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IEEE Symposium on Nuclear Science (NSS/MIC)

作者： R. Klein M. Lortie A. Adler R.S. Beanlands R. deKemp Natural Sciences and Engineering Research Council of Canada University of Ottawa Heart Institute Ottawa ONT Canada Department of System and Computer Engineering Carleton University Ottawa ONT Canada School of Information Technology and Engineering (SITE) University of Ottawa Canada National Cardiac PET Center University of Ottawa Heart Institute Ottawa ONT Canada

Left ventricle myocardial activity (LV) from volumetric images is commonly presented in a 2D format called a polar map. Few applications offer complete automation of the registration and sampling process, which may lead to biasing of the results by the user and increased variability. A fully automated process is described which includes two steps: reorientation of the data to a common LV reference frame, and registration of the LV using a deformable spline model. The software implementation of this algorithm consists of a graphical user interface (GUI) that enables the user to verify the process, and to intervene in cases where automation may fail. 135 PET images (consisting of several tracers, in rest and stress, and in humans and dogs) were processed and visually validated. All but one case (99.3%) were successfully handled by the automated process.

关键词： Image sampling Positron emission tomography Automation Graphical user interfaces Myocardium Application software Spline Deformable models Software algorithms Stress

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Adaptive input estimation method combining finite element scheme for inverse jet flow heat flux estimating

Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute ...

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Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute of Technology 2006年第2期34卷 21-32页

作者： Chen, Tai-Sheng Jang, Horng-Yuan Chen, Tsung-Chien Tuan, Pan-Chio Department of System Engineering Chung Cheng Institute of Technology National Defense University Taiwan Department of Computer Science and Information Engineering Nan Kai Institute of Technology Taiwan

A missile launch will produce a high temperature jet flow, the high temperature jet flow effects on the design and prime cost for fireproof decking is considered. This work presents an on-line inverse method based on the adaptive input estimation method that combines the finite element scheme to estimate unknown jet flow heat flux. The temperature is measured using a thermocouple at the outer surface of a steel plate. The input estimator develops a recursive relation between the observed residual sequence value with unknown heat flux and a theoretical residual sequence to improve the state estimate accuracy and avoid the divergence problem. A recursive least square estimator is derived that uses the residual innovation sequence to compute the magnitude of the unknown jet flow heat flux. The superior capabilities of the proposed method are analyzed and demonstrated using several typical cases with time varying jet flow heat flux input. The results show that the proposed method has the advantages of stability and good accuracy.

关键词： Adaptive input estimation method Finite element scheme Jet flow heat flux

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A research on anti-radiation passive ranging technique for anti-ship missile

Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute ...

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Chung Cheng Ling Hsueh Pao/Journal of Chung Cheng Institute of Technology 2006年第2期34卷 57-70页

作者： Lee, Sou-Chen Wu, Yet-Ta Department of Computer Information and Network Engineering LungHwa University of Science and Technology Taiwan Department of System Engineering Chung Cheng Institute of Technology National Defense University Taiwan

The active radar operation principle will face a rigorous challenge in modern electronics warfare, being a new direction finding and ranging technique development, the source of radiation of target must be requested possessing a silence manner for signal intelligence communication. This paper discusses the angle-only tracking algorithm for an over-flight missile by a consecutive measure to locate the position of target's emission source. The paper also concerned an important issue in terminal phase, about it was found that the chaff were dispersed from a target, it may cause an ambiguity when the passive ranging was applied and an active seeker was be turned on. It discusses an identification technique from the time domain viewpoint and to separate a target from ambiguity environments. Firstly, it use the IE method to estimate the position of a target. Secondly, it was considered the chaff effect with respect to the target in terminal course. A simulation results will then demonstrate that the accuracy of dynamics identification has been improved by the adaptive IE scheme, thus the proposed method was allowed the seeker to be armed with a more accurate estimate method.

关键词： Adaptive input estimation (IE) Direction fiding Passive ranging

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Data mining algorithm based on genetic algorithm and its application

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Harbin Gongcheng Daxue Xuebao/Journal of Harbin engineering University 2006年第SUPPL.期27卷 384-388页

作者： Zhang, Xi-Zheng Xing, Li-Ning Wu, Xi Department of Computer Science Hunan Engineering Institute Xiangtan 411101 China School of Information System and Management National University of Defense Technology Changsha 410073 China

The study of job shop scheduling is of great significance in theory and realism. This paper presents novel data mining algorithms for the extraction of knowledge from a large set of job shop schedules. The purposes of this work is to apply data mining methodologies to explore the patterns in the data generated by a genetic algorithm performing a scheduling operation and to develop a rule set scheduler which approximates the genetic algorithm's scheduler. These rules can duplicate the genetic algorithm's performance on an identical problem and provide solutions that are generally superior to a simple dispatching rule for similar problems. At the end of this paper, the experimental results have shown that the proposed approach has good performance with respect to the quality of solution and the speed of computation.

