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The interactive-graphic man-computer dialogue in computer-aided circuit design
implications of this structure for the usual algorithms of nonlinear circuit analysis are studied.
Spence, R and Apperley, M 82.0 'The interactive-graphic man-computer dialogue in computer-aided circuit design' Trans CAS-24 No 2 (Feb 1977) pp 49-61 The crucial role played by the man--computer dialogue in computer-aided circuit design, and particularly within an interactive graphic medium, is demonstrated by reference to a working cicuit design facility implemented on a minicomputer. The detailed nature of this facility and the techniques illustrated are related to the circuit design process and the behavioural characteristics of the human designer. Special attention is given to the command dialogue, and to the introduction of flexibility allowing a user to modify the facility to suit his own needs.
Civil engineering
Steiner, D J and Sandoz, D J 82.1 'Computer*aided design of thin-film optical devices'Proc, lEE Vol 124 No 6 (June 1977) pp 517-5t8 This paper describes a technique for the computer-aided design of optical devices which are structured from multilayer thin films. The design system has been planned to integrate with the requirements of a computer-controlled process for manufacturing optical devices.
Bhandari, N 82.6 'Computer applications in construction management' J. Constr. Div. ASCE, Vol 103 No CO3 Proc. Paper 13209 (September 1977) pp 343-356 This paper discussesthe role of the digital computer in construction management. Applications are cited for the construction phase of a project including logistics and material handling, contract administration and project scheduling, and cost control.
Suryanarayana.Rao, K N, Mahadevan, V and Kosta, S P 82.2 'Analysis of straight tapered microstrip transmission lines - ASTM IC' IEEE Trans. MTT-25 No 2 (Feb 1977) p 164 This paper describes a FORTRAN program to compute the input impedance of straight tapered microstrip transmission line terminated with arbitrary load. Tsai, M K and Shenoi, B A 82.3 'Generation of symbolic network functions using computer software techniques' Trans. CA5-24 No 6 (June 1977) pp 344-346 Software techniques in data structure and special binary properties in computer words have been used for the development of a new computer program called SNAPEST for generating network functions in sy'mbolic form. This new approach is found to save computer memory and time by considerable amounts, when compared to programs well known at present. Some examples are given at the end of this paper to illustrate the advantages and efficiency of this program.
Wang, Y M and Pottle, C 82.4 'Adaptation of circuit-simulation algorithms to a simple parallel microcomputer structure' lEE J. Electron. Circuits Syst. Vol 1 No 1 (Sept 1977) pp 27-32 An inexpensive parallel microcomputer structure is presented as a medium for simulating physical systems modelled by ordinary differentia[ equations, especially large nonlinear circuits. Several of the
volume 10 number 3 may 1978
Zobrist, G W and Bowers, J C 82.5 'A survey of computer-aided design and analysis programs'Proc. Conf. CAD Electron. Microwave Circuits 5yst. Hull (12-14 July 1977) pp 140-145 This paper compares 15 computer-aided design and analysis programs. These programs were originated in the USA and Western Europe; 18 test networks were used for comparison.
