The scheduling problem where multiple machines compete for a common local buffer

Article Abstract:

The single-buffer scheduling problem for a two-stage job shop was examined. The problem, which pertains to the minimization of the sum of weighted completion times of an arbitrary set of jobs, involved the use of a common buffer between the multi-machine first stage and single-machine second stage of operations. A Lagrangian and a combined Lagrangian surrogate relaxation were carried out to derive two lower bounds to the problem and facilitate its solution via four priority rule-based heuristics.

Production management, Scheduling (Management), Machine shops

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The multi-item single period problem with an initial stock of convertible units

Article Abstract:

Research is presented concerning the development of efficient solution procedures for the resolution of situations involving end items which are subject to uncertain demand. Computations for 2 situations are discussed.

Operations Research, Purchasing, Business enterprises, Inventory control, Nonparametric statistics

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The effects of inflation and time-value of money on an economic order quantity model with a random product life cycle

Article Abstract:

Research is presented into the impact of inflation and time-value of money on an economic order quantity model incorporating a random product life cycle.

Product life cycle

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