河西地区农牧地域分异与农牧耦合探讨

农牧耦合存在两种基本耦合类型:一是特定地域农(牧)生态系统中农牧业生产之间的内部耦合;二是不同地域农(牧)生态系统之间的农牧空间耦合。在对河西地区农牧空间耦合的自然环境、历史发展、现状结构和问题分析基础上,结合对农牧空间耦合的理论探讨,提出了河西地区农牧空间耦合的发展对策。     

产业结构软化及其对世界经济发展的影响

产业结构的状态总是随着经济发展的变化而处于不断变动之中。20世纪中期以来，以信息技术革命为核心的新技术革命的兴起加速了世界产业结构的全方位变革，出现了产业结构软化的趋势。产业结构软化趋势主要表现为产业结构服务化、高技术化、融合化和国际化，它是世界经济发展的必然结果，同时又对世界经济发展产生了重要的影响。     

干旱区绿洲城镇绿色基础设施网络构建 研究——以新疆阿拉尔市为例

随着全球气候变暖、生物多样性减少、生境破碎化等 环境问题日趋严重，“一带一路”沿线国家和地区在生态文明 建设上面临着共同的挑战。如何在有限的资源条件下合理布局 绿色基础设施以满足人类福祉的需求，仍是当前理论研究的热 点和景观管理实践的主要难题。以新疆阿拉尔市为例，基于形 态学空间格局分析、最小路径分析等方法识别对地区景观生态 格局具有重要影响的源地与廊道，通过补充战略点的方式对网 络进行优化，进而结合区域实际状况提出绿色基础设施网络的 构建思路。研究结果可为阿拉尔市及阿克苏地区生态修复和绿 地系统规划提供理论及实证依据，也为“一带一路”其他干旱 区城镇绿色基础设施布局与生态安全格局构建提供可资借鉴的 思路和方法。     

金融产业集聚的形成模式研究：全球视角与中国的选择

金融产业集聚的形成，本质上来源于经济的发展和演化并具有自组织变迁的规律。从世界金融中心的形成经验可以发现，金融产业集群的形成主要分为自发演化和嵌入发展两种不同模式。本文在对伦敦和新加坡这两种截然不同的金融集聚形成模式分析的基础上，归纳出金融产业集聚形成的主要因素，并对我国大力推进该产业集聚的发展提供对策建议。     

Resource‐seeking agglomeration: a study of market entry in the lodging industry

We analyze whether firms prefer collocating with incumbent firms when choosing among markets to enter, highlighting the role of resource‐seeking as a motivation for collocation. We propose that entrants will locate near others possessing resources that can spill over, but will avoid locations where existing firms will exploit spillovers without contributing. To test these propositions, we analyze the location decisions of 570 new hotels in Texas between 1992 and 2000. We find that hotels are attracted to markets with branded upscale hotels. Further, we find that owners of upscale hotels avoid markets with hotels without similar resources. Copyright © 2004 John Wiley & Sons, Ltd.     

Inference with Dependent Data in Accounting and Finance Applications

We review developments in conducting inference for model parameters in the presence of intertemporal and cross‐sectional dependence with an emphasis on panel data applications. We review the use of heteroskedasticity and autocorrelation consistent (HAC) standard error estimators, which include the standard clustered and multiway clustered estimators, and discuss alternative sample‐splitting inference procedures, such as the Fama–Macbeth procedure, within this context. We outline pros and cons of the different procedures. We then illustrate the properties of the discussed procedures within a simulation experiment designed to mimic the type of firm‐level panel data that might be encountered in accounting and finance applications. Our conclusion, based on theoretical properties and simulation performance, is that sample‐splitting procedures with suitably chosen splits are the most likely to deliver robust inferential statements with approximately correct coverage properties in the types of large, heterogeneous panels many researchers are likely to face.     

财政教育支出的农村减贫效应研究——基于网络空间结构的分析

运用修正的引力模型测算出我国财政教育支出的空间关联关系,以及财政教育支出对农村减贫的空间关联影响效应。实证结果表明：我国财政教育支出在空间关联上呈现出复杂、多线程的网络结构;区域间财政教育支出差异和人力资本差异与农村贫困联动矩阵呈现显著负相关,区域间技术发展水平差异和经济发展水平差异与农村贫困联动矩阵呈现显著正相关。加强我国农村贫困的治理,需要考虑财政教育支出的空间关联作用,实施定向的、梯度推进的区域协同策略。     

农村普惠金融发展空间差异与集聚效应

基于中国农村普惠金融发展的空间地理特征,依据2006-2015年30个省市相关数据,测算农村普惠金融水平;建立空间自回归模型(SLM)和空间误差模型(SEM)检验普惠金融发展空间集聚效应.结果发现:各省市农村普惠金融指数总体呈上升趋势,农村普惠金融发展空间相关性逐年增强,局部空间差异逐渐缩小.普惠金融集聚与农民收入变化之间存在正空间相关性,普惠金融水平的提高能够促进农民收入水平的提高.鉴此,应加强区域空间金融合作,提高保险业普惠度;加强地方政府之间交流合作,发挥普惠金融集聚辐射作用,推动农民收入水平进一步提高.     

Do monetary subjective well-being evaluations vary across space? Comparing continuous and discrete spatial heterogeneity

Using subjective well-being estimations, this study analyzes whether compensating variations vary across space using a cross-sectional data set from Chile. To achieve this goal, it describes and compares two econometric ways of modelling unobserved spatial heterogeneity. Both approaches allow compensating variations to vary across spatial units by assuming some distribution a priori. One method assumes that the spatial heterogeneity can be represented by a discrete distribution (a group of regions that share the same coefficient) and the other that the preferences can be represented by a continuous distribution (each region has a different coefficient). The results show that focusing just on the average estimates of compensating variations, as the applied studies have done so far, masks useful local variation. More empirical studies are needed to assess the advantages and disadvantages of both econometric approaches and how their results compare across a wide range of conditions and samples.