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2012 IEEE International Conference on Cyber technology in Automation, Control, and Intelligent systems, CYBER 2012

作者： Sutiworwan, Surangrak Ruchanurucks, Miti Apiroop, Pongthorn Siddhichai, Supakorn Chanwimaluang, Thitiporn Sato, Makoto ICT for Embedded System Faculty of Engineering Kasetsart University Thailand Huawei Technologies Co. Ltd. Thailand Image Processing Laboratory National Electronics and Computer Technology Center Pathumthani Thailand Precision and Intelligence Laboratory Department of Information Processing Tokyo Institute of Technology Tokyo Japan

ISBN: (纸本)9781467314213

This research proposes a scheme of area calculation system, focusing on image warping to top view. The sensor attached to camera is used to compensate the camera's orientation in real time. One constraint is that the calculated area is planar surface. In practice, the alignment of sensor and camera is imperfect. This error makes the calculated area size inaccurate. Therefore, calibration between camera and sensor is required by using Iterative Least Square method. Then, the extrinsic parameters derived from calibrated sensor and pre-computed intrinsic parameter will be used to generate a homography matrix. In top view image, we can directly count the number of target pixel. Finally, we will also find the relationship between rotation angle and size of each pixel in real-world unit with calculating percentage accuracy of this method. The experimental results show top view target area size generated from the tilted camera using information from the orientation sensor in real time. © 2012 IEEE.

关键词： Cameras

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Push-Pull Zero-Voltage Switching Resonant DC-DC Converter Based on Half Bridge Class-DE Rectifier

Push-Pull Zero-Voltage Switching Resonant DC-DC Converter Ba...

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IEEE International Conference on Power Electronics and Drive systems

作者： Ratchuruethai Thippayanet Chainarin Ekkaravarodome Kamon Jirasereeamornkul Kosin Chamnongthai Marian K. Kazimierczuk Kohji Higuchi Department of Electronic and Telecommunication Engineering Faculty of Engineering King Mongkut's University of Technology Thonburi Bangkok Thailand Department of Instrumentation and Electronics Engineering Faculty of Engineering King Mongkut's University of Technology North Bangkok Bangkok Thailand Department of Electrical Engineering College of Engineering and Computer Science Wright State University Dayton Ohio USA Department of Mechanical Engineering and Intelligent System The University of Electro-Communications Tokyo Japan

ISBN: (纸本)9781467317900

This paper presents an analysis of parasitic capacitances in resonant rectifier which has significant impact on the operating point of the resonance circuit, which the junction capacitance is to decrease the resonant current and DC output voltage in the circuit at switching frequency less than resonant frequency. This can be represented by simplified series resonant equivalent circuit and voltage transfer function versus normalized operating frequency at varied values of resonant capacitor. The step-up resonant push-pull DC-DC converter was used as design example. The design procedure is based on the principle of the half bridge class-DE resonant rectifier. All power switches are operated under the zero-voltage switching conditions, resulting in higher overall system efficiency. The prototype of resonant DC-DC converter was operated at 62-88 kHz variable frequency, the input voltage of 12-V_(DC), the output voltage of 380-V_(DC) and the output power rated of 150 W. The experimental results have shown that 92.97% efficiency at full power. The experimental results are presented to verify the theoretical analysis.

关键词： Class-DE resonant rectifier push-pull resonant converter zero-voltage switching

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The Relationship between Users Cognitive Style and Information Seeking Behavior among Postgraduate Engineering Students

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Procedia - Social and Behavioral Sciences 2012年 56卷 461-465页

作者： Maryam Salarian Roliana Ibrahim Kourosh Nemati Faculty of Computer Science and Information System Universiti Teknologi Malaysia UTM Skudai 81310 Johor Malaysia Faculty of Engineering and Technology Islamic Azad University Nour Branch Iran

An important issue that absorbs many attentions is studying the users’ required information and their pattern of dynamic interaction with online search. The aim of this study is to identify the relationship between users’ cognitive style and information seeking. It is to enhance the quality of information presentation and users’ interactions in the Web by adapting their preferences and specific needs. This paper specifically focuses on the use of the Internet by postgraduate engineering students. The sample of this study consists of 50 postgraduate engineering students from the faculty of computer Science and Information system in Universiti Teknologi Malaysia. The findings of this study reveal the linear relationship between users’ cognitive styles and information seeking.

关键词： Cognitive style Engineering Students Information need Information Seeking

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Customer Relationship Management (CRM) implementation: A soft issue in knowledge management scenario

Customer Relationship Management (CRM) implementation: A sof...

