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An extension of the validity of »Student»-Fisher's law of distribution

Abstract

One of the fundamental laws of the distribution of errors within modern theoretical statistics is the »Student»-Fisher law of distribution, which answers the question:     

Perceptions of climate change among members of the House of Peoples’ Representatives,Ethiopia

Climate change has become an issue which touches upon all spheres of life. To combat the problem, understanding the perceptions of all that have stake in it provides with stronger ground for decision-making. Ethiopia is one those countries that are or going to be severely affected by climate change, the solution of which partly depends on how its key decision-makers perceive the problem. In light of this a questionnaire survey was conducted on 195 volunteering members of the House of People’s Representatives in Ethiopia. The results of data analysis reveal that most identified rainfall variability, declining hydrology and increasing temperature as manifestations of climate change, and emission reduction and forest protection as its key solutions.     

Analysts’ estimates of the cost of equity capital

We explore a large sample of analysts' estimates of the cost of equity capital (CoE) to evaluate their usefulness as expected return proxies (ERP). We find that the CoE estimates are significantly related to a firm's beta, size, book-to-market ratio, leverage, and idiosyncratic volatility but not other risk proxies. Even after controlling for the popular return predictors, the CoE estimates incrementally predict future stock returns. This predictive ability is better explained as the CoE estimates containing ERP information rather than reflecting stock mispricing. When evaluated against traditional ERPs, including the implied costs of capital, the CoE estimates are found to be the least noisy. Finally, we document CoE responses around earnings announcements, demonstrating their usefulness to study discount-rate reactions of market participants. We conclude that analysts' CoE estimates are meaningful ERPs that can be fruitfully employed in a variety of asset pricing contexts.     

Approximating functionals of local martingales under lack of uniqueness of the Black–Scholes PDE solution

When the underlying stock price is a strict local martingale process under an equivalent local martingale measure, the Black–Scholes PDE associated with a European option may have multiple solutions. In this paper, we study an approximation for the smallest hedging price of such an European option. Our results show that a class of rebate barrier options can be used for this approximation. Among them, a specific rebate option is also provided with a continuous rebate function, which corresponds to the unique classical solution of the associated parabolic PDE. Such a construction makes existing numerical PDE techniques applicable for its computation. An asymptotic convergence rate is also studied when the knock-out barrier moves to infinity under suitable conditions.     

Heart of Darkness： A ＂Parody＂ of Metafiction

约瑟夫·康拉德的小说《黑暗之心》除了具有反殖民主义的高度和探索人性的深度,其叙事手法与后来出现的元小说十分相似,因此极为引人入胜。本文以元小说的叙事手法为背景,通过对比和比较,发现康拉德在《黑暗之心》中采用的其中一种叙事手法与"叙述的叙述"这一典型的元小说叙事手法实则貌合神离,或者说前者是对后者的戏拟,二者的异同也折射出了现代文学与后现代文学之间存在的本质差异与相似之处。     

Analysis of Consumers’ Perceptions of Buying Conditions for Houses

This paper examines the determinants of consumers’ buying attitudes for houses from January 1984 through June 2005. Data on buying attitudes are from responses to the Surveys of Consumer Attitudes conducted by the Survey Research Center, University of Michigan. The determinants considered include current and expected interest rates, wealth, expected real disposable income, expected change in financial status and house prices. The empirical estimates show that a long-run relationship exists between buying attitudes for houses and each of the above variables. Each of these determinants also Granger cause buying perceptions. Generalized impulse responses show that shocks to each of the above variables have a predictable and permanent impact on buying attitudes. Furthermore, generalized variance decompositions suggest that both current and expected interest rates explain a large proportion of the variation in consumers’ perceptions towards buying houses. Since consumers’ attitudes towards buying houses are likely to be translated into actual purchases, this study shows that in order of importance, interest rates—both current and future—have the maximum impact on decisions to purchase houses followed by expectations of real disposable income.

