"一带一路"区域价值网结构演进与国家角色地位变迁 ——基于43国的社会网络动态分析

以"一带一路"沿线43个国家作为研究对象,基于2012—2018年的双边贸易数据矩阵,运用修正后的引力模型和社会网络法,考量"一带一路"沿线国家双边价值引力常数偏度、区域价值网演化、国家角色定位变迁.结果显示:中国、印度、俄罗斯、印度尼西亚在"一带一路"沿线国家中具有较大贸易影响力,与中国区域价值引力较大的国家主要是位于"一带"和"一路"前端的东盟和俄罗斯;"一带一路"区域存在中国、俄罗斯、波兰和匈牙利四个紧密关联的贸易中心,其他国家往往与地理上最接近的中心进行贸易,形成四大空间区域;中国"核心"和"桥梁"功能显著,与其他国家的贸易引力和网络粘度较高,已在价值网中居于强主导地位.     

长江经济带绿色金融对经济高质量发展的影响

基于2010—2019年长江经济带11个省（市）的面板数据,构建Tobit模型和中介效应模型,检验绿色金融对经济高质量发展的非线性效应及作用机制。研究发现,绿色金融与经济高质量发展呈“U”型关系,即随着绿色金融发展水平的提升,经济发展质量呈现出先下降后上升的变化趋势;市场化、政府干预对绿色金融与经济高质量发展之间的非线性关系均存在正向调节作用。作用机制分析结果表明,绿色金融通过缓解绿色技术创新的融资约束助力经济高质量发展,而传统技术创新表现为遮掩效应,在一定程度上掩盖了绿色金融对经济高质量发展的真实作用。     

Structure and evolution of the greenfield FDI network along the belt and road

Using bilateral greenfield investment projects data from 2003 to 2019 collected from fDi Markets, this study constructed the greenfield foreign direct investment networks along the Belt and Road (BR-GFNs). Based on a social network analysis, we investigated the structure of BR-GFNs at three levels. At the overall level, the BR-GFNs are characterized by small-world, reciprocity, and robustness. At the community level, the BR-GFNs form three communities: the east, south, and west. Lastly, at the national level, China, Russia, India, and Turkey occupy important positions in BR-GFNs, with relatively high resource control abilities. Moreover, we applied the quadratic assignment procedure to investigate the factors affecting the structural formation of the BR-GFNs. The results show that countries with less geographical, institutional, economic, and cultural distance, higher political affinity, and possibility of signing bilateral investment treaties are more likely to establish cross-border greenfield investments.     

Market integration of domestic and imported seafood: Insights from the Sydney Fish Market*

Australia has experienced a significant increase in seafood imports over the past two decades. Concurrently, Australian seafood producers have raised concerns that the low market prices of imported fish may negatively affect the prices of domestically produced seafood and, subsequently, the profitability of the Australian fishing industries. To validate this concern, this study examines the relationship between prices of domestically produced seafood and imported fish. Price data from the Sydney Fish Market (SFM), Australia’s largest auction wholesale fish market and fish import data are used for a cointegration analysis which is conducted using the bivariate Johansen test. Results indicate that prices of most domestic species traded within the SFM are not cointegrated, implying that they largely develop independently of each other. However, imported fish, particularly fresh imports, were found to be cointegrated with Australian produced fresh fish supplies traded on the SFM. Although the law of one price (LOP) was only confirmed to hold for some price pairs, the results suggest a partial substitution relationship between imports and domestically caught fish. This implies that prices of domestically produced fish within the Australian market are likely impacted by price dynamics within the international seafood market.     

“一带一路”倡议与企业国际化程度——基于制造业上市公司的证据北大核心

本文将“一带一路”倡议视为一项准自然实验,基于2007~2020年A股制造业上市公司数据,运用双重差分模型探究“一带一路”倡议对企业国际化程度的影响。研究发现,“一带一路”倡议能够显著提升企业国际化程度。作用机制研究发现,“一带一路”倡议可以通过缓解融资约束和提升研发强度提升企业国际化程度。异质性检验发现,“一带一路”倡议能够提升大规模企业和中小规模企业国际化程度,且对中小规模企业国际化程度的提升效应更加明显;相对于内向型城市节点,“一带一路”倡议显著提升了外向型节点城市企业国际化程度。进一步地,“一带一路”倡议能够显著促进企业国际化范围的扩张。