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ANALYSIS OF THIN PARALLELOGRAM PLATES′BENDING BY SPLINE-FINITE-STRIP METHOD

Applied Mathematics and Mechanics(English Edition) 1984年第6期5卷 1727-1735页

作者：陈铭俊谭国焕张佑啟 Department of Civil Engineering Department of Computer Science Associate Professor Visiting senior Research Assistant University of Hong Kong University of hong Kong Lecturer Professor and Head Zhongshan University

Spline finite strip has been successfully applied in solving right plates and shells by Cheung et al in 1982. In this paper, the method is extended to the analysis of parallelogram plate. This extension still retains the banded nature of the spline finite strip and only small amount of extra computing effort is required. Further-more, the discretisation error of the above method is established theoretically as a general case for the spline finite strip method.

关键词： ANALYSIS OF THIN PARALLELOGRAM PLATES BENDING BY SPLINE-FINITE-STRIP METHOD IO

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Capturing More Meaning in Databases

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Journal of Management Information Systems 1984年第1期1卷 33-49页

作者： Maier, David Associate Professor Department of Computer Science and Engineering Oregon Graduate Center University of Oregon

:Abstract:Users must understand themeaningof a database before they can intelligently interpret the data in it. We explore the problem of making databases selfdescriptive. We first examine the levels of semantics of data by analogy to the area of programming languages. Next, we consider severalsemantic data models, which are formal languages for conceptual data description, and how a semantic description can be linked to the objects in a database. We discuss the advantages of making a semantic description part of a database itself and the types of application programs that would use that description. In particular, we focus onpique, a high-level relational query language that uses such semantic information.

关键词： Data models Database design Information attributes Query languages Names Data types Semantic models

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Teaching database concepts with seed 83

Teaching database concepts with seed

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Proceedings of the fourteenth SIGCSE technical symposium on computer science education

作者： Ronald S. King Associate Professor Computer & Engineering Science Department Baylor University

This paper describes a course in database design taught at Baylor, including a course catalog overview, course outline, related SEED assignments, team oriented term projects, and finally, student reactions to the course.

ISBN: (纸本)9780897910910

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An experiment in microprocessor-based distributed digital simulation 83

An experiment in microprocessor-based distributed digital si...

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Proceedings of the 15th conference on Winter simulation - Volume 1

作者： Dana L. Wyatt Sallie Sheppard Robert E. Young Instructor Dept. of Computer Science Texas A&M University College Station TX Associate Professor Dept. of Computer Science Texas A&M University College Station TX Associate Professor Dept. of Industrial Engineering Texas A&M University College Station TX

This paper discusses the design of a distributed simulation system which will utilize off-the-shelf microprocessors in its implementation. Alternative approaches to the assignment of simulation functions and processes are presented. A project currently underway at Texas A & M University is described which considers the impact of distributed architectures on the design of simulation language support systems. The emphasis in this research project is to produce an operational prototype which can be used to establish the feasibility and utility of distributed simulation.

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SHIPBOARD MAIN BOILER AND FEED PUMP CONTROL-SYSTEM ONLINE ALIGNMENT VERIFICATION

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NAVAL ENGINEERS JOURNAL 1982年第6期94卷 39-46页

