Convertible bonds issued in the bear market period: evidence from Taiwan

We argue that the behaviour of enterprises might be modified or even changed completely after black swan events occur. We explore why high-tech firms preferred to issue convertible bonds in 2001–2003, the bear market period after the tech bubble in Taiwan. We show that firms issuing convertible bonds are those with low directors’ holding ratio and high debt ratio. Results also reveal that corporate governance was worse in the firms that issued convertible bonds, as revealed by the finding that the directors’ holding ratio of these issuing firms declined considerably. This finding also implies that corporate governance issues become more serious after black swan events.     

当前我国房地产市场泡沫的成因、对策

历史经验告诉我们,房地产泡沫的产生、破灭对实体经济会产生巨大的损害。近年来,房地产市场在中国经济中的支柱地位得到进一步强化,且从已有的各项指标、数据来看,当前中国房地产市场泡沫现象已非常严重,房地产价格的非理性上涨必将成为实体经济的潜在风险,文章通过对我国房地产市场的泡沫现状与原因分析,提出了解决我国房地产泡沫的政策建议。     

泡沫经济的成因及治理对策研究

文章通过对虚拟经济、羊群效应和资金流动性过剩这三种经济现象的分析，揭示了泡沫经济的生成机理及危害，并提出对泡沫经济的防范、治理要采取宏观政策调控和微观心理引导双管齐下的策略，防范金融风险，保持宏观经济的健康、稳定发展。     

浅析房地产泡沫的成因与危害

近年来,房地产市场持续火热,商品房全面热销,销售价格呈现较大幅度增长。而火爆的房地产市场也引发了有关房地产泡沫的争论。房地产泡沫的存在有利有弊,关键在于将其控制在适度的范围内,避免出现泡沫经济。因此,分析房地产泡沫的形成与危害,针对性提出了防止房地产泡沫的措施。     

Housing booms and media coverage

This article analyses news media coverage of the housing market. Building on theories of media influence where word of mouth is the final mechanism of opinion change but media initiate discourse, I examine the relationship between news media and the recent UK house price boom. Over 30 000 articles on the UK housing market from the period 1993 to 2008 are analysed, and it is found that media Granger-caused real house price changes, suggesting the media may have influenced opinions on the housing market. However, media sentiment on the housing market did not change with the secular increase in house prices in the 2000s, suggesting that the media did not contribute to the UK’s housing boom and may have helped constrain it.     

Venture Capital Backing and Overvaluation: Evidence from the High‐Tech Bubble

We investigate the association between venture capital (VC) backing and the likelihood of firm overvaluation in the high‐tech bubble period. We find strong evidence that a VC‐backed firm is more likely than a non‐VC‐backed firm to be overvalued during the bubble period. A further investigation suggests that such an association exists only for VC‐backed firms that have gone public recently and VC‐backed firms over which venture capitalists (VCs) have high ownership or control. But outside the bubble period, all the differences in overvaluation between VC‐backed and non‐VC‐backed firms disappear. Our findings provide additional evidence supporting VC opportunism in boom periods.     

The Fisher hypothesis: a multi-country analysis

This paper tests whether the Fisher hypothesis holds for a sample of 26 countries by assessing the long run relationship between nominal interest rates and inflation rates taking into consideration the short run dynamics of interest rates. The empirical evidence supports the hypothesis that there is a one-to-one relationship between the interest rate and inflation for more than half of the countries under study.     

Decision trees unearth return sign predictability in the S&P 500

Technical trading rules and linear regression models are often used by practitioners to find trends in asset returns. However, these models typically neglect interaction terms between the lagged daily directional movements. We propose a decision tree forecasting model that has the flexibility to capture arbitrary interaction patterns. To study the importance of interaction terms, we construct a binary Markov process with a deterministic component that cannot be predicted without interaction terms between the lagged directional movements. We show that some tree based strategies achieve trading performance significant at the 99% confidence level on the S&P 500 over the past 20 years, after adjusting for multiple testing. The best strategy breaks even with the buy-and-hold strategy at 21 bps in transaction costs per round trip. A four-factor regression analysis shows significant intercept, and correlation with the market. The directional predictability is strongest during the bursts of the dotcom bubble, financial crisis, and European debt crisis. The return sign predictability during these periods confirms the necessity of interaction terms to model daily returns.     

磁场对氨水鼓泡吸收的强化作用

设计了磁场强化氨水鼓泡吸收试验台并在此基础上研究了静止和旋转磁场及纳米磁流体对氨水鼓泡吸收的影响。通过对氨水鼓泡吸收的吸收率和有效吸收比分析发现磁场和纳米磁流体对氨水鼓泡吸收均有强化作用,而旋转磁场的强化效果比静止磁场更为明显。定义了旋转强化吸收量(ARMF)的概念以表征在其他条件相同时磁场的旋转对氨水鼓泡吸收的强化影响。在不同磁感应强度下ARMF的值均大于0,说明磁场的旋转对氨水鼓泡吸收均有强化作用。最后探讨了实验中出现结果的可能机理。     

北京市住房市场泡沫实证研究 ----基于投资视角

将住房购买视作旨在解决自住问题的一项长期投资,通过现金流净现值、溢价率、内部收益率等指标的计算来考察一个地区住房市场是否存在泡沫及其程度。以2009年3-5月易居网上发布的二手住房出售、出租数据为基础,应用上述方法对北京市朝阳、崇文、东城、丰台、海淀、石景山、西城、宣武等8个城区住房市场研究表明,这8个城区住房市场均不同程度地存在泡沫。