关键词： Genetic algorithms

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FDEWS 2.0: A Web-GIS-Based Early Warning system for Fish Disease via Water Quality Management

FDEWS 2.0: A Web-GIS-Based Early Warning System for Fish Dis...

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World Congress on Intelligent Control and Automation (WCICA)

作者： Nan Li Zetian Fu Boqi Wang Xiaoshuan Zhang College of Engineering China Agricultural University Beijing China College of Resources and Environment China Agricultural University Beijing China Key Laboratory for Modern Precision Agriculture System Integration China Agricultural University Beijing China Key Laboratory for computer information management technology Suzhou University Jiangsu China

The water quality is the most vital factor in a successfully healthy aquaculture. After investigation by 415 fish disease cases and experiments, it is found that eutrophication and the pollutants of NH3, H2S as well as heavy metals and organic compounds are the main reasons of inducing fish disease in the north of China. Generally speaking, an early warning system for fish disease based on water management is a cheaper and alternative choice available for the fish farmers to warn the risks and to minimize disease problems. A Web-GIS-based fish disease early-warning system (FDEWS 2.0) based on water quality management has been developed by us. Building a water quality monitoring network in the aquafarm and integrating a series of simulation models with the GIS and the World-Wide-Web (WWW) are the key advantages of this system

关键词： Alarm systems Marine animals Diseases Quality management Water pollution Aquaculture Organic compounds Risk management Monitoring Geographic information systems

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Local Learning and Search in Memetic Algorithms

Local Learning and Search in Memetic Algorithms

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Congress on Evolutionary Computation

作者： F.G. Guimaraes E.F. Wanner F. Campelo R.H.C. Takahashi H. Igarashi D.A. Lowther J.A. Ramirez Department of Electrical Engineering Federal University of Minas Gerais Belo Horizonte Minas Gerais Brazil Research Group of Informatics for System Synthesis Graduate School of Information Science and Technology Hokkaido University Sapporo Japan Department of Mathematics Federal University of Minas Gerais Belo Horizonte Minas Gerais Brazil Department of Electrical and Computer Engineering McGill University Montreal Canada

The use of local search in evolutionary techniques is believed to enhance the performance of the algorithms, giving rise to memetic or hybrid algorithms. However, in many continuous optimization problems the additional cost required by local search may be prohibitive. Thus we propose the local learning of the objective and constraint functions prior to the local search phase of memetic algorithms, based on the samples gathered by the population through the evolutionary process. The local search operator is then applied over this approximated model. We perform some experiments by combining our approach with a real-coded genetic algorithm. The results demonstrate the benefit of the proposed methodology for costly black-box functions.

关键词： Evolutionary computation Employment Sampling methods Cost function Genetic algorithms Mathematics Informatics information science Design optimization Design automation

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Detection and Avoiding Ventricular Suction of Ventricular Assist Devices

Detection and Avoiding Ventricular Suction of Ventricular As...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： A. Tanaka M. Yoshizawa P. Olegario D. Ogawa K. Abe T. Motomura S. Igo Y. Nose Faculty of Symbiotic System Science Fukushima University Fukushima Japan Information Synergy Center University of Tohoku Sendai Japan Graduate School of Engineering University of Tohoku Sendai Japan Department of Computer Science College of Engineering Nihon University Koriyama Japan Michael E. DeBakey Department of Surgery Baylor University College of Medicine Houston TX USA

Continuous flow blood pumps, such as axial flow and centrifugal pumps, have been gaining interest as circulatory devices for total artificial hearts (TAHs) and a biventricular assist device (BVAD) because of their smaller size and simpler structure compared to pulsatile pumps. However, continuous flow pumps are more prone to suction of the left ventricle than pulsatile pumps are. Sudden increases in flow rate to meet changes in physiological demand, especially in the left pump, often cause ventricle suction. In this study, a control algorithm to prevent suction from occurring in the left ventricle by controlling the rotational speed of the right pump, instead of reducing the cardiac output of the left pump, was developed and investigated. The method was tested in acute animal experiments with calves. The results indicate that this proposed method is capable of preventing suction and could simultaneously maintain circulatory control. A key advantage of this control system is that flow rates can be maximized while avoiding ventricle suction conditions particularly when the circulatory system is unstable such as in a the first few days after operation

关键词： Artificial heart Biomedical engineering Electronic mail Testing Animals Control systems Circulatory system Blood flow Pressure control Medical control systems

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Development of a virtual needle biopsy simulation system for the virtual prostate

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systems and computers in Japan 2006年第1期37卷 93-104页

