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13th World Multi-conference on Systemics, Cybernetics and Informatics, WMSCI 2009, Jointly with the 15th international conference on Information Systems Analysis and Synthesis, ISAS 2009

作者： Doma, S.B. El-Borai, M.M. El-Sirafy, I.H. El-Sharif, A.H. Basic Science Department Faculty of Information Technology and Computer Sciences Sinai University North Sinai El-Arish Egypt Mathematics Department Faculty of Science Alexandria University Moharram Bay Alexandria Egypt

ISBN: (纸本)1934272612

We have investigated the motion of a stretched elastic rectangular membrane which is subjected to a restorative force proportional to the velocity. The perturbation method is applied to obtain the solutions of the problem in the form of summations of double Fourier series and the numerical solutions are given by using the program Mathematica.

关键词： Fourier series

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Numerical Simulation of Active Magnetic Regenerative Refrigerators

Numerical Simulation of Active Magnetic Regenerative Refrige...

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international conference on computer technology and development (icctd)

作者： Jianghong Wu Zheng Zhang School of Mechanical and Automotive Engineering South China University of Technology Guangzhou China

The paper presents a theoretical study of the heat transfer and thermodynamic performance for a rotary magnetic refrigerator with an active magnetic regenerator (AMR). The theoretical models were proposed for the refrigerator with AMR using two different kinds of heat transfer channel designs, one is packed gadolinium bed with porous magnetic materials, and another is packed gadolinium bed with micro heat pipe. Numerical results reveal heat transfer performance of AMR which is installed micro heat pipe is better than AMR which is packed with porous material. It shows that heat transfer increases with heat pipe numbers, low rotary frequencies are beneficial to heat transfer both in magnetization and demagnetization processes, but low rotary frequencies limits the output power of refrigerator, so the optimized rotary frequency is 10-15 rev. /minute. It has also been detected that the boundary layer in heat transfer fluid is seriously affected by the micro heat pipe location for larger convection coefficient conditions.

关键词： Numerical simulation Refrigerators Wireless sensor networks Batteries Sensor phenomena and characterization computerized monitoring computer architecture Energy consumption Chemical sensors Application software

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RETRACTED ARTICLE: Application research of data warehouse and its model design

RETRACTED ARTICLE: Application research of data warehouse an...

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1st international conference on Information Science and Engineering, ICISE2009

作者： Wang, Fu-Shan Department of Computer Dezhou University Dezhou Shandong 253023 China

ISBN: (纸本)9780769538877

With the development of information, large exponent ascend of information capacity make the traditional database retrieval query mechanism and statistics analysis methods not meet the need of reality. Under this background, data analysis methods were put forward and this made people have ability to know the genuine value of data. And, data analysis technology and data warehouse technology have been combined for exclusive decision service. So data warehouse and it's related techniques naturally become the hot point in the information field. The background, research contents and meaning of this paper is introduced. The basic concepts of data warehouse and its characteristic are studied, mainly including the system architecture and data organization. Then the key technologies of building the data warehouse are studied in theory and practice. And according to the building of the student electing-course data warehouse, the process of data warehouse design is elaborated in detail, mainly including the student electing-course model design techniques, concept model, logical model and physical model. ©2009 IEEE.

关键词： Classification (of information)

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Dynamic plan modelling and visualization: Converting an urban development plan into a transition scenario

Dynamic plan modelling and visualization: Converting an urba...

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13th international CAAD Futures conference: Joining Languages, Cultures and Visions, CAADFutures 2009

作者： De Vries, Bauke Jessurun, Joran Sadowski-Rasters, Gaby Eindhoven University of Technology Netherlands Municipality Eindhoven Netherlands

ISBN: (纸本)9782760621770

Application of 3D models in urban planning practice is still limited to visualization of existing or newly designed situations. Municipalities are looking for possibilities to communicate the transition process of the urban development area with the citizens. A prototype system was developed to investigate what the technical requirements are of such a tool and what the organizational consequences will be. As an example, screenshots are shown of a district in Eindhoven at different moments in time. Finally, recommendations are given on what is needed to turn the prototype into a professional tool. © pum, 2009.

关键词： Three dimensional computer graphics

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Application of MVP architecture in reengineering of legacy financial system

Application of MVP architecture in reengineering of legacy f...

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2009 international conference on Computational Intelligence and Software Engineering, CiSE 2009

作者： Wu, Bo Yang, Xiaohu College of Computer Science and Technology Zhejiang University Hangzhou China

ISBN: (纸本)9781424445073

As the progress of information technology, some financial systems used for long time can no longer meet the requirement of customers in both user interface and business process, and need reengineering imminently. In order to save the human resource and financial effort, this article raises a reengineering approach by encapsulating the back-end data access code of legacy system and only refactoring the front-end user interface and business logic. In the reengineering work, this article uses MVP (Model-View-Presenter) Architecture. By extracting screen logic into Presenters, the display code in View is independent from logic code in Presenter. Also, the introduction of MVP Architecture greatly enhances the reusability and the testability of business logic code, and finally improves the efficiency of development and test work significantly. ©2009 IEEE.

关键词： Legacy systems

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Adaptive Routing In Ad Hoc Wireless Networks Using Ant Colony Optimization

Adaptive Routing In Ad Hoc Wireless Networks Using Ant Colon...

