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Electronic Components and Technology Conference (ECTC)

作者： Xiangdong Xue Silvia Marson Mayur K Patel Usama M Attia Chris Bailey William O'Neill David Topham Marc P. Y. Desmulliez School of Computing and Mathematical Sciences University of Greenwich London UK Department of Materials Cranfield University Cranfield Bedfordshire UK Institute for Manufacturing Department of Engineering University of Cambridge Cambridge UK School of Engineering and Design Brunei University Uxbridge Middlesex UK MISEC School of Engineering & Physical Sciences Heriot-Watt University Edinburgh UK

This paper describes the design and development cycle of a 3D biochip separator and the modelling analysis of flow behaviour in the biochip microchannel features. The focus is on identifying the difference between 2D and 3D implementations as well as developing basic forms of 3D microfluidic separators. Five variants, based around the device are proposed and analysed. These include three variations of the branch channels (circular, rectangular, disc) and two variations of the main channel (solid and concentric). Ignoring the initial transient behaviour and assuming steady state flow has been established, the efficiencies of the flow between the main and side channels for the different designs are analysed and compared with regard to relevant bio-microfluidic laws or effects (bifurcation law, Fahraeus effect, cell-free phenomenon, bending channel effect and laminar flow behaviour). The modelling results identify flow features in microchannels, a constriction and bifurcations and show detailed differences in flow fields between the various designs. The manufacturing process using injection moulding for the initial base case design is also presented and discussed. The work reported here is supported as part of the UK funded 3D-MINTEGRATION project.

关键词： Microchannel Numerical analysis Particle separators Bifurcation Microfluidics Solids Transient analysis Steady-state Manufacturing processes Injection molding

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Multi-Layered Social Network Creation Based on Bibliographic Data

Multi-Layered Social Network Creation Based on Bibliographic...

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IEEE International Conference on Social computing (SocialCom)

作者： Przemysaw Kazienko Piotr Bródka Katarzyna Musial Jarosaw Gaworecki Institute of Informatics Wroclaw University of Technology Wroclaw Poland Research & Engineering Center Wroclaw Poland Telnet Sp. z O.O. Wroclaw School of Design Engineering & Computing Bournemouth University Poole United Kingdom

A method for extraction of the multi-layered social network based on the data about human collaborative achievements, in particular scientific papers, is presented in the paper. The objects linking people form a hierarchy, which is flattened in the pre-processing stage. Only one level of the hierarchy remains together with new activities moved from its other levels. Separate layers of the multi-layered social network are created based on these pre-processed activities.

关键词： Social network services Tin Data mining Books Feature extraction Electronic mail Object recognition

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3D mesh segmentation based on boundary strength

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Ruan Jian Xue Bao/Journal of Software 2010年第SUPPL. 1期21卷 183-193页

作者： Sun, Xiao-Peng Ji, Yan-Jie Wei, Xiao-Peng Department of Computer and Information Technology Liaoning Normal University Dalian 116029 China School of Mechanical and Engineering Dalian University of Technology Dalian 116024 China Key Laboratory of Advanced Design and Intelligent Computing Dalian University Dalian 116622 China

In this paper, we present a novel and fast algorithm for 3D meshes segmentation based on the geometric information of boundary. Firstly, according to the topological relationship of original mesh faces, we construct the dual graph, and set the weight of vertex and edge on the basis of geometric information of mesh faces. Using the k-way multilevel cutting method, we segment the dual graph quickly to obtain the pre-segmentation and initial boundary for each patch. Then we define the boundary strength function and the feature boundary of each patch, to construct a deformation contour on the patch's boundary. By minimizing the energy of the deformation contour, the initial boundary is driven to approach the feature boundary. Finally, the original mesh is segmented into several meaningful patches in accordance with the minimal rule. The experiment results suggest that our algorithm is efficient and effective, and is applicable to a variety of triangular mesh models with prominent shape features. © by Institute of Software, the Chinese Academy of Sciences.

关键词： Deformation

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Individual neighbourhood exploration in complex multi-layered social network

Individual neighbourhood exploration in complex multi-layere...

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2010 3rd IEEE/WIC/ACM International Conference on Web Intelligence and Intelligent Agent Technology - Workshops, WI-IAT 2010

作者： Kazienko, Przemyslaw Brodka, Piotr Musial, Katarzyna Institute of Informatics Wroclaw University of Technology Wyb. Wyspianskiego 27 50-370 Wroclaw Poland School of Design Engineering and Computing Bournemouth University Poole Dorset BH12 5BB United Kingdom Telnet Sp. z o.o. Obrońców Poczty Gdańskiej 13a 52-204 Wroclaw Poland

ISBN: (纸本)9780769541914

Social networks can be extracted from different data about communication or common activities in organizations, companies or various Internet-based services. Different types of data processed may result in creation of separate layers in the complex multi-layered social network. Analysis of neighbourhoods of network members and their utilization to social group discovery appears to be an interesting and important research domain. Since there is no measure to evaluate structure of the neighbourhoods in the multi-layered social network, a new measure called cross layered multi-layered clustering coefficient (CLMCC) is proposed in the paper. It enables to analyse the density of mutual connections of neighbours that occur in at least a given number of layers in a social network. Additionally, experimental studies on real-world data are presented. © 2010 IEEE.

