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Measurement of capacitance and electrical potential of plural points for estimation of permittivity distribution

IEEJ Transactions on Fundamentals and Materials 2013年第4期133卷 173-179+5页

作者： Okada, Shota Ohchi, Masashi Furukawa, Tatsuya Itoh, Hideaki Fukumoto, Hisao Master's Program in Electrical Graduate School of Engineering Chiba Institute of Technology 2-17-1 Tudanuma Narashino 275-0016 Japan Department of Electrical Electronics and Computer Engineering Faculty of Engineering Chiba Institute of Technology 2-17-1 Tudanuma Narashino 275-0016 Japan Graduate School of Science and Engineering Saga University 1 Honjo-machi Saga 840-8502 Japan

Recently, a method for estimating permittivity distributions was reported. The method combined a numerical technique (Finite Element Method) with Genetic Algorithm (GA). However, methods for estimating the distribution of permittivity have not yet been established. The purpose of this study is to obtain experimental data in order to improve the estimation method. We measured capacitance and electrical potential of plural points when an acrylic rod is placed in various positions within a measurement system. © 2013 The Institute of Electrical Engineers of Japan.

关键词： Capacitance

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Development and evaluation of a hospital-wide healthcare-associated surgical site infection detection algorithm

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Journal of Microbiology, Immunology and Infection 2015年第2期48卷 S43-S43页

作者： Yi-Ju Tseng Bo-Chiang Huang Hui-Chi Lin Ming-Yuan Chen Rung-Ji Shang Wang-Huei Sheng Yee-Chun Chen Feipei Lai Shan-Chwen Chang Children's Hospital Informatics Program Boston Children's Hospital Boston MA USA Graduate Institute of Biomedical Electronics and Bioinformatics National Taiwan University Taiwan Center for Infection Control National Taiwan University Hospital (NTUH) Taiwan Information Systems Office NTUH Taipei Taiwan Department of Internal Medicine NTUH and College of Medicine Taiwan National Institute of Infectious Diseases and Vaccinology National Health Research Institutes Taiwan Department of Computer Science and Information Engineering National Taiwan University Taiwan

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Hardware-based parallel firefly algorithm for embedded applications

Hardware-based parallel firefly algorithm for embedded appli...

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2013 NASA/ESA Conference on Adaptive Hardware and Systems, AHS 2013

作者： Muñoz, Daniel M. Llanos, Carlos H. Dos Santos Coelho, Leandro Ayala-Rincón, Mauricio Electronics Engineering Graduate Program Faculty of Gama University of Brasilia Brasilia DF Brazil Department of Mechanical Engineering Automation and Control Group/GRACO University of Brasilia Brasilia DF Brazil Industrial and Systems Engineering Graduate Program LAS/PPGEPS Pontifical Catholic University of Parana Curitiba Parana Brazil Departments of Computer Science and Mathematics University of Brasilia Brasilia DF Brazil

ISBN: (纸本)9781467363839

The firefly algorithm (FA) is a new population-based metaheuristic bioinspired on the behavior of the flashing characteristics of fireflies. As a population-based algorithm, the FA suffers from large execution times specifically for embedded optimization problems with computational limitations. For reducing execution times we propose a hardware parallel architecture of the FA algorithm that facilitates the implementation in Field programmable Gate Arrays (FPGAs). In addition, this work proposes the application of the opposition-based learning (OBL) approach to the FA algorithm. The respective hardware implementation (HPOFA) was mapped into a Virtex5 FPGA device and numerical experiments using four well-known benchmark problems demonstrate that the opposition-based approach allows the FA algorithm to improve its functionality, preserving the swarm diversity and avoiding the premature convergence problem. Synthesis results point out that the HPOFA architecture is effectively mapped in hardware and is suitable for embedded applications. © 2013 IEEE.

关键词： Parallel architectures

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An advanced key management scheme for secure smart grid communications

An advanced key management scheme for secure smart grid comm...

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IEEE International Conference on Smart Grid Communications (SmartGridComm)

作者： Xuelian Long David Tipper Yi Qian Graduate Telecommunications and Networking Program University of Pittsburgh Pittsburgh PA Department of Computer and Electronics Engineering University of Nebraska-Lincoln Lincoln NE USA

In the smart grid, collecting data from remote sensors and meters such as phasor measurement units (PMUs) can help ensure safe and reliable operation, avoiding overloads and outages. Since such data is related to critical operation of the power grid, appropriate security schemes should be utilized for secure communications among the components in the smart grid. This paper proposes a key management scheme for secure data communications in a smart grid system. It is a versatile key management scheme in that it can support unicast, multicast and broadcast communications. Moreover, the proposed scheme can be tailored to the hierarchical control system structure of the smart grid. A comparative security cost analysis is performed to illustrate that the proposed scheme can achieve efficient key management.

