检索结果-内蒙古大学图书馆

INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS 1993年第4期6卷 299-304页

作者： TAN, CC FUSCO, VF The Queen's University of Belfast Department of Electrical & Electronic Engineering Ashby Building Stranmillis Road Belfast BT9 5AH U.K. Chun Chia Tan obtained a first-class honours degree from The Queen's University of Belfast. He was awarded an IEE prize for best final-year project. His current research interests include the modelling of electromagnetic fields using parallel processing techniques. At present Mr Tan is working as an electrical engineer in Malaysia. Vincent F. Fusco was educated at The Queen's University of Belfast where he obtained the degree of Ph.D. He has worked as a research engineer on short-range radar and radio telementry systems. Currently he is a Reader in Microwave Commnications in the School of Electrical Engineering and Computer Science The Queen's Univeristy of Belfast. His current research interests include non-linear microwave circuit simulation and concurrent programming techniques for electromagnetic field problems. He has acted as consultant to a number of major companies and has published numerous research papers in these areas. He is author of the bookMicrowave Circuits Analysis and Computer Aided Design(Prentice Hall 1987). Dr Fusco is a Chartered Electrical Engineer and a Member of the Institute of Electrical Engineers.

A major limitation of the transmission-line matrix (TLM) method used to solve Maxwell's equations is the long computation time required. The TLM scattering calculations involved can, however, be viewed as parallel in nature. This paper describes an effort to reduce computational time by using an SIMD, DAP multiprocessor computer employed to solve a two-dimensional TLM electromagnetic field formulation. A parallel algorithm based on the TLM scattering algorithm is designed and implemented using FORTRAN-PLUS Enhanced on an AMT DAP 510 machine. Here the connectivity of the DAP is exploited to simulate the intrinsic scattering behaviour on which the TLM algorithm relies. The results show that parallel processing on an SIMD machine such as the DAP is advantageous, especially for higher-order mesh sizes.

关键词： Electric lines

来源：评论

学校读者我要写书评

暂无评论

Studies Regarding the Alternate Simulation Techniques for Machine Toolsand Industrial Robots

引用

PAMM 2004年第1期4卷

作者： A. Pisla D. Pisla Department for Machine Tools and Industrial Robots TU Cluj-Napoca C. Daicoviciu Str. 15 RO-400020 Cluj-Napoca Romania Department for Mechanics and Computer Programming TU Cluj-Napoca C. Daicoviciu Str. 15 RO-400020 Cluj-Napoca Romania Phone: +00 40 264 401684 Fax: +00 40 264 415676

In the paper are presented results regarding the design, simulation and testing of some robotized structures with parallel kinematics in order to identify appropriate simulation techniques and to reveal the properties of particular studied characteristics. The paper is structured in three parts: introduction regarding the tasks of the simulations techniques and the developed applications, comparison of the results obtained in simulations, considering the working space modelling accuracy and the speed of workspace identification and the last part conclusions. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

关键词：

来源：评论

学校读者我要写书评

暂无评论

The Relationships between the Shape of the Workspace and GeometricalDimensions of Parallel Manipulators

引用

PAMM 2004年第1期4卷

作者： D. Pisla A. Pisla Department for Mechanics and Computer Programming TU Cluj-Napoca C. Daicoviciu Str. 15 RO-400020 Cluj-Napoca Romania Department for Machine Tools and Industrial Robots TU Cluj-Napoca C. Daicoviciu Str. 15 RO-400020 Cluj-Napoca Romania Phone: +00 40 264 401684 Fax: +00 40 264 415676

In this paper, a new simulation program for the workspace analysis of parallel robots is presented. The system consists of modules, which enable a complex study of the parallel structures. A special method for generating the workspace of the parallel structures is used. The simulation program offers the possibility to generate automatically the virtual model of the parallel robot using the facilities of a 3D modeling software. The structure geometric parameters, which could be modified within the modeling software, influence the simulation environment. These facilities enable to establish the relationships between the workspace shape, elements links and geometrical parameters of the structure. (© 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

