乡村规划建设中中心村选择的ROG模型研究——以鄂东平原地区为例

中心村作为农村居民集聚点及周边自然村服务中心,在建设美丽乡村、科学安排乡村用地布局,引导农村产业化和实现城乡一体化发展等方面具有不可替代的作用。但在乡村规划建设工作实践中,政府决策与管理人员、规划设计人员、乡村干部与群众对于中心村选择往往感到无所适从。[目的]文章通过构建中心村选择的ROG模型,科学合理选择中心村。[方法]以公众参与规划理论、空间相互作用理论等为理论基础,以鄂东平原地区乡村规划编制与管理为实践基础,采用因子分析方法,提取影响中心村选择的主要因子,构建村庄质量模型(M)与总相互作用力模型(G)。然后结合住区选址限制性条件(R)与村民意愿(O),构建中心村选择的ROG模型,并进行典型例证。[结果]用ROG模型计算各自然村的ROG数据,选择ROG数据最大的自然村为中心村。[结论]该模型可减少中心村选择的盲目性与主观性,实现中心村选择的科学合理性与可操作性,为实际工作提供直接指导。     

模糊识别在工程造价估算中的应用

探讨了模糊识别在工程造价估算中的应用,重点就模式库的建立和模式匹配与估算,建立了相应的模糊聚类、模糊贴近度、指数平滑等应用模型,并通过实例对模糊识别的过程进行了计算说明。     

关于企业文化建设的思考

本文介绍了企业文化的主要特点,提出了企业文化建设的主要途径,指出了人们对企业文化内涵理解的误区。     

Portfolio performance gauging in discrete time using a Luenberger productivity indicator

This paper proposes a pragmatic, discrete time indicator to gauge the performance of portfolios over time. Integrating the shortage function (Luenberger, 1995) into a Luenberger portfolio productivity indicator (Chambers, 2002), this study estimates the changes in the relative positions of portfolios with respect to the traditional Markowitz mean-variance efficient frontier, as well as the eventual shifts of this frontier over time. Based on the analysis of local changes relative to these mean-variance and higher moment (in casu, mean-variance-skewness and mean-variance-skewness-kurtosis) frontiers, this methodology allows to neatly separate between on the one hand performance changes due to portfolio strategies and on the other hand performance changes due to the market evolution. This methodology is empirically illustrated using a mimicking portfolio approach (22 and 23) using US monthly data from January 1931 to August 2007.     

与时俱进 遵循规律 坚持创新

如何在世纪之初的新形势下切实地贯彻“三个代表”思想,做好行业协会工作,中电联常务副理事长刘宏在山西调研时就此提出自己的见解,现予摘登,以飨读者。     

基于Web方式的电工学网上考试系统的研究

我们应用APS开发基于Web方式的电工学网上考试系统由管理员、出卷教师、普通教师、学生考试 4个平台组成 ,采用半自动成卷方式进行     

关于"壳资源"若干问题的探讨

本文主要分析了上市公司“壳资源”的内涵、特性、制度成因及其价值的确定,指出作为一种制度衍生物,“壳资源”的开发和利用有赖于整个制度创新和技术创新体系的建设。     

模糊自动控制理论在高速公路机电设备中的应用

文章介绍了在直流并励电动机控制中引进模糊自动控制,可以实现电动机恒流起动、恒速运行,降低电机的故障率,保障它的运行。     

建立科学的城市可持续发展指标体系

建立一种能综合地、完整地体现城市可持续发展的指标体系,是一项极具挑战意义的工作.本文在对国内外现有的可持续发展指标体系进行梳理的基础上,探讨了构建城市可持续发展指标体系的基本原则,提出了新的城市可持续发展评价指标体系.     

Forecasting another’s enjoyment versus giving the right answer: Trust, shared values, task effects, and confidence in improving the acceptance of advice

In two experiments, participants received advice from another participant on a task either with a correct answer (intellective tasks) or without a correct answer (judgmental task), in which the participant had to make a forecast. In both experiments, the level of trust in the advisor and a perception of the advisor having similar values were important predictors of the acceptance of advice for a judgmental, taste forecast task, whereas advisor confidence was a more important predictor of the acceptance of advice on the intellective task. In Experiment 2, the face-to-face interactions between the decision-maker and the advisor were videotaped and coded. Advisors provided more information to decision-makers for the taste forecast than for the intellective task. Further, whether the advisor provided information to supplement their recommendation or not was a significant predictor of the acceptance of advice on the taste forecast, but not on the intellective task. The results are discussed in the context of previous research on advice, which has predominately used intellective tasks.