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This study aims to analyse the nature of the dynamical exchange correlation field in the Hubbard-Holstein model. The goal being to find the dependence of such a field on the model parameters much like in analogy with Density Functional Theory. In order to do so, we begin by studying the analytical solutions of simple systems, such as the Hubbard dimer and small Holstein systems. This will then be
As children, many of us imagined our toys coming to life the moment we looked away, just like in Toy Story. Maybe they walked across the room and secretly planned adventures behind our backs. Surprisingly, physicists ask a very similar question about quantum particles: do they have definite properties before we measure them, or is reality decided at the moment of observation? Understanding the ans
In the current day, some medical instruments rely on older authentication methods for staff and service workers which are outdated and pose a security risk. This project aims to increase security measures to protect sensitive data as well as impose stronger authentication protocols. To create the architecture necessary, an analysis is made. The analysis covers potential threats to the system as we
Datorbaserad design av proteinbehållare för framtida läkemedelstransport Tänk om läkemedel kunde packas i små proteinbehållare och släppas ut först där de behövs i kroppen! I detta projekt anpassades en datorbaserad metod för att designa sådana behållare av två olika proteinkedjor. Metoden gav sex lovande kandidater, men den viktigaste lärdomen var kanske en annan: i en lång designprocess kan tidProtein containers are hollow protein assemblies with potential applications in drug delivery, nanoreactors, biosensors, and nanoparticle synthesis. Two-component containers are especially interesting because the components can be produced separately and assembled under controlled conditions. However, they are difficult to design, since both the overall container geometry and the interactions betw
Ice accretion on overhead contact lines poses a significant challenge in the dimensioning of the railway system. The accreted ice will impose an additional vertical load from its self-weight and affect the wind loads by changing the wires cross-sectional area and shape. The current dimensioning methods, used by Trafikverket, often rely on simplified approximations and constant values when calculat
Denna studie undersöker unga svenska kvinnors syn på romantiska relationer i förhållande till självständighet och risk. Studien syftar även till att undersöka hur unga kvinnor konstruerar livet som ett projekt. Semistrukturerade intervjuer genomfördes med nio unga kvinnor. Kvinnornas berättelser förstås utifrån Beck, Beck-Gernsheim och Giddens individualiseringsteorier samt West och Zimmermans teoThis study examines young women's views on romantic relationships in relation to independence and risk assessment. The study also aims to investigate how young women construct their lives as a project. Semi-structured interviews were conducted with nine young women. Their narratives are analysed through Beck, Beck-Gernsheim, and Giddens' theories of individualization, as well as West and Z
Syfte: Magisteruppsatsens syfte var att genom metoden Phonological Orthographic Morphological Analysis of Spelling (POMAS) deskriptivt analysera vilka typer av fonologiska, ortografiska och morfologiska stavfel som barn med typisk läsutveckling i årskurs 2 och 3 gör. Genom metoden undersöktes även skillnader i frekvens av dessa typer av stavfel mellan årskurs 2 och 3. Metod: Studien omfattade 71 dPurpose: The aim of this master’s thesis was to use the Phonological Orthographic Morphological Analysis of Spelling (POMAS) method to conduct a descriptive analysis of the types of phonological, orthographic, and morphological spelling errors made by children with typical reading development in grades 2 and 3. Furthermore, the thesis aimed to investigate differences in the frequency of these type
It has been identified that the transition from care to adulthood is a particularly vulnerable and difficult phase for young adults with experiences of placement in residential care or foster care. While previous research has shown increased risks of instability, mental health problems and lack of long-term support after leaving care, there has been less focus on narratives from young adults about
