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作者： escardó, Martín Oliva, Paulo School of Computer Science University of Birmingham Birmingham B15 2TT United Kingdom School of Electronic Engineering and Computer Science Queen Mary University of London London E1 4NS United Kingdom

This article gives an overview of recent work on the theory of selection functions. We explain the intuition behind these higher type ob.ects, and define a general notion of sequential game whose optimal strategies can be computed via a certain product of selection functions. Several instances of this game are considered in a variety of areas such as fixed point theory, topology, game theory, higher type computability and proof theory. These examples are intended to illustrate how the fundamental construction of optimal strategies based on products of selection functions permeates several research areas. © 2010 The Royal Society.

关键词： Game theory

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Impact of Global Warming on severity of Heat Stroke

Impact of Global Warming on severity of Heat Stroke

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International Conference on environmental science and Development（ICeSD 2011）

作者： Harishankar.N J.Srinivasan B.E Mechanical Engineering P.S.G College of Technology Coimbatore India. Divecha Centre for Climate Change Indian Institute of Science Bangalore India.Prof.

Heat stroke is defined as a condition in which the core body temperature rises beyond 40.6 °C （105.1 °F） due to environmental heat exposure with lack of thermoregulation. IPCC （Intergovernmental Panel on Climate Change） has reported that global mean temperature will rise by 3 0 C by 2100 which implies that heat exposure might be an important factor of concern in the near future. The industrial workers in tropical climate region are exposed to high heat during the months of summer. Hence to protect the workers, a study on the ill-effects and severity due to heat stroke and also development of guidelines for safe human exposure is imperative. Heat stress index predicts heat stroke by integrating the factors that defines thermal environment. WbGT （Wet-bulb Globe Temperature） is the most commonly used heat stress index at present. but it does not take into account the metabolic rate of individuals and also the latent heat loss. Latent heat loss by evaporation becomes a major source of thermoregulation at high temperatures. This paper focuses on the prediction of heat stroke from the perspective of latent heat loss due to sweat evaporation. It also deals with the significance of wind speed in industries and effects of global warming on heat stroke. The effects of free and forced convection for both present and future conditions are separately studied.

关键词： Heat stress index Latent heat loss by sweat evaporation free convection forced convection

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A Qos based routing using genetic algorithm

A Qos based routing using genetic algorithm

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2011 World Congress on Information and Communication Technologies, WICT 2011

作者： Punhani, Akash Nitin Department of Computer Science and Engineering F.E.T. R.B.S. College Bichpuri Agra Uttar Pradesh India Department of CSE and ICT Jaypee University of Information Technology Solan Himachal Pradesh India

ISBN: (纸本)9781467301251

Now-a-days the Most of the computer systems work in a network and the routing of the packets efficiently and pace fully is required to maintain the performance of the system. The performance of the system may vary from user to user as simple routing can work for simple transferring but as the new era techniques of come into existence new parameters came into existence like the bandwidth requirement for VoIP is one of them. Not only the bandwidth is the single requirement but on time packet delivery less loss of packets may also be the criteria. These all add some constrains into deciding the route of a packet from source to the destination. As we have the multiple criteria for evolution the prob.em of deciding the path becomes an NP hard prob.em. The Genetic Algorithms have b.en efficiently used for solving such type of Prob.em in Past. So an effort is made to solve the QOS Routing Prob.em using evolutionary algorithm using the different sorting techniques to improve the performance time of the most efficient algorithm that is NSGA II. The Proposed Algorithm is then compared with the already availab.e used for QOS routing like NSGA and NSGA II. © 2011 Ieee.

关键词： Genetic algorithms

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A semantics-based multi-agent framework for vehicular social network development

A semantics-based multi-agent framework for vehicular social...

