Spatial Differentiation and Driving Forces of Migrants’ Socio-Economic Integration in Urban China: Evidence from CMDS

Migrants’ socio-economic integration is a major theme in migration research, which can provide economic and cultural benefits. And it will contribute to social stability. The investigation from the spatial perspective should also be considered. This paper aims to examine the spatial differentiation of the socio-economic integration of migrants and identify its driving forces to provide crucial evidence and policy recommendations to urban policymakers and further improve migrants’ socio-economic integration. Based on the latest China Migrants Dynamic Survey, this paper uses global Moran’s I index, hot spot analysis and GWR model to explore spatial differentiation and driving forces of the socio-economic integration of 155,789 migrants in 291 cities at prefecture level and above in China. The results show that: (1) The socio-economic integration of migrants consists of five dimensions, which are economic integration, cultural integration, social security, social relation and psychological integration. Among them, psychological integration is the highest (73.16) and economic integration is the lowest (13.38). (2) The socio-economic integration of migrants is mainly influenced by their own characteristics instead of the destination characteristics. Four factors (age, education, length of stay and population growth rate) positively affect migrants’ socio-economic integration, while three factors (inter-provincial mobility, proportion of tertiary industry in GDP, and ratio of teacher to student in middle school) negatively impact the socio-economic integration of migrants. (3) The socio-economic integration of migrants shows the distribution pattern of agglomeration. And the integration also presents a significant spatial heterogeneity. The driving forces of the socio-economic integration exhibit various zonal spatial differentiation patterns, including “E–W”, “SE–NW”, “NE–SW”, and “S–N”. Finally, some useful recommendations are given for improving migrants’ socio-economic integration.

     

Tests for homogeneity of risk differences in stratified design with correlated bilateral data

ABSTRACT

Correlated bilateral data arise from stratified studies involving paired body organs in a subject. When it is desirable to conduct inference on the scale of risk difference, one needs first to assess the assumption of homogeneity in risk differences across strata. For testing homogeneity of risk differences, we herein propose eight methods derived respectively from weighted-least-squares (WLS), the Mantel-Haenszel (MH) estimator, the WLS method in combination with inverse hyperbolic tangent transformation, and the test statistics based on their log-transformation, the modified Score test statistic and Likelihood ratio test statistic. Simulation results showed that four of the tests perform well in general, with the tests based on the WLS method and inverse hyperbolic tangent transformation always performing satisfactorily even under small sample size designs. The methods are illustrated with a dataset.     

Sharing the surplus and proportional values

Theory and Decision - We introduce a family of proportional surplus division values for TU-games. Each value first assigns to each player a compromise between her stand-alone worth and the average...     

美国进步主义时期黑人对自由的抗争与追求

美国社会在19世纪末20世纪初经历了一次深刻的变革和急速发展的时期，在经济、政治和文化等领域都产生了巨大的变化，它不仅改变了美国的经济形态和社会图景，同时也冲击和改造了普通人的日常生活。而这一时期黑人的生存状态则发生了更大的变化，随着黑人自身权利意识的觉醒和有组织性斗争的出现，他们采取了多样化的抗争手段，与白人至上社会抗衡，历经苦难，执著地追求属于黑人自己的自由权利，并取得较大的突破。     

Bayesian nonparametric modelling of the link function in the single-index model using a Bernstein–Dirichlet process prior

This paper proposes the use of the Bernstein–Dirichlet process prior for a new nonparametric approach to estimating the link function in the single-index model (SIM). The Bernstein–Dirichlet process prior has so far mainly been used for nonparametric density estimation. Here we modify this approach to allow for an approximation of the unknown link function. Instead of the usual Gaussian distribution, the error term is assumed to be asymmetric Laplace distributed which increases the flexibility and robustness of the SIM. To automatically identify truly active predictors, spike-and-slab priors are used for Bayesian variable selection. Posterior computations are performed via a Metropolis-Hastings-within-Gibbs sampler using a truncation-based algorithm for stick-breaking priors. We compare the efficiency of the proposed approach with well-established techniques in an extensive simulation study and illustrate its practical performance by an application to nonparametric modelling of the power consumption in a sewage treatment plant.     

