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Voltammetric Responses of On-Chip Glucose Oxidase Immobilized Diamond-Like Carbon Electrodes

Procedia engineering 2012年 47卷 374-377页

作者： R. Saensak N. Faibut S. Porntheeraphat B. Paosawatyanyong V. Amornkitbamrung N. Triroj Department of Electrical Engineering Faculty of Engineering Khon Kaen University Khon Kaen 40002 Thailand Department of Physics Faculty of Science Khon Kaen University Khon Kaen 40002 Thailand Thai Microelectronic Center (TMEC) National Electronics and Computer Technology Center (NECTEC) Chachoengsao 24000 Thailand Department of Physics Faculty of Science Chulalongkorn University Bangkok 10330 Thailand

This work reports the fabrication and electrochemical characterization of the polydimethylsiloxane (PDMS) microfluidic three-electrode cell chip utilizing diamond-like carbon (DLC) films as a working electrode for amperometric biosensing applications. The DLC films are prepared by a radio-frequency plasma enhanced chemical vapor deposition (RF-PECVD) technique with CH4 as a carbon precursor gas. Raman spectroscopy is employed to characterize the film structures. Cyclic voltammetry is used to investigate the responses of a standard redox species (K3Fe(CN)6 in KNO3) at the three-electrode system. Immobilization of glucose oxidase at the DLC surfaces is attempt through a covalent linkage. Preliminary results indicate that a mediator-free amperometric detection of glucose can be achieved with this device.

关键词： Diamond-like carbon microfluidic chip cyclic voltammetry glucose oxidase electrodes mediator-free glucose detection

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Experimental verification of constrained iterative learning control using successive projection

Experimental verification of constrained iterative learning ...

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UKACC International Conference on Control (CONTROL)

作者： Bing Chu Zhonglun Cai David H Owens Eric Rogers Chris T Freeman Paul L Lewin Electronics and Computer Science University of Southampton Southampton UK Faculty of Engineering and the Environment University of Southampton Southampton UK Department of Automatic Control and Systems Engineering University of Sheffield Sheffield UK Italian Institute of Technology Genoa Italy

In many practical applications, constraints are often present on, for example, the magnitudes of the control inputs. Recently, based on a novel successive projection framework, two constrained iterative learning control (ILC) algorithms were developed with different convergence properties and computational requirements. This paper investigates the effectiveness of these two methods experimentally on a gantry robot facility, which has been extensively used to test a wide range of linear model based ILC algorithms. The results obtained demonstrate the effectiveness of the algorithms in solving one form of the general constrained ILC problem.

关键词： Convergence Robots Algorithm design and analysis Prediction algorithms Trajectory Optimization

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Development of a wireless electronic shoe for walking abnormalities detection

Development of a wireless electronic shoe for walking abnorm...

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Biomedical engineering International Conference (BMEiCON)

作者： W. Donkrajang N. Watthanawisuth J. P. Mensing T. Kerdcharoen Material Science and Engineering Programme Faculty of Science Mahidol University Bangkok Thailand National Electronics and Computer Technology Center (NECTEC) Pathumthani Thailand Material Science and Engineering Programme Faculty of Science NANOTEC Center of Excellent National Nanotechnology Center Mahidol University Bangkok Thailand

ISBN: (纸本)9781467348904

This work portrays the development of wireless smart shoe for gait analysis. Force sensitive resistors (FSRs) and resistive bend sensor were employed by mounting onto a shoe for detection of pressure distribution beneath the foot during normal and abnormal walking. In the present study, we have been interested in 3 walking postures including normal walking, tiptoe walking and dragging foot walking. Wireless sensor network (WSN) based on ZigBee technology was employed in this work for data communication. The Principal component analysis (PCA) was used for pattern recognition in the analysis part. It was shown that the smart shoe was successful to classify between normal gait pattern and some abnormal gait patterns.

关键词： Legged locomotion Foot Footwear Zigbee Wireless sensor networks Wireless communication Force

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An automatic level set based liver segmentation from MRI data sets

An automatic level set based liver segmentation from MRI dat...

