对成都市在“城乡一体化”改革中创新突破的调查和研究

城乡统筹发展的实质就是要协调城市与乡村的各类要素资源,打破城、镇、乡、村的脱节和工业与农业发展不平衡的格局,实现以城乡一体化为目标、以改革创新为核心、以群众利益最大化为宗旨、以市场化为动力、以政策为保障的城乡和谐与可持续发展。     

正常商品的替代效应与收入效应研究

目前,国内外的微观经济学教科书中,关于正常商品的替代效应和收入效应的图形说明很不一致。主要是关于正常商品降价后新的预算线上的均衡点和原始预算线上的均衡点的位置不同。为此,在给定消费者效用函数和预算线方程的基础上,通过对正常商品降价(涨价)后带来的总效应、替代效应以及收入效应进行数理分析,使人们达到完整准确地理解和掌握正常商品的替代效应和收入效应的目的。     

Income inequality,poverty and crime across nations

We examine the relationship between income inequality, poverty, and different types of crime. Our results are consistent with recent research in showing that inequality is unrelated to homicide rates when poverty is controlled. In our multi‐level analyses of the International Crime Victimization Survey we find that inequality is unrelated to assault, robbery, burglary, and theft when poverty is controlled. We argue that there are also theoretical reasons to doubt that the level of income inequality of a country affects the likelihood of criminal behaviour.     

Parental income and the fruits of labor: Variability in homework efficacy in secondary school

Research in the sociology of education has shown that noncognitive traits are important predictors of educational outcomes and a mechanism of the intergenerational transmission of status. However, previous research on this topic typically posits that there is a constant effect of these traits with variable prevalences of these traits by socioeconomic status. Using time spent on homework as an example, I analyze income-based heterogeneity in homework efficacy, defined as the individual effect of study time on academic achievement, using a national U.S. probability sample of secondary students. Higher income students gain more knowledge from their homework time than their counterparts in all grades and all subjects except history, with greater group differences for math than for science and reading. These results are confirmed by models accounting for time-invariant unobserved heterogeneity in the 8th–10th, but not 10th–12th, grade windows. These results imply that increases in the amount of homework assigned may increase the socioeconomic achievement gap in math, science, and reading in secondary school.     

对中国社会经济改革进程中收入不平等的认知:一个同期群组的分析

不同群组在对收入不平等的态度上是否会因为个人经历不同的时代背景而产生差异?运用2005年中国综合社会调查的数据,比较四组拥有不同时代背景经历的群组,在转型期对收入不平等的看法。研究结果显示,年龄较老的群组对于收入不平等持有更多批评而年轻群组则对收入不平等有着更为宽容的态度,考虑不同群组中的不同自身利益之后并不能大幅度降低人们对收入不平等的态度上的差异。研究进一步表明,更重要的中介因素是人们对社会公正的信念。     

HIV/AIDS and other household shocks as catalysts of local commercialization of non‐timber forest products in Southern Africa

Local trade in non‐timber forest products (NTFPs) is increasing globally, yet the causes have been little studied. We examine household shock as a driver of NTFP trade in five southern African countries, with an emphasis on HIV/AIDS‐related illness and death. Over the past two years, 95% of trader households experienced at least one shock, with family illness and death recorded for 68% and 42% of households, respectively. Almost 40% had entered the trade because of HIV/AIDS‐related shocks. Additional shocks included natural disasters, crop pests or failure and livestock loss. The sale of NTFPs was the third most common coping strategy, after kinship and agricultural adjustments. Coping strategies differed between sites and type of shock.     

Social insurance and children: The relationship between Social Security,economic well-being,and family context among child recipients

The relationship between social insurance, which provides families protection against certain risks, and child economic security is understudied. Using the 2004 Survey of Income and Program Participation (SIPP) matched to Social Security Administration benefit records, this article investigates the economic welfare effects of the child component of the US Social Security program. We examine how the poverty rate of child beneficiaries would change, absent Social Security income, and how heavily the family incomes of these children rely on it, by family characteristics. Our findings reveal that Social Security plays an important role in mitigating economic insecurity among children deprived of a wage-earning parent through disability, death, or retirement. Family structure, earnings, and employment status are identified as key factors moderating the effect of Social Security on child recipients’ financial circumstance.     

基于贝叶斯SDM模型的中国城镇居民收入收敛性分析

随着中国经济的高速增长,中国区域间贫富差距也日渐加大,在此背景下对中国城镇居民收入是否收敛进行检验并探究其影响原因十分必要。基于一个包括物质资本和人力资本投入的新古典增长模型,根据中国31个省市的1987—2013年数据,利用SDM模型和贝叶斯MCMC统计分析方法,研究城镇居民收入的收敛性问题,结果发现:中国城镇居民人均收入具有显著的空间差异,且在1987—2008年为发散、在2008—2013年以及1987—2013年为存在β收敛的变化趋势;物质资本对中国城镇居民收入增长的β收敛具有正向促进作用,而人力资本对其具有反向促进作用,增加物质资本投入有利于缩小地区收入差距,二者的不匹配可能是导致中国收入增长差距的原因。     

Characteristics of Couples Who Attend Family Services Counselor Visits in Relationship Education

Case management services for low-income couples receiving relationship education have been required by federal funding agencies. Studies examining relationship education outcomes for low-income couples have yet to address participant characteristics of those who attend case management services (e.g., distressed vs. nondistressed). Thus, this study examined the influence of baseline relationship satisfaction and demographics on attendance at case management visits for 2,628 low-income, partnered participants who attended relationship education. Findings indicated that participants who reported higher baseline relationship distress attended more family services counselor (FSC) visits. However, when we added demographics to the model, relationship distress no longer predicted FSC visits, whereas income served as a predictor for men and women, with those reporting greater monthly income attending more FSC visits.     

城乡困难家庭的求助网络及其政策启示

文章使用“城乡困难家庭调查”2014年跟踪数据，对我国城乡困难家庭的求助网络结构和家庭因素进行分析，发现：血缘和亲缘关系仍是我国城乡困难家庭最天然的帮扶网络，但官方社会救助系统的作用已超过民间系统，邻里朋友仅在血亲和官方系统失灵时起补充作用；基层治理结构对求助网络的城乡差异产生影响，流动人口家庭求助网络呈现多元均衡的特征，但面临官方救助系统的制度性缺失；人口规模、低保资格两个家庭因素对城乡困难家庭求助网络有显著影响。文章认为，应进一步发挥社会力量的作用，针对我国城乡困难家庭建立官民并举、多元协作的社会救助政策体系。