Descending price multi-item auctions

We propose a simultaneous descending price auction mechanism to sell multiple heterogeneous items, each owned by a distinct seller, to a number of buyers. Each buyer has known private valuations on items, and wants at most one item. We show that if the sellers follow a descending price offer procedure and the buyers follow a greedy strategy for accepting the offers, the auction results in a nearly efficient allocation, and terminates close to a competitive equilibrium price vector. The descending price offer strategy of the sellers is close to a Nash equilibrium. However, we show that the buyers are better off waiting in our auction. There is a maximum limit (corresponding to the minimum competitive equilibrium price vector) till which they can wait without running into the risk of not winning any item. If the buyers wait within this limit, the prices can be brought arbitrarily close to a uniquely defined competitive equilibrium price vector.     

An investigation of risk and return in forward foreign exchange

This paper examines the determination of risk premiums in foreign exchange markets. The statistical model is based on a theoretical model of asset pricing, which leads to severe cross-equation constraints. Statistical tests lead to a rejection of these constraints. We examine the robustness of these tests to time variation in parameters and to the presence of heteroskedasticity. We find that there is evidence for heteroskedasticity and that the conditional expectation of the risk premium is a nonlinear function of the forward premium. Accounting for this nonlinearity, the specification appears to be time invariant. Out of sample portfolio speculation is profitable but risky.     

Traffic law enforcement in Hyderabad, India

The aim of the study was to understand traffic law enforcement (TLE) carried out by the police to reduce non-compliance with traffic laws on the roads of Hyderabad city in India for 2001-2003. The Traffic Police database of citations issued to drivers who violated traffic laws in Hyderabad was analysed for the years 2001-2003 to describe the TLE activities of the police, to describe and compare the TLE activities for the different types of vehicles and to compare the TLE activities for the 3 years. The violations were classified in five categories - those related to driving, parking, vehicle, document and others; and TLE into safety and other TLE. A total of 646 161 traffic-law violations were registered in 2001, 904 447 in 2002 and 964 275 in 2003 for Hyderabad. Driving and parking violations were the most common violations registered in all 3 years, with parking violations slightly higher in 2001 (43.5%) and driving violations slightly higher in 2002 (35%) and 2003 (36.4%). Auto-rickshaws (three-wheel commercial passenger vehicles) accounted for the highest violations registered in 2001 (41.4%) whereas motorized two-wheelers had the highest registered violations in 2002 (35.5%) and 2003 (33.2%). Safety TLE activity (detecting and registering driving violations) was only one-third of all the TLE activity performed by the police in the 3 years, and disobeying traffic signals was the most common violation registered under safety TLE. Indian rupees 50 (US$1.1) were collected by way of a fine in 87% of the cases registered. Age and gender of the violators were not recorded in the database. These data can be used for planning, monitoring and evaluating TLE in Hyderabad. These can help identify traffic control and human factors that could lead to traffic noncompliance, and help identify priorities for improving road safety. These data indicate a need to enhance the safety TLE activity of the police, to make TLE more visible in Hyderabad, and to assess the effectiveness of the current legal action as deterrence to improve road safety. Recommendations to enhance TLE within the given resources of the police are made. More effort is needed towards systematic collection and analysis of data on TLE in India to facilitate long-term improvements in TLE for safer roads.     

Evaluating inflation targeting as a monetary policy objective for India

This study formulates a small open economy model for India with exchange rate as a prominent channel of monetary policy. The model is estimated using the Instrumental Variable-Generalized Methods of Moments (IV-GMM) estimator and evaluated through simulations. This study compares different cases of domestic and CPI inflation targeting, strict and flexible inflation targeting, and simple Taylor type rules. The analysis highlights the unsuitability of simple Taylor-type monetary rules in stabilizing the Indian economy and suggests that discretionary optimization works better in stabilizing this economy. There seems to be a trade-off between output gap stabilization and exchange rate stabilization in flexible domestic inflation targeting and CPI inflation targeting respectively. However, flexible domestic inflation targeting seems a better alternative from an overall macro stabilization perspective in India where financial markets are still not sufficiently integrated to ensure quick transmission of interest rate impulses and existence of rigidities in the economy.     

The informational relevance of corporate social responsibility: evidence from DS400 index reconstitutions

This study examines the relationship between corporate social responsibility and financial performance by analyzing the intra‐industry wealth impact of additions and deletions to the Domini Social 400 index. Results from the event study analysis indicate that additions to the index generate a positive share price response for the announcement firm and a negative response by rival firms. The opposite reaction is observed for index deletions. Additionally, the share price response is more pronounced for informationally opaque industries. Our study highlights the importance of external monitoring agencies in providing meaningful information that helps resolve investor uncertainty regarding the quality of a firm's relationships with its primary stakeholders. Copyright © 2011 John Wiley & Sons, Ltd.     

Strategies to fight low-cost rivals

Companies find it challenging and yet strangely reassuring to take on opponents whose strategies, strengths, and weaknesses resemble their own. Their obsession with familiar rivals, however, has blinded them to threats from disruptive, low-cost competitors. Successful price warriors, such as the German retailer Aldi, are changing the nature of competition by employing several tactics: focusing on just one or a few consumer segments, delivering the basic product or providing one benefit better than rivals do, and backing low prices with superefficient operations. Ignoring cutprice rivals is a mistake because they eventually force companies to vacate entire market segments. Price wars are not the answer, either: Slashing prices usually lowers profits for incumbents without driving the low-cost entrants out of business. Companies take various approaches to competing against cut-price players. Some differentiate their products--a strategy that works only in certain circumstances. Others launch low-cost businesses of their own, as many airlines did in the 1990s--a so-called dual strategy that succeeds only if companies can generate synergies between the existing businesses and the new ventures, as the financial service providers HSBC and ING did. Without synergies, corporations are better off trying to transform themselves into low-cost players, a difficult feat that Ryanair accomplished in the 1990s, or into solution providers. There will always be room for both low-cost and value-added players. How much room each will have depends not only on the industry and customers' preferences, but also on the strategies traditional businesses deploy.     

Do Short Sellers Target Firms with Poor Earnings Quality? Evidence from Earnings Restatements

We study the behavior of short sellers around earnings restatements. We find that short sellers accumulate positions in restating firms several months in advance of the restatement and subsequently unwind these positions after the drop in share price induced by the restatement. The increase in short interest is larger for firms with high levels of accruals prior to restatement. We document that heavily shorted firms experience poor subsequent performance and a higher rate of delisting. Overall, these results suggest that the motive for short selling is, at least in part, related to suspect financial reporting and that short sellers pay attention to information being conveyed by accruals.

The impact of social cues on passengers’ travel experience

Despite the importance of social cues in service experience environments, little is known about the role of other customer perceptions (OCP) in the formation of passengers’ travel experience (PTE) and loyalty in public transportation. This study examines the impact of OCP on PTE and loyalty in public transportation and also investigates the moderating role of face-consciousness between OCP and PTE. Results revealed that all three dimensions of OCP have a positive effect on PTE, which consequently influences loyalty. More importantly, face-consciousness moderated the relationship between suitable behavior and PTE. Transport managers can benefit from these findings by considering the social environment as they design their services.