In online purchasing, customers may return products due to dissatisfaction with the quality of product, and receive a refund based on policy, which is determined by distributors. Online distributors can offer generous policies attract more customers, but at cost reducing total profits. this paper, effect pricing complementary (products sold together other items) in selling under policy investig...

We consider two reverse logistics systems where returned products are as good as new. For the first system, the product return flow is independent of the demand flow.We prove that the optimal policy is of base-stock type and we establish monotonicity results for the optimal base-stock levels, with respect to the system parameters (arrival rate, production rate, return rate, production cost, los...

Sick leave due to mental disorders is a societal problem. It carries a high cost in terms of loss of labor productivity and absenteeism. Partial remission increases the risk of relapse after a return to work. There is sometimes a difference between the ability to return to work as judged by a general practitioner (GP) and the needs of the workplace. GPs are the main controllers of treatment and...

This paper develops an economic production quantity model in a three-echelon supply chain composing of a supplier, a manufacturer and a wholesaler under two scenarios. As the first scenario, we consider a return contract between the outside supplier and the supplier and also between the manufacturer and the wholesaler, but in the second one, the return policy between the manufacturer and the wh...

We consider a Diamond-type model of endogenous growth in which there are three assets: fiat money, government bonds, and equity. Because of productivity shocks, the equity return is uncertain, and risk-averse investors require a positive equity premium. Typically, there exist two steady states, but only one of them turns out to be stable. Tight monetary policy is harmful for growth in the stabl...

We analyze extreme movements of the main stocks market indexes in the European Union. We find that the Sweden and UK markets are the preferred ones for risk averse investors since they present the best risk-return performance. Moreover, the UK market is found to have a very low dependence with the rest of the European financial cycles, being the best one (in terms of risk-return) available for ...