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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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Investigation of vehicle seat with an active control system to minimize vertical vibrations to the head

Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japa...

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Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C 2012年第791期78卷 2396-2404页

作者： Ota, Shinichiro Nishiyama, Shuji Faculty of Computer Science and System Engineering Okayama Prefectural University 111 Kuboki Soja-shi Okayama 719-1197 Japan

This paper describes an active control system intended to minimize the vertical vibrations transferred from the vehicle seat to the head. This system controls mechanical properties effectively such as the spring constants and damping coefficients of the seat cushion by using an optimized algorithm that comprises vibration analysis and an optimization method. To estimate an efficient optimized algorithm, we investigate reduction rates of the vertical vibrations on the head using a vibration analysis based on a model for the seat-occupant system when the mechanical properties are controlled in a part of seat cushion. These results showed relationships between the reduction rates and the mechanical properties of the each seat cushion optimized at frequency band. In conclusion, the effective optimized algorithm using these relationships enable to reduce the vertical vibrations on the head while reducing the number of seat cushion control. ©2012 The Japan Society of Mechanical Engineers.

关键词： Vibration analysis

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Context Independent Expectation Maximization Algorithm for Segmentation of Brain MR Images

Context Independent Expectation Maximization Algorithm for S...

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International Conference on Advanced computer science Applications and Technologies (ACSAT)

作者： M. Masroor Ahmed Jasni Mohamad Zain M.T.A Rana Faculty of Computer Science and System Engineering Universiti Malaysia Pahang Malaysia Faculty of Electronic Engineering Mohammad Ali Jinnah University Islamabad Pakistan

For analyzing neurological disorders, realistic analysis of brain MRIs serves as a prerequisite step. This realistic analysis can be best described by segmenting the image into its constituent parts. Unfortunately, segmentation carried out by human visual system (HVS) is always influenced by certain factors. For example, inter-observer, intra-observer variability and large medical datasets. These factors make routine clinical applicability of HVS, a non practical way of examining MRIs. Therefore, to address this problem a fully automatic method is need of the hour. This paper discusses a highly efficient method i.e. the Expectation Maximization (EM) that precisely separates various parts of brain from a brain MRI. It works on the phenomenon of pixel labeling. The results obtained through this method are quite encouraging and are likely to contribute significantly in analyzing brain MRIs.

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RASID demo: A robust WLAN device-free passive motion detection system

RASID demo: A robust WLAN device-free passive motion detecti...

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IEEE Annual Conference on Pervasive Computing and Communications Workshops (PerCom)

作者： Ahmed E. Kosba Moustafa Youssef Department of Computer and System Engineering Faculty of Engineering Alexandria University Egypt Department of Computer Science and Engineering Egypt-Japan University of Science and Technology (E-JUST) Alexandria University Egypt

WLAN device-free passive (DfP) indoor localization is an emerging technology enabling the localization of entities that neither carry any devices nor participate actively in the localization process using the already installed wireless infrastructure. This technology can be promising for a variety of applications, where special hardware might not be applicable such as intrusion detection and smart homes. We present a demonstration of RASID, a system capable of detecting passive human motion using the already installed wireless networks. RASID uses statistical anomaly detection techniques to detect motion inside indoor environments. The system also is capable of adapting to the environment changes for enhancing its accuracy.

关键词： Monitoring Motion detection Humans Wireless LAN Robustness Electronic mail Conferences

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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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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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An adaptive policy-based approach for static and dynamic policy conflict detection: An implementation of location-based system

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 1-10页

作者： Mansor, Abdelhamid Abdelhadi Wan Kadir, Wan M.N. Anwar, Toni Elias, Hidayah Hassan, Khalid Department of Computer Sciences Faculty of Mathematical Sciences University of Khartoum Sudan Software Engineering Department Faculty of Computer Science and Information System Universiti Teknologi Malaysia Malaysia Wireless Communication Centre Faculty of Electrical Engineering Universiti Teknologi Malaysia Malaysia

The new paradigm in mobile services lies in providing a location-based user experience and here lies the tremendous scope for expansion of location-based services (LBS). One of the key approaches that have been recognized as an enabler of such a view is policy-based management, which has been mostly acknowledged as a methodology that provides adaptability and support to automatically assign network resources, control Quality of Service and security, by considering administratively specified rules. Whilst current research focuses mostly on rules for low-level device configuration, significant challenges remain to be addressed in order to provide dynamic adaptation of policy in response to changes and ensure that policies will lead to a feasible implementation within the managed environment. In this paper, the emphasis is on building the described environment using today's existing technologies. We use our policy-based framework PobMC to combine mobile (location-based) services, ubiquitous and autonomic computing concepts. The goal is to bring the kind of informationrich environment, which is currently limited to computer screens, to the real world. This is achieved by constructing an architecture based on existing wireless network technologies and Web applications. Location information of destinations and users is computed by the received signal strength indicator (RSSI) values of the Wi-Fi sensors, to provide adaptive services over wireless Web. The users use their mobile devices to access these location-based services.

关键词： Location based services

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Robust fingertip tracking for constructing an intelligent room

Robust fingertip tracking for constructing an intelligent ro...

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IEEE International Workshop on Robot and Human Communication (ROMAN)

作者： Hironori Takimoto Tatsuya Furukawa Mitsuyoshi Kishihara Kensuke Okubo Faculty of Computer Science and System Engineering Okayama Prefectural University Soja Okayama Japan Epson Corporation Japan

In a watch-over system, the machine has to detect intention of human user according to circumstance, and such detection has to be able to be achieved naturally without special interface gadget like a hand controller. Hence, in this paper, we propose a hand detection and fingertip tracking method for use in an intelligent room. We are constructing an intelligent room in which any user can control home appliances with intuitive gestures. The presented intelligent room is a room in which home appliances and an interaction monitoring robot for elderly people are operated using intuitive gestures, without any additional equipment and any restriction for positions. The proposed method detects the hand region from a range data, which is robust for environmental changing in complex background. Using weak classifiers, the shape of extracted hand and direction of the fingertip is estimated without needing to know the location of the face. These processes are computationally fast enough to track an object in real time. In addition, characters written on a virtual 2D plane by the user's finger movement were estimated using incremental simple PCA for operator recognition.

关键词： Shape Face Home appliances Principal component analysis Feature extraction Robustness Cameras

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Enhancing Discrete Event Simulation in multi-core processors environments using Multi-Dimensional Queue Mechanism

Enhancing Discrete Event Simulation in multi-core processors...

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International Conference on New Trends in Information and Service science, NISS

作者： Wong Ming Tat Chong Chun Yong Ling Teck Chaw Department of Computer System & Technology Faculty of Computer Science &Information Technology University Malaya Kuala Lumpur Malaysia Department of Software Engineering Faculty of Computer Science &Information Technology University Malaya Kuala Lumpur Malaysia

ISBN: (纸本)9781467308762

Discrete Event Simulation (DES) is a popular technique use in network simulation tools. Some of the popular queuing methods in DES are linked list, heap, splay tree and calendar based queue. Due to the design characteristic of discrete events and single sequential queue in DES, these queuing methods are unable to fully utilize the computing power of multi-core processors. This paper proposes Multi-Dimensional Queue Mechanism (MDQM) to counter the stated problem. The experimental results show improvement of simulation run time by using the proposed mechanism when running DES on multi-core processors environments.

关键词： Discrete event simulation Multi-Dimensional Queue Mechanism Multi-core Processors Network Simulation

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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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