Maximizing the effectiveness of a preventive maintenance system: an adaptive modeling approach
Article Abstract:
A method of generating an adaptive preventive maintenance (PM) schedule which maximizes the net savings from PM subject to workforce constraints is proposed. The approach has two components, namely, a task prioritization based on a multi-logit regression model for the PM task types, and task rescheduling based on a binary integer programming model with constraints on single-skilled and multi-skilled workforce availability. The approach modifies the original PM schedule based on historical information on the system's operation and the present workforce availability constraints. Four heuristics developed for the task rescheduling model generate good solutions to large scale versions of the problem, with the best heuristic providing a solution within 1.4% of optimality on average.
Publication Name: Management Science
Subject: Business, general
ISSN: 0025-1909
Year: 1997
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Analysis of profit-linked total-factor productivity measurement models at the firm level
Article Abstract:
Two main-line productivity measurement models are compared. The tested models are the American Productivity Center's (APC) total factor model and Ethyl Corp's 'Profitability = Productivity plus Price Recovery' (PPP) model. The major difference between the models is their treatment of basic accounting figure input data deflation. The APC model uses a period to period deflation method while PPP restates current figures to a base year using a cumulative deflation method. Results indicate that both models produce the same results if the deflating is limited to one item, or if the analysis is limited to multiple items in two consecutive periods.
Publication Name: Management Science
Subject: Business, general
ISSN: 0025-1909
Year: 1989
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Analyzing total factor productivity with ROI as a criterion
Article Abstract:
Total factor productivity measurement at the company level is examined. A way is described for including return-on-investment (ROI) as the improvement criterion in profit-associated total factor productivity measurement methods. Expressions offered here give a method for explaining profit changes associated with productivity performance that is beyond the amount associated with an ROI goal.
Publication Name: Management Science
Subject: Business, general
ISSN: 0025-1909
Year: 1987
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