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Error Correction on iris biometric template using reed solomon codes

Error Correction on iris biometric template using reed solom...

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Asia Modelling Symposium 2010: 4th International Conference on Mathematical Modelling and computer Simulation, AMS2010

作者： Moi, Sim Hiew Saad, Puteh Rahim, Nazeema Abd Ibrahim, Subariah Department of Software Engineering Faculty of Computer Science and Information System Universiti Teknologi Malaysia Johor Malaysia Department of System and Communication Faculty of Computer Science and Information System Universiti Teknologi Malaysia Johor Malaysia

ISBN: (纸本)9780769540627

Pin number or password that is used for authentication can be easily attacked. This limitation triggered the utilization of biometric for secured transactions. Biometric is unique to each individual and is reliable. Among the types of biometric being used currently, iris is the most accurate and it remains stable throughout a person's life. However the major challenge on iris and other biometric for authentication is the intra user variability in the acquired identifiers. Iris of the same person captured at different time may differ due to the signal noise of the iris camera. Traditional cryptography method is unable to encrypt and store biometric template, then perform the matching directly. Minor changes in the bits of the feature set extracted from the iris may lead to a huge difference in the results of the encrypted feature. In our approach, an iris biometric template is secured using iris biometric and passwords. Error Correction Code, ECC is introduced to reduce the variability and noise of the iris data. Experimental results show that this approach can assure a higher security with a low false rejection or false acceptance rate. The successful iris recognition rate using this approach is up to 97%. © 2010 IEEE.

关键词： Biometrics

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Determining liquid properties by extraordinary acoustic transmission through phononic crystals

Determining liquid properties by extraordinary acoustic tran...

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IEEE SENSORS

作者： R. Lucklum M. Zubtsov M. Ke A. Oseev U. Hempel B. Henning Institute of Micro and Sensor Systems (IMOS) Tto-von-Guericke-University Magdeburg Germany Department of Physics Wuhan University of China Wuhan China Institute of Automation and Communication (ifak) Magdeburg Germany Faculty of Electrical Engineering Computer Science and Mathematics University of Paderborn Paderborn Germany

ISBN: (纸本)9781424492909

This contribution shows how a resonance-induced extraordinary acoustic transmission through a phononic crystal structure can be used as sensor for liquid properties. The phononic crystal consists of a metal plate with a periodic array of holes. Ultrasound propagates in a way that the incidence direction of sound is perpendicular to the plate. A characteristic transmission peak has been found to strongly depend on liquid sound velocity. The respective peak maximum frequency serves as measure for liquid composition. Numerical calculations based on FDTD and FEA reveal more insides to the propagation characteristics, in particular the presence of specific plate modes. Experimental investigations using a laser vibrometer and the Schlieren method support the theoretical findings.

关键词： Acoustics Photonic crystals Frequency measurement Laser beams Crystals Time domain analysis Lattices

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A Prediction of mRNA Polyadenylation Sites in Human Genes

A Prediction of mRNA Polyadenylation Sites in Human Genes

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IEEE Symposium on Bioinformatics and Bioengineering (BIBE)

作者： Jorng-Tzong Horng Li-Ching Wu Shun-Kai Liu Cheng-Wei Chang Tsung-Ming Chao Rong-Hwei Yeh Kuang-Fu Cheng Department of Computer Science and Information Engineering National Central University Taiwan Department of Bioinformatics Asia University Taiwan Graduate Institute of System Biology and Bioinformatics National Central University Taiwan Department of Information Management Hsing Wu College Taiwan Department of International Business Ching Yun University Taiwan Department of Photonics and Communication Engineering Asia University Taiwan Biostatistics Center and Department of Public Health and Graduate Institute of Statistics China Medical University China

mRNA polyadenylation Is an essential mechanism in human genes and is direct linked to the termination of transcription. Alternative polyadenylation changes the length of the mature mRNA's 3'UTR. Since 3'UTRs have been shown to contain regulatory elements that control mRNA functioning, alternative polyadenylation plays an important role in controlling the expression of human genes. Prediction of polyadenylation sites can help with the identification of genes and aid our understanding of the mechanisms of alternative polyadenylation. In this study, we constructed a system for mRNA polyadenylation site prediction in human genes using SVM and based on an analysis of the sequence alignment between pair-end diTags (PET) and genome sequences. The PET sequences were mapped to the reference genome more accurate compared to earlier methods. We also analyzed single-site type and multiple-site type sequences PET sequence datasets and found that the frequencies of each nucleotide were different when the single-site type and multiple-site type PET sequences were compared.

关键词： Humans Positron emission tomography Bioinformatics Genomics Support vector machines Training Feature extraction

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Classification models based-on incremental learning algorithm and feature selection on gene expression data

Classification models based-on incremental learning algorith...

