A path-generation framework for real-time query processing in wireless sensor networks
Proceedings of the 2013 Research in Adaptive and Convergent Systems
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PERT and CPM, acronyms for "program evaluation and review technique" and "critical path method", respectively, are network techniques used to aid in the planning, scheduling, monitoring, and control of activities which are related to each other. For example, CPM is frequently used in the construction industry to help organize and schedule those activities which together constitute a given construction project. PERT was first used to help coordinate the activities in the development of the Polaris missle system. PERT and CPM differ from each other in that activity times are handled differently by these two closely related techniques. In using CPM, one assumes the activity times are known with certainty (deterministic activity times); PERT allows for uncertainty and statistical variation in activity times (stochastic activity times). Never the less, PERT and CPM are closely related (CPM may be a special case of PERT), and a variety of projects are subject to analysis by either technique:(1)(1) construction projects(2) planning and launching a new product(3) a turn around in an oil refinery (or other maintenance projects)(4) installing and debugging a computer system(5) scheduling ship construction and repairs(6) manufacture and assembly of large job-lot operations(7) missile countdown procedures(8) end-of-the month closing of accounting records(9) research and development projects