关键词： Network layers

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An Image Encryption Algorithm Based on DNA Self-Assembly Technology

An Image Encryption Algorithm Based on DNA Self-Assembly Tec...

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2010 IEEE International Conference on Intelligent computing and Intelligent Systems(2010 IEEE 智能计算与智能系统国际会议 ICIS 2010)

作者： Shihua Zhou Qiang Zhang Xiaopeng Wei School of Mechanical Engineering Dalian University of Technology Dalian P.R.China Key Laboratory of Key Laboratory of Advanced Design and Intelligent Computing (Dalian University)Ministry of Education School of Mechanical Engineering Dalian University of Technology Dalian P.R.China Key Laboratory of

DNA self-assembly that is fast developed in the fields of DNA computing and nano technology has become the focus of scientific fields. DNA self-assembly is a method that uses the characteristics of base-pair to form polyhedron or super molecular structure. This is a complex progress from disordered to ***, from simple to complicated. This paper mainly introduces that the DNA self-assembly technology is applied into the image encryption. In this paper, we proposed a complete design scheme of DNA tiles that is suitable for the image encryption. The DNA tiles mainly include five types, namely DNA tiles of the plaintext, DNA tiles of the encryption, DNA tiles of the cipertext, DNA tiles of the key and DNA tiles of the decryption. Through a simulate example, the effect of the image encryption algorithm is shown.

关键词： image encryption DNA serf-assembly technology DNA tiles

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Experiences with a transportation information system that uses only GPS and SMS 10

Experiences with a transportation information system that us...

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4th ACM/IEEE International Conference on Information and Communication Technologies and Development, ICTD 2010

作者： Anderson, Ruth E. Brunette, Waylon Johnson, Erica Lustig, Caitlin Poon, Anthony Putnam, Cynthia Salihbaeva, Odina Kolko, Beth E. Borriello, Gaetano Dept. of Computer Science and Engineering University of Washington Seattle WA 98195 United States Global Studies University of North Carolina Chapel Hill NC 27599 United States School of Information and Computer Sciences University of California Irvine CA 92697 United States College of Computing and Digital Media DePaul University Chicago IL 60604 United States Jackson School of International Studies University of Washington Seattle WA 98195 United States Dept. of Human Centered Design and Engineering University of Washington Seattle WA 98195 United States

ISBN: (纸本)9781450307871

We present our experiences with an SMS-based system for providing transit information based solely on existing cellular and GPS networks. The aim is to permit the development of information services that do not rely on a central authority or complex web hosting. We developed and applied our system to the network of privately-run marshrutka buses in Bishkek, Kyrgyzstan. However, our goal is to more broadly address issues of ad-hoc shared transportation systems in the developing world. A custom designed GPS-GSM unit is placed on a vehicle, and users can query our server over SMS with their own non-GPS-enabled cell phones. We report on the accuracy of our location naming approach and estimates of bus arrival times. In addition, we summarize interviews with bus drivers and bus riders relating their views of the system and outline directions for future work. Our system is a grassroots solution to the persistent lack of transport information in developing countries. Copyright 2010 ACM.

关键词： Buses

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Automatic detection of defects in ultrasonic testing sing artificial neural network

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International Journal of Microstructure and Materials Properties 2010年第6期5卷 561-574页

作者： Sambath, S. Nagaraj, P. Selvakumar, N. Arunachalam, S. Page, T. Department of Mechanical Engineering Epco Schlenk Engineering College Sivakasi - 626005 Tamilnadu India School of Computing and Technology University of East London London E16 2RD United Kingdom Department of Design and Technology Loughborough University Loughborough Leicestershire LE11 3TU United Kingdom

An artificial neural network with signal processing technique is proposed to improve the sensibility of flaw detection and to classify defects in ultrasonic testing. Features for discrimination of detected echoes are extracted in discrete wavelet representation and are then classified using ANN. The inputs of the ANN are the features extracted from each ultrasonic oscillogram. Two different types of defect are initially considered namely crack and porosity. The training of the ANN uses supervised learning mechanism and therefore each input has the respective desired output. The available dataset is randomly split into a training subset (to update the weight values) and a validation subset. With the wavelet features and ANN good classification at the rate of 96% is obtained. According to the results the algorithms developed and applied to ultrasonic signals are highly reliable and precise for online quality monitoring. Copyright © 2010 Inderscience Enterprises Ltd.

