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engineering installation works on FTTH-PON laboratory test bed: Case study

Journal of Applied Sciences 2010年第1期10卷 29-36页

作者： Ab-Rahman, M.S. Ng, B.C. Kasimin, R. Jumari, K. Spectrum Technology Research Division Computer and Network Security Research Group Department of Electrical Electronic and System Engineering Faculty of Engineering and Built Environment Universiti Kebasgsaan Malaysia 43600 UKM Bangi Selangor Malaysia

This study introduces a low cost technique for testing and monitoring process that can be applied specifically for Fiber-to-the-Home Passive Optical network (FTTH-PON). The simplest and low cost method would be using a Optical Power Meter (OPM) which is able to detect the total loss on the network. However, to identify faulty sections of a network, segmentation need to be done together with the optical power meter. Another testing and troubleshooting method would be using the Optical Time-Domain Reflectometer (OTDR). The OTDR within the network is able to detect the component that causes losses in the network. However, elements acting as a power splitter are not being able to be detected by the OTDR. Therefore, the Access Control System (ACS) is developed to bypass those elements and allows the use of OTDR entirely. This method is proven to be a faster method than the first. Additionally, it can be upgraded to monitor the line status by accumulate all the result in one display computer screen. But this mechanism is not interested to be discussed detail in this study. The new configuration of FTTH is named as modified FTTH. In the end, we compare the installation cost between the conventional and modified FTTH for different network size according to number of users. © Asian network for Scientific Information.

关键词： Fiber to the x

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A Novel RSS-Based Indoor Positioning Algorithm Using Mobility Prediction

A Novel RSS-Based Indoor Positioning Algorithm Using Mobilit...

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International Conference on Parallel Processing Workshops (ICPPW)

作者： Lyu-Han Chen Gen-Huey Chen Ming-Hui Jin Eric Hsiao-Kuang Wu Department of Computer Science and Information Engineering National Taiwan University Taiwan Network and Multimedia Institute Institute for Information Industry Taiwan

Severe received signal strength (RSS) fluctuation is one of the crucial problems in an indoor positioning system using fingerprint-based algorithms. Even at a fixed location, the RSSs received by a mobile device at different time have large discrepancy. Adopting these fluctuated signals for positioning may lead to inaccurate results. To mitigate this problem, in this paper, any of the existing fingerprint-based indoor positioning algorithms can be integrated into our positioning system to estimate the location of mobile device. Then, a mobility prediction algorithm using the model of Brownian motion is presented for further calculating the rationality of the estimated location and correcting the inaccurate results. To be realistic, some experiments in a real WLAN environment with a multitude of people moving in a testing area demonstrate the noticeably better accuracy of this approach. The solution can ensure low and stable positioning error. Besides, the region where training records are out of date can also be found out.

关键词： Mobile handsets Fingerprint recognition Fluctuations Accuracy Signal processing algorithms Prediction algorithms Estimation

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A supervised learning approach to the unsupervised clustering of genes

A supervised learning approach to the unsupervised clusterin...

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IEEE International Conference on Bioinformatics and Biomedicine (BIBM)

作者： Andrew Rider Geoffrey Siwo Scott Emrich Michael Ferdig Nitesh V. Chawla Habtom Interdisciplinary Center for Network Science and Applications Notre Dame IN USA Eck Institute for Global Health Department of Computer Science and Engineering

Clustering is a common step in the analysis of microarray data. Microarrays enable simultaneous high-throughput measurement of the expression level of genes. These data can be used to explore relationships between genes and can guide development of drugs and further research. A typical first step in the analysis of these data is to use an agglomerative hierarchical clustering algorithm on the correlation between all gene pairs. While this simple approach has been successful it fails to identify many genetic interactions that may be important for drug design and other important applications. We present an approach to the clustering of expression data that utilizes known gene-gene interaction data to improve results for already commonly used clustering techniques. The approach creates an ensemble similarity measure that can be used as input to common clustering techniques and provides results with increased biological significance while not altering the clustering approach at all.

