检索结果-内蒙古大学图书馆

IEEE International Symposium on Electromagnetic Compatibility (EMC)

作者： K. Ichikawa T. Unou T. Tsuda Y. Mabuchi M. Nagata Graduate School of Science and Technology Kobe University Kobe Japan Vehicle Integrated System R & D Dept. DENSO CORPORATION Kariya Japan Department of Computer and Systems Engineering Kobe University Kobe Japan Hitachi Research Laboratory Hitachi Ltd. Ibaraki Japan

来源：评论

学校读者我要写书评

暂无评论

Hemodynamic Responses during Simulated Automobile Driving in a Monotonous Situation

Hemodynamic Responses during Simulated Automobile Driving in...

引用

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

作者： T. Yamakoshi K. Yamakoshi S. Tanaka M. Nogawa Y. Sawada P. Rolfe Graduate School of Natural Science & Technology Kanazawa University Kanazawa Japan Institute of Nature and Environmental Technology Kanazawa University Kanazawa Japan Department of Human and Mechanical Systems Engineering Kanazawa University Kanazawa Japan Faculty of Medicine Sapporo Medical University Sapporo Japan Department of Communication Computer & System Science University of Geneva Genoa Italy

Long hours of automobile driving under monotonous situations may cause the lowering of what we term a driver's activation state (DAS) or in other words the production of drowsiness, resulting in an increased risk of a traffic accident. There is therefore a need to create a newly advanced system focused on the DAS in-car, hopefully thus avoiding potentially dangerous situations. In order to develop such a system as a final goal, we have firstly set out to acquire such cardiovascular variables as beat-by-beat blood pressure (BP), RR interval from ECG and normalized pulse volume (NPV) used as a peripheral vascular tone of alpha-adrenergic sympathetic activity, during presentation to the driver of a screen movie simulating monotonous travel at constant speed on a test-course. Subsequently, we have investigated the reactivity in terms of the driver's cardiovascular hemodynamics. Through the successful monitoring of cardiovascular parameters during the movie presentation obtained in 11 healthy male subjects, the following results were obtained: The monotonous driving produces a statistically significant gradual rise in BP following drowsiness, which could be explained by enhancement of sympathetic activity using a time-frequency analysis of BP and RR. This finding strongly indicates that continuous driving in such monotonous situations can make a driver considerably stressful and thus may cause a gradual increase in BP, and that this gradual BP increase may be used as a possible index relevant to the DAS. This finding was also confirmed by the analysis of NPV, suggesting that the gradual increase in BP during the monotonous driving would be rather caused by a regulation of peripheral vasomotor constriction

关键词： Hemodynamics Automobiles Cardiology Motion pictures Production Road accidents Blood pressure Biomedical monitoring Electrocardiography system testing

来源：评论

学校读者我要写书评

暂无评论

A web-based integrated education system for a seamless environment among teachers, students, and administrators

引用

systems and computers in Japan 2006年第5期37卷 14-24页

作者： Hanakawa, Noriko Akazawa, Yoshiko Mori, Akira Maeda, Toshiyuki Inoue, Shunji Tsutsui, Shigeyoshi Faculty of Management Information Hannan University Matsubara 580-8502 Japan System Engineering Division Solutions and Services Educational Solutions Group Fujitsu Limited Tokyo 105-7123 Japan Research Center for Computer Science Hannan University Matsubara 580-8502 Japan Faculty of Management Information Hannan University Corporate Information Graduate School Information Processing Society of Japan IEEE System Engineering Division Solutions and Services Educational Solutions Group Research Center for Computer Science Faculty of Management Information Hannan University Institute of Electrical Engineers of Japan Japanese Society for Artificial Intelligence Japan Fuzzy Knowledge and Information Society Institute of Systems Control and Information Engineers

The authors created a Web-based integrated education support system that unified the data in the administrative system and the education system in a university. The purpose of the system was to make the administrative system and education system data that had previously been separated seamless, and to implement seamless access from inside and outside the university while maintaining security. Moreover, the authors emphasized the development of a portal site as a point of contact for the system. As a result of using software packages and existing technology for the other servers and databases, and making a policy of not changing the administrative system at all, the authors were able to create the system in a short period of 5 months. After the system was operational, preparation and review for class could be done at home, and evaluations of reports and final determinations of grades could be done from outside the university. This confirmed that the education system was effective. Finally, the authors looked at the trouble and performance problems that occurred involving local rules in the business department during operation, as well as countermeasures for them. © 2006 Wiley Periodicals, Inc.

