The need for product customisation is driving industrial companies towards a very large product variety, which a€ects many functions of a company, including the after-sales. Systematic maintenance records of very di€erent product individuals cannot be kept without an abstract view to the population of delivered products. However, the older the product individual, the less systematically recorde...

www.thelancet.com Vol 383 March 8, 2014 867 sexual violence that we did not ask about, which is a matter of regret. When designing the questionnaire, about 5 years ago, sexual violence had not fully come to the fore as a topic of public health importance and new questions were required to compete with a wide range of topics traditionally included in the survey. This is certainly a section of th...

We study subgame-perfect equilibria of the classical quality-price, multistage game of vertical product di¤erentiation. Each …rm can choose the levels of an arbitrary number of qualities. Consumers’valuations are drawn from independent and general distributions. The unit cost of production is increasing and convex in qualities. We characterize equilibrium prices, and the e¤ects of qualities on ...

A case-control study of multiple sclerosis (MS) has been carried out in western Norway. The study included 93% of the patients who had clinical onset of MS in the county of Hordaland during the years 1976-86 (N = 155) and 200 controls, marginally matched for age, sex and residence. There was no statistically significant difference between MS patients and controls with regard to exposure to orga...

Demand for product characteristics is examined within the context of models that allow for both corner and interior solutions corresponding to zero and non-zero demand. Product attribute information is associated with marginal utility and curvature (satiation) parameters of various utility functions. Empirical applications demonstrate the need for incorporating characteristics in a fairly gener...

We present three mechanisms for maintaining consistent product views in a distributed product information data base. The mechanisms are used when one of the views makes a change to the product model and the other views must be updated to maintain consistency.