Davidson, J W, Felton, L P and Hart, G _CR2.7 'Reliability-based optimization for dynamic loads' J. Struct. Div. ASCE Vol 103 No ST10 Proc. Paper 13297 (October 1977) pp 2021-2035 A general formulation is presented for optimizing the weight of indeterminate structures subject to transient dynamic loads and reliability constraints. Two distinct methods of structural analysis are examined and compared for use in the optimization algorithm: (1) Numerical integration of equations of motion, and (2) shock spectra. Details of the essential computation of standard derivation of response quantities associated with each analysis technique are also examined. Douty, R 82.8 'A general design-oriented interactive language' Proc. Conf. Computers in structural engineering practice Montreal, Canada (6 and 7 October 1977) pp 597-618 A simple syntactical structure for a commandbased design-oriented input language which can be used with most interactive design programs is presented. A sample language which has eight primary commands is described and schemes are suggested by which it can be implemented using most of the higher level computer languages. Three examples are given to demonstrate the utility of the language. Feeser, L J 82.9 'Interactive analysis and design of steel frames using the AISC specification' Comput. Struct. Vol 7 No 1 (February 1977) pp 23-33
This paper describes the integration of a plane-frame analysis program and the American Institute of Steel Construction (AISC) column design program with interactive computer graphics, The program either performs a fully stressed design or allows the user to control the analysisdesign process. Firkins, N t. and Hossack, J Q 83.0 'A command structured approach to structural object plotting and automated line dimensioning' Comput. Struct. Vol 7 No 5 (October 1977) pp 587-598 A comprehensive command-structured plot program which allows the user to generate, position, display and dimension a complex object is presented. With this system, views of the obiect in orthographic or perspective projections are automatically generated and displayed upon commands defined by the engineer. Gallagher, R H 83.1 'Computerized structural analysis and design -the next twenty years' Comput. Struct. Vol 7 No 4 (August 1977) pp 495-501 In this paper, the author reflects on the advances in computerized structural analysis and design over the past 20 years and makes some remarks on the directions in which this field is heading. Several aspects are considered among which are: structural analysis theory, computer hardware, the generalpurpose program of the future, education, and optimal design. Godfrey, K A 83.2 'Making maps by computer' Cir. Engng ASCE Vol 47 No 2 (February 1977) pp 37-45 Three caseshistories at digitizer--comPuter --plotter systems for making maps are presented. They include: a gas utility fo~ keeping track of distribution pipe and building-service lines, a small consultant for making subdivision maps, and a state highway department for mapping 500 miles of highway a year. In all three cases,significant reductions in the cost of making maps have been achieved or are in prospect. Gross, I L, Mutryn, T A and McGuire, W 83.3 'Computer graphics in non-linear design problems' Proc. Conf. Computers in structural engineering practice Montreal, Canada (6 and 7 October 1977) pn 311-340 This paper describes an interactive computer graphics approach to the analysis and design of planar framed structures exhibiting nonlinear structural behaviour. The graphics programs required to input an arbitrary planar structure, monitor the analytical procedure and aid in evaluating the results of an incremental analysis are described. A procedure for generating a colour image of the deflected structure, where the colour indicates the proximity to yield, is also presented.
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Spence, R and Apperley, M 82.0 'The interactive-graphic man-computer dialogue in computer-aided circuit design' Trans CAS-24 No 2 (Feb 1977) pp 49-61 The crucial role played by the man--computer dialogue in computer-aided circuit design, and particularly within an interactive graphic medium, is demonstrated by reference to a working cicuit design facility implemented on a minicomputer. The detailed nature of this facility and the techniques illustrated are related to the circuit design process and the behavioural characteristics of the human designer. Special attention is given to the command dialogue, and to the introduction of flexibility allowing a user to modify the facility to suit his own needs.
Civil engineering
Steiner, D J and Sandoz, D J 82.1 'Computer*aided design of thin-film optical devices'Proc, lEE Vol 124 No 6 (June 1977) pp 517-5t8 This paper describes a technique for the computer-aided design of optical devices which are structured from multilayer thin films. The design system has been planned to integrate with the requirements of a computer-controlled process for manufacturing optical devices.
Bhandari, N 82.6 'Computer applications in construction management' J. Constr. Div. ASCE, Vol 103 No CO3 Proc. Paper 13209 (September 1977) pp 343-356 This paper discussesthe role of the digital computer in construction management. Applications are cited for the construction phase of a project including logistics and material handling, contract administration and project scheduling, and cost control.
Suryanarayana.Rao, K N, Mahadevan, V and Kosta, S P 82.2 'Analysis of straight tapered microstrip transmission lines - ASTM IC' IEEE Trans. MTT-25 No 2 (Feb 1977) p 164 This paper describes a FORTRAN program to compute the input impedance of straight tapered microstrip transmission line terminated with arbitrary load. Tsai, M K and Shenoi, B A 82.3 'Generation of symbolic network functions using computer software techniques' Trans. CA5-24 No 6 (June 1977) pp 344-346 Software techniques in data structure and special binary properties in computer words have been used for the development of a new computer program called SNAPEST for generating network functions in sy'mbolic form. This new approach is found to save computer memory and time by considerable amounts, when compared to programs well known at present. Some examples are given at the end of this paper to illustrate the advantages and efficiency of this program.