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1st ACM International Symposium on Design and Analysis of Intelligent Vehicular Networks and Applications, DIVANet'11

作者： Hu, Xiping Zhao, Jidi Zhou, Dizhi Leung, Victor C. M. Dept. Electrical and Computer Engineering University of British Columbia Vancouver V6T 1Z4 Canada Institute of System Engineering Shanghai Jiaotong University Shanghai 200052 China Faculty of Computer Science University of New Brunswick Fredericton E3B 5A3 Canada

ISBN: (纸本)9781450309042

This paper proposes a semantic-based multi-agent framework to support development of vehicular social network applications. In the programming model of the framework, software platforms of vehicular social network systems can be developed by the collaboration of mobile agents and service (or resident) agents, where resident agents provide application services on devices and mobile agents provide communication services on behalf of owner applications. On top of the device infrastructure, the architecture of the proposed framework consists of three layers: framework service layer, software agent layer and application layer, to fully support dynamic and collaborative tasks of vehicular social networks. The multi-layer architecture design of the framework fully supports self-adaptive applications in vehicular social network environments, and is readily extensib.e to support new features. Developers can easily and effectively develop diverse applications for the vehicular social networks. Copyright 2011 ACM.

关键词： Semantics

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Use of Motion Capture for Path Gain Modelling of Millimetre-Wave On-body Communication Links

Use of Motion Capture for Path Gain Modelling of Millimetre-...

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International Symposium on Antennas and Propagation

作者： Yuriy Nechayev Costas Constantinou Srijittra Swaisaenyakorn Osman Rakibet John batchelor Peter Hall Clive Parini John Hunt Electronic Electrical and Computer Engineering University of Birmingham Edgbaston Birmingham B15 2TT United Kingdom Engineering and Digital Arts University of Kent Canterbury Kent CT2 7NZ United Kingdom School of Electronic Engineering and Computer Science Queen Mary University of London Mile End London E1 4NS United Kingdom Roke Manor Research Ltd Old Salisbury Lane Romsey Hants SO51 0ZN United Kingdom

ISBN: (纸本)9781467310017

The millimetre-wave band provides a few important advantages for body-centric communications. First of all, efficient high-gain antennas can be made sufficiently small to fit in small portab.e devices which can be worn on the body. Secondly, much more license-free bandwidth is availab.e in this frequency band and, therefore, data transfers can be much faster. This allows for quick transfer of video streams and large data files between body-worn devices (e.g. a portab.e video player or smart phone and a head mounted display). Finally, since millimetre waves attenuate quickly with distance compared to the other, lower, frequencies employed by wireless body-area networks (WbAN), they produce less interference to the other WbANs in the vicinity and provide better security of the communication links by significantly reducing the chances of malicious eavesdropping. This feature of millimetre-wave links is of utmost importance for WbANs used by military and security forces. It also allows for a largely reduced probability of a WbAN, and hence the soldier wearing it, being detected by enemy forces and offers some other advantages in military applications [1].

关键词： millimeter wave motion capture data transmission Telecommunication links Frequency bands Smartphone Military Personnel

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Document image retrieval using signature as query

Document image retrieval using signature as query

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2011 2nd International Conference on computer and Communication Technology, ICCCT-2011

作者： Shirdhonkar, M.S. Kokare, Manesh b. Dept. of Computer Science and Engineering B.L.D.E.A's V.P. Dr. P. G. Halakatti CET. Bijapur India Dept. of Electronics and Telecommunication S.G.G.S Institute of Engineering and Technology Nanded India

ISBN: (纸本)9781457713866

In this paper, we presents a new approach to document image retrieval based on signature. The database contains document images with english text combined with headlines, ruling lines, logo, trade mark and signature. In searching a repository of business documents, task of interest is that of using a query signature image to retrieve from a database. The signature retrieval task involves a two step process of extracting all the signatures from the document and performing a match on these signatures. We have proposed to use the rotated complex wavelet filters (RCWF) and dual tree complex wavelet transform (DT-CWT) together to derive signature feature extraction. In retrieval phase, Canberra distance measure is used. Further, relevance with query point movement (QPM) is used to improve the retrieval performance. experimental results shows that document image retrieval rate of proposed method is satisfactory. © 2011 Ieee.

关键词： Partial discharges

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Perceptual tolerance intersection

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Lecture Notes in computer science

作者： Wasilewski, Piotr Peters, James F. Ramanna, Sheela Computational Intelligence Laboratory Department of Electrical and Computer Engineering Univ. of Manitoba 75A Chancellor's Circle Winnipeg MB R3T 5V6 Canada Department of Applied Computer Science University of Winnipeg Winnipeg MB R3B 2E9 Canada

