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Joint Conferences on Pervasive Computing (JCPC)

作者： Yung-Hui Chen Lawrence Y. Deng Chun-Hong Huang Neil Y. Yen Department of Computer Information and Network Engineering Lunghwa University of Science and Technology Taiwan Department Computer Science and Information Engineering Saint John''s University Taiwan Department of Computer Science and Information Engineering Tamkang University Taiwan

ISBN: (纸本)9781424452279;9781424452286

The more professional licenses, the more jobs for student can easily get in Taiwan. It is very important to promote some professional certification for students in vocational education. In this paper, we used the rule-space model to diagnose the cognitive skills for assessment evaluation and also considered the user's relevance feedback to improve the learner's learning achievement in ITE (Information Technology Expert) course. The rule-space model approach supports cognitive analysis of student's network technologies skill. And then to comprehensive what learning tops are weaknesses or strengths by individuals. The learner's relevance feedback provided user's evaluation that contained the item difficulty. We implemented a Web testing application for ITE testing simulation. In our experiences, this approach can provide to understand the learning characteristic for e-learning achievement and to explore better educational application. The learner can fit Self-Regulation processing of the Scaffolding Theory and achieving social learning effectiveness, simultaneously.

关键词： Certification Feedback

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MRPC: A Multi-Rate Supported Power Control MAC Protocol for Wireless Ad Hoc networks

MRPC: A Multi-Rate Supported Power Control MAC Protocol for ...

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IEEE Conference on Wireless Communications and networking

作者： Kuei-Ping Shih Chau-Chieh Chang Yen-Da Chen Department of Computer Science and Information Engineering Tamkang University Taipei Taiwan Department of Computer Information and Network Engineering Lunghwa University of Science and Technology Taoyuan Taiwan

The paper proposes a multi-rate supported power control, named MRPC, MAC protocol to avoid the LIRC (Large Interference Range Collision) problem for wireless ad hoc networks. The main concept of the MRPC protocol is to protect the current reception by means of the carrier-sensing range of the previous transmission to cover the induced interference range of the current reception. Based on the concept, MRPC formulates the requirements of a successful transmission and figures out the appropriate power strength for transmissions. Furthermore, since the threshold values of SNR and receiver sensitivity values are changed with the data transfer rates, MRPC also takes the different threshold values in multi-rate environments into consideration in formulating these requirements. MRPC can reduce the energy consumption and increase the spatial reuse due to the controlled transmission power. It is further shown that MRPC can also work correctly in multi-rate environments. Simulation results show that MRPC performs much better than the related work in terms of network throughput as well as the energy efficiency.

关键词： Power control Media Access Protocol Wireless application protocol Mobile ad hoc networks Interference Energy consumption Throughput Power engineering and energy Transmitters Protection

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AFMAP: Anonymous Forward-Secure Mutual Authentication Protocols for RFID Systems

AFMAP: Anonymous Forward-Secure Mutual Authentication Protoc...

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International Conference on Emerging Security Information, Systems, and Technologies (SecureWare)

作者： Alireza Sadighian Rasool Jalili Network Security Center (NSC) Department of Computer Engineering Sharif University of Technology Tehran Iran Department of Computer Engineering Sharif University of Technology Tehran Iran

In this paper we propose two mutual authentication protocols for RFID systems. Generally, in RFID systems, a reader can authenticate tags in the real-time and batch modes. This paper proposes the first authentication protocol for the real-time mode. It also proposes an efficient robust mutual authentication protocol for the batch mode. Some significant characteristics of the protocols are forward security, tag anonymity, location privacy, low complexity on the back-end server, and scalability. To the best of our knowledge, our protocols offer the most enhanced security features in RFID mutual authentication protocols with respect to user privacy. In analyzing the protocols, we show how remarkable properties such as forward security and tag anonymity are guaranteed. It is also illustrated that our protocol is secure against several common attacks that RFID systems confront with.

