...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Construction Management and Economics >Precedence relationship options for the resource levelling problem using a genetic algorithm
【24h】

Precedence relationship options for the resource levelling problem using a genetic algorithm

机译：使用遗传算法的资源均衡问题的优先关系选项

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The resource levelling problem (RLP) arises in project scheduling where the intention is to reduce the fluctuation of the resource demand. The solutions of the RLP are achieved through the rearrangement of the project activities under a constraint of preselected precedence relationships. To relieve the constraint, a new concept of the RLP with relationship options is initiated. An activity of the project network can have one or more alternative types of relationship with other activities as appropriate. An alternative relationship provides more float time and allows new possibilities for the arrangement of efficient patterns of the project resource demand. The scheduling problem model was formulated by using mathematical equations on spreadsheet software and solved by using the genetic algorithm based optimization. The prototype was tested in two different project instances. The test results demonstrated that this new model could calculate and arrange the project schedules for all selected alternative types of relationships. The model with relationship options provided consistent results for efficient resource utilization schedules, which were better than the one without relationship options. These schedules could decrease the resource demand fluctuation and the maximum resource demand level. This new model of the RLP with relationship options not only provides the additional flexibility to level the resource demands but also determines suitable types of relationships for the project activities.
机译：资源平衡问题（RLP）出现在项目调度中，其目的是减少资源需求的波动。 RLP的解决方案是通过在预先选择的优先级关系的约束下重新安排项目活动来实现的。为了减轻约束，提出了带有关系选项的RLP的新概念。项目网络的活动可以与其他活动适当地具有一种或多种其他类型的关系。替代关系提供了更多的浮动时间，并为安排项目资源需求的有效模式提供了新的可能性。通过在电子表格软件上使用数学方程式来制定调度问题模型，并使用基于遗传算法的优化对其进行求解。该原型在两个不同的项目实例中进行了测试。测试结果表明，该新模型可以计算和安排所有选定替代关系类型的项目进度。具有关系选项的模型为有效的资源利用计划提供了一致的结果，这比没有关系选项的模型要好。这些计划可以减少资源需求波动和最大资源需求水平。具有关系选项的RLP的这种新模型不仅为满足资源需求提供了额外的灵活性，而且还为项目活动确定了合适的关系类型。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号