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41.
The relationship between stock returns and volatility in international stock markets 总被引:2,自引:0,他引:2
This study examines the relationship between expected stock returns and volatility in the 12 largest international stock markets during January 1980 to December 2001. Consistent with most previous studies, we find a positive but insignificant relationship during the sample period for the majority of the markets based on parametric EGARCH-M models. However, using a flexible semiparametric specification of conditional variance, we find evidence of a significant negative relationship between expected returns and volatility in 6 out of the 12 markets. The results lend some support to the recent claim [Bekaert, G., Wu, G., 2000. Asymmetric volatility and risk in equity markets. Review of Financial Studies 13, 1–42; Whitelaw, R., 2000. Stock market risk and return: an empirical equilibrium approach. Review of Financial Studies 13, 521–547] that stock market returns are negatively correlated with stock market volatility. 相似文献
42.
关于无形资产评估中折现率确定方法的探讨 总被引:3,自引:0,他引:3
折现率的预测和确定是无形资产评估中的难点问题之一。由于折现率是影响评估结果准确度的重要参数,所以在当前对高质量资产评估结果的需求日益迫切的背景下,有必要再度探讨无形资产折现率确定方法的相关问题。本文提出应根据引起无形资产评估的具体情况来选择合理的折现率确定方法;同时也提出了无形资产折现率确定方法运用和发展的几点建议:科学性和合理性相结合、静态分析与动态分析相结合、因素分析与模型分析相结合。 相似文献
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"卡脖子"技术是一种"人有我无""受制于人"的共性技术,政府支持对其协作攻关必须以择优制度为保障.由于"卡脖子"技术是一种可对标的特殊共性技术,因而政府择优支持制度具备择优条件,可以有效防范支持制度的政府失灵.政府择优支持制度包含择优技术标准、信息共享、测试平台共享等制度,有利于形成科学技术路线、释放优秀方案潜力,从而降低协作成本、提升合作收益、激发创新投入、实现高效攻关.对科研机构和生产企业攻关协作的博弈模型论证了上述观点. 相似文献
46.
Due to the impact of knowledge-based economies, all countries strive to foster creative education. Research has demonstrated
that creativity is influenced both by individual characteristics and by the environment. Previous research examining creative
teaching by teachers in Taiwan has typically focused on the relationships between creative teaching and innovative personal
characteristics, school leaders’ behaviors, and internal motivation. The purpose of this study was to move beyond prior research
to investigate the relationship between creative teaching behaviors and innovation-fostering elements of the organizational
climate in schools. In addition, we examined the impact on teacher creativity of urban versus rural school location. 相似文献
47.
Using a panel cointegration method incorporating structural breaks and cross-sectional dependence, this paper explores the long-run equilibrium relationship between innovation and foreign direct investment (FDI) in 30 OECD countries. The results from the panel stationary test show that FDI and innovation variables follow a stationary process with several structural breaks over the period 1999–2018. The results also suggest an equilibrium relationship with structural breaks between FDI and innovation in OECD countries. The panel dynamic OLS model with breaks further reveals that FDI is positively associated with innovation performance and vice versa in OECD countries. Therefore, this paper sheds light on the relationship between FDI and innovation in OECD countries. 相似文献
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This study employs the linear and nonlinear ARDL cointegration methodologies to examine the potential symmetric and asymmetric responses of suicide rates to unemployment rates in the US from 1928 to 2013. Our results suggest that suicide rates are pro-cyclical with respect to the business cycle (measured by changes in the unemployment rate) after extensively controlling for divorce and fertility rates. Unemployment has symmetric long-run effects on the age-adjusted suicide rate and four age-specific (from ages 25–34 to 55–64) suicide rates, while the effect of an economic expansion on suicide rates for those aged over 45 is greater than the effect of an economic recession. These findings imply that the effect of an economic expansion on the decrease of the suicide rate is higher than the effect of an economic recession on the increase of the suicide rate for individuals aged over 45. Therefore, intervention designed to reduce suicidal behaviors should emphasize periods of economic recession more than periods of economic expansion for those of middle age and beyond. 相似文献
50.
经济新常态下,创业是推动中国经济发展、改善民生的重要途径。创业过程的风险性、不确定性及正外部性需要政府给予积极支持。基于2007-2015年中国内地30个省市(除西藏外)数据,运用动态面板模型,考察地区财政支出和创业活动的关系。研究结果表明:财政支出规模对创业活动数量及创业活动质量具有滞后的积极作用;财政支出规模的滞后效应源于财政支出结构的滞后效应,不同财政支出结构对创业活动质量影响的差异较大;同时,创新是提升创业活动质量的重要手段。因此,政府应积极支持“大众创业、万众创新”,各地区财政创业扶持资金应该从规模和结构上进行调整,重点优化有利于创新的支出结构,为创业提供良好的公共环境。 相似文献