In a world where distributed power generation and deregulation of energy markets are on everyone's agenda, the need for highly efficient power plants with short lead times is greater than ever. Although at present combined cycles provide a solution, development of ever more advanced machines to increase efficiency and lower the environmental impact has led to high maintenance costs and a decrease

Psykiatrins historia har studerats på flera olika sätt, men det är sällan de drabbade själva får komma till tals och bli tagna på allvar. Lars-Eric Jönsson undersöker här personliga erfarenheter från den psykiatriska vården. Han beskriver och analyserar självbiografiska och/eller skönlitterära skildringar av psykiatrin, från tidigt 1800-talet fram till idag. Vad händer när patienten, som i de fles

Homogeneous Charge Compression Ignition (HCCI) is a promising but challenging combustion engine concept. The potential for good fuel economy and low emissions is high but the transient performance required for automotive applications presents a few problems still to be solved. The focus of this work is identification of the process dynamics. An ARX type model is fitted to input-output data. A meth

We report the results of two newspaper reading experiments. We examine how readersÕ eye movements are affected by graphical elements such as photos and information graphics. Control variables in these experiments include size and content of photos, and spatial structure of information graphics. We hypothesized that large photo size and animate photo content would be associated with a local increas

Modulation of the gut microbiota with prebiotic oligosaccharides from partially hydrolyzed xylans can be part of the solution for reducing the occurrence of many health problems such as diabetes, cardiovascular disease and cancer. Prebiotics are carbohydrates that selectively stimulate health beneficial bacteria in the colon, restoring homeostasis to the gut environment. Xylans are hemicelluloses

Andra världskriget har längre setts som den gränssättande händelsen i den moderna historien. Men kanske var andra världskriget bara första världskrigets sista slag. Det är första världskriget som är vår historiska urkatastrof, som under hundra år skapat nya konflikter, krig och folkmord, men också mer fredliga utvecklingar. De stora öppna såren i vår värld, på Balkan och Nordirland, i Mellanöstern

Abstract in Undetermined This paper describes a way to modify the K-Best Sphere Detector, using the knowledge that the real and the imaginary part of complex number are always orthogonal. To ensure that this property is used, a modification to the Real Value Decomposition is proposed that will ensure that the orthogonality is seen also after the decomposition. The proposed method allows for equall

The two major breast cancer susceptibility genes, BRCA1 and BRCA2, account for the majority of familial breast–ovarian cancer, but only a modest proportion of breast cancer families without ovarian or male breast cancer. Search for additional breast cancer genes with traditional linkage analysis has so far been unsuccessful, probably due to genetic heterogeneity. Pooling of families of different e

Thoughts and Perspectives - yes, a final summing-up - well... Prof. Hans Andersson's last lecture before his retirement, given on the 31th of October 2001.

A three-terminal ballistic junction (TBJ) is a device in which three quantum point contacts are coupled via a ballistic region. Previous studies have shown that the TBJs exhibit a novel electrical property which has potential applications in nanoelectronics. Here, based on our recent theoretical and experimental investigations, we will demonstrate that various nanoelectronic devices can be fabrica

Popular Abstract in Swedish Magnetkameran är ett diagnostiskt instrument med vilket man kan ta skiktbilder av kroppen. Den började användas i sjukvården för drygt 20 år sedan och baseras på ett fysikaliskt fenomen som kallas för kärnmagnetisk resonans (MR). Detta innebär att vissa atomkärnor som placeras i ett starkt magnetfält kan avge en radiosignal när de utsätts för korta radiopulser. RadiosigContrast-enhanced magnetic resonance angiography (CE-MRA) is a diagnostic method for imaging of vascular structures based on nuclear magnetic resonance. Vascular enhancement is achieved by injection of a contrast medium (CM). Studies were performed using two different types of CM: conventional paramagnetic CM, and a new type of CM based on hyperpolarized (HP) nuclei. The effects of varying CM con

An interesting class of intelligent tutoring systems are systems that are able to detect and recognize affective responses and states in students, and use such data to adapt its feedback, guidance and instruction. The article presents affective responses and states considered relevant for learning, and methods that have been proposed or used to detect such responses and states. We focus on the aff

Popular Abstract in Swedish Det finns en föreställning att kvinnor tills nyligen varit åsidosatta inom historieforskningen, något som hävdats bland annat inom kvinno- och genderteoretisk forskning. Mot bakgrund av en genomgång av svenska avhandlingar i historia argumenterar jag för att utvecklingen måste ses i ljuset av historieforskningens utveckling. Det finns en relation mellan vilka fenomen foI am studying the portrayal of women in Swedish dissertations of history from 1890 to 1995. Inspired by Pierre Bourdieu I interpret the production of knowledge as an effect of the rivalry between researchers concerning the dominate positions within the field of history. One strategy in order to reach these positions is to focus on phenomena that previous research has not paid attention to. To show

Popular Abstract in Swedish Olika toleransmekanismer kontrollerar immunsystemets aktivitetThe immune system has evolved regulatory mechanisms in order to balance the effects of deleterious immune responses. Such immunological tolerance may be specifically acquired by lymphocytes, although different cells of the immune system participate in the induction and maintenance of tolerance. This thesis work is based on investigations of different tolerance mechanisms induced in CD4+ T lymphocy