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2009 22nd International Vacuum Nanoelectronics Conference, IVNC 2009

作者： Kikuchi, M. Gamo, H. Nakagawa, K. Ando, T. Tomokage, H. Nishitani-Gamo, M. Dept. of Applied Chemistry Sensor Photonics Res. Center Toyo Univ. Saitama 350-8585 Japan Technical Research Institute Toppan Printing Co. Ltd. Sugito Saitama 345-8508 Japan Department of Chemical Engineering Kansai University Suita Osaka 564-8680 Japan Tsukuba Ibaraki 305-0044 Japan Dept. of Electronics Engineering and Computer Science Fukuoka Univ. Fukuoka 814-0180 Japan

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Real‐Time Parameter Estimation Method Applied to a MIMO Process and its Comparison with an Offline Identification Method

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AIP Conference Proceedings 2009年第1期1089卷 35-45页

作者： Erkan Kaplanoğlu Koray K. Şafak H. Selçuk Varol aMarmara University Technical Education Faculty Dept. of Mechatronics Kadikoy 34722 Istanbul Turkey bYeditepe University Dept. of Mechanical Engineering Kayisdagi 34755 Istanbul Turkey cMarmara University Technical Education Faculty Dept. of Electronics and Computer Kadikoy 34722 Istanbul Turkey

An experiment based method is proposed for parameter estimation of a class of linear multivariable systems. The method was applied to a pressure‐level control process. Experimental time domain input/output data was utilized in a gray‐box modeling approach. Prior knowledge of the form of the system transfer function matrix elements is assumed to be known. Continuous‐time system transfer function matrix parameters were estimated in real‐time by the least‐squares method. Simulation results of experimentally determined system transfer function matrix compare very well with the experimental results. For comparison and as an alternative to the proposed real‐time estimation method, we also implemented an offline identification method using artificial neural networks and obtained fairly good results. The proposed methods can be implemented conveniently on a desktop PC equipped with a data acquisition board for parameter estimation of moderately complex linear multivariable systems.

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A New Blind SLM Scheme with Low Complexity of OFDM Signals

A New Blind SLM Scheme with Low Complexity of OFDM Signals

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IEEE Conference on Vehicular Technology (VTC)

作者： Hyun-Seung Joo Seok-Joong Heo Hyun-Bae Jeon Jong-Seon No Dong-Joon Shin Dept. of Electrical Eng. and Computer Science Seoul National University Seoul Korea Department of Electronics and Computer Engineering Hanyang University Seoul South Korea

ISBN: (纸本)9781424425143

In this paper, we propose a new blind SLM scheme with low complexity using m-sequence as a phase sequence in OFDM. The proposed scheme significantly reduces the computational complexity for searching the side information of the phase sequence and decoding the alternative symbol sequence at the receiver. After generating alternative symbol sequences using a set of phase sequences, the side information for each alternative symbol sequence is embedded in it through block partitioning and phase rotation. The proposed method does not need additional inverse fast Fourier transform (IFFT) and has the same PAPR reduction performance compared to the conventional SLM scheme. In order to find the side information, a maximum likelihood (ML) decoder with lower complexity is derived, which guarantees lower detection failure probability of side information compared to the conventional blind SLM scheme.

关键词： OFDM Peak to average power ratio Maximum likelihood decoding Maximum likelihood detection Bit error rate Computational complexity Fast Fourier transforms Partial transmit sequences Degradation computer science

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Wavelet usage for feature extraction for crack localization

Wavelet usage for feature extraction for crack localization

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Mediterranean Conference on Control and Automation (MED)

作者： George Georgoulas Chrysostomos Stylios Vassilios Kappatos Evangelos Dermatas Dept. of Computer Applications in Finance and Management TEI of Ionian Islands Lefkas Greece Electrical Engineering Department University of Patras Patras Hellas Dept. of Informatics & Communications Technology TEI of Epirus Arta Greece

In this research work we investigate the analysis of Acoustic Emission (AE) signals using wavelet decomposition to locate a single event (crack), which usually takes place in three typical areas in a ship hull. The problem is a typical classification problem relying on the use of novel features extracted from the AE time series. As in most classification problems the extraction and selection of the most appropriate set of features plays a major role in the overall performance of the method and it is by no means a trivial task. Once a suitable set of features is extracted even ldquosimplerdquo classification models can perform adequately whereas a non-informative set of features even combined with sophisticated classifiers can lead to disappointing results. Here, we exploit the multi-resolution capabilities of wavelet decomposition, so that a set of features is extracted which it is then combined with a simple classifier. The proposed method gives superior classification rates for noisy environments compared to our previous work where conventional methods for feature extraction were deployed.

