Abstract is not available

We develop an approximation for the optical potential in a solid, valid at intermediate energies, i.e. energies greater than 50 eV. The present approximation for the optical potential builds on the GW-expression. We separate the RPA polarization propagator into a core electron and a valence electron, and can then achieve a corresponding separation of the optical potential. We apply this method to

Associations are not random. Semantic memory is structured in a way that when hearing a category name a listener will automatically think of exemplars belonging to this category. The order in which exemplars come to mind and the frequency of retrieval of exemplars across individuals are measures of category-exemplar associative strength. Associative strength affects a broad range of psychological

The World Health Organization suggests mental ill health in terms of depres- sion soon to be the highest-ranking disease problem in the Western part of the world. However, some critics argue that the alarming reports on mental ill health have their ground in the methods of inquiry themselves and refer to medicalization as an important issue. The aim of this article is to explore and illuminate the

Political commitments in our time are often described as characterized by political de-collectivization and increasing individualism. In the article this polarity between individualism and collectivism is addressed. Empirically, it is based on a survey which 1066 global justice movement activists participated in. Among these, activism has both strong individual and collective orientations. Persona

Objective: To conceptualize women's and their partners' experiences and ways of handling the situation before, during, and after second trimester ultrasound examination with the diagnosis of a nonviable fetus. Design: A grounded theory study. Setting: A Swedish regional hospital. Participants: Nine women and 6 men (n=15) were interviewed within a year of the event. Results: The core category was U

Clonal evolution in cancer is intimately linked to the concept of intratumor cellular diversity, as the latter is a prerequisite for Darwinian selection at the micro-level. It has been frequently suggested in the literature that clonal evolution can be promoted by an elevated rate of mutation in tumor cells, so-called genomic instability, the mechanisms of which are now becoming increasingly well

In this paper, we investigate a one-warehouse multiple-retailer system, where the inventory control decisions are coordinated using a near optimal induced backorder cost, β*. All installations use continuous review installation-stock (R, Q) policies. The analysis builds on an approximation model where the stochastic warehouse delays are replaced by their correct averages. The contributions include

ACCESSIBLE SUMMARY: • Patients in acute psychiatric care perceive compulsory treatment as good if they are given good care, if they are given the shelter they need and if they are given help with understanding what is happening. • They feel respected if they are allowed to retain their autonomy and are invited to participate, even though they are in compulsory treatment. • It is important to take