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IEEE Colloquium on Humanities, Science and Engineering (CHUSER)

作者： Nor Hapiza Mohd Ariffin Abd Razak Hamdan Khairuddin Omar Norjansalika Janom Faculty of Computer and Mathematical Sciences Universiti Teknologi MARA Selangor Malaysia Faculty of Technology and Information System Universiti Kebangsaan Malaysia Selangor Malaysia

Knowledge Management (KM) implementation is mainly linked to soft issues such as organizational culture and people. Recently, most organizations are struggling to effectively use KM tools and techniques. Previous study shows that there is a relationship between KM and Customer Relationship Management (CRM). KM, in particular, has been defined as the process of capturing the collective expertise and intelligence in an organization and using them to foster innovation through continued organizational learning whereas obtaining customer-related knowledge is specified as the means to attain CRM objectives. Since a major part of that expertise and intelligence refers to customers, it is concluded that CRM is strongly related to KM and especially to customer knowledge management. CRM is a combination of people, processes and technology that seeks to understand a company's customers. CRM has evolved from advances in information technology and organizational changes in customer centric processes. Managing a successful CRM implementation requires an integrated and balanced approach to technology, processes and people. This paper discuss about the implementation of CRM in Research and Development Centers of Public Universities in Malaysia. The purpose of this study is to investigate the current scenario of CRM implementation Research and Development Centers of Public Universities in Malaysia and what are their challenges in its implementation. This study has conducted the structured interview session with top management of eight public universities. Besides, a questionnaire was distributed to the R & D staffs in those eight public universities. Statistical analysis was carried out on data collected from 40 completed questionnaires. Descriptive analysis and correlation test has been performed to investigate the hypotheses. This study indicates that organization CRM knowledge has a relationship with organizational issues such as human, culture, financial and technology issues. S

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Text mining in bioinformatics: Past, present and future

Text mining in bioinformatics: Past, present and future

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International Conference on Information Retrieval & Knowledge Management (CAMP)

作者： Hadee Faiiazee S.A.R. Al-Haddad Rusli Abdullah Khairulmizam Samsudin Department of Computer and Communication System Engineering Faculty of Engineering Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia Department of Computer and Communication System Engineering Faculty of Computer Science and Information Technology Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia

The peer-reviewed articles and textual data are main source of data in biology. Text mining is solution to extract information from textual data sources that are usually in bulky quantities, messy and disorganized. Dealing with this situation needs to deploy innovative methods and techniques. In this paper, we identify the current heavily used methods for biomedical text mining, their capabilities and developments, some proposed solution and how to evaluate performance. Biomedical specific challenges in text mining context have been studied with respect to proposed answers and then main future trends based on current needs and requirements have been discussed.

关键词： Text mining Bioinformatics Proteins Information retrieval Abstracts

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Decision making model for Electronic Tender Evaluation (eTE) using fuzzy AHP with extent analysis method

International Journal of Digital Content Technology and its ...

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International Journal of Digital Content technology and its Applications 2012年第22期6卷 79-89页

作者： Alias, Ros Haslinda Noor, Noor Maizura Mohamad Selamat, Ali Saman, Md. Yazid Mohd Abdullah, Mohd Lazim Computer Science Department Universiti Malaysia Terengganu Malaysia Software Engineering Department Faculty of Computer Science and Information System Universiti Teknologi Malaysia Malaysia Department of Mathematics Faculty of Science and Technology Universiti Malaysia Terengganu Malaysia

Transformation in procurement technique aims to create a sustainability development and innovative outsourcing strategy. It can increase the probability of project success with quality and give an added value in money and contract times. Wide range of issues should be considered in producing a sincere and trusted decision within respective agencies. Our research proposed a procurement transformation model for selecting the optimal result of contractor selection under multi criteria environments. The corresponding data are centralizing, easy to manage and can be updated accordingly. Fuzzy comparing judgment is used as the method to overcome the ambiguity aspects in selecting significant preferences by decision maker regarding to the subjective opinion. Decision making process is represented by the integration of evaluation model to produce a final result. Finally, the model was tested in tender evaluation processes to determine the most beneficial contractor to perform the construction project.

关键词： Contractors

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Energy-aware optimization of the number of clusters and cluster-heads in WSN

Energy-aware optimization of the number of clusters and clus...

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International Conference on Innovations in Information technology

作者： Hesham Abusaimeh Shuang-Hua Yang Computer Network System Department Faculty of Infomation technology Applied Science University Amman Jordan Computer Science Department Loughborough University Loughborough UK

Improving the network lifetime and saving energy are the performance measurement in designing any Wireless Sensor Network. Clustering the wireless sensor nodes and choosing leader nodes to aggregate the sending data are considered a main way of saving energy and increasing the network lifetime. Many researchers have worked on designing clustering protocols for the Wireless Sensor Network. However, few of the clustering algorithms have studied the numbers of clusters required in each network and the optimal cluster-heads in each cluster. Little of these clustering algorithms consider the energy level of the wireless sensor nodes to determine how many clusters are required in the network and which node should act as the optimal cluster-head of the cluster. In this paper, we have proposed a new technique to determine the number of clusters and choose the best node to be the cluster-heads in the Wireless Sensor Network based on the energy level of the wireless sensor nodes. We have compared this technique with the built-in cluster-tree technique in establishing the network and linking the nodes to each other in the latest sensor standard “ZigBee”. Based on the simulation results, the proposed clustering technique has increased the lifetime of the wireless sensor network by 50% in average comparing with the original lifetime of the cluster-tree network.

