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Bunch compressors in linear accelerators (linac) are magnetic devices used to shorten electron bunch length, and therefore, increase the peak current. MAX IV, located in Lund, Sweden, is a synchrotron light source facility that includes a linac containing two double-achromat bunch compressors, BC1 and BC2. Each bunch compressor consists of two identical arcs bent in opposite directions. As electro

I Fågelmara, ett kustnära område i Karlskrona kommun, innehåller grundvattnet i flera brunnar höga halter av klorid, vilket kan vara ett tecken på att saltvatten från Östersjön tränger in. Detta fenomen, kallat saltvatteninträngning, riskerar att förvärras i framtiden på grund av klimatförändringar, torrare år och sjunkande grundvattennivåer. Denna studie har undersökt kloridhalterna i åtta kommunSaltwater intrusion into coastal groundwater is an increasing concern due to climate change, as drought and declining groundwater levels can allow seawater to infiltrate groundwater aquifers. This study investigates chloride concentrations in eight municipal wells in Fågelmara, Karlskrona, from 2003 to 2025, and groundwater levels in wells nearby from 2019 to 2025, to assess signs of saltwater int

This study aimed to investigate and analyze prominent narratives within twelve YouTube videos published by a Swedish organization I have deidentified. It also investigated how social workers within child protective services in Sweden appear within the empirical material. The study leaned towards the following theories: The social constructivist theory and narrative theory, with terms created by Gé

This study aims to examine and compare attitudes towards drug-related problems, professional work with individuals experiencing such problems, and harm reduction interventions among professionals in social services and adult psychiatry in Malmö. The study is based on a quantitative cross-sectional design, with 150 respondents completing a digital survey that included three established instruments:

Partikelfysik är det fält inom fysiken som syftar till att förstå universums mest fundamentala byggstenar och de krafter som styr deras beteende. Standardmodellen är den teori som med stor framgång beskriver alla kända elementarpartiklar och deras växelverkningar, med undantag för gravitationen. Upptäckten av Higgspartikeln vid LHC 2012 markerade en viktig milstolpe för den moderna fysiken. Den beIn this thesis, a comprehensive on-shell renormalization scheme for the potential of the general CP-violating Two-Higgs-Doublet Model (2HDM) at one-loop level is presented. We derive and implement two schemes that are self-consistent and do not rely on a set of consistency equations to be valid. We focus on showcasing the effects of different renormalization schemes and their implications on physi

This study aimed to analyze women’s entry into organized crime and factors that complicate exiting these groups. This study is based on a qualitative approach and has been conducted using document analysis. Thematic analysis has been used to analyze eight transcribed podcast episodes where women share their experiences of being a part of organized crime groups in Sweden. To implement this study, w

Digitalisering av arbete omvandlar arbetslivet i stora delar av världen. Trots detta har få studier undersökt medarbetare inom HR-professionens uppfattning av sin yrkesroll och motivation i arbetet i förhållande till dessa förändringar. Syftet med studien var att undersöka HR-anställdas erfarenheter av och förväntningar på arbete med data-drivet beslutsfattande, och hur deras attityder och förhållDigitalization of work changes work life in large parts of the world. Despite this, few studies have examined employees within the HR-profession’s perception of their professional role, and motivation in their work in regards to these changes. The aim of the study was to examine HR-employees experiences of, and expectations on work with data-driven decision making, and how their attitudes relate t

Women in the humanities : scientific ideals during the second half of the 20th century This thesis examines scientific ideals of female humanists during the second half of the 20th century through the analytical concept scientific or scholarly persona. The aim with this thesis is to show how scientific ideals have been negotiated in the context of obituaries of female scholars active in the humani

Problem background and research problem: Previous research has shown that demographic characteristics of corporate executives can influence financial decision-making. According to Upper Echelons Theory, factors such as gender, age and experience play a role in shaping strategic decisions. However, research on the role of CFOs remains limited, especially within capital-intensive industries like the