Bakgrund: Ökad skärmtid kan påverka tid för aktiviteter som skola, fysisk aktivitet och sömn samt ge negativa effekter kring delaktighet och välbefinnande. Aktivitetsbalans genom livet är en förutsättning för hälsa och välbefinnande. Ungdomar toppar listan med daglig användning av sociala medier samtidigt som psykisk ohälsa är ett växande problem. Syfte: Att undersöka självskattad aktivitetsbalansBackground: Increased screen time may cause consequences for activities such as school, physical activities and sleep, and negatively impact participation and well-being, while occupational balance is a presumption for health. Youths have the highest social media use, as mental health problems are increasing. Aim: To investigate self-assessed occupational balance and social media use among high sc
Studien analyserar den kommunikationsprocess som historiebruk inbegriper genom att identifiera de historiekulturella komponenter som operationaliseras i och runt strategispelet Crusader Kings III (CK3). Uppsatsen adresserar en identifierad forskningslucka genom att undersöka spelutvecklarnas specifika intentioner i relation till spelarnas agens och faktiska historieskapande. Undersökningen vilar p
Corporate sustainability reporting has become a central instrument in the European Union’s (EU) attempt to improve market transparency and support the objectives of the European Green Deal. The Corporate Sustainability Reporting Directive (CSRD) expanded the scope and content of sustainability reporting and introduced detailed European Sustainability Reporting Standards (ESRS). The CSRD raises que
This study aims to examine how professionals within civil society and the legal sector engage in preventive work against human trafficking in Thailand, and how various risk factors and power structures are understood and constructed in their narratives. This thesis presents a discourse analysis of human trafficking in Thailand, with a particular focus on gender, economic vulnerability, tourism, an
This study aimed to examine how professionals within the probation services in Sweden work with recidivism prevention, and their personal descriptions of the important components within the work. The study also aimed to determine if there are any differences in the recidivism prevention about the client's gender. The approach has been carried out through a qualitative study. The qualitative st
This project involved the testing and establishment of a base combustion procedure for the newly acquired Raddec Gen IV PYROLYSER and focused on the optimization and correction of the laboratory’s previous liquid scintillation counting (LSC) procedure using the Hidex 300 SL. The pyrolyser was verified to be operational and achieve satisfactory and consistent recoveries across the 6 combustion tub
Accurate time synchronization is a fundamental requirement for industrial systems, particularly applications relying on deterministic communication and coordinated control. While the Precision Time Protocol (PTP), or IEEE 1588, can achieve a sub-microsecond accuracy in wired local networks, its performance over wireless networks such as Fifth Generation Mobile Network (5G) remains challenging due
Införandet av kvartär rening i svenska avloppsreningsverk är en följd av det reviderade europeiska avloppsdirektivet och syftar till att minska utsläppen av organiska mikroföroreningar till recipienter. Dimensioneringen av kvartär rening påverkas i hög grad av inkommande flöden, vilka varierar både över tid och mellan olika reningsverk. Särskilt betydelsefullt är valet av dimensionerande flöde sam
Dagvatten kan transportera föroreningar till recipienter, vilka kan vara skadliga för både djur, natur och människor. Dessa föroreningar inkluderar bland annat metaller och näringsämnen. En betydande källa till tungmetaller är vägtrafikrelaterad, då bland annat slitage från bromsar och däck samt galvaniserade metallstrukturer ger upphov till föroreningar. Föroreningar med fraktioner som är min
The observed matter-antimatter asymmetry in the Universe suggests the existence of baryon number violating processes beyond what is present in the Standard Model of Particle Physics. The HIBEAM programme is a proposed experiment at the European Spallation Source (ESS) that investigates baryon-number violation through neutron-antineutron oscillations. Of specific interest to this work is the proces
Bilar som körs på fossila bränslen, som bensin, ses ofta vara problematiska för miljön. I huvudsak anses utsläppen av koldioxid vara en av bovarna bakom klimatförändringen, men vad många inte ser är att mycket värre gaser hade släppts ut som det inte varit för katalysatorer. På grund av de höga temperaturerna under förbränningen bildas giftiga gaser som kolmonoxid och kväveoxider. Även olika kolväEthylene oxidation over Pd nanoparticles in an ambient pressure environment was studied. While modulating the temperature in an ethylene-oxygen mixture, operando ambient pressure X-ray photoelectron spectroscopy revealed an oscillating thickness of a PdC_x layer surrounding the nanoparticles while producing CO and CO_2. Scanning electron microscopy before and after the measurement revealed the for