Discussion of ‘The antecedents of the use of continuous auditing in the internal auditing context’

Gonzalez et al. (2012) apply the Unified Theory of Acceptance and Use of Technology (UTAUT, Venkatesh et al., 2003) to the issue of adoption of continuous auditing (CA) by internal auditors. The authors make a very convincing case for the slow evolution of CA and propose that this can be explained by the four factors contained in the UTAUT as well as annual sales and voluntariness of use. They find, in their revised model, that effort expectancy and social influence directly impact intentions to use the technology, while performance expectancy is moderated by annual sales and social influence is moderated by voluntariness of use. Interestingly, the authors also identify geographical differences in these influences. I offer commentary on these findings and suggest avenues for future research in the domain of technology adoption and use in accounting.     

The use of multi‐level modelling in risk research. A secondary analysis of a study of public perceptions of genetically modified food

Many studies have examined the relationship between various individual variables and people's perceptions of genetically modified (GM) food. A problem with this type of research is that contextual factors are completely ignored. This article explores the use of multi‐level modelling in the field of risk research, by re‐analysing a recent British study of public perceptions of GM food. As the study employed a multi‐stage sampling strategy, it could be used to examine simultaneously the individual and spatial variation in trust and the acceptability of GM food. While the geographical variation in acceptability was largely due to compositional differences between the sampling points, a geographical variation in trust remained after controlling for individual differences. The analysis demonstrated that city‐dwellers commonly have more trust in the regulation of GM food than other respondents. Next to being associated with a number of socio‐demographic variables, both acceptability and trust were related strongly to voting intention. Moreover, the results suggest that there is a link between vulnerable groups, feelings of exclusion, and (dis)trust. The article is concluded by arguing that multi‐level modelling provides new opportunities for simultaneously examining the individual and contextual basis of public perceptions of controversial risk issues.     

Rethinking “Strength of Incentives” for Executives of Financial Institutions

The recent crisis has caused some finance theorists and practitioners to rethink the effects of managerial incentives on the total enterprise value of large financial institutions. This re-examination has identified and analyzed a number of potential problems with the use of equity-based compensation, including insufficiently long managerial time horizons as well as the temptation for excessive risk-taking provided by “asymmetric” payoff structures in which shareholders have virtually all the upside while debtholders bear most of the downside risk. In an attempt to address such problems, finance and governance scholars have increasingly explored the possible value of aligning managerial interests with those of not only shareholders, but other important corporate claimants such as debtholders and taxpayers. After reviewing the latest thinking about risk and managerial incentives at financial institutions, the authors come to the following conclusions:

• • The design of incentives for value maximization needs to reflect a healthy appreciation of downside risk as well as upside reward, and both senior and subordinated debt may be ideal instruments for establishing that balance. At the same time, most senior executives should continue to receive equity-linked compensation in addition to significant proportions of “inside debt.”
• • Since decision-makers below the highest level executives of large financial institutions collectively wield enormous power to assume and manage risks, this “upper-middle” tier of managers deserves special attention. Rather than rewarding these managers with stock or options, the authors suggest use of a combination of uncapped but “held-at-risk” bonuses denominated in subordinated inside debt as the best way of rewarding effort and competence while controlling opportunities for risk-shifting.

     

A practitioner’s view of the future of futures studies

This article looks at the future of futures studies (FS) over the next 20 years from a practitioner’s viewpoint. It begins with favorable developments for FS in the organizational context. The main body covers how FS can take advantage of these more favorable developments. It then anticipates some key methodological and professional challenges and how FS might meet them. It concludes with a few comments about the prospects for a self-actualized FS.The single biggest challenge for FS over the next generation from my practitioner’s point-of-view is to get beyond the cyclicality of interest in the future and get FS firmly integrated into the organizational context. Our experience to date convinces me that we have earned “the right to practice,” and we must now focus the next few decades on sinking roots “inside”. The good news is that there are several developments suggesting that this is not just a preferable but also a probable future.     

The Propellent of ReneSola

In the beginning of 2007, ReneSola was named ＂IPO of the Year＂ at Growth Company Investor＇s Quoted Company Awards 2007. The shortlisted for the IPO of The Year Company were Carluccio＇s, May Gurney Integrated Services, Worthington Nicholls, Morson, and Scott Wilson, ReneSola was the winner.     

