Filtyp
This study evaluates an object-based image analysis (OBIA) approach using YOLOv11s-seg instance segmentation model for classifying thermally relevant land cover types from 0.16 m resolution orthophotos across three municipalities in Scania, Sweden. Six thermally relevant classes were defined: asphalt, bright roof, brown roof, dark roof, tree canopy and grass. The model was trained on annotations f
Companies play a central role in international efforts to counteract ongoing biodiversity loss, which threatens human welfare and the global economy. They are expected to use biodiversity metrics and indicators in strategic sustainability work to understand and manage their impacts and dependencies on biodiversity. At the same time, this work remains at an early stage and is characterised by sever
This study investigates the combustion and emission characteristics of a two-stroke, direct-injection ammonia/diesel dual-fuel compression-ignition engine under low-load conditions relevant to large marine engines. Although ammonia is carbon-free and can reduce direct CO2 emissions, its low reactivity, strong evaporation cooling, and nitrogen chemistry may cause incomplete combustion, NH3 slip, an
Title: Investigating Maintenance Strategy Selection and Performance Measurement Readiness: A Case Study of Tetra Pak Authors: Siri Byrenius & Isa Roslin Supervisor: Joakim Kembro, Associate Professor at the Division of Engineering Logistics, Faculty of Engineering, Lund University Examiner: Ebba Eriksson Ahre, Postdoc at the Division of Engineering Logistics, Faculty of Engineering, Lund Un
This project aimed to redesign a ratcheting tool used for industrial door installation and to evaluate whether selected design for manufacturing and assembly methods were beneficial for the design development. The tool design went through three design iterations following a general concept development methodology, with the aim to minimise the amount of parts and unique manufacturing methods and
This thesis documents the design and fabrication of ceramic loudspeaker horns using slip casting and digital fabrication tools, and evaluates their acoustic performance against geometrically equivalent 3D printed PLA reference horns. Two horn profiles were developed and realised through a workflow combining mathematical profile generation, CAD modelling, 3D printing, and slip casting. The acousti
Digitala prenumerationstjänster är ofta enkla att påbörja men svårare att avsluta. Denna studie undersöker vilka dark pattern-mekanismer användare upplever som mest påverkande i avslutningsflöden och hur dessa påverkar beslutet att fullfölja, skjuta upp eller avbryta en uppsägning. Studien bygger på semistrukturerade intervjuer med användare som har erfarenhet av att avsluta eller försöka avsluta
The search for the dark matter (DM) particle has recently found itself at the forefront of physics research. Numerous experiments designed to capture the invisible particle have contributed to constraining its possible energy range. The Light Dark Matter eXperiment (LDMX) aims to delve into the yet unexplored sub-GeV region, searching for “light” DM (LDM). The experiment is designed to infer LDM p
This thesis explores how different generational cohorts in Sweden construct and compares trust toward bank-based and non-bank digital payment services during online checkout situations. Drawing on McKnight et al.’s Web Trust Model, the study examines how trust is shaped through perceptions of security, institutional safeguards, usability, and provider reliability in a highly digitalised payment en
Proteoglycans are macromolecules that play a vital role in mammals, acting as structural elements and ligands for proteins. Proteoglycans consist of a protein core, as well as one or more glycosaminoglycan, a saccharide chain synthesised by cells. This biosynthesis starts through the xylosylation of a serine residue of the core protein, that the glycosaminoglycan is subsequently built on. In vivo
Bakgrund: Kommunikation mellan sjuksköterska och patient är avgörande för vården. Akutsjukvårdens intensiva omgivning kan påfresta kommunikationen och bilda barriärer. Sjuksköterskans roll inom det kommunikativa mötet är centralt där vårdrelationen och personcentrerad vård är i fokus. Syfte: Att beskriva sjuksköterskors uppfattning om kommunikationsbarriärer mellan sjuksköterskor och patienter ino
This thesis investigates the fluid dynamics and phase behaviour of active microswimmers in unbounded two-dimensional suspensions. The first part derives analytical expressions for fluid correlations, fluid velocity variance, and energy spectra of non-interacting swimmers. While expressions derived from the Stokes equations, hence ignoring inertial effects, capture qualitative trends, they show qua
Denna studie undersöker hur inomhusklimat och luftflöde kan dimensioneras beroende på vilka aktiviteter som utförs i lokalen. Syftet med studien är att öka förståelsen för hur inomhusklimatet bör dimensioneras för att förbättra komforten vid fysisk aktivitet. Studien syftar även till att ge bättre vägledning vid projektering av träningsanläggningar genom att studera sambandet mellan aktivitetsnivåThis study investigates how to dimension the indoor climate and airflow depending on the activities performed in the facility. The purpose of this study is to better understand how the indoor climate should be dimensioned to improve comfort under physical activity. The study also aims to provide better guidance for the design of training facilities by studying the relationship between activity lev
Foster care placements constitute a central intervention within Swedish social services. Matching children with suitable foster families is considered essential for ensuring a stable living environment for the child. This matching process relies heavily on documentation and the transfer of information between professionals. This study aims to examine how foster care secretaries use and evaluate do
Extreme rainfall can disrupt public transport networks by flooding stops, route segments, and transfer connections. This study assesses the vulnerability and structural resilience of Gothenburg’s multimodal public transport network under a climate-adapted 100-year rainfall scenario. It also examines whether walking-scooter transfer links, which represent transfers using walking access and shared e
This thesis investigates the process optimisation, fabrication, and electrical char- acterisation of AlGaN/GaN high-electron mobility transistors (HEMTs). Before device fabrication, etching processes for AlGaN recess structures were optimised, followed by an analysis of SiNx and Al2O3 for use in device isolation and in the gate stack. The fabricated devices incorporated intentional variations in t
Civil society organizations and in particular LGBTIQA+ organizations tend to be naturally perceived as diverse. However, including ethnic/racial minorities in civil society organizations has its difficulties. The Israeli-Palestinian conflict adds another dimension that makes it even more complicated. Therefore, it is crucial to investigate how Israeli LGBTQIA+ organizations and projects discuss in
With the widespread deployment of convolutional neural networks (CNNs) at the edge, on-device fine-tuning has become essential for real-time model adaptation to address environmental accuracy degradation. However, on-device training is constrained by the "memory wall" energy bottleneck and numerical instability from low-precision fixed-point arithmetic. To tackle these challenges, this t
Digitaliseringen och den ökade användningen av Internet of Things (IoT) inom svensk offentlig sektor leder till att allt större mängder data genereras. En del av denna data riskerar att förbli oanvänd, vilket i studien benämns som dark IoT-data. Syftet med studien är att undersöka hur IoT-dataanvändningen tar form inom svensk offentlig sektor samt hur dark IoT-data uppstår och hanteras i relation
The rapid growth of photovoltaic (PV) deployment has raised concerns about the management of end-of-life PV modules, particularly crystalline silicon (c-Si) technologies approaching the end of their service life. Although PV systems contribute to renewable electricity generation, the increasing number of ageing modules poses environmental, technical, and resource-related challenges regarding wheth