关键词： Clustering algorithms Correlation Size measurement Biology Gold Couplings Drugs

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Research on language model of long-distance dependency

Research on language model of long-distance dependency

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2010 International Conference on Advances in Energy engineering, ICAEE 2010

作者： Xu, Zhi Hai Xie, Jian Ge, Wei Hu, Chun Network Center Nan Chang University Nan Chang 330031 China Dept. of Information Engineering Jiangxi Vocational and Technical College of Electricity Nang Chang 330032 China Computer Science Department Jiang Xi Radio and Television University Nang Chang 330046 China Network Center Jiangxi Science and Technology Normal University Nan Chang 330013 China

In this paper, we discussed current situation and problems of the statistical language models. And then the development and realization methods of the long-distance dependency language model simply introduced At last ... 详细信息

ISBN: (纸本)9781424478309

关键词： Natural language processing systems

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Improving Directed Diffusion in sensor network using learning automata: DDLA new approach in Directed Diffusion

Improving Directed Diffusion in sensor network using learnin...

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International Conference on computer Technology and Development (ICCTD)

作者： Ali Sayyad Mohammad Shojafar Zia Delkhah Mohammad Reza Meybodi Information Technology Network Engineering Computer & Electrical Department Islamic Azad University of Qazvin Qazvin Iran Computer Science. Computer & IT. Department Amirkabir University of Technology슠 Tehran Iran

One of the important and challenging matters in sensor network is energy of life span of nodes in the network. Node's movement, specifically movement of central node (sink) in these networks cause to increase routing updating overhead and consequently to increase power consumption and to decrease network life span. Directed Diffusion algorithm is one of methods in sensor network which is a data-oriented algorithm. One of the important definitions of basic algorithm is not supporting central node's movement. In case of movement of central node, data packs pass on unreliable rout toward central node. In fact, they pass a rout on which the central node is not present at the time being and it has moved to another place. Therefore, route of data is out of order and there is the need to build new routes. This problem causes to create lots of overhead and waste energy. In this article, it is tried to solve mentioned problem of central node's movement by learning automata. In suggested algorithm by learning automata a route amendment tree is built which prevents from creation of the whole route and its overhead.

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Improvement multiplicity of routs in directed diffusion by learning automata new approach in directed diffusion

Improvement multiplicity of routs in directed diffusion by l...

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International Conference on computer Technology and Development (ICCTD)

作者： Ali Sayyad Mohammad Shojafar Ali Ahmadi Mohammad Reza Meybodi Information Technology Network Engineering Computer & Electrical Department Islamic Azad University of Qazvin Qazvin Iran Computer science. Computer & IT. Department Amirkabir University of Technology슠 Tehran Iran

One of the important and challenging matters in sensor network is energy of life span of nodes in the network. Directed routing algorithm is one of propounded methods in sensor networks which are a data-oriented algorithm. This algorithm focuses on saving energy within life span of network nodes. One of problems of directed diffusion method is existence of multiple routes. Now, consider that some sinks from the same origin request the same data who's Data Volume is very much. Directed routing algorithm establishes one route toward targeted route for each query. The problem of this algorithm is multiplicity of routes for the same data. Therefore, if we can establish a route which has the most common feature with regards to nodes which forms the route, we have prevented wasting energy. In this paper, it is tried to remove problem of multiplicity of routes for the same data by learning automata. We named this algorithm RDDLA. RDDLA decrease overhead and energy in the network Considerable against with some others methods.

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The sixth annual MLSP competition, 2010

The sixth annual MLSP competition, 2010

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IEEE Workshop on Machine Learning for Signal Processing

作者： Kenneth E. Hild Mikko Kurimo Vince D. Calhoun Department of Biomedical Engineering Oregon Health and Sciences University Portland OR USA Department of Information and Computer Science Aalto University Finland Mind Research Network Albuquerque NM USA Department of Electrical and Computer Engineering University of New Mexico Albuquerque NM USA

For the Sixth Annual Machine Learning for Signal Processing competition, sponsored by Nokia and PASCAL2, entrants were asked to develop a classifier, with optional feature extraction, that uses electroencephalography (EEG) data collected during an image presentation (visual odd-ball) task and optimally determines whether each image presented to a user contains or does not contain a pre-specified target. In this paper, we (the organizers of the competition) briefly describe the application, the data, the rules, and the outcomes of the competition. A total of 35 teams entered the contest. Training data were provided. The entries were tested using disjoint test data. The three teams with the best performing entries describe the approach they used in three separate companion papers, all of which appear in this year's conference proceedings.