关键词： Feature extraction Marine vehicles Fatigue Welding Signal processing Inspection Surface cracks Neural networks Wavelet analysis Acoustic emission

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Integrated telehome care with community-based health information system

Integrated telehome care with community-based health informa...

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2009 1st International Conference on Wireless Communication, Vehicular Technology, Information Theory and Aerospace and Electronic Systems Technology, Wireless VITAE 2009

作者： Chen, Heng-Shuen Su, Mei-Ju Zhang, Han-Wei Chen, Robert Guo, Fei-Ran Teng, Shih-Shung Dept. of Medical Informatics College of Medicine National Taiwan University Taiwan Graduate Institute of Electronics Engineering College of EE and CS National Taiwan University Taiwan Graduate Institute of Electrical Engineering College of EE and CS National Taiwan University Taiwan Department of Physiology University of Toronto Canada Department of Family Medicine National Taiwan University Hospital Taiwan Young-Ho Branch Caridinal Tien Hospital Taiwan

ISBN: (纸本)9781424440672

Even as the 21st Century dawns, Taiwan has already become an aging society. As of 2007, more than 10% of the population is composed of elderly people over 65 years of age. Due to a decrease in total fertility rate to 1.1 in 2008, the proportion of elderly people in the general population will increase more rapidly in the next two decades. The increasingly elderly population, coupled with a corresponding shortage of productive manpower, means that many elderly people are living alone or without a designated caregiver during the day. In this study, a health management center with a community-based health information system platform was integrated with a community hospital and primary care family doctors to provide telehome care for elderly people with chronic diseases or disabilities. © 2009 IEEE.

关键词： Information management

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A study on the galvanic reaction between cu and mo as well as mow for tft-lcds by using a zero-resistance ammeter

A study on the galvanic reaction between cu and mo as well a...

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2009 Vehicles and Photons Symposium

作者： Seo, Bo-Hyun Lee, Sang-Hyuk Lee, In-Kyu Seo, Jong Hyun Jeon, Jae-Hong Choe, Heehwan Lee, Kang-Woong Winkler, Jörg Reinfried, Nikolaus Knabl, Wolfram Dept. of Materials Engineering Korea Aerospace University 200-1 Hwajeon-dong Deogyang-guGoyang412-791 Korea Republic of School of Electronics Telecommunications and Computer Engineering Korea Aerospace University 200-1 Hwajeon-dong Deogyang-guGoyang412-791 Korea Republic of PLANSEE Metal GmbH Metallwerk-Plansee-Str Reutte71A-6600 Austria

Recently, copper metallization has been widely developed in TFT-e of its lowest electrical resistivity compared LCD industry, because to aluminum and its alloys. In addition, the copper metallization becomes a more significant issue in a high frequency driving technology for large sized TFT-LCD panel.. Since copper has a low adhesion force against the glass substrate, copper is inevitably used with an aid of an adhesive metal layer such as Ti, Ta and Mo. When dissimilar metals like copper and molybdenum are exposed together in a wet etchant,, a typical galvanic reaction occurs and this results in an undercutting of copper line or partial stains on the metal surface after drying. The suitable taper angle of Cu line is difficult to obtain especially coupled with pure molybdenum.. Such failures often lead to a bad performance of thin film transistor and the display quality. There are many literatures related to the copper metallization for TFT. However, a systematic approach on the galvanic reaction occurred in copper multilayered system has not been made. In this work, we investigated a feasibility of molybdenum alloy film (MoW) for copper metallization on the basis of the thin film analysis and the advanced electrochemical techniques such as Zero Resistance Ammeter (ZRA) method. � 2009 SID.

