Wege zwischen beruflicher und hochschulischer Bildung in den deutschsprachigen Ländern

Der neue europ?ische Regulierungsrahmen für Telekommunikation, der bis Mitte 2011 in deutsches Recht umgesetzt werden muss, bietet M?glichkeiten zur Neuausrichtung der Regulierungsziele. Die Autoren diskutieren in diesem Beitrag die M?glichkeiten und potentiellen Probleme der vorgeschlagenen Instrumente sowie weiterer politischer Initiativen der Bundesregierung und der Europ?ischen Kommission in Hinblick auf die ambitionierten Ziele einer fl?chendeckenden Versorgung mit schnellen Internetzug?ngen.     

TRUE UPPER BOUNDS FOR BERMUDAN PRODUCTS VIA NON-NESTED MONTE CARLO

We present a generic non-nested Monte Carlo procedure for computing true upper bounds for Bermudan products, given an approximation of the Snell envelope. The pleonastic "true" stresses that, by construction, the estimator is biased above the Snell envelope. The key idea is a regression estimator for the Doob martingale part of the approximative Snell envelope, which preserves the martingale property. The so constructed martingale can be employed for computing tight dual upper bounds without nested simulation. In general, this martingale can also be used as a control variate for simulation of conditional expectations. In this context, we develop a variance reduced version of the nested primal-dual estimator. Numerical experiments indicate the efficiency of the proposed algorithms.     

Corporate Fraud and Managers’ Behavior: Evidence from the Press

Government-sponsored enterprises (GSEs) and quasi-autonomous non-governmental organizations (quangos) comprise a powerful organizational sector that has been criticized for its lack of accountability to governments and their citizens. These organizations are established to serve the public as a whole by targeting the needs of particular groups or fulfilling specific functions. Often they use practices adopted from the business sector, and sometimes they enter the marketplace as profit-making enterprises. In light of the contribution of GSE Fannie Mae to the 2008 world economic crisis, the impact of this sector on effective democratic government bears further examination. In this article, I present a systems model that suggests how researchers might comprehensively assess the accountability of organizations in this sector, here termed the “gray sector,” with respect to their government missions. I focus on four systems dimensions: mission, organizational design, organizational outcomes, and the information feedback process. Organizational design and the nature of the sector population are cited as emerging issues of particular importance.     

Ecological discounting

Which rates should we use to discount costs and benefits of different natures at different time horizons? We answer this question by considering a representative agent consuming two goods whose availability evolves over time in a stochastic way. We extend the Ramsey rule by taking into account the degree of substitutability between the two goods and of the uncertainty surrounding the economic and environmental growths. The rate at which environmental impacts should be discounted is in general different from the one at which monetary benefits should be discounted. We provide arguments in favor of an ecological discount rate smaller than the economic discount rate. In particular, we show that, under certainty and Cobb-Douglas preferences, the difference between the economic and the ecological discount rates equals the difference between the economic and the ecological growth rates. Using data about the link between biodiversity and economic development, I estimate that the rate at which changes in biodiversity should be discounted is 1.5%, whereas changes in consumption should be discounted at 3.2%.     

Small & Medium Gold & Fashion Enterprises (SMEs) in Arezzo,Italy: Competitive Challenges and Strategic Implications

ABSTRACT

This paper provides some empirical evidence on organizational characteristics and strategies of firms in the Italian gold and fashion industries. The analysis is based on a data set of three SME clusters in Arezzo (a city and province in Tuscany, Italy, southeast of Florence) which led us to the identification of two main alternative strategies which can be implemented when facing the new global competition: a firm-centered brand strategy and an outsourcing strategy (a supply alliance with co-branding possibilities with one or more large Italian firms). We analyzed the resources and competencies of firms that adopted different export marketing strategies and further explored the relationship between strategic choices and performance of participating firms (measured in terms of growth, innovation, and export capabilities). The results show that the choice of a strategy is strongly influenced by the ability of SMEs to respond to changes in consumer behavior and competition, and that some variables significantly affect performance. Both strategies can be effective, and in some cases it is suggested to follow the middle of the road competitive approach: combining the two strategies, exporting own brand directly to the end markets and collaborating with a large firm in order to achieve a sustainable and significant competitive advantage.