How household food shopping behaviors changed during COVID-19 lockdown period: Evidence from Beijing,China

The COVID-19 pandemic has had a great impact on food shopping behavior. However, changes in food shopping behavior and related decision-making mechanisms remain unexplored. This study conducted a face-to-face questionnaire survey with 900 residents in three communities in Haidian, Beijing, China, to analyze food shopping behavior during the periods of pre-lockdown, lockdown (January–March 2020), and post-lockdown. Our results indicated that the preference for fresh food e-commerce shopping was accelerated by the lockdown with the usage rate increasing by 48%; the wet markets were seriously hit by the lockdown policy and had not fully recovered by the post-lockdown period (with a 75% reduction in the usage rate during lockdown). The psychological mechanisms of changes in food shopping behavior revealed that the context (e.g., community facilities) and the perceived risk of COVID-19 were two significant factors impacting the four shopping choices investigated. Specifically, the context factors affected behavior directly for supermarkets and convenience stores and indirectly for e-commerce and wet markets. The findings are expected to help in guiding emergency responses during a future pandemic as well as the long-term construction of food supply facilities.     

政府补助对科技中小型企业成长的影响机理

采用创业板2011—2016年251家科技型中小企业数据，从研发经费投入和技术人员投入两个方面检验技术创新投入在政府补助对企业成长影响的中介作用，以及市场化进程和要素市场发育程度的调节作用。实证研究发现：①研发经费投入在政府补助对企业成长的影响中有中介作用，技术人员投入在政府补助对企业成长的影响中中介作用不明显；②市场化进程越高的地区，政府补助通过研发经费投入对企业成长的影响越强，政府补助通过技术人员投入对企业成长的影响也越强；③要素市场发育程度越好的地区，研发经费投入在政府补助与企业成长间的中介作用越强，技术人员投入在政府补助与企业成长间的中介作用也越强。     

家族企业创业导向与企业成长：社会情感财富与制度环境的调节作用

旨在研究家族企业创业导向对企业成长的影响，并探讨社会情感财富和制度环境在二者之间的调节作用。运用8个省份家族企业问卷调查数据进行分析检验，结果表明：①家族企业创业导向对企业成长具有显著正向影响；②社会情感财富不同对家族企业创业导向与企业成长关系的影响不同，家族控制正向调节家族企业创业导向与企业成长关系，家族代际传承意愿负向调节家族企业创业导向与企业成长关系，即随着家族控制意愿的增强或家族代际传承意愿的降低，家族企业创业导向对企业成长的影响增大；③制度环境正向调节家族企业创业导向与企业成长关系，即随着制度环境的改善，家族企业创业导向对企业成长的影响增大。     

对外直接投资影响我国创新能力的机制与实证研究

利用2003-2015年我国内地30个省份的省际面板数据，在概述对外直接投资影响一国创新能力作用机制的基础上，借鉴Lichtenberg和Pottelsberghe提出的国际研发溢出测算方法，从技术差距视角出发，运用面板门槛模型实证检验二者间的关系。结果显示：对外直接投资可以通过R&D成果反馈效应、并购整合效应以及产业前后向关联效应提升一国创新能力；在不同的门槛取值区间内，OFDI逆向技术溢出对创新能力提升的作用呈显著倒U型特征，只有在最优技术差距区间内才能发挥其最大效应。最后，在作用机制概述和实证研究结论基础上，从政府和企业两个层面提出政策建议。     

Does computer penetration increase farmers’ income? An empirical study from China

The diffusion and adoption of modern information technology provide new chance for China to close urban-rural income gap. This paper uses China's provincial panel data from 2002 to 2013 to investigate the effect of computer penetration on rural residents' income. A public program aiming to connect every village with broadband Internet and other rural facilities provides plausibly exogenous variation in rural residents' availability and adoption of the broadband Internet, which is used to explore the instrument variable for rural computer penetration. The results show that rural computer penetration tends to increase rural residents' income over time, but the average effect remains limited. The dynamic panel threshold effects model, which allows for both the threshold variable and other covariates to be endogenous, is further used to explore the constraints of the income-increase effect of rural computer penetration. It shows that the effect is at least doubled over the average effect estimated from instrument variables method, once the digital divide causes are removed. Our findings have important implications for the government to increase rural residents' income and reduce urban-rural income gap by encouraging rural computer usage and removing the digital divide.     

中国海洋产业增长极选择研究

21 世纪是海洋的世纪，海洋经济在国民经济中起着举足轻重的作用，合理的发展模式对推动海洋产业经济发展尤为重要。本文以增长极理论为指导，采用不平衡发展模式、主成分分析法及聚类分析法对中国海洋产业经济增长极选择进行实证分析，结果表明：中国应以海洋渔业、滨海旅游业及海洋交通运输业作为主导产业进行发展，并确定其海洋产业增长极的地位。以此为契机，本文还进一步分析评价了海洋产业增长极的发展状况，以确定海洋产业发展战略，为中国海洋产业经济增长极的培育及国家海洋产业经济发展提供参考支撑。     

财政支持乡村振兴战略的探索实践与对策建议——以宁波市象山县为例

实施乡村振兴战略是破解乡村发展困境、解决城乡发展不平衡、实现两个百年目标的重中之重工作,也为农业农村农民发展提供了要点、重点。本文以宁波市象山县为例,全面分析乡村建设中存在的问题和不足,结合县级财政政策、联系当地实际情况、借鉴县外优秀案例,提出具有一定操作性、针对性的对策建议。     

Who benefit from government-led microfinance projects? Evidence from rural China

Drawing from a unique dataset of 2356 Chinese villages, this paper assesses the anti-poverty effect of the largest government-led microfinance project in the developing world. We find that the project can significantly increase the income level in the targeted villages. The main engine of the project lies in the expansion of access to nonfarm activities. We also highlight the importance of institutional circumstance in the effectiveness of the project. Specifically, a more democratized village with less political connection to local governments reaps more benefits from its participation.     

High accruals momentum

We examine the information content of high accruals momentum defined as a string of high discretionary accruals for four consecutive years. We find that firms that consistently report high levels of discretionary accruals experience low subsequent returns. The results are robust after we control for annual levels of discretionary accruals for the estimation period of high accruals momentum. Furthermore, the predictive power of the high accruals momentum for future returns is strongly persistent even after the existing accruals anomaly disappears. Our results also show that the high accruals momentum impact is more pronounced for low growth firms, suggesting that the overpricing of stocks with high accruals momentum is driven by managerial discretion to manage earnings.     

数量驱动或创新驱动：异质型人力资本对经济增长的机制演进

基于1987-2017年中国省际面板数据，运用SYS-GMM模型研究异质型人力资本对经济增长的影响。在区分高级与基本人力资本基础上，基于招生率和收入维度，从全局和阶段差异视角剖析异质型人力资本对经济提速的机制演进。研究发现：全局而言，两种测度下基础和高级人力资本各自以数量及创新方式驱动经济增长，并呈现以数量驱动为主，数量、创新双驱动的增长模式；从演进视角看，两种测度均表明，高级人力资本创新驱动是新常态阶段经济增长的核心动力，但相比旧常态阶段，基础人力资本数量驱动日趋弱化并呈异质性；进一步研究表明，产业结构、城镇化及开放程度均对创新驱动有不同程度激励效应，而城镇化是挤出数量驱动的主要推手。