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International Conference on computer and Electrical engineering, ICCEE

作者： Zuraini Ismail Christine Simfukwe Department of Science College of Science & Technology International Campus Universiti Teknologi Malaysia Kuala Lumpur Malaysia Centre of Advanced Software Engineering Faculty of Computer Science and Information Systems International Campus Universiti Teknologi Malaysia Kuala Lumpur Malaysia

"Malware" is an umbrella term that describes a variety of Internet-borne threats, including viruses, spyware,Trojan horses, spam, bots and more. This sophisticated and evolving security threat puts all businesses at risk, no matter how big or small. Malware creates unique challenges to higher learning institutions (HLI) in protecting their information assets. This is largely due to the fact that HLI information technology (IT) departments must balance between enabling a highly collaborative, non-restrictive environment and ensuring the confidentiality, integrity, and availability of data and computing resources. HLIs can proactively defend the network to reduce the risks associated with this threat by assessing the vulnerabilities and threats present in their networks and implementing appropriate multilayer security. A multilayer approach involves applying countermeasures at every layer of the computer network, from the perimeter routers and firewalls to users' personal computers in order to increase network security. The goal of this study is to propose a framework for network security protection against malware to increase the level of protection using non technical countermeasures.

关键词： Protection Nonhomogeneous media Internet computer viruses Horses Information security Information technology Collaboration Availability Data security

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A Hybrid Particle Swarm Optimization Algorithm for Multimodal Function Optimization

A Hybrid Particle Swarm Optimization Algorithm for Multimoda...

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International Workshop on Intelligent Systems and Applications, ISA

作者： Jirong Gu Lin Lin Hui Wang College of Geography and Resources Sciences Sichuan Normal University China Department of Computer Science Yili Normal School Yining China State Key Laboratory of Software Engineering Wuhan University of China China

Particle swarm optimization (PSO) has shown its good performance on numerical function problems. However, on some multimodal functions the PSO easily suffers from premature convergence because of the rapid decline in velocity. In this paper, a hybrid PSO algorithm, called HPSO, is proposed, which employs a modified velocity model to guarantee a non-zero velocity. In addition, a Cauchy mutation operator conducted on the global best particle is used for improving the global search ability of PSO. Experimental studies on a suite of multimodal functions with many local minima show that the HPSO outperforms the standard PSO, CEP, Gaussian swarm with Gaussian mutation (GPSO+GJ) and Gaussian swarm with Cauchy mutation (GPSO+CJ) on most test functions.

关键词： Particle swarm optimization Genetic mutations Evolutionary computation Equations software algorithms Educational institutions Geography computer science software engineering Convergence

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An Improved OIF Elman Neural Network Model with Direction Profit Factor and Its Applications

An Improved OIF Elman Neural Network Model with Direction Pr...

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International Conference on Machine Vision (ICMV)

作者： Ming Li Limin Wang Yang Liu Ying Liu Qian Sun Xuming Han Department of Information Changchun Taxation College Changchun China School of Computing and Software Engineering Southern Polytechnic State University USA College of Computer Science and Technology Jilin University Changchun China Institute of Information and Spreading Engineering Changchun University of Technology Changchun China

Output-input feedback (OIF) Elman neural network is a dynamic feedback network. An improved model is proposed based on the OIF Elman neural network by introducing direction profit factor in this paper. Moreover, the proposed model is applied to forecast the composite index of stock. In addition, some comparisons are also made when the stock exchange is performed using prediction results from OIF Elman neural network. Simulation results show that the proposed model is feasible and effective in the finance field. It shows that the proposed model can not only improve the forecasting precision evidently and possess the characteristic of quick convergence but also provide a good reference tool for investors to obtain more profits.

关键词： Neural networks Predictive models Artificial neural networks Stock markets Neurofeedback State feedback Finance Machine vision Application software computer networks

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H∞ Filtering for Neutral Stochastic Systems with Time-Varying Delays

H∞ Filtering for Neutral Stochastic Systems with Time-Varyi...

