中国城市的企业家精神——时空分布与影响因素

本文以每万人拥有的中小企业数量为代理变量,分析了中国城市企业家精神的空间分布格局、变化趋势和影响因素。结果表明,企业家精神整体提升的同时,地区差异也在扩大;空间自相关显著,集聚趋势不断增强;变化强度呈西减东增的趋势。互联网设施、人口多样性、沿海区位和资源环境压力、较高的女性比重、较少的政府干预和较低的国企占比和外资占比有促进作用;未发现集聚和房价的显著影响;而平均教育水平与企业家精神显著负相关,说明我国的创业类型、教育体制和内容还有待提升。     

UNIFORM SPATIAL PRICING

ABSTRACT Uniform spatial pricing means that a firm delivers its product to any customer at a fixed price, independent of location. Economic theory explains the use of uniform pricing by the added profit generated by absorbing freight charges of distant customers. I extend this insight by demonstrating that when demand elasticity and transportation cost are positively enough correlated, uniform pricing generates higher profits than mill pricing. I show that this result can better explain observed patterns of price policy choice by mail order and web firms. A second result is application of this idea to firms with many shipping facilities.     

江苏省县域经济集聚和收敛的空间计量分析

通过探索性空间数据分析和空间计量分析方法,以实际人均GDP为测度指标,对江苏省65个县市的经济空间集聚、增长收敛性以及收敛机制进行讨论。研究发现1993-2009年实际人均GDP显示出越来越高的全局正相关,局部空间相关性也有增强的趋势。空间计量分析结果表明江苏省县域经济存在着β收敛,分时段研究为不同研究时段选择恰当的空间收敛模型后,收敛速度加快。技术扩散收敛机制和资本收敛机制分别在研究区间的前期和后期占主导作用,收敛机制的转变与江苏省在20世纪90年代末开始实行的区域协调发展政策密切相关。     

环境公正视角下空气污染和死亡人数的空间分析及关系研究——以河北省为例

基于空气污染的环境公正研究在国际上受到较多关注,但在发展中国家、尤其是中国,相关研究较为缺乏。本文使用2010年河北省人口普查和空气质量数据,采用空间分析、描述性统计以及空间回归模型等方法对基于乡镇街道层面的空气污染和死亡人数的空间分布、社会分布及其关系进行研究。结果表明,河北省空气污染和死亡人数在城市和农村地区存在显著差异;基于乡镇街道层面,河北省的婴儿（1岁及以下）、老年人（60岁及以上）、失业者和省外农村流动人口更多地居住在空气污染比较严重的地区;婴儿、老年人、使用固体燃料或住房无洗澡设施的家庭户聚集的乡镇街道其死亡人数较多;空气污染与死亡人数之间存在显著的正相关。本研究旨在促进对中国环境公正与健康不平等的理解和认识,为发展更为公平、有效的环境健康政策提供科学依据。     

基于POI大数据的老工业区房价影响因素空间分异与实证

在采集沈阳市铁西区2017年住宅、工厂、地铁站等兴趣点数据的基础上,将工厂距离、房龄以及住宅密度三个变量与传统变量共同参与构建地理加权回归模型,揭示房价影响因素的空间异质性及形成机制。结果表明：在全区范围内,房龄、住宅密度、公共交通、公共配套设施等对房价有显著的提升作用,而工业企业等对房价有一定的抑制作用;新老城区对比来看,所筛选的影响因素与房价的相关性具有显著的空间非平稳性,具体表现在工厂距离、公交密度、商场距离等因素在新老城区的正负影响差异,以及住宅密度、地铁站距离等单向影响因子回归系数的强度渐变;从研究方法来看,基于POI与GWR集成分析,可以有效克服房价实时更新慢、准确度低及数据清洗困难等传统难题,从而为构建和发展新数据环境下的经济地理研究提供参考。     

空间联系视角的沈阳市多中心城市结构研究

以沈阳市为研究案例,借鉴国际著名团队POLYNET的研究经验并加以改良,进行了空间联系视角的多中心城市结构的实证分析。分别从人口密度分布、就业-居住空间联系网络与企业空间组织网络三个维度来识别沈阳市的人口中心、就业中心与产业中心,综合分析这些"中心"得出四点结论:①城市核心区就业与居住中心构成十字交叉的内循环结构;②浑南新区次中心特征颇具雏形;③外围人口中心、就业中心与产业中心错位发展;④沈阳市呈现不均衡的多中心结构特征。     