关键词： Learning systems

来源：评论

学校读者我要写书评

暂无评论

Local Learning and Search in Memetic Algorithms

Local Learning and Search in Memetic Algorithms

引用

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

来源：评论

学校读者我要写书评

暂无评论

Implementation and Sensorless Vector-Control Design and Tuning Strategy for SMPM Machines in Fan-Type Applications

Implementation and Sensorless Vector-Control Design and Tuni...

引用

Conference Record of the IEEE Industry Applications Society Annual Meeting (IAS)

作者： Parag Kshirsagar Rolando P Burgos Alessandro Lidozzi Jihoon Jang Fred Wang Dushan Boroyevich Seung-ki Sul The Bradley Department of Electrical and Computer Engineering Virginia Polytechnic Institute and State University Blacksburg Blacksburg VA USA ROMA TRE University Department of Mechanical and Industrial Engineering Via della Vasca Navale 79 00146 Rome Italy. lidozzi@ing.uniroma3.it HEV System Engineering Team Hyundai Motor Company Gyeonggi-Do Korea School of Electrical Engineering & Computer Science Seoul National University Seoul 151-744 Korea. sulsk@plaza.snu.ac.kr

This paper presents a complete design methodology for the sensorless vector control of permanent magnet synchronous machine (PMSM) motor drives in fan-type applications. The proposed strategy is built over a linear asymptotic state observer used to estimate the PMSM back-EMF, and a novel tracking controller based on a phase-locked loop (PLL) system, which by synchronizing the estimated and actual d-q frames estimates the rotor speed and position. The paper presents the complete derivation of all associated control-loops, namely state observer, tracking controller, d-q axes current regulator, speed controller, an anti-saturation control loop - which provides inherent operation in the flux-weakening region, and all corresponding anti-windup loops. Detailed design rules are provided for each of these loops, respectively verified through time-domain simulations, frequency-response analysis, and experimental results using a 300 Vdc 3.5 kW PMSM PWM motor-drive, validating both the design methodology and the excellent performance attained by the proposed control strategy

关键词： Phase estimation State estimation Design methodology Observers Tracking loops Phase locked loops Pulse width modulation Machine vector control Permanent magnet machines Motor drives

来源：评论

学校读者我要写书评

暂无评论

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

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

引用

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

来源：评论

学校读者我要写书评

暂无评论

Studies on the inverse estimation of the heat flux or heat transfer coefficient in composite materials

引用

Hangkong Taikong ji Minhang Xuekan/Journal of Aeronautics, Astronautics and Aviation 2006年第2期38 B卷 97-108页

作者： Cheng, Chung-Hsin Chen, Tsung-Chien Tuan, Pan-Chio Jang, Horng-Yuan Department of System Engineering Chung Cheng Institute of Technology National Defense University Taoyuan Taiwan Graduate School of Gerontic Technology and Service Nankai College Nantou Taiwan Department of Computer Science Information Engineering Nankai College Nantou Taiwan

The one dimensional inverse heat conduction problems of the composite materials with the unknown boundary conditions are discussed. Base on the boundary temperature measurement, the system's unknown boundary conditions such as the time varying heat flux or heat transfer coefficient can be estimated by input estimation (IE) approach inversely and the transient response of the temperature of the composite materials is calculated at the same time. The IE includes Kalman filter (KF) and weighted recursive least-square estimator (WRLSE). The unknown boundary conditions are regarded as the unknown inputs. Kalman filter (KF) is linear recursive least square error covariance estimation and its purpose is to generate the recursive innovation sequence. Because this sequence contains bias or systematic errors caused by implicit unknown time-variant inputs and random errors from the measurement data. WRLSE is used to identify the unknown inputs. The methodology for estimating the time varying unknown heat flux, heat transfer coefficient and temperature distribution of the composite materials is also presented in this work. The simulation results show that the proposed algorithm can accurately estimate the unknown heat flux, heat transfer coefficient and the temperature transient response of the composite materials.