关键词： Authentication Protocols Radiofrequency identification Information security Privacy RFID tags Scalability computer security computer networks Real time systems

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Thermal noise effect on receiver sensitivity in FTTH customer access network - Simulation approach

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Journal of Optical Communications 2009年第2期30卷 95-98页

作者： Ab-Rahman, Mohammad Syuhaimi Ng, Boonchuan Safnal, Mohd. Hadi Guna Computer and Network Security Research Group Department of Electrical Electronics and Systems Engineering Faculty of Engineering and Built Environment 43600 UKM Bangi Selangor Malaysia

Thermal noise is generated naturally by thermal agitation of electron in a conductor commonly found in optoelectronic (O/E) device. In spite of the optical medium is totally immune to noises but it is not exception to occur in receiver parts. In communication, thermal noises have major influenced to the quality of receiver. It is directly proportional to the resistance and temperature. The lower the thermal noise the higher and expensive is this receiver sensitivity. The paper starts comprehensive study on thermal noise effect to the network performance in terms of bit-error rate (BER), maximum Q-factor, eye height, and maximum distance. Fiber-to-the-home (FTTH) network is used as a test field to study the impact of two different values of thermal noise to the network parameters. We use the receiver sensitivity fixed at -22 dBm to study and analyze the parameters. The Opti-System simulation is used to obtain the desired research objective.

关键词： Q factor measurement

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Matlab-based system for centralized monitoring and self restoration against fiber fault in FTTH

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World Academy of Science, engineering and Technology 2009年 38卷 873-877页

作者： Ab-Rahman, Mohammad Syuhaimi Ng, Boonchuan Jumari, Kasmiran Computer and Network Security Research Group Department of Electrical Electronics and Systems Engineering Faculty of Engineering and Built Environment 43600 UKM Bangi Selangor Malaysia

This paper presented a MATLAB-based system named Smart Access network Testing, Analyzing and Database (SANTAD), purposely for in-service transmission surveillance and self restoration against fiber fault in fiber-to-the-home (FTTH) access network. The developed program will be installed with optical line terminal (OLT) at central office (CO) to monitor the status and detect any fiber fault that occurs in FTTH downwardly from CO towards residential customer locations. SANTAD is interfaced with optical time domain reflectometer (OTDR) to accumulate every network testing result to be displayed on a single computer screen for further analysis. This program will identify and present the parameters of each optical fiber line such as the line's status either in working or nonworking condition, magnitude of decreasing at each point, failure location, and other details as shown in the OTDR's screen. The failure status will be delivered to field engineers for promptly actions, meanwhile the failure line will be diverted to protection line to ensure the traffic flow continuously. This approach has a bright prospect to improve the survivability and reliability as well as increase the efficiency and monitoring capabilities in FTTH. © 2009 ***.

关键词： Fiber to the x

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Analysis of Line Monitoring Device network using centralized failure troubleshooting system

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Journal of Optical Communications 2009年第2期30卷 86-90页

作者： Ab-Rahman, Mohammad Syuhaimi Ng, Boonchuan Jumari, Kasmiran Computer and Network Security Research Group Department of Electrical Electronic and System Engineering Faculty of Engineering and Built Environment 43600 UKM Bangi Selangor Malaysia

An optical time domain reflectometer (OTDR) is an instrument that used to measure parameters such as attenuation, length, connectors and splice losses, reflectance level and locating faults in an optical link. The measurement results are saved in OTDR and then transfer into computer for further analysis by using computerbased emulation software for performing more OTDR trace processing. In this paper, we proposed and demonstrated a new in-line monitoring and testing system based on Line Monitoring Device (LMD) and Centralized Failure Detection System (CFDS) for transmission surveillance and failure detection without affecting the transmission in an optical access network. LMD is passive device for optical signals tapping purpose;meanwhile CFDS is a centralized monitoring and troubleshooting solution with the GUI processing in MATLAB software. The LMD network will be analysis through both programs by means of OTDR installed software and our CFDS. The results are eventually compared and show both are reliable with the second is able to be extended for further analysis. Any fiber failure or breakdown occurs in the network will be determined by CFDS while the LMD is used to determine sharply the point of failure before it is been repaired. The proposed systems are able to improve the service reliability and reduce the repairing cost and time.

关键词： Time domain analysis

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Newborn screening system based on adaptive feature selection and support vector machines

Newborn screening system based on adaptive feature selection...

