碳交易背景下考虑公平关切的双渠道闭环供应链定价决策

考虑到碳交易政策和公平偏好会影响双渠道闭环供应链定价决策，分别构建碳交易背景下公平中性、零售商公平关切信息对称与不对称时双渠道闭环供应链进行最优决策的Stackelberg动态博弈模型。通过求解各个均衡解，研究各个均衡解与制造商和零售商公平关切的关系。通过数值算例分析，着重考虑零售商公平关切信息对称与不对称时制造商和零售商公平关切对双闭环供应链最优定价决策的影响，并进行对比分析。研究结果表明：无论零售商公平关切信息对称还是不对称，新产品的销售价格与制造商和零售商公平关切都成正比，再制品的销售价格不受公平关切的影响；新产品的市场需求与制造商和零售商公平关切都成反比，再制品的市场需求与制造商和零售商的公平关切都成正比；公平关切会降低企业利润，公平关切信息不对称会加剧这一现象。     

Impact of China on trade in electronic products

Using 6-digit product-level data of exports in electronics, this paper finds robust evidence that China's exports adversely affect both the intensive export margin and the extensive export margin of its competitors for the 1992–2018 period. The displacement effects of China's exports on the intensive margin apply especially for the group of intermediate and capital electronic goods and are much more robust and significantly larger in magnitude than the displacement effects found in other studies using aggregated trade data. Finally, we find that China's displacement effect is increasing in China's advantage relative to its competitors in terms of human capital index and internet access of its population.     

数字经济发展、双元审计质量与企业创新持续性

创新持续性是国民经济高质量发展的重要引擎，对实体企业的长期成长有重大影响。基于2011—2020年中国A股非金融类上市公司数据，从双元审计角度实证研究了数字经济发展对企业创新持续性的影响。研究发现，数字经济发展不仅会显著推动企业创新持续性，还能通过提高双元审计质量进一步增强企业创新持续性。进一步研究发现，数字经济发展对企业创新持续性的促进作用在非国有企业和中小规模企业中更显著。     

The effect of settler farming on indigenous agriculture: Evidence from Italian Libya

What effect did the settlement of European farmers have on the indigenous agricultural sector during the colonial period? On the one hand, European immigrants imported skills and capital but, on the other, they took control of local resources. By looking at the short-term effect of Italian farming in colonial Libya, I shed new light on this question. Through regression analysis on a novel village dataset covering the entire country, I show that, in 1939, proximity to Italian farms was associated with significantly lower land productivity relative to distant locations. Lower yields can be explained by the adoption of land-extensive cultivation techniques, implemented by indigenous farmers to counteract a labour drain operated by Italian farms through factor markets. The combined mitigating effect of monetary wages and land-extensive farming only partially compensated for the fall in income linked to reduced land productivity.     

“Love for variety,” outside option and extensive margin of demand

The paper models a uniform-price Bertrand-price-competition in a differentiated product oligopoly market, where the buyers' preference shows “love for variety.” The buyers differ from each other in their valuation of the differentiated product with a common outside option available to all. The model endogenously determines both the extensive and intensive margin of demand and the equilibrium number of varieties in the differentiated product market. It shows that in such a framework complementarity exists at the extensive margin of demand even in the presence of demand substitutability between the varieties. The results apply to the competition between brick and mortar shops and malls.