Many e-tailers providing attended home delivery, especially e-grocers, offer narrow delivery time slots to ensure satisfactory customer service. The choice of delivery time slots has to balance marketing and operational considerations, which results in a complex planning problem. We study the...

In this paper, we explain how Internet retailers can learn from proven revenue management concepts and use them to reduce costs and enhance service. We focus on attended deliveries as these provide the greatest opportunities and challenges. The key driver is service differentiation. Revenue...

In this paper, we explain how Internet retailers can learn from proven revenue management concepts and use them to reduce costs and enhance service. We focus on attended deliveries as these provide the greatest opportunities and challenges. The key driver is service differentiation. Revenue...

Many e-tailers providing attended home delivery, especially e-grocers, offer narrow delivery time slots to ensure satisfactory customer service. The choice of delivery time slots has to balance marketing and operational considerations, which results in a complex planning problem. We study the...

The interest in studying the isochrone portrait of relaxation oscillators with a stable limit cycle is that knowledge of this portrait implies knowledge of the Phase Transition Curve (PTC) and the PTC allows one to obtain, in the case of impulsive forces, a one-dimensional approximation of the...

This paper describes a refrigeration system using a natural refrigerant that has been developed to reduce significantly both direct and indirect greenhouse gas emissions. The new system uses both R-404A and CO₂ (R-744) as refrigerants. The new system has very low global warming potential...

The aim of this study is to test the existence of balance of a payments constraint on the long run economic growth of the Turkish economy. The balance of payments constrained growth (BPCG) model which was developed by Thirlwall (1979) and extended by Thirlwall and Hussain (1982) is tested over...

In 1979, Tom Weisskopf found that the crucial late-expansion period of the business cycle, in which the output continues to expand but the profit rate begins to fall, was best explained for his 1949-1975 U.S. data as a result of increasing real wage gains higher than real productivity gains....

This paper is a case study of a particularly important and well known experiment in participatory economic democracy, participatory budgeting (PB) in Porto Alegre under the Workers’ Party. Its intention is to draw both positive and negative lessons from this experience. There are three...