风险投资下创新投入对高新技术企业财务绩效影响研究

随着融资方式的发展,风险资本是否可以作为调节因素的争论仍在继续.企业技术创新具有成本高、风险大,投资回报收益慢的特点,而风险投资的增值服务恰恰能够为企业提供技术创新方面的支持,因此,在创新投入能否直接提升企业绩效的基础上研究风险投资的调节作用,具有重要的理论与实践意义.本研究以2014～2019年创业板高新技术企业为样本,运用多元回归模型,研究了风险投资视角下创新投入对财务绩效的影响.研究结果表明:创新投入对当期企业财务绩效有显著负向影响,创新投入显著正向影响存在滞后性;风险投资的参与促进了财务绩效提升;风险投资的介入对创新投入与财务绩效的正相关关系有正向调节作用,风险投资持股比例对两者关系的调节效应不显著.     

资金利率和通货膨胀率下双复合POISSON风险模型

本文将双复合POISSON风险模型推广到保费随机收取的新模型并考虑了资金利率和通货膨胀率,运用鞅分析方法获得了其破产概率所满足的Lundberg不等式及其一般表达式。     

TVaR-based capital allocation with copulas

Because of regulation projects from control organisations such as the European solvency II reform and recent economic events, insurance companies need to consolidate their capital reserve with coherent amounts allocated to the whole company and to each line of business. The present study considers an insurance portfolio consisting of several lines of risk which are linked by a copula and aims to evaluate not only the capital allocation for the overall portfolio but also the contribution of each risk over their aggregation. We use the tail value at risk (TVaR) as risk measure. The handy form of the FGM copula permits an exact expression for the TVaR of the sum of the risks and for the TVaR-based allocations when claim amounts are exponentially distributed and distributed as a mixture of exponentials. We first examine the bivariate model and then the multivariate case. We also show how to approximate the TVaR of the aggregate risk and the contribution of each risk when using any copula.     

On a robust risk measurement approach for capital determination errors minimization

We propose a robust risk measurement approach that minimizes the expectation of overestimation plus underestimation costs. We consider uncertainty by taking the supremum over a collection of probability measures, relating our approach to dual sets in the representation of coherent risk measures. We provide results that guarantee the existence of a solution and explore the properties of minimizer and minimum as risk and deviation measures, respectively. An empirical illustration is carried out to demonstrate the use of our approach in capital determination.     

《资本论》第四卷的两条线索

采用历史分析和比较分析方法,对马克思的《资本论》第四卷,即剩余价值理论进行研究,可以发现两条基本的重要的线索：一条是五种关于利润的观点是怎样发展起来的;另一条是为什么旧经济学家会混淆利润和剩余价值,看不到利润与剩余价值的区别。     

Valuing interdependent multi-stage IT investments: A real options approach

In this paper, we use the market asset disclaimer assumption and develop a binomial lattice based real options model to include cash flow interdependencies between multi-stage information technology (IT) investments. Using a simple two-stage IT investment problem with interdependent cash flows, we apply the binomial lattice based real options model to obtain combined valuation of the two-stage IT investment. In addition to investment valuation, our experience with the two-stage IT investment valuation suggests that the binomial lattice based real options model provides a powerful decision aid tool for appropriate timing, delaying and abandoning of the second-stage IT investment.     

风险投资特征对企业创新绩效影响的再审视——一项meta分析

学术界对风险投资与企业创新绩效的关系一直存在诸多争议。本文运用Meta方法纳入51篇文献共133个效应值分析了风险投资对企业创新绩效的影响,结果发现：风险投资对企业创新绩效仅具有微弱的促进作用。各主要风险投资特征均在不同程度上促进企业的创新绩效,按作用效果由大到小依次为联合风险投资、风险投资期限、风险投资背景、风险投资声誉、风投持股比例。风险投资对企业创新绩效的影响呈现出情境差异,产业类型、产权属性、宏观环境以及创新绩效测量方式均对二者关系起到调节作用,但效果不尽相同。     

固定资产投资的最小方差控制

建立一类固定资产投资的随机动态模型，在此模型的基础上，讨论投资的控制问题．给出最小方差控制策略．     

中国资本市场发展的现状及思路

我国资本市场在发展中存在着资本市场总量规模小，发育程度低，资本的可交易性和流动性低，资本市场效率较低，资本市场主体缺位四个方面问题。目前应从公有制实现形式的创新，完善资本市场制度，结合国企战略性改组，推动存量结构优化，完善资本市场监管制度四个方面予以规范。我国资本市场未来应沿着两方面发展，即资本市场的多层次发展和资本市场渐进式的国际化发展。     

智力资本度量方法的比较与评价

本文论述了智力资本的定义及构成 ,分析了度量智力资本的基本方法及其他方法 ,并对各种度量方法的特点、适用范围进行了比较与评价