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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
At the SCA papermill in Obbola byproducts from the pulp- and paper production are incinerated together with purchased wood fuels to produce steam in Ångcentral 2 (Steam centre 2). As the boiler was built for other types of fuel there are currently problems with both emissions and corrosion. Earlier studies, on other boilers, indicate that dosing sulphur could help solve some of these issues. This
With the evolution of window design, the focus has shifted towards comfort and efficiency, prioritising measurable performance over experiential qualities. This often comes at the cost of authenticity, identity, and beauty, causing domestic spaces to feel superficial and anonymous. In order to create meaningful and life-enhancing environments that are loved and cared for, the fundamental role of t
Bygg- och fastighetssektorn står för en betydande andel av Sveriges och EU:s totala växthusgasutsläpp, och tillverkningen av betong är en av de mest utsläppsintensiva delarna av byggprocessen. Med bakgrund av ökade klimatkrav undersöker denna studie förutsättningarna för återbruk av större betongelement i svenska byggprojekt. Studien analyserar den miljömässiga lönsamheten i återbruk, identifierarThe construction and real estate sector accounts for a significant share of Sweden's and the EU's total greenhouse gas emissions, and the production of concrete is one of the most emission-intensive parts of the construction process. Against the backdrop of increasing climate requirements, this study examines the conditions for reusing larger concrete elements in Swedish construction proje
This thesis investigates the empathic relation between the audience, as the experiencing subject, and narrative characters of a fictional story, by introducing the concept of narrative empathy. A part from elaborating this concept, the thesis seeks to empirically investigate how two different media, film and novel, modulate this relationship and which narrative categories (perspective, direct spee
Den här rapporten kommer gå igenom designprocessen och resultatet för produkten BRIO EXPLORE; ett komplement till BRIOs tågbana. För barn är allt i världen nytt och underligt. För att tolka och förstå livet, och det som existerar runt omkring dem, använder barn lek. De övar på sociala interaktioner, låtsas att de lagar mat, städar eller odlar, härmar djurläten eller samlar stenar. Att utforska genThis report will outline the design process and result for the product called BRIO EXPLORE; a complement to BRIOs railway system. For children, everything in the world is new, and strange. To make sense of life and the things that exist around them, children use play. They practice social interaction, pretend to cook, clean or garden, mimick animal sounds, or collect rocks. Exploring through play
Detta kandidatarbete undersöker hur en keramisk ljusstake kan utformas för att anpassa sig och förbli relevant i hemmet över tid. Utgångspunkten är att hållbarhet inte enbart handlar om materialets fysiska livslängd, utan i lika hög grad om hur länge ett objekt upplevs som värt att behålla. Arbetet inleddes med en förstudie bestående av användarstudie, litteraturstudier och konkurrentanalys. Unde
Surfboard bags are precious cargo. At least, they are to the traveling surfer. The anonymous baggage handler tossing that bag into a plane’s undercarriage? Not so much. Hence why, all too often, there are horror stories of broken boards by airlines, surf trips ruined, and angry social media posts. As a surfer I have encountered the uncertainty of whether my surfboards made it in one piece to my
Målet med detta projekt är att skapa en produkt som utforskar kombinationen av träning och förvaring, samt hur dessa funktioner skulle kunna integreras i en möbel. Modularitet, anpassningsförmåga och estetik är nyckelord i processen för att skapa en möbel anpassad för hemmiljö.
This project explores how urban design can support a more inclusive, walkable and caring neighbourhood for older women in Copenhagen. Located in Refshaleøen, the project uses independently living women aged 65–75 as a critical lens for rethinking future urban development. The proposal focuses on everyday needs often overlooked in conventional planning, including slower movement, rest, safety, acc
I denna studie undersöker vi upplevelser och effekter av vårt eget nyskrivna metodmaterial för körer. Tidigare forskning har visat att många körer idag ger uttryck för restriktiva könsnormer vilket gör verksamheten mindre inkluderande för de som bryter mot dessa normer, särskilt transpersoner. Vi har därför konstruerat ett metodmaterial med syfte att tillgängliggöra normkritiskt och normkreativt aIn this study, we investigate the experiences and effects of our own original pedagogical material for choirs. Previous research has shown that many choirs today still hold onto restrictive gender norms that make the activity less inclusive for people who do not fit into these norms, especially transgender people. We have therefore constructed a pedagogical material with the aim of making norm-cri
I den här studien undersöks hur sex gymnasielärare som undervisar i ämnet/kursen Instrument eller sång tänker och resonerar kring deras undervisning i övning. Något som även undersöks är vilka arbetssätt de använder sig av för att främja elevernas självständighet samt vilka övriga faktorer som påverkar övning. Författarnas upplevelser om brister i undervisning kring övning är bakgrunden till ämnetThis study explores six music teachers’ thoughts and reasoning regarding how they teach students to practice. Additional topics examined include what methods teachers use to encourage independence and what other factors affect students’ practice. The study originated from the authors’ perception that the broader teaching community places insufficient emphasis on teaching effective instrument pract
This thesis investigates the applicability and performance of reinforcement learn- ing (RL) for inventory management of spare parts in a single-echelon setting. Traditional inventory control methods, such as (R,Q)-policies, typically decou- ple forecasting and ordering decisions, which may lead to suboptimal system- wide performance, particularly in environments characterized by intermittent and s
Masonry reuse has gained increasing attention within sustainable construction due to the substantial use and the large environmental impact associated with construction and demolition waste. The bond between brick and mortar plays a critical role in both the structural performance of masonry and the potential for future brick reclamation. Strong brick–mortar bonds improve structural capacity but m
This thesis presents the evolution, design, and test of an Orthogonal Frequency Division Multiplexing (OFDM) based radar system. The application of this research question involves the implementation of an Integrated Sensing and Communication (ISAC) radar system that can be seamlessly integrated into existing wireless communication networks. The primary objective of this thesis project is to integr
Small interfering RNAs (siRNAs) are a rapidly growing class of oligonucleotide therapeutics that modulate gene expression by inducing targeted mRNA degradation. siRNAs are potent and their effect is long-lasting, making them promising candidates for chronic neurodegenerative disease. However, siRNAs can elicit both on- and off-target toxicity, and while acute neurotoxicity has been characterized,
High grade serous ovarian cancer (HGSOC) is accompanied by an immune-rich but heterogenous tumor microenvironment. Although tumor associated tertiary lymphoid structures (TLS) are linked to favourable antitumor immunity, B cells may also adopt spatial distribution patterns favourable for immune suppression. This study evaluated whether the abundance and spatial distribution patterns of CD20+ B cel
This thesis presents an automated pipeline developed for reconstructing the 3D flight trajectories of bats navigating a cave environment purely from multi-channel audio recordings. The pipeline was developed and validated using the Ushichka dataset which contains multiple simultaneous audio and video recordings of bats in their natural habitat, the Orlova Chuka cave in Bulgaria. The proposed pipel
