Sökresultat

Partikelfysikens Standardmodell är den bästa teoretiska beskrivningen vi har av de allra minsta byggstenarna som utgör vårt Universum och hur de interagerar med varandra. För att utöka vår förståelse och verifiera våra teoretiska modeller behöver vi utföra experiment. Dessa experiment består av att kollidera partiklar med varandra i nästan ljusets hastighet, vilket görs i partikelacceleratorer somThe chirality-flow formalism has proven to simplify the calculations of helicity amplitudes to the extent that the matrix element corresponding to a Feynman diagram can immediately be written down. It has also shown to speed up the computation of scattering amplitudes through numerical implementations in MadGraph5_aMC@NLO. In this thesis we investigate if automated computation of amplitudes can be

The purpose of this study is to investigate how structural barriers and integration policies affect-skilled African immigrants in the Swedish labor market. A qualitative narrative review of 31 studies-was conducted and analyzed using social capital theory. The first part of the study explores how-current integration policies and programs address the needs of this group. The second part examines-th

Luftföroreningar är ett globalt hälso- och miljöproblem och orsakar att varje år dör 4 miljoner människor i förtid. Även om Sverige har förbättrat luftkvaliteten, uppskattas över 7 tusen varje år dö till följd av föroreningar. De tre vanligaste föroreningarna är partiklar (PM10, PM2.5) och kvävedioxid (NO2). Orsakerna till föroreningar är huvudsakligen vägtrafikens utsläpp, grus på vägar som mals Air pollution is a global problem that causes major impacts on health and the environment. To protect the environment and health, the European Union has been implementing revised poli-cies on air quality. The revised Ambient Air Quality Directive introduces stricter air quality standards. The aim of this study is to identify Swedish municipalities where the new and exist-ing air quality standards

The event generator PYTHIA can be used to simulate the hadronic part of cosmic particle showers in the atmosphere. Until now, the collision between particles and atmospheric nuclei has been modeled in a simplified way by the PythiaCascade add-on, approximating the nuclear effects. However, at present it is possible to include the Angantyr module, which constructed a detailed description of the nuc

Traditionally, radio communication research has focused on improving range and data transmission rates. Over the past decade, there has been a growing demand for small devices that should be able to interact with each other, and to facilitate this growth, low-cost and low-power radios are necessary to ensure devices are able to function for extended periods of time without maintenance. This thesis

This thesis investigates the European Union’s Carbon Border Adjustment Mechanism (CBAM) as a novel intersection between climate regulation and international trade law. It explores the extent to which CBAM serves as a legitimate environmental measure under EU and World Trade Organization (WTO) legal frameworks or whether it risks functioning as a de facto instrument of protectionism. This is partic

A biographical ideology-analysis of Sven Arvid Flory’s diaries, 1932‒1941. This study follows the diaries of the Swedish officer Sven Arvid Flory from 1932 through 1941, analysing the political and personal notes made and relating them to broader frameworks of ideology. First impressions of the material hinted at nazi sympathies. The study then focused on these ideological aspects of the diaries,

This thesis investigates the structural, social, and spatial factors shaping women’s spatial mobility in Gothenburg, Sweden. Employing a quantitative approach grounded in relational spatial theory, the developed method combines quantitative regression analysis with a case study on two neighbourhoods to examine how gender inequalities, domestic responsibilities, labour force participation, and ethn

The growing demand for sustainable and functional plant-based protein sources has positioned yellow pea (Pisum sativum) as a promising candidate in the development of next-generation food products. From a sustainability perspective, yellow pea fermentation represents an environmentally favorable protein source compared to animal derived alternatives. The nitrogen fixing capacity of yellow pea furt