Compressed air systems account for roughly 10 % of industrial electricity use, suggesting that even marginal gains in compressor efficiency yield substantial cost and emission savings. Although screw compressors are valued for their compact and reliable design, the process of optimizing the performance of a machine for a specific application is typically time-consuming due to manual testing under

Bathymetry, the measurement of underwater terrain, is crucial for understanding lake storage volumes, water resource availability, and ecological conditions. While there are an estimated 117 million lakes worldwide, bathymetric data remains limited for most of them. Traditional methods for measuring bathymetry requires fieldwork which is costly and time-consuming. For this reason, new less fieldwo

Syftet med denna studie var att belysa och utforska psykologers upplevelser av tidsbegränsad terapi. Tidsbegränsad terapi definieras på så vis att antalet sessioner är begränsade före uppstart av psykologisk behandling. Det övergripande syftet med studien är att belysa olika perspektiv av hur tidsbegränsad terapi påverkar psykologen i sitt arbete och behandling. Fem verksamma psykologer med olika The aim of this study was to explore how psychologists perceive time limited therapy. Time limited therapy is defined as restricting the number of sessions before the beginning of therapeutic treatment. The overall purpose of the study is to shed light on different perspectives in terms of how time limited therapy affects the therapist in their work and the treatment. Five psychologists with diffe

This thesis investigates how low-frequency ultrasound can enhance membrane filtration performance and reduce fouling, one of the most critical limitations of membranes in water treatment technologies. Two types of membranes were studied. Flat-sheet polyethersulfone (PES) membranes, widely used for their mechanical and chemical stability, and electrospun nanofiber membranes (ENMs) made from styrene

Realistic virtual environments offer valuable applications in rehabilitation, especially for individuals with limited mobility. However, most existing virtual reality (VR)-based rehabilitation platforms rely on procedurally generated or low-detail natural scenes, often lacking ecological and spatial authenticity. This study proposes a complete and cost-effective workflow that combines unmanned aer

Moral är ett svårdefinierat begrepp, och även ett begrepp som inte förekommer i Lunds universitets programbeskrivning för kandidatprogrammet i sociologi, trots att det ofta är tätt sammanflätat med de frågor som lyfts i programmet. Kravet på värdeneutralitet inom sociologisk forskning växer med tiden, trots att många sociologer uppmärksammar svårigheten i att fullkomligt utesluta moral och värderi

This study compares analytical and numerical models for groundwater modelling. The focus of comparison is to investigate the change of the analytical results when there is only a partial penetration of the aquifer. Two methods of comparison are used, the first one consisting of calculating a radial distance from a shaft to the point where the drawdown is 0.3 meters with both models. The second metCan pen and paper groundwater models compete with computer programs? Could something as simple as a pen and paper equation on the back of an envelope compete with advanced and expensive computer programs? Surprisingly, the answer could be yes for sandy soils. When modelling how a construction project will affect the groundwater surface, it’s easy to assume that the more advanced the model is, the

This thesis evaluates the feasibility of arbitrage free autoencoder models for forward curve simulation using European bond data. In the model, an autoencoder is used to learn a low dimensional factor representation of forward curves. The risk neutral evolution of forward curves can be calculated by introducing a stochastic process in this low dimensional latent space. A correction factor is added

This study explores how school counsellors and treatment practitioners perceive and address violence in young people's intimate relationships. Using a qualitative approach, six semistructured interviews were conducted, three with school counsellors working at upper secondary schools and three with practitioners from various treatment settings. The analysis was guided by the normalisation proce

Sverige genomgår för tillfället strukturella förändringar i befolkningssammansättningen. Andelen äldre blir större och andelen yngre blir tvärtemot mindre. Denna demografiska utveckling får stora följder för samhället, inte minst för bostadsmarknaden. Människor i olika åldrar har olika boendepreferenser och när fördelningen i samhället förändras, förändras också behovet av olika typer av bostäder.Sweden is facing significant demographic changes, with declining birth rates and an ageing population that is not only growing older but also growing in number. These shifts affect many areas of society, particularly the housing market. Since people of different ages have different housing preferences, the demand for various types of housing is also changing. Against this background, this study ex