关键词： Copper

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A service platform design for affective lighting system based on user emotions

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WSEAS Transactions on Information Science and Applications 2009年第7期6卷 1176-1185页

作者： Son, Byounghee Park, Youngchoong Yang, Hyo-Sik Kim, Hagbae Dept. of Electrical and Electronics Engineering Yonsei University 134 Shinchon-dong Seodaemun-gu Seoul Korea Republic of Ubiquitous Technology Research Center Korea Electronics Technology Institute 1599 Sangam-dong Mapo-gu Seoul Korea Republic of Dept. of Computer Engineering Sejong University 98 Gunja-dong Gwangjin-gu Seoul Korea Republic of

The development of IT has changed not only computer techniques, but also human life and the environment. It provides us with more and more chances to interact with computers. While we feel much unease while communicating with computers, from device-centered automatic solutions, human emotion are considered as an intelligent solution has been investigated continuously. Skillfully dealing with emotions is important in realizing more natural communication between computers and human being. According to this idea, the importance of emotional technology has been raised. For investigating human emotion accurately, however a technique that is able to recognize data comprehensively, including various and complex user context data, the condition of the user space, and changes to this space, are in demand. Additionally, research on sensors which recognize various environments and studies of reasoning algorithms are necessary. In particular, research related to standard platforms and storage techniques for the recognition, reasoning, expression, and similar areas are necessary for extracting different personal attributes of variables such as gender, age, birth area, and race. This paper outlines the service platform design for affective lighting system that can determine the emotional condition of a user and supply light adequate to it after adaptively recognizing a user's physiological response as well as the space in which a user is active.

关键词： Light emitting diodes

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A novel load variation compensation algorithm in a sensor-less brushless DC motor drive for a reciprocating compressor

A novel load variation compensation algorithm in a sensor-le...

引用

International Conference on Telecommunications Energy (INTELEC)

作者： Sang-Taek Lee Hee-Jun Kim Dae-Kyong Kim Kwang-Woon Lee Dept. of Electronics Electrical Control and Instrumentation Engineering Hanyang Univ. Korea Digital Convergence Center Korea Electronics Technology Institute Korea School of Electrical Engineering and Computer Science Hanyang Univ. Korea Division of Maritime Electronics and Communication Engineering Mokpo National Maritime Univ. Korea

ISBN: (纸本)9781424424900

This paper presents a novel load variation compensation algorithm in a sensor-less BLDC motor drive for a reciprocating compressor. Periodic load variation of a reciprocating compressor leads to commutation position error and instantaneous speed variation and causes large peak currents. The major concept of this study includes tracking the pattern of load torque and controlling the motor input voltage by the commutation point and PWM depending on the tracked load torque. The suggested method can reduce the cost because this method does not require additional current sensing or voltage comparison circuit. The utility of the suggested algorithm was confirmed by simulation and experimental results of a sensor-less BLDC motor drive.

关键词： Load management Brushless DC motors Torque Commutation Pistons Voltage control Refrigeration Rotors Home appliances Force control

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Variable Latency Rounding for Golschmidt Algorithm with Parallel Remainder Estimation

Variable Latency Rounding for Golschmidt Algorithm with Para...

引用

Euromicro Symposium on Digital System Design

作者： Daniel Piso Fernandez Javier Diaz Bruguera Universidade de Santiago de Compostela Santiago de Compostela Galicia ES Dept. of Electronics and Computer Engineering University of Santiago de Compostela Spain

This paper presents a rounding method for functional iteration algorithms. The new method is made up of a new rounding algorithm and the calculation of a remainder estimation. The rounding method uses the result directly obtained from the algorithm without any transformation. The remainder estimation is calculated in parallel with the algorithm execution. This allow us to avoid the conventional remainder calculation after obtaining result, most of the times. In this way, the final implementation has a variable latency. By using adequate configurations the remainder calculation is only necessary in 9% of the total cases.

关键词： Delay Hardware Algorithm design and analysis Approximation algorithms Digital systems Design methodology computer architecture Convergence Costs Contracts

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Image retrieval using local texture descriptor for CE applications

Image retrieval using local texture descriptor for CE applic...

引用

2009 International Conference on Consumer electronics, ICCE 2009

作者： Ki, Tae Park Jeong, Ho Lee Young, Shik Moon Samsung Electronics Co. Ltd. Suwon Korea Republic of Dept. of Computer Science and Engineering Hanyang Univ. Ansan Korea Republic of

ISBN: (纸本)9781424425594

This paper proposes an image retrieval technique using local texture features based on Fourier transform. The proposed texture features represent the spatial correlation of texture patterns more effectively with less size of the feature vector, compared to the existing ones. By experimental results, it has been shown that the proposed method achieves improvedretrieval results over the existing methods. ©2009 IEEE.

关键词： Image retrieval

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