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Joint 48th IEEE Conference on Decision and Control and 28th Chinese Control Conference

作者： Lin Li Yingmin Jia Junping Du Hideki Kokame the Department of Systems and Control Beihang University (BUAA) the Beijing Key Laboratory of Intelligent Telecommunications Software and Multimedia School of Computer Science and TechnologyBeijing University of Posts and Telecommunications the College of Engineering Osaka Prefecture University

This paper is devoted to the problem of H filtering for a class of neutral stochastic systems with both discrete and distributed time-varying *** objective is to design a full order filter such that the resulting filtering error system is stochastically asymptotically stable with a prescribed H∞performance *** on the stability theory of stochastic systems,a delay-dependent and rate-dependent sufficient condition for the existence of filter is obtained in terms of linear matrix inequalities（LMIs）.The corresponding filter design method is also proposed,while the explicit expression for the desired filter is given.A numerical example is finally included to illustrate the effectiveness of the proposed method.

关键词： Filtering for Neutral Stochastic Systems with Time-Varying Delays filter

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Forward XPath Rewriting over XML Data Streams

Forward XPath Rewriting over XML Data Streams

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2009 IEEE International Symposium on IT in Medicine & Education( IEEE 教育与医药信息化国际会议)

作者： Lixiang Qiao Zhimin Yang Chi Yang Chang Liu Kaijun Ren Le Yu Department of Computer Shandong Univisity at Weihai Weihai P.R.China School of Computer Science and Software Engineering The University of Western Australia Perth 35 College of Computer National University of Defense Technology Changsha Hunan410073 P.R.China CS Department of Earth Sciences Zhejiang University 38 Zheda Road Hangzhou310027 China

Streaming XML data is often encountered in applications in Medical Biology. So, how to effectively manage and query XML data streams can be a fundamental issue for the quality of those Medical Biology applications. With respect to current methods for XPath query evaluation over XML data streams, adoption of some query rewriting techniques are common when encountering some complex query which can cause ambiguities and redundant query cost. Lots of work can be found in database research community to simplify query and remove its redundancy. However, less attention is paid to make use of query rewriting to benefit the query evaluation process of an efficient XML data stream query system. In other words, the query rewriting is not directly for the purpose of simplicity or redundancy removal;whereas it is for the convenience of an efficient query. In this paper, we propose a normalization process which rewrites the Forward XPath expressions for our XML data stream query system. The proposed normalization is expected to normalize all the complex predicates connected with logic operators into twig structures. With this normalization, queries can be transformed into a well-structured one, the formal way of the normalization makes the query language of our XML data stream query system more precise and the twig structure facilitates the query evaluation of our query system.

关键词： Normalization Forward XPath XML Data Streams Medical Biology

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Best practices in software engineering project class management

SIGCSE Bulletin Inroads

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SIGCSE Bulletin Inroads 2009年第1期41卷 201-202页

作者： Beck, Jon Almstrum, Vicki L. Ellis, Heidi J.C. Towhidnejad, Massood Zander, Carol Computer Science Info. Sys. Fort Lewis College Durango CO 81301 United States Comp. Sci. and Comp. Eng. Pacific Lutheran University Tacoma WA 98447 United States Comp. Science and Engineering U. of California San Diego CA 92093 United States Department of Computer Science College of Charleston Charleston SC 29424 United States Computing and Software Sys. U. of Washington Bothell WA 98011 United States

An increasing number of institutions require software engineering as part of their computing curriculum. Technical managers and hiring personnel of many software development companies cite familiarity with software engineering principles among the top skills required for entry-level computing positions. Furthermore, technical managers and hiring personnel often consider experience with real-world group projects to be a necessary part of the computing background of prospective new hires. These conclusions are based on systematic discussions with technical and humanresources personnel at 13 large Midwestern companies (50+ developers) over the past seven years (J. Beck, unpublished data, 2001-2008). Unfortunately, many computing students never benefit from the experience of a real project during their undergraduate studies. The experiences of many students are limited to toy textbook problems assigned to small groups, which means they miss out on a vitally important part of their computing education. Three areas of particular concern for providing students with class projects that incorporate real-world hurdles within the classroom are: the difficulty of managing academic team projects;the risk of unfairness in workload distribution across teams and in grading and evaluation;and a lack of experience for many instructors in how to manage team projects, as well as their fear of failing should they try. This panel will examine some challenges associated with managing semester-long or multi-semester whole-class projects with real clients and will present successful tools and techniques for managing such projects. We strongly believe that all computing students should experience significant and well-managed team projects as part of their programs of study. Together, the members of this panel have over 45 years of experience managing academic real-world team projects for real clients. We believe that tools and techniques such as the ones we will discuss can help instructors