Wang, Y M and Pottle, C 82.4 'Adaptation of circuit-simulation algorithms to a simple parallel microcomputer structure' lEE J. Electron. Circuits Syst. Vol 1 No 1 (Sept 1977) pp 27-32 An inexpensive parallel microcomputer structure is presented as a medium for simulating physical systems modelled by ordinary differentia[ equations, especially large nonlinear circuits. Several of the
volume 10 number 3 may 1978
Zobrist, G W and Bowers, J C 82.5 'A survey of computer-aided design and analysis programs'Proc. Conf. CAD Electron. Microwave Circuits 5yst. Hull (12-14 July 1977) pp 140-145 This paper compares 15 computer-aided design and analysis programs. These programs were originated in the USA and Western Europe; 18 test networks were used for comparison.
Davidson, J W, Felton, L P and Hart, G _CR2.7 'Reliability-based optimization for dynamic loads' J. Struct. Div. ASCE Vol 103 No ST10 Proc. Paper 13297 (October 1977) pp 2021-2035 A general formulation is presented for optimizing the weight of indeterminate structures subject to transient dynamic loads and reliability constraints. Two distinct methods of structural analysis are examined and compared for use in the optimization algorithm: (1) Numerical integration of equations of motion, and (2) shock spectra. Details of the essential computation of standard derivation of response quantities associated with each analysis technique are also examined. Douty, R 82.8 'A general design-oriented interactive language' Proc. Conf. Computers in structural engineering practice Montreal, Canada (6 and 7 October 1977) pp 597-618 A simple syntactical structure for a commandbased design-oriented input language which can be used with most interactive design programs is presented. A sample language which has eight primary commands is described and schemes are suggested by which it can be implemented using most of the higher level computer languages. Three examples are given to demonstrate the utility of the language. Feeser, L J 82.9 'Interactive analysis and design of steel frames using the AISC specification' Comput. Struct. Vol 7 No 1 (February 1977) pp 23-33
This paper describes the integration of a plane-frame analysis program and the American Institute of Steel Construction (AISC) column design program with interactive computer graphics, The program either performs a fully stressed design or allows the user to control the analysisdesign process. Firkins, N t. and Hossack, J Q 83.0 'A command structured approach to structural object plotting and automated line dimensioning' Comput. Struct. Vol 7 No 5 (October 1977) pp 587-598 A comprehensive command-structured plot program which allows the user to generate, position, display and dimension a complex object is presented. With this system, views of the obiect in orthographic or perspective projections are automatically generated and displayed upon commands defined by the engineer. Gallagher, R H 83.1 'Computerized structural analysis and design -the next twenty years' Comput. Struct. Vol 7 No 4 (August 1977) pp 495-501 In this paper, the author reflects on the advances in computerized structural analysis and design over the past 20 years and makes some remarks on the directions in which this field is heading. Several aspects are considered among which are: structural analysis theory, computer hardware, the generalpurpose program of the future, education, and optimal design. Godfrey, K A 83.2 'Making maps by computer' Cir. Engng ASCE Vol 47 No 2 (February 1977) pp 37-45 Three caseshistories at digitizer--comPuter --plotter systems for making maps are presented. They include: a gas utility fo~ keeping track of distribution pipe and building-service lines, a small consultant for making subdivision maps, and a state highway department for mapping 500 miles of highway a year. In all three cases,significant reductions in the cost of making maps have been achieved or are in prospect. Gross, I L, Mutryn, T A and McGuire, W 83.3 'Computer graphics in non-linear design problems' Proc. Conf. Computers in structural engineering practice Montreal, Canada (6 and 7 October 1977) pn 311-340 This paper describes an interactive computer graphics approach to the analysis and design of planar framed structures exhibiting nonlinear structural behaviour. The graphics programs required to input an arbitrary planar structure, monitor the analytical procedure and aid in evaluating the results of an incremental analysis are described. A procedure for generating a colour image of the deflected structure, where the colour indicates the proximity to yield, is also presented.
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