We develop a model where workers may enter self-employment or search for jobs as employees and where there is heterogeneity across workers’ managerial ability. Workers with higher skills will manage larger firms while workers with low managerial ability will run smaller firms and will be in...

We develop a model where workers may enter self-employment or search for jobs as employees and where there is heterogeneity across workers' managerial ability. Workers with higher skills will manage larger firms while workers with low managerial ability will run smaller firms and will be in...

Abstract: This paper deals with a special vehicle routing problem with backhauls where each customer receives items from a depot and, at the same time, returns items back to the depot. Moreover, time windows are assumed and three-dimensional loading constraints are to be observed, i.e. the items...

Supermarkets typically order their goods from a centrally located distribution center (warehouse). Each order that the warehouse receives is characterized by the requested items, the location of the respective supermarket and a due date by which the items have to be delivered. For processing an...