四川省区域经济增长趋同与分异研究

根据1978--2005年四川省各市州的人均GDP数据，以新古典增长理论为基础，对四川区域经济增长进行研究。结果表明：在整个时段上，四川区域经济增长经历了趋同一分异一趋同的过程；在1978--1990年期间，区域经济增长存在显著趋同且趋同速度较快，但在1990--2005年期间，区域经济增长分异的趋势较强。趋同的趋势不甚明显；通过引入控制变量和地区虚拟变量分析，说明在社会主义市场经济体制建立的过程中。四川区域经济增长存在条件收敛，五大经济区有“俱乐部”趋同的倾向。     

二十一世纪东西文化趋近与中国文化创新

本文认为21世纪人类文化的大格局,仍将是多元并茂、互补共进,人类文化、东西文化发展的总趋势,必然是彼此逐渐走向趋近和融合,在趋近与融合中化解矛盾、避免冲突、互补互动、创新发展。汤因比的“世界统一论”、亨廷顿的“文明冲突论”,既不符合文化发展自身的逻辑,也是不现实的。中国文化在中西文化趋近与融合的大背景中,必然实现进一步的融合与创新,对解决人类面临的困境做出自己的贡献。     

Consistent deconvolution in density estimation

Suppose we have n observations from X = Y + Z, where Z is a noise component with known distribution, and Y has an unknown density f. When the characteristic function of Z is nonzero almost everywhere, we show that it is possible to construct a density estimate f_n such that for all f, Iim_n| |=0.     

Institutionalizing Counter‐Memories of the U.S. Civil Rights Movement: The National Civil Rights Museum and an Application of the Interest‐Convergence Principle

During the post–Reconstruction era in the United States, white southerners marked the cultural landscape with monuments and memorials honoring the Confederate cause and its heroes. These racialized symbols enjoyed an undisputed claim to public squares and parks throughout the South. It was not until the late twentieth century that commemorations to the black freedom struggle were publicly supported. This analysis examines the institutionalization of counter‐memories of the civil rights movement in Memphis, Tennessee at the Lorraine Motel, the site of the assassination of Reverend Dr. Martin Luther King, Jr. The author draws on collective memory, cultural trauma, and social movements research as well as critical race theory to explain the creation of the National Civil Rights Museum. Using primary and secondary data sources the author examines how social memory agents, a changing political culture, and the passage of time mediated the cultural trauma of King's assassination and influenced the institutionalization of oppositional collective memories. Relying on Derrick Bell's interest‐convergence principle, the author concludes that the creation of this major memorial museum was a result of the convergence of white and black interests, specifically the economic and political interests of white elites and the cultural and political interests of black symbolic entrepreneurs.     

中国农业现代化发展水平时空格局及趋同演变

采用熵权TOPSIS法对我国2001—2012年31省份的农业现代化发展水平进行综合评价,进而采用GIS技术对我国农业现代化发展水平进行空间格局分析,并运用Markov链方法对我国农业现代化水平的趋同演变进行了实证研究。研究发现：（1）整体上我国农业现代化水平从东部到中部再到西部梯度降低,且存在显著的空间自相关,发展水平相似的地区呈现集聚分布;（2）农业现代化水平还表现出一定的俱乐部趋同特征,随着时间积累,各俱乐部的趋同迹象有所缓解,但一直都存在着“高水平垄断”现象;（3）空间因素对地区农业现代化的发展具有积极影响,高水平的邻居更能带动本地区农业现代化水平的提高,研究还发现在考察期内这种带动作用需要3年的时间积累才能体现。     

中国区域FDI技术效率及其差异性

在对传统的FDI绩效指标进行分析的基础上,文章构建了能够同时反映FDI对东道国经济发展和环境污染等双重影响的FDI技术效率指标,并利用中国2000-2010年的省级数据进行分析,发现:中国和分东中西部地区的FDI技术效率在样本期内有明显的改善,并且环境约束下的FDI技术效率显著高于无环境约束下的效率值;采用泰尔系数的进一步分析发现中国的FDI技术效率存在一定的区域差异,并且其差距从2000年到2010年逐年下降,从而说明中国地区FDI技术效率存在收敛现象.     

Approximating moments of continuous functions of random variables using Bernstein polynomials

Bernstein polynomials have many interesting properties. In statistics, they were mainly used to estimate density functions and regression relationships. The main objective of this paper is to promote further use of Bernstein polynomials in statistics. This includes (1) providing a high-level approximation of the moments of a continuous function $g\left(X\right)$ of a random variable $X$, and (2) proving Jensen’s inequality concerning a convex function without requiring second differentiability of the function. The approximation in (1) is demonstrated to be quite superior to the delta method, which is used to approximate the variance of $g\left(X\right)$ with the added assumption of differentiability of the function. Two numerical examples are given to illustrate the application of the proposed methodology in (1).     

Macroeconomic asymmetry in the Eurozone before and after the Global Financial Crisis: An appraisal of the role of the ECB

The launch of the euro in 1999 was assumed to enhance macroeconomic convergence among EMU economies. We test this hypothesis from a comparative perspective, by calculating different indices to measure the degree of macroeconomic dispersion within the Eurozone, the UK and the USA (1999–2019). We use common factor models to produce a single index for each monetary area out of different measures of dispersion. These indices can be used to inform on the degree of optimality of a monetary area. Our results show that macroeconomic dispersion in the Eurozone increased notably even before 2007 and it took significantly longer to return to pre-crisis levels, as compared to the UK and the USA. The paper shows the critical role played by the ECB’s asset purchases programmes in reducing macroeconomic divergences among EMU member states since 2015.     

媒介融合概念的解析与层次

媒介融合已成为学术热点,但学界对于什么是媒介融合、媒介融合的层次划分等基本问题依然缺乏足够讨论。通过梳理国内外学界有关媒介融合的研究文献发现,虽然融合一词是这一概念的核心,但媒介融合概念的界定却在很大程度上取决于媒介一词,并且至少可以从技术、经济、组织以及制度四个维度来分析和理解其内涵和层次;同时,媒介融合不仅是一个涉及技术、经济、组织以及制度等多个构面和层次的概念,而且是人类社会发展进程中一个全新"技术-经济范式"的内核。     

中国绿色农业技术效率及其省际差异分析——基于1998—2012年的面板数据

基于1998—2012年面板数据,运用熵值法和DEA模型测算中国绿色农业产出和绿色农业技术效率,并分析其省际差异。研究表明,中国农业已经初具绿色转型的趋势,除东北地区外,其他地区绿色农业技术效率均上升;中国绿色农业技术效率有所提升,但整体水平仍然低下。东部、西部、东北、中部地区效率依次递减;全国省域间效率绝对差距没有缩小趋势,但相对差距明显缩小。东部、中部、西部和东北地区各地区内省域间绝对差距均没有缩小趋势,但东部、中部地区各地区内省域间相对差距存在缩小趋势,而西部、东北地区没有缩小趋势。全国2/3的省份绿色农业技术效率低下但处于增长态势;东北三省和内蒙古、宁夏、新疆陷入效率低下且呈下降态势的双重困境。