Measuring manufacturing flexibility: an empirical investigation

Article Abstract:

A technique for making and quantifying comparative studies of manufacturing plant production flexibilities was developed based on product characteristics and corresponding sums of assigned scores or values. It was shown that the method is viable but requires additional data collection tasks and may not be applicable to other applications at higher than plant levels. The derived measures of flexibility suggest the need for further studies regarding new-product and modification flexibility distinctions and flexibility model verifications.

Evaluation, Testing, Production management, Flexible manufacturing systems

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Sojourn times in a random queue with and without preemption

Article Abstract:

A study was conducted to characterize an equilibrium queue supporting random insertion arrival policies. The queues supported the same queue length distribution and mean sojourn time. The Laplace-Stieltjes transforms of the sojourn time distributions were then determined and verified. Results indicated operational differences between the random selection and random insertion queueing which can be used to analyze system behavior.

Operations Research, Stochastic processes

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An appointment-based service center with guaranteed service

Article Abstract:

A simple model is used to evaluate the economic tradeoffs in the design and control of an appointment-based service center that offers a service guarantee. The model, which is based on recursive procedures, is employed in the steady-state and transient analysis of the system to determine the relationship between the departure interval and the scheduling interval and formulate an optimal scheduling plan that will reduce queue.

Services industry, Service industries

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