关键词: 现金流均衡项目调度, 前摄性, 反应性, 禁忌搜索和模拟退火嵌套算法, 随机活动工期

Abstract: It is important to implement projects successfully and smoothly, the contractors' cash flow of which is balanced in uncertain circumstances. The authors study proactive and reactive cash flow balanced project scheduling problem based on random duration of activities. The purpose of this paper is to generate a baseline schedule for the contractor and to adjust it dynamically during the project executing process. The proactive scheduling optimization model is constructed and then the authors provide two reactive optimization models to adjust the baseline schedule. Further, a hybrid algorithm, tabu-SA, is developed to solve the studied problem. Ultimately, for the proactive scheduling model, experiment is conducted on the standard project instances set and further large scale reactive simulations are performed on each instance. The research could provide decision supports for the contractors to ensure cash flow to be balanced in the environments with random activities duration.

Key words: cash flow balance project scheduling, proactive, reactive, tabu-SA, random activity duration