改进关键链技术的信息工程监理进度控制研究-《计算机技术与发展》

文章信息/Info

Title:: Research on Progress Control of Information EngineeringSupervision by Improving Key Chain Technology

Author(s):: ZHENG Zhi-yuan; LIU Hong-zhi; LI Hai-sheng; School of Computer Science and Technology,Beijing Technology and Business University,Beijing 100048,China

Keywords:: information engineering supervision; progress control; critical chain; safety time model; triangular fuzzy number; MonteCarlo simulation

摘要:: 在信息工程监理中,进度控制是必不可少的一项工作。而在传统的项目进度控制中,往往忽视了人类行为以及理论约束等影响,如:甘特图、关键路径等,从而无法保证项目进度如期进行。利用关键链思想,根据信息工程的自身特点,从不确定性出发,设定安全时间评价系数,利用三角模糊数建立安全时间模型。之后对影响因素进行量化,同时利用层次分析法对量化后的影响因素进行加权,最后利用改进的缓冲区计算公式对缓冲区大小进行计算,从而提高项目计划的准确度。运用关键链技术来提高对进度的控制力度,利用蒙特卡洛仿真模拟项目从开始到完工的过程,通过实验结果进行对比分析,优化项目进度管控,降低延期风险,确保项目在保证质量的前提下按时完工。结合信息工程监理的特点,以关键链理论为支撑,研究适合于信息工程监理的进度控制方法,并以此能够对相关实践起到指导作用.

Abstract:: During the information engineering supervision, progress control is an indispensable task. But in tradition project progress control, human behaviors and theoretical constrains are often ignored,such as Gantt Chart,critical path, etc. Thus,the project progress cannot be guaranteed on time. Based on concept of critical chain,according to the features of information engineering,starting from uncertainty,we set safety time evaluation coefficient and use triangle fuzzy number to establish safety time model. After that,influentialfactors are quantified. Meanwhile,analytic hierarchy process is employed to assign weights on influential factors after quantification, the nan improved buffer calculation formula is used to calculate the size of buffer,thereby increasing the accuracy of project plan. Critical chain technology is used to increase the control power on progress. Likewise,the process from the beginning to the end is simulated byMonte Carlo simulation. We conduct comparative analysis based on experimental result,optimize project progress control,reduce delayrisks and ensure the project to finish in time with satisfying quality. Combined with the features of information engineering supervision,supported by critical chain theory, we research on the progress control method suitable for information engineering supervision, and provide guidance for related practice.