The programming and the control of the complex works execution
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The next data must be known for this method development:
In the figure 2.1 the Gantt graph is presented for the mentioned work; we firstly have to consider the relative time scale. The answer obtained is 75 working days. On this basis we determine the beginning date for each activity (for instance, the F activity starts in the 27-Th day of the project).We can pass afterwards at the establishment of the starting moment, taking
into account the working days in a month. We may see that the work starts on Wednesday, 1St of April and ends on Monday, 20Th of July 1998.
The structure of a complex work, denominated PROJECT, is rendered by a The project-a collection of activities with definite beginning and end - is composed of activities and events.
The activity is a specific task that is part of the project and require time and resources for completion. The activity symbol, used in a graph, is an arrow, oriented to the right.
The event is a specific accomplishment at a recognisable moment, that occurs when all the former activities have been completed. The event symbol is the event that marks the end of an activity. The events are represented by circles and numbered in such a way that the end event of an activity is higher that the beginning one. « mai multe referate din Informatica