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2012 International Conference on Future Optical Materials and Circuit Design(FOMCD 2012)

作者： Muhammad Irfan Zhu Hong Nueraimaiti Aimaier Li Zhuguo Collage of Computer Science and Technology Huazhong University of Science and Technology Department of Electrical & Electronic Engineering Faculty of EngineeringUniversity Putra Malaysia Department of control science and technology Huazhong University of Science and Technology

Cloud Computing is not a revolution;it's an evolution of computer science and technology emerging by leaps and bounds, in order to merge all computer science tools and technologies. Cloud Computing technology is hottest to do research and explore new horizons of next generations of computer Science. There are number of cloud services providers(Amazon EC2), Rackspace Cloud, Terremark and Google Compute Engine) but still enterprises and common users have a number of concerns over cloud service providers. Still there is lot of weakness, challenges and issues are barrier for cloud service providers in order to provide cloud services according to SLA(Service Level agreement). Especially, service provisioning according to SLAs is core objective of each cloud service provider with maximum performance as per SLA. We have identified those challenges issues, as well as proposed new methodology as "SLA(Service Level Agreement) Driven Orchestration Based New Methodology for Cloud Computing Services". Currently, cloud service providers are using "orchestrations" fully or partially to automate service provisioning but we are trying to integrate and drive orchestration flows from SLAs. It would be new approach to provision cloud service and deliver cloud service as per SLA, satisfying Qo S standards.

关键词： Cloud computing Cloud service provisioning Cloud orchestrations Qo S(Quality of Service) SLA(Service Level Agreement)

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Rule Extraction from Micro-Blog Using Inductive Logic Programming

Rule Extraction from Micro-Blog Using Inductive Logic Progra...

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Spring Congress on engineering and technology

作者： Noriaki Chikara Miyuki Koshimura Hiroshi Fujita Ryuzo Hasegawa Department of Computer Science and Electronic Engineering Tokuyama College of Technology Shunan Japan Faculty of Information Science and Electrical Engineering Kyushu University Fukuoka Japan

Information recommender system attempts to present information that is likely to be useful for the user. Some information recommender systems recommend persons which users are likely to follow in Twitter. Showing recommendation reason is an important role of the systems. However, current recommender systems give only simple or quantitative reasons for the recommendation. In this paper, we aim at giving precise and non-quantitative reasons which are also easy to understand. We make use of formulas in first-order predicate logic for explaining the reason. In order to build such formulas, we use Inductive Logic Programming. We succeeded to extract several useful formulas from micro-blog.

关键词： Twitter Logic programming Recommender systems Data mining Collaboration Media

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Stability Analysis for Uncertain Linear Systems with Random Parameters

Stability Analysis for Uncertain Linear Systems with Random ...

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IEEE Annual Conference on Decision and Control

作者： Xiaoyang Li Hai Lin Jie Lian Ben M. Chen Department of Electrical and Computer Engineering National University of Singapore Department of Electrical Engineering University of Notre Dame Faculty of Electronic Information and Electrical Engineering Dalian University of Technology

ISBN: (纸本)9781467320658

This paper studies the stability of linear systems with uncertain parameters in the state matrix. Instead of arguing for the worst case like in the classical robust stability methods, we make use of the statistical information on these uncertain parameters, which can be obtained statistically from manufacturing data. Hence, this paper follows the idea of probabilistic robust control and investigates the stability of linear systems with random parameters of known distributions. A sufficient condition for the asymptotic stability in moments is obtained using the generalized Polynomial Chaos expansion theory. Furthermore, to gain more insights on the effects of the random parameters on stability, a special case of uniform distribution is discussed. Finally, the paper concludes with illustrative examples and remarks on future work.

关键词： Linear system Stability analysis Plant uncertain Robust control statistical information parameters Random asymptotic stability region Uniform distribution Uncertainty Moment of force

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Design considerations of MEMS based piezoelectric cantilever for harvesting energy

Design considerations of MEMS based piezoelectric cantilever...

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Asia-Pacific Conference on Applied Electromagnetics, APACE

作者： Swee-Leong Kok Ab Rahman Mohd Fauzi Faculty of Electronic and Computer Engineering Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia Faculty of Engineering Technology Universiti Teknikal Malaysia Melaka Durian Tunggal Malacca Malaysia

One of the challenges of miniature electronic system such as those work as a part of a wider wireless sensor system is to provide sustainable electrical power source to all the electronic components in a small enclosure of sensor node. However, as the size of the micro-power generator reduces, the physical limitations as well as the reduction of output power become the major concerns of the usefulness of a miniature energy harvester. In this paper, the design is taking into considerations of the mechanical as well as the electrical properties of an unimorph piezoelectric cantilever. These encompassed the natural frequency and the neutral axis of the structure. Resistive load was also being investigated for optimizing the electrical output power of the micro-generator. It was found that the issue of the maximum deflection of the cantilever is more prominent than the stress on the cantilever for a miniature device. The adjustment on the neutral axis as well as on matching with resistive load are also important in generating optimum electrical output power.

