掙值法外文翻譯word版-wenkub.com
2024-08-28 22:41 本頁面
【正文】 目前該項目在完成62%階段，預(yù)計完成修訂估計費用為$250,000美元，減少從原來的估計。三個半月后，施工，開挖，地基，構(gòu)架，和粗糙的電氣工作完成。示例一個簡單的問題，將有助于說明原則的應(yīng)用價值。若ACV＞1，該項目預(yù)計將超越或超過預(yù)算。預(yù)測的東非共同體也可以得到在特定時間點的變量已被定義。計劃完成百分比（PPC）是在一個時間點的比例BCWS/BAC，表示為百分之一。確定地位的完成百分比的一個項目，也可以實現(xiàn)與已定義的變量。一般來說，可以預(yù)計，指數(shù)小于1的早期項目，作為項目的進展。，項目，計劃之前SPI=BCWP/BCWS（SPI 1：進度提前，SPI 1：進度落后）CPI：成本績效指數(shù)：BCWP/ACWP：這在直接比較預(yù)算成本實際成本的基礎(chǔ)上完成的工作。CV=BCWPACWP（CV0：預(yù)算節(jié)支，CV0：超過預(yù)算）這些差異可以進一步用表示比率的百分比數(shù)字表示：%SV：%進度差異：100SV/BCWS：這一比率表明在百分偏差的時間表的基礎(chǔ)上偏離預(yù)算成本值。工作提供了共同單位比較。負(fù)值表示項目進度落后的“價值”的工作是低于計劃。ACWP:已完成工作實際成本：這是衡量，匯集了監(jiān)測的時間安排（工作）和成本記錄（實際成本）。它需要做出評估完成的工作量（時間）的日期和運用適當(dāng)?shù)念A(yù)算數(shù)額為這項工作。了解項目進度，它有可能確定的數(shù)額的金錢預(yù)算相對時間。附錄THE EARNED VALUE CONCEPTThe earned value concept (sometimes also called achieved value) pares several measures to obtain an overall picture of project status. The following are the three primary data requirements:BCWS: Budgeted Cost of Work Scheduled: This measure, also called the project plan, is developed at the outset of the project as it involves assigning to activities the amount budgeted (estimated) for every activity. Knowing the project schedule, it is possible to determine the amount of money budgeted relative to time. This is essentially the same as developing the cumulative cost curve discussed earlier.BCWP: Budgeted Cost of Work Performed: This is the earned value as it indicates what the budgeted costs are for the work that has actually been performed to date. Note that this represents the periodic worth of the work that is actually performed, based on the initial estimate, and has nothing to do with the actual costs incurred in performing the work. It requires making an assessment of the amount of work pleted (time schedule) to date and then applying the appropriate budgeted amounts for this work.BAC: Budgeted Cost at Completion: This is the original cost estimate of the total cost of construction. It is ideally the total estimated cost to plete a project.EAC: Estimated Cost at Completion: This is the forecast of the total actual costs required to plete a project based on performance to date and estimates of future conditions.ACWP: Actual Cost of Work Performed: This is the measure that brings together the monitoring of both time schedule (work performed) and cost records (actual cost). It gives the actual costs to date. (Note that ACWS, Actual Cost of Work Scheduled, is not a ponent of the system, because if the work scheduled has not yet been performed, it is impossible to determine its actual cost!)Comparing the first (BCES) and last (ACWP) values to the earned value (BCWP) gives us an indication of “variances” from the ex
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