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Curriculum container system: A system to support curriculum and learning activity management

Curriculum container system: A system to support curriculum ...

引用

5th IEEE International Conference on Advanced Learning Technologies, ICALT 2005

作者： Wu, Yu-Ting Ku, Yang-Ming Chen, Yen-Hua Wu, Jung-Feng Chan, Tak-Wai Wang, Jen-Han Graduate Institute of Network Learning Technology National Central University Jhong-Li Taiwan Dept. of Computer Science and Information Engineering National Central University Jhong-Li Taiwan

ISBN: (纸本)0769523382

There are much more learning materials and learning activities in the recent elementary curriculum then past. Then it becomes heavy loads for teachers to prepare and arrange the teaching plan, and students feel more complex to capture learning progress of the curriculum. We design a curriculum and activity management system, which supports the management of the curriculum for teachers and help students catch key points of the course. With the using of this system, they can pay more attention on curriculum progressing. © 2005 IEEE.

关键词： Learning systems

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Location-sensitive tour guide services using the semantic Web

Location-sensitive tour guide services using the semantic We...

引用

9th International Conference on Knowledge-Based Intelligent information and engineering systems, KES 2005

作者： Kim, Jong-Woo Kim, Ju-Yeon Hwang, Hyun-Suk Kim, Chang-Soo Pukyong National University Interdisciplinary Program of Information Security Korea Republic of Pukyong National University Institute of Engineering Research Korea Republic of Pukyong National University Dept. of Computer Science Korea Republic of

The tour guide services are a LBS application that provides the information based on the location of users. The recent researches of the tour guide services focus on the context-sensitive computing, but the tour guide services based on HTML contents can provide only the static information. Therefore, the goals of our research are to semantically search the information. For the purpose, we describe the ontologies of the tour guide services, and express the tour information as the RDF contents based on the ontologies. In this paper, we present the architecture of the tour information Services based on the Semantic Web technologies and describe the process of the implementation. © Springer-Verlag Berlin Heidelberg 2005.

关键词： World Wide Web

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Machine learning approach to realtime intrusion detection system

引用

18th Australian Joint Conference on Artificial Intelligence, AI 2005: Advances in Artificial Intelligence

作者： Kim, Byung-Joo Kim, Il Kon Youngsan University Dept. of Network and Information Engineering 150 Junam-ri Yangsan-si Kyoungnam 626-847 Korea Republic of Kyungpook National University Department of Computer Science Korea Republic of

ISBN: (纸本)3540304622

computer security has become a critical issue with the rapid development of business and other transaction systems over the internet. Recently applying artificial intelligence, machine learning and data mining techniques to intrusion detection system are increasing. But most of researches are focused on improving the classification performance of classifier. Selecting important features from input data lead to a simplification of the problem, faster and more accurate detection rates. Thus selecting important features is an important issue in intrusion detection. Another issue in intrusion detection is that most of the intrusion detection systems are performed by off-line and it is not proper method for realtime intrusion detection system. In this paper, we develop the realtime intrusion detection system which combining on-line feature extraction method with Least Squares Support Vector Machine classifier. Applying proposed system to KDD CUP 99 data, experimental results show that it have remarkable feature feature extraction and classification performance compared to existing off-line intrusion detection system. © Springer-Verlag Berlin Heidelberg 2005.

关键词： Learning systems

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Agent-based access control security in grid computing environment

Agent-based access control security in grid computing enviro...

引用

2005 IEEE networking, Sensing and Control, ICNSC2005

作者： Jie, Lin Cong, Wang Yanhui, Guo Research Center of Intelligence Sci. Tech. Engineering Dept. Beijing University of Posts and Telecommunications Beijing 100876 China Network Technology and Information Systems CITSR Beijing University of Posts and Telecommunications

This paper presents a framework of access control security in grid computing environment. Considering the dynamic characteristic and multi-management domains in grid computing, I design a model of combining inner-domain and cross-domain access control mechanism based on the intelligent agent and basic network access control technology. It's a try on setting a unified Grid security strategy. © 2005 IEEE.