关键词： Damping Electrodes Stress Generators Power generation Mathematical model Equations

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An algorithm for mining high average utility itemsets based on tree structure

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Journal of Information and Computational Science 2012年第11期9卷 3189-3199页

作者： Feng, Lin Jiang, Mei Wang, Le School of Innovation Experiment Dalian University of Technology Dalian Liaoning 116024 China School of Computer Science and Technology Faculty of Electronic Information and Electrical Engineering Dalian University of Technology Dalian Liaoning 116024 China

Utility itemsets mining is an extension of frequent itemsets mining, considering both the quantities of items in the transactions and the profits of the items. In traditional utility itemsets mining, the utility of an itemset is the summation of the utilities of the itemset in all the transactions containing this itemset while ignoring the length of the itemset and will increase along with an increase in its length. To eliminate the effect of the length of an itemset, average utility measurement was proposed, and average utility of an itemset was defined as the total utility of the itemset divided by its length. In this article, we propose a pattern-wise algorithm to mine high average utility itemsets. Experimental results show that the proposed algorithm outperforms the existing HAUP-mine algorithm. © 2012 Binary Information Press.

关键词： Trees (mathematics)

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Wireless communication requirements selection according to PMUs data transmission standard for smart grid

Wireless communication requirements selection according to P...

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IEEE International Conference on Smart Grid engineering (SGE)

作者： M. M. Eissa Ali M. Allam M. M. A. Mahfouz Hossam Gabbar Department of Electrical Machine and Power Engineering Faculty of Engineering Helwan University Egypt Department of Electronic Communication and Computer Engineering Helwan University Egypt Faculty of Engineering and Applied Science University of Ontario Institute of Technology Canada

Large power systems are facing new challenges, such as increasing penetration of renewable energy sources, in particular wind generation, growing demands, limited resources, and competitive electricity markets. Under these conditions, the large power systems have to be covered from the reliability of the protection coordination. Wireless communication tool to collect data from different units to cape with the world is proposed to solve the interconnected power system as wide area system from the protection to coordination and then control action. The paper introduces the communication performance for the wireless scheme used for collecting data from phase measuring units (PMUs). The performance of Long Term Evolution (LTE) from the point of view the communication standard and PMUs data transmission is discussed. PMUs data transmission parameters are studying. These parameters are compared with the performance of LTE communication network. The main wireless communication requirements to be applied on smart gird are given. The estimation of the performance of LTE in terms of latency and Bandwidth based on the standards from 3GPP is given.

关键词： Phasor measurement units Wireless communication Smart grids Communication system security Data communication Substations Relays

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An effective strategy for mining frequent itemsets from uncertain dataset

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Journal of Convergence Information technology 2012年第17期7卷 190-196页

作者： Liang, Shengbin Jiang, Binbin Wang, Le Zhang, Rui First Author School of Software Engineering Henan University China School of Software Nanyang Institute of Technology China School of Computer Science and Technology Faculty of Electronic Information and Electrical Engineering Dalian University of Technology China Daqing Oilfield Engineering Limited Corporation China

Mining frequent itemsets from uncertain datasets is an emerging research in the field of data mining;it differs from traditional frequent itemset mining in that each item in an uncertain dataset has a probability value associated with it. Existing algorithms in this field uses candidate generating and processing approaches to discover the frequent itemsets iteratively, but the number of candidates might be enormously huge and hence it is the bottleneck of the mining process. To reduce the number of candidates, we propose a strategy by adopting a weight value to decrease the estimated expected support of an itemset. We apply our strategy to the state of the art algorithm MBP to get a revised algorithm we call RMBP. The performance of RMBP was evaluated in comparison with MBP on sparse and dense datasets. Experimental results show that the algorithm RMBP outperforms the algorithm MBP in terms of running time and memory.

