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Simulations of domains with large differences in length scales across different directions are often computationally expensive because they require high mesh resolution, leading to long simulation times. This master’s thesis was done in collaboration with FS Dynamics Sweden AB and addressed the high computational cost associated with fully resolved 3D simulations. Inspired by semiconductor and ele
The aim of this project is to establish a workflow that transforms CT-scanned images of paperboard into a calibrated Representative Volume Element (RVE). A RVE is defined as the smallest volume that accurately captures the macroscopic behaviour of the material. First, CT-scanned images are converted into a finite element model that rep- resents the microstructure of the paperboard. Secondly, a di
Bioacoustic sound event detection (SED) is a critical field for biodiversity monitoring, yet the high cost of annotating data poses significant challenges. This thesis explores the application of active learning strategies to reduce the amount of annotated data required for effective model training. This is done for a segment based SED model, where batch active learning is performed by querying fu
The need for speed in communications systems is increasingly prevalent in modern society, which is one of the driving factors for the evolution of new technologies. At the forefront of this evolution are Multiple-input Multiple-output (MIMO) systems. Through the usage of many antennas at the base station (BS) and user equipment (UE), significantly enhances the potential maximum data transfer rates
Flooding in oil palm plantations in Southeast Asia is a common problem. The oil palm’s habitable range is restricted to lowland equatorial areas, and the high rainfall and degraded landscapes associated with oil palm cultivation leaves oil palm prone to flooding. Flooding diminishes yields in mature palms, increases mortality in young palms, and disrupts operational processes. This reduces the ec
On the 19 of October 2004 two people in Linköping, Sweden were murdered. Police secured DNA from the perpetrator, however it could not further the investigation since the DNA was not in the police registry. The case remained cold until 2020 when a new method of ancestral DNA was used, referred to as IGG. The method was previously tested in the USA and solved plenty of cold cases. The double homici
Söndagen den 11:e september 2022 var det återigen dags för riksdagsval i Sverige. Valresultatet som presenterades ett par dagar senare avslöjade att den socialdemokratiska regeringen skulle få avgå efter en period om åtta år, och Sverige skulle komma att få en ny regering. Regeringsskiftet skedde den 18:e oktober 2022, och består idag av en trepartiregering: Moderaterna, Kristdemokraterna och LibParliamentary elections were once again held in Sweden on Sunday the 11th of September 2022. The election results were presented a few days later and revealed that the Social Democratic government would have to resign after a period of eight years, meaning that Sweden soon would become to have a new government. The change of government took place on the 18th of October 2022, and consists today of
In October 2022, the European Commission announced a legislative proposal to make instant payments in euro available to all citizens with a bank account in the EU and EEA countries. When adopting new payment technologies, it can be challenging to balance security and convenience. Consideration must be given to whether compromised security is an unavoidable effect of instant payments or if both obj
This study investigates the working life of people with immigrant backgrounds who work as language supporters to help the integration of refugees in a municipality in Sweden. Five language supporters were interviewed about their working experience in the municipality. Applying Joan Acker’s concept of inequality regime and Anders Neergaards’s concept of included subordination, the results of the st
Glacier lake outburst floods (GLOFs) are an increasingly documented threat across the Himalayan region, wherein Nepal is situated. GLOFs involve a rapid discharge of water from a lake situated at the side, front, within, beneath, or on the surface of a glacier. Forecasting the impacts associated with such events could facilitate the development of proactive risk management approaches. Impact-based
Syftet med den här uppsatsen är att undersöka huruvida verksamma inom gymnasieskolan upplever sig förberedda inför att ta sig an undervisningen i det nya kunskapsområdet Sexualitet, samtycke och relationer (SSR), som är en del av rådande läroplan sedan höstterminen 2022. Med hjälp av policy enactment theory analyserar vi tematiskt kodade kvalitativa intervjuer med lärare och biträdande rektorer oc
I denna studie testades och utvärderades fyra membran mot varandra för användning i högtemperaturprotonutbytesmembranbränslecell (HT-PEMFC) applikationer. En fosforsyra (PA)-dopat polybensimidazol (PBI)-membran användes som en referens som den nuvarande state-of-the-art. Laddningsbäraren i detta membran är PA, och det finns fördelar med att byta från PA till jonisk vätska (IL) som laddningsbärare In this study four membranes were tested and evaluated against each other for use in high-temperature proton exchange membrane fuel cell (HT-PEMFC) applications. A phosphoric acid (PA) doped polybenzimidazole (PBI) membrane, was used as a reference as the current state-of-the-art. The charge carrier in this membrane is the PA, and there are advantages in switching from PA to ionic liquid (IL) as t
Vegetation indices derived from remotely sensed optical data are commonly used for crop monitoring in precision agriculture, but their information capability can be hindered by the presence of clouds. Consequently, areas with frequent cloud cover like the southwest of Sweden may have limited access to usable optical data. Nonetheless, the addition of synthetic aperture radar (SAR) data can provide
The aim of this study is to investigate how newspaper articles from the Swedish newspaper Expressen have presented cannabis in the years 1992 and 2022. The objective was to compare the coverage between these years. After applying selection criteria and random selection, 70 articles were chosen for analysis. The method on which this work is based is qualitative text analysis. The content from the a
The negative impacts of surface ozone (O(3)) on vegetation are determined by external exposure, leaf gas exchange and plant antioxidant defence capacity, all dependent on climate and CO(2) concentrations. In this study the influence of climate change on simulated stomatal O(3) uptake of a generic crop and a generic deciduous tree at ten European sites was investigated, using the LRTAP Mapping Manu
OBJECTIVE-To report the incidence of sight-threatening vascular lesions in type 2 diabetic subjects without retinopathy after adopting a 3-year interval screening program. RESEARCH DESIGN AND METHODS-In all, 1,691 type 2 diabetic subjects with no detectable retinopathy in two 50 degrees red-free fundus photographs were scheduled for follow-up with photography 3 years later. Age at diabetes diagnos
ObjectiveTo evaluate two algorithms for prediction of preeclampsia in a population of nulliparous women in Norway. DesignProspective screening study. SettingNational Centre for Fetal Medicine in Trondheim, Norway. PopulationFive hundred and forty-one nulliparous women. MethodsThe women were examined between 11(+0) and 13(+6)weeks with interviews for maternal characteristics and measurements of mea
To investigate if the Swedish entry rules for pets to prevent the introduction of Echinococcus multilocularis (EM) are proportional (i.e. that their costs do not exceed the value of their benefits), a dichotomous-choice contingent valuation study was conducted. The study was performed before the first case of EM was detected in Sweden in February 2011. About 5000, randomly selected, Swedish citize
The two-photon ionization of helium atoms by ultrashort extreme-ultraviolet free-electron laser pulses, produced by the SPring-8 Compact SASE Source test accelerator, was investigated at photon energies of 20.3, 21.3, 23.0 and 24.3 eV. The angular distribution of photoelectrons generated by two-photon ionization is obtained using a velocity map imaging spectrometer. The phase-shift differences and
