基于工序异质性的关键链项目缓冲监控

通过关键链项目缓冲监控可以防止缓冲在项目执行阶段被浪费，并保证项目的工期，有效的监控方法有利于提升项目的整体绩效。为了克服统一缓冲监控方法的不足，在保证项目工期的基础上，本文考虑成本因素对项目的影响，提出了一种基于工序成本和工期敏感度的差别动态缓冲监控模型。该模型考虑工序异质性将工序划分为成本敏感型工序和工期敏感型工序，根据工序的综合感知效用进行缓冲监控分配，并结合敏感度对不同类型的工序设置不同的监控基准点和纠偏措施。仿真结果表明，差别监控相对于统一的监控模式有利于实现项目工期和成本的双优化，验证了本文方法的有效性。

Buffer Monitoring of a Critical Chain Project Based on Activity Heterogeneity

Buffer management is the core of critical chain project management. Buffer monitoring can prevent buffers from being wasted during the project execution stage and ensure the project's duration. Effective monitoring methods are beneficial to improve the overall performance of the project. Cost and duration are two key factors in project management, and the sensitivity of activities to costs and duration is different. If a unified buffer monitoring model is adopted for all activities, it may lead to waste of costs and duration. In order to overcome the shortcomings of the unified buffer monitoring method, on the basis of ensuring the project duration, the impact of cost factors on the project is considered, and a dynamic buffer monitoring model is proposed based on the different cost and duration sensitivity. The model considers process heterogeneity to divide activities into cost-sensitive activities and duration-sensitive activities, allocates buffer monitoring assignments based on the overall perceived utility of the activity, and sets different monitoring reference points and corrective measures for different types of activities. Among them, the cost-sensitive activity sets a lower buffer monitoring reference point, and the duration-sensitive activity sets a higher buffer monitoring reference point. The simulation results show that compared with the unified monitoring mode, differential monitoring is conducive to double optimization of project duration and cost, which verifies the effectiveness of the method in this paper.