项目管理PPTChapter5ProjectTimeManagement.pptVIP

Activity, or task 活动，也称任务 Activity-on-arrow 双代号网络图法 Activity-on-node 单代号网络图 Arrow 箭线 Backward pass 逆推法 Beta distribution β分布 Burst activity 发散活动 Concurrent activities 并行活动 Confidence interval 置信区间 ;Crashing 赶工 Critical path 关键路径 Critical path method 关键路径法 Duration estimation 历时估计 Early start date, ES 最早开始时间 Event 事件 Float, or slack 浮动时差 ;Forward pass 正推法 Hammock activities 集合活动 Laddering activities 阶梯化活动 Late start date 最晚开始时间 Merge activity 汇聚活动 Network diagram 网络图 Node 节点 Ordered activities 排好序的活动 Path 路径 Predecessors 前置活动 ;Program evaluation and review technique 计划评审技术 Project network diagram, PND 项目网络图 Project planning 项目计划编制 Resource-limited schedule 有限资源进度计划 Scope 范围 Serial activities 串行活动 Work package 工作包 successors 后续活动 P283;Chapter 5 – Project Time Management;1. Concept of Project Time Management Activity Duration Estimating--estimating the work periods needed to complete individual activities. Schedule Development--analyzing activity sequences, durations, and resource requirements for the schedule. Schedule Control--controlling changes to the schedule. ; 2. Activity Definition Must be defined to meet the project objectives Identifying and documenting specific activities to produce project deliverables identified in the WBS ;3. Activity Sequencing Identifying and documenting interactive dependencies among activities. Support later development of a realistic schedule ;3. Activity Sequencing Inputs: Activity List Product Description Mandatory（必要的） Sequencing hard logic (continued);3. Activity Sequencing Discretionary(酌情行事的 ) Dependencies defined by project management team; “best practices” or unusual aspects of project – soft logic, preferred logic External Dependencies relationship between project activities and non-project activities Constraints Assumptions ;3. Activity Sequencing Tools Techniques Precedence Diagramming Method (PDM) （前导图法、紧前关系绘图法） constructing network diagram using Activity On Node