Filtyp
Prototypes of wind turbines of the megawatt class are to be built and tested starting from 2008 at the German offshore wind energy test site in the North Sea. To ensure a high operational reliability of future generations of offshore wind conversion systems (OWEC) with economically acceptable repair and maintenance efforts, comprehensive diagnosis and supervision concepts are required. Automatic m
Comparing 3D neutron and X-ray microtomography (NCT and XCT) results of fully pyrolyzed and pristine samples, we observed that the contrast in the neutron images increased for the carbonized samples, suggesting that H would be concentrated at the surface of the carbonized material structure.
Beam-driven plasma-wakefield acceleration is an acceleration scheme promising accelerating fields of at least two to three orders of magnitude higher than in conventional radiofrequency accelerating structures. The scheme relies on using a charged particle bunch (driver) to drive a non-linear plasma wake, into which a second bunch (witness) can be injected at an appropriate distance behind the fir
This paper presents a novel polynomial constraint for homographies compatible with the general planar motion model. In this setting, compatible homographies have five degrees of freedom-instead of the general case of eight degrees of freedom-and, as a consequence, a minimal solver requires 2.5 point correspondences. The existing minimal solver, however, is computationally expensive, and we propose
Quality of supply regulations are today in use in a large number of countries. While these regu-lations are likely to decrease the direct economical consequences from power outages it is less clear to what extent they take into account the societal criticality of consumers. In order to advance knowledge in this area, two different ways of estimating consequences of power outages are here contraste
Population, Demography and Nighttime Lights CFE Working Papers series No. 53 CFE Working Papers are available at the website of the Centre for European Studies www.cfe.lu.se Population, Demography and Nighttime Lights An examination of the effects of population decline on settlement patterns in Europe Maria Francisca Archila Bustos http://www.cfe.lu.se/ 2 Maria Francisca Archila Bustos holds a M.
https://www.cfe.lu.se/en/sites/cfe.lu.se.en/files/2020-12/cfewp53.pdf - 2025-12-21
GABA (gamma-aminobutyric acid), the main inhibitory neurotransmitter in the central nervous system is also present in the pancreatic islet beta cells where it may function as a paracrine molecule and perhaps as an immunomodulator of lymphocytes infiltrating the pancreatic islet. We examined CD4(+) and CD8(+) T cells from diabetes prone (DRlyp/lyp) or resistant (DR+/+) congenic biobreeding (BB) rat
Detta arbete är en undersökning av regelverket för solcellsanläggningar på brukningsvärd jordbruksmark och hur detta regelverk tolkas i praktiken. Brukningsvärd jordbruksmark är en nationellt skyddsvärd resurs som erhåller ett särskilt skydd i miljöbalken genom en hushållningsbestämmelse i 3 kap. 4 § miljöbalken. Detta eftersom en långsiktigt säkerställd livsmedelsproduktion utgör ett väsentligt sThis thesis is an investigation of the regulatory framework for photovoltaic installations on arable farmland and how this framework is interpreted in practice. Usable agricultural land is a resource worthy of national protection and receives special protection through a management provision in the Swedish Environmental Code. This is because long-term food production is considered an essential soc
This paper describes the involvement of end users in a project aimed to create a navigation aid for older persons who have memory decline, which affects navigation skills, and thus their independence. Interviews, focus groups with “stick man scenarios” and shorter usability tests seemed to work well. An extended test where the users themselves were expected to use the system independently was not
BACKGROUND: Non-fatal outcomes of disease and injury increasingly detract from the ability of the world's population to live in full health, a trend largely attributable to an epidemiological transition in many countries from causes affecting children, to non-communicable diseases (NCDs) more common in adults. For the Global Burden of Diseases, Injuries, and Risk Factors Study 2015 (GBD 2015), we
Objective: Preoperative pain and function is viewed as an important predictor of total knee arthroplasty (TKA) outcomes. We examined whether variations in pain and function outcomes existed at 12 months between two centres in Sweden and Australia, and whether this was explained by variations in patient presentation for TKA. Methods: This was a retrospective analysis of prospectively collected data
The scope of this presentation is a new methodology to correct conventional NIR data for scattering effects. The technique aims at measuring the absorption coefficient of the samples rather than the total attenuation, measured by conventional NIR spectroscopy. The main advantage of this is that the absorption coefficient is independent of the path length of the light inside the sample, and therefo
Even though multisensory environments (MSE) incorporate artifacts and technology to provide sensory stimuli, most of these artifacts are non-interactive. Twenty-four children with profound developmental disabilities from three MSE institutions have been involved in a research study. A handful of interactive design artifacts, which have been developed as a tool for ideation and to enhance the use o
We extend a thermodynamically consistent finite strain micro-sphere framework elaborated by Carol et al. towards the modelling of phase-transformations to allow for the simulation of polycrystalline solids such as, e.g., shape memory alloys and shape memory polymers undergoing large deformations. The considered phase-transformation mechanism is based on statistical physics and allows the considera
We analyze the convergence rate of the Dirichlet-Neumann iteration for the fully discretized unsteady transmission problem. Specifically, we consider the coupling of two linear heat equations on two identical non overlapping domains with jumps in the material coefficients across these. In this context, we derive the iteration matrix of the coupled problem. In the 1D case, the spectral radius of th
The higher efficiency and higher availability (fault-tolerant oriented) of RF & Cavity system (with beam loading) to operate at, the more dynamic details needs to be identified, so as to have the abilities (a) to work at nonlinearities, (b) to work close to limitation, and (c) to change operation point quickly and correctly. Dynamic detail identifications rely heavily on high precision measuri
Bridges are an important part of the traffic infrastructure, which are subjected to high safety requirements and economic consequences in case of functionality failure. Therefore, it is needed to consider potentially substantial direct and indirect risks during service life, i.e., the need for risk and robustness analyses. Over the last decades, various quantitative performance criteria have been
