Value method to obtain the basic principles and elements of integrated access to multi-value method

[Abstract] get value method to obtain value by introducing the concept to achieve the cost and progress of joint monitoring and forecasting, project management has made important contributions to the development of this paper describes a method to obtain the basic principles and values ​​that the problem , reviewed the two multi-element integrated to obtain value method. concluded that research and Application integration method should pay attention to the problem.

[Keywords:] to obtain the value of multi-element integration of theory synthesis method

I. Introduction

Get value method (Earned Value Method, EVM) is a comprehensive modern project management methods. Application method can be obtained by calculating the value of project costs and schedule variance, performance index, the project managers to understand project progress and forecast project completion time and costs, can be profitable in the future it can help the project manager or project team to detect problems in the project, in order to take proper action to ensure the success of the project now, the authority of many academic and business circles who believe that "to obtain the values management system "will become the 21st century's leading project management methods. With in-depth research and Application of EVM, domestic and foreign scholars have put forth to improve the traditional methods of EVM this paper the basic principles of EVM and integrated multi-element improvements methods are reviewed, pointing out that future research and Application of the method should pay attention to.


Second, get the value of the basic principles of law and its problems

Get value method is through the entire project or work package plan value (PV), completion of the budget (BAC), the actual cost (AC), get value (EV) these basic data and the cost of deviation (CV), Schedule Variance (SV), cost performance index (CPI), Schedule Performance Index (SPI), estimated completion (EAC), completion time estimates (TEAC) is calculated, to monitor project progress and forecast completion costs and time.

Calculated value method to obtain the basic indicators are as follows.

(1) PV: according to time-phased budget baseline at some point in time it is, according to the approved schedule and budget plan, corresponding to the cumulative amount of work done to invest in value, that is, a given point in time the value of work to be done .

(2) BAC: activity, the total work package or project baseline is the total budget to complete all the work, so from a graphics point of view is the highest point of the PV.

(3) AC: actual time to complete a given activity, work package or project and get the appropriate value of the actual costs.

(4) EV: completion of a given point in time the required budget and it is estimated cost to complete the work, that is recognized under the approved budget, to a point in time has been invested to complete the required cumulative value.

Monitoring indicators are as follows.

(1) CV: used to measure the budget in line with the actual completion of work, CV = EV-AC, CV <0, the fee overruns, CV = 0, the fee to use the same case with the original plan, CV> 0, the fee has balance.

(2) SV: used to measure the actual progress precisely the extent and duration requirements, SV = EV-PV, SV <0, the progress backward, SV = 0, the progress and plan the same, SV> 0, the progress ahead.

(3) CPI: used to measure the actual cost of work done in line with the budget level, CIPI = EV / AC, CPI <1, the fee overruns, CPI = 1, the fee to use the same case with the original plan, CPI> 1, the fee from the balance .

(4) SPI: used to measure the actual progress precisely the extent and duration requirements, SPI = EV / PV, SPI <1, the progress backward, SPI = 1, the progress the same as the original plan, SPI> 1, the progress ahead.

These monitoring indicators of the problems is to ignore the critical level of activities, from the overall analysis of the project, the calculation of the SPI will have certain errors.

Predictive value method to obtain the following.

(1) EAC: the cost of the project completion forecast EAC = AC + (BAC-EV) / CPI = BAC / CPI, this formula is commonly used EAC formula.

(2) TEAC: the time required for project completion forecast, TEAC = SAC / SPI, which SAC for the planned completion time.

These monitoring indicators of the problems is the completion time of the forecast is based on SPI, and SPI is calculated from the point of view no matter how the progress of the project, the project approaches the end of the EV approaches as PV, so even if the projects fall behind schedule, SPI value will gradually close to 1, does not accurately reflect the project's progress.

Links to free download http://www.hi138.com Third, many elements of the integrated method to obtain values

The goal of the project management life-cycle cost is the lowest, Qian Bang that completion of the project quality and resource prices and other factors will affect the project completion time and cost, Zhu Jin, Qian Bang, who has conducted some research, get the value of the multi-element method integrated management.

1 five value method
Zhu's five values ​​into the analysis of the project's construction side and the owners be distinguished. Get value method is by the U.S. Department of Defense as investors and owners that the cost of the development progress of joint control, and did not take into account the construction side of the profit. Zhu Jin get value method proposed by the original BCWS, BCWP, ACWP BCWS  2 based on the introduction and BCWP  2 way into the profits of the construction side project performance evaluation system in which, BCWS  2 is a construction unit according to contract contract scope of work, the preparation of the completion of the contract the cost of all work plans and this value determines the profitability of the project is the basis for project cost control. BCWP  2 based on the actual workload and BCWS  2 was arrived at, and ACWP with deviation profit comparisons.

2 Quality value method to obtain
Qian Bang by exploring the project cost, schedule and quality of the integrated management approach, the three elements of the project presented a prototype of an integrated management approach, using mass index as an intermediate variable, the value will be converted to quality has been the value of the forecast project completion time, You can use the value of quality has been the quality of the repair of accident or rework caused by defects in the quality of the project schedule delays into account. Feng Dongmei further pointed out that the activities of the quality index with the average quality index as a project seeking project quality deviation. Fu Hongyuan, etc. through construct a fuzzy AHP quality evaluation model, using hierarchical method to determine the activities of the weights, weighted average method to calculate the project quality indices, evaluation of project quality, and use of quality evaluation results of correction obtained value method. Sun Mitsue in obtaining the value of law the introduction of the actual amount of cost of quality QACWP, which is equal to the total cost of quality cost account, and the ACWP be by comparing QACWP index to analyze the quality of the implementation of effective quality of the project to identify improvements.


Fourth, the comprehensive review and research prospects

To get value method has become a multi-element integrated project management approach, scholars have put forward a five-value method, the quality obtained value method, these methods further research needs to integrate financial, quality management, project management, statistics and other aspects of knowledge, how to effectively integrate these values ​​is to obtain a multi-element method integrated management approach is the key. Moreover, according to the present studies, the value method to obtain the trend is multi-element integrated project management, integration, including profits, quality, duration, costs and many other elements, in specific Applications should be emphasized, such as the relative importance of defense in the duration of the project, the value obtained in the application of law to ensure the duration can be adjusted cost; quality in the project impact on the future maintenance of the more important items , you can focus on examining the quality of projects received value.


References:
[1] Jin Zhu. Earned value method in the construction unit in the application [J]. Management World, 2008 (10) :68-69.

[2] Qian Bang. Multi-element integrated project management methods [J]. Nankai Management Review ,2002.70-75.

[3] Fu Hongyuan, Wong Chong Bin, Zhao waves based on project quality evaluation of the quality of the earned value method [J]. Chongqing University (Natural Science), 2007,30 (3) :141-144.

[4] Sun, Mitsue. Earned value method to improve the theory in construction projects in applied research [J]. Shanxi Architecture, 2008,34 (12) :342-442.

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