交通区位演化与空间开发强度的时空协同关系及其弹性识别——重庆市案例实证研究

交通区位条件是反映区域发展潜力的重要指标,分析其与空间开发强度之间的时空协同关系对揭示区域发展的动力机制具有重要启示意义。以重庆市为例,通过指数建模、回归拟合及弹性系数等方法,揭示其间互动关系。研究发现：①研究区交通区位指数处于快速跃升阶段,区域差距有所缩小,空间集聚格局基本稳定;②空间开发强度指数数值整体偏低,增速差异较大,空间集聚格局呈单集聚中心向多集聚中心演进趋势;③不同类型的交通区位指数（内部、外部和综合）与空间开发强度指数均呈显著正相关,且关联性表现出不同状态;④交通区位演化与空间开发强度互动敏感程度较高,各弹性系数空间集聚格局基本一致,但其形成机理差异较大。     

HOW THE VISUAL IS SPATIAL: CONTEMPORARY SPATIAL HISTORY,NEO-MARXISM,AND THE GHOST OF BRAUDEL

Contemporary spatial history is founded on the potential for maps and other visualizations to show the historical constructedness of space, usually in broadly neo-Marxist terms, yet neo-Marxist geographical theory is famously critical of visual representation, especially mapping. At stake in this contradiction isn't just the relationship between digital enthusiasm and spatial theory (or the wider spatial turn), but the theoretical status of the visual itself in spatial scholarship. It raises a crucial question: how does visual material—everything from today's statistical maps and cutting-edge data graphics to the broader use of primary-source photographs or drawings—in fact shape our understanding of space, and what theoretical work does it do? By extension, how can humanists make critical theoretical interventions through their own visual production? This article proposes an analytic vocabulary of “visual argument” grounded in an image-focused rereading of two canonical bodies of work: the neo-Marxist theory most cited by spatial history (Henri Lefebvre, David Harvey, Doreen Massey, and Edward Soja) and the conspicuously uncited work of Fernand Braudel. By focusing on how these authors’ illustrations make claims about spatial subjectivity and the historicity of space—especially through visual relationships of background and foreground—I argue for a new way of understanding and responding to this work and to the visual project of spatial history today. A visual analysis highlights not only the limitations of neo-Marxism but also the pervasiveness of certain assumptions—shared across the neo-Marxists, Braudel, and digital visualization—about temporality, the natural/human dichotomy, and the methodological tensions between argument and visualization. I present my own mapping of Phoenix as one possibility for an argument-driven rethinking of familiar visual commitments, which also suggests a broader meditation on the relationship between visual and textual scholarship.     

北京都市区就业空间分异与职住空间错位行业识别

城市就业空间分异与职住空间错位是反映城市空间结构特征且存在密切联系的两项重要议题。分析了北京都市区就业空间分异特征，识别了对职住空间错位影响显著的行业。结果表明：①从城市中心向外延伸，分布产业高度具有显著的梯度性和圈层结构特征；②就业行业空间分布可分为四种类型：中心城区集中就业的高端商业和生产性服务业，中心城区为主近郊区集聚就业的文化科技型服务业，近郊就业为主的传统服务业和生活服务业，远郊就业为主的保障性服务业和生产制造业；③批发和零售业，信息传输、软件和信息技术服务业，金融业，居民服务、修理和其他服务业及教育业等五大行业对北京都市区职住空间错位影响显著。     

Spurios Spatial Regression: Some Monte Carlo Results with a Spatial Unit Root and Spatial Cointegration

In this paper I introduce the concepts of spatial unit roots and spatial cointegration, and via Monte-Carlo simulation I illustrate their implications for spatial regression. It is shown that spatial unit roots lead to spurious (spatial) regression, as in the well-known case involving time-series. Spatial cointegration is similar to its time-series counterpart, although I demonstrate that OLS estimation of spatial error-correction models is not consistent.     

