Passenger waiting time in an airport and expenditure carried out in the commercial area

A methodology to estimate the relationship between the expenditure in the commercial area of an airport and the passenger waiting time to board is developed. It shows that the more time spent in the airport, the greater consumption by passengers. This functional dependence is analysed for the travellers who travel for holiday purposes and of those who do so for business. As an example of application of this methodology the results shown are obtained from Asturias Airport (Spain).     

The unemployment structure of the US states

This paper analyses the time series properties of the unemployment rates of the US economy using a regional disaggregated level. Our results are, in general, favorable to the rejection of the presence of a unit root in these variables. However, we can also observe that this conclusion is clearly qualified by the level of disaggregation employed. We also find robust evidence in favor of the presence of some breaks in the evolution of these unemployment rates. We subsequently offer an estimation of the NAIRU, which is based on the use of the Bai–Perron procedure.     

Projective system approach to the martingale characterization of the absence of arbitrage

The equivalence between the absence of arbitrage and the existence of an equivalent martingale measure fails when an infinite number of trading dates is considered. By enlarging the set of states of nature and the probability measure through a projective system of perfect measure spaces, we characterize the absence of arbitrage when the time set is countable.     

Auditing Stories about Discomfort: Becoming Comfortable with Comfort Theory

We investigate whether the choice of valuation model affects the forecast accuracy of the target prices that investment analysts issue in their equity research reports, controlling for factors that influence this choice. We examine 490 equity research reports from international investment houses for 94 UK-listed firms published over the period July 2002–June 2004. We use four measures of accuracy: (i) whether the target price is met during the 12-month forecast horizon (met_in); (ii) whether the target price is met on the last day of the 12-month forecast horizon (met_end); (iii) the absolute forecast error (abs_err); and (iv) the forecast error of target prices that are not met at the end of the 12-month forecast horizon (miss_err). Based on met_in and abs_err, price-to-earnings (PE) outperform discounted cash flow (DCF) models, while based on met_end and miss_err the difference in valuation model performance is insignificant. However, after controlling for variables that capture the difficulty of the valuation task, the performance of DCF models improves in all specifications and, based on miss_err, they outperform PE models. These findings are robust to standard controls for selection bias.     

On the joint production of research and training

Universities and research institutions have the responsibility to produce science and to provide training to new generations of researchers. In this paper, we propose a model to analyze the determinants of a senior scientist’s decisions about allocating time between these tasks. The results of this decision depend upon the characteristics of the research project, the senior scientist’s concern for training and the expected innate ability of the junior scientist involved. We analyze the role that a regulator can play in defining both the value of scientific projects and the future population of independent scientists.     

Supply chain disruption management: Global convergence vs national specificity

As the supply chain expands overseas, there is a growing need for managing supply chain disruptions from a cross-national perspective. This paper investigates whether or not supply chain disruption management (SCDM) can be universally applied. The universality of the SCDM framework is analyzed through the convergent versus divergent (national specificity) debate. On an empirical level, based on a unique sample of 1403 firms representing 69 countries all over the world and using the GLOBE framework, we compare the level of importance of the eight constructs of our framework and the patterns of relationship between the constructs, across eight country clusters. MANOVA analysis and multiple regression analysis were applied to obtain relevant empirical insights. Surprisingly, our findings suggest that while risk sources are different in the various countries, the implementation of SCDM practices is universal. These results support the existing tension between the convergence theory and the national specificity argument.     

Designing experiences strategically

Companies willing to enter into the experience economy have available procedures for experience design and evaluation but not for strategic decision-making on what experiences to incorporate into their offering. This study presents a procedure for identifying experiences and for assessing their customer value. The fieldwork consists of a logbook technique for experience identification and their subsequent strategic assessment considering people's perceptions of the influence each experience has in their quality-of-life, their interest in living each experience, and their previous knowledge of each experience. The paper focuses on experiences related to environmental design. In that setting, the procedure led to the identification of 13 different experiences. A clustering analysis identified six groups of experiences accordingly to the perception of 142 persons interviewed: experiences that have a ready market, experiences with a market to captivate, experiences with a potential market, experiences indifferent for a given market, experiences with lost clients and experiences that need a better adjustment to the market.     

Analysis of the promotion of cigarettes at the point of sale and its attractiveness to children

Smoking habit seriously affects public health in a number of direct and indirect ways. The study reported here took place in Brazil and examined the promotional activities of the tobacco industry at the point of sale, with particular reference to their impact on children. Tobacco control policies are generally in place in developed countries, and smokers typically develop the habit while still young. Trained researchers visited a stratified sample of 429 retail outlets in the city of São Paulo, comprising the local equivalents of bars, snack bars, luncheonettes and pubs. Data for analysis were collected by direct observation at the point of sale and interviews with the person deemed to be in charge of the outlet visited. The results indicate that the tobacco industry is displaying its products within full view of children and making use of the sales' incentives offered to the retailer. The findings contribute significantly to the study of the effect of promotion at the point of sale on young smokers and can inform the policy debate on the increasing regulation of tobacco marketing promotional methods.