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Whether migrating birds compensate fur wind drift or not has been discussed frequently during the last decades. Observed behaviours seem to differ between species and situations. Even though complete compensation allows a bird to fly the shortest distance during its migration, this is not necessarily the optimal solution in all cases. There are certain situations when drifting with the wind, and t
This Licentiate thesis aims to gain understanding related to the fluid behavior in porous media existent in fuel cells (FCs) at microscale. In order to achieve this; the widely used methodology for solving problems in porous media has been applied, the Lattice Boltzmann Method (LBM). LBM presents several advantages to solve problems where the microstructural architecture is complex. The introduc
OBJECTIVE. The goal was to examine whether being a victim of bullying was associated with medicine use, taking into account the increased prevalence of physical and psychological symptoms. METHODS. The study population included all students in grades 5, 7, and 9 (mean ages: 11.6, 13.6, and 15.6 years, respectively) in a random sample of schools in Denmark (participation rate: 88.5%; N = 5205). The
Popular Abstract in Swedish Kostnaden för grund- och gymnasieskolan i Sverige motsvarar idag ca 4,5% av BNP. Med tanke på investeringens storlek är det viktigt att dessa resurser används effektivt. I avhandlingen studeras effektivitet inom den kommunala skolan på tre nivåer: Kommunal nivå, skolnivå och individuell nivå. Effektiviteten skattas i linjärprogrammeringsmodeller, genom så kallad Data EnSweden spends altogether about 4.5% of GDP on primary, secondary and upper secondary school. Considering the magnitude of this investment it is important that these resources are used efficiently. In this thesis efficiency in public education is analysed on three different levels: The municipal level, the school level, and the individual level. Efficiency is estimated using a linear programming te
A 2-step 'semi-nested' enterovirus PCR was developed and applied to CSF and serum specimens from 27 consecutive patients with aseptic meningitis. CSF and sera from 8 patients with non-enteroviral diagnoses were included as negative clinical controls. Enterovirus RNA was detected in CSF by PCR in 15 of the patients with aseptic meningitis, compared with 6 by virus culture. Acute-phase sera proved p
This study investigates the toxic effect of E(2)nonenal (trans-2-nonenal, T2N) and its conjugate with horse muscle myoglobin (Mb) tested on murine cell line L929 and human cell line A549, as well as the genotoxic effect of these compounds assayed by measuring of micronuclei in human cells K562. It is an aldehyde, which is occurring as the substance responsible for an off flavour in aged beers, but
This dissertation focuses on the medieval nobility and its manors in the inland of Småland. The problems tackled in the dissertation may be divided into two major complexes. One concerns the emergence and growth of the Småland nobility in a long-term perspective, the second concerns the spatial conditions in which the nobles established their manors in the landscape. An important question concerns
A semiempirical method to characterize the pencil-beam dose kernel is presented. Results from measurements are described by mathematical models of the applicable physical processes. The measurements were made with 6 and 25 MV x-ray beams from a linear accelerator. Broad-beam notations were used consistently, and the pencil-beam quantities were obtained by differentiation. The results were compared
The aim of this thesis was to develop and apply self-registered and observed measures of physical function in people with arthritis in the lower extremity. In Paper I, 181 subjects from the Swedish Knee Arthroplasty Register who were satisfied with their primary knee arthroplasty were studied. 44% of the medical records included reports of pain in the replaced knee at the same time as the patient
Popular Abstract in Swedish Jag har i den här avhandlingen behandlat problemställningar inom tre olika områden inom astronomin. Det som sammanlänkar dessa är att alla innefattar dubbelstjärnor där avståndet mellan stjärnorna är litet, dvs de har en kort period. De är också alla datorsimuleringar. Jag har satt upp en modell för att betrakta de astronomiska systemen och genom numeriska metoder beräkThis thesis introduces and summarizes four papers dealing with computer simulations of astrophysical processes involving binaries. The first part gives the rational and theoretical background to these papers. In paper I and II a statistical approach to studying eclipsing binaries is described. By using population synthesis models for binaries the probabilities for eclipses are calculated for diff