关键词： Conferences Technological innovation Information technology

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Femtocell network time synchronization protocols and schemes

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Research Journal of Applied Sciences, Engineering and technology 2012年第23期4卷 5136-5143页

作者： Hasan, Mohammad K. Saeed, Rashid A. Hashim, Aisha-Hassan A. Islam, Shayla Alsaqour, Raed A. Alahdal, Tariq A. Jalan Gombak 53100 Kuala Lumpur Malaysia Electronics Engineering Department Faculty of Engineering Sudan University of Science and Technology Sudan School of Computer Science Faculty of Information Science and Technology Universiti Kebangsaan Malaysia 43600 Bangi Selangor Malaysia Faculty of Computer Science and Information System Thamar University Thamar Yemen

The femtocell network allows connecting to cellular network through broadband connection. In femtocell, time with network synchronization becomes a critical issue at present. Synchronization is a process which is required in the femtocell network due to the shortcomings of centralized coordination between a number of femtocell Base Station (fBS) and clock synchronization server. Time synchronization procedure allows exchanging message that contains timestamp and delay measurement. There are several time synchronization protocols and algorithms based on precision which are Network Time Protocol (NTP), Simple Network Time Protocol (SNTP), IEEE 1588 Timing Protocol, enhancement of IEEE 1588 timing and receiverreceiver synchronization scheme. In this study, we investigated some of the time synchronization protocols and schemes for femtocell network. In addition, we proposed intra-cluster synchronization scheme to minimize the clock offset and skew for better synchronization accuracy. The proposed scheme is able to perform precise synchronization for clock offset and clock skew than the existing receiver-receiver synchronization scheme. © Maxwell Scientific Organization, 2012.

关键词： Femtocell

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Implementation of data mining approach for building automated decision support systems

Implementation of data mining approach for building automate...

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International Conference on Information Society (i-Society)

作者： Farrukh Saleem Abdullah Saad Al-Malaise Computer Science Department Faculty of Computer Science and Information Systems Universiti Teknologi Malaysia Malaysia Information System Department Faculty of Computing and Information Technology King Abdulaziz University Jeddah Saudi Arabia

Decision support systems (DSS) has remarkably increased in today's competitive business environment. Organizations are aggressively emphasizing on computerized support for building comprehensive automated DSS. The main purpose behind this approach is to build intelligent business and reduces the business pressure from the competitors. In this paper, we proposed a model for building efficient DSS with connection of data mining view. The presented model guide the business leaders to get extra support from data mining abstract to create effective DSS and compete the business world with more appropriate manner. Model represent the combination of DSS components and data mining tasks for the generation of better decisions, results, rules, and patterns from operational databases.

关键词： Decision support systems Data models Analytical models

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A generalised diffusion-based file replication scheme for load balancing in P2P file-sharing networks

A generalised diffusion-based file replication scheme for lo...

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作者： Takaoka, Masanori Uchida, Masato Ohnishi, Kei Oie, Yuji NCOS Laboratory NEC Communication Systems 1753 Shimonumabe Nakahara-ku Kawasaki Kanagawa 211-8666 Japan Department of Electrical Electronics and Computer Engineering Faculty of Engineering Chiba Institute of Technology 2-17-1 Tsudanuma Narashino-shi Chiba 275-0016 Japan Graduate School of Computer Science and System Engineering Kyushu Institute of Technology 680-4 Kawazu Iizuka Fukuoka 820-8502 Japan

We propose a generalised diffusion-based file replication scheme for load balancing in unstructured P2P file-sharing networks. The generalised method is derived by replacing the replication probability of a peer used in our previous study with a new expression. In the previous expression, the replication probability is defined to be proportional to the difference between its own load and the average load of its neighbour peers. We show here that the replication probability can instead be expressed as a simple average of one defined to be negatively proportional to its own load and one defined to be proportional to the average load of its neighbour peers. The generalised method (a) includes the above three methods as special cases, (b) can control the trade-off between search and load balancing performances, (c) has a physical analogy to diffusion phenomena, and (d) achieves a good balance in the trade-off differently from our previous method. Copyright © 2012 Inderscience Enterprises Ltd.

关键词： Economic and social effects

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