西部地区脱贫攻坚与乡村振兴战略的融合之路——基于10省85村1 143户的微观调查数据

脱贫攻坚与乡村振兴是不同历史阶段下的战略任务。二者在历史渊源、出场逻辑、科学内涵、推进思路上存在差异,但都是为建设社会主义现代化强国所作的制度安排,在战略愿景、服务诉求、参与主体、实践路径上具有同一性,共同服务于中华民族伟大复兴的中国梦和“两个一百年”的目标实现。一方面脱贫攻坚为乡村振兴提供政策基础、物质基础、舆论基础和模式借鉴,另一方面乡村振兴为巩固脱贫攻坚成果、防范返贫风险和解决2020年后的贫困问题提供长效保障。当前中国正处于脱贫攻坚收官之战与乡村振兴稳步实施的政策交汇期,探索脱贫攻坚与乡村振兴融合推进之路具有战略紧迫性和历史必然性。研究表明,西部地区脱贫攻坚与乡村振兴已实现初步互动,但实现两大战略的良性互动仍需进一步优化联动机制、筑牢产业发展根基、提高乡村治理与生态文明水平、引领文化风尚、推动共同富裕,使西部地区在新时代新一轮的大开发中展现更大作为。     

Generalized Estimation of the BLUP in Mixed-Effects Models: A Comparison with ML and REML

The Best Linear Unbiased Predictor (BLUP) in mixed models is a function of the variance components and they are estimated using maximum likelihood (ML) or restricted ML methods. Nonconvergence of BLUP would occur due to a drawback of the standard likelihood-based approaches. In such situations, ML and REML either do not provide any BLUPs or all become equal. To overcome this drawback, we provide a generalized estimate (GE) of BLUP that does not suffer from the problem of negative or zero variance components, and compare its performance against the ML and REML estimates of BLUP. Simulated and published data are used to compare BLUP.     

基于价值链的中国企业社会责任对财务价值的影响

为了支持企业持续地将履行社会责任作为一种长期的战略,探讨企业社会责任与业务相结合对财务绩效的影响以及如何选择既造福社会又有利于商业的社会责任项目.基于价值链视角,采用利益相关者理论和归因理论,用实证方法,选择中国公司社会责任披露的数据,采用因子分析法划分企业社会责任活动,采用面板数据回归分析每种社会责任活动及其交互作用对企业财务绩效的影响.研究结果表明,把社会责任活动分为与价值链基本活动相关的社会责任、与价值链支持活动相关的社会责任和一般性社会责任(与价值链活动无关),与价值链基本活动相关的社会责任和与价值链支持活动相关的社会责任对财务绩效有积极影响,与价值链活动无关的一般性社会责任对财务绩效有消极影响,他们的交互作用对财务绩效也有方向不同的显著影响,即基本活动与支持活动的交互作用对财务绩效有积极影响,基本活动与一般性活动的交互作用对财务绩效有积极影响,而支持活动与一般性活动的交互作用对财务绩效有消极影响.研究结果对企业将履行社会责任与价值创造相结合、实现社会效益和经济效益双赢提供具体的参考.     

文化视阈下家族政治与伦常婚姻--兼评《汉魏六朝琅琊王氏家族政治与婚姻文化研究》

从学术文化视角研究家族政治与伦常婚姻构成,对于家族政治与婚姻文化研究并不鲜见;但将家族文化承传和学术走向作为研究家族政治与伦常婚姻发展的内在机制,并通过家族学术特征和文化承传探讨家族政治和伦常婚姻发展存续的内外在特点,则表现出《汉魏六朝琅琊王氏家族政治与婚姻文化研究》一书独特的视角与思维。该书涉及范围广泛、触及问题众多、史论探讨详尽,无疑为此类课题研究做出了有价值的个案尝试。