Current Issue : July - September Volume : 2014 Issue Number : 3 Articles : 7 Articles
Today green supply chain is considered all around the world and supplier selection has been changed regarding these green and\r\ncarbon emission criteria, so green supplier selection has been amajor problem in this area. In this study we use fuzzy time function\r\nto assist managers in green supplier selection under uncertainty and ambiguity. This function will consider derivation from the\r\ngoal during the time and by using it, and we will be able to have the best supplier in every period after having some modification in\r\nlegal limitations for green supplier selection criteria.We use a fuzzy TOPSIS to have better initial weighting in TODIM, a discrete\r\nmulticriteria method based on prospect theory in uncertainty (known as TODIM in Portuguese) decision making method. The\r\nresults indicated that our proposed approach can easily and effectively accommodate criteria with gains and loss functions during\r\ntime and also by using this method we will have a more reasonable predict of our suppliers ranking in future and that will help us\r\nin future investment in these suppliers. Finally it has been shown in car industries in Iran....
In today�s increasingly competitive market, consumers usually have to face a huge number of products with different designs\nbut having the same use. Therefore, an important problem for manufacturers is to attract consumers by special designs of the\nproducts. This paper aims at the improvement of a consumer-oriented approach in recommending products, and proposing\na recommendation system for Japanese traditional crafts based on target-oriented fuzzy method and ontological engineering.\nSpecifically, a target-oriented fuzzy method is used for measuring the fitness of a selected attribute to a certain object. Two\naggregation models for dealing with a multiattribute evaluation and ranking are introduced; four ranking methods are also\nexamined for getting a recommendation list. To test the aggregation models and the ranking methods, a recommendation system\nwas developed and a comparison test was conducted....
This paper presents an extended analytical approach to evaluating continuous, monotonic functions of independent fuzzy numbers.\nThe approach is based on a parametric a-cut representation of fuzzy numbers and allows for the inclusion of parameter uncertainties\ninto mathematical models....
Buckley�s approach (Buckley (2004), (2005), (2006)) uses sets of confidence intervals by taking into consideration both of the\nuncertainty and impreciseness of concepts that produce triangular shaped fuzzy numbers for the estimator. This approach produces\nfuzzy test statistics and fuzzy critical values in hypothesis testing. In addition, the sample size is fixed for this test.When data comes\nsequentially, however, it is not suitable to study with a fixed sample size test. In such cases, sequential and group sequential tests are\nrecommended. Unlike a sequential test, a group of sequential test provides substantial savings in sample and enables us to make\ndecisions as early as possible. This intends paper to combine the benefits of group sequential test and Buckley�s approach using\na-cuts. It attempts to show that using ??-cuts can be used within the group sequential tests. To illustrate the test more explicitly a\nnumerical example is also given....
Image reconstruction technique based on F-transform uses clearly defined basic functions. These functions have strong impact on\nthe quality of reconstruction. We can use some predefined shape and radius, but also we can create a new one from the scratch.\nThe aim of this paper is to analyze the creating process and based on that find best basic function for input set of damaged testing\nimages....
We apply the concept of Fuzzy Transform (for short, F-transform) for improving the results of the image matching based on the\r\nGreatest Eigen Fuzzy Set (for short, GEFS) with respect tomax-min composition and the Smallest Eigen Fuzzy Set (for short, SEFS)\r\nwith respect to min-max composition already studied in the literature.The direct F-transform of an image can be compared with\r\nthe direct F-transform of a sample image to be matched and we use suitable indexes to measure the grade of similarity between the\r\ntwo images.We make our experiments on the image dataset extracted from the well-known Prima Project View Sphere Database,\r\ncomparing the results obtained with this method with that one based on the GEFS and SEFS. Other experiments are performed on\r\nframes of videos extracted from the Ohio State University dataset....
We introduce and develop the initial theory of vague soft hyperalgebra by introducing the novel concept of vague soft hypergroups,\nvague soft subhypergroups, and vague soft hypergroup homomorphism. The properties and structural characteristics of these\nconcepts are also studied and discussed....
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