A new resource buffer insertion approach for proactive resource investment problem

Autor: Nasim Nahavandi, Mohammad Shariatmadari
Rok vydání: 2020
Předmět:
Zdroj: Computers & Industrial Engineering. 146:106582
ISSN: 0360-8352
DOI: 10.1016/j.cie.2020.106582
Popis: The majority of research has concentrated on the creation of robust schedules to manage the uncertainties and disruptions that called pro-active scheduling. Different from previous research on pro-active scheduling, this paper investigates robustness enhancement of an existing schedule using inserting resource buffers instead of creating robust schedule. The present study aims to present an algorithm for robustness enhancement of schedules through resource buffer insertion during the planning horizon in which the availability of resources varies with time and the uncertainty is in the required renewable resources for activities. Since surrogate measures can be used to measure schedule robustness, 20 resources and resource/time-oriented surrogate measures are proposed and then, using computational results, their performance is evaluated. The results show that resource/time-oriented measures have relatively better performance than other measures. Finally, an iterative algorithm for robustness enhancement based on using the best surrogate measure is proposed and required investment is estimated. According to the estimation process, it will be shown that the slope of robustness enhancement rate towards the robustness investment is always descending.
Databáze: OpenAIRE
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