摘要:

A direct and simple technique is presented for computing the impulse response of two-dimensional digital filters described by their transfer function. The method is shown to be a direct extension of the technique for computing the impulse response of one-dimensional digital filters. It is easily extended to multi-input/multi-output two-dimensional digital filters. Examples are given to illustrate the various concepts.

ISSN:0020-7721    

DOI:10.1080/00207727908941563

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

This paper describes a new approach to computerized processing of perinatal data, By allowing on-line entry and processing of appropriate medical data for all mothers admitted to the labour rooms and for all newborns delivered, the system is designed to meet, several clinical and technical objectives. Of these, the most important are to provide a reliable and dynamic computer evaluation of risk factors of pregnancy, labour and delivery ; to build a large and continuously updated data base useful for statistical analyses off-line ; and to optimize all phases of data acquisition, processing, storage and retrieval.

ISSN:0020-7721    

DOI:10.1080/00207727908941564

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

A unified account is given of the important canonical forms for multivariable constant linear systems, including block companion forms, and forms due to Luenberger, Brunovsky, Heymann and others. Some new extensions involving block comrade forms arc also presented.

ISSN:0020-7721    

DOI:10.1080/00207727908941565

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

In this paper, two algorithms for solving problems of optimal control of systems described by a general class of ordinary differential equations are presented. For illustration, one of these two algorithms is used to solve a decision making problem in a production firm.

ISSN:0020-7721    

DOI:10.1080/00207727908941566

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

The minimum energy problem for discrete linear admissible control system is solved as a quadratic programming problem for bounded variables. In this method, the optimal solution for the minimum energy problem of the non-admissible system is taken as the initial solution for the present problem. Minimum computer storage is required and no conditions are imposed on the matrix of the constraints. Numerical results indicate that the algorithm is a fast one.

ISSN:0020-7721    

DOI:10.1080/00207727908941567

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor

摘要:

The mathematical framework of special relativity and of general relativity, which involve explicitly the relativistic reference to the observers, should hold also to depict dynamic systems involving human factors. The present paper is focused mainly on the use of special relativity. After a brief resume of the physical features of this theory, we use it to define a general model for general systems, and the Lorentz equations are introduced, which are the nub of the following matter. Applying the model to the concept of class leads directly to the new concept of relativistic fuzzy sets. It is different from that of usual fuzzy sets in the sense that the fuzziness on a set explicitly depends upon the observers, and we have composition laws, with respect to the observers, for the fuzziness functions. The framework of an algebra for relativistic fuzzy sets is given. Applying the relativistic model to random processes gives a new look to the classical prior and posterior probabilities and the illustrative example of a Bayesian pattern recognition system exhibits the genuine meaning of the relativistic probability concept so introduced. Then dynamic systems are described in two stages, the Lorentz stage, and the differential one ; and we so obtain a new model which may take into account some uncertainties which are truly deterministic in nature, like the effect of technology on economic systems for instance. The conclusion outlines the future of the approach.

ISSN:0020-7721    

DOI:10.1080/00207727908941568

出版商:Taylor & Francis Group    

年代:1979

数据来源: Taylor