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2009 9th IEEE International Conference on Bioinformatics and Bioengineering, BIBE 2009

作者： Hsieh, Sung-Huai Chien, Yin-Hsiu Shen, Chia-Ping Chen, Wei-Hsin Chen, Po-Hao Hsieh, Sheau-Ling Cheng, Po-Hsun Lai, Feipei Information Systems Office National Taiwan University Hospital Taipei Taiwan Department of Computer Science and Information Engineering National Taiwan University Taiwan Department of Electrical Engineering National Taiwan University Taipei Taiwan Network and Computer Centre National Chiao Tung University Hsin Chu Taiwan Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taiwan Department of Software Engineering National Kaohsiung Normal University Taiwan Department of Medical Genetics National Taiwan University Hospital Taiwan

ISBN: (纸本)9780769536569

The clinical symptoms of metabolic disorders during neonatal period are often not apparent, if not treated early irreversible damages such as mental retardation may occur, even death. Therefore, practicing newborn screening is very important to prevent neonatal from these damages. In this paper, the newborn screening system used support vector machines (SVM) classification technique is proposed in place of cut-off value decision to evaluate the metabolic substances concentration raw data obtained from tandem mass spectrometry (MS/MS) and determine whether the newborn has some kinds of metabolic disorder diseases. On the basis of the proposed features, new analytic combinations are identified with superior discriminatory performance compared with the best published combinations. Classifiers built with the feature selection to find C3/C2, C3 and C16 of three key point features achieved diagnostic sensitivities, specificities and accuracy approaching 100%. © 2009 IEEE.

关键词： Support vector machines

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Using a neural network to make operational forecasts of ionospheric variations and storms at Kokubunji, Japan

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Journal of the National Institute of Information and Communications Technology 2009年第1-4期56卷 391-406页

作者： Nakamura, Maho Maruyama, Takashi Shidama, Yasunari Space-Time Standards Group New Generation Network Research Center Japan Faculty of Engineering Department of Computer Science and Engineering Shinshu University Japan

An operational model was developed for forecasting ionospheric variations and storms at Kokubunji (35° N, 139° E), 24 hours in advance, by using a neural network. The ionospheric critical frequency (foF2) shows periodic variabilities from days to the solar cycle length and also shows sporadic changes known as ionospheric storms caused by geomagnetic storms (of solar disturbance origin). The neural network was trained for the target parameter of foF2 at each local time and input parameters of solar flux, sunspot number, day of the year, K-index at Kakio-ka. The training was conducted using the data obtained for the period from 1960 to 1984. The method was validated for the period from 1985 to 2003. The trained network can be used for daily forecasting ionospheric variations including storms using prompt daily reports of K-index, sunspot number, and solar flux values available on-line.

关键词： Storms

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Fault-Tolerant Bit-Parallel Multiplier for Polynomial Basis of GF（2^m）

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Journal of Electronic Science and Technology of China 2009年第4期7卷 343-347页

作者： Chiou-Yng Lee Pramod Kumar Meher Chia-Chen Fan Computer Information and Network Engineering Lunghwa University of Science and Technology Department of Communication Systems Institute for Infocomm Research

Novel fault-tolerant architectures for bit-parallel polynomial basis multiplier over GF（2^m）, which can correct the erroneous outputs using linear code, are presented. A parity prediction circuit based on the code generator polynomial that leads lower space overhead has been designed. For bit-parallel architectures, the Moreover, there is incorporation of space overhead only marginal time error-correction is about 11%. overhead due to capability that amounts to 3.5% in case of the bit-parallel multiplier. Unlike the existing concurrent error correction （CEC） multipliers or triple modular redundancy （TMR） techniques for single error correction, the proposed architectures have multiple error-correcting capabilities.

关键词： Fault tolerant system finite field parity prediction.

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ECO: Enhanced Reader Collision Avoidance MAC for Reader-Sensor networks

ECO: Enhanced Reader Collision Avoidance MAC for Reader-Sens...

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International Conference on Intelligent networking and Collaborative Systems (INCOS)

作者： Doohyun Ko Hyeong-Jong Ju Sangbin Lee Sungjun Kim Sunshin An Department of Electronics Engineering Computer Network Laboratory Korea University Seoul South Korea

In recent years, one of alternatives for constructing RFID networks that provide mobile services is using wireless sensor networks (WSN) to enhance network capacity,utility and scalability. Due to absence of compatible reader anti-collision control and channel capture phenomenon, the medium access control protocols as used in the RFID networks lead to reader collision and starvation problem. In this paper, we develop a MAC protocol which is called enhanced collision avoidance MAC (ECO) to avoid reader to reader collisions in an integrated RFID network. ECO is a CSMA-based MAC protocol, and operates on integrated nodes which consist of a RFID reader and a mote. Performance evaluation shows superior results to pure-CSMA protocols under dense deployment environments, both in number of failures and in throughput.

关键词： Collision avoidance Radiofrequency identification Wireless sensor networks Media Access Protocol Temperature sensors Access protocols Environmental management network servers Land mobile radio cellular systems Intelligent networks

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