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The CPM is a project-modeling technique developed in the late 1950s by Morgan R. Walker of DuPont and James E. Kelley Jr. of Remington Rand. [3] Kelley and Walker related their memories of the development of CPM in 1989. [4] Kelley attributed the term "critical path" to the developers of the PERT, which was developed at about the same time by ...
The precedence diagram method (PDM) is a tool for scheduling activities in a project plan. It is a method of constructing a project schedule network diagram that uses boxes, referred to as nodes, to represent activities and connects them with arrows that show the dependencies. It is also called the activity-on-node (AON) method. Key elements ...
The expected duration time; The early start time (ES) The early finish time (EF) The late start time (LS) The late finish time (LF) The slack; In order to determine this information it is assumed that the activities and normal duration times are given. The first step is to determine the ES and EF.
An amortization schedule is a table detailing each periodic payment on an amortizing loan (typically a mortgage ), as generated by an amortization calculator. [1] Amortization refers to the process of paying off a debt (often from a loan or mortgage) over time through regular payments. [2] A portion of each payment is for interest while the ...
A Gantt chart is a type of bar chart [4] [5] that illustrates a project schedule. [6] This chart lists the tasks to be performed on the vertical axis, and time intervals on the horizontal axis. [4] [7] The width of the horizontal bars in the graph shows the duration of each activity. [7] [8] Gantt charts illustrate the start and finish dates of ...
Activity selection problem. The activity selection problem is a combinatorial optimization problem concerning the selection of non-conflicting activities to perform within a given time frame, given a set of activities each marked by a start time (s i) and finish time (f i ). The problem is to select the maximum number of activities that can be ...
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A Technology Readiness Level Calculator was developed by the United States Air Force. This tool is a standard set of questions implemented in Microsoft Excel that produces a graphical display of the TRLs achieved. This tool is intended to provide a snapshot of technology maturity at a given point in time.