丝绸之路河西走廊物流业效率演化分析

构建了分析河西走廊物流业效率演化的指标体系,基于2009-2017年河西走廊物流业统计数据,运用DEA-Malmquist指数法测算了各市物流业效率和技术进步率,采用Tobit回归模型分析了该地区物流业效率的影响因素,并从省内、省域间、各经济区域间三个方面进行了对比分析。实证分析表明,相较于全国各省市地区,河西走廊物流业整体水平较低,物流业效率和技术进步率的强正相关性普遍存在,其物流业发展对政策偏向具有较强的依赖性;同时,技术进步率低下和基础设施匮乏也是制约物流业发展的重要因素。基于此,从政策照顾与资金投入、科技进步与管理水平和市场运营与体系建设三个方面,为河西走廊物流业发展提出了建议与改善措施。     

Monthly wood supply behavior of associated forest owners in Austria—Insights from the analysis of a micro-econometric panel

This paper examines the wood supply from non-industrial private forest owners in Austria. The main novelty of this study is threefold. First, the underlying dataset is based on monthly wood supply. This enables an analysis of seasonal supply behavior, which is found to be different in relation to the size of the forestland. Second, it represents an original study with a dataset from a Central European country whose forest owners are apparently much more fragmented than their Scandinavian or North American counterparts. And third, the study introduces a windfall variable that effectively corrects for a market-relevant storm event. With respect to methodology, a random effects Tobit model is applied. Additionally, a Chamberlain-like term is included in the regression to deal with a possible bias generated through the correlation of regressors and unobserved heterogeneity.     

基于DEA-Tobit模型的马铃薯生产效率分析——以甘肃省定西市为例

随着社会的进步和农村经济的发展,农业生产效率已成为制约农民收入、造成农村落后的关键因素。中国是马铃薯的生产大国,其生产效率的提高对我国马铃薯产业的持续发展和保障我国的粮食安全有着很重要的意义。研究基于2014年对甘肃省定西市样本农户马铃薯种植的调查数据,采用DEA模型测算农户种植马铃薯的生产效率,并利用Tobit模型对影响马铃薯生产效率的因素进行分析。研究表明:农户生产马铃薯的综合技术效率较低,规模效率成为制约其生产效率提升的瓶颈;家庭纯收入、马铃薯的种植比例和引进新品种3个变量在0.01水平下对生产效率的影响达到显著;户主的年纪在0.05水平下对生产效率的影响达到显著;马铃薯的收购价格、农户是否参加合作社和种植培训、离农贸市场距离与马铃薯的生产效率间存在不显著的正相关关系。基于以上调研提出了鼓励土地流转、提高生产技术水平、加大农民生产技能培训力度、多方面增加农民收入和合理布局农产品贸易市场等政策性建议。     

环境约束下中国工业企业创新效率评价及影响因素研究

本文应用SBM模型的改进DEA模型以及DEA-Tobit法对中国2006～2015年环境约束下工业企业技术创新效率及其影响因素进行实证分析,研究结果表明,非期望产出对企业效率评价结果有较大影响,北部沿海综合经济区的环境效率值最高;西北综合经济区、长江中游综合经济区、黄河中游综合经济区、东北综合经济区环境效率值相对较差。政府支持力度、企业规模与环境约束下的工业企业技术创新效率呈正相关关系,企业聚集度与其呈负相关关系,而企业技术水平与从业人员素质对其影响较小。     

Who buys newspapers in Spain? An analysis of the determinants of the probability to buy newspapers and of the amount spent

In this paper, we examine the determinants of household consumption of newspapers and the amount spent on their purchase by considering several explanatory variables related to household characteristics and the main household wage earner. Results show that the variables have quite similar effects on both the relative probability of buying newspapers and the amount spent. The key variables are the age and occupational status of the main wage earner, the number of household members, income and having to pay for the house, as well as a number of geographical variables. However, certain differences are also observed. The most important is the education of the main wage earner: while its effect on buying newspapers is very small (only those who did not complete primary education are less likely to buy), its effect on the amount spent increases with the level of education. As other studies of cultural goods and services consumption have suggested, education and occupational status are more relevant determinants than income.     

长江经济带文化与旅游产业协调发展及其影响因素研究

以长江经济带11省市为研究对象,基于2010—2019年面板数据,运用耦合协调、Tboit模型分析长江经济带文化与旅游产业协调发展及影响因素。结果表明：文旅产业协调水平整体呈上升趋势,总体均值由0.446增至0.627,中上游协调发展较为迟缓,下游处于领先水平,梯度差异较为明显;文旅产业协调发展影响因素差异性较大,经济发展、对外开放、产业结构、城镇化均是文旅产业协调发展的重要驱动因素。     

基于超效率SBM模型的珠三角区域物流效率及影响因素分析

物流效率是反映物流绩效水平的重要指标.以珠三角城市群9个地市(不含香港特别行政区和澳门特别行政区)为研究对象,基于珠三角9个地市2010—2019年的面板数据,采用超效率SBM模型和GM L指数,测算珠三角城市群各地市的物流效率值及变动趋势.研究表明:技术进步是珠三角区域物流效率提升的主要因素,综合管理水平有待提高;珠三角区域的物流效率总体处于中等偏上效率水平且变化不大,深圳市物流效率水平提升较快且效率最高,东莞市物流效率最低,珠海市效率值起伏最为明显,整个测算期间呈W形走势.为进一步探讨外部因素对珠三角区域物流效率的影响程度,选取Tobit模型进行回归分析,发现区位优势对珠三角地区物流效率的提升起到了重要的作用.     

江苏省高新技术产业园区科创效率及影响因素

基于2016—2020年江苏省国家高新区面板数据,运用数据包络分析（DEA）和Malmquist指数对江苏省国家高新区的静态和动态效率进行测算,并采用面板Tobit模型,探索影响江苏省国家高新区科创效率的原因。结果表明：江苏省国家高新区整体科创效率水平不高,规模效率低于纯技术效率,技术因素起到主要作用;全要素生产率总体稳定,大多高新区的技术进步指数提升但规模效率下降;地区开放程度对江苏省高新区科创效率有显著的正向影响;研发经费投入力度和经济发展水平有显著的负向影响。据此,可以从提升创新资源利用效率、提高对外开放水平、优化资源配置等方面完善,从而有效提高江苏省国家高新区科创效率。     

Exploring cruise ship passenger spending patterns in two Uruguayan ports of call

The cruise industry has become a significant component of the Uruguayan tourism economy in the last few years. The present study aims to provide a better understanding of the cruise industry by considering the expenditure of cruise ship passengers disembarking at the ports of call of Montevideo and Punta del Este as a key variable in the economic analysis of the costs and benefits. We estimate two cross-sectional regression models for cruise passenger expenditures, and show that the size of the group the visitors travel with and visitor mobility within the country are the most important variables to explain individual expenditure behaviour. We also include some management recommendations that policy-makers could implement in order to improve the economic profits from cruise ship tourism.