【 Weak current College 】 project time management (1)

Time management priority is making progress management plan, but not the activity definition, schedule management plan not as a separate process definition, but actually exist as part of project management, schedule management plan to tell you how to make already if effective management and tracking project progress. Schedule management plans should include identifying development schedule of estimation methods and procedures, to approach and how to estimate to determine the progress of metrics and deviation management method, determine how to track progress on performance and projects change programs.
1. the activity definition
In the range defined process or output work breakdown structure WBS WBS, the lowest level is a work package, and the activity definition is targeting the underlying work package decomposition, as progress estimates that arrangements, tracking and control Foundation. In real-world projects we often do when direct WBS decomposition is decomposed into an activity, or because the decomposition to active number is too big and directly on the network map in work packages, these are not scientific.
Activities defined output is a list of active list and milestones, note listing just list what activities, what are the milestones and does not contain the duration or specific time points and other information. Another output is active properties, this is a time management follow-up all process group to continuously updated one output, are more active in one or more of the properties are updated or added.
2. the activities of the sort
Activities in order to determine the activity before and after and dependencies, forming a network map. In the active sort phase network diagram only reflect activity dependencies, when the active duration estimate completed activity diagram can calculate the critical path, when taking into account the balance between resources and the resource calendar when the activity diagram might become a valuable progress meter.
Single-arrow network (PDM, AON)
A. you can have the start-finish, start-start, finish-start, finish-complete the four relations
B. There is lag and lead volume
C. activities in node above
-Arrow network (ADM, AOA)
A. activities on the arrow line
B. in order to express dependencies, you need to use virtual activities
C. amount without delay
D. only complete start a relationship.
Graphical evaluation and review technique (GERT): is a network drawing method, the focus is on running loop or conditional
Program evaluation and review technique (PERT): three-point method
The value of the calculation: PERT (optimistic time + 4 * most likely time + pessimistic time)/6, deviation (optimistic time-pessimistic time)/6
Three dependencies
A. mandatory logic
B. free dependence (preferred logic or soft logic)
C. external dependency (external dependency from the project, General network map does not reflect)