关键词： Data mining

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Coding and interleaving schemes for Wireless Sensor Networks

Coding and interleaving schemes for Wireless Sensor Networks

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2012 8th International Conference on Informatics and Systems, INFOS 2012

作者： Madkour, M.E. Soliman, S.E. Varshney, P.K. Moawad, M.I. El-Samie, F.E. Abd Nuclear Fuel Technology Dept. Hot Labs Center Atomic Energy Authority Cairo Egypt Electrical Engenering and Computer Sience Dept. Syracuse NY 13244 United States Electronics and Electrical Communications Dept. Faculty of Electronic Engineering Menoufia University Menouf Egypt

ISBN: (纸本)9789774035067

The transmission of data over Wireless Sensor Networks (WSNs) poses significant constraints on the energy and bandwidth of the communication system. We consider the problem of decision fusion in a distributed detection system in a classical parallel fusion structure by incorporating the fading channel layer that is omnipresent in wireless sensor networks. We use channel coding and transmit diversity schemes, Equal Gain Combining (EGC) and Maximum Ratio Combining (MRC). We employ a multi-carrier modulation scheme over the wireless communication channel. This paper proposes the use of Hamming, Low-Density Parity-Check (LDPC) Coding, or Viterbi coding. Interleaving is also suggested in this paper using chaotic Baker map randomization for the reduction of the Bit Error Rate (BER). Moreover, the chaotic interleaving adds a degree of security to the transmitted data. Simulation results show that the application of coding and interleaving achieves a performance improvement in the wireless sensor network. © 2012 Cairo University.

关键词： Wireless sensor networks

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Analysis of mobility parameters effect on position information inaccuracy of GPSR position-based MANET routing protocol

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Journal of Theoretical and Applied Information technology 2012年第1期40卷 37-43页

作者： Alsaqour, Raed Shanudin, Mohamad Ismail, Mahamod Abdelhaq, Maha Department of Computer Science Faculty of Information Science and Technology Universiti Kebangsaan Malaysia 43600 Bangi Selangor Darul Ehsan Malaysia Department of Electrical Electronic and Systems Engineering Faculty of Engineering Universiti Kebangsaan Malaysia 43600 Bangi Selangor Malaysia

Position-based routing protocols have become more popular in Mobile Ad hoc network (MANET) due to their advantages in using geographical position information of the nodes to route the data packet to the destination node. Each node periodically sends their geographical position information to its neighbors using beacon packets. Data packet routing in position-based routing protocol uses neighbors' position information, which is stored in the node's neighbors list and the destination node's position information stored in the routing data packet header field to route the data packet from source to destination. Most of the current work in position-based routing protocols assumes that position information in the node's neighbors list for its neighbors is accurate, while in reality, only a rough estimate of this position information is available for the nodes. This paper provides analysis study to realize the effect of position information inaccuracy caused by different mobility parameters on Greedy Perimeter Stateless Routing (GPSR) position-based routing protocol. In general, inaccuracy occurs when inexact position information is used. However, the results from the analysis work shown that the node beacon packet interval-time and node speed mobility parameters have a high impact on position information inaccuracy and have an intense effect in degrading the performance of GPSR protocol in terms of average end-to-end delay, non-optimal route, false local maximum, and routing loop. © 2005 - 2012 JATIT & LLS. All rights reserved.

关键词： Routing protocols

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A motion control method of four-wheel drive omni-directional mobile robots based on multi points preview control

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Journal of Theoretical and Applied Information technology 2012年第1期45卷 278-284页

作者： Chen, Jianping Wang, Jianbin Yang, Yimin Xiao, Qijun Faculty of Computer Zhaoqing University Zhaoqing 526061 Guangdong China Faculty of Automation Guangdong University of Technology Guangzhou 510090 Guangdong China Faculty of Electronic Information and Mechnical and Electrical Engineering Zhaoqing University Zhaoqing 526061 Guangdong China

Aiming at the problem that the traditional control methods can't satisfactorily complete the trajectory tracking task, so a multi point preview control method based on automobile driving is designed for the motion control of four-wheel drive omni-directional mobile robot. Lateral position error and curvature of each preview point are calculated based on the robot's lateral position error model. Meanwhile, by considering the current position error and preview point's position error, a fuzzy controller is designed. The fuzzy controller adjusts the lateral velocity and longitudinal velocity according to the preview information of the different path conditions, so as to realize the expected trajectory tracking. Experiment results show that the tracking errors of different paths are obviously reduced, and the tracking precision is greatly improved, which means the preview control method presented in this paper is effective. It can realize fast track even when the tracking path varies a lot. © 2005 - 2012 JATIT & LLS. All rights reserved.

关键词： Fuzzy control

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