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International Conference on Information Management and engineering, ICIME

作者： M.F. Misman S. Deris S.Z.M. Hashim R. Jumali M.S. Mohamad Artificial Intelligence and Bioinformatics Laboratory Department of Software Engineering Faculty of Computer Science and Information System Universiti Teknologi Malaysia Skudai Johor Malaysia

ISBN: (纸本)9781424437740

In this review, we have discussed about approaches in pathway based microarray analysis. Commonly, there are two approaches in pathway based analysis, Enrichment Score and Supervised Machine Learning. These pathway based approaches usually aim to statistically define significant pathways that related to phenotypes of interest. Firstly we discussed an overview of pathway based microarray analysis and its general flow processes in scoring the pathways, the methods applied in both approaches, advantages and limitations based on current researches, and pathways database used in pathway analysis. This review aim to provide better understanding about pathway based microarray analysis and its approaches.

关键词： Linear feedback shift registers Random number generation Shift registers Cryptography Random sequences Feedback circuits State feedback Flip-flops Information management computer science

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Volume phase transitions of smectic gels

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Physical Review E 2009年第5期79卷 051704-051704页

作者： Akihiko Matsuyama Department of Bioscience and Bioinformatics Faculty of Computer Science and System Engineering Kyushu Institute of Technology Kawazu 680-4 Iizuka Fukuoka 820-8502 Japan. matuyama@bio.kyutech.ac.jp

We present a mean-field theory to describe volume phase transitions of side-chain liquid crystalline (LC) gels, accompanied by isotropic-nematic-smectic-A phase transitions. Three different uniaxial nematic phases (N1, N2, and N3) and smectic-A phases (S1, S2, and S3) are defined by using orientational order parameter Sm of side-chain liquid crystals (mesogens), Sb of semiflexible backbone chains, and a translational order parameter σ for a smectic-A phase. We derive the free energy for smectic-A phases of side-chain LC gels dissolved in an isotropic solvent and examine the swelling curve of the LC gel, the orientational order parameters, and the deformation of the LC gel as a function of temperature. We find that the LC gel discontinuously changes the volume at an isotropic-nematic, an isotropic-smectic-A, and a nematic-smectic-A phase transition.

关键词： Chains

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Modelling and simulation of modified unipolar PWM scheme on a single phase DC-AC converter using PSIM

Modelling and simulation of modified unipolar PWM scheme on ...

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Student Conference on Research and Development (SCOReD)

作者： M. F. N. Tajuddin N. H. Ghazali T. C. Siong N. Ghazali School of Electrical System Engineering Universiti Malaysia Pedis Perlis Malaysia Faculty of Computer Science and Information Technology Universiti Teknologi Malaysia Johor Malaysia

ISBN: (纸本)9781424451869;9781424451876

Pulse-width modulation (PWM) of a signal or power source involves the modulation of its duty cycle, to either convey information over a communications channel or control the amount of power sent to a load. This paper presents work on modelling and simulation of modified unipolar PWM applied to a single phase DC-AC converter (inverter) as switching control schemes. The harmonic analysis for switching algorithm is done and the best parameters which results in less electromagnetic interference noise produced were chosen to be applied on the inverter using PSIM simulation software. The inverter and its LC filters component value are fixed and carefully selected by considering their volumes and prices as it will be applied in a real hardware to ease any future hardware setup.

关键词： Pulse width modulation Pulse width modulation converters Pulse width modulation inverters Communication system control Communication switching Electromagnetic interference Hardware Space vector pulse width modulation Communication channels Switching converters

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TMS320F2812 Digital Signal Processor (DSP) implementation of DPWM

TMS320F2812 Digital Signal Processor (DSP) implementation of...

