We study a firm that makes new products in the first period and uses returned cores to make remanufactured products (along with new products) in future periods. The remanufactured product is differentiated from the new product, so the firm needs to choose differentiated prices. We analyze the monopoly environment in two-period, multi-period (three, four and five) and infinite planning horizons,...

New tobacco products, designed to attract consumers who are concerned about the health effects of tobacco, have been appearing on the market. Objective evaluation of these products requires, as a first step, data on their potentially toxic constituents. Tobacco-specific nitrosamines (TSNAs) are an important class of carcinogens in tobacco products, but virtually no data were available on their ...

The results which I will describe arise from joint work with Bill Moran, ru.rd with Dani Berend, Charles Pearce and Andy Pollington. The common theme is the formalism of Riesz product measures, for these have proved to be exceptionally useful in the study of normal numbers. Elsewhere in these proceedings, Tony Dooley describes some of our joint work on the related class of G-measures (G for Gib...

In this issue of the Journal, Choi et al. (1) add a new twist to the ongoing controversy concerning the health benefits of dairy consumption by showing a positive relation between the numbers of dairy servings consumed daily and brain concentrations of glutathione (GSH). In a group of older, healthy individuals preselected to cover a wide range of dairy intakes, GSH concentrations were shown to...

We consider the diffusion of new products in the discrete Bass-SIR model, in which consumers who adopt the product can later “recover” and stop influencing their peers to adopt the product. To gain insight into the effect of the social network structure on the diffusion, we focus on two extreme cases. In the “most-connected” configuration, where all consumers are interconnected (complete networ...

Correspondence to: S Conroy, The Medical School, Derbyshire Children’s Hospital, Uttoxeter Road, Derby DE22 3DT, UK; Sharon.conroy@ nottingham.ac.uk _________________________ E czema is the most common chronic skin disease, affecting 15 to 20% children in developed countries. Altered T cell function appears to be the primary immunological abnormality and patients have raised levels of IgE. Most...

New contraceptive methods provide greater choice in terms of effectiveness, management of side-effects, convenience and frequency of administration and flexibility, but make the decisions about contraception more complex. There are limited data on the factors that determine women's choices among these alternatives, to inform providers about the factors which are most important to women, or to p...

Polyhydroxyalkanoates (PHA) are natural polyesters stored by a wide range of bacteria as carbon source reserve. Due to its chemical characteristics and biodegradability PHA can be used in chemical, medical and pharmaceutical industry for many human purposes. Over the past years, few Burkholderia species have become known for production of PHA. Aside from that, these bacteria seem to be interest...