关键词：

来源：评论

学校读者我要写书评

暂无评论

Prevention of Japanese encephalitis with different control strategies considering environmental effects: A mathematical study

引用

AIP Conference Proceedings 2023年第1期2718卷

作者： K. Barman K. Maity R. N. Giri A. De Department of Mathematics Prabhat Kumar College Contai Purba Medinipur - 721404 West Bengal India Department of Mathematics Mugberia Gangadhar Mahavidyalaya Bhupatinagar Purba Medinipur-721425 W.B. India Department of Applied Mathematics with Oceonology and Computer Programming Vidyasagar University Midnapore 721102 India Department of Applied Sciences Haldia Institute of Technology Purba Medinipur - 721657 West Bengal India

Japanese encephalitis (JE), a public health problem for the entire world, is caused by a virus called Japanese encephalitis virus (JEV) which is spread by mosquitoes. According to WHO’s report, nearly 68000 clinical cases of JE are reported globally each year and approximately 13600 to 20400 are deaths. Here, a mathematical model of JE is formulated considering different control measures such as vaccination, treatment, insecticide and efforts to reduce environmental discharges. An explicit expression of basic reproduction number is formulated and the stability of disease-free and endemic equilibrium of the system is analyzed. In this paper, we have formulated an optimal control problem and analyzed different strategies considering the minimum cost for applying such strategies. We have investigated the results of fixed control for endemic equilibrium both numerically and graphically. We have solved the optimal problem numerically when control parameters are time-dependent by applying Runge-Kutta 4th order forward and backward method and presented graphically. In our present work, we discussed the best cost-effective control strategy to prevent Japanese encephalitis when we consider environmental discharges have a positive impact on the breeding of mosquitoes and the growth of the pig population.

关键词：

来源：评论

学校读者我要写书评

暂无评论

The relationship between perceived stress and emotional eating in bus drivers: the effect of shift work

引用

Journal of Plant Foods 2024年第7期75卷

作者： Emre Bayraktaroglu Hilal Hizli-Guldemir Serkan Eti Merve Kayali-Sevim Neda Saleki a Department of Nutrition and Dietetics Istanbul Medipol University College of Health Sciences Istanbul Turkey b Department of Nutrition and Dietetics Faculty of Health Sciences Anadolu University Eskisehir Turkey c Department of Computer Programming Istanbul Medipol University IMU Vocational School Istanbul Turkey d General Directorate of IETT Enterprises Istanbul Turkey e Department of Nutrition and Dietetics Faculty of Health Sciences Istanbul Medipol University Istanbul Turkey

This study discusses the relationship between perceived stress and emotional eating based on shiftwork in city bus drivers. It was conducted with 1403 male city bus drivers working in Istanbul. Questions about the drivers’ physical activity and dietary habits, the Healthy Diet Index (HDI), Emotional Appetite Questionnaire and Perceived Stress Scale-10 data were collected and evaluated in two groups: shift and non-shift employees. It was found that the shift workers (SWs) have lower perceived stress, physical activity, HDI and positive emotional appetite averages. In addition, for SWs, a positive correlation was found between negative emotional appetite scores and physical activity and HDI scores. In conclusion, the drivers working in shifts were found to be slightly overweight and had lower physical activity levels, had lower HDI scores, and their nutritional status was more negatively impacted than their counterparts.

关键词： Driver perceived stress Healthy Diet Index shiftwork

来源：评论

学校读者我要写书评

暂无评论

computers in behavioral science on a computer program that generates and queries kinship structures

引用

Behavioral Science 1969年第4期14卷

作者： Nicholas V. Findler Wiley R. McKinzie Department of Computer Science State University of New York at Buffalo The programming part was done exclusively by W. R. McK. while the writing up of this paper represents a joint effort between the two authors. In its original form the work was a term project of W. R. McK. for a course on List Processing Techniques given by N. V. F.