ISBN: (纸本)9783642183010

This paper elaborates on the introduction of perceptual tolerance intersection of sets as an example of a near set operation. Such operations are motivated by the need to consider similarities between digital images viewed as disjoint sets of points. The proposed approach is in keeping with work by e.C. Zeeman on tolerance spaces and visual perception and work by J.H. Poincaré on sets of similar sensations used to define representative spaces (aka tolerance spaces) such as visual, tactile and motile spaces. Perceptual tolerance intersection of sets is a direct consequence of recent work on near sets. The theory of perceptual set intersection has many practical applications such as a solution to the prob.em of how one goes about measuring the closeness of digital images. The main contribution of this article is a description-based approach to formulating perceptual set intersections between disjoint sets that resemb.e each other. A practical application of the proposed approach is the discovery of resemblances between sets of points in digital image regions that represent tolerance rough sets. © 2011 Springer-Verlag berlin Heidelberg.

关键词： Artificial intelligence

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Web applications testing framework based on multi-agent

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International Journal of Advancements in Computing Technology 2011年第10期3卷 403-412页

作者： Li, Junyi Sun, Lulu Liu, Shenglan Wei, Ruizhong College of Information Science and Engineering Hunan University hangsha 410082 China Department of Computer Science Lakehead University Thunder Bay ON P7B 5E1 Canada

Web technologies change the software industry drastically, more and more enterprises migrate their business systems to Web applications. Web applications testing plays an important role to guarantee the quality of Web applications. This paper proposes an intelligent testing framework (AeTFW) to instruct the whole process of Web applications testing. Along with elaborating on the functionality and working mechanism of each function module deployed in the framework, the design of multi-agent system architecture is presented in this paper, as well as the working mechanism of each agent deployed on different level. The presented multi-agent system can improve the automatic and intelligent level of the AeTFW framework via flexibly constructing or deleting different functional agents in the multi-agent system meanwhile reduce the testing complexity of Web applications through the cooperation and coordination mechanisms.

关键词： Multi agent systems

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An automatic test database generation algorithm based on RQP

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content Technology and its Applications 2011年第2期5卷 238-248页

作者： Li, Junyi Chen, Jian Xiong, Liping Wei, Ruizhong College of Information Science and Engineering Hunan University Changsha 410082 China Department of Computer Science Lakehead University Thunder BayON P7B 5E1 Canada

Software testing is one of key technologies to guarantee quality and reliability of software. Most computer applications are related to database application systems. Test database generation is an important research topic of database application testing. There are a number of commercial tools to automatically generate test databases. These tools take the database schema and tab.e sizes as input in order to generate new tuples. However, these tools often generate test databases which do not reflect the semantics of the application logic that should be tested. In this paper, we propose a test database generation algorithm based on RQP (Reverse Query Processing). Using database integrity constraints, our proposal first obtains data dependence of test data generation between separate tab.es in database, and then applies RQP to a top-down test database generation according to tester specified queries. The referential values in top tab.es are involved in test data generation of down tab.es when deriving tester specified queries. Algorithm analysis and case studies show that the test data generated from our new algorithm satisfies the database integrity constraints. The new algorithm improves the efficiency of the test database generation significantly, as well as follows the testing requirements of tester specified queries.

关键词： Query processing

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An experimental approach for synthesis of Fe-Al-O multiferroic fibrous material

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Journal of Physics: Conference Series 2012年第1期398卷

作者： N Starbov K Starbova Ph Vanderbemden P Simeonova V Lovchinov Institute of Solid State Physics Bulgarian Academy of Sciences 72 Tzarigradsko Chaussee Blvd. 1784 Sofia Bulgaria University of Liège S.U.P.R.A.T.E.C.S. Department of Electrical Engineering and Computer Science B28 Sart-Tilman Liège

basic principles of the electro-hydrodynamics are applied for synthesis of solid state Fe-Al-O multi-ferroic fibrous material. For that purpose stab.e b.end spinning solutions comprised of a high molecular assisting organic polymer and salts of iron and aluminum are developed. These solutions are tested under electrospinning conditions and synthesis of homogeneous as spun non-woven mats characterized by fib.e mean diameters in the micro-and nano-size range is successfully demonstrated. Multi-step thermal procedure is applied for the consecutive solvent evaporation, polymer pyrolisis and final fib.e calcination. electron-optical imaging technique and XRD are applied for revealing the sample morphology and the phase composition correspondingly. The results obtained outline the wide possibilities for fabrication of multi-ferroics fibrous nano-materials on the basis of Fe-Al-O.

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