进度差异(schedule variance)显示了计划工作预算成本(BCWS)和BCWP之间的差值,以美元为单位近似表示项目进度。这个例子中项目当前进度落后。
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文化差异容易增加复杂性,例如,在某些地区,按照规范,甚至当工程拖后进度几个星期也宣告成功。
Cultural differences tend to add complexities; for example, the norm in some regions is always to assert success, even when a project has fallen weeks behind schedule.
差异通常包括外部前置任务或外部后续任务的开始日期或完成日期的更改,一般是由于工期、限制、跟踪进度等更改引起的。
Differences usually include a new start or finish dates for the external predecessor or external successor, typically the result of a changed duration, constraint, tracked progress, and so on.
在对实际进度进行动态跟踪后发现实际进度与计划进度出现差异时如何进行有效而快速的调整,对监理工程师来说,这并不是一个容易的问题。
How to carry on valid and fast adjustment when difference appears between actual progress and former plan progress, to supervisory engineers, it is not an easy problem.
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