The present work is an exercise to generate complex, inter-related data structures from the simplest possible information source. The organization of the memory is such that updating and retrieval processes are easy to perform. To demonstrate the capabilities of the program, the first fifteen chapters of Robert Graves: The Greek Myths , Volume I were used as data source. One of the interesting results is that, in spite of the rather free mating pattern of the divine participants, Zeus and Aphrodite adhered to a Platonic relationship. Another is that Rhea is Cronus' sister, wife, grand-aunt and daughter-in-law's mother at the same time. The program, written in IPL-V in its present form, can accept a maximum of 500 separate individuals and will process an unlimited number of inquiries in one particular run. Non- perfect information is appropriately treated. Finally, possible extensions are briefly described.

关键词：

来源：评论

学校读者我要写书评

暂无评论

RATIONALE FOR AN ADA SOFTWARE ENGINEERING ENVIRONMENT FOR NAVY MISSION CRITICAL APPLICATIONS

引用

NAVAL ENGINEERS JOURNAL 1984年第4期96卷 133-145页

作者： PAIGE, KK CONVERSE, RA USN LCdr. Kathleen K. Paige USN:graduated with a BA from the University of New Hampshire in 1970. She received her commission from Officer Candidate School in April 1971 and performed her first tour of duty with VFP-63 NAS Miramar. LCdr. Paige then received her MS from the Naval Post Graduate School in June 1976 and returned to San Diego to serve as Head Support Software Division at the Fleet Combat Direction System Support Activity. In May 1981 she reported to NA VSEA (PMS-408) where she served initially as Chairman of the NAVMAT Software Engineering Environment Working Group. She has been assigned as Deputy AN/UYK-43 Acquisition Manager since October 1981. LCdr. Paige was designated a fully qualified Engineering Duty Officer in December 1983. Robert A. Converse:is presently the Acquisition Manager for the Ada Language System/Navy (ALS/N) for the Naval Sea Systems Command Tactical Embedded Computer Resources Project. As such he is responsible for the definition and development of the ALS/N to be provided as a Navy standard computer programming system for Navy mission critical applications. Mr. Converse received a Bachelor of Science degree in Physics from Wheaton College Wheaton II. He spent fourteen years with the Naval Underwater Systems Center Newport Rhode Island during which time he designed and developed the Fortran compiler for the Navy Standard AN/UYK-7 computer. Also during that period he received a Master of Science degree in Computer Science from the University of Rhode Island. His thesis for that degree was entitled “Optimization Techniques for the NUSC Fortran Cross-Compiler”. Mr. Converse started his involvement with the Ada program in 1975 with the initial “Strawman” requirements review. Subsequently he was named as the Navy Ada Distinguished Reviewer and was intimately involved in the selection and refinement of the Ada language as it evolved to become ANSI/MIL-STD-1815A.

The U.S. Navy introduced the use of digital computers in mission critical applications over a quarter of a century ago. Today, virtually every system in the current and planned Navy inventory makes extensive use of computer technology. computers embedded in mission critical Navy systems are integral to our strategic and tactical defense capabilities. Thus, the military power of the U.S. Navy is inextricably tied to the use of programmable digital computers. The computer program is the essential element that embodies the system “intelligence”. In addition, it provides the flexibility to respond to changing threats and requirements. However, this very flexibility and capability poses a host of difficulties hindering full realization of the advantages. This paper describes the lessons learned about computer program development over the past twenty five years and discusses a software engineering process that addresses these lessons. It then describes how Ada and its related Ada programming Support and Run-Time Environments foster this software engineering process to improve computer program productivity and achieve greater system reliability and adaptibility. Finally, the paper discusses how the use of Ada and its environments can enhance the interoperability and transferability of computer programs among Navy projects and significantly reduce overall life cycle costs for Navy mission critical computer programs.