Completeness,interconnectedness and distribution of interbank exposures—a parameterized analysis of the stability of financial networks

This paper assesses the impact of a certain structure of interbank exposures on the stability of a stylized financial system. Given a certain balance sheet structure of financial institutions, a large number of valid matrices of interbank exposures is created by a random generator. Assuming a certain loss given default, domino effects are simulated. The main results are, first, that financial stability depends not only on the completeness and interconnectedness of the network, but also on the distribution of interbank exposures within the system (measured by entropy). Second, looking at random graphs, the sign of the correlation between the degree of equality of the distribution of claims and financial stability depends on the connectivity of the financial system as well as on additional parameters that affect the vulnerability of the system to interbank contagion. Third, the more concentrated the assets are within a money center model, the less stable it is. Fourth, a money center model with asset concentration among core banks is less stable than a random graph with banks of homogeneous size.     

The Proverb of Friendship

U.S.Treasury Secretary Herry M.Pauison said on Decerrber 11,2006 that U.S.-China economic relationship is vital to U.S.future prosperity.     

A re-examination of analysts’ superiority over time-series forecasts of annual earnings

We re-examine the widely held belief that analysts?? earnings per share (EPS) forecasts are superior to random walk (RW) time-series forecasts. We investigate whether analysts?? annual EPS forecasts are superior, and if so, under what conditions. Simple RW EPS forecasts are more accurate than analysts?? forecasts over longer horizons, for smaller or younger firms, and when analysts forecast negative or large changes in EPS. We also compare the accuracy of a third forecast of longer-term earnings based on a na?ve extrapolation of analysts?? 1-year-ahead forecasts. Surprisingly, this na?ve extrapolation provides the most accurate estimate of long-term (2- and 3-year-ahead) earnings. These findings recharacterize prior generalizations about the superiority of analysts?? forecasts and suggest that they are incomplete, misleading, or both. Moreover, in certain settings, researchers can rely on forecasts other than these explicit forecasts.     

Eclipse of the Public Corporation or Eclipse of the Public Markets?

The authors look back at Michael Jensen's 1989 article “The Eclipse of the Public Corporation.” They find some of his predictions have been borne out but other important ones, not. Jensen concluded that the publicly held corporation was in decline and had outlived its usefulness in many sectors. He argued that agency costs made public corporations an inefficient form of organization and that new private organizational forms promoted by private equity firms would likely replace the public firm. The number of public firms in the U.S. has declined significantly but there are still many hugely profitable and successful public companies. U.S. public markets are still well‐suited for firms with mostly tangible assets. So, what we are really witnessing is an eclipse not of public corporations, but of the public markets as the place where young firms with mostly intangible capital seek their funding. This is especially true when the usefulness of the intangible assets has yet to be proven. Sometimes the market is extremely optimistic about some intangible assets, but otherwise firms with unproven intangible assets may be better off funding themselves privately. This evolution has a downside: investors limited to public markets are cut off from investing in high intangible‐asset firms. Additionally, as fewer firms remain publicly listed, fewer firms will be transparent to society.     

Is the social representation of nanotechnology anchored in that of GMOs?

The use of nanotechnology (devices/materials composed of parts less than 10 nanometres) in the development of new products is rapidly expanding. Industrialists and decision-makers consider nanotechnology to be the next industrial revolution, but fear they risk the same resistance to nanotechnology that their counterparts experienced with genetically modified organisms (GMOs). Although risk perception studies have shown that perceived risk of GMOs is quite high compared to that related to nanotechnology, no study to date has explored a potential direct social representation link between the two. The present study aims to fill that gap by comparing the social representations of nanotechnology and GMOs among a population of non-experts. This study was conducted with 282 students in human and social sciences and natural sciences. Using a free association task with the inductive words ‘nanotechnology’ and ‘GMO (genetically modified organism)’, we identified the existing social representations of the two based on a structural approach. While the representation of GMOs is objectified in the field of agriculture, objectification for nanotechnology seems to still be lacking, although its possible objectification likely lies in computing and robotics. Our calculation of the rate of similarity of associative words with nanotechnology and GMOs indicated no present, direct link between their social representations. We discuss the possible evolution of the social representation of nanotechnology over time.