In this paper we consider stochastic optimization problems for an ambiguity averse decision maker who is uncertain about the parameters of the underlying process. In a first part we consider problems of optimal stopping under drift ambiguity for one-dimensional diffusion processes. Analogously...

This paper presents new results on the Edgeworth expansion for high frequency functionals of continuous diffusion processes. We derive asymptotic expansions for weighted functionals of the Brownian motion and apply them to provide the Edgeworth expansion for power variation of diffusion...

There has been a recent surge of interest in social economics and social capital. Articles on social capital that are published in the last five years constitute more than 60 percent of all articles on social capital. Research on social capital is now massive and spans sociology, economics,...

Using the reaction of hydrogen with oxygen to water in order to produce electricity and heat, promises a high electrical efficiency even in small devices which can be installed close to the consumer. This approach seems to be an impressive idea to contribute to a viable future energy supply...

In this paper we briefly review social enterprise in the context of India before developing a conceptual framework highlighting the different components that make up a regional social enterprise ecosystem including entrepreneurs, financial and non-financial support, education and research,...

In recent decades there has been a sharp increase in Chinas scientific output. Behind its fast growth, little is known about Chinas comparative advantages in different academic disciplines. Meanwhile, despite Chinas rising position now in second place worldwide for research output, its research...

We study the scaling behavior in currency exchange rates. Our results suggest that they satisfy scaling with an exponent close to 0.5, but that it differs qualitatively from that of a simple random walk. Indeed price variations cannot be considered as independent variables and subtle...

This paper describes a simple diffusion process whereby to discover the dynamics of emergent smart business network structures and their performance in view of business collaboration patterns over time. They include the destabilizing effects of business relationship tie-up’s or break-downs,...

In this paper, we consider the robust estimation for a certain class of diffusion processes including the Ornstein–Uhlenbeck process based on discrete observations. As a robust estimator, we consider the minimum density power divergence estimator (MDPDE) proposed by Basu et al. (Biometrika...

This paper analyses and compares the determinants of innovation in the service industry and its impact on labour productivity at the firm level in three countries of Latin America Chile, Colombia, and Uruguay. The main findings show that, similar to what is observed in the manufacturing...