关键词： Support vector machines Multimedia communication

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Sustainable approach to segmented digital display: Complete, precise and economic

Sustainable approach to segmented digital display: Complete,...

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International Conference on computer and Information Technology (ICCIT)

作者： Fariha Tasmin Jaigirdar Mohammad Abdul Hadi Bhuiyan Shahid Al Noor Department of Computer Science Stamford University Dhaka Bangladesh Engineering Intelligent Network Nokia Siemens Networks Inc. Dhaka Bangladesh

Different approaches have been proposed for digital display of bangla numerals and also characters. But a complete and accurate scheme not has been done yet. We approach a complete low cost and fair design to display bangla numerals, bangla characters (vowel, consonant and shortened form of these characters), also English and Arabic numerals and all English character's represented as 120 character displayed by only 34 segments with tiny bits of binary code and differently usable architecture made this approach favorable. This scheme can be effectively used instead of other alternatives as less complex, economic and complete. With this framework, other characters also can be displayed as manufacturer specification.

关键词： Accuracy DH-HEMTs Economics Shape Minimization computer architecture Complexity theory

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Adaptive Wireless Multimedia Communications with Context-Awareness Using Ontology-Based Models

Adaptive Wireless Multimedia Communications with Context-Awa...

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2010 IEEE Global Telecommunications Conference GLOBECOM 2010

作者： Haiyan Luo Song Ci Dalei Wu Hui Tang Department of Computer and Electronics Engineering University of Nebraska Lincoln USA High Performance Network Laboratory IOA Chinese Academy and Sciences China

The increasing popularity of ubiquitous, interconnected computing devices such as laptops, PDAs, and 3G mobile phones is fostering the emergence of environments where people access their personal information, corporate data and public resources "anytime" and "anywhere". Context, an important concept that can be any information regarding the situation and environment, is often exploited by human beings for communications and actions. Context-aware services have been proposed in the computing field to adapt system behaviors based on the retrieved context data. Although different context-aware systems have been presented in literature, this paper moves one step further by building an adaptive wireless multimedia system with context-awareness using ontology-based models. The proposed system can adapt its behaviors according to the changes of various context data. First, it chooses the appropriate video content based on the retrieved static context data such as user's profile, location, time, and weather forecast. Then, dynamic media adaption is performed to greatly improve the video quality perceived by the end user by adapting to various context data such as varying wireless channel quality, available energy of the end equipment, network congestion and application Quality of Services (QoS). To verify the effectiveness of proposed system, a test bench and its experimental results are also described.

关键词： Context Streaming media Multimedia communication Wireless communication Context modeling Mobile communication

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A sports E-learning Platform: Teaching and learning by using multimedia contents

A sports E-learning Platform: Teaching and learning by using...

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2010 3rd IEEE International Conference on Ubi-Media Computing, U-Media 2010

作者： Huang, Chun-Hong Chiu, Chuan-Feng Chin, Su-Li Hsin, Li-Hua Yu, Yi-Pei Dept. of Computer Information and Network Engineering Lunghwa University of Science and Technology Taiwan Department and Institute of Information Management Minghsin University of Science and Technology Taiwan Dept. of Physical Education Tamkang University Taiwan Physical Education Office Lunghwa University of Science and Technology Taiwan

ISBN: (纸本)9781424467068

The major purpose of this paper is to establish a Sports E-learning Platform in order to provide athletic related teaching materials, such as physical motions and exercise rules. The platform can integrate the Multimedia teaching materials which include video and 2D animation. Multimedia contents of teaching material not only increase the learning efficient but also the interesting of learning, especially in the area of Physical Education. The design concept of our works is based on ADDIE model of ISD (Instruction System Design) theory with the purposes of analysis, design, development, implementation, & evaluation. Via the usage of this physical education E-learning platform, we hope to let players perform efficient self learning for sports skills, indirectly foster mutual help, cooperation, nice norms of law-abiding via the learning of athletic rules, and become skilled at accurate recreation knowledge & first aid expertise. Moreover, coaches can use this system as a teaching facility. © 2010 IEEE.

关键词： Sports

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