关键词： Neural networks

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designing and evaluating affective aspects of sociable media to support social connectedness

Designing and evaluating affective aspects of sociable media...

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28th Annual CHI Conference on Human Factors in computing Systems, CHI 2010

作者： Visser, Thomas Dadlani, Pavan Van Bel, Daan Yarosh, Svetlana ID StudioLab Industrial Design Engineering Delft University of Technology Landbergstraat 15 2628 CE Delft Netherlands Connected Consumer Solutions Philips Research High Tech. Campus 34 5656 AE Eindhoven Netherlands Human Technology Interaction Eindhoven University of Technology P.O. Box 512 5600 MB Eindhoven Netherlands School of Interactive Computing Georgia Institute of Technology 85 5th Street NW Atlanta GA 30332 United States

ISBN: (纸本)9781605589312

The use of sociable media for supporting social connectedness has been a serious subject of study for researchers and designers in recent years. Social connectedness is considered to be the momentary experience of belongingness and relatedness with others. Particular user groups may benefit from support in social connectedness, such as elderly or divorced parents and their children. Several research projects have made efforts to support social connectedness. However, there have been few formal studies into the factors affecting connectedness. Also, the way in which social connectedness has been measured in studies to date is diverse and often not grounded in psychological theory. This shows a need for more elaborate investigation in how social connectedness can be measured, what types of content could be shared between users, and which interactions should be provided by a system, when aiming for social connectedness. This should lead to guidelines and an ontology of elements to help and inspire designers of social connectedness systems. © 2010 Copyright is held by the author/owner(s).

关键词： Computation theory

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A GRASP algorithm for the integration of process planning and scheduling in a flexible job-shop

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International Journal of Manufacturing Research 2010年第2期5卷 230-251页

作者： Rajkumar, M. Asokan, P. Page, T. Arunachalam, S. Department of Production Engineering National Institute of Technology Tiruchirappalli 620 015 Tamil Nadu India Department of Design and Technology Loughborough University Loughborough Leicestershire LE11 3TU United Kingdom School of Computing Information Technology and Engineering 4-6 University Way Beckton London E16 2RD United Kingdom Department of Manufacturing Systems Engineering University of East London United Kingdom

The Integration of Process Planning and Scheduling (IPPS) is an important research issue in achieving optimum manufacturing processes. In IPPS, vast search spaces and complex technical constraints prove to be significant barriers to the effectiveness of the processes. This paper proposes a Greedy Randomised Adaptive Search Procedures (GRASP) algorithm for the integration of process planning with production scheduling in a flexible job-shop environment. The GRASP algorithm is a metaheuristic characterised by multiple initialisations. Basically, it comprises two phases: construction phase and local search phase. For this work, the construction phase is considered through computational experiments. The performance of the presented algorithm is evaluated and compared with benchmark problem and the results demonstrate that the proposed algorithm is an effective and practical approach for the flexible job-shop. Copyright © 2010 Inderscience Enterprises Ltd.

关键词： Production control

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Multi-objective optimization conceptual design of solar energy product based on hybrid genetic algorithm

Multi-objective optimization conceptual design of solar ener...

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International Conference on Computer design and Applications (ICCDA)

作者： Tingting Zhao Zhenhe Ju Xiaopeng Wei Shi Zhang Shuaijie Wang Xiaoxiao Li School of Management Dalian University of Technology Dalian China Key Laboratory of Advanced Design and Intelligent Computing Ministry of Education Dalian University Dalian China New Energy Center Shenyang Institute of Engineering Shenyang China Institute of Systems Engineering College of Information Science and Engineering Northeastern University Shenyang China Department of study Liaoning Solar Energy R and D Company Limited Shenyang China

ISBN: (纸本)9781424471645;9781424471638

For research on conceptual design of the complex product, it is necessary that a reliable theory is found to decide if the design structure is suit for custom requirement. The correlation matrixes among requirements, functions and structures are proposed. A block diagonal matrix of correlation matrix between functions and structures is given. The mathematical models of multi-object optimization structure design are provided, and then calculated by the hybrid genetic algorithm. An example for solar energy automobile is given to show that this method is able to realize optimization structure design fitting for the requirements. In addition, the approaches can provide good Pareto optimization solutions.

关键词： design optimization Algorithm design and analysis Solar energy Genetic algorithms Genetic engineering design engineering Power engineering and energy Mathematics Pareto optimization Reliability engineering

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