甘特图与汇集图(国外英文资料).docVIP

甘特图与网络图(国外英文资料) The gantt diagram and the network diagram The Gantt chart is called the Bar chart. It was invented in the first world war ii, with Mr Henry l. gantt name, he made a complete with a bar chart the progress of the sign system. Gantt chart simple inner thought, namely activities through the list and time scale in the form of graphic image to show any specific project activities order and duration. Basically a line diagram, the horizontal axis represents time, the vertical axis represents the activity (project), the line represents the plan and the actual activities completed during the whole period. It intuitively indicates when the task plan is going to take place and the actual progress versus the planned requirements. This makes it easier for managers to figure out what the task is left to do and to assess the progress of the work. Gantt chart advantages Graphical profiles, common technologies, easy to understand Small and medium-sized projects generally do not exceed 30 activities; Professional software support, no need to worry about complicated calculation and analysis. Gantt chart is limited In fact, only partly reflects the triple constraints (time, cost, and scope) of project management because it focuses on process management (time); 2. The software is not enough, although can through the project management software describing the inner relationship of the project activity, but if the relationship is overmuch, stemming the gantt chart reading map will increase the difficulty. Network diagram Network planning is a graphical model of a Network that is known as a Network diagram. Network diagrams are composed of three factors: homework, event, and route. A network diagram is a graph that shows the flow of a work through an arrow and a node. According to the method of drawing expression, it is divided into double code representation (work by arrow line) and single code representation (work by nodes); According to the logical relationship and time