Wirtschaftslehre der Unternehmung in Hauptgedanken ihrer theoretischen Begründung

Ohne ZusammenfassungGewidmet der Tschechischen Technischen Hochschule in Prag — dieser ältesten öffentlichen ingenieurwissenschaftlichen Schule Europas —zum 250-jährigen Jubiläum (1707 bis 1957) im festen Glauben an eine baldige Vereinigung aller Prager Hochschulen technischer Richtung in das organische Ganzeder Technischen Universität und in der Überzeugung von der Notwendigkeit der wirtschaftswissenschaftlichen Fakultät als eines unabtrennbaren Bestandteiles dieser Universität.     

Hayek Reads the Literature on the Emergence of Norms

Hayek’s approach to cultural and institutional evolution has been frequently criticized because it is explicitly based on the controversial notion of (cultural) group selection. In this paper this criticism is rejected on the basis of recent works on biological and cultural evolution. The paper’s main contention is that Hayek employed group selection as a tool for the explanation of selection among several equilibria, and not as a vehicle for the emergence of out of equilibrium behavior (i.e., altruism). The paper shows that Hayek’s ideas foreshadowed some of the most promising developments in the current literature on the emergence of norms. JEL Classification: B31, B41     

Aid and Poverty in Africa: Do Well‐being Measures Understate the Progress?

Abstract: In the last 15 years international aid donors to Africa have shifted their focus dramatically toward health and education; the share of social sector support in total aid rose from 33 per cent to 60 per cent from 1990–94 to 2000–2004 alone. If this aid has been effective, it is unlikely to be captured in GDP or income poverty figures. This paper uses the Demographic and Health Survey at multiple points in time to explore changes in well‐being in ten sub‐Saharan African countries. It compares the evolution of both assets and health which are considered as the two main dimensions of well‐being. These dimensions are simultaneously estimated using the structural equation models with latent variables that have been developed in the psychometric literature. The comparisons of well‐being across time in each country are based on the stochastic dominance analysis. The main results suggest that assets and health have improved during the last two decades in most of these countries. A decline in assets is observed for three countries while health deteriorates in two countries. The reduced poverty appears to be explained less by the aid than other factors in most cases.     

Factors influencing purchase intent in virtual worlds: a review of the literature

Previous empirical studies have identified several factors that seem to play a role in determining purchase intent in virtual worlds; three-dimensional online environments in which users interact while represented by their avatars. So far however, a clear overview of these factors is lacking, and the question that remains is what factors affect purchase intent most. Therefore, this study aims to create an overview of factors that influence users’ purchase intent in virtual worlds, and to subsequently identify the most influential factors. To conduct this review, relevant literature was gathered using a variety of search engines and keywords. An article had to explicitly study factors influencing purchase intent in virtual worlds in order to be included in this review. This search method resulted in a selection of twelve relevant articles that were used for further analysis. Results show that perceived enjoyment, social influence, customization and ease of use are important factors that influence purchase intent in virtual worlds. Enjoyment of the virtual world, beliefs and attitudes of others, avatar customization, and easy-to-use virtual world applications can thus increase users’ willingness to purchase products in the virtual world. Practical implications as well as limitations and suggestions for future research are discussed.     

Phases of Globalization,Wages and Inequality

Open Economies Review - To analyse the globalization-wages-inequality relationship, we extend the North-South Heckscher-Ohlin-Samuelson (HOS) model by assuming (i) that the size of the South...     

Aggregate implications of indivisible labor, incomplete markets, and labor market frictions

We study the impact of tax and transfer programs on steady-state allocations in a model with search frictions, an operative labor supply margin, and incomplete markets. In a benchmark model that has indivisible labor and incomplete markets but no trading frictions we show that the aggregate effects of taxes are identical to those in the economy with employment lotteries, though individual employment and asset dynamics can be different. The effect of frictions on the response of aggregate hours to a permanent tax change is highly nonlinear. There is considerable scope for substitution between “voluntary” and “frictional” nonemployment in some situations.     

Assessing Productivity Gains from International Trade in a Small Open Economy

Empirical evidence suggests that exporter firms tend to charge higher markups than non-exporters due to trade barriers. The exporters’ markup premium, however, may disappear in a special case, namely when the home country is small relative to its trade partners and trade barriers are low. This can be because competition is more intense in the large export destination than in the small home country, so that firms are able to set higher markups for locally sold products but not for exports. This paper provides empirical evidence on the validity of this special case by estimating markups for firms in Luxembourg who generally export to larger countries. The estimated negative markup premium for exporters has important implications for the productivity measurement. In a sufficiently small open economy, exporters’ productivity may be biased downward, when the firm-level markup variation is not controlled for in the productivity estimation. The bias in the productivity estimates further leads to the inaccurate conclusion that openness to international trade lowers allocative efficiency.     

Investment bank monitoring and bonding of security analysts’ research

We assess investment banks’ influence over the agreement between their analysts’ research behavior and their clients’ interests, in the post-reform era. Competing banks discipline their analysts with worse career outcomes for producing biased reports, issuing shirking reports, and for involvement in the earnings guidance game, showing meaningful monitoring of their analysts. Highly reputable banks provide more monitoring discipline of their analysts and bonding of their moral hazard than other banks. The findings agree with the banks taking responsibility for aligning analysts’ behavior with clients’ interests.     

The multivariate Variance Gamma model: basket option pricing and calibration

In this paper, we propose a methodology for pricing basket options in the multivariate Variance Gamma model introduced in Luciano and Schoutens [Quant. Finance 6(5), 385–402]. The stock prices composing the basket are modelled by time-changed geometric Brownian motions with a common Gamma subordinator. Using the additivity property of comonotonic stop-loss premiums together with Gauss-Laguerre polynomials, we express the basket option price as a linear combination of Black & Scholes prices. Furthermore, our new basket option pricing formula enables us to calibrate the multivariate VG model in a fast way. As an illustration, we show that even in the constrained situation where the pairwise correlations between the Brownian motions are assumed to be equal, the multivariate VG model can closely match the observed Dow Jones index options.