Blocked-Error-R 2: A Conceptually Improved Definition of the Proportion of Explained Variance in Models Containing Loops or Correlated Residuals

Bentler and Raykov (2000, Journal of Applied Psychology 85: 125–131), and Jöreskog (1999a, http://www.ssicentral.com/lisrel/column3.htm, 1999b http://www.ssicentral. com/lisrel/column5.htm) proposed procedures for calculating R ² for dependent variables involved in loops or possessing correlated errors. This article demonstrates that Bentler and Raykov’s procedure can not be routinely interpreted as a “proportion” of explained variance, while Jöreskog’s reduced-form calculation is unnecessarily restrictive. The new blocked-error-R ² (beR ²) uses a minimal hypothetical causal intervention to resolve the variance-partitioning ambiguities created by loops and correlated errors. Hayduk (1996) discussed how stabilising feedback models – models capable of counteracting external perturbations – can result in an acceptable error variance which exceeds the variance of the dependent variable to which that error is attached. For variables included within loops, whether stabilising or not, beR ² provides the same value as Hayduk’s (1996) loop-adjusted-R ². For variables not involved in loops and not displaying correlated residuals, beR ² reports the same value as the traditional regression R ². Thus, beR ² provides a conceptualisation of the proportion of explained variance that spans both recursive and nonrecursive structural equation models. A procedure for calculating beR ² in any SEM program is provided.     

Does consumption respond to predicted increases in cash-hand availability?: Evidence from the Italian “severance pay”

We examine whether Italian household consumption exhibits excess sensitivity to “severance pay”, a sizable lump-sum that workers receive at job termination. We find no evidence of excess sensitivity of non-durable expenditure to this anticipated cash-in-hand change.     

含欧拉函数不定方程的可解性探讨

利用欧拉函数的性质及初等方法,确定了不定方程φ(x1x2…xk)=φ(x1) φ(x2) … φ(xk)(k≥2,xi∈Z,xi>1,i=1,2,…,k)的所有解.得出结论:当k=2时,它的解为x1=x2=2或x1,x2中一个为3一个为4;当k=3时,它的解为x1,x2,x3中两个为2,一个为3;当k≥4时,方程无解.     

后金融危机时代会计计量

此次百年不遇的金融危机充分暴露了现行会计公允价值计量的弊端。要使会计计量准确合理、会计信息可靠有效,必须解决资产、负债价值计量、会计计量模式选择、净资产与所有者权益关系、负债价值变动对利润的影响以及会计等式形成等问题．     

股权结构和公司绩效的联立实证研究

关于股权结构与公司绩效的研究,传统方法主要以不考虑内生性的OLS实证研究为主,近年来国内学者才逐渐运用联立方程模型研究内生性下的股权结构与公司绩效关系。股权结构具有内生性,但无论考虑内生性与否,股权集中度、股权制衡度与公司绩效之间都呈显著正向线性关系;与股权制衡度相比,股权集中度对公司绩效的影响更加显著。今后应进一步完善外部监督等公司治理机制,发挥外部股东的股权制衡作用,进而减少大股东侵害行为,提高公司价值。     

辐射迁移方程--一个K-辛空间上的正则方程

说明了均匀、轴对称、无源介质是一个K-辛空间上的Hamilton系统，Hamilton函数是系统的守恒量；数值计算辐射强度角分布的合理途径是将辐射迁移方程离散成以离散Hamilton函数为守恒量的有限维K-辛空间上的正则方程，并采用保离散Hamilton函数守恒的K-辛算法数值求解．     

城镇居民幸福指数的准确测度——兼议提升居民整体幸福水平之见解

幸福指数是一个多维度的概念,构建出一个合理、科学的指标体系非常重要。结合相关理论对城镇居民幸福指数进行研究,以调查问卷和因子分析的方法提取出幸福指数的4个层面,建立结构方程模型对幸福指数的影响因素进行分析,以结构方程模型的分析结果为基础建立幸福指数的客观指标评价体系,以真实反映出人民生活幸福的高低,以利于政府制定提高居民幸福水平的政策措施。     

文化产业竞争力研究的进展、问题与展望

20世纪80年代以后,随着国际竞争的加剧,产业竞争力成为国内外学者研究的重要课题。近年来,随着文化产业的兴起,文化产业竞争力的问题开始受到关注。目前,文化产业竞争力的研究还处于初始阶段,本文致力于在现有研究成果的基础上指出文化产业竞争力研究的不足,并提出今后的研究方向。