Efficiency and productivity measurement in the insurance industry has attracted great interest from academicians, practitioners, financial market analysts, insurance regulators, and researchers; however, the near absence of empirical work on the productivity changes of the life insurance...

Background A good health care system and, especially, the provision of efcient hospital care are the goals of national and regional health policies. However, the scope of general hospital care in the 16 federal states in Germany varies considerably from region to region. The objectives of this...

In diesem Beitrag stellen wir einen Weg vor, der es erlaubt, grundsätzliche Aussagen darüber zu treffen, dass wirtschaftliches Handeln schädliche Auswirkungen auf die Umwelt mit sich bringt. Diese Auswirkungen sind naturwissenschaftlich bedingt und treten insbesondere in der...

This paper examines the multi-dimensional efficiency of the Islamic banking sector and its determinants, including the impacts of the COVID-19 pandemic. To do that, we use a novel approach of two-stage data envelopment analysis (DEA) double frontiers to evaluate the overall efficiency of 79...

We develop a model of competition in prices and infrastructure among mobile network operators. Consolidation can increase market power, but economies of scale, which we derive from physical principles, lead to more efficient data transmission. Estimating our model with French consumer and...

I define constrained efficient direct mechanisms as those that are not Pareto dominated within the set of direct mechanisms that satisfy some given feasibility constraints – incentive compatibility and other constraints. I show a standard equivalence with maximization of a social welfare...