关键词： security of data

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Predicting preterm birth using artificial neural networks

Predicting preterm birth using artificial neural networks

引用

18th IEEE Symposium on computer-Based Medical systems

作者： Catley, Christina Frize, Monique Walker, Robin C. Petriu, Dorina C. Dept. Systems and Computer Engineering Carleton University Ottawa Canada School of Information Technology and Eng. University of Ottawa Ottawa Canada Department of Pediatrics University of Ottawa Ottawa Canada

This paper has three contributions: 1) to evaluate how changing the a priori distribution of the training set affects the performance of a back-propagation feed-forward Artificial Neural network (ANN) in predicting PreTerm Birth (PTB) for obstetrical patients, 2) to assess the effectiveness of the weight elimination cost function in improving the ANN's classification of PTB and in identifying a new minimal dataset, and (3) to determine if PTB can be predicted outside of clinical trial situations using data readily available to the physician during obstetrical care. The ANN was trained and tested on cases with 8 input variables describing the patient's obstetrical history;the output variable was PTB before 37 weeks gestation. To observe the impact of training with a higher-than-normal prevalence, an artificial training set with a PTB rate of 23% was created. networks trained on higher-than-normal prevalence achieved higher sensitivity rates and greater C-index values, at the cost of slightly lower specificity and correct classification rates. © 2005 IEEE.

关键词： Neural networks

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HGBS: A Hardware-oriented Grid BLAST System

HGBS: A Hardware-oriented Grid BLAST System

引用

2005 IEEE International Symposium on Cluster Computing and the Grid, CCGrid 2005

作者： Kim, Tae-Kyung Oh, Sang-Keun Lee, Kyung-Hee Roh, Dong-Hyun Cho, Wan-Sup Dept. of Industrial Information Engineering Chungbuk National University Cheong-ju Korea Republic of Hansol Network Consulting Cooperation Cheong-ju Korea Republic of School of Computer Information and Communication Engineering Seowon University Cheong-ju Korea Republic of Div. of Life Sciences Chungbuk National University Cheong-ju Korea Republic of Dept. of Management Information System Chungbuk National University Cheong-ju Korea Republic of

ISBN: (纸本)0780390741

BLAST is one of the most widely used tools in bioinformatics to find biologically similar sequences from the genome databases for a given query sequence. Although elaborate dynamic programming and heuristic search in the BLAST rapidly identify significant similar sequences, performance is still an important issue as the size of genome databases and sequences to be compared increases. We propose HGBS (Hardware-Oriented Grid BLAST System) that significantly improves the BLAST performance by applying the grid computing technique. HGBS utilizes a PC-based grid environment constructed by a specialized hardware chip, not a grid middleware such as the Globus toolkit, to provide enhanced performance, good extensibility, and lower implementation cost. Performance analysis shows that there is a significant performance advantage in HGBS;for huge number of BLAST operations in 89-prokaryote genomes comparison, HGBS connecting 27 PCs needs just a week to complete the comparisons, but a single server system takes about 33 weeks. © 2005 IEEE.

关键词： Distributed computer systems

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NS-2 based IP traceback simulation against reflector based DDoS attack

NS-2 based IP traceback simulation against reflector based D...

引用

13th International Conference on AIS 2004

作者： Lee, Hyung-Woo Kwon, Taekyoung Kim, Hyung-Jong Dept. of Software Hanshin University Osan Gyunggi 447-791 Korea Republic of School of Computer Engineering Sejong University Seoul 143-747 Korea Republic of Korea Information and Security Agency Garak Songpa Seoul 138-803 Korea Republic of

Reflector attack belongs to one of the most serious types of Distributed Denial-of-Service (DDoS) attacks, which can hardly be traced by traceback techniques, since the marked information written by any routers between the attacker and the reflectors will be lost in the replied packets from the reflectors. In response to such attacks, advanced IP traceback technology must be suggested. This study proposed a NS-2 based traceback system for simulating iTrace technique that identifies DDoS traffics with multi-hop iTrace mechanism based on TTL information at reflector for malicious reflector source trace. According to the result of simulation, the proposed technique reduced network load and improved filter/traceback performance on distributed reflector attacks1. © Springer-Verlag Berlin Heidelberg 2005.

关键词： network protocols

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Mobility and routing management for heterogeneous multi-hop wireless networks

Mobility and routing management for heterogeneous multi-hop ...