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Workshops on Image Processing Theory, Tools and Applications, IPTA

作者： Evgin Goceri Mehmet Z. Unlu Cuneyt Guzelis Oguz Dicle Computer Engineering Department Pamukkale University Denizli Turkey Electrical and Electronics Engineering Department İzmir Institute of Technology Urla Izmir Turkey Electronics and Telecommunications Engineering Department İzmir University of Economics Balcova Izmir Turkey Faculty of Medicine Radiology Department Dokuz Eylül University Narlidere Izmir Turkey

ISBN: (纸本)9781467325851

A fast and accurate liver segmentation method is a challenging work in medical image analysis area. Liver segmentation is an important process for computer-assisted diagnosis, pre-evaluation of liver transplantation and therapy planning of liver tumors. There are several advantages of magnetic resonance imaging such as free form ionizing radiation and good contrast visualization of soft tissue. Also, innovations in recent technology and image acquisition techniques have made magnetic resonance imaging a major tool in modern medicine. However, the use of magnetic resonance images for liver segmentation has been slow when we compare applications with the central nervous systems and musculoskeletal. The reasons are irregular shape, size and position of the liver, contrast agent effects and similarities of the gray values of neighbor organs. Therefore, in this study, we present a fully automatic liver segmentation method by using an approximation of the level set based contour evolution from T2 weighted magnetic resonance data sets. The method avoids solving partial differential equations and applies only integer operations with a two-cycle segmentation algorithm. The efficiency of the proposed approach is achieved by applying the algorithm to all slices with a constant number of iteration and performing the contour evolution without any user defined initial contour. The obtained results are evaluated with four different similarity measures and they show that the automatic segmentation approach gives successful results.

关键词： Liver Image segmentation Level set Active contours Shape Magnetic resonance imaging Biomedical imaging

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Modeling fuzzy temporal criteria in database querying

Modeling fuzzy temporal criteria in database querying

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International Conference on System Theory, Control, and Computing (ICSTCC)

作者： Cornelia Tudorie Mihai Vlase Cristina Nica Dan Munteanu Department of Computer and Information Technology Faculty of Automatic Control Computers Electrical Engineering and Electronics Dunãrea de Jos Galati University Romania Dunãrea de Jos Galati University Romania

Expressing user's preferences in database querying is best achieved by fuzzy modeling of linguistic terms included in selection criteria. This paper deals with temporal criteria, for querying date/time columns in classical relational databases. Fuzzy models for some linguistic terms and ways to operate with them, in order to evaluate queries, are proposed.

关键词： Pragmatics Computational modeling Relational databases Calendars computers Knowledge based systems

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Gardening cyber-physical systems

Gardening cyber-physical systems

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11th International Conference on Unconventional Computation and Natural Computation, UCNC 2012

作者： Stepney, Susan Diaconescu, Ada Doursat, René Giavitto, Jean-Louis Kowaliw, Taras Leyser, Ottoline MacLennan, Bruce Michel, Olivier Miller, Julian F. Nikolic, Igor Spicher, Antoine Teuscher, Christof Tufte, Gunnar Vico, Francisco J. Yamamoto, Lidia Dept. of Computer Science University of York United Kingdom LTCI CNRS Télécom-ParisTech France Universidad de Málaga Spain CNRS Paris France UMR STMS 9912 IRCAM - CNRS France Sainsbury Laboratory University of Cambridge United Kingdom Electrical Engineering and Computer Science University of Tennessee Knoxville TN United States LACL Université Paris-Est Créteil France Dept. of Electronics University of York United Kingdom Faculty of Technology Policy and Management Technical University of Delft Netherlands Dept. of Electrical and Computer Engineering Portland State University United States Dept. of Computer and Information Science NTNU Trondheim Norway

ISBN: (纸本)9783642328930

Today's artefacts, from small devices to buildings and cities, are, or are becoming, cyber-physical socio-technical systems, with tightly interwoven material and computational parts. Currently, we have to laboriously build such systems, component by component, and the results are often difficult to maintain, adapt, and reconfigure. Even "soft" ware is brittle and non-trivial to adapt and change. © 2012 Springer-Verlag.

关键词： Cyber Physical System

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Development of e-Health application for Medical Center in National Broadband Project

Development of e-Health application for Medical Center in Na...

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Biomedical engineering International Conference (BMEiCON)

作者： K. Noimanee S. Noimanee S. Wattanasirichaigoon N. La-oopugsin V. Mahasitthiwat K. Thongbunjob S. Tungjitkusolmun P. Ratleadkarn Department of Electronics Engineering King Mongkut's Institute of Technology Ladkrabang Thailand Department of Computer Engineering Faculty of Engineering Chiang Mai University Thailand HRH Princess Maha Chakri Sirindhorn Medical Center Thailand Planet Communication Asia Company Limited Thailand

This article aims to publish research, development of remote medical services. Also known as e-Health for medical application National Broadband Project. The prototype HRH Princess Maha Chakri Sirindhorn Medical Center Nakhon Nayok Province. This project is integrating other sciences such as Biomedical engineering, Telecommunications engineering, Electronic engineering, and Computing engineering and includes both direct medical and so on. This project is focus for medical services to around communities who live within the radius of radio wave propagation in the area of 2,500-2,520 MHz for spread to Thailand based on international standards of wireless broadband technology. This project consists of four sub-projects were: - Sub-project 1st: Development of Patient's Electrocardiogram Monitoring on WiMAX technology around MSMC Sub-project 2nd: Primary Health Care Mobile Doctor and Development of Tele-Consult while Home Visit by Patients via WiMAX around MSMC.