作者： Deguchi, Daisuke Mori, Kensaku Mekada, Yoshito Hasegawa, Jun-Ichi Toriwaki, Jun-Ichiro Noguchi, Masanori Graduate School of Engineering Nagoya University Nagoya 464-8603 Japan School of Computer and Cognitive Sciences Chukyo University Toyota 470-0393 Japan School of Medicine Department of Urology Kurume University Kurume 830-0011 Japan Faculty of Information Science Chukyo University Graduate School of Information Science Nagoya University Leice IEEE Japanese Society of Biomedical Engineering Japanese Society of Medical Imaging Technology Japan Medical Image Engineering Society Computer-Assisted Diagnostics Society School of Life System Science and Technology IPSJ JSAI JSMEBE JAMIT CADM JSSF IEEE CS Chukyo University Nagoya University Information Processing Society Computer-Assisted Image Diagnostics Society Department of Urology Japanese Urological Association Japan Society of Clinical Oncology Japan Cancer Society Japanese Society of Endourology and ESWL European Urological Association American Urological Association

This paper discusses the virtual prostate needle biopsy system and the construction of the virtual prostate model, considering the actual distribution of prostate abnormalities. A needle biopsy simulation is performed for the constructed virtual prostate, and the actual biopsy procedure in the clinical situation is evaluated. The prostate needle biopsy is a histologic diagnosis procedure in which a sample is acquired from the prostate tissue by needle biopsy and is inspected under a microscope. In order to achieve reliable prostate needle biopsy, it is necessary to consider systematically and numerically the number of needles required, and their locations and insertion angles. For such a purpose, a system is developed in which a virtual prostate is constructed on a computer and the biopsy procedure is evaluated quantitatively by performing virtually the prostate needle biopsy. Furthermore, two different models are constructed, for the prostate with and without hypertrophy, based on the actual statistical distribution data for prostate abnormalities. Each model is partitioned into the peripheral zone and the transition zone. The constructed virtual prostate is input into the virtual needle biopsy simulation system, and three different systematic biopsy procedures actually used at clinical sites, and four different needle biopsy procedures, are experimentally evaluated. The experiments show that the insertion angle that maximizes the hit probability is not always the same as the insertion angle that maximizes cancer sample acquisition. It is evident that the proposed method can indicate a biopsy procedure which realizes a high hit probability with a small number of needles. © 2005 Wiley Periodicals, Inc.

关键词： Biopsy

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A Study on Hybrid Energy Storage system for 42V Automotive Power-net

A Study on Hybrid Energy Storage System for 42V Automotive P...

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IEEE Conference on Vehicle Power and Propulsion (VPPC)

作者： Baek-Haeng Lee Dong-Hyun Shin Byeong-Woo Kim Hee-Jun Kim Byoung-Kuk Lee Chung-Yuen Won Jin Hur Electronics System R&D Center Korea Automotive Technology Institute Chonan ChungNam South Korea Department of Computer Science & Engineering Hanyang University Chonan ChungNam South Korea School of Information and Communication Engineering Sungkyunkwan University Chonan ChungNam South Korea Intelligent Mechatronics Research Center Korea Electronic Technology Institute Chonan ChungNam South Korea

There are lots of attempts in automotive field to supersede mechanical parts with electrical ones owing to increasing needs of drivers' safety, comfort and convenience as well as recent tightened environmental regulation. In addition, continuous improvements of semiconductor technology make it speed up to use electric components instead of conventional mechanical and hydraulic ones. In accordance with these tendencies, the demand of electric power and energy used in vehicle has been increasing steadily, and it will cause overburden of conventional 14 V power generation and distribution system. A research on higher voltage system started in early 1990s and 42 V power system has been introduced for a future automotive power-net. In this paper, technical trend in energy storage system which implies one of the key technologies to implement 42 V power-net is reviewed, and development results of the improved energy storage system consisted of ultracapacitor, battery and management controllers are presented

关键词： Energy storage Automotive engineering Electrical safety Continuous improvement Vehicles Power generation Voltage Power systems Supercapacitors Batteries

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Development of a Sensor system for Outdoor Service Robot

Development of a Sensor System for Outdoor Service Robot

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SICE Annual Conference

作者： Takeshi Nishida Yuji Takemura Yasuhiro Fuchikawa Shuichi Kurogi Shuji Ito Masayuki Obata Norio Hiratsuka Hidekazu Miyagawa Yasuhiro Watanabe Toshinori Suehiro Yoshinori Kawamura Fujio Ohkawa Faculty of Engineering Kyushu Institute of Technology Fukuoka Japan YASKAWA INFORMATION SYSTEMS Corporation Fukuoka Japan Mechanics and Electronics Research Institute Fukuoka Industrial Technology Center Fukuoka Japan Fukuoka Industry Science and Technology Foundation Fukuoka Japan FAIS Robotics Research Institute Fukuoka Japan Faculty of Computer Science and System Engineering Kyushu Institute of Technology Fukuoka Japan

The outdoor service robot, which we call OSR-02, is presently under development intended for cleaning up urban areas by means of collecting discarded trash such as plastic bottles, cans, plastic bags and so on. Additionally, we have developed a novel sensor system for the achievement of the task by this robot; it is constructed with LRF (laser rangefinder), two cameras, and three stepping motors. In this paper, we describe the sensor system and its applications

关键词： Sensor systems Service robots Cameras Robot vision systems Robot sensing systems Robot kinematics computer industry Electronics industry Plastics industry Cleaning

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