In traditional approach, planning and scheduling are two separate and successive operations. The process planning phase is mostly about the physical aspect of planning, where a product range, production quantities, machines, tools, material and accessories are selected. The emphasis in the second, scheduling phase, is on the time aspect. The plan is the basis to determine the sequence of operat...

This paper considers a single-machine scheduling problem where the decision authorities and information are distributed in multiple sub-production systems. Sub-production systems share the single-machine and must cooperate with each other to achieve a global goal of minimizing a linear function of the completion times of the jobs; e.g., total weighted completion times. It is assumed that neithe...

this paper deals with the single machine multi-product lot scheduling problem in which defective items are produced in any production run of each product. we have adopted the common cycle scheduling policy and assumed that the setup times for production of each product can be non-zero. further, we have assumed that defective items will be reworked and the inspection costs during the normal prod...

Abstract In this paper, we propose a new linear programming-based approach that enables the consideration of technical car sequencing rules in master production scheduling mixed-model assembly lines at much higher level detail than previous approaches. To end, investigate certain interdependencies rules, which have largely been neglected, both practice and research literature. We illustrate exi...

In this paper, we study a real-world problem arising from the operations of a hospital service provider, which we term the master physician scheduling problem. It is a tactical planning problem of assigning physician duties to the defined time slots/shifts over a time horizon incorporating a large number of constraints and complex physician preferences. The goals are to satisfy as many physicia...

This paper presents the results of six case studies in two modules, one in the automotive industry and the other in the laptop computer industry. Each module contains a company and two of its suppliers. The objective of the study is to find out the effect of the customer’s power on the supplier’s choice of scheduling practice and response strategy to unexpected schedule changes. Managers in eac...

This paper investigates the impact of freezing the master production schedule (MPS) in multi-item single-level systems with a single resource constraint under demand uncertainty. It also examines the impact of environmental factors on the selection of MPS freezing parameters. A computer model is built to simulate master production scheduling activities in a multi-item system under a rolling tim...

This paper investigates the performance impact of lot-sizing rule (LSR) selection and freezing of the master production schedule (MPS) in multi-item single-level systems with a single resource constraint under deterministic demand. The results of the study show that the selection of LSRs and the parameters for freezing the MPS have a significant impact on total cost, schedule instability, and t...

Master surgical scheduling can improve manageability and efficiency of operating room departments. This approach cyclically executes a master surgical schedule of surgery types. These surgery types need to be constructed with low variability to be efficient. Each surgery type is scheduled based upon its frequency per cycle. Surgery types that cannot be scheduled repetitively are put together in...