Partiella differentialekvationer används ofta för att modellera fysikaliska fenomen, bland annat allt från klimatmodellering till kvantmekanik. Därför är det oerhört viktigt att utveckla snabba och effektiva metoder för att lösa dessa problem. Ett sätt att snabba upp lösare är att utnyttja parallellism, det vill säga att låta flera processorer/datorer samarbeta med att lösa problemet. För att nyttCurrent trends in hardware design have led to a growing interest in parallel-in-time (PinT) methods for increasing parallelism in numerical solvers for partial differential equations (PDEs). In this thesis, we consider the Multigrid Reduction in Time (MGRIT) algorithm (Falgout et al.) for linear parabolic PDEs. We provide a description of the algorithm, as well as a derivation of the error propaga

Purpose: The purpose of this thesis is to investigate the effects of the announcement and implementation of the EU’s Corporate Sustainability Reporting Directive (CSRD) on ESG scores and individual pillar scores of firms. Furthermore, this thesis investigates the impact of firm ESG scores on firm performance. Methodology: This thesis uses Difference-in-Differences and Regression Discontinuity De

This study investigated the influence of various native and modified starches on the quality and staling behaviour of gluten-free bread. Four starch types: native wheat starch, cross-linked tapioca starch, fractionated native potato starch (FPS), and acetylated potato starch (Amylacetate) were evaluated by incorporating them into a standardized gluten-free bread formulation as the main starch sour

The transition to renewable energy is a critical element in global efforts to combat climate change. This study explores the decarbonization pathway for Peru’s energy sector, emphasizing renewable energy integration in the electricity generation sector. Peru's rich renewable resources—hydropower, wind, solar, geothermal and biomass—highlight its potential as a regional leader in sustainable en

Vi människor har ej nyttjat de naturresurser som vår planet har försett oss med på ett ansvarsfullt sätt. Just nu producerar och konsumerar vi i en takt som vår planet inte klarar av. För att bryta detta mönster krävs en omställning. För produktutvecklare innebär detta ett ansvar att utveckla hållbara produkter. En utmaning som kan lösas genom att designa produkter i miljövänliga material som kan In this thesis, initiated by Axis Communications, the material choice of a folded horn loudspeaker was investigated. The main goal of the project was to determine if it was possible to reduce the costs and environmental impact of the product by means of optimizing the material, while maintaining or improving its performance. The three main parameters which were analyzed were the acoustic performan

Mitt kandidatarbete handlar om att representera den elektromagnetiska fälttensorn med matematiska objekt som kallas spinorer, bland annat genom att undersöka hur de transformeras när man byter referenssystem. Den här texten ska försöka förklara vad något av det där betyder, och sedan varför det är intressant för teoretiska fysiker. Vi börjar med transformationer. I våran vardag är vi vana med attThis thesis presents a way of representing electric and magnetic fields directly as linear combinations of products of components of Weyl spinors, without using a four-potential. First it is shown that when Lorentz transforming the spinors, these fields transform according to the tensor transformation of the electromagnetic fields. Then, by explicitly expressing the spinors in terms of a four-mome

This thesis investigates what drives people to use credit-style Buy Now, Pay Later (BNPL) services, focusing on Klarna users in Sweden. Drawing on behavioral economics, it tests whether having a present-biased time preference (a strong preference for immediate rewards) can predict a person’s use of Klarna’s “Pay Later” and “Installments” features. To explore this, a cross-sectional survey (N =100)

This thesis examines the role of visual media in conveying the Gallic founding myth and constructing national identity in nineteenth-century France. Positioned at the interdisciplinary intersection of nationalism studies and memory research, it investigates how visual representations embed the Gallic founding narrative – despite its association with military defeat – into France’s collective memor

Studien syftar till att kartlägga entreprenörers anbudsprioritering och ge offentliga beställare kunskap om marknaden för att kunna anpassa sina förfrågningsunderlag. Studien har genomförts som en kvalitativ studie innehållande litteraturstudie, dokumentstudie och intervjustudie. Tre administrativa föreskrifter, AF-delar, har analyserats i dokumentstudien. I intervjustudien har både entreprenad-fThe study aims to map contractors’ bid prioritization and provide public clients with knowledge about the market to be able to adjust their tender documents. The study was conducted as a qualitative study including a literature review, document study, and an interview study. Contractual tender documents were analyzed in the document study. In the interview study, both contractors and public procu