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11.
蔬菜供应链的基础上,借助于熵权与相关系数矩阵的TOPSIS法相结合的供应商评价模型。首先构建供应商的评价指标体系,然后采用熵权法得到各指标的权重,再结合实例验证该模型的可行性。结果表明该模型能够更客观地对蔬菜供应商的选择进行有效评估。 相似文献
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通过比较和分析既有文献,构建了供应链节点企业协调度评价指标体系;然后,运用直觉模糊集和直觉模糊数,依据TOPSIS方法,选择并确定了直觉模糊集的相似度函数,用信息熵计算权重;最后,对已确定的直觉模糊集到直觉模糊正理想点(PIS)和负理想点(NIS)的距离加权,得出各待评价方案与理想点的相对贴近度,即所述的供应链节点企业的协调度。 相似文献
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经济的全球化和信息的迅速发展为企业的国际化经营创造了良好的条件。企业的国际化经营又在很大程度上依赖于国际市场进入的模式。基于国际市场进入模式对于企业经营发展的重要性,本文分析了国际市场进入模式的主要影响因素,并在此基础上构建一个较为全面的国际市场进入模式综合决策模型。在具体操作层面上,拟采用模糊数学的工具提出国际市场进入模式的识别模式,为企业的国际化经营的实施提供战略指导。 相似文献
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安徽省的高质量发展水平测度对本省经济高质量发展有重要的实践意义,同时对其他省市的高质量发展有着重要的借鉴意义.本文在新发展理念的引领下,从创新驱动发展、区域协调发展、绿色发展、发展成果共享四个维度建立了综合的评价指标体系,利用熵权TOPSIS法进行赋权排序,对安徽省16个地级市的高质量发展水平进行了测度.在对得分进行分... 相似文献
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Evaldo Costa Julia Seixas Gustavo Costa Thomas Turrentine 《International Journal of Sustainable Transportation》2017,11(7):518-525
The Brazilian cities as well as many of the large urban centers in the world continue to expand, increasing the demand for mobility and transport, while, at the same time, the same cities are investing in greenhouse gas (GHG) mitigation to avoid climate change. Brazil's urbanization rate increased from 26% in 1940 to almost 70% in 1980. During this period, the Brazilian population tripled and the urban population multiplied by seven. In 2010, the transport sector in São Paulo accounted for 71% of the total emissions released by the energy sector. Ethanol has been considered a fuel with less greenhouse gas emissions, when compared with fossil fuels. However, ethanol production would have to double to meet the expected demand. Electric vehicles (EVs) market is expanding around the world, and is also an option to reduce the transport emissions, if powered by clean electricity. To assess whether the adoption of EVs might bring more benefits than the current ethanol, we develop prospective scenarios supported by the Long-range Energy Alternatives Planning (LEAP) simulation tool, taking a bottom-up tank-to-wheel approach to consider the CO2 emissions of car in São Paulo. The scenario considering a substitution of 25% of gasoline-powered cars by EV in 2030 showed a reduction in energy consumption and CO2 emissions, around 15% and 26% respectively in that year in comparison with 2015. We discuss the interplay between ethanol and EV, also considering emission coefficients from life cycle analysis conducted in Brazil, and concluded EV will have higher positive impact on climate change mitigation than ethanol. 相似文献
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Juan Carlos Martín Concepción Román Clara Gonzaga 《Journal of Convention & Event Tourism》2017,18(1):1-25
This article aims to evaluate the service quality experienced at academic conferences held at the Universidad Técnica Particular de Loja in Ecuador. Our approach is based on fuzzy logic and ideal solutions to calculate a global attendee satisfaction index for specific market segments: Gender, nationality, and age. Current literature on the service quality experienced by conference attendees is still scarce. Our results show that the analyzed segments experience varying levels of satisfaction, and that the more influential attributes to each of them are also different. Our results can be applied to improve the competitiveness of Loja and that of Universidad Técnica Particular de Loja. 相似文献
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Jen-Hung Huang 《Tourism Management》2012,33(2):456-465
This study proposes a novel approach, the Fuzzy Rasch model, which combines Item Response Theory (IRT) and fuzzy set theory. This paper applies the Fuzzy Rasch model in Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) to analyse the Tourism Destination Competitiveness (TDC) of nine Asian countries: China, Hong Kong, Japan, Korea, Malaysia, Singapore, Taiwan, Thailand and the Philippines. The study was conducted in 2009 using 6 criteria and 15 indices. The results demonstrate the feasibility of applying the Fuzzy Rasch model in TOPSIS to analyse TDC in Asian countries. In addition, the proposed model also provides an effective means of applying the MCDM method to study TDC. Furthermore, in 2009, the Asian countries were ranked from most to least competitive as follows: China, Japan, Hong Kong, Malaysia, Thailand, Singapore, Taiwan, Korea and the Philippines. 相似文献
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由于信息不对称或者有些投资项目本身没有先例可循,企业投资项目存在很大风险.为了较全面地考察项目投资所面临的各种因素,作出合理的项目投资决策,采用多属性决策中确定属性权重的熵权法联合决策者对属性重要性认识的主观权重和用于排序比较的TOPSIS法,为企业投资项目的比选决策提供一种新的决策方法.该方法综合考虑了决策者的主观权重和投资项目各影响因素信息之间固有的客观权重、综合考虑了风险和收益的多方面因素对投资项目作出比选决策.最后举一项目投资比选实例加以说明. 相似文献