Plan Based On The Contact Number Of Network Technology

Network planning is an effective system analysis and optimization method. It has been successfully applied in the field of military, aerospace, engineering management, science research and so on. But it is difficult to determine the productive time of a working procedure, there is uncertainty of it. This uncertainty is random, fuzzy and intermediate uncertainty, which can be dealed by connection number method. Certain time, uncertain time bi and unexpected incident time cj are considered in this method. This method provides more useful information and more flexible than the traditional method. Before implementing network planning, productive time of a working procedure is unknown. Therefore, the paper presents two methods which judge the possibilityof a working procedure.Method 1 is based on SPA method of comprehensive judgment.Case(1): Several experts in this field estimate connection number of productive time of a working procedure. Expression of connection number is got by method of comprehensive judgment, which considers every experts suggestion.Case(2): When making network planning, productive time of a working procedure is sometimes estimated based on the whole duration of a project. are the conditions existing in a working procedure. are the conditions which should be met by the view of experts in this field. Therefore and form a pair sets. The probability of a working procedure is obtained by comprehensively evaluation of experts in 3 aspects for a pair sets.Method 2 is the research based on connection number state sort. Factors which influence productive time of a working procedure, can be divided into several grades, four grades in this thesis, that is: {absolutely completion, completion, probable completion, unable completion}. Corresponding elements of state sort table are adopted, that is four elements state sort table. Connection number expression is found by the method of weighted value. Comparing this connection number with state sort table the grade of a working procedure's connection number is judged, then the possibility of this working procedure is got.This thesis presents also a method, which comprehensive evaluation in case the weighted value of evaluation index is disregarded. By adopting state sort, considering weighted value, unconsidering weighted value of factors, comprehensive evaluation can be done.