基于GIS的中国传统村落空间分异研究

以2012年住房和城乡建设部等国家四部委联合评审认定的646家"中国传统村落"为研究对象,通过谷歌地理信息系统(GoodyGIS)定位村落的地理坐标,确定海拔高程等属性。利用Arcgis10.1和GeoDa技术平台,对中国传统村落的空间分异特征进行综合分析。研究发现:中国传统村落在空间上呈明显的集聚型分布,在各省份间具不均衡态势,呈现出黔东南-湘西、皖南-浙西-闽西北、晋-冀-豫和滇西北等四个核密度高值区。传统村落距离中心城市较远,大多数村落处在40-100km的直线范围内。全局及局部空间自相关研究结果表明,不同高程中国传统村落的空间分布明显存在着高高(HH)、低低(LL)集聚现象,缺乏低高(LH)、高低(HL)区域,反映出传统村落在空间选址上所具有的复杂性和多样性特征。     

城市长租公寓的空间布局与影响机制实证研究——以深圳为例

长租公寓作为住房市场的新兴业态，是贯彻国家“租购并举”住房政策的重要保障。本文以深圳为例，基于迈点研究院的数据，通过GIS空间分析工具，探讨长租公寓的空间布局及影响机制。研究表明：(1)深圳长租公寓空间布局呈现空间集聚性、距离衰减性、类型分异性特征，具体表现为紧邻中心城区的空间集聚性，从中心城区边缘向外围递减的距离衰减性，酒店、公寓、房地产系长租公寓热点区呈中心城区向外扩展态势的类型分异性；(2)地铁、超市商城、常住人口是影响长租公寓空间布局的主要因素，其影响作用存在空间异质性；(3)运用地租和新消费者理论，从供求视角构建长租公寓空间布局的影响机制。本研究可丰富新兴住房业态空间集聚模式和中国住房研究。     

GEOGRAPHY'S SPATIAL PERSPECTIVE AND THE PHILOSOPHY OF ERNST CASSIRER

O ne of the distinctive features of geographic research is the spatial perspective which is manifested in the geographic literature through the use of a wide variety of spatial concepts. Until the recent work of phenomenological geographers, the variety of concepts used by geographers conformed to the ideals of a scientific geography in that they referred to measurable relations between phenomena. The relations may be directly measurable, such as the highway distance between Los Angeles and San Diego, or they may be indirectly measurable, such as an individual's perception of the distance between the same two cities. This interest in both objective as well as perceived spatial relationships illustrates the expanded scope of geography's spatial perspective, which has resulted in an increase in the number of spatial concepts of significance to geographers and a proliferation of the meanings given to the traditional spatial concepts of geography.     

SEISMIC BEHAVIOUR OF PERIMETER AND SPATIAL STEEL FRAMES

The present study deals with the seismic performance of partial perimeter and spatial moment resisting frames (MRFs) for low-to-medium rise buildings. It seeks to establish perimeter configuration systems and hence the lack of redundancy can detrimentally affect the seismic response of framed buildings. The paper tackles this key issue by com-paring the performance of a set of perimeter and spatial MRFs, which were “consistently designed”. The starting point is the set of low-(three-storey) and medium-rise (nine-storey) perimeter frames designed within the SAC Steel Project for the Los Angeles, Seattle and Boston seismic zones. Extensive design analyses (static and multi-modal) of the perimeter frame buildings and consistent design of spatial frame systems, as an alternative to the perimeter configuration, were conducted within this analytical study. The objectives of the consistent design are two-fold, i.e. obtaining fundamental periods similar to those of the perimeter frames, i.e. same lateral stiffness under design horizon-tal loads, and supplying similar yield strength. The seismic behaviour of perimeter and spatial configuration structures was evaluated by means of push-over non-linear static analyses and inelastic dynamic analyses (non linear time histories). Comparisons be-tween analysis results were developed in a well defined framework since a clear scheme to define and evaluate relevant limit states is suggested. The failure modes, either local or global, were computed and correlated to design choices, particularly those concerning the strength requirements (column overstrength factors) and stiffness (elastic stability indexes). The inelastic response exhibited by the sample MRFs under severe ground motions was assessed in a detailed fashion. Conclusions are drawn in terms of local and global performance, namely global and inter-storey drifts, beam and column plas-tic rotations, hysteretic energy. The finding is that the seismic response of perimeter and spatial MRFs is fairly similar. Therefore, an equivalent behaviour between the two configurations can be obtained if the design is “consistent”.     

