توضیحات
ABSTRACT
A plant construction project always involves lots of activities. Precise information about the activities duration is unfortunately unavailable due to the uncertain resources capacity. The fuzzy program evaluation and review technique (PERT) has been widely applied to solve the fuzzy project scheduling problem. This paper presents an
extended fuzzy PERT approach with four major improvement aspects to support the construction project scheduling management: 1) Evaluate operation fuzzy times based on available working volumes, resources quantity and fuzzy capacity of resources, 2) Adopting a maximal ? i ? levelcut method to compare the fuzzy precedent activities times to determine the reasonable earliest starting times of each activity, 3) Using fuzzy algebra method instead of fuzzy subtraction method to compute the fuzzy latest starting times and 4) Developing a project scheduling risk index (PSRI) to assist the decision maker to evaluate the project scheduling risk. Simulations experiments are conducted and demonstrated satisfactory results.
INTRODUCTION
The plant construction project scheduling is not easy to handle due to various uncertain factors. For example the resources capacity is an important uncertain. Its uncertainty will impact the project scheduling. In industrial practice the decision makers usually use crisp value to estimate the project time while they bid a potential project. But when they get the orders or contracts, frequently they can’t complete construction on time and the resulting cost always exceeds original expectations. How to evaluate the construction project scheduling risk is an important problem.
Year: 2009
Publisher: JIEM
By: Hsian Jong Hsiau; Chun Wei R.Lin
File information: English Language / 17 Page / Size : 1/351 Kb
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سال:2009
ناشر: JIEM
کاری از: Hsian Jong Hsiau; Chun Wei R.Lin
اطلاعات فایل: زبان انگلیسی/ 17 صفحه/ حجم 1/351 کیلوبایت
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