An analytic formula for the mean throughput of K-station production lines with no intermediate buffers

Article Abstract:

An approximation method is developed for computing the the average throughput of a K-station production line with exponential service times, manufacturing blocking and no intermediate buffers between adjacent stations. The holding time model method is utilized. The applicability of the method is due to its capacity to handle the case of workstations with different mean processing times. By applying the method to the balanced lines case, a simple formula can be used to provide very good results.

Usage, Production control, Assembly-line methods, Assembly lines, Stochastic approximation

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Two-stage generalized age maintenance of a queue-like production system

Article Abstract:

A two-stage maintenance policy was formulated to address problems related to a production system's preventive maintenance. The policy involves an initial stage that utilizes a production system's technical state to identify a finite interval in which preventive maintenance will be undertaken. The second stage involves determination of the optimal starting time through the use of the production system's operating state.

Operations Research, Maintenance

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Alternate approaches to solving the Holt et al. model and to performing sensitivity analysis

Article Abstract:

Simple and efficient computational algorithms can be used to solve the production and work force smoothing model developed by Holt et al. (1960) and to perform sensitivity analysis. Computation time varies linearly with the number of periods involved in the planning horizon. A framework for sensitivity analysis on the terminal values and for the creation of alternate production plans complements the algorithms.

Research, Labor productivity, Smoothing (Numerical analysis)

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