作者： BANHAM, JW ADAM, DJ James W. Banham:holds positions both as Director of the Machinery Automation Systems Department of the Naval Ship Systems Engineering Station and as Assistant Chairman of the Mechanical and Industrial Engineering Department of Drexel University's Evening College where he holds the rank of Adjunct Associate Professor. He is the author of a text on Numerical Methods Applications in Engineering. In addition to numerous technical papers he is also the author of the ISA film on Boiler Feedwater Control Systems. A registered professional engineer in the state of Pennsylvania Mr. Banham is co-author of a forthcoming handbook on preparing for the Professional Engineering Examination in mechanical engineering. Mr. Banham holds a bachelor of science degree in mechanical engineering from the Pennsylvania State University his graduate studies were taken at the University of Pennsylvania. He is currently a member of the American Society for Engineering Education and the Instrument Society of America. He served as a member of the ISA Education Committee from 1964 through 1973 and as a member of the ISA Power Plant Dynamics Committee since 1969. His service on the latter committee includes terms as Executive Secretary Vice-Chairman and Chairman. Among other honors Mr. Banham was the winner of the Naval Ship Engineering Center's first Technical Achievement Award (1963) Technical Publication Award (1974) and Equal Employment Opportunity Award (1978). He was also the recipient of Drexel University's Laura S. Campbell Award for Excellence in Teaching (1978). He has taught undergraduate courses in classical control theory numerical methods computer programming systems design and analysis and instrumentation. He also teaches systems theory and computer science in an EIT Review and heat transfer in a PE Review conducted by the Drexel University Department of Continuing Professional Education. Mr. David J. Adam:is a Project Engineer in the Naval Sea Systems Command (PMS301) Steam Propulsion Plant Improvement Program where he i

One of the most serious problems encountered in Naval steam plants following World War II was the unreliable performance of boiler and main feedpump pneumatic control systems. In addition to control component and system design deficiencies, these control systems suffered from inadequate methods to measure and adjust system alignment. This paper describes the development of a set of procedures for on-line alignment verification (OLV) of pneumatic main boiler and feedpump control systems. The procedures are designed for use by N avy control system technicians and, in addition to on-line alignment verification, provide guidance for troubleshooting and for performing system alignment. Procedure static checks measure steady state steaming performance and OLV procedure dynamic checks measure the ability of the boiler and control systems to respond to load changes. The paper describes typical control system characteristics that influence OLV procedure content and the supporting analysis that was used to establish alignment criteria ranges that satisfy both steady state and transient performance requirements. Also described is the alignment criteria tolerance analysis along with the steps involved in a typical OLV check procedure development. Descriptions of the various OLV checks, troubleshooting procedures and alignment procedures are provided. Typical shipboard implementation requirements are described and experience to date with the procedures is provided along with a status report on OLV procedure implementations.

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Acceptance/Rejection Methods for Beta Variate Generation

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Journal of the American Statistical Association 1980年第371期75卷 673-673页

作者： Schmeiser, Bruce W. Shalaby, Mohamed A. Associate Professor School of Industrial Engineering Purdue University West Lafayette IN 47907. Assistant Professor Department of Computer and Management Science Arkansas Technical University Russellville AR 72801

The computer generation of pseudorandom variates from the beta distribution is discussed. Three exact methods applicable for parameter values p > 1 and q > 1 are presented. All three are acceptance/rejection methods, based on functions of the location of the mode and points of inflection. The methods differ in the amount of the set-up required, with higher set-up times generally resulting in lower marginal generation times. Generation times are compared to four methods in current use: ratio of gamma variates, and the methods of Johnk, Ahrens and Dieter, and Cheng. Over a wide range of parameter values marginal generation times are reduced. [ABSTRACT FROM AUTHOR]

关键词： Beta distribution Distribution sampling. Monte Carlo Random variate generation Rejection methods Simulation

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CONVEXIFICATION PROCEDURES AND DECOMPOSITION METHODS FOR NON-CONVEX OPTIMIZATION PROBLEMS

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JOURNAL OF OPTIMIZATION THEORY AND APPLICATIONS 1979年第2期29卷 169-197页

作者： BERTSEKAS, DP Associate Professor Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts

In order for primal-dual methods to be applicable to a constrained minimization problem, it is necessary that restrictive convexity conditions are satisfied. In this paper, we consider a procedure by means of which a nonconvex problem is convexified and transformed into one which can be solved with the aid of primal-dual methods. Under this transformation, separability of the type necessary for application of decomposition algorithms is preserved. This feature extends the range of applicability of such algorithms to nonconvex problems. Relations with multiplier methods are explored with the aid of a local version of the notion of a conjugate convex function.

