Wichtige betriebswirtschaftliche Fachkonferenzen

Ohne Zusammenfassung     

Project evaluation: Externalities must not be disregarded

While technology assessment is now usually performed at government level, methods proposed in the literature for evaluating single R and D projects by industrial concerns do not generally dedicate sufficient attention to possible externalities.
The authors propose a model for evaluating R and D projects based on the concept of 'limiting constraints' imposed by the different organizations or groups of interest with which the company interfaces.     

ECONOMIC GROWTH, INCOME AND HAPPINESS: AN EXPLORATORY STUDY

The pursuit of high economic growth is considered desirable as it generates an increase in a nation's wealth, income, employment and output. The rising income should enable consumers to purchase more goods and services, which in turn should result in enhanced utility and subjective happiness. Empirical studies suggest that higher income resulting from high rates of economic growth contribute to poverty alleviation and life satisfaction in low income countries. Higher income raises the happiness of the poor. In developed countries, higher income does not seem to "buy" higher happiness, once a threshold level of income is reached. This exploratory study seeks to examine the quantitative and qualitative sources of happiness. A higher absolute level of income is found to be significantly related to subjective happiness. Among the non-income factors, family togetherness, a good working environment and a higher level of education can contribute to making people happier. Happiness thus involves more than just economic growth and income.     

Mobile Termination: What is the “Right” Charge?*

The regulation of fixed-to-mobile (F2M) termination charges has become increasingly important in Europe, Australia, and New Zealand under the Calling Party Pays principle. In the absence of any regulation, mobile operators have an incentive to set F2M termination charges “too high”. We show that the setting of the optimal F2M termination charges depends on the significance of network externalities, the intensity of competition in the mobile sector, and the distribution of customer preferences. We also discuss the merits of possible remedies which are not very intrusive. Tommaso Valletti has advised the European Commission and the UK regulator (OFCOM) on mobile termination and Frontier Economics has acted as advisor to a number of mobile operators on the same issue. The views expressed in this paper are those of the authors alone. We thank Carlo Cambini, Yulia Kossykh, participants to the 15th Biennial International Telecommunications Society Conference, the 3rd International Conference on Applied Infrastructure Research in Berlin, for their comments. We also thank the editor Michael Crew and two anonymous referees for many suggestions that have greatly improved the paper.     

Disability Risk Management and Postinjury Employment of Workers With Back Pain

We analyze the outcomes of occupational back pain among four large employers that use one or more of the following disability management practices: aggressive return to work, claims management, medical management, or time‐limited job accommodations. Outcomes measured at 6 and 12 months postonset include: duration of initial work absence and the probability of returning to stable employment. Employment outcomes are better in firms with more proactive return‐to‐work policies than in firms with more restrictive policies. We devise a statistical test for attrition bias and conclude that sample attrition does not significantly alter our results.     

Empirical bias in intraday volatility measures

Intraday volatility measures have recently become the norm in risk measurement and forecasting. This article empirically investigates the unbiasedness of three of these measures over four different datasets. We find that the three measures are significantly biased and that the bias can have either sign.     

Dreaming of the West: The power of the brand in Soviet Lithuania, 1960s–1980s

Abstract

The article reveals the interest in foreign trademarks observed in Lithuanian society from the 1960s through the 1980s, when the demand for brand names spread after Western culture reached the Soviet Union. The consumption of Western cultural products, or imitations thereof, became one of the key symbolic expressions of freedom in Soviet society. In Lithuania, the most popular clothes were those bearing fake trademarks, even though Soviet authorities attempted to prevent the desire for and the wearing of these garments through the use of ideological tools.     

Long-run risk-return trade-offs

Excess market returns are correlated with past market variance. This dependence is statistically mild at short horizons (thereby leading to a hard-to-detect risk-return trade-off, as in the existing literature) but increases with the horizon and is strong in the long run (i.e., between 6 and 10 years). From an econometric standpoint, we find that the long-run predictive power of past market variance is robust to the statistical properties of long-horizon stock-return predictive regressions. From an economic standpoint, we show that, when conditioning on past market variance, conditional versions of the traditional CAPM and consumption-CAPM yield considerably smaller cross-sectional pricing errors than their unconditional counterparts.