.png){kind=icon}
返回
Optimal project duration for resource leveling
.png){kind=icon}
OA
AI
DOI：10.1016/j.ejor.2017.10.022.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
Resource leveling is important in project management as resource fluctuations are costly and undesired. Typically, schedules with better resource profiles are obtained by shifting the activities within their float times using the schedule of fixed duration found by Critical Path Method. However, if the project duration can be extended, it is plausible to find a schedule with enhanced resource leveling since a longer duration allows for more float time for all activities. In this work, we relax the assumption of fixed durations in resource leveling formulations and investigate what the minimal project duration for the best leveled schedule should be. We provide mixed-integer linear models for several leveling objectives including the Release and Rehire metric. We show that not all metrics used for leveling under fixed durations may be appropriate when the project duration becomes a decision variable. Optimal solutions from smaller problems are used to find the magnitude of the extension needed and benefits obtained thereby. Since the problem is a NP-hard problem for which exact solutions cannot be obtained for large networks in reasonable time, we provide a greedy heuristic to be used with the Release and Rehire metric. Using an iterative framework, we also test the performance of a state-of-the-art heuristic algorithm from the literature on our problem. Computational experiments indicate that the more the number of resources is increased, the less leveling benefits are gained from extending the project. The optimal project durations and extension benefits can also be significantly different for different metrics. (C) 2017 Elsevier B.V. All rights reserved.
Keyword:
Project scheduling
Resource leveling
Variable project duration
Mixed integer linear programming
Release and Rehire metric
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
6
论文数:
2.2W
被引数:
6.4W
机构
引用论文
Metaheuristics for project and construction management - A state-of-the-art review用于项目和施工管理的元启发式-最先进的评论
.png){kind=icon}
PREAI
分享收藏Neurocognitive Deficits in Alcoholics and Social Drinkers: A Continuum?酗酒者和社交饮酒者的神经认知缺陷: 一个连续体？
PREAI
分享收藏
没有更多内容
没有更多内容