What is the program review technique in project management?

Program Review Techniques.

Refers to the use of network diagrams.

to express the progress of the various activities in the project and the interrelationships between them, and on this basis, network analysis and time estimation are carried out.

This method considers the duration of the project, as well as the length of time it takes to complete the project as a whole, to be random, following some probability distribution.

You can take advantage of the activity relationship and the weighted sum of the duration of the project, which is the mathematical expectation of the duration of the project.

Calculate project time.

Program Evaluation and Review Technique (PERT) and Critical Path Method (CPM) are an important part of network analysis, which is widely used in system analysis and project management, and the Program Evaluation and Critical Route Method was proposed and developed in the 50s of the 20th century. In 1956, DuPont proposed the Critical Route Method in order to coordinate the systematic planning of different business departments of the enterprise. In 1958, when the US Navy Armed Forces Department was developing the "Polaris" missile program, because the missile development system was too large and complicated, it designed a plan review method in order to find an effective management method.

Since PERT and CPM have the same target applications and many of the same terms, the two methods have been merged into one method, which is called Pert CPM in China and the scheduling method in China.

CPM and Pert are independently developed planning methods, but differ in their specific practices. CPM assumes that the time of each activity is deterministic, while the time of PERT's activity is based on probabilistic estimates; CPM considers not only the time of the activity, but also the cost of the activity and the trade-off between cost and time, while PERT considers less cost. The CPM uses a node-type network diagram, and the Pert uses an arrow-type network diagram. However, the basic principle on which the two are based is basically the same, that is, the logical relationship between the specific activities in a project plan is expressed in the form of a network, which is now collectively referred to as the network planning technology.

1. There are different ways to determine working hours.

1. Critical path method.

The Critical Path Method, or CPM, is based on empirical data to determine the timing of each task.

2. Plan review technology.

Program Evaluation and Review Technique (PERT) uses the time of each job as a random variable.

to deal with it. Second, the purpose is different.

1. The critical path method (CPM) aims to shorten the time and improve the investment efficiency.

2. The PERT technology can point out the key to shortening time and saving costs.

The plan review technique refers to the use of network diagrams to express the progress of various activities in the project and the interrelationships between them, and on this basis, network analysis and time estimation are carried out.

The method considers the duration of the project and the length of the entire project completion time to be random, obeying a certain probability distribution, and can calculate the project time by using the weighted sum of the activity relationship and the project duration, that is, the mathematical expectation of the project duration.

Correct Answer: 1The plan review technology is to treat the project as a system, with a network diagram or ** or matrix to represent the sequence and interrelationship of the specific Shiling work, (1 point) time as the center, the limb chain to find out the key line from the start to the completion of the longest time, (1 point) and around the key line of the system for overall planning, reasonable arrangement and strict control of the completion of the progress of the work, in order to achieve the least time and resource consumption to complete the system predetermined goals of a planning and control method.

1 point) to return to grandchildren.

The plan review technology is that the project is regarded as a system, with a network diagram or a matrix to represent the sequence and interrelationship of the specific work, with time as the center, to find out the longest route from the start to the completion of the time, and around the key route of the system for overall planning, reasonable arrangement and strict control of the completion of the progress of the work, in order to achieve the least time and resource consumption to complete the system predetermined goals of a planning and control method.

Answer]: BB [Analysis] The fundamental difference between the plan evaluation and evaluation technique (PERT) and the key line only section road Zhengshan method (CPM) is that it uses weighted average time estimation, and the schedule plan made is more realistic than the key line method (CPM) using the maximum possible estimate.