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From the angle of the traditional energy assessment, the fuzzy probability theory is applied to appraise the green energy. Firstly, the influential factors of the green energy assessment for energy project are analyzed according to China's national conditions. The factors of energy project are divided into four parts, such as absolute cost, ecological harmony, energy security and sustainability. The...
The indices system of risk review and a multi-level fuzzy synthetic evaluation model of virtual enterprise based on entropy-weighted were established. Not only make full use of the indices information. But also avoided subjective sense of weight-coefficient,and it mends the shortage of traditional synthetic evaluation methods. The practicality and reliability of the method is demonstrated in a example.
To avoid the defects of traditional mathematical approach evaluating on urban-rural continuum passenger transportation system, and the subjective interference to determine the index weight. A new fuzzy comprehensive evaluation method, combining with the improved analytic hierarchy process (IAHP) to determine the index weight, is introduced in this paper. This method can make up for the original defects,...
Optimization method with triangular fuzzy numbers is introduced to describe the expected yield rate and risk loss of securities investment, and a combinational fuzzy optimization model of inclinations with exchange fee to avoid risks is presented in this paper. The experimental results on the data investigated from real-world securities markets show that our new method exploits a new strategy for...
Water resources carrying capacity (WRCC) is an index, which reflects the supporting ability of the water resources system for sustainable society development. And it is the foundational measurement of water resources security, also it is a complex system which involves social-economic system, water resources system and ecological environment system. Pointing to the problems on vague concept about...
This paper discusses multi-period portfolio selection problem in fuzzy environment. Following Markowitz's idea of using expected return as the representative of the investment return and variance as the investment risk, we propose a fuzzy multi-period mean-variance model. The transaction cost factor is also considered in the model. In order to solve the model under fuzzy environment, we give the crisp...
In this paper, the difference of satisfactions for fuzzy yield and fuzzy risk from investors is viewed as a fuzzy number with parabolic membership function, and a fuzzy decision securities investment combination model bases on parabolic satisfaction degree is constructed with fuzzy set and fuzzy decision theories. The experimental results on real-word data show that our new approach is very efficient...
This paper discusses the problem of portfolio selection in fuzzy environment. We propose an active portfolio management approach which has practicable steps in fuzzy environment. Since Economic Value Added reflects the true value of enterprises from shareholders' perceptive, we innovatively use the management idea of Economic Value Added to select perspective securities. Then considering the intuitive...
Timely and scientific inspections and assessments of safety states are the key link to ensure the security of coalmine productions. The assessment methods directly affect the veracity and objectivity of results, and affect the overall safety management ability too. Combining the variable fuzzy set theory and the method of natural weight, a novel safety assessment model is proposed to evaluate intricate...
WPP(Wind Power Penetration) is an important indicator to ensure wind power system security. There were two types of method to calculate WPP in the past. One type of the methods which is used maximum load to calculate WPP is fast but unable to get practical result. Another type of method using stochastic simulation to calculate WPP could get practical result but is slow in calculating speed. To solve...
With the rapid development of information technology and the formation of a customer-driven market, the telecommunications industry is facing increasingly intense competition. In this paper, we look at Quality of Service (QOS) for a Telecom Customer Relationship Management (CRM) system, with the aim to set up a rating scale for it. In addition we used a sort experts set method and fuzzy comprehensive...
Using project management maturity model for reference and combining the three characteristics of high-tech venturing project- high input, high risks, and high returns- we analyze the factor of management maturity of high-tech venturing project and then construct four level maturity model of high-tech venturing project. Applying fuzzy comprehensive evaluation, we propose quantitative evaluation method...
In recent decade, DRM (digital rights management) has focused on security techniques for solving the issues as the malicious copy, free dissemination and unrestricted abuse of digital contents or assets. Whereas some increasingly enhanced security policies, which were implemented at contents provider-side or user-side, have not brought about optimal utilities for participants in the contents value...
In order to evaluate the security efficiency of the transportation system, the theory of fuzzy synthetic evaluation was used. By analyzing the capability of the transportation system, an index system for synthetic evaluation of the transportation system security efficiency was built up; the method of optimal were quoted to calculate weight modulus of index system. Through a practical example, the...
As the most valuable resource, information has become a key factor in deciding the levels of national productivity and economic growth. But there are lots of risks in the implementation. Risk assessment is an effective approach to evaluate security state of information system. In this paper a model of information system risk assessment based on its characters of incompleteness and ambiguity is presented...
In this paper, we present the first biometric identity based signature (BIO-IBS) scheme that is fully secure in the standard model. We use biometric information as the identity and construct the user's public key by using a fuzzy extractor. A biometric reading provided by the alleged signer would be enough to verify the signature. The scheme was proven fully secure based on well-exploited q-Strong...
In Internet-based e-commerce, the transaction entities' trust levels provided by e-commerce platform can be viewed as a key indicator for users selecting transaction partners. The trust of transaction entities objectively and comprehensively represents the integrated influence of various trust attributes. Aiming at uncertainty and ambiguity of trust in e-commerce, the concept of membership degree...
In the current market competition mechanism, in order to obtain business interests immoral acts take place frequently in the marketing activities, this has seriously affected the interests of consumers and society. In this paper, on the basis of the 4C theory, the target system of ethical evaluation of enterprise marketing is established from production, cost, service and communication. The fuzzy...
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...
The number of death and injury in the traffic accident is continue increasing year by year in China, which brings a great lost for social economy. In this paper we mainly studied on the data of traffic accident and follow volume in a certain section of road. And based on the theory of fuzzy mathematics and linear regulation to construct the fuzzy linear regression prediction model, and make an evaluation...
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