Popular Abstract in Swedish En central frågeställning inom ekologin handlar om hur och varför organismers utbredning och antal varierar i tid och rum. Detta forskningsfält går under namnet populationsdynamik och är ämnet för min avhandling. Populationsdynamik handlar om mönster, slumpmässighet, förändringar; helt enkelt matematik! Av den anledningen är det inte bara önskvärt, utan faktiskt nödvändPopulation dynamics in space and time are manifested as changes in the distribution and abundance of organisms. To couple such patterns to the underlying processes is a central question in ecology and also key to successful management. In this thesis, I use theoretical models as well as time series data to analyze population dynamics in environments that are variable in space or time. An example o
Many people have experienced computers not doing what they were expected to do or, perhaps more often, met with computers that deliver faulty results. Frequently, if not always, such behavior is blamed the lack of a complete requirements specification. hi this assertion, it is tacitly understood that if a specification is correct and comprehensive enough then it is possible to avoid computing erro
The aim of this book is to improve our understanding of creative knowledge environments. The various chapters analyse creative and innovate activities as carried out by individuals, groups and organisations. The book’s focus is on identifying and understanding the factors relating to the working environment that are conducive to human creativity and innovation. The editing of the book has been a c
The number of electrically driven loads in a modern vehicle is constantly increasing. Many loads that former were mechanically driven will in the future be driven by electricity. This implies that a number of electronic systems have to be packed together in the limited space in a vehicle. When different electronic systems are placed close to each other, there is always a risk for electromagnetic i
Popular Abstract in Swedish Allt eftersom fler och fler organismers totala uppsättning gener, genomet, sekvenseras ökar fokus på att kartlägga de genprodukter, proteiner, som uttrycks. Att kunna studera de proteiner som uttrycks mer eller mindre vid olika tidpunkter eller cellulära tillstånd utgör en viktig del i sökandet efter kunskap om biologiska och medicinska processer. Studier av den totala The study of the protein complement of a genome is called proteomics. Proteomics can be defined as identification, quantification and characterization of a total set of proteins expressed at different time-points or under different cellular states to provide global information about biological processes. The study of membrane proteins is a challenging area in the development of proteomic research.
This report presents a project at Lund University Libraries (LUB) during the fall of 2012, with the object to identify areas where the present research support services ought to be developed and strengthened. The project is three folded and contains a) a literature review focusing on definitions and examples of research support services as well as researchers’ needs and experiences of support serv
Popular Abstract in Swedish Olika rapporter har fastslagit att de traditionella svenska folkrörelserna (såsom arbetarrörelsen och frikyrkorörelsen) tappar medlemmar. Istället för att ansluta sig till ett politiskt parti eller en kyrka söker sig politiskt eller religiöst intresserade individer till nya, individualiserade, former av engagemang. Denna avhandling studerar en grupp män och kvinnor somVarious reports have stated that the traditional Swedish popular movements (e.g. the Workers movement and the Free church movement) are loosing ground. Instead of joining a political party or a church, politically or religiously active individuals are said to seek out new and individualized ways of being involved. This thesis studies a number of men and women that persist in being communally invo
Popular Abstract in Swedish Sedan 1980 finns det inte längre några formella restriktioner vad gäller i vilken typ av befattningar, positioner eller förband som kvinnor kan jobba som yrkesofficerare i den svenska Försvarsmakten (FM). I denna avhandling studeras närmare hur långt integreringen av kvinnor i den svenska FM har kommit, hur kvinnliga officerares situation ser ut idag, och vad deras närvSince 1980, there are no formal restrictions for women to serve as officers wherever and in what positions they want to in the Swedish Armed Forces (SAF). In this thesis, the author examines what has been achieved so far in terms of integration of women, what the situation of female officers is looking like today, and what impact their presence has had on the military organisation. The empirical