关键词：

来源：评论

学校读者我要写书评

暂无评论

INNOVATIONS IN computer-AIDED-DESIGN OF MARINE TURBINES USING INTERACTIVE GRAPHICS

引用

NAVAL ENGINEERS JOURNAL 1980年第2期92卷 207-217页

作者： GINGRICH, JK WINTER, RL Mr. John K. Gingrich joined the General Electric Company after his graduation from Lafayette College in 1948. His early assignments were with the General Engineering Laboratory and the Knolls Atomic Power Laboratory in Schenectady. N. Y. He joined the Marine Turbine and Gear Department in 1968 as Manager Engineering Administration. and assumed his present assignment as Manager Engineering Resource Planning & Administration in 1976. Mr. Gingrich was instrumental in procuring the Interactive Graphics System for the Medium Steam Department. having headed up the Study Team and is now responsible for the Interactive Graphics Systems management including new procurements. He is a member of the American Institute of Design Drafting and is currently the Chairman of the Computer-Aided Drafting Committee in that organization. Mr. Reinhold L. Winter is a graduate of the General Electric Apprentice Program and Salem State College from which he received his B.S. degree in Business Administration. He has nineteen years experience with the General Electric Company including eight years in Business Systems and Programming two years in Computer Operations Management and six years in his present position as Manager Engineering Business Systems. He was a member of the original Study Team that investigated and selected the present Applicon Interactive Graphics (IAG) equipment and currently is responsible for the management of software and hardware support for the ZAG Facility.

This paper discusses the Interactive Graphics System used by the General Electric Company, Medium Steam Turbine Department (Engineering & Manufacturing) for designing, drafting, and manufacturing applications. A brief overview of the hardware malting up the system is described, followed by a more detailed description of the actual applications. Two-dimensional applications described include a Heat Balance Analysis, Flow Diagrams, and Electrical Schematics. A more fruitful area for increased productivity gains is described in the three-dimensional or mechanical applications including turbine design & layout and bucket design. coordination of the design with manufacturing for numerical control tape generation is described through CAM and Plate Frame Cutting applications. Finally, a short review of the engineering design work using Interactive Graphics is discussed. Productivity gains of 2.6 to 1 are being realized, and the overall savings to the Medium Steam Department are outlined.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Preface

Communications in Computer and Information Science

引用

Communications in computer and Information Science 2019年 1007卷 V-VIII页

作者： Ermolayev, Vadim Suárez-Figueroa, Mari Carmen Yakovyna, Vitaliy Mayr, Heinrich C. Nikitchenko, Mykola Spivakovsky, Aleksander Zaporizhzhya National University Zaporizhzhia Ukraine Universidad Politecnica de Madrid Boadilla del MonteMadrid Spain Lviv Polytechnic National University Lviv Ukraine Faculty of Mathematics and Computer Science University of Warmia and Mazury in Olsztyn Olsztyn Poland Institute of Applied Informatics Alpen-Adria-Universität Klagenfurt Klagenfurt Austria Department of Theory and Technology of Programming Taras Shevchenko National University of Kyiv Kyiv Ukraine Kherson State University Kherson Ukraine

来源：评论

学校读者我要写书评

暂无评论

New development of parallel robots and microrobots with three, four and five degrees of freedom

引用

PAMM 2008年第1期7卷

作者： N. Plitea A. Vidrean D. Pisla A. Pisla C. Vaida Department for Mechanics and Computer Programming TU Cluj-Napoca C. Daicoviciu Str. 15 RO-400020 Cluj-Napoca Romania Phone: +00 40 264 401684 Fax: +00 40 264 415676 Department for Machine-Tools and Industrial Robots TU Cluj-Napoca C. Daicoviciu Str. 15 RO-400020 Cluj-Napoca Romania Phone: +00 40 264 401762 Fax: +00 40 264 430461

All over the world it can be noticed that product miniaturisation is a central theme in product development for different application areas. In robotics scientific research, one of the most important approaches is concerning the increase of the positioning accuracy by the use of parallel structures [3], [4], [5]. In this paper some variants of parallel robots and micro-robots with three, four and five degrees of freedom are presented, which are used for manipulation within high precision assembling processes. The corresponding kinematic models have been developed. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

关键词：

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：