坚持市场化的方向 调整老工业基地的产业布局

中央振兴东北老工业基地的战略决策已经实施一年多了,一年来东北三省的经济快速增长。但是老工业基地要快速、平稳、持续地发展,必须具有良好的产业布局。为此,要把新兴工业化作为振兴东北老工业基地新的重大课题。     

在公平与效率之间:对北京市养老资源的空间分析

基于网络采集的养老机构数据和第六次全国人口普查数据，以公共设施区位理论为框架，使用空间分析方法，本文对北京市养老资源的分布模式进行了研究。研究发现，在乡镇/街道层面，整体上公办养老资源分布相对均衡，呈现正的空间依赖，民办养老资源则局部呈现负的空间相关性特征。空间回归分析表明，尽管两者布局均受到辖域内服务对象绝对数量这一因素的影响，但民办养老资源分布对老年人口密度这一指标更为敏感。不同类型的养老资源分散与集聚的空间模式，体现了公共设施供给问题上效率与公平原则之间的对比关系，这是行政与市场力量形塑的结果。     

ESTIMATION OF SPATIAL ARMA MODELS

Spatial ARMA models are considered using the nonsymmetric half plane ordering on a lattice of data. A method is given for the estimation of the orders and the coefficients of such models under an identifiability condition and the condition that the beat linear predictor is the best predictor in the mean square sense. Under these conditions, the strong consistency of the estimators ia established. The usual methods for ARMA modelling in Time Series Analysis require estimation of the innovations. The method of this paper introduces an inveree model complementary to the original model so that the estimation of the innovations is avoided. This leads to a substantial reduction in the computational complexity in the two-dimensional case.     

当前关于“四个全面”研究综述

"四个全面"战略布局是当前学术理论界重点关注的问题。2015年2月以来,专家学者开始围绕"四个全面"的一系列理论问题展开了多学科、多方位、多角度的解读和研究,并初步取得了一系列成果。从"四个全面"的价值意义、科学内涵、内在逻辑、演进脉络和协调推进等几个方面对当前学术理论界的研究成果进行归纳、梳理和评析,有利于把"四个全面"战略布局的研究讨论进一步引向深入。     

中国城市民生发展的区域差异测度、来源分解与形成机理

本文基于熵值法构建城市民生发展指数,利用Dagum基尼系数和方差分解方法首次从空间和结构两个视角考察我国城市民生发展的差异大小及来源,并运用关系数据分析范式研究其形成机理。研究发现:我国城市民生发展水平持续向好,但2010年之后民生发展不均衡现象显著;民生发展总体差异主要来源于区域间差异,其中东部和中部区域间差异贡献最大,东部区域内差异贡献显著高于中部、西部地区;社会发展差异和生态建设差异是民生发展差异的主要结构来源;人民生活差异、科技创新差异对民生发展差异的影响均从东向西依次减弱,社会发展差异的作用则依次增强,生态建设差异的影响在中部地区最为突出,经济发展差异对东部地区的影响较弱;人民生活差异、科技创新差异上升是导致2010年之后民生发展差异扩大的主要原因。本研究丰富了城市民生评价体系的构建方案,为揭示我国城市民生发展差异状况、探索协同提升对策提供了重要借鉴经验。     

空间溢出视角下的生产性服务业集聚与长三角城市群经济增长效率

本文利用空间杜宾模型实证研究了生产性服务业集聚对长三角城市群经济增长效率的影响及空间溢出效应。结果表明,生产性服务业集聚不仅能够显著提升本地区的经济增长效率,还对邻近城市具有正向的空间溢出效应,但这种影响在生产性服务业的细分行业之间存在一定异质性。进一步分析发现,生产性服务业集聚的MAR外部性和Jacobs外部性都有利于长三角城市群经济增长效率的提升,而Porter 外部性对经济增长效率具有负面影响。在空间溢出效应方面,Jacobs外部性对经济发展水平相近的城市具有负向溢出效应,Porter外部性对人力资本水平相近的城市具有正向溢出效应。此外,生产性服务业与制造业协同集聚对本地区和人力资本水平相近城市的经济增长效率具有显著促进作用,但对邻近城市和经济发展水平相近城市的经济增长效率因“虹吸效应”而产生一定的抑制作用。这些研究,对如何更有针对性地加快提升长三角城市群经济增长效率,提供了有价值的理论依据。     

Complexity in applying spatial analysis to describe heterogeneous air-trapping in thoracic imaging data

In this paper we consider a novel approach to analyzing medical images by applying a concept typically employed in geospatial studies. For certain diseases, such as asthma, there is a relevant distinction between the heterogeneity of constriction in airways for patients compared to healthy individuals. In order to describe such heterogeneities quantitatively, we utilize spatial correlation in the realm of lung computer tomography (CT). Specifically, we apply the approximate profile-likelihood estimator (APLE) to simulated lung air-trapping data selected based on potential interest to pulmonologists, and we explore reference values obtainable through this statistic. Results indicate that APLE values are independent of air-trapping values, and can provide useful insight into spatial patterns of these values within the lungs in situations where other common metrics, such as the coefficient of variation, reveal little. The APLE relies on a neighborhood weights matrix to define spatial relatedness of considered regions, and among a few weight structures explored, a working optimal choice seems to be one based on the inverse distance squared between regions of interest. The application yields a new method to help analyze the degree of heterogeneity in lung CT images, which can be generalized to other medical images as well.     

西里尔蒙古文网页向传统蒙古文自动转换系统之网页排版格式转换

蒙古文主要有传统蒙古文和西里尔蒙古文两种。由于传统蒙古文的字形变换，书写方向，文献排版格式等方面的许多特殊性，蒙古文在线处理很落后，与其提供的网页信息很少．但是可以通过把西里尔蒙古文网页转换到传统蒙古文来获取更多网上信息，这时不仅要进行文字转换，而且还需要进行网页排版格式转换。     

A First-Order Spatial Integer-Valued Autoregressive SINAR(1, 1) Model

Binomial thinning operator has a major role in modeling one-dimensional integer-valued autoregressive time series models. The purpose of this article is to extend the use of such operator to define a new stationary first-order spatial non negative, integer-valued autoregressive SINAR(1, 1) model. We study some properties of this model like the mean, variance and autocorrelation function. Yule-Walker estimator of the model parameters is also obtained. Some numerical results of the model are presented and, moreover, this model is applied to a real data set.     

The persistence of white flight in middle-class suburbia

Scholars have continued to debate the extent to which white flight remains racially motivated or, in contrast, the result of socioeconomic concerns that proxy locations of minority residence. Using 1990–2010 census data, this study contributes to this debate by re-examining white flight in a sample of both poor and middle-class suburban neighborhoods. Findings fail to provide evidence in support of the racial proxy hypothesis. To the contrary, for neighborhoods with a larger non-white presence, white flight is instead more likely in middle-class as opposed to poorer neighborhoods. These results not only confirm the continued salience of race for white flight, but also suggest that racial white flight may be motivated to an even greater extent in middle-class, suburban neighborhoods. Theoretically, these findings point to the decoupling of economic and racial residential integration, as white flight may persist for groups even despite higher levels of socioeconomic attainment.