摘要:

A learning approach is presented to the design of comprehensive production control systems for complex situations. The approach essentially starts from the assumption that defining the production control problem and solving the problem are interdependent processes. Furthermore, the approach explicitly takes into account the fact that in complex situations,a prioriknowledge about the problem situation is Beverly limited especially with respect to organizational circumstances.

ISSN:0020-7543    

DOI:10.1080/00207548108956625

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

The design of information systems is considered for situations where the problem definition is not fixed but. on the contrary, is expected to change. Such a situation requires flexibility in the design of information systems.

ISSN:0020-7543    

DOI:10.1080/00207548108956626

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

An adaptive optimization scheme for economic machining is developed and tested by a series of experiments. The scheme involves actual shop data and optimization techniques based on computer simulation. The computer simulation model is formulated for stages with one, two and three or more sets of shop data. The results show that the method is practical, valid and independent of the initially selected cutting conditions.

ISSN:0020-7543    

DOI:10.1080/00207548108956627

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

This paper reports on a simulation study of hierarchical planning methods, which can be utilized in connection with material requirements planning. The company considered produces one final product having a complex structure. The factory is functionally organized. Two different cases have been studied. In the first case there were both seasonal and independent stochastic variations in demand and in the second case only stochastic variations.

ISSN:0020-7543    

DOI:10.1080/00207548108956628

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

In this paper, the applications of computer simulation and statistically designed experiments are presented as a means to diagnostically evaluate and design more efficient, layouts for manufacturing job-shops. The simulation model is defined and driven based entirely on actual operating data, shop procedures and the physical configuration of the shop. Utilizing the flexibility and realism of a simulation model, layout analysis is conducted to evaluate the effects of changes in material handling methods, in-process storage locations and various operating procedures on shop floor congestion and job throughput. An experimental design is used to allow statistical comparison of the results in the light of the variability of the entire shop system and a predictive model for mean job flow time is developed using multiple regression analysis. The results show than an improved layout and better operating procedures can eliminate the need for additional capital investment and work force expenses, yet still provide improvements in the overall productivity of the shop.

ISSN:0020-7543    

DOI:10.1080/00207548108956629

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

This paper describes an application of line balancing and mixed-model sequencing theory to the assembly of ‘frames’ used in the production of telephone exchanges. The approach used is based on the Dar-El/Cother mixed-model sequencing algorithm, extended to include an additional station lower bound. Preliminary investigations suggest the possibility of reducing the company's present workforce of 160 to 117 operators. A step-by-step description is presented, enabling others to attempt similar applications for the design of mixed-model assembly lines.

ISSN:0020-7543    

DOI:10.1080/00207548108956630

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

For many years difficult combinatorial problems, such as scheduling problems, have been solved by the practitioner with heuristics. We suggest in this paper how to determine for which problems heuristics should be developed and, for a class of these problems, how to develop these procedures naturally. These results are motivated by theoretical results in computer science. The suggestion is numerically tested on a particular single machine scheduling problem.

ISSN:0020-7543    

DOI:10.1080/00207548108956631

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

摘要:

A mathematical model has been developed in this paper for treatment of multistage scheduling with stochastic lead times. The model accounts for the interdependence of successive stages and incorporates the expected costs of both early and late deliveries of raw materials at each stage. Total cost is then minimized through application of an iterative technique to determine optimum lead time for raw materials orders. The optimization procedure also results in the stage cycle times and start-up delays as a part of the minimum expected cost configuration. An example has been solved to illustrate the method.

ISSN:0020-7543    

DOI:10.1080/00207548108956632

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor

ISSN:0020-7543    

DOI:10.1080/00207548108956634

出版商:Taylor & Francis Group    

年代:1981

数据来源: Taylor