It is the project management technique which performance of project (cost and schedule) quantitatively it measures & analyzes the earned value which is something which (the chart displays the progress and the degree of achievement of job usually) money () as a standardized scale, manages monistically. At the Department of Defense and the like, it is adopted as management system of the general public supply.
GenerallyWBS to calculate the man-hour which is necessary for the base, to draw up the plan which from here is expressed with money value, achievement schedule amount every of checkpoint (the performance measurement base line: PMB) It sets. In plan money sum total of each job reaches entire cost of project. The money expressing also the achievement job quantity even at project practical phase, by the fact that it compares with achievement schedule amount, it grasps the schedule of task progress quantitatively. By the fact that actual expense and achievement amount is compared simultaneously, it means to be able to measure also the progress of the cost aspect.
To need) usual grasping, it measuresthe performanceof project dynamically, whether with both sides of schedule and cost, alienation from the base line (it makes completion time and the cost estimate when completing whose precision is high possible. In addition, because even completion delay and excess over the estimates it can estimate, it becomes the effective tool of risk management for the project owner. In addition,in PMBOK, it is located as the fundamental tool of management of progress.
It was old historically, was applied first in the Minuteman missile development program 1962, C/SCSC (Cost/Schedule Control Systems Criteria) with management criteria of 35 items which are called were set in 1967 as an Army Procurement Procedure portion of the Department of Defense. This standard to insert also application to national welfare in range of vision, the American national security industrial establishment association (NDIA: Those which National Defense Industrial Association) were based on demand and add somewhat correction and glossary to be done release, in 1998 June the American Standard Association (ANSI: American National Standards Institute) with the name of EVMS, issued as ANSI/EIA-748-1998.
In the United States with bid of government affiliation of one fixed amount or more correspondence is required of the proposal trader, with Department of Defense and NASA large-scale EVMS education is done. The economic industrial ministry it recommends adoption as a management expedient of system development project as domestic standard, it is utilized even in Canada, England, Sweden and Australia and the like in US. |