关键词： Students

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Secure multiple deployment scheme in wireless sensor networks

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Beijing Gongye Daxue Xuebao / Journal of Beijing University of Technology 2009年第1期35卷 114-118页

作者： Li, Guo-Rui He, Jing-Sha Wang, Ying Fu, Ying-Fang College of Computer Science and Technology Beijing University of Technology Beijing 100124 China School of Software Engineering Beijing University of Technology Beijing 100124 China Department of Information Engineering Qinhuangdao Institute of Technology Qinhuangdao 066100 China

As a fundamental requirement for providing security functionality in sensor networks, key management plays a core supporting role in authentication and encryption. In this paper, we propose the Adaptive Key Selection (AKS) scheme and the Adaptive Key Selection algorithm for secure multiple deployment in sensor networks that target at providing high connectivity between different deployment sets of sensor nodes. Our simulation shows that the AKS scheme can greatly improve the connectivity of sensor nodes while maintaining the security of the multiple deployment sets at the same time.

关键词： Sensor nodes

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John D. Musa

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IEEE software 2009年第5期26卷 102-102页

作者： William Everett James Cusick Laurie Williams SPRE (Software Process and Reliability Engineering) Walters Kluwer Computer Science Department College of Engineering North Carolina State University USA

This article looks back at the life of John Musa, known for his work in software reliability engineering.

关键词： software reliability Reliability engineering

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Scoped Bellman-Ford Geographic Routing for Large Dynamic Wireless Sensor Networks

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Journal of computer science & Technology 2008年第6期23卷 944-956页

作者：张学洪爵陆桑璐谢立曹建农 State Key Laboratory for Novel Software Technology Department of Computer Science and TechnologyNanjing University Department of Electrical Engineering College of EngineeringNanjing Agricultural University Department of Computing Hong Kong Polytechnic University

Routing is a fundamental problem in wireless sensor networks. Most previous routing protocols are challenged when used in large dynamic networks as they suffer from either poor scalability or the void problem. In this paper, we propose a new geographic routing protocol, SBFR （Scoped Bellman-Ford Routing）, for large dynamic wireless sensor networks. The basic idea is that each node keeps a view scope of the network by computing distance vectors using the distributed Bellman- Ford method, and maintains a cost for routing to the sink. When forwarding a packet, a node picks the node with minimum cost in its routing table as a temporary landmark. While achieving good sealability, it also solves the void problem in an efficient manner through the combination of Bellman-Ford routing and cost-based geographic routing. Analytical and simulation results show that SBFR outperforms other routing protocols not only because of its robustness and scalability but also its practicality and simplicity.

关键词： Bellman-Ford geographic routing scalability void （hole） wireless sensor network

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On the Design and Temporal Petri Net Verification of Grid Commerce Architecture

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电子学报(英文版) 2008年第2期17卷 247-251页

作者： DU Yuyue JIANG Changjun College of Information Science and Engineering Shandong University of Science and Technology Qingdao 266510 China Department of Computer Science and Engineering Tongji University Shanghai 200092 China The State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing 100080 China

The emergence of Grid Computing settings lays a solid foundation for designing and constructing a next generation E-commerce environment. This work presents a new E-commerce architecture based on a Grid Computing environment, and models and analyzes the architecture using Temporal Petri nets (TPNs). It can make sufficiently use of the Grid resources to implement various electronic bargains between the geographically dispersed users. By means of its TPN model, some main temporal properties are represented and verified formally.

关键词：栅格计算电子商务模型化检验方法

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