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We note that orthopair fuzzy subsets are such that that their membership grades are pairs of values, from the unit interval, one indicating the degree of support for membership in the fuzzy set and the other support against membership. We discuss two examples, Atanassov's classic intuitionistic sets and a second kind of intuitionistic set called Pythagorean. We note that for classic intuitionistic...
Traditionally, the methods used for constructing the confidence intervals of process capability indices(PCIs) are based on probability density function. Normally the approximate confidence intervals are obtained according to the approximate distribution since it is not easy to get the accurate sampling distribution of PCIs estimations. In this article, a methodology based on fuzzy set theory and Buckley's...
In this paper, we propose an automatic image thresholding method based on an index of fuzziness and a fuzzy similarity measure. This work aims at overcoming the limitation of the existing method which is semi-supervised. Using an index of fuzziness, two initial regions of gray levels located at the boundaries of the histogram are defined based on the fuzzy region. Then the threshold point is found...
The evaluation of the city public emergency capability is an important basis of the development of the city emergency capability. This paper made a evaluation to the eight sample cities based on the Fuzzy Set Theory. And the sample cities are choice by the three criteria such as disaster distribution, city type and geography location and so on. And they are Nanning, Harbin, Yinchuan, Shenyang, Jinan,...
According to the feature that the quality of the freight service is affected by many factors, a multi-hierarchy system is designed by analyzing the factors' feature to evaluate the service quality. In order to solve the problem, the method combined AHP and multi-hierarchy fuzzy comprehensive evaluation has been used in example and the results are satisfactory.
A comprehensive evaluation model for agriculture drought vulnerability was established based on variable fuzzy sets method combined with the index system. The multi-criterion fuzzy variable set model was applied to evaluate agriculture drought vulnerability. In the model the membership degrees and relative membership functions belonging to the ranking ranges of all indicators involved in agriculture...
Due to the increasingly serious ecological degradation of offshore systems, the study on offshore water quality health has attracted more and more attention of the researchers and decision-makers. In this paper, water quality health assessment of offshore area in north branch of the Yangtze River Estuary from July 2006 to January 2007 was studied by fuzzy comprehensive evaluation method. The water...
The traditional methods that use fuzzy comprehensive evaluation model have shortcomings in determining index weight, sometimes the evaluation results can not reflect the water quality truly and fully. In this article, the Yangtze water quality is discussed, which based on the application of unascertained comprehensive evaluation model. To begin with, the weight of index classification is determined,...
The goal of this paper is to research the evaluation method on the documents' quality of building engineering design, which included four parts mainly: introducing the system engineering of building engineering design, forming the assessment index system on quality of building engineering design and utilizing a fuzzy comprehensive evaluation method to evaluate the quality of constructing documents...
Exploring the factors that affect the Network Technology Resources Quality Evaluation, we establish index system of the network model and evaluation model for the Network Technology Resources Quality Evaluation by using hierarchical analysis, Gray and Fuzzy.
Human-machine interface (HMI) design of the main control room (MCR) can obviously affect efficiency, safety operation and control of modern power plants system. A simulation based multi-experts evaluation method for HMI design of MCR was proposed. The functional simulation models of MCR HMI have been developed based on GL Studio. Modularization thinking was used to enhance the modeling efficiency...
Evaluating the enterprise network security becomes more and more significant and important. The enterprise network security and its characteristics are introduced and analyzed. The quality evaluation system framework of enterprise network security index is established. Fuzzy evaluation index system is put forward to consider various factors. Through case study, it is concluded that comprehensive fuzzy...
Circular economy development mode is the necessary choice to change the economic growth pattern of coal enterprises in China. In this course, one of the core problems is to evaluate the effect of developing circular economy. So a three level fuzzy synthetic evaluation model is developed in this study based on establishing the hybrid evaluation indexes system. In addition, the calculating method of...
This paper introduced fuzzy assessment of water quality based on membership grade by artificial neural network. Samples were obtained by intensive interpolation of water quality standards, relative MG matrix was output as expectation value for network's train and application. Then, improved fuzzy mathematics method was applied to assess the water quality of Qingdao Dagu River.
An integrative fuzzy set pair model, established by integrating fuzzy assessment and set pair analysis, was introduced to assess the land ecological security states. The approximate degree of land ecological security to the optimal standard set was calculated to describe the security level by combining multiple indices. The indices and weights were determined by Delphi and fuzzy AHP (Analytic Hierarchy...
In view of fuzziness of university teaching quality evaluation, AHP-based multi-level fuzzy comprehensive evaluation model become the advantage model for university teaching quality assessment. However, membership conversion way at present has a problem of redundancy, that is, the redundant data which has no value to objective classification in memberships of indicators is used to calculate the objective...
The successful human resource management (HRM) is crucial for high-tech firms to maintain competitive advantages in global strategy and knowledge economy era. However, high-tech firms suffering from high turnover rates often find it hard to keep talents. This paper, drawing upon classical HRM theory, develops the risk management framework for knowledge employeespsila turnover in high-tech firms. It...
With the characteristics of complexity, uncertainty and so on, reverse logistics have many difficulties in being carried on. In order to effectively implement the reverse logistics and earn long-term economic, ecological and social benefits, this article introduces the conception of service flexibility into reverse logistics enterprises, establishes an index system of service flexibility of reverse...
In recent years, governments take more attention on the regional logistics industry. But the regional logistics plan is very difficult to implement, because it lacks the scientific and effective evaluation on current situation of the regional logistics environment. This paper designs the following indexes, including logistics line, logistics center construction, logistics information platform construction,...
The optimal route guidance, is an important part of ITS. The factors influencing route guidance, such as the position of vehicles, the information on road conditions, the free parking spaces, etc., are dynamically variable. These dynamically factors are constrained conditions. How to construct the optimal model of vehicle route guidance under such constrained conditions is a difficulty that puzzles...
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