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international conference on computer technology and development (icctd)

作者： Vahide Rajabi Zanjani Abolfazl Toroghi Haghighat Department of Computer and IT Islamic Azad University슠 Ghazvin Iran

This paper presents a new adaptive and dynamic routing algorithm called AAODV for mobile ad hoc networks inspired by Ant Colony Optimization algorithms. This algorithm is proposed by maintaining the nature of the Ad hoc On-demand Distance Vector (AODV) routing through the use of Ant Colony Optimization. AAODV maintains the on-demand nature of AODV but works in an adaptive manner. It does not send any Route Request packet that AODV does. Rather it identifies its paths with the feedback of previously traveled packets and updates and maintains the paths accordingly. This routing technique is a probabilistic adaptive technique that can change its route with the change of network topology by learning the environment. We evaluate AAODV algorithm by comparing it to AODV. Our simulations show that the AAODV algorithm provides better performance in average delay, packet loss, bandwidth overhead, and throughput than the AODV algorithm.

关键词： Routing Wireless networks Ant colony optimization Heuristic algorithms Mobile ad hoc networks Feedback Network topology Performance loss Delay Bandwidth

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Perspectives on Knowledge Sharing System for Special Interest Group (SIG): Culture, Power Issues and User Interface

Perspectives on Knowledge Sharing System for Special Interes...

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international conference on computer technology and development (icctd)

作者： Aisyah Ismail Shahida Sulaiman Maziani Sabudin School of Computer Sciences Universiti Sains Islam Malaysia Penang Malaysia

Electronic community (e-community) has been a vital platform among members of a special interest group (SIG). Compared to other interest groups, technical SIG groups require more beneficial communications and materials to be shared among the members. However, they may encounter a lot of challenges to draw the interest among the members in sharing their knowledge voluntarily. A lot of knowledge sharing researches focuses on how to develop a knowledge sharing system. Hence, they overlook the need to integrate social aspects in the design of such systems. As the result, the systems face inactive participants among the members. In fact, the most crucial part of developing such online communities is on how to encourage users to contribute and share their knowledge. We must discover the underlying problems on why the users are reluctant to share their knowledge through the knowledge sharing system. This paper discusses the survey conducted in order to gain users' perspectives towards such systems for SIG.

关键词： User interfaces computer interfaces Graphical user interfaces Portals Technological innovation Knowledge management Positron emission tomography Organizing Software engineering Maintenance engineering

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A Proposed Hybrid OCR System for Arabic and Indian Numerical Postal Codes

A Proposed Hybrid OCR System for Arabic and Indian Numerical...

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international conference on computer technology and development (icctd)

作者： Yasser M. Alginahi Abdul Ahad Siddiqi Department of Computer Science Taibah University Madinah Kingdom of Saudi Arabia

Arabic text recognition offers unique technical challenges and has been addressed more recently in the document analysis research field than other languages. Automatic Arabic/Indian numeral Optical Character Recognition (OCR) system for postal services are used in many countries, but still there are problems in such systems where machines still provide errors in reading the crucial information needed to distribute the mail efficiently. The need to investigate fast and efficient recognition methods is important so as to correctly read the postal codes from mail envelopes. The significance of this study is to recognize essential information, e.g., postal codes from the mail envelopes, by applying the OCR methods. The proposed system is a hybrid of three different feature extraction methods and classification methods. The proposed system, systematically compares the performance of each and every method, and makes sure that the numeral is recognized or rejected. The results provide a recognition rate of 99.4%.

关键词： Optical character recognition software Postal services Fuzzy neural networks Cities and towns Character recognition Feature extraction Automation Sorting computer science Text recognition

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Characterization of Internal Learning Parameters in Artificial Neural Networks

Characterization of Internal Learning Parameters in Artifici...

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Spring conference of the international-Association-of-computer-Science-and-Information-technology

作者： Mustafa, Raheela NED Univ Engn & Technol Dept Comp Sci & IT Karachi Pakistan

ISBN: (纸本)9780769536538

As modern computers become even more powerful, scientists continue to be challenged to use machines effectively for tasks that are relatively simple for humans. Based on examples, together with some feedback from a "teacher", we learn easily to recognize the letter A or distinguish a cat from a bird. More experience allows us to refine our responses and improve our performance. Although eventually, we may be able to describe rules by which we can make more decisions, these do not necessarily reflect the actual process we use. Even without a teacher we can group similar patterns together. Yet another common human activity is trying to achieve a goal that involves maximizing a resource (time with one's family, for example) while satisfying certain constraints (such as need to earn a living). Each of these types of problems illustrates tasks for which computer solutions may be sought. Traditional, sequential, logic based digital computing excels in many areas, but has been less successful for other types of problems. The development of artificial neural networks began approximately 50 years ago, motivated by a desire to try both to understand the brain and to emulate some of its strengths. [1]

关键词： teacher computer solution artificial neural networks

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Guest editorial special issue on transparent electronics

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IEEE/OSA Journal of Display technology 2009年第12期5卷 429-430页

作者： Garner, Sean M. Wu, Chung-Chih Hong, Yongtaek So, Franky Jiang, Xin Science and Technology Center Corning Inc. Corning NY 14831 United States Department of Electrical Engineering National Taiwan University Taipei City 10617 Taiwan Department of Electrical Engineering and Computer Science Seoul National University Seoul Korea Republic of Department of Material Science and Engineering University of Flourida Gainesville FL 32611 United States Institute of Material and Surface Engineering University of Siegen Siegen 57068 Germany

From material and design advancements to new innovative processing methods, there have been significant recent achievements in the area of transparent electronics. The papers in this issue focuses on this emerging technology and recent work in the field spanning from fundamental research to technology development. The articles cover the general topics of materials & performance, fabrication techniques, and devices & applications. Application articles focused on the benefits of transparent electronics display and organic light emitting diode devices.

关键词： Fabrication Flat panel displays Materials science and technology Electrical engineering Inorganic materials Costs Organic light emitting diodes Read only memory Photonic band gap Gallium nitride

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