关键词： Primal-dual methods convexification procedures decomposition methods multiplier methods local convex conjugate functions

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The MACSYMA system for formula manipulation 79

The MACSYMA system for formula manipulation

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Proceedings of the international conference on APL: part 1

作者： J. Moses Professor of Computer Science and Engineering Associate Head Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts

ISBN: (纸本)9781450374408

MACSYMA is a large LISP system which performs symbolic manipulations such as differentiation, simplification, integration and solution of equations with parametric coefficients. After exhibiting various examples of the system, we shall present some of the data representations used by MACSYMA to model abstract algebraic structures such as polynomial *** references are given for those wishing more introductory information about MACSYMA.

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APL and LISP—should they be combined, and if so how? 79

APL and LISP—should they be combined, and if so how?

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Proceedings of the international conference on APL: part 1

作者： William H. Burge Joel Moses Vaughan R. Pratt Alan J. Perlis IBM Thomas J. Watson Research Center Yorktown Heights New York Professor of Computer Science and Engineering Associate Head Department of Electrical Engineering and Computer Science Massachusetts Institute of Technology Cambridge Massachusetts Associate Professor of Computer Science and Engineering Massachusetts Institute of Technology Cambridge Massachusetts Eugene Higgins Professor of Computer Science Chairman Department of Computer Science Yale University New Haven Connecticut

ISBN: (纸本)9781450374408

APL and LISP are very similar languages—both manipulate a complex data structure and the functional structure of the languages has been ideally chosen for convenient manipulation of these structures. Proposals have been made to combine them by embedding one within the other. Another approach is generalization of each into a common superior. This paper will argue that a superior language probably won't work and will then treat the issues by which the proper embedding choice should be *** talk will be followed by a panel discussion about the relationship between APL and LISP.

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Preface [Special issue intro.]

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IEEE Transactions on Pattern Analysis and Machine Intelligence 1979年第2期PAMI-1卷 125-126页

作者： Y. T. Chien Theodosios Pavlidis Guest Editor Professor and Head of the Department of Electrical Engineering and Computer Science. Guest Editor member of the Association for Computing Machinery and Sigma Xi member of the editorial committee of the IEEE TRANSACTIONS OF PATTERN ANALYSIS AND MACHINE INTELLIGENCE Associate Editor of the Bulletin of Mathematical Biology Computer Graphics and Image Processing and Pattern Recognition.

This Special Issue is composed of the papers selected from the 1978 IEEE computer Society Workshop on Pattern Recognition (PR) and Artificial Intelligence (Al) held in Princeton, NJ, April 12-14, 1978. The Workshop was sponsored by the Technical Committee on Machine Intelligence and Pattern Analysis. Inevitably, the contributors to the Workshop determined, to a large degree, the tone and complexion of this Special Issue. For this reason, a brief account of the Workshop Proceedings, though now history, is given. About half of the papers presented at the Workshop were also submitted for the Special Issue, a total of 37. Those of high quality were far more than the number that could be accommodated within the available number of pages. We decided to choose three topics where the interaction between the methodologies of PR and Al was most prevelant: analysis of images, analysis of speech, and certain general algorithms. All the selected papers present either theoretical, or experimental results, or both. We felt that such results clearly demonstrate the progress achieved and can be seen as very impressive if measured against the difficult problem of emulating functions associated with human intelligence by machines. It is true that they often fall short from some of the earlier ambitious goals, but the time is probably ripe to reexamine such goals in view of the accumulated experience. The following is a brief scanning of the contents of this issue, especially as related to the integration and/or interaction of PR and Al methodologies.

关键词： Artificial intelligence Pattern recognition Image analysis Speech analysis Conferences Labeling Machine intelligence Algorithm design and analysis Image edge detection computer Society

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