模糊层次分析法在B2C网购中的应用

信息网络技术的不断发展使网购逐渐成为人们购买物品的方式之一,但是网上信息的真实与否也带来了购物烦恼.通过调查问卷和已有文献,分析了消费者在商家对顾客模式(B2C)网站上购物时主要考虑的影响因素指标,用模糊层次分析(Fuzzy-AHP)法对这些指标进行了评价分析,从而把模糊的信息指标量化.研究结果以直观的评价结果为消费者网购提供了参考.     

A fuzzy reasoning and fuzzy-analytical hierarchy process based approach to the process of railway risk information: A railway risk management system

Risk management is becoming increasingly important for railway companies in order to safeguard their passengers and employees while improving safety and reducing maintenance costs. However, in many circumstances, the application of probabilistic risk analysis tools may not give satisfactory results because the risk data are incomplete or there is a high level of uncertainty involved in the risk data. This article presents the development of a risk management system for railway risk analysis using fuzzy reasoning approach and fuzzy analytical hierarchy decision making process. In the system, fuzzy reasoning approach (FRA) is employed to estimate the risk level of each hazardous event in terms of failure frequency, consequence severity and consequence probability. This allows imprecision or approximate information in the risk analysis process. Fuzzy analytical hierarchy process (fuzzy-AHP) technique is then incorporated into the risk model to use its advantage in determining the relative importance of the risk contributions so that the risk assessment can be progressed from hazardous event level to hazard group level and finally to railway system level. This risk assessment system can evaluate both qualitative and quantitative risk data and information associated with a railway system effectively and efficiently, which will provide railway risk analysts, managers and engineers with a method and tool to improve their safety management of railway systems and set safety standards. A case study on risk assessment of shunting at Hammersmith depot is used to illustrate the application of the proposed risk assessment system.     

Seismic microzonation and building vulnerability assessment based on site characteristic and geotechnical parameters by use of Fuzzy-AHP model (a case study for Kermanshah city)

ABSTRACT

On 12th November 2017, an earthquake with a magnitude of 7.3 Richter scale in the town of Sarpol-e Zahab took place that caused lots of human casualties and devastation. After the incident, issues related to the probability of an earthquake with equal intensity and extents of similar building destruction were raised in Kermanshah city. Therefore, a seismic microzonation map of Kermanshah city has been prepared based on the geotechnical, geological, and geophysical data, and the data were analysed using Fuzzy analytic hierarchy process (AHP). In the next step, the vulnerability analysis of city buildings was carried out based on the ground-shaking map, vulnerability curves, and statistical data regarding the buildings. The results of the vulnerability rate of residential buildings indicate that 80% of residential buildings would be exposed to vulnerability from low to moderate. However, other buildings would suffer 2% fully destruction (D1), 7% very high destruction (D2) and 11% high destruction (D3), respectively. Finally, according to the obtained results, the proposed model is verified with the help of the data and observations from the Sarpol-e Zahab earthquake, which reveals that the model is in good agreement with the actual earthquake data.     

Application of fuzzy-analytic hierarchy process algorithm and fuzzy load profile for load shedding in power systems

In an electrical competitive market, load shedding decision support systems are needed to find the ways to process load shedding to satisfy both economic and technical conditions. This paper proposed the Fuzzy Analytic Hierarchy Process algorithm (Fuzzy-AHP) and fuzzy logic for load profile approach to determine the weight of the load nodes of the system and select the control strategy when the system operates at various load levels. Weights of the load nodes were calculated by triangular fuzzy numbers in the pair comparison. These results combined with the fuzzy logic for load profile to draw out the suitable control strategies for various load levels in case of emergency. The effectiveness of the algorithm was demonstrated through the experiment of load shedding of IEEE 37 bus compared with traditional AHP algorithm.     

基于Fuzzy-AHP的输变电工程造价管理综合评价模型研究

针对我国当前的输变电工程造价管理模式,利用专家评价法和层次分析法,分析造价关键影响因素,构建出综合评价指标体系;运用 Fuzzy-AHP 方法,结合综合评价指标体系,建立了输变电工程造价管理模糊层次评价模型;最后以山西省某输变电工程为例,对模型进行验证。结果表明,该评价模型评价结果符合工程实际,可为相关部门提供决策参考。     

航空信息系统安全评价指标体系

论文提出了一种基于安全系统工程理论[1]的航空信息系统安全评价指标体系,结合动态控制方法,从战略、技术、管理、工程四个角度评价航空信息系统的安全。首先建立了一个航空信息系统安全评价指标体系,其次采用模糊层次分析法,对系统的静态指标部分进行了安全评估,得到了较好的评估结果。     

Computer-aided maintenance management systems selection based on a fuzzy AHP approach

Computerized maintenance management systems (CMMS) are common in today’s industries. CMMS can bring a large number of benefits, which include increased productivity, reduced costs, and effective utilization of the assets in any manufacturing and service producer. The list of CMMS that are available in the market has grown very rapidly during the last years. When purchasing a system, one that suits the specific needs and objectives of the company’s maintenance operations should be preferred. Several selection methods were proposed in literature. Up to now, no article has considered ambiguity and uncertainty factors when selecting effective CMMS. In addition, CMMS selection decisions involve the simultaneous consideration of multiple criteria, including tangible and intangible factors; prioritizing these factors can be a great challenge and a complex task. Therefore, no attempt has been made to incorporate fuzziness into multicriteria decision-making in the area of CMMS selection. This work proposes a fuzzy-based methodology for comparative evaluation of a number of CMMS alternatives. The proposal is based on the well-known multicriteria decision method called Analytical Hierarchy Process (AHP) with triangular numbers. An example is given to illustrate the proposed methodology. Finally, a software prototype for implementing this method was implemented. To illustrate and validate the proposed approach and the software prototype developed some details are presented and discussed.     

基于Fuzzy-AHP的输变电工程造价管理综合评价模型研究

针对我国当前的输变电工程造价管理模式,利用专家评价法和层次分析法,分析造价关键影响因素,构建出综合评价指标体系;运用 Fuzzy-AHP 方法,结合综合评价指标体系,建立了输变电工程造价管理模糊层次评价模型;最后以山西省某输变电工程为例,对模型进行验证。结果表明,该评价模型评价结果符合工程实际,可为相关部门提供决策参考。     

C3I系统安全评估方法与指标体系研究

基于模糊层次分析法的C3I系统安全评估模型,先从实体与环境、组织与管理制度、网络层、系统、用户、指控软件和数据的安全性7方面建立安全评估指标体系.接着计算各层指标权重,对底层进行测量及形成待评方案,并进行指标规范化,再建立评价集.最后根据最底层各指标的隶属度建立模糊矩阵,计算综合评判结果,由此实现模糊层次分析算法.     

虚拟物流组织伙伴选择与优化方法研究

在对已有的虚拟企业伙伴选择方法分析的基础上,提出了虚拟物流组织组建过程的三阶段结构化模型,并在该模型中提出了定性筛选与按核心能力定量分类相结合的初选方法,设计和改进了利用模糊层次分析法确定权重向量的数学模犁,提出了采用基准研究法确定抽象因素指标值的方法,给出了综合评估虚拟物流组织整体运行绩效的理论模型,最后,结合典型算例说明了该模型和算法的可操作性和有效性.