欠发达地区城乡关联度综合评价研究——以广西为例

文章在评述相关文献的基础上,应用广西统计年鉴材料,引入因子分析法和聚类分析法,构建了城乡关联度综合评价指标体系。对广西14个地级市的城乡关联度进行了综合评价,并对其空间格局特征开展了研究。研究结果表明：广西城乡关联度水平地域差异显著,聚类分析可将广西城乡关联度水平分为四个等级。从整体上说,广西城乡关联发展仍存在明显的城乡二元结构,在发展过程中应加快城市化进程,努力提高城乡关联发展水平。     

The evolution of inter-organisational social capital with foreign customers: Its direct and interactive effects on SMEs’ foreign performance

Taking a longitudinal approach, we analyze how the evolution of different dimensions of social capital between an SME (Small and Medium enterprise) and its key foreign customers directly influences the firm’s foreign performance growth. Moreover, we utilize a contingency approach by introducing two dyad-specific characteristics into the analysis: psychic and geographic interorganizational distances. Our findings contribute to the international business literature on social capital and suggest that while an investment in social capital with distant foreign customers always reinforces SMEs’ foreign performance development, relational and cognitive social capital have the same positive effects only for low levels of interorganizational psychic distance.     

Sourcing patterns of export‐platform foreign affiliates: The case of Japanese affiliates in Mexico

This study investigates the sourcing patterns of Japanese export‐platform foreign affiliates in Mexico, which mainly export to the United States and Canada. We propose a novel approach to estimate intermediate input elasticities of exports by sourcing country. We find that, on average, Japanese export‐platform foreign affiliates in Mexico source intermediate inputs from third countries, including the United States and Canada, rather than from Japan and Mexico, suggesting that Japanese export‐platform foreign affiliates in Mexico are mainly integrated into the vertical production networks back and forth between Mexico, the United States and Canada. In turn, Japanese foreign affiliates selling domestically in Mexico source intermediate inputs not only within the North American Free Trade Agreement countries but also from Japan. In addition, we find that export‐platform foreign affiliates in Mexico use more labour‐intensive production than do foreign affiliates selling domestically in Mexico. This suggests that saving labour costs is one of the motives for export‐platform foreign direct investment in Mexico.     

Informational Networks, Entrepreneurial Action and Performance

This paper develops a model that incorporates personal and business networks, firm action, and performance based on the existing literature. It explores the links between information and entrepreneurial-type action, and action and performance. Survey data was collected from a sample of 100 manufacturing firms in Thailand. Results show that entrepreneurs value the information they receive from their networks. However, there is little statistical support for tangible links between personal or business networks and entrepreneurial action and performance, or between action and performance.     

Keiretsu centrality — profits and profit stability: A power dependence perspective

Prior studies compare keiretsu member firm and independent firm performance. Here, we use historical and power dependence perspectives to theorize that the Japanese keiretsu system primarily benefits the most central firms. We test this by examining the performance of two types of keiretsu firms (central firms and other member firms) within two types of keiretsu (horizontal and vertical). We hypothesize and find that: (1) central vertical keiretsu firms are more profitable than central horizontal keiretsu firms; (2) central horizontal keiretsu firms have greater profit stability than central vertical keiretsu firms; (3) central vertical keiretsu firms are more profitable than non-central vertical keiretsu firms; and (4) central horizontal keiretsu firms have greater profit stability than non-central horizontal keiretsu firms. Implications for managers and future research directions are discussed.     

Agency costs of vertical integration—the case of family firms,investor‐owned firms and cooperatives in the French wine industry

Vertical integration theory has long suggested internal costs related to changes in incentives due to vertical integration, which means that vertical integration may lead to agency costs. In this work, we specify the notion of agency costs of vertical integration and extend Ang et al. (2000)'s measurement of agency costs to provide an empirical assessment of these costs in the French wine industry. Our econometric analysis finds that the agency costs of vertical integration may reach 2–3% of sales. It also showed that operating expenses of vertical integration are lower for cooperatives than for other firms, while vertical integration is less rewarding for them. This raises questions on the relation between agency costs in cooperatives and their performance.     

Global trade impacts of increasing Europe's bioenergy demand

European governments are rapidly turning to biomass to comply with the EU's legislated renewable energy targets for 2020 and 2030. To do so, EU member states will likely have to increase imports of biomass from timber rich regions, which will undoubtedly disrupt international wood product markets. In this study, a static global forest trade model of coniferous wood products is used to examine the effects of expanded demand for wood pellets in Europe to generate reliable electricity. Positive mathematical programming (PMP) is used to calibrate the model to 2012 bilateral trade flows. To assess the impact of increased wood-pellet demand on global forest products, we consider a scenario where EU demand for wood pellets doubles. Model results suggest increases in the world prices of industrial roundwood (1%), particleboard ($34/m³), fibreboard ($30/m³), pulp ($65/t) and pellets (71% to 128%), while the prices of sawnwood and plywood & veneer are projected to fall by $12/m³ and $4/m³, respectively. The gains and losses are unevenly distributed between timber rich and timber poor regions; Russia, Canada and the U.S. experience large net welfare gains of $706 million, $544 million and $416 million, respectively, while Asia loses $1.8 billion. In the forest products sector, the gains outweigh losses with economic benefits increasing by some $4.9 billion, but this is a cost to the consumers of electricity and/or taxpayers in the regions implementing these renewable energy policies. The price of wood pellets is projected to rise between $107 and $154 per tonne. The findings highlight the need to account for the interconnections among softwood forest products globally.     

在高层建筑结构设计中如何考虑温度竖向作用

本文讨论了下列几方面的问题：为什么要考虑温度竖向作用;温度竖向作用的类型;温度竖向作用的特点;按承载能力极限状态考虑温度竖向作用;按正常使用极限状态考虑温度竖向作用。     

垂直文学网站商业模式研究

垂直文学网站一直在不断地探索自己的商业模式。本文首先解释了什么是商业模式,然后介绍了垂直文学网站的发展现状,最后对垂直文学网站的商业模式做了系统深入的分析。     

Cross-hedging strategies between CDS spreads and option volatility during crises

This paper presents a joint analysis of the term structure of credit default swap (CDS) spreads and the implied volatility surface for five European countries from 2007 to 2012, a sample period covering both the Global Financial Crisis (GFC) and the European debt crisis. We analyze to which extent effective cross-hedges can be performed between the credit and equity derivatives markets during these two crises. We find that during a global crisis a breakdown of the relationship between credit risk and equity volatility may occur, jeopardizing any cross-hedging strategy, which happened during the GFC. This stands in sharp contrast to the more localized European debt crisis, during which this fundamental relationship was preserved despite turbulent market conditions for both the CDS and volatility markets.