一种基于TOPSIS的多属性决策方法研究

文章给出了一种基于TOPSIS的多属性决策方法,并通过实例检验了该方法的有效性。     

德国公司治理模式存在的问题与改革

经济全球化尤其是欧盟一体化进程加快、放松管制与竞争加剧导致德国从90年代开始推行公司治理改革。但由于制度刚性和路径依赖,德国公司治理模式的转变显然是渐进的且不会完全转向英美模式。本文对传统德国公司治理模式的特点,存在的问题和改革措施进行了分析。     

The Choice of Methodology for Computing Housing Price Indexes: Comparisons of Temporal Aggregation and Sample Definition

Housing transactions are executed and recorded daily, but are routinely pooled into longer time periods for the measurement and analysis of housing price trends. We utilize an unusually rich data set, covering essentially all arm's length housing sales in Sweden for a dozen years, in an attempt to understand the effect of temporal aggregation upon estimates of housing prices and their volatilities. This rich data set also provides a unique opportunity to compare the results using the conventional weighted repeat sales model (WRS) to those based on a research strategy which incorporates all available information on house sales. The results indicate the clear importance of temporal disaggregation in the estimation of housing prices and volatilities—regardless of the model employed.The appropriately disaggregated model is then used as a benchmark to compare estimates of the course of housing prices produced by the two models during the twelve year period 1981–1993. These results indicate that much of the difference between estimates of price movements can be attributed to the data limitations which are inherent in the repeat sales approach. The results, thus, suggest caution in the interpretation of government-produced price indices or those produced by private firms based on the repeated sales model.     

基于AHP-TOPSIS的城市轨道交通应急演练评估研究

为提升演练质量与效果,阐述城市轨道交通应急演练现状,在构建大客流综合处置演练评估指标体系的基础上,将层次分析法AHP与TOPSIS法两者有机结合,建立城市轨道交通应急演练评估模型,以城市轨道交通大客流综合处置演练为例,从协调指挥、信息传递、关键流程控制、运营恢复4个方面综合考虑影响演练效果的评估因素。通过层次分析法得出各指标权重值,采用TOPSIS法进行计算排序,针对参演各班组的演练情况进行排序,实现对城市轨道交通大客流演练的评估。经过实例验证表明,AHP-TOPSIS模型具有良好的适应性与合理性,对各种类型的应急演练评估有很好的应用价值。     

基于熵权TOPSIS的农村饮用水取水模式评价

以陕西省渭南地区富平县农村饮用水为研究对象,根据该地区特殊的地理位置和可选的3种取水模式,构建了取水模式评价指标体系,提出基于熵权TOPSIS的取水模式评价方法。研究结果表明,评价指标体系和评价方法具有一定的有效性,评价结果符合当地特征,可供地区政府决策时参考。     

一种新的八参数轴对称组合杂交元的优化方法

组合杂交变分原理中的组合参数的选取是一个难点．基于遗传算法的思想,为能量协调轴对称元组合参数的选取提供了一个方法．数值算例结果表明,这样改进后得到的轴对称元各方面性能很好,数值结果几乎接近精确值．     

Application of Fuzzy Benchmarking Approach for Strategic Planning of Tourism Destination

The quality of strategic planning and resulting strategies is a key factor for the competitiveness of tourism destinations. Even though this is not a typical field where benchmarking methods are widely used, such an approach can be successfully applied. This article drafts a methodology for strategic benchmarking based on a quality evaluation of development strategies in tourism destinations. These strategies are evaluated by key regional stakeholders. The evaluation of fifteen selected strategies of the Czech, Slovak, and British regions has been made by an on-line application incorporating carefully defined criteria designed to operate with fuzzy data. The best strategies—as an etalon of good practice—are selected by the means of the fuzzy Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) method. The Region of Vysocina was selected for realization of the benchmarking gap analysis towards all strategies from the etalon with the aim to identify the opportunities for quality enhancement and corresponding good practices.     

基于字典学习的毫米波大规模MIMO系统混合预编码

针对毫米波大规模多输入多输出（MIMO）系统混合预编码方案设计的难题,采用字典学习的思想,提出了一种高精度混合预编码方案。该方案首先对全数字预编码矩阵的各列采用稀疏表示;进而按列将字典原子从稀疏表示中分离出来,通过对误差矩阵采用奇异值分解（SVD）来更新对应的字典原子,直到所有字典原子更新,以形成新的字典矩阵;最后,利用更新后的字典矩阵稀疏重构全数字预编码矩阵,以得到模拟预编码矩阵和数字预编码矩阵。仿真结果表明,相较于基于正交匹配追踪（OMP）的混合预编码方案,所提方案在提升系统频谱效率和降低误码率方面具有明显的优势。     

种植业农户专业化指标体系构建及水平测度*——以张掖市为例

[目的]农业专业化的发展已逐渐成为我国农业生产发展的趋势,而微观农户专业化作为农业专业化发展的首要任务,系统构建其指标体系、量化其发展水平尤为重要。[方法]文章以农业发展较为发达的甘肃省张掖市为研究区域,在获得大量问卷调查数据的基础上,基于组织内部分工、横向分工以及纵向分工视角,从农户家庭内部分工专业化、农产品专业化和生产经营环节专业化3方面构建了现阶段种植业农户专业化评价指标体系,并采用SEM-TOPSIS模型对样本区种植业农户专业化水平进行测度分类。[结果]虽然样本区农户专业化分工水平是低下的,但受农业产业领域分工的影响,绝大多数样本区种植业农户在不同程度存在明显的分工专业化。[结论]当前阶段下,样本区种植业农户专业化发展呈现出农户家庭多种分工形式并存、农产品多样化种植普遍存在以及生产经营社会化服务需求巨大的特征。     

多属性决策模型在农用地重点整治项目选址中的应用

土地整治工作中,整治选址问题涉及到的影响因素较多,且属性复杂,选址方法应向科学、快速、实用性强的方向进行研究。将空间分析与TOPSIS法相结合建立多属性决策模型,并选择了合理的指标体系,对研究区农用地重点整治项目进行选址。最终,从沈阳市的125个乡镇中快速、直观、科学地选择了兴隆镇为重点整治项目实施区,且数据结果方便其他相关部门使用,希望模型可以推广用于解决土地整治工作中的选址问题。