摘要:

Consider a realistic unpaced-line problem: there is a set of discrete tasks, whose task-time distributions have diverse shapes. The line designer must (i) decide to which work station to assign each task, and (ii) specify the size of each buffer area in such a way that the configuration has the ‘best’ operating characteristics. This paper describes a decision support package that can efficiently generate the operating characteristics of the many alternative line designs which the line designer may want to try. We also show that the package can be conveniently used to extend earlier results in theoretical unpaced-line research.

ISSN:0020-7543    

DOI:10.1080/00207548608919753

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

In a job shop, the intervals between job arrivals and the job processing times fluctuate and cannot be forecast. When many jobs (customers) arrive at a job shop at the same time, some customers may not place an order because they do not want to wait. To prevent such a situation, the job shop may temporarily increase the process capacity, thereby reducing the waiting time. If its timing is not correct, however, such an increase can also unexpectedly increase the idle time in the process. In this paper, the effects of fluctuations in the quantity of work arriving on waiting time, idle time and the rate of losing customers is studied using numerical calculations which assume extreme fluctuations. These characteristics show different delays in their response to fluctuations in job arrivals. The paper deals with the index and timing for temporarily increasing and decreasing the process capacity to absorb the fluctuations in the quantity of work arriving, that is under what circumstances to do so and when.

ISSN:0020-7543    

DOI:10.1080/00207548608919754

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Priority-scheduling rules and labour-assignment policies are presented for a repair shop which supports a multiple-item repairable-inventory system with a hierarchical product structure. Results from earlier research are extended to machine- and labour-limited environments. Several scheduling rules, combined with two labour-assignment policies and two levels of labour-transfer control, are evaluated using a simulation model. The results indicate that the better priority scheduling rules in the machine-limited situation are also good in the dual-constrained situation. In addition, the better labour-assignment policy is shown to be a function of how often workers are available for reassignment.

ISSN:0020-7543    

DOI:10.1080/00207548608919755

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

The pallet loading problem is addressed in this paper. The focus is on the physical aspects of implementing a pallet loading system. An actual palletizing operation is described for a demonstration system developed using an IBM RS/1 robot. Physical limitations of implementing optimal seeking algorithms are addressed.

ISSN:0020-7543    

DOI:10.1080/00207548608919756

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

Given the dynamic finished good requirements, a model is presented to derive the optimal levels of inventory, backlogging, and machine loading in a multi-stage, multi-period production environment characterized by non-identical machines in each stage. Dynamic capacity constraints on the level of inventory, backlogging, and machine loading are included. Furthermore, capacities and operating costs of machines performing the same tasks at any stage in the production process are permitted to vary in order to consider the individual characteristics of machines. Therefore, machine loads are obtained for non-identical machines capable of performing the same operations. The model is represented as a capacitated network with linear costs and is quickly solved using a standard network code.

ISSN:0020-7543    

DOI:10.1080/00207548608919757

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

摘要:

This paper estimates the potential market for robotic assembly. The potential market is defined in terms of: (i) the percentage of assembly: (ii) the number of displaced workers and (iii) the number of installed robots, where robots are a lower-cost method than conventional techniques (hard automatic and manual). It also estimates the effects of developments in visual sensing for part recognition, tactile sensing for flexible grippers and reduced control engineering costs (software) on the economics and potential market for robotic assembly. Though the primary concern is to estimate future, as opposed to existing, costs of robotic assembly, many of the cost estimates are based on systems that are currently available. The paper has implications for product and research and development planning in industry, universities and federal research and development programmes.

ISSN:0020-7543    

DOI:10.1080/00207548608919758

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

ISSN:0020-7543    

DOI:10.1080/00207548608928117

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

ISSN:0020-7543    

DOI:10.1080/00207548608928121

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor

ISSN:0020-7543    

DOI:10.1080/00207548608928123

出版商:Taylor & Francis Group    

年代:1986

数据来源: Taylor