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Student Conference on Research and Development (SCOReD)

作者： M. F. N. Tajuddin N. H. Ghazali M. F. Mohammed B. Ismail Z. M. Isa T. C. Siong N. Ghazali School of Electrical System Engineering Universiti Malaysia Pedis Perlis Malaysia Faculty of Computer Science and Information Technology Universiti Teknologi Malaysia Johor Malaysia

ISBN: (纸本)9781424451869;9781424451876

This paper presents the programming and use of TMS320F2812 digital signal processor (DSP) in generating the digital pulse width modulation (DPWM). The structure and functions of eZdsp 2812 board used in this work is explained briefly and the steps need to be taken for the programming is explain in detail to control the frequency, the duty cycle and dead band of the generated PWM. The PWM generated by DSP from programming can be used to control and regulate power electronic converters.

关键词： Digital signal processors Digital signal processing Pulse width modulation Pulse generation Signal generators Space vector pulse width modulation Digital modulation Modulation coding Functional programming Frequency

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Low Cost RT Process Control Using Windows PLC by MATLAB/Simulink Throw the REX Control system by Secured Wireless Network

Low Cost RT Process Control Using Windows PLC by MATLAB/Simu...

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ICONS International Conference on systems

作者： Ondrej Krejcar Petr Konarik Department of Measurement and Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava-Poruba Department of Measurement and Control Centre for Applied Cybernetics Faculty of Electrical Engineering and Computer Science Ostrava-Poruba Czech Republic Department of Control System and Instrumentation VSB-Technical University of Ostrava Faculty of Mechanical Engineering Ostrava-Poruba Czech Republic

Paper deals with industrial realization of feedback control of demanding applications on theirs control, control algorithms and visualization together with real time control from MATLAB/Simulink Environment. Paper shows direct connection and implementation way of designed control schemas of prepared applications to an industrial WinPLC. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution.

关键词： Costs Process control Programmable control MATLAB Control systems Wireless networks Electrical equipment industry Industrial control Pulp and paper industry Feedback control

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An Approach for Heartbeat Sound Transcription

An Approach for Heartbeat Sound Transcription

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International Conference on computer Technology and Development (ICCTD)

作者： Ehsan Safar Khorasani Shyamala Doraisamy Farshad Arvin Department of Multimedia Faculty of Computer Science Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia Department of Computer System Engineering Universiti Putra Malaysia Serdang Selangor Darul Ehsan Malaysia

This paper presents a heart sound transcription technique to provide semi-structured musical data. The heart beat samples were captured using stethoscope and recorded in pulse-code modulation (PCM) method into several differing audio file formats. Pitch tracking algorithm were utilized for the heartbeat transcription into MIDI generation. We propose the use of several sound processing techniques to improve the transcription. Several experiments using a collection recorded heartbeats illustrate the feasibility of using this note transcription approach in heart sound.

关键词： Heart beat Stethoscope Pulse modulation Phase change materials Music information retrieval Frequency Data mining Cardiac disease Acoustical engineering systems engineering and theory

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On the origin of satellite swarms

On the origin of satellite swarms

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60th International Astronautical Congress 2009, IAC 2009

作者： Verhoeven, C.J.M. Bentum, M.J. Monna, G.L.E. Rotteveel, J. Faculty of Aerospace Engineering - Space System Engineering Technical University of Delft Kluyverweg 1 2629 HS Delft Netherlands Department of Mathematics and Computer Science Faculty of Electrical Engineering University of Twente P.O. Box 217 7500 AE Enschede Netherlands ASTRON P.O. Box 2 7900 AA Dwingeloo Netherlands SystematIC Design Motorenweg 5G 2623 CR Delft Netherlands ISIS - Innovative Solutions in Space Rotterdamseweg 380 2629 HG Delft Netherlands

ISBN: (纸本)9781615679089

For a species to develop in nature basically two things are needed: An enabling technology and a "niche". In spacecraft design the story is the same. Both a suitable technology and a niche application need to be there before a new generation of spacecraft can be developed. In the last century two technologies have emerged which had and still have a huge impact on the development of technical systems: Micro-Electronics (ME) and Micro-systems Technology (MST). Many different terrestrial systems have changed dramatically since the introduction of ME and MST and many new systems have emerged. In the same period many nano-satellites have been built and launched and shown that they can perform in space. Still it is not clear what the specific role of these small satellites will be. Where will they go? What will they do?.