引用

2nd IEEE International Conference on Mobile Ad-hoc and Sensor systems, MASS 2005

作者： Xie, Bin Kumar, Anup Cavalcanti, Dave Agrawal, Dharma P. Srinivasan, S. Computer Engineering and Computer Science Dept. University of Louisville Louisville KY 40292 United States Computer Information Systems University of Louisville Louisville KY 40292 United States OBR Center for Distributed Mobile Computing Department of ECECS University of Cincinnati Cincinnati OH 45221-0030 United States

ISBN: (纸本)0780394666

This paper proposes a new Heterogeneous Multi-hop Cellular IP (MCIP) network that integrates multi-hop communication with Cellular IP. MCIP increases the coverage of the wireless network and improves the network robustness against adverse propagation phenomena by supporting communication in dead zones and areas with poor radio coverage. MCIP includes three components: location management, connection management and route reconfiguration. Location management is responsible for maintaining the location information for Mobile Stations (MSs) in a local domain. Connection management establishes an initial path for data transmission and a route reconfiguration mechanism is proposed to take advantage of various multi-hop connection alternatives available based on terminal interfaces, network accessibility and topology. Our simulation results show that MCIP performs well in networks of various sizes. © 2005 IEEE.

关键词： Wireless telecommunication systems

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String matching-based universal source codes for source networks with asymptotically zero feedback

String matching-based universal source codes for source netw...

引用

2005 IEEE International Symposium on information Theory, ISIT 05

作者： Yang, En-Hui He, Da-Ke Uyematsu, Tomohiko Yeung, Raymond W. Dept. of Electrical and Computer Engineering University of Waterloo Waterloo Ont. N2L 3G1 Canada IBM T. J. Watson Research Center Yorktown Heights NY 10598 United States Dept. of Communications and Integrated Systems Tokyo Institute of Technology Ookamaya 2-12-1 Meguro-ku Tokyo 152- 8552 Japan Dept. of Information Engineering Chinese University of Hong Kong N.T. Hong Kong

ISBN: (纸本)0780391519

Consider a source network in which a finite alphabet source X = {X i}i=0∞ is to be encoded and transmitted, and another finite alphabet source Y = {Yi}i=0∞ available only to the decoder as the side information correlated with X. Traditionally the channel between the encoder and decoder in the source network is assumed to be one-way. This, together with that the encoder does not have access to Y, necessitates that the encoder knows the achievable rates before encoding. In this paper we consider universal source coding for a feedback source network in which the channel between the encoder and decoder is two-way and asymmetric. Assuming that the encoder and decoder share a random database that is independent of both X and Y, we propose a string matching-based (variable-rate) block coding algorithm with a simple progressive encoder for the feedback source network. This algorithm does not need to know the achievable rates at the beginning of encoding. It is proven that for any (X, Y) in a large class of sources which includes the class of all memoryless sources, the class of all aperiodic Markov sources, and a large class of finite-state sources as special subclasses, the average number of bits per letter transmitted from the encoder to the decoder (compression rate) goes arbitrarily close to the conditional entropy H(X|Y) of X given Y asymptotically, and the average number of bits per letter transmitted from the decoder to the encoder (feedback rate) goes to 0 asymptotically.

关键词： Block codes

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Elementary science classroom learning with wireless response devices - Implementing active and experiential learning

Elementary science classroom learning with wireless response...

引用

IEEE International Workshop on Wireless and Mobile Technologies in Education, WMTE 2005

作者： Chen, Yu-Fen Liu, Chen-Chung Yu, Ming-Hung Chang, Sung-Bin Lu, Yun-Chen Chan, Tak-Wai Dept. of Computer Science Information Engineering National Central University Taiwan Graduate Institute of Network Learning Technology National Central University Taiwan Degree Program of E-Learning College of Science National Chiao Tung University Taiwan Chu-Wei Elementary School Taiwan

ISBN: (纸本)0769523854

Active learning enables learners to actively engage in learning. Learning not only transfers material to students for learning, but also encourages greater mental engagement and more extensive student-student and student-instructor interaction than does a typical lecture class. Peer Instruction (PI) engages students in active learning by achieving continuous instructor-student interaction in a physics lecture. However, the methodologies and the effectiveness of implementing PI for elementary school students have seldom been clarified. This study explores the possibility of adopting PI in an elementary science classroom. The research considerations of the study are as follows: (1) how wireless technology can enhance PI in elementary science classroom;(2) how a teacher can engage students in pre-class reading, and (3) whether elementary school students have sufficient social skills to perform a PI discussion? These questions are examined by observing how the PI pedagogical model worked with a wireless response system in elementary science classroom. Based on the observation, this study also proposes a way of improving the PI learning experience of elementary school students by adding experiments and observations during peer discussion to explain concepts and phenomena in physics. © 2005 IEEE.

关键词： Learning systems

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