University of Twente Student Theses


Integrated Resources Planning: A Continuous Approach

Widyari, K.L. (2016) Integrated Resources Planning: A Continuous Approach.

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Abstract:Maintenance logistics is an important area that has been receiving wide attention in scientific literature. Efficient maintenance and logistics can help improve industry's and business' efficiency. In this problem, high availability of resources (spare parts and service engineers) are needed to facilitate corrective maintenance. However, these resources call for high investments since these resources are mostly expensive. This leads to an interest in efficient cost savings; minimizing the cost while still maintaining to meet the resources availability requirement. Therefore, an optimal resource availability in the maintenance logistics is needed. In this master thesis assignment, a service logistics system that involves both spare parts and highly skilled engineers is considered. Highly skilled engineers are considered expensive assets, thus it is necessary to optimally plan the engineers availability. The objective is to determine the required capacity of each resource to minimize the total service costs subject to a specified requirement on resources availability. A constrained optimization model has been the developed for the problem by previous work. In this thesis we formulate the continuous relaxation of the optimization problem. We propose to approach the problem by using logarithmic barrier method. Using this method, we aim to find a good solution on the continuous relaxation problem and improve the performance of the heuristic algorithm from previous work.
Item Type:Essay (Master)
Faculty:EEMCS: Electrical Engineering, Mathematics and Computer Science
Subject:31 mathematics
Programme:Applied Mathematics MSc (60348)
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