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Lightpath reconfiguration management system for IP-over-CWDM networks with ROADMs, based on equivalent graph method

Lightpath reconfiguration management system for IP-over-CWDM...

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IEEE Region 10 International Conference TENCON

作者： Raja Zahilah Soichiro Nishiuma Md. Nooruzzaman Nguyen Thi Thanh Thuy Osanori Koyama Yutaka Katsuyama Faculty of Computer Science and Information System Universiti Teknologi Malaysia Malaysia Johor Bahru Johor Malaysia Graduate School of Engineering Osaka Prefecture University Sakai Osaka Japan

Lightpath reconfiguration management system has been designed and implemented for IP-over-CWDM networks with ROADMs. The system can search possible lightpaths made by ROADMs with specified switch states. The function is based on an equivalent graph method proposed for representing the ROADMs, and can output lightpaths in the network together with the total loss values. The system enables the network administrators to manage the lightpath reconfigurations effectively without errors by avoiding making unlinked lightpaths through routes with higher losses to connect nodes, before the reconfiguration.

关键词： Optical fiber networks Optical switches Optical losses Transceivers Optical fiber couplers computer network management engineering management Power system management Communication system traffic control Communication system control

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Remote wireless low cost RT process control using Windows PLC by MATLAB/Simulink throw the REX control system

Remote wireless low cost RT process control using Windows PL...

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IEEE GCC Conference & Exhibition

作者： Ondrej Krejcar Petr Konarik Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre of Applied Cybernetics VSB-Technical University of Ostrava Ostrava Poruba Czech Republic Faculty of Mechanical Engineering Department of Control System and Instrumentation VSB-Technical University of Ostrava Ostrava Poruba Czech Republic

Paper shows direct connection and implementation way of designed control schémas of prepared applications to an industrial WinPLC. Paper deals with industrial realization of feedback control of demanding applications on their control, control algorithms and visualization together with design, implementation and real time control from MATLAB/Simulink Environment. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution. As next benefit the application is created for visualization the data from RT database during the measurement and control process. This last benefit produce an interesting data from real control process to give a next reason to use of WinCon solution.

关键词： MATLAB Libraries Control systems Process control Real time systems Algorithm design and analysis Servers

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WinPLC control from MATLAB/Simulink Environment throw the Multiplatform Control system REX by Secured Wireless Network

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IFAC Proceedings Volumes 2009年第1期42卷 13-16页

作者： Ondrej Krejcar Petr Konarik Tutsch Michal VSB-Technical University of Ostrava Faculty of Electrical Engineering and Computer Science Department of Measurement and Control Centre for Applied Cybernetics 17. listopadu 15 708 33 Ostrava- Poruba VSB-Technical University of Ostrava Faculty of Mechanical Engineering Department of Control System and Instrumentation 17. listopadu 15 708 33 Ostrava- Poruba

Paper deals with industrial realization of feedback control of demanding applications on their control, control algorithms and visualization together with design, implementation and real time control from MATLAB/Simulink Environment. Paper shows direct connection and implementation way of designed control schemas of prepared applications to an industrial WinPLC. Described is a way to produce a permanent solution in control applications that are fully prepared, designed and implemented directly from MATLAB/Simulink to the target control platform. As a part, the mentioned solution is using a multiplatform control system REX as a bridge between MATLAB and target platforms. These methods allow minimizing costs of development of control of applications, because it produces target permanent realizations in comparison to classical development methods that usually need expensive real time measurement cards and produce only one purpose development solution.

关键词： WinPLC Matlab Simulink Control system REX Control Real Time

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