In the ideal Black-Scholes world, financial time series are assumed 1) stationary (time homogeneous) and 2) having conditionally normal distribution given the past. These two assumptions have been widely-used in many methods such as the RiskMetrics, one risk management method considered as...

The paper analyses the impact of venture capital finance on growth and innovation activities of young German firms. Among other variables, our panel of firm data includes data on venture capital funding and patent applications. With statistical matching procedures we draw an adequate control...

This paper analyses the effects of innovation networks on product and pro-cess innovation and sales growth of high technology SMEs. Innovation net-works are positively related to both product and process innovation, i.e. know-ledge creation. One exception is the negative effect of innovation...

This paper is an empirical test of the hypothesis that the appropriateness of differentbusiness strategies is conditional on the firm’s distance to the industry frontier. We usedata on four 2-digit high-tech manufacturing industries in the US over the period 1972-1999, and apply...

We study a two-stage R&D project with an abandonment option. Two types of uncertaintyinfluence the decision to start R&D. Demand uncertainty is modelled as a lottery between aproportional increase and decrease in demand. Technical uncertainty is modelled as a lotterybetween a decrease and...

While a market economy seeks equilibrium, a knowledge-based economy may upset this tendency towards stabilization by adding the feedback of globalization. The interaction among the three subdynamics of economic exchange, technological innovation, and institutional control can be captured with a...

This paper deals with the impact of the arrival of public information on the intraday trading of highly liquid stocks quoted on the Paris Bourse.

This paper examines latent risk factors in models for migration risk. We employ thestandard statistical framework for ordered categorical variables and induce dependencebetween migrations by means of latent risk factors. By assuming a Markov process forthe dynamics of the latent factors, the...

The aim of this paper is to explain why cross-sectional estimated migration correlations displayed in the academic and professional literature can be either not consistent, or inefficient, and to discuss alternative approaches. The analysis relies on a model with stochastic migration in which...

In this paper we explain how to use rating histories provided by the internal scoring systems of banks and by rating agencies in order to predict the future risk of a set of borrowers. The method is developed following the steps suggested by the Basle Committee. To introduce both migration...