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  • 1 University of Debrecen, Kassai u. 26, H-4028 Debrecen, Hungary
  • 2 University of Debrecen Faculty of Engineering, Ótemető u. 2-4, H-4028 Debrecen, Hungary
Open access

Generally, engineering projects are getting bigger and bigger and more complex to handle. Due to the developments of information technology, managers have the opportunity to plan the execution of their projects and calculate the critical paths of those projects precisely, regardless of the types and sizes of their projects. However, these indicators are not realistic; in many cases the predetermined partial-deadlines cannot be kept, therefore the end of the project must be postponed. The aim of the research is to modify the inputs of the critical path method with the application of fuzzy values. The use of fuzzy values in business planning can support project managers in building the uncertainty factor into their model.

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