ZhaiJiSong Yangfan Project Control Research

With the development of society, the development of technology and all walks oflife gradually fierce competition, information technology if becoming more and moreimportant. Especially express company, have already into information process,imformationization level gradually improve. The domestic express enterprises are toset up their own business system, gradually through the software system to improvethe customer service, and through the decision support system, improve the level ofmanagement. Along with the express the requirements of customers, continuouslyimprove the competition in the industry intensified gradually, ask express enterprisedesign more products for customer service, and in time overall business data analysis.Provides managers with more timely effective decision-making information. Can saynow express industry competition is the product competition, technologicalcompetition.Previously, express business single, the lack of service, information system canbe made by the enterprise information personnel independent development, cansatisty the express business needs, but with the fierce market competition, and thesimple express enterprise internal IT independent development personnel already didnot satisfy the need of the market, express information system development fromtraditional independent research and development gradually to cooperationdevelopment, outsourcing development change. But because IT people expresscompany quality low, strength book, project management and control of neglect,express enterprise business software projects often appear software quality low, can’tbe completed on time phenomenon. These with increasingly fierce competition in themarket is not serious, so how to improve the software development project schedulecontrol is the urgent need to resolve problems.According to the problems, this article through to express business systemsoftware development progress restriction factors of discussion, combined with the express business system software development project characteristics and process,discuss applications of the shortcomings of the traditional network programmingmethod, and puts forward the key chain theory in improving the management,improve the project time schedule control of validity and stability. Key chaintechnology is Israel’s management experts Coldaratt put forward in1997, its mainconsideration resources constraint and personnel to the project’s psychological factorsinfluence, will project network plan in resource constraints, consider the longest chainas key chain project task, and by establishing a buffer, resources, project buffer intobuffer to eliminate all kinds of resources of the conflict and the result of humanfactors affect the project schedule. This paper according to Coldratt in his book “thekey chain” in the paper about the main ideas of the key chains and specific steps,establish schedule control process, fully eliminate all kinds of factors, to solve keychain in the application of the actual problem.The project of one-time characteristics, can’t repeat the comparative analysis,this article through the system simulation form, through the use of Crystal Ballsoftware monte carlo simulation, to the traditional network planning and key chainmethod in just-in-time business system software development in the actual effect, andsimulation discussion period completed probability. Through the system simulation,the use of key chain method using traditional network planning period than moreshort, time limit distribution more stable.