An interactive three-stage model for mutual funds portfolio selection

The aim of this work is to be a useful instrument for helping finance practitioners on the selection of suitable mutual fund portfolios. The portfolio selection problem is characterized by imprecision and/or vagueness inherent in the required data and more generally, in the context where investors have to make decisions. In order to mitigate these problems, a three stage model has been proposed based on a multi-index model and considering several market scenarios described in an imprecise way by an expert. The proposed fuzzy model allows the Decision Maker to select, by means of an outranking method, a suitable portfolio taking into account the uncertainty related to the market scenarios and the imprecision and/or vagueness associated with the model data.     

农副产品营养质量模糊识别与评价

本文利用模糊集理论与决策科学，结合营养学知识，建立了农副产品营养质量识别与评价体系，并对1358种农副产品进行评判，效果较好。     

L-Fuzzy拓扑群的直积

证明了任意一族Ｌ－Ｆｕｚｚｙ拓扑群的直积仍是Ｌ－Ｆｕｚｚｙ拓扑群．研究了Ｌ－Ｆｕｚｚｙ拓扑群的直积的层次结构，揭示了它与分明拓扑群的直积之间的联系     

模糊Borda法的缺陷分析及其改进思路

 通过对模糊Borda法的分析，笔者认为该方法在技术处理上偏离了评价的基本思想，根本无法实现将评价值和评价序相结合的初衷。为了实现将两者相结合的目的，本文提出了两个解决思路：利用被评价单位在评价值的差距计算相对位次；或计算名次转换值与评价值的交叉乘积。     

区域微电子技术发展实力综合评价研究

本文运用模糊数学方法,建立了多层次模糊综合评判模型。并根据实际情况选用不同算子,对中国区域微电子技术发展实力进行了综合评价,为有关部门制订微电子技术区域发展政策提供了参考。     

Methods for exploring treatment effect heterogeneity in subgroup analysis: an application to global clinical trials

Multi‐country randomised clinical trials (MRCTs) are common in the medical literature, and their interpretation has been the subject of extensive recent discussion. In many MRCTs, an evaluation of treatment effect homogeneity across countries or regions is conducted. Subgroup analysis principles require a significant test of interaction in order to claim heterogeneity of treatment effect across subgroups, such as countries in an MRCT. As clinical trials are typically underpowered for tests of interaction, overly optimistic expectations of treatment effect homogeneity can lead researchers, regulators and other stakeholders to over‐interpret apparent differences between subgroups even when heterogeneity tests are insignificant. In this paper, we consider some exploratory analysis tools to address this issue. We present three measures derived using the theory of order statistics, which can be used to understand the magnitude and the nature of the variation in treatment effects that can arise merely as an artefact of chance. These measures are not intended to replace a formal test of interaction but instead provide non‐inferential visual aids, which allow comparison of the observed and expected differences between regions or other subgroups and are a useful supplement to a formal test of interaction. We discuss how our methodology differs from recently published methods addressing the same issue. A case study of our approach is presented using data from the Study of Platelet Inhibition and Patient Outcomes (PLATO), which was a large cardiovascular MRCT that has been the subject of controversy in the literature. An R package is available that implements the proposed methods. Copyright © 2014 John Wiley & Sons, Ltd.     

模糊语言表达的语用功能及弊端

语言的模糊性并不会妨碍交际,在日常的言语交际中,往往需要大量的模糊语言。语言的模糊性不但不会影响人与人的信息交流,恰恰相反,正是词和句子的模糊性在交际中起了积极作用,才使得自然语言更具有表现力。但是,模糊语言又是一把双刃剑,在表现出它特有的语用功能的同时,如果使用不当,其弊端也是显而易见的。     

两个有限群子群指数之集相等的几个充分条件

讨论了子群指数之集的性质以及给出了两个有限群子群指数之集相等的充分条件.     

论国家软实力中的基层文化建设

基层文化建设是国家软实力建设的基础,也是国家软实力建设的主要内容。加强基层文化建设,不仅是提高群众科学文化素质、满足群众日益增长的精神需求的客观要求,也是先进文化建设和国家软实力建设的需要。     

中国劳动关系和谐度预警机制的研究

本文用AHP法、模糊评价的定量方法确定了中国劳动关系和谐度的层次结构模型和评价方法,并根据评价值用蓝灯,绿灯,黄灯,红灯对劳动关系安全域进行预警,使中国劳动关系和谐度能真正直观反应社会和谐的"风向标"。本文不只是从分析原理上进行介绍,更多的是从可操作性上进行了阐述。