Benchmarks for basic scheduling problems

Article Abstract:

Two hundred and sixty randomly generated unsolved scheduling problems, with sizes corresponding to actual industrial problems. These problems include permutation flow shop, job shop and open shop shceduling problems. These are limited by fixed processing times and the absence of set-up times, due dates or release dates. A problem is chosen if the best makespan found is distant from the lower bounds of the makespans and if attempts at solving the problem yields dissimilar solutions.

Benchmarks, Benchmarking, Combinatorial optimization

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Minimum loss scheduling problems

Article Abstract:

Two minimum loss scheduling problems are analyzed by utilizing specific arrival epochs and processing times of consecutive tasks. One problem is concerned with a situation where the jobs can be processed by a given number of parallel nonidentical machines with no waiting room while the other problem deals with a single unit with a specific period allowed for waiting. An algorithm is used to find the optimal point for the minimization of loss scheduling problems.

Systems analysis

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A new bounding mechanism for the CNC machine scheduling problems with controllable processing times

Article Abstract:

A study conducted to find a set of efficient points for a bicriteria problem on a single CNC machine for minimizing the manufacturing cost and minimizing the makespan, by determining processing times under controllable conditions is presented. The results of the study demonstrate how the process planning and scheduling decisions can be integrated.

Metalworking Machinery, Metalworking Machinery Manufacturing, Relay and Industrial Control Manufacturing, Relays and industrial controls, N/C Machine Tools, N/C Machine Tool Controls, Machine-tools, Numerically controlled machine tools, Production planning

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