关键词： Smart grids Binary trees Security Unicast Multicast communication Vegetation

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Hardware-based parallel firefly algorithm for embedded applications

Hardware-based parallel firefly algorithm for embedded appli...

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NASA/ESA Conference on Adaptive Hardware and Systems (AHS)

作者： Daniel M. Muñoz Carlos H. Llanos Leandro dos Santos Coelho Mauricio Ayala-Rincón Electronics Engineering Graduate Program Faculty of Gama University of Brasilia Brasilia DF Brazil Department of Mechanical Engineering University of Brasilia Brasilia DF Brazil Industrial and Systems Engineering Graduate Program LAS/PPGEPS Pontifical Catholic University of Parana Curitiba Parana Brazil Departments of Computer Science and Mathematics University of Brasilia Brasilia DF Brazil

ISBN: (纸本)9781467363822

关键词： Hardware computer architecture Optimization Equations Random access memory Field programmable gate arrays Search problems

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Band classification based on chromosome shapes

Band classification based on chromosome shapes

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Biomedical engineering International Conference (BMEiCON)

作者： Ravi Uttamatanin Peerapol Yuvapoositanon Apichart Intarapanich Saowaluck Kaewkamnerd Sissades Tongsima The Electrical Engineering Graduate Program Mahanakorn University of Technology Bangkok Thailand National Electronics and Computer Technology Center Pathum thani Thailand Electronic Engineering Department Mahanakorn University of Technology Bangkok Thailand National Center for Genetic Engineering and Biotechnology Pathum thani Thailand

For an automatic chromosome classification, band resolution information is required in order to perform diagnosis on numerical and structural abnormalities. Metaphases with low band resolution are normal used for numerical abnormality analysis while metaphases with high band resolution are used for structural abnormality analysis. In our work, we classify metaphases into low and high band resolution groups using chromosome shape. This band classification task can automatically perform without human intervention leading to faster the diagnosis process. The results showed that chromosome shape information is able to classify metaphases into low and high band resolution groups with the accuracy of 73.08% and 95.24%, respectively.

关键词： Biological cells Image resolution Probability density function Shape Accuracy Image segmentation Microscopy

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Impact response measurement of contact lenses 5

Impact response measurement of contact lenses

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5th International Conference on Advanced Micro-Device engineering, AMDE 2013

作者： Watanabe, Kazuhide Miyashita, Naoki Bin, Du Hong Irisa, Kyohei Takita, Akihiro Yamaguchi, Takao Carcasona, Edwin Mitatha, Somsak Fujii, Yusaku Education Program of Electronics and Infomatics Mathematics and Physics Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Department of Electronics Faculty of Engineering Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Education Program of Mechanical Science and Technology School of Science and Technology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Department of Electronics Graduate School of Engineering Gunma University 1-5-1 Tenjin-cho Kiryu376-8515 Japan Division of Mechanical Science and Technology Faculty of Science and Technology Gunma University 1-5-1 Tenjin-cho Kiryu Gunma376-8515 Japan Department of Mechanical Engineering University of San Carlos Cebu City230-0100 Philippines Hybrid Computing Research Laboratory School of Computer Engineering Faculty of Engineering King Mongkut's Institute of Technology Ladkrabang Chalongkrung Road Bangkok Thailand

ISBN: (纸本)9783038354659

Impact response of contact lenses is measured using the Levitation Mass Method (LMM). In the LMM, a small mass collides with contact lenses and the impact force is measured with high accuracy as the inertial force of the moving part. A pneumatic linear bearing is used to achieve linear motion with sufficiently small friction acting on the moving part. Hysteresis loop and consumed energy as mechanical characteristics of contact lenses are also calculated.. © (2015) Trans Tech Publications, Switzerland.

关键词： Contact lenses

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An Efficient Hybrid Model and Dynamic Performance Analysis for Multihop Wireless Networks

An Efficient Hybrid Model and Dynamic Performance Analysis f...

