Im Rahmen dieser Einführung werden jene Umweltfaktoren vorgestellt, die denHintergrund bilden, vor dem sich deutsche Unternehmen bewegen, wenn sie sich mitdem Phänomen E-Commerce auseinandersetzen. Dazu werden in Punkt 1.1wichtige Internet-Größen wie Anzahl der Nutzer, die Anzahl der...

We look at how large international datasets can improve forecasts of national activity. Weuse the case of New Zealand, an archetypal small open economy. We apply “data-rich” factorand shrinkage methods to tackle the problem of efficiently handling hundreds of predictordata series from many...

In this paper, we measure the impact of a downturn in the automobile industry on thesolvency of 28 large German banks. The choice of the stressed sector is motivated by theimportant role which the automobile industry plays in the German economy, not the leastbecause of its close ties to other...

Using the Consensus Economics dataset with individual expertforecasts from G7 countries we investigate determinants of disagreement (crosssectionaldispersion of forecasts) about six key economic indicators. Disagreementabout real variables (GDP, consumption, investment and unemployment)has a...

Forecasting the world economy is a di¢ cult task given the complex interre-lationships within and across countries. This paper proposes a number ofapproaches to forecast short-term changes in selected world economic vari-ables and aims, …rst, at ranking various forecasting methods in terms...

This paper investigates whether information from foreign yield curves helps forecast domestic yieldcurves out-of-sample. A nested methodology to forecast yield curves in domestic and internationalsettings is applied on three major countries (the US, Germany and the UK). This novel methodologyis...

Companies that want to grow face a fundamental dilemma: They can only increasetheir current base of sales substantially if they introduce really new products into themarket. However, the risk of a market failure also increases with the degree of innovativenessof the product (Booz, Allen &...

The most relevant practical impediment to an application of the Markowitz portfolio selectionapproach is the problem of estimating return moments, in particular return expectations. We analyzethe consequences of using return estimates implied by analysts’ dividend forecasts under the...

A non-stationary regression model for financial returns is examined theoretically in this paper.Volatility dynamics are modelled both exogenously and deterministic, captured by a nonparametriccurve estimation on equidistant centered returns. We prove consistency and asymptotic normalityof a...

In this paper we first investigate the validity of a general Value at Risk approach, which iswidely used for risk management in banking and insurance companies. We discuss and widely rejectthe conventional assumptions, e.g. independent identically distributed normal returns, and as...