The Notching Rule for Subordinated Debt and the Information Content of Debt Rating

This paper provides new evidence regarding the information content of debt ratings. We show that noninvestment grade subordinated issues are consistently priced too high (the yield is too low), and the reverse is true for some investment grade bonds. We relate this empirical bias to a notching rule of thumb that is used in order to rate subordinated debt without expending additional resources for information production. We propose an explanation for these findings based upon a balance between an attempt to please the companies that pay the raters versus a concern for lawsuits and regulatory investigations should ratings be too optimistic.     

Evaluating the Effect of Affinity Card Programs on Customer Profitability Using Propensity Score Matching

Affinity card programs have become popular in recent times and account for one fifth of all credit card accounts. There is no research that links affinity card programs to customer profitability. Moreover, little is known about what type of affinity card programs would lead to higher profit. Using a large proprietary dataset we answer the above questions. We also apply propensity score matching, a relatively new technique, to control for selection bias in addressing the above issues. Contrary to previous research and common belief, we show that affinity card customers are no more profitable than non-affinity card holders. We also show that sports-based affinity programs are the least profitable and surprisingly, alumni-based affinity programs also do poorly relative to other types of affinity. On the positive side, affinity card customers are lower risk and help to lower the average risk of the portfolio of customers.     

Trading for the future: Signaling in permit markets

Permit markets are celebrated as a policy instrument since they allow (i) firms to equalize marginal costs through trade and (ii) the regulator to distribute the burden in a politically desirable way. These two concerns, however, may conflict in a dynamic setting. Anticipating the regulator's future desire to give more permits to firms that appear to need them, firms purchase permits to signal their need. This raises the price above marginal costs and the market becomes inefficient. If the social cost of pollution is high and the government intervenes frequently in the market, the distortions are greater than the gains from trade and non-tradable permits are better. The analysis helps to understand permit markets and how they should be designed.     

Managing Perplexity: Lessons from Inside the Romanian Business Culture

Despite the passage of several decades since the revolution of 1989, there is little professional literature designed to prepare foreign investors for the Romanian business culture. Visitors to this nation discover a friendly people who engage in business practices often characterized as perplexing, frustrating, and imbued with self-defeating actions. The communist period in Romania's history imbedded unethical behavior into the nation's culture, including the morally ambiguous practice of favor trading. This paper describes this central business activity and how it shapes business dealings and often undermines opportunities. The cultural context that created the favor trading environment is discussed, and methods for managing this perplexing practice are explained.     

A quasi-maximum likelihood method for estimating the parameters of multivariate diffusions

A quasi-maximum likelihood procedure for estimating the parameters of multi-dimensional diffusions is developed in which the transitional density is a multivariate Gaussian density with first and second moments approximating the true moments of the unknown density. For affine drift and diffusion functions, the moments are exactly those of the true transitional density and for nonlinear drift and diffusion functions the approximation is extremely good and is as effective as alternative methods based on likelihood approximations. The estimation procedure generalises to models with latent factors. A conditioning procedure is developed that allows parameter estimation in the absence of proxies.     

Solving optimal timing problems in environmental economics

Two papers of Pindyck, 2000, Pindyck, 2002 that modeled the control of stock pollutants as optimal stopping problems contained closed form solutions that are incorrect. This paper discusses a subtle error in the derivation and demonstrates how solutions to these and related problems can be obtained numerically. The numerical solutions are contrasted with the ones contained in Pindyck's original papers.     

Scientific and technological interactions between Russia and Ukraine: Forecasting opportunities and mechanisms for their implementation

The paper presents the research results of an investigation into the state of scientific, technological, trade and economic interactions between Russia and Ukraine in terms of their potential, prospects, and problems impeding their cooperation. It is shown that there is a considerable scientific and technological potential both in Russia and Ukraine. Opportunities and conditions for the modernization of both countries’ economies are shown to depend on the coordinated use of their potentials.     

那捉摸不定的感觉

当你将手机调成振动状态或者用一个振动手柄玩赛车视频游戏，你正在享用触觉科技。人的身体可以感知多种不同的感觉并发生错觉，如果把感觉集于一隅，它会变得很有趣。     

Increasing the Informational Content of Reach and Frequency Estimates

This article discusses the limitations of present methods of analyzing the coverage of advertising schedules and presents a technique for obtaining additional information from traditional measures of schedule coverage. This technique models entire patters of audience exposure to commercials by means of a compound Bernoulli distribution that can be estimated from reach and frequency data. Knowledge of the complete pattern of audience exposure to advertising schedules assists the media analyst in selecting optimally effective advertising schedules and consequently enhances the probability of conducting a successful advertising campaign.     

Oil-Price Shocks: Beyond Standard Aggregate Demand/Aggregate Supply Analysis

The author explores the problems of portraying oil-price shocks using the aggregate demand/aggregate supply model. Although oil-price shocks are the most commonly cited examples of aggregate supply shocks, they violate the model's assumption of constant relative prices (as acknowledged by the label, “oil-price shocks”). The resulting problems are effectively masked in textbook presentations by implicitly assuming that the supply shocks occur in a closed economy. However, the typical discussion is glaringly inaccurate when discussing the effects of oil-price shocks on oil-rich countries. Thus, the cogency of the standard model's representation of oil-price shocks on open economies is compromised. A simple modification of the model that differentiates between production and absorption goods enables it to better reflect the effects of oil-price shocks on open economies.