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s monthly input from his project team and pile less frequent reports to top management , sometimes a system of reporting at key event dates is called for. The macro board of directors or pany executive falls into this members would typically be concert with a total capital investment programmer of which a particular project is a small part .report to them must be concise and contain only the minimum amount of detail required to them updated. 。 however, the quality of this control is sometimes vague and carried out in the clumsiest of ways. It is essential to establish a formalized method of control which suits the environment to which it is intended. Some of the advantages of a good control system are。 Essential Skill of Project Manager The diversity of the project system and the need to ensure that all elements function together as an integrated whole requires a high degree of conceptual skill on the part of the project manager. Kats defines it as “ the ability to see the enterprise as a whole and recognize how the various function of the anization depend on one another and how changes in any one part affect the other”. In applying this excellent definition to the project management situation, the point can be made that it is crucial to the project success that the project manager be able to conceptualize all elements of the project situation and the extent to which the elements interact with each other. The conceptual skills of the project manager are important at the planning stage of the project when the basic planning tools are being formulated. The preparation of these planning tools requires a prehensive grasp of all project tasks, the sequencing and timing of activities and the resources in terms of manpower, finance, and facilities the preparation of so many implementation programs is often a product of the project manager’ s failure to grasp the internal dynamics of the anizational subsystem that impact on key project decision. The project manager’ s conceptual skill is also important during the implementation of the project. The manager must be able to see, for example, how a change in the technical design or physical scope of the project will affect the budget, the schedule, the requirements set by regulatory agencies, the training requirements for operations staff, and so on. When problems arise, he or she must be able to analyze these problems form a systems wide perspective, taking into consideration the impact of each possible solution on all elements of the project. The lack of conceptual skills on the part of the project manager is a mon cause of implementation problems and sometimes of a plete failure to the