Discuss the origin of the rings of Uranus and Neptune. Cite evidence to support hypotheses.
section 10 part 3 ds 412 Microsoft Project software is the most common software tool to utilize for tracking and managing of any project. Gantt Chart – A popular visual tool for planning and scheduling projects. However for very complex projects, often used in conjunction with network diagrams. Network Diagrams : PERT (Program Evaluation and Review Techniques) and CPM ( Critical Path Method) are the two most widely used techniques for managing large- scale projects. A graphical display of project activities. An estimate of how long the project will take. An indication of which activities are the most critical . An indication of how long each activity can be delayed without impacting the project timeline. The basic difference is that PERT permits explicit treatment of probability in its time estimates where as CPM does not PERT - Was developed in 1958 under US navy special projects office to manage scheduling and controlling the missile project. CPM - Was developed in 1957 by J.E. Kelly at Remington- Rand and M.R. Walker of DuPont to aid in scheduling maintenance shutdown of chemical processing plant. The project should have the following characteristics in order to use either of the above methods: Must have well-defined jobs or tasks whose completions marks the end of project. The jobs or tasks are ordered in that they must follow each other in a giving sequence. A job or task, once started, must continue without interruption until completion.