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International Conference on Electrical engineering/Electronics, computer, Telecommunications and Information Technology, ECTI-CON

作者： Patharawut Saengsiri Phayung Meesad Sageemas Na Wichian Unger Herwig Department of Information Technology Faculty of Information Technology King Mongkut''s University of Technology North Bangkok Bangkok Thailand Department of Applied Science and Social College of Industrial Technology King Mongkut''s University of Technology North Bangkok Bangkok Thailand Department of Teacher Training in Electrical Engineering Faculty of Technical Education King Mongkut''s University of Technology North Bangkok Bangkok Thailand Department of Communication Network Faculty of Mathematics and Computer Science Fern University of Hagen Germany

Gene expression data is illustration levels of genes that DNA encode into the protein such as muscle or brain cells. However, some abnormal cells may evolve from unnatural expression levels. So, finding a subset of informative gene would be beneficial to biologists because it can help to identify discriminate genes. Unfortunately, genes grow rapidly up into the tens of thousands gene which make it difficult for classifying processes such as curse of dimensionality and misclassification problems. This paper proposes classification models based-on incremental learning algorithm and feature selection on gene expression data. Three feature selection methods: Correlation based Feature Selection (Cfs), Gain Ratio (GR), and Information Gain (Info) combined with Incremental Learning Algorithm based-on Mahalanobis Distance (ILM). Result of the experiment represented proposes models CfsILM, GRILM and InfoILM not only reduce many dimensions, save time-resource but also improve accuracy rate. Particularly, CfsILM was outstanding than other models on three public gene expression datasets.

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An application of fractional intelligent robust controller for electromechanical valve

An application of fractional intelligent robust controller f...

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World Congress on Information and communication Technologies (WICT)

作者： Tribeni Prasad Banerjee Suman Saha Swagatam Das Ajith Abraham Department of Electronics and Telecommunication Engineering Jadavpur University Kolkata India Drives and Control System Laboratory CSIR-Central Mechanical Engineering Research Institute Durgapur West Bengal India IT For Innovations EU Center of excellence Faculty of Electrical Engineering and Computer Science VSB-Technical University of Ostrava Czech Republic Scientific Network for Innovation and Research Excellence Machine Intelligence Research Laboratories-MIR Laboratories WA USA

The paper analyzed and model of a fault tolerant electromechanical controlled worm gear driven fuel shut off valve for aerospace application. The analysis is mainly on design a reduced order fractional controller. This is for controlling the velocity of worm gear so that the friction torque due to uneven rotational speed can be avoided. Because with the friction and stiction and backlash the valve system performance is reduced and more and more unstable this leads the system to failure. The proposed controller can provide robustness against the uncertain loading torque and system parameter.

关键词： Valves Gears Equations Control systems Robustness Mathematical model Torque

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Optimization of mechanical input power to synchronous generator based on Transient Stability Center-of-Inertia: COI angle and COI Speed

Optimization of mechanical input power to synchronous genera...

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International Power engineering and Optimization Conference (PEOCO)

作者： H. Hashim I. Z. Abidin Keem Siah Yap Ismail Musirin M. R. Zulkepali Universiti Tenaga Malaysia (UNITEN) Malaysia Department of Electrical Power Engineering College of Graduate Studies Universiti Tenaga Malaysia (UNITEN) Malaysia Department of Electronics and Communication Engineering College of Graduate Studies Universiti Tenaga Malaysia (UNITEN) Malaysia Universiti Teknologi Mara Malaysia International Association of Engineers (IAENG) and International Association of Computer Science and Information Technology (IACSIT) IEEE Power Engineering Society and Artificial Immune System Society (ARTIST) USA Denso (M) Sdn. Bhd. Malaysia

Rotor angle of the machine may accelerate or decelerate due to transient instability depending on the mechanical power or the turbine power, P m and electrical power, P e . As such, injecting an appropriate mechanical input power in accordance to the electrical power demand and losses at a critical time and condition will avoid major supply interruption due to unnecessary tripping of circuit breaker during transient instability. This paper presents Evolutionary Programming (EP) approach to optimize the mechanical input power in order to prevent transient instability in the system. The optimization is based on Area-based COI-referred Transient Stability Indexes: COI Angle and COI Speed, for a three area system with six generators. Results obtained from the experiment revealed that the EP approach is able to give an optimal solution.

关键词： Power system stability Generators Transient analysis Rotors Stability criteria

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Computed tomography soft tissue restoration using wiener filter

Computed tomography soft tissue restoration using wiener fil...

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2010 8th IEEE Student Conference on Research and Development - engineering: Innovation and Beyond, SCOReD 2010

作者： Naeem Hussien, M. Iqbal Saripan, M. Department of Computer and Communication System Engineering Faculty of Engineering Universiti Putra Malaysia 43400 UPM Serdang Selangor Malaysia

ISBN: (纸本)9781424486489

This paper presents image restoration for Computed Tomography (CT) scan image particularly soft tissue area using image restoration technique. The approach of these technique are using inverse filtering which specifically involving Wiener filter to remove the noise and blur simultaneously in the CT image further restore the degraded CT image. CT scan image usually showing less detail visualization of soft tissue compare to Magnetic Resonance Imaging (MRI) scan image. The new CT image after restoration technique showed significantly high contrast compared to the original CT image produced by the CT scan machine. This procedure also shows comparison of different values use for noise to signal ratio (NSR) in Wiener filter equation to generate the estimate output of CT image. In this procedure values of NSR are treat as constant. ©2010 IEEE.