关键词： Composite materials

来源：评论

学校读者我要写书评

暂无评论

Tianwang search engine at TREC 2005: Terabyte track

Tianwang search engine at TREC 2005: Terabyte track

引用

14th Text REtrieval Conference, TREC 2005

作者： Yan, Hongfei Li, Jingjing Zhu, Jiaji Peng, Bo Network and Distribution System Laboratory School of Electronic Engineering and Computer Science Peking University Beijing 100871 China

Tianwang for the first time participated in all three tasks of the Terabyte Track of TREC 2005 to explore its performance. All three tasks, including the adhoc task (find all the relevant documents with high precision), the efficiency task (find top- 20 results for each of 50k-entry queries with efficiency and scalability) and the named page finding task (sometimes search a page by name), are based on a 426GB collection of 25.2 million pages taken from the .gov Web domain ("GOV2"). In the adhoc task with 50 topics, Tianwang returned at least one relevant document in top 10 for 42 topics. In the efficiency task, Tianwang returned at least one relevant document in top 20 for 44 of the 50 quires. In the named page task with 252 topics, Tianwang returned a desired page in top 10 for 99 topics;meanwhile, it failed to find a correct one for 120 topics.

关键词： Search engines

来源：评论

学校读者我要写书评

暂无评论

Corrigendum to “SNMP information based routing mechanism for fast handoff in mobile IP” [computer Communications 28 (2005) 1887–1902]

引用

computer Communications 2006年第12期29卷 2446-2446页

作者： Sang-Hoon Ryu Soo-Hyun Park Doo-Kwon Baik Software System Laboratory Department of Computer Science & Engineering Korea University 5 Anam-dong Sungbuk-ku Seoul 136-701 Republic of Korea School of Business IT Kookmin University 861-1 Jeungreung-dong Songbuk-ku Seoul 136-702 Republic of Korea

来源：评论

学校读者我要写书评

暂无评论

Abstracts from the 6th International Conference on the engineering of Sport, 10-14 July 2006, Olympic Hall, Munich, Germany Abstracts

引用

SPORTS engineering 2006年第2期9卷 107-127页

作者： [Anonymous] University of Massachusetts Lowell USA Science & Mathematics Department Kettering University Flint USA University of Illinois USA Western Michigan University USA Washington State University USA Casecade Engine USA Kanazawa University Japan Sumitomo Light Metal Japan Massachusetts Institute of Technology USA Nanyang Technological University Bioengineering Singapore University of Vienna Anthropology Austria Department of Mechanical Engineering University of Bath UK INSA Lyon France PETZL France Sports Materials Research Group University of Birmingham UK Laboratoire de Modélisation des Activités Sportives Bourget du Lac France Technical University Kaiserslautern Germany Department of Engineering Mechanics United States Air Force Academy Colorado Springs USA SRAM Corporation Colorado Springs USA Sports Engineering Research Group University of Sheffield UK Sports Engineering CSES Sheffield Hallam University USA Sports Engineering CSES Sheffield Hallam University UK Technische Universität München Germany Rush University Medical Center Chicago USA Faculty of Sports Science Department of Sport Equipment & Materials TU München Germany RMIT University Australia Institute of Health and Sports Sciences University of Tsukuba Ibaraki Japan Machine and Control Department Polytechnic University Kanagawa Japan SRI Sports Ltd. Hyogo Japan SRI Research and Development Ltd. Hyogo Japan Mizuno Corporation Osaka Japan Fukuoka Institute of Technology Fukuoka Japan University of Limerick Éire Graduate School of Engineering Hokkaido University Japan Faculty of Engineering Kitami Institute of Technology Japan University of Calgary Canada TaylorMade-adidas Golf Company USA Davis Mechanical Engineering University of California USA Davis Mechanical & Aeronautical Engineering University of California USA University of Wales Institute Cardiff Cardiff School of Sport UWIC Cardiff Cardiff School of Sport UWIC Wales Loughborough University UK Cranfield University UK Cr

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：