社会网络视角下的创客资本研究

揭示创客资本的内涵与特征，有助于深层次挖掘创客与经济社会发展之间的关系。运用关键词共现、社会网络分析和扎根理论方法，对148篇文献、21位由创客与众创空间负责人等构成研究对象的访谈资料和网络文本资料展开分析。社会网络分析发现互联网、数字经济、分享经济等是创客发展的重要驱动力，创客可借助众创空间社会网络跳出时空局限，运用网络资源参与大众创新活动，并与社会网络形成价值共创关系，推动协同创新和平台生态系统构建；扎根理论分析结果表明，创意制造、开放协同、网络共生、边际非稀缺是创客资本的4个核心特征，并印证了社会网络分析结果。基于上述分析结果，进一步基于社会网络理论界定了创客资本的内涵，提出未来需要深度挖掘创客资本与网络场景之间的交互机制及其结果效应。     

The Benefit of Frequent Corporate Philanthropy

Applying behavioural economic theory, we argue that the frequency of philanthropic activity is important in determining corporate philanthropy's economic outcome. Using Chinese data from 2003 to 2016, we find that firms with more frequent philanthropic activities obtain more government subsidies than firms that only engage in one-off charitable donations. Firms with better corporate governance, such as higher management ownership and more independent directors, are more likely to adopt a strategy of frequent donation. Furthermore, firms are more likely to be frequent donors when management or local government officers have a long tenure. Our findings provide insight into the giving process and suggest that firms can maximize the benefit of corporate philanthropy if they strategically consider the donation frequency and donation amount simultaneously.     

创新要素投入产出效率随机变动测度与结果分析

创新要素配置在投入产出两个环节中生成大量不完全技术信息，投入产出效率随机变动更加明显。从投入产出数据集合中提炼共同因子，与不可观测变量构成预测器，建立因子增广向量自回归模型(FAVAR)，分析随机变动方差构成，测度投入产出效率随机变动程度。随机变动效应包括水平效应、稳定性效应和规模效应。投入产出效率自回归扰动项表示随机变动程度，将其细分为共同因子，计算预测器方差及其与投入产出效率的协方差。基于669家上市公司月度、季度、半年度和年度技术研发数据，比较分析投入产出效率随机变动程度及形成原因，引入脉冲响应法分析变量方差构成与变动特征，提出相关政策建议。     

Cointegration and control: Assessing the impact of events using time series data

Control groups can provide counterfactual evidence for assessing the impact of an event or policy change on a target variable. We argue that fitting a multivariate time series model offers potential gains over a direct comparison between the target and a weighted average of controls. More importantly, it highlights the assumptions underlying methods such as difference in differences and synthetic control, suggesting ways to test these assumptions. Gains from simple and transparent time series models are analysed using examples from the literature, including the California smoking law of 1989 and German reunification. We argue that selecting controls using a time series strategy is preferable to existing data‐driven regression methods.     

Analysts’ annual earnings forecasts and changes to the I/B/E/S database

Review of Accounting Studies - I/B/E/S is a common source of analyst earnings forecast data, and the reliability of these data is important for practice and academic research. Examining a common...     

区域配网可靠性提升方案研究

北京市城市副中心地区整体规划定级已实现跃升,为满足更高的可靠性级别,需要对现状配电网开展大量新建、改建工程.针对环网柜、中置柜的设备特点,本文列举出了部分接线形式,分析说明其特点运行注意事项,以供地区配网改造参考.     

Innovating for Good in Opportunistic Contexts: The Case for Firms’ Environmental Divergence

Journal of Business Ethics - Opportunistic behaviors are considered ethically and strategically troublesome since they disrupt otherwise mutually beneficial relationships. Previous literature has...     

The Macroeconomic Imbalance Procedure at the Heart of EU Economic Governance Reform

While the euro officially came into being in 1999, it was the introduction of euro notes and coins 20 years ago in January 2002 that made the common currency a tangible reality for European citizens. The circle of member states has since grown from 11 to 19, and a growing section of the population no longer has any personal experience with a “national” currency, yet the debate on the legal and institutional framework underpinning the common currency has never gone away.