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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.
In project management, a schedule is a listing of a project's milestones, activities, and deliverables. Usually dependencies and resources are defined for each task, then start and finish dates are estimated from the resource allocation , budget , task duration , and scheduled events.
A Gantt chart showing three kinds of schedule dependencies (in red) and percent complete indications. Henry Gantt, inventor of the Gantt chart. A Gantt chart is a bar chart that illustrates a project schedule. [1] It was designed and popularized by Henry Gantt around the years 1910–1915.
Examples of such an activity may be project budget accounting, customer liaison, etc. Linear scheduling method (LSM) is a graphical scheduling method focusing on continuous resource utilization in repetitive activities. It is believed that it originally adopted the idea of Line-Of-Balance method.
Specific names for the linear scheduling method have been adopted, such as: [1] Location-based scheduling (the preferred term in the book) Harmonograms; Line-of-balance; Flowline or flow line; Repetitive scheduling method; Vertical production method; Time-location matrix model; Time space scheduling method; Disturbance scheduling
A resource-leveled schedule may include delays due to resource bottlenecks (i.e., unavailability of a resource at the required time), and may cause a previously shorter path to become the longest or most "resource critical" path while a resource-smoothed schedule avoids impacting the critical path by using only free and total float. [14]
PERT network chart for a seven-month project with five milestones (10 through 50) and six activities (A through F).. The program evaluation and review technique (PERT) is a statistical tool used in project management, which was designed to analyze and represent the tasks involved in completing a given project.
Scheduling is the process of arranging, controlling and optimizing work and workloads in a production process or manufacturing process. Scheduling is used to allocate plant and machinery resources, plan human resources , plan production processes and purchase materials.