We consider a location problem where the distribution of the existing facilities is described by a probability distribution and the transportation cost is given by a combination of transportation cost in a network and continuous distance. The motivation is that in many cases transportation cost...

In many decision problems, criteria occur that can be expressed as ratios. The corresponding optimization problems are nonconvex programs of fractional type. In this paper, an algorithm for the numerical solution of these problems is introduced that converges always at superlinear speed....

"The economic collapse in eastern Germany caused a previously unprecedented unemployment in the new Federal states, which affected eastern German women overproportionally. Whereas in the times of the German Democratic Republic it was unproblematic for women to combine job and family, it could be...