基于GWR模型的长江中游城市群传统村落空间格局及可达性探究

以长江中游城市群170个传统村落为研究对象,利用核密度法探讨城市群传统村落的空间分布特征,使用谷歌地图全球搜索引擎与相关公式测算各传统村落的可达性。运用地理空间计量方法GWR回归模型重点剖析影响城市群传统村落可达性水平重要因子的具体影响程度并考量其空间异化效应。研究表明：①长江中游城市群传统村落存在三个高度集聚区,呈"品"形分布,其中有两大集聚区处于环鄱阳湖城市群内部。②传统村落可达性整体水平不高,时间成本较大,所在地区路网密度低,交通便利性不高,并受明显的支流效应影响,水系、山体和交通将一定程度上影响村落的可进入性水平。③地势高低与路网等级对传统村落可达性水平具有正向作用,邻水体距离对传统村落可达性水平呈负相关关系,而坡度值对可达性影响不显著。     

上海大都市区物联网产业集聚与空间演化

新兴技术产业的空间集聚与扩散对大都市区的空间结构有直接的影响,厘清新兴技术产业的空间分布和区位选择规律对新兴产业集群培育和大都市区空间结构调整都具有重要的政策意义。本文分析了上海市物联网企业的空间分布和集聚特征,结果发现初创期物联网企业在郊区集聚,随后向郊区其他区域扩散,并呈现出从单极向多极集聚转变的空间演化进程。通过构建负二项回归探究上海物联网企业的区位选择因素,结果表明制度因素和企业集聚效应对企业区位选择有重要影响。在产业发展初创期,企业区位选择受政府管制和市场机制双重影响,其中制度因素发挥了关键作用;而在随后的兴起期,产业集聚效应对新企业的入驻具有强大的吸引力。     

DIAGNOSTICS FOR REGRESSION MODELING IN SPATIAL ECONOMETRICS*

ABSTRACT. This paper describes statistics for model criticism in spatial econometrics. The purpose of these statistics is to evaluate how well a chosen model fits the data and to identify influential cases and how they affect the aggregate picture. The paper reviews results in Martin (1992) for the regression model with correlated errors where the coefficients of the variance matrix are assumed either known or fixed. The problems of applying the statistics in spatial econometric modeling are discussed. An application is reported which considers diagnostics for the mean function and highlights cases that might influence estimates of the parameter of the error model. Different ways of assessing the influence of cases are also described.     

TESTING THE SPATIAL SCALE AND THE DYNAMIC STRUCTURE IN REGIONAL MODELS (A CONTRIBUTION TO SPATIAL ECONOMETRIC SPECIFICATION ANALYSIS)*

This article addresses the problem of specification uncertainty in modeling spatial economic theories in stochastic form. It is ascertained that the traditional approach to spatial econometric modeling does not adequately deal with the type and extent of specification uncertainty commonly encountered in spatial economic analyses. Two alternative spatial econometric modeling procedures proposed in the literature are reviewed and shown to be suitable for analyzing systematically two sources of specification uncertainty, viz., the level of aggregation and the spatio-temporal dynamic structure in multiregional econometric models. The usefulness of one of these specification procedures is illustrated by the construction of a simple multiregional model for The Netherlands.     

A TRANSLOG APPROACH TO CONSUMER SPATIAL BEHAVIOR*

With the view that travel behavior stems from the principle of utility maximization, in this paper I present a spatial translog demand model that accounts for interdependence among travel alternatives and that handles varying elasticities of substitution for various destination pairs. Using simulation as the mode of inquiry, this model describes the effect of spatial size, spatial configuration, and spatial substitution on spatial interaction. In addition to indicating how varying spatial sizes and configurations affect the average trip length and the trip making pattern, the simulation results also point out the possible effect of having spatially dependent locations in the system. Competing destinations increase the attractiveness of nearby locations, and complementary destinations reduce the impeding effect of space. The model is primarily relevant to the demand for shopping trips.     

SPATIAL ECONOMETRIC MODELING OF ORIGIN‐DESTINATION FLOWS*

ABSTRACT Standard spatial autoregressive models rely on spatial weight structures constructed to model dependence among n regions. Ways of parsimoniously modeling the connectivity among the sample of N=n² origin‐destination (OD) pairs that arise in a closed system of interregional flows has remained a stumbling block. We overcome this problem by proposing spatial weight structures that model dependence among the N OD pairs in a fashion consistent with standard spatial autoregressive models. This results in a family of spatial OD models introduced here that represent an extension of the spatial regression models described in Anselin (1988) .