Reservoir operation cannot be carried out without due heed to surface water and groundwater resources, since neglecting either will have irreversible consequences. Optimal operation of the Zayandehrood Dam which supplies water into the Zayandehrood River basin in the central plateau of Iran is a...

We present experiments assessing the performance of different Java Development Kits (JDKs) with respect to agent-based models. In our experiments, we measure the execution time of two prototypical agent-based models written in Java under different JDKs and operating systems. Our findings suggest...

A case is set up concerning a fictitious Dutch high-speed railway project involving passenger transport. Direct welfare effects are calculated using a standard transport model. On the basis of the case description and the direct effects, five models calculate total welfare effects and wider...

This study compares the predictive performance of several mathematical programming models. Using the cropping patterns, yields and crop gross margins of eighteen farms over a period of five years we compare the models' optimum solutions with observed crop distributions after the Reform of the EU...

This paper analyzes high-technology firms within the European Union to determine the factors that influence performance through business productivity. The study examines six different factors that are representative of entrepreneurial activity, firstly from a purely business standpoint, and...

This study considers regression-type models with heteroscedastic Gaussian errors. The conditional variance is assumed to depend on the explanatory variables via a parametric or non-parametric variance function. The variance function has usually been selected on the basis of the log-likelihoods...