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International Conference on Computing, Networking and Communications

作者： Kunjie Xu David Tipper Prashant Krishnamurthy Yi Qian Graduate Telecommunications and Networking Program University of Pittsburgh Department of Computer and Electronics Engineering University of Nebraska-Lincoln

ISBN: (纸本)9781467352871

Multihop wireless networks can be subjected to nonstationary phenomena due to a dynamic network topology and time varying traffic. However, the simulation techniques used to study multihop wireless networks focus on the steady-state performance even though transient or nonstationary periods will often occur. Moreover, the majority of the simulators suffer from poor scalability. In this paper, we develop an efficient performance modeling technique for analyzing the time varying queueing behavior of multihop wireless networks. The one-hop packet transmission (service) time is assumed to be deterministic, which could be achieved by contention-free transmission, or approximated in sparse or lightly loaded multihop wireless networks. Our model is a hybrid of time varying adjacency matrix and fluid flow based differential equations, which represent dynamic topology changes and nonstationary network queues, respectively. Numerical experiments show that the hybrid fluid based model can provide reasonably accurate results much more efficiently than standard simulators. Also an example application of the modeling technique is given showing the nonstationary network performance as a function of node mobility, traffic load and wireless link quality.

关键词： function wireless performance

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Chromosome Classification for Metaphase Selection

Chromosome Classification for Metaphase Selection

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International Symposium on Communications and Information Technologies

作者： Ravi Uttamatanin Peerapol Yuvapoositanon Apichart Intarapanich Saowaluck Kaewkamnerd Sissades Tongsima The Electrical Engineering Graduate Program Faculty of Engineering Mahanakorn University of Technology Bangkok Thailand Electronic Engineering Department Mahanakorn University of Technology Bangkok Thailand National Electronics and Computer Technology Center Pathumtani Thailand National Center for Genetic Engineering and Biotechnology Pathumtani Thailand

ISBN: (纸本)9781467355797

Identification of good metaphase spread is an important step in chromosome analysis for genetic disorder detection. In this paper, we propose a rule for chromosome classification to identify good metaphase spreads. The chromosome shapes were classified into four main classes. The first and the second classes refer to individual chromosomes with straight and bended shapes, respectively. The third class is characterized as those chromosomes with overlapping bodies and the forth class is for the non-chromosomal artifacts. Good metaphase spreads should largely contain the first and the second classes while the number of the third class should be kept minimal. Several image parameters were examined and used for creating rule-based classification. The threshold value for each parameter is determined using statistical model. We observed that the empirical probability density function of the parameters can be represented by Gaussian model and, hence, the threshold value can be easily determined. The proposed rules can efficiently and accurately classify the individual chromosome with > 90% accuracy.

关键词： Chromosome Metaphase selection Metaphase spread Rule base classification Gaussian model

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Developing a Smart Grids System as a PBL with Agile Method on computer engineering Courses

Developing a Smart Grids System as a PBL with Agile Method o...

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International Conference on Information Technology: New Generations (ITNG)

作者： Caio Henrique Coutinho Johnny Cardoso Marques Sarasuaty Megume Hayashi Yelisetty Samoel Mirachi Alexandre Lima Possebon Ribeiro Marcelo Amaral da Silva Adilson Marques da Cunha Luiz Alberto Vieira Dias Electronics and Computer Engineering Graduate Program Brazilian Aeronautics Institute of Technology (Instituto Tecnologico de Aeronatica-ITA) Sao Jose dos Campos Brazil

This paper describes an experiment of integrating three courses at the Brazilian Aeronautics Institute of Technology, within the Electronic and computer engineering graduate program on the 1st semester of 2011. A smart grids system was used as a Problem Based Learning (PBL) strategy together with an agile method and best practices within a project developed on three courses: CE-240 Database Systems Project, CE-245 Information Technologies, and CE-229 Software Testing. Students of these courses had to interact, in order to produce a prototype of a smart grids system, simulating a real project development. At the end, a survey among students has proved that the integration of practical exercises has provided higher levels of understanding and problem solving capabilities, improving students' knowledge. The survey also has shown that communication between students from different courses should be improved. The major findings of this paper were that the integration of the three courses was favorable by 83% of the surveyed students, and most students (73%) have considered that their knowledge was improved. Authors recommend the use of practical exercises, courses integration, and PBL to considerably increase the quality of electronic and computer engineering courses.

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