异质性研发、知识溢出与企业创新产出——基于创新链视角的实证分析

畅通创新链的首要前提,是科学认识嵌入创新链的不同类型企业所承载的创新功能差异及企业间技术经济联系。利用2012—2018年我国上市公司授权专利的前向索引数据进行统计分析发现,不同所有制企业存在异质性研发行为,国有企业研发活动更多承担了基础研究创新功能,而民营企业研发活动更多承担了应用研究创新功能。运用面板Tobit模型实证分析异质性研发知识溢出对企业创新产出的影响,结果表明,国有企业知识溢出对企业发明专利与非发明专利申请均表现为促进作用,民营企业知识溢出对企业发明专利申请表现为促进作用,而对非发明专利申请表现为抑制作用,且作用大小在不同所有制以及不同生命周期的企业间存在差异。由此,基于创新链构建新型国家创新体系过程中,应引导国有企业优先布局高度依赖基础研究的科学领域,解决市场失灵问题并充分发挥其创新促进效应;鼓励民营企业在共性技术研究领域展开协作,规避同业竞争所形成的创新抑制效应;因企制宜、分类施策,实现创新资源高效配置和综合集成。     

Forecasting value at risk and expected shortfall with mixed data sampling

I propose applying the Mixed Data Sampling (MIDAS) framework to forecast Value at Risk (VaR) and Expected shortfall (ES). The new methods exploit the serial dependence on short-horizon returns to directly forecast the tail dynamics of the desired horizon. I perform a comprehensive comparison of out-of-sample VaR and ES forecasts with established models for a wide range of financial assets and backtests. The MIDAS-based models significantly outperform traditional GARCH-based forecasts and alternative conditional quantile specifications, especially in terms of multi-day forecast horizons. My analysis advocates models that feature asymmetric conditional quantiles and the use of the Asymmetric Laplace density to jointly estimate VaR and ES.     

Customer acceptance of four types of hospitality value propositions

Although how successful hospitality companies create value propositions has received some interest, how and why customers accept value propositions remains largely unknown. Grounded in theory of acceptance and service-dominant logic, this study examined consumers’ psychological mechanism of acceptance of value propositions at different points of exchange, and investigated the impact of value propositions acceptance on customers’ well-being and perceptions of service advantage. Online respondents (N = 180) assessed four hospitality value propositions: innovation, marketing, production, and recovery. Repeated-measures ANOVA and PROCESS Model analyses revealed that customers accepted value propositions cognitively, emotionally, normatively, and behaviorally, positively influencing subjective well-being and perceptions of firm’s service advantage. Service production and recovery value propositions had higher acceptance compared to innovation and marketing. This study is the first to empirically illustrate the complex process of customer value proposition acceptance and the effects on personal and organizational outcomes. Theoretical and practical implications are provided.     

基于自由现金流量的企业价值评估:以索芙特公司为例

本文在介绍自由现金流量折现法相关原理的基础上,选取一家名为索芙特的化妆品上市公司,通过分析该上市公司过去五年的相关财务数据,并结合整个化妆品的行业环境以及该企业的发展现状,分析影响企业价值评估的宏观环境和微观环境,进而探究该公司未来五年的自由现金流量。依据两阶段自由现金流量模型估算出索芙特公司的价值。基于此,本文从调整资本结构,提高公司自由现金流量的增长率两方面对索芙特公司的价值管理提出建议。     

基于金融衍生工具组合的财务风险管理

本文将金融衍生工具套期保值这一行为作为一种投资行为。在分析各种金融衍生工具单独使用进行套期保值时带来的操作性非系统风险的基础上,借鉴投资组合的基本理论,使用组合的金融衍生工具套期保值,从而既可以达到单独使用金融衍生工具控制财务风险的目的,又可以在一定程度上降低由于金融市场自身极强的波动性带来的风险,具有一定的现实意义。     

基于时间竞争的供应链再造模式与策略研究

通过对供应链进行时间价值分析,指出了面向时间竞争的供应链再造的目标和意义;定义了面向时间竞争的供应链再造的两种基本模式,即外延型再造和内涵型再造,分析了两者的特点和差异;给出了面向时间竞争的供应链再造的策略框架,包括结构再造和运行策略再造,最后对物流和信息流两个维度的时间压缩进行了具体分析.     

Creating a model of customer equity for chain restaurant brand formation

The purpose of this research was to create and test a model of customer equity for chain restaurant brand formation. It has long been acknowledged that managing and enhancing customer equity influences a company's shareholder value, which is a reflection of long-term financial performance. A review of the current literature revealed three key determinants of customer equity: (1) value equity, (2) brand equity, and (3) relationship equity. Six hypotheses were derived and, based on data analysis, all six were supported. Value, brand, and relationship management were all confirmed to be important factors in enhancing customer equity in the chain restaurant industry. Further, brand equity has the strongest impact on the development of customer equity in this particular industry. Relationships among value equity, brand equity, and relationship equity were also identified. Managerial implications are discussed.     

创新生态系统视角下价值共创如何影响企业创新绩效——一个有调节的中介模型

以创新生态系统为视角,引入创新资源互动与生态系统规范机制为中介变量和调节变量,探究价值共创如何影响企业创新绩效。基于307家企业样本数据,运用结构方程模型、Bootstrap和层级回归方法对数据进行分析。研究发现：创新生态系统中,价值共创不完全直接影响企业创新绩效;创新资源互动部分中介价值共创对企业创新绩效的影响;生态系统规范机制部分正向调节价值共创对创新资源互动的影响。最后提出,创新生态系统调控方与企业要差异化地制定提升创新绩效的实施方案,营造活跃的创新资源互动氛围,形成并完善系统内生态规范机制。     

基于偏度的多期证券投资组合模型研究

在考虑资产收益率分布中正的偏度水平前提下,以风险价值VaR为约束条件,并引入非线性交易费用、税收等市场摩擦因素,建立以累积偏度最大为目标函数的多期投资组合优化模型,用罚函数法和PSO算法结合求解此模型,并给出实证分析。考虑到在买卖资产风险时交易费用等对投资收益的影响,投资者应该在每一期都对其资产组合进行调整分析,确保在每一期的开始都建立起符合需要的最优资产组合,这对投资者的连续投资行为具有一定的指导意义。     

物流业营业税制改革设想

现代物流业作为新兴的第三产业,在我国当前社会经济发展中发挥着越来越重要的支撑和引领作用。然而由于现行税制的不完善,在一定程度上阻碍了我国物流业的进一步发展。本文结合物流企业现行营业税制的相关规定,分析其存在的重复课征、税率不一等阻碍物流业发展的诸多问题,提出为物流业减负的营业税制调整和改革的基本设想。