Provincial Conditional Income Convergence in China, 1953-1997: A Panel Data Approach

This paper examines the tendency towards income convergence among China's main provinces during the two periods: the pre-reform period 1953-1977 and the reform period 1978-1997 using the framework of the Solow growth model. The panel data method accounts for not only province-specific initial technology level but also the heterogeneity of the technological progress rate between the fast-growing coastal and interior provinces. Estimation problems of weak instruments and endogeneity are addressed by the use of a system generalized method of moments (GMM) estimator. The main empirical finding is that there is a system-wide income divergence during the reform period because the coastal provinces do not share a common technology progress rate with the interior provinces.     

Conditional Functional Principal Components Analysis

Abstract.  This work proposes an extension of the functional principal components analysis (FPCA) or Karhunen–Loève expansion, which can take into account non-parametrically the effects of an additional covariate. Such models can also be interpreted as non-parametric mixed effect models for functional data. We propose estimators based on kernel smoothers and a data-driven selection procedure of the smoothing parameters based on a two-step cross-validation criterion. The conditional FPCA is illustrated with the analysis of a data set consisting of egg laying curves for female fruit flies. Convergence rates are given for estimators of the conditional mean function and the conditional covariance operator when the entire curves are collected. Almost sure convergence is also proven when one observes discretized noisy sample paths only. A simulation study allows us to check the good behaviour of the estimators.     

Law of iterated logarithm and almost sure limit points for random sums

Let {X_n,n≥1} be a sequence of independent identically distributed (i.i.d) random variables with a common distribution function F. When F belongs to the domain of partial attraction of a Semi-Stable law with index ,0<<2, we give complete solution to the results of R. Vasudeva and G. Divanji [Law of iterated logarithm for random subsequences, Statist. Probab. Lett. 12 (1991) 189–194], where they obtained Chover’s form of the law of iterated logarithm for random subsequences. Further, we extended the situation in obtaining almost sure limit points for random subsequences.     

Genetic algorithms for numerical optimization

Genetic algorithms (GAs) are stochastic adaptive algorithms whose search method is based on simulation of natural genetic inheritance and Darwinian striving for survival. They can be used to find approximate solutions to numerical optimization problems in cases where finding the exact optimum is prohibitively expensive, or where no algorithm is known. However, such applications can encounter problems that sometimes delay, if not prevent, finding the optimal solutions with desired precision. In this paper we describe applications of GAs to numerical optimization, present three novel ways to handle such problems, and give some experimental results.     

论世界儿童立法的趋同化--兼对完善中国儿童立法的几点思考

法律的趋同化是全球化背景下的一个世界性潮流.法律趋同化发展在儿童立法领域呈现出两个明显的历史阶段,即以1899年美国伊利诺斯州<少年法庭法>为标志的第一个历史阶段和以1989年联合国<儿童权利公约>为标志的第二个历史阶段.各国儿童立法的趋同化及其与国际立法的协调也是随着儿童立法趋同化发展而不断发展.中国儿童立法应顺应世界儿童立法趋同化发展的历史潮流,大胆借鉴和吸收国际上成功的实践经验,加快完善中国儿童立法的步伐;加快对现有法律法规的修改完善和新法的制定,完善少年司法制度,发挥非政府组织的作用,培养专业的少年法官和儿童法律工作者.     

Nonparametric M-regression with free knot splines

Many problems of practical interest can be formulated as the nonparametric estimation of a certain function such as a regression function, logistic or other generalized regression function, density function, conditional density function, hazard function, or conditional hazard function. Extended linear modeling provides a convenient theoretical framework for using polynomial splines and their selected tensor products in such function estimation problems and especially for obtaining rates of convergence of the resulting estimates in a unified manner. For a long time the theoretical results were restricted to fixed knot splines and to log-likelihood functions that were twice continuously differentiable. Recently, Stone and Huang extended the theory to handle free knot splines. In the present paper, the theory is further extended to handle contexts in which the log-likelihood function may not be differentiable. Specifically, we establish rates of convergence for estimation based on free knot splines in the context of nonparametric regression corresponding to M-estimates, which includes least absolute deviations (LAD) regression, quantile regression, and robust regression as special cases.     

A copula‐graphic estimator for the conditional survival function under dependent censoring

Rivest Wells (2001) showed that in situations where the dependence between a lifetime and a censoring variable can be modeled by a given Archimedean copula, the copula‐graphic estimator of Zheng Klein (1995) has an explicit form. The authors extend this work to the fixed design regression case. They show that the copula‐graphic estimator then has an asymptotic representation and a Gaussian limit. They also assess the influence of a misspecified copula function on the performance of the estimator. Their developments are illustrated with data on the survival of the Atlantic halibut.     

媒介融合视域下的央视春晚思想政治教育功能探析

根据第43次《中国互联网络发展状况统计报告》,截至2018年年底,我国网民数量达8亿多人。网民群体的发展壮大与互联网技术的快速更迭,重塑着媒介形态、再造人们的思想观念、重构着思想政治教育环境,这让数字传播技术下的媒介融合与全媒体建设迫在眉睫,主流意识形态的巩固和传播刻不容缓。从探索思想政治教育和春晚的同向同行的逻辑理路出发,以体制机制深度融合、科学艺术交相辉映、内容形式守正创新、传播渠道网状立体四个方面阐释春晚思想政治教育艺术化的创新表达。从丰富思政教育资源也需防范数字鸿沟、应用数字技术也需谨慎技术异化、开放传播体系也需小心危险思潮三个方面来思考媒介融合视域下思想政治教育的创新与发展。     

加快推动媒体融合发展 构建全媒体传播格局

整合高校媒介资源,推动传统媒体和新兴媒体融合发展,是适应媒体格局深刻变化、创新高校宣传思想工作的有效途径,也是提升校园媒体引导主流舆论氛围、丰富校园文化、弘扬传播正能量的重要举措。研究立足媒体融合背景,聚焦高校新闻宣传工作新形势新要求,结合学生校园媒体使用情况调研结果,提出高校校园媒体融合的路径,将融合发展的理念贯穿到校园媒体建设发展各环节、全过程,形成高校宣传工作合力。     

数字化对传媒生态的影响

传媒生态是指在一定时间和空间内传媒内部与外部各要素及其关系的总和。传媒生态受诸多因素的影响,而技术是其中最主要的因素之一。作为人类传播史上最重要的一次技术革命,数字化技术对传媒生态产生的巨大影响正日益显现。从传媒内生态和外生态两个视角,考察了数字化对整个传媒生态引发的变化及带来的影响。