“双轨水利”:农村水利运行机制的文化人类学研究——以广西S村为例

从费孝通对乡土中国的双轨政治概念出发,通过对农村水利发展历史的梳理,探寻出农村水利机制运行规律的两条道路——双轨水利,并指出推行水利社区化是对以往民间水治道路的恢复与重构,同时也是作为消弥当下农村水利困境的有效途径。     

A Bayesian hierarchical approach to dual response surface modelling

In modern quality engineering, dual response surface methodology is a powerful tool to model an industrial process by using both the mean and the standard deviation of the measurements as the responses. The least squares method in regression is often used to estimate the coefficients in the mean and standard deviation models, and various decision criteria are proposed by researchers to find the optimal conditions. Based on the inherent hierarchical structure of the dual response problems, we propose a Bayesian hierarchical approach to model dual response surfaces. Such an approach is compared with two frequentist least squares methods by using two real data sets and simulated data.     

Model selection using information criteria under a new estimation method: least squares ratio

In this study, we evaluate several forms of both Akaike-type and Information Complexity (ICOMP)-type information criteria, in the context of selecting an optimal subset least squares ratio (LSR) regression model. Our simulation studies are designed to mimic many characteristics present in real data – heavy tails, multicollinearity, redundant variables, and completely unnecessary variables. Our findings are that LSR in conjunction with one of the ICOMP criteria is very good at selecting the true model. Finally, we apply these methods to the familiar body fat data set.     

Topics on Dynamic Panel Data Models with Random Effects Using Semi-Parametric Bayesian Approach

A common assumption in fitting panel data models is normality of stochastic subject effects. This can be extremely restrictive, making vague most potential features of true distributions. The objective of this article is to propose a modeling strategy, from a semi-parametric Bayesian perspective, to specify a flexible distribution for the random effects in dynamic panel data models. This is addressed here by assuming the Dirichlet process mixture model to introduce Dirichlet process prior for the random-effects distribution. We address the role of initial conditions in dynamic processes, emphasizing on joint modeling of start-up and subsequent responses. We adopt Gibbs sampling techniques to approximate posterior estimates. These important topics are illustrated by a simulation study and also by testing hypothetical models in two empirical contexts drawn from economic studies. We use modified versions of information criteria to compare the fitted models.     

基于利他属性的双渠道供应链研究

针对电子渠道和传统零售渠道之间复杂的关系,本文构建了一个基于利他属性的双渠道供应链模型,探讨了渠道替代率和利他属性对模型的影响。首先,分析集中决策模型,给出了均衡解和供应链的最优收益,结果表明渠道替代率越高,供应链的最优收益越低;然后,在分散决策模型中,采用斯坦格尔伯格博弈的方法,探讨渠道替代率对决策变量和目标函数的影响,并研究利他属性与渠道效率的关系,结果表明利他属性的存在有助于提高供应链的渠道效率。在此基础上,讨论了供应链模型的帕累托改进区间,给出了获取改进区间的条件。最后,通过数值分析,揭示了利他属性与供应商和零售商收益的关系。     

公司经理和经理权的双重性

公司制度的发展经历了由最初的"股东会中心主义"到确立"董事会中心主义".并随着经济的发展在提高经营效率的压力下,爆发了一场意义重大的"经理革命",专业经理取代公司所有者成为决策者,其权力大大增加.与此同时也产生了经理层权力过多,损害公司以及所有者利益的问题.公司经理的法律地位、性质以及经理权能的范围界定不清,是产生这些问题的根本原因,因此有必要对公司经理的身份、权能做清晰的界定,防止公司运行过程中权力膨胀和权力缺失现象的发生,使公司利益和所有者(股东)的利益得到相应保护.     

Inference after separated hypotheses testing: an empirical investigation for linear models

Model selection problems arise while constructing unbiased or asymptotically unbiased estimators of measures known as discrepancies to find the best model. Most of the usual criteria are based on goodness-of-fit and parsimony. They aim to maximize a transformed version of likelihood. For linear regression models with normally distributed error, the situation is less clear when two models are equivalent: are they close to or far from the unknown true model? In this work, based on stochastic simulation and parametric simulation, we study the results of Vuong's test, Cox's test, Akaike's information criterion, Bayesian information criterion, Kullback information criterion and bias corrected Kullback information criterion and the ability of these tests to discriminate between non-nested linear models.     

不同价格模式下的双渠道供应链决策研究

针对由直销渠道和传统零售渠道组成的供应链,考虑需求同时受价格和广告投入影响的情况下供应链的最优决策问题。分别讨论由零售商决定渠道价格的价格一致模式和制造商与零售商分别决定渠道价格的价格非一致模式下的Stackelberg博弈模型,并研究在价格非一致模式下合作广告对决策的影响。最后算例分析将两种价格模式与集中决策模式下的最优决策值及供应链总收益进行比较。分析结果表明,对于制造商和整个双渠道供应链而言,采用价格非一致模式优于价格一致的模式。对于零售商而言,在一定条件下价格一致模式对自己有利。     

城市包容性发展与中国新型城市化

论文基于包容性发展及城市化战略转型的背景,探讨包容性发展主旋律下中国新型城市化问题。论文系统梳理了国内外相关研究成果,探究了我国城市选择包容性发展的根源,并在此基础上从发展理念、空间形态、社会整合、经济融合、制度重构等几方面提出中国城市包容性发展战略及城市化路径选择。     

构建跨文化传播的伦理规范——以中国香港与大陆一起文化冲突事件为例

摘 自香港回归以来,大陆与香港同胞的交流合作愈加紧密。但由于文化的差异,交际中难免产生误解。加上大众媒体在传播中缺乏伦理导向、对两地文化缺乏深入理解,更容易激发矛盾。文章以哈贝马斯的交往行为理论为框架,并结合跨文化交际学和传播学的理论指导,分析2012年初发生的一起两地文化冲突事件,提倡在“建立共识、促进改变和巩固社会的公众空间”中理性交流,并在宏观文化层面确立一种具有多元化、开放性和主体间性的跨文化伦理。