![]() ![]() The striking difference between the two methods is in time estimates employed. Originally, it focussed only on time variables, but later incorporated cost variables also. PERT was developed for the US navy to schedule the research and development activities for Polaris missiles programme. It is used to formulate a time frame for a project to determine where potential delays are most likely to occur. The two best-known techniques for network analysis are Critical Path Method (CPM) and Programme Evaluation and Review Technique (PERT), both of which were developed between 1956-58.ĬPM was developed by the du Pont Corporation as an application to a construction project. Note: Although the equation assigns the letters a, b, and m to optimistic time, pessimistic time, and most likely time, respectively, the entities may also be denoted as: The expected value (t) is calculated by using the formula Most likely time = An estimate of the amount of time an activity would normally take. Pessimistic time = An estimate of the longest time an activity is likely to take (it is unlikely to be completed more quickly only one in hundred times) Optimistic time = An estimate of the shortest time an activity will take (it will occur more quickly only one in hundred times) Probabilistic time estimate: An estimate that is based on separate estimates of No time is spent on dummy activities.ĭeterministic time estimate: An estimate that is the single most likely time (required for an action/process). Such an activity only indicates which activity must precede the completion of another activity in the network. Others denote CPM and PERT as techniques under network analysis.ĭummy activity: An activity whose sole purpose is to maintain the logical ordering of activities while following the requirements of network construction. Some use the term network analysis synonymously with critical path method (CPM), critical path analysis (CPA), and programme evaluation and review technique (PERT). Network Analysis: The general name given to certain specific techniques which can be used for the planning, management, and control of projects. ![]() Note: It may be useful to think of a network as an abstract concept that refers to various structures comprising variables (represented by nodes), and the relationships between these nodes. Generally, networks flow from left to right and may or may not be drawn to scale on a time-based calendar.Įssentially, a network is a graphical representation of logical and sequentially connected activities and events in a project. It portrays the events and activities that are planned for the project and allows their sequential relationships and interdependencies. Network: A visual representation of the interrelated flows of work that must be fulfilled to complete a project. The project management system focuses on integrated planning and control. The procedures that facilitate integration of horizontal and vertical elements of the project organization.Information processing and decision-making.It has three key features that distinguish it from other forms of management: Project Management: A distinct area of management that aids in handling projects. The second definition is more flexible in that it is suitable for both unique and repetitive processes. It may also be defined as a combination of interrelated activities which must be executed in a certain order for its completion. Project: A temporary endeavour undertaken to create a unique product or result or service. ![]() #Network analysis pdf pdfNetwork Analysis and Synthesis by M E Van Valkenburg Book Detailsĭownload Network Analysis and Synthesis by M E Van Valkenburg Book PDFĭownload the complete Network Analysis and Synthesis book by M E Van Valkenburg PDF from the below link.This article series is aimed at students desirous of better understanding network analysis and will describe the same in some detail.
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