Space - and in particular land use - forms the geographical projection of the dispersion of human activities. In the light of the environmental externalities of these activities, space demonstrates also the spatial dispersion of environmental decay. It is clear that space is thus also the...

The identification of innovation in services is problematic. This seems remarkable, since many papers have emerged, which emphasize distinctive features of service innovation. However, some of these contributions strain the Schumpeterian innovation opinion or describe in fact the role of service...

In this paper we examine the perceptions of entrepreneurs and other concerned individuals: which factors do they consider critical for success in the innovation process? From the perspective of the respondents, the entrepreneur is the most important factor in the innovation process. Internal...

In this paper we investigate hedging a stock portfolio with stock index futures. Instead of defining the hedge ratio as the minimum variance hedge ratio, we consider several measures of downside risk: the semivariance according to Markowitz [ 19591 and the various lower partial moments according...