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Efficient person recognition by Finger-Knuckle-Print based on 2D Discrete Cosine Transform

Efficient person recognition by Finger-Knuckle-Print based o...

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International Conference on Information technology and e-Services (ICITeS)

作者： Mohammed Saigaa Abdallah Meraoumia Salim Chitroub Ahmed Bouridane Signal and Image Processing Laboratory Electronics and Computer Science Faculty University of Sciences and Technology Houari Boumediene Algiers Algeria School of Computing Engineering and Information Sciences Northumbria University Newcastle-upon-Tyne UK

Biometric system has been actively emerging in various industries for the past few years, and it is continuing to roll to provide higher security features for access control system. In the recent years, hand based biometrics is extensively used for personal recognition. In this paper a new biometric system based on texture of the hand knuckles, namely Finger-Knuckle-Print (FKP), is proposed. To extract the image local texture information and represent the FKPs features, the 2D Block based Discrete Cosine Transform (2D-BDCT), is employed. Finally, performance of all finger types is determined individually and a min rule fusion is applied to develop a multimodal system. Experimental results show that 2D-DCT-mod2 yields the best performance for identifying FKPs and it is able to provide an excellent recognition rate and provide more security.

关键词： Feature extraction Biometrics Databases Vectors Thumb Discrete cosine transforms

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Modeling of a 150W DCDC series-parallel resonant converter with integrated magnetic component

Modeling of a 150W DCDC series-parallel resonant converter w...

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International Conference on Signals and Electronic Systems, ICSES

作者： Rafał Widórek Slawomir Ligenza Faculty of Electrical Engineering Automatics Computer Science and Electronics AGH University of Technology and Science Krakow Poland Fideltronik IMEL Research & Developement Fideltronik IMEL Sp. z o.o. Krakow Poland

A 150W series-parallel resonant converter dedicated for audio-video equipment is proposed. The converter utilizes an integrated magnetic component that allows for easier inductor design and improvement in size and efficiency. A performance analysis focusing converter losses is conducted followed by creation of a simulation model, that includes various sources of losses is presented. The simulation model includes a simplified method for calculating core losses based on the common core parameters and the value of the flux flowing through that core. Lastly the converter simulation model is verified with measurement from a physical model. The establishment of this kind of model will useful in the future for predicting performance when different control schemes are applied.

关键词： Windings Magnetic flux Magnetic resonance Mathematical model Transformer cores RLC circuits

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Parameter sensitivity study for optimization of field-excitation flux switching synchronous machine for hybrid electric vehicles

Parameter sensitivity study for optimization of field-excita...

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IEEE Conference on Industrial electronics and Applications (ICIEA)

作者： Erwan Sulaiman Takashi Kosaka Faculty of Electrical & Electronics Engineering University Tun Hussein Onn Malaysia (UTHM) Batu Pahat Johor Malaysia Dept. of Electrical & Computer Science Eng. Nagoya Institute of Technology (NIT) Nagoya Japan

This paper presents parameter sensitivity study and performance analysis of field-excitation flux switching synchronous machine (FEFSSM) for hybrid electric vehicle (HEV) applications. The proposed machine consists of 12 armature slots, 12 field-excitation coil (FEC) slots and 10 rotor poles. All active parts such as armature coil and FEC are located on the stator, while the rotor part consists of only single piece iron. This makes the machine becoming more robust and more suitable to be apply for high speed motor drive system application. The target performances of the motor are a maximum torque of 210Nm, a maximum power of 123kW, a power density of more than 3.5kW/kg, and a maximum speed of 20,000r/min. The deterministic design optimization approach is used to treat several design parameters defined in rotor, armature and FEC slot area until the target performances are achieved. Results based on 2D-FEA show that the final design has successfully achieved the target performances, achieved much higher power density of approximately 4.82kW/kg, and has good rotor mechanical strength at maximum speed compared to existing IPMSM installed on a commercial SUV-HEV.

关键词： Rotors Torque Coils Stators Hybrid electric vehicles Density measurement Power system measurements

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