A straightforward gradient expansion of the exchange energy of a perturbed electron gas is performed. Studied perturbations range from very weak to those that produce, e.g., a silicon-like band structure with a band gap. The expansions involve density gradients up to fourth degree and we include all terms originating in linear- and second-order response theory. The expansion reproduces exactly cal

This paper deals with policy measures in the regional innovation system of Scania, Southern Sweden. Focus is dedicated to requirements on innovation policy from actors representing different industries. Previous studies have identified profound differences with regard the organization of knowledge sourcing between firms and other actors in industries drawing on different knowledge bases. In corres

This thesis discusses the feasibility of a low emittance lattice proposed for the MAX-IV storage rings. The MAX-IV facility will have two storage rings that are identical but operated at two different energies, 1.5 GeV for soft X-ray and 3 GeV for hard X-ray production. The lattice is built to take advantage of the small gap insertion devices that imply small apertures in the magnet elements whic

Popular Abstract in Swedish På 70-talet upptäckte man att en grupp mikroorganismer, som man tidigare katalogiserat som bakterier, bildade en helt egen grupp. Dessa kallades ärkebakterier och fick senare namnet arkéer. Arkéer är små (ca 1 tusendels millimeter) encelliga organismer precis som bakterier, men de skiljer sig på många sätt från dem. Till exempel har de en kemiskt annorlunda uppbyggd celDuring the last decade it has been discovered that around 2% of the soil-living prokaryotes belong to the domain Archaea. In many soils the most abundant archaeal group is the ammonia-oxidizing archaea (AOA) that, in addition to ammonia-oxidizing bacteria (AOB), preform the first and rate-limiting step in the nitrification process. The knowledge of factors that regulates the archaeal abundance and

The aim of this study of the Mexican Mural Movement is to analyze the myths it expressed and the myths it produced. The two main characters of my study are the minister José Vasconcelos and the painter Diego Rivera, because I believe these two personalities are indispensable for an understanding of the myths surrounding the Mexican Mural Movement. While the painter is well known, the personality a

A qualitative model of moisture distribution in screeded concrete slabs is presented. From this model it is possible to identify humidity changes in each material and thus determine corresponding moisture properties. The distribution of relative humidity, RH, was determined in nine screeded concrete slabs before flooring and after a certain time of redistribution. Moisture redistribution is clearl

Internet traffic from a fibre based residential access network is investigated concerning traffic volumes and link load. Also the cost of the services is analyzed. We show that 1 Mbps accesses subscribers maintain high loads, and that the price they pay per GB used is five times higher than the one paid by 100 Mbps access subscribers.

In a so-called globalized world characterized by the continuous movement of people and pathogens crossing national borders, the Nordic welfare states can, arguably, no longer be studied as isolated entities removed from their broader international and geopolitical context. For example, as was aptly illustrated by the 2009 swine flu outbreak, infectious diseases spread at a pace unmatched by previo

There is a gap between software testing research and practice. One reason is the discrepancy between how testing research is reported and how testing challenges are perceived in industry. We propose the SERP-test taxonomy to structure information on testing interventions and practical testing challenges from a common perspective and thus bridge the communication gap. To develop the taxonomy we fol