旅游上市公司股权结构对经营绩效的影响——以成长性为调节变量

本文选取了2007年～2009年间23家旅游上市公司为样本,系统探究了旅游上市公司股权结构与经营绩效间的线性关系、二次曲线关系以及成长性的调节效应,研究发现：旅游上市公司的股权结构与经营绩效间不存在显著的线性关系,但是,前5大股东以及前10大股东持股比例与经营绩效呈显著的倒U型关系,国有股比例以及社会公众股比例与经营绩效也呈显著倒u型关系,此外。成长性在第1大股东持股比例以及国有股比例和社会公众股比例影响旅游上市公司经营绩效的过程中,发挥了显著的调节作用。     

旅游对我国区域经济增长及其敛散性的影响——基于1997年～2010年省际面板数据的实证分析

本文以Barro和Sala-i-Martin的收敛假说为理论基础,利用面板模型探讨了1997年～2010年间旅游业发展对我国总体国民经济及东、中、西部地区区域经济增长及其敛散性的影响。结论显示:1997年～2010年间,全国及东、中、西部地区经济增长均呈发散趋势;旅游发展对全国及东、中、西部地区区域内经济增长及其差距的缩小产生了积极影响。     

国内外旅游服务供应链及复杂网络相关研究综述与启示

本文提出了旅游服务供应链研究的基本框架,综述了旅游服务供应链研究中有关供应链内涵、供应链网络结构、供应链管理和供应链评价方面的内容。在此基础上,文章认为,旅游服务供应链的网络结构研究有待深化、管理研究应加强宏观角度的研究、评价研究应增加评价维度。同时,通过对复杂网络理论内容的介绍,文章提出了旅游服务供应链的复杂网络特征：有向图,节点随机增长但具有非对称性,遵循择优选择机制以及局域性。最后,提出了未来旅游服务供应网络的研究方向。     

集群社会资本对乡村民宿企业成长的影响研究——以丹霞山两村为例

采用质性研究方法,以丹霞山两村为例,探析集群社会资本对乡村民宿企业成长的影响机制。研究发现：集群社会资本由个体社会资本（企业纵向联系、市场网络和个人资源）和集体社会资本（社区合作网络和公共资源）构成。乡村民宿获取个体社会资本的存量取决于关系质量和关系数量,前者有利于降低成本、增加异质资源,后者能够补足企业综合性基础;乡村民宿吸纳集体社会资本的程度在于资源共享度和网络紧密度,前者决定了集体资源的存量,后者制约着民宿吸收转化集体资源的程度。个体社会资本影响企业的初创和生存,集体社会资本制约或促进企业的持续发展,两者相互作用共同影响企业成长。从集群社会资本视角可深化理解乡村民宿企业成长的机理,为我国乡村民宿业发展乃至乡村振兴路径提供指导。     

全球城市的研究脉络、理论论争与前沿领域

全球城市是控制和影响全球政治经济文化的枢纽型城市。系统梳理中外全球城市研究热点、理论争论及研究领域演化,比较东西方全球城市研究视角提出新国际形势下全球城市研究前沿及其可能范式。研究发现：①全球城市被分为超全球城市、新兴全球城市及全球城市国家三类,重点探讨了全球城市的起源与概念、成长机理与类型划分、规模—网络—等级和专业化分工等;②中国学界从引介世界城市概念及其识别指标、形成机制等领域逐渐转向全球城市的功能与作用、比较与评价、培育策略等。③新全球化形势下全球城市研究应关注尺度（政治）与全球城市构建、动力、制度与培育实践导向三层次展望提出世界形势变革背景下全球城市研究重点。     

定边郝滩东汉壁画墓绿色底层颜料分析研究

本研究以定边郝滩东汉壁画墓中绿色底层为研究对象,采用偏光显微镜(PLM)、带能谱的扫描电子显微镜(SEM/EDS)、X射线衍射仪(XRD)和拉曼光谱(RS)分析了绿色底层的成分与物相,同时和四种已知国外绿土相比较,得出绿色底色为绿土,对其进行深入分析研究以期为考古学和后期文物保护工作提供科学信息。     

War and city size: The asymmetric effects of the Spanish Civil War

Populations are affected by shocks of different kinds, and wars, a priori, may be among the most prominent. This article studies the effect of the Spanish Civil War (1936–1939) shock on the distribution of population, especially on cities. One of the main contributions of this study is that it underlines the importance of distinguishing between winning and losing sides, an aspect which until now has been largely overlooked. While previous research on war shocks has also tended to be concerned with inter-state wars, this paper concentrates on a civil war. We take advantage of a new, long-term, annual data set. Our results show that, overall, the Spanish Civil War did not have a significant effect on city growth. However, we also find a significant and negative effect in the growth of cities that aligned themselves with the losing side. These results are robust to heterogeneity in the effect of the war shock, measured as war severity and duration. Although short lived, the temporary effect on growth results in a permanent effect on the size of cities on the losing side.     

Firm-level productivity growth returns of social capital: Evidence from Western Europe

We analyze the firm-level labor productivity growth returns of social capital—defined as a synthetic measure of “generalized trust,” “active participation,” and “social norms”—using a large sample of manufacturing firms in France, Germany, Italy, Portugal, and Spain. We find that firms' labor productivity growth is higher in areas with a better social capital endowment. The positive returns of social capital are, nevertheless, unevenly distributed across firms, with smaller, less productive, less capital-endowed, and low-tech firms benefitting the most from operating in strong social capital ecosystems.     

Lithium extractivism and water injustices in the Salar de Atacama,Chile: The colonial shadow of green electromobility

This paper analyzes the linkages and feedback between green electromobility, lithium extractivism, and water injustices affecting the Atacameño's indigenous communities in the Salar de Atacama basin (Atacama Salt Flats). Currently, lithium is in high demand in the international markets as a strategic resource for the green electromobility industry, which represents part of the Global North policies established by the Paris Agreement to mitigate climate change's effects. Using both documentary and ethnographic methods based mainly on semi-structured interviews conducted with Atacameño people, public officials, and lithium companies' representatives and workers, we propose a decolonial interpretation of lithium extractivism in brine mining through the lens of Latin American political ecology combined with a decolonial and water justice approach. The results demonstrate how the linkages and feedback between global and local dynamics of lithium mining in the Salar de Atacama constitute a form of green extractivism that further replicates the historical inequalities between the Northern and Southern hemispheres and especially affects the indigenous Andean territories and the water ecosystems in the Global South. We call this phenomenon the colonial shadow of green electromobility. We conclude by exposing the need to rethink global proposals addressing climate change by reducing the commodity demand and aiming for water justice at global and local levels.     

Sectoral diversification as insurance against economic instability

This paper examines the extent to which sectoral diversification can act as an insurance mechanism against fluctuations in regional gross value‐added growth rates. Portfolio theory is applied to the growth‐instability properties of German districts. Furthermore, a comprehensive diversification measure is defined. Stochastic Frontier Analysis is deployed in order to estimate whether diversification allows regions to achieve more efficient growth‐instability combinations. The results confirm that diversification does generate such effects. Spatial interactions do also play a role: The effects are less pronounced for regions whose economic performance is mainly driven by the surrounding regions.