关键词： Magnetic resonance imaging

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Self-localization of swarm robots based on voice signal acquisition

Self-localization of swarm robots based on voice signal acqu...

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International Conference on computer and communication engineering, ICCCE'10

作者： Arvin, Farshad Doraisamy, Shyamala Samsudin, Khairulmizam Ramli, Abdul Rahman Department of Computer System Engineering Faculty of Engineering Malaysia Department of Multimedia Faculty of Computer Science and Information Technology 43400 UPM Serdang Malaysia

ISBN: (纸本)9781424462346

This paper presents an acoustical signal tracking experiment by swarm mobile robots. Biological swarm is a fascinating behavior of nature which was inspired from social insects' behavior. A mobile robot that is designed as a swarm robotic platform was employed for implementing voice exploration behavior. An additional module was developed to connect to robots for processing given voice signals using the proportional signal strength approach that estimates orientation of sound source using fuzzy logic approach. The voice processor module utilizes four condenser microphones with around -47db sensitivity which are placed in different directions of the circuit board for capturing surrounding sound signals. Captured samples by microphones are processed to estimate the relative positions of the sound source in the robotic environment. After estimating the position of the signal's source, all participants move towards similar to the insects' colony. The participant robots have an individual task for the estimation of source location from captured samples. Moreover, according to the swarm definition, an additional cooperation between swarm participants is required to achieve a correct colony of robots. Obtained results illustrate the feasibility of the proposed technique and hardware interface for sound signals acquisition with swarm robots. © 2010 IEEE.

关键词： Fuzzy logic

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A Nearest Transmitter Classification Method for VLC Based Positioning system

A Nearest Transmitter Classification Method for VLC Based Po...

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IEEE International Symposium on Personal, Indoor and Mobile Radio communications

作者： Chinnapat Sertthin Tomoaki Ohtsuki Osamu Takyu Takeo Fujii Yohtaro Umeda Department of Information and Computer Science Faculty of Science and Technology Keio University Departments of Electrical and Electronic Engineering Division of Science and Technology. Shinshu University Advance Wireless Communication Research Center (AWCC) University of Electro-Communications Department of Electrical Engineering Faculty of Science and Technology Tokyo University of Science

ISBN: (纸本)9781457713460

Nearest transmitter information is a mandatory requirement for utilizing Switching Estimated Receiver Position (SwERP) scheme, of which was proposed to enhance accuracy of Visible Light ID (VLID) positioning system. The conventional approach is achieved by controlling Sensitivity (R_xS) limit. Conversely, general distance estimation by optical received power can also be used. Both of the mentioned methods have disadvantage on implementation complexity and inaccuracy due to noise fluctuation, respectively. In this paper, we propose a nearest transmitter classification (NTC) method by utilizing Optical Orthogonal Code (OOC) with On-Off Keying (OOK) modulation at transmitters (T_xs), and perform oversampling at a receiver (R_x) to overcome the limitation of bandwidth resolution (B). The results confirm that the proposed method can classify the nearest T_x accurately, with some tradeoff with computation complexity from the increment of oversampling factor (O_c).

关键词： variable length codes Transmitters Nearest Oversampling Positioning systems received power Transmitter on-off keying tradeoffs Classification Methods

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Using CAPTCHAs to mitigate the VoIP spam problem

Using CAPTCHAs to mitigate the VoIP spam problem

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2nd International Conference on computer Research and Development, ICCRD 2010

作者： Ahmedy, Ismail Portmann, Marius Department of Computer System and Communication Faculty of Computer Science and Information System Universiti Teknologi Malaysia Johor Malaysia School of Information Technology and Electrical Engineering University of Queensland Queensland Australia

ISBN: (纸本)9780769540436

Voice over Internet Protocol (VoIP) is one of the emerging technologies today. This application offers the user a service by which one can call another person at a low cost as compare with traditional phone services. One drawback to the Internet is spam, which are unsolicited or unwanted objects which often appear as unwanted messages in various email applications. For VoIP, spam refers to unsolicited and unwanted calls by the VoIP user. In this paper, we have purposed a solution to prevent the spam in VoIP. The CAPTCHA (Completely Automated Public Turing Test to Tell computers and Human Apart) method aims to determine whether the call is coming from a human or a machine. The key contribution of this paper is a proof-of-concept implementation of a CAPTCHA mechanism to prevent VoIP Spam. © 2010 IEEE.

关键词： Electronic mail filters

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