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With an aging underground long-distance oil/gas pipeline, ever-encroaching population and increasing oil price, the burden on pipeline agencies to efficiently prioritize and maintain the rapidly deteriorating underground utilities is increasing. Failure rate prediction is the most important part of risk assessment, and the veracity of the failure rate impacts the rationality and applicability of the...
This paper considers a facility construction problem in a rectangular urban area with some barriers and rectilinear distance. There exist some demand points and possible construction sites with preference of construction. For each site, its construction cost is a fuzzy number due to the difficulty of the exact estimation and we should decide suitable facility construction places under the condition...
The problem of hybrid multi-attribute decision making with real number, interval number and fuzzy number, is studied. First of all, the hybrid vector and the projection of hybrid vector are defined, then a new decision making method based on projection of hybrid vector is presented. Finally, an application decision making example is given to demonstrate the feasibility and rationality of this new...
The link counts are usually inaccurate under the influence of measurement and sampling errors, all kinds of adventive events and succedent data processing errors. Ignoring data inaccurateness may lead to unacceptable error of O-D matrices estimation. To make the best of the fuzzy information acquired from traffic survey, this paper presents a bi-level programming model with fuzzy expected value model...
With respect to the problem of hybrid multiple attribute decision-making with incomplete information on attribute weights to which the attribute values are given in terms of precision number, interval number and fuzzy numbers, a new method is proposed. Firstly, the three different forms of numbers are unified into the form of interval number. The operational laws of interval numbers and a formula...
In this paper, the algebraic structure for a class of point fuzzy numbers are investigated that new algebraic operations about point fuzzy numbers are presented, such that point fuzzy numbers set F(R) are F-Abel group, F-linear space, and F-commutative algebra, respectively. Example is also given to illustrate our results.
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