Network (MANET) that establishes wireless connection between cars. In VANETs and MANETs, the topology of the network changes very often, therefore implementation of efficient routing protocols is very important problem. In MANETs, the Random Waypoint (RW) model is used as a simulation model for generating node mobility pattern. On the other hand, in VANETs, the mobility patterns of nodes is restricted along the roads, and is affected by the movement of neighbour nodes. In this paper, we present a simulation system for VANET called CAVENET (Cellular Automaton based Vehicular NETwork). In CAVENET, the mobility patterns of nodes are generated by an 1-dimensional cellular automata. We improved CAVENET and implemented some routing protocols. We investigated the performance of the implemented routing protocols by CAVENET. The simulation results have shown that DYMO protocol has better performance than AODV and OLSR protocols.

关键词： Routing protocols Vehicles Mobile ad hoc networks Mathematical model Analytical models

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Measuring the Level of Security Introduced by Security Patterns

Measuring the Level of Security Introduced by Security Patte...

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International Conference on Availability, Reliability and Security, ARES

作者： Eduardo B. Fernandez Nobukazu Yoshioka Hironori Washizaki Michael VanHilst Department of Computer Science and Engineering Florida Atlantic University Boca Raton FL USA National Institute of Informatics GRACE Center Waseda University Tokyo Japan National Institute of Information Tokyo Japan Dept. of Computer Science and Engineering Florida Atlantic University Boca Raton FL USA

ISBN: (纸本)9781424458790

It is possible to reasonably measure the security quality of individual security patterns. However, more interesting is to ask: Can we show that a system built using security patterns is secure in some sense? We discuss here some issues about evaluating the security of a system built using security patterns. We consider the use of threats and misuse patterns to perform this evaluation.

关键词： computer security National security computer science informatics Performance evaluation Pattern analysis Availability Reliability engineering Performance analysis Catalogs

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Preface: Special issue on knowledge and information discovery in new generation systems

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New Generation Computing 2010年第1期28卷 1-3页

作者： Katarzyniak, Radoslaw P. Nguyen, Ngoc Thanh Hong, Tzung-Pei Institute of Informatics Wroclaw University of Technology Wybrzeze Wyspiańskiego 27 Wroclw 50-370 Poland Department of Computer Science and Information Engineering National University of Kaohsiung Kaohsiung 811 Taiwan Department of Computer Science and Engineering National Sun Yat-sen University Kaohsiung 804 Kaohsiung Taiwan

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Assessment of NER solutions against the first and second CALBC Silver Standard Corpus

Assessment of NER solutions against the first and second CAL...

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4th International Symposium on Semantic Mining in Biomedicine, SMBM 2010

作者： Rebholz-Schuhmann, Dietrich Yepes, Antonio Jimeno Li, Chen Kafkas, Senay Lewin, Ian Kang, Ning Corbett, Peter Milward, David Buyko, Ekaterina Beisswanger, Elena Hornbostel, Kerstin Kouznetsov, Alexandre Witte, René Laurila, Jonas B. Baker, Christopher J.O. Kuo, Cheng-Ju Clematide, Simone Rinaldi, Fabio Farkas, Richárd Móra, György Hara, Kazuo Furlong, Laura Rautschka, Michael Neves, Mariana Lara Pascual-Montano, Alberto Wei, Qi Collier, Nigel Chowdhury, Md. Faisal Mahbub Lavelli, Alberto Berlanga, Rafael Morante, Roser Van Asch, Vincent Daelemans, Walter Marina, José Luís Van Mulligen, Erik Kors, Jan Hahn, Udo EMBL Outstation European Bioinformatics Institute Hinxton Cambridge CB10 1SD United Kingdom Dept. of Medical Informatics Erasmus University Medical Center Rotterdam NL Netherlands Linguamatics Ltd. St. John's Innovation Centre Cambridge United Kingdom Lab. Friedrich-Schiller-Universität Jena Germany Dept. of Computer Science and Applied Statistics University of New Brunswick Canada Dept. of Computer Science and Software Engineering Concordia University Montreal Canada Institute of Information Science Academia Sinica Taipei 115 Taiwan University of Zürich Switzerland Research Group on Artificial Intelligence Hungarian Academy of Sciences Hungary Institute of Science and Technology Nara Japan IMIM DCEX Universitat Pompeu Fabra Barcelona Spain Madrid Spain National Institute of Informatics Tokyo Japan Fondazione Bruno Kessler Trento Italy Universitat Jaume I Spain CLiPS University of Antwerp Belgium Complutense University of Madrid Spain

Background: Text mining challenges have been organised to measure the performance of automatic text mining solutions against a manually annotated gold standard corpus (GSC). The preparation of the GSC is timeconsuming and costly and the final corpus consists at the most of a few thousand documents annotated with a limited set of semantic groups. To overcome these shortcomings, the CALBC project partners (PPs) have produced a large-scale annotated biomedical corpus with four different semantic groups through the harmonisation of annotations from automatic text mining solutions, the first version of the Silver Standard Corpus (SSC-I). The four semantic groups were chemical entities and drugs (CHED), genes and proteins (PRGE), diseases and disorders (DISO) and species (SPE). This corpus has been used for the First CALBC Challenge asking the participants to annotate the corpus with their annotation solutions.

关键词： Semantics

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