“一带一路”跨国技术溢出网络空间演化与路径识别——加权复杂网络分析视角

运用加权复杂网络分析法对“一带一路”跨国技术溢出网络的空间格局演化、板块间技术溢出机制及国家间主要技术溢出路径进行分析，结果发现：①网络技术溢出强度提升显著，但呈偏态分布，仅有少数国家存在技术溢出，多数国家扮演着技术吸收者的角色；②网络呈现“核心-边缘”结构，中国、韩国和俄罗斯发挥着“发动机”、“传导”和“桥梁”的功效；③由中国、韩国等5国构成的板块一是“一带一路”跨国技术溢出的核心阵地，由俄罗斯等11国构成的板块二接收来自板块一的技术溢出，并将技术溢出动能向其它板块传递，由其余114国构成的板块三作为净受益者，是技术溢出动能传递路径的最终环节；④技术溢出路径既有空间依赖也有新的路径创造。技术主要被核心国家和发达国家吸收转化，体现出固定区域技术溢出的自我强化和反势能技术流特点。新增路径主要指向欠发达国家，表明越来越多的欠发达国家与核心国家产生技术联系并从中受益。     

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正2017中欧班列(重庆)开行数量实现重大突破,今年将开行1000班以上市政府官网发布数据,中欧班列(重庆)2017年开行数量实现突破,开行663班,提前两个月实现开行500班目标。累计开行超过1500班,约占中欧班列开行总量的四分之一。同时,进一步开拓霍尔果斯、满洲里、二连浩特3个进出境口岸,并实现常态运行,集结点和分拨点增加到10余个国家30多个城市;国际邮包业务常态化、规模化。另据重庆市物流办统计,2018年1月,     

The impact of COVID-19 on seasoned equity offering: Evidence from China

This study examines the impact from the COVID-19 pandemic on the association between Chinese firms' SEO announcements and market reaction afterwards. Our findings indicate that market investors would respond more negatively to the SEO announcements and undergo more SEO underpricing for firms from regions significantly affected by the pandemic than those from the less-affected regions. Furthermore, higher CSR scores and more involvements in accounting conservatism could mitigate these effects. The main mechanism of the moderating effect from CSR performance and accounting conservatism is that CSR investment and accounting conservatism could lessen information asymmetry between the SEO announced firms and outside investors. Finally, we document that the main motivation of SEO issuance during the pandemic is market timing.     

系统传导与多元适应:北京控规单元的演进与探索

控规单元是控制性详细规划的基本要素,是规划管控的空间网格和实施管理的基本平台.系统梳理了北京控规及控规单元从定量迈向统筹的发展历程,总结了两级单元的规划要点及其面临的需求与挑战,并立足国土空间规划体系构建的时代背景,创新提出了街区、街坊、地块的三级控规单元,详细论述了新一轮控规编制与管理的基本思路与模式方法,以全面加强控规在规划体系中有序传导以及面向实施、面向治理的多元适应能力.控规单元的探索实践有助于加深对特大城市国土空间发展建设的规律认知,为详细规划的改革探索提供思路借鉴.     

Business characteristics and efficiency of rural tourism enterprises: an empirical study from China

The booming rural tourism (RT) has broadened ways for rural revitalization and poverty alleviation strategy in China. Rural tourism enterprises (RTEs), as the core operator and a hinge delivering its benefits to rural communities, play a critical role in the achievement of RT expectation on rural revitalization. To address the research gap in business characteristics and efficiency of RTEs, and make the theoretical contribution to rural business and tourism management, this study collected and analyzed the business data with investors or managers of 60 national-class RTEs in Jiangsu Province, north Yangtze River Delta of China. The results showed that business characteristics of RTEs varied with their property, business strategy, and rural industrial base. Flexible and sustainable business operation and comprehensive regional development have a profound influence on business efficiency that presented multi spatial disparity from inter-regional and intra-regional views, respectively. In addition, the political and practical implications on rural business and RTEs for research and practice were also discussed.     

Conditional density forecast of China’s energy demand via QRNN model

We propose a new method for conditional density forecast of China’s energy demand through quantile regression neural network (QRNN). This method has at least two advantages. First, it is flexible to explore the true nonlinearity in the energy demand system via neural network structure. Second, it is able to describe the whole conditional distribution of energy demand via quantile regression. In the empirical study on China’s energy demand, QRNN outperforms several classical methods in terms of forecast accuracy both in-sample and out-of-sample. Considering China’s economic and social environment, we set a scenario for predictors and forecast the conditional density of China’s energy demand from 2015 to 2020. The empirical results show that the conditional density curve moves to right and its dispersion increases over time, which indicates that the energy demand in China will keep growing with an average annual rate of 9.672% and its uncertainty is enlarged with 42.210%.     

平台战略内核：网络效应概念演进、测度方式与研究前沿

大量研究虽以平台战略为主题，但并未将网络效应这一平台内核特征纳入分析建模，使得研究缺乏理论深度。采用文献计量和内容分析相结合的方法对网络效应相关研究进行梳理。分析发现：网络效应研究经历了3次理论演进，即同边网络效应向跨边网络效应演进（内容）、网络效应是什么向网络效应有何影响演进（作用）、网络正效应向网络负效应演进（后果）。三大演进从网络效应测度方式和行业情境中亦可窥见。结合关键词突变分析，发现网络效应最新研究已开始从关注网络效应“后果”转向“前因”考察。结合战略管理最新研究趋势，提出未来网络效应前因研究可以从个体行为、关系嵌入、种群生态、制度环境4个层面展开。特别是随着平台模式从消费互联网向产业互联网延伸，网络效应作用和激发方式是亟待关注的研究议题。     

世界经济两大板块变化趋势研判

百年变局在经济上的一个重要表现就是,发展中国家作为一个整体自20世纪90年代初冷战结束以来,获得了显著高于发达国家的经济增长率.在21世纪第一个十年,发展中国家继续保持了对发达国家的经济增速优势.但在第二个十年中,这种增速优势有所减少.资源价格、发达国家进口需求和国际直接投资流动,在最近十年出现了与经济全球化黄金时期不同的表现.2020年发生的疫情及其宏观经济政策效应,从长远看也可能给发展中国家的相对经济增长带来不利影响.针对发展中国家经济发展外部环境的重要变化,中国提出的"双循环"新发展格局应是一种积极和及时的回应.在新方针指导下,发展中国家需要以更加有效的方式做好改革开放.     

浅析内部经济责任审计风险与防范

当今国家注重开展廉洁教育,因此对领导干部的经济收支进行严格监控的工作便应运而生。各国对于审计情况的规定各不相同,我国把审计工作的重心放在了行政事业单位的内部,行政机关工作人员的工作过程受到严格的规制,是对党政机关从事各种活动进行监督和管控的有效方式。内部经济责任审计是一种特殊的审计形式,它独具风格的审计体系建立在受托性质的责任关系上。因此本文将对内部经济责任审计制度进行深入分析,首先了解内部经济责任审计概念特点,从而掌握这项制度存在的风险,以此提出具体的解决措施。通过完善内部经济责任审计制度,推动风险调控系统的建立,实现行政事业系统健康持续发展。