Population aging challenges pay-as-you-go pension systems. Solving the associated funding problem constantly motivates reform processes. In addition to an aging population, specific regulations of the German public pension system lead to an increasing financial burden of national finances. To...

Due to Germany’s specific farm structure, the progressive modulation of direct payments decided within the Health Check of the Common Agricultural Policy (CAP) is of particular relevance for German agriculture. In this paper we apply the agent-based model AgriPoliS to shed some light on the...

Das (Oper Res 25(5):835–850, <CitationRef CitationID="CR4">1977</CitationRef>) considered the optimization of a cost function associated with an (S − 1, S) inventory model assuming the parameters to be the initial number of items in the stock and the service rate. A similar optimization problem associated with an M/E <Subscript> k </Subscript>/1 queueing...</subscript></citationref>

Firms adjust to differences in market size and demand uncertainty by changing the frequency and size of their export shipments. In our inventory model, transportation costs and optimal shipment frequency are determined on the basis of demand as well as inventory and per shipments costs. Using a...

We consider the extended economic production quantity (EPQ) problem when demand follows a Poisson process in a production system. A fixed lot sizing policy is implemented to minimize fluctuation of workload, and to smooth production planning and inventory control. The considered costs include...

In this paper, we use a Markov decision process (MDP) to model the joint inventory-promotion decision problem. The state variable of the MDP represents the demand state brought about by changing environmental factors as well as promotion decisions. The demand state in a period determines the...