Search results

An increasing demand on load flexibility in power supply networks is the motivation to look at flexible, and possibly optimal control systems for power plants with carbon capture units. Minimizing the energy demand for carbon dioxide removal under these circumstances reduces the cost disadvantage of carbon capture compared to conventional production. In this work a dynamic model in Modelica of a c

Steam and water chemistry is fundamental for most power generation on indus trial scale. This includes the dosing of chemicals, the monitoring of both water and steam, as well as understanding the underlying causes to diagnose eventual problems. Öresundsverket, which was designed for seasonal operation, now has to perform multiple starts per year and in meeting these demands there is a possi bilit

This thesis examines how autonomous buses are interpreted and evaluated as a potential mobility solution within a multi-level planning context involving both municipal and regional perspectives. While autonomous vehicles are often framed as a key component of future sustainable transport systems, their implementation depends not only on technological development but also on social acceptance, inst

This thesis aims to address a dual crisis. Globally, the construction industry relies on a linear “take-make-dispose” approach and a “tabula rasa” tactic in each novel project, draining the Earth’s resources. Locally, around a half of residential buildings in Riga, Latvia, are of Soviet mass housing typology. These structures are on the verge of structural expiration, at risk of progressive collap

Solar drying technologies give smallholder farmers in low- to middle-income countries (LMIC) a low-cost way to reduce post-harvest losses and add value to agricultural produce. Yet bringing solar-dried products to market remains poorly understood, particularly in fragmented food systems where structural conditions shape market entry in ways that standard frameworks do not account for. This thesis

Our way of handling the climate crisis is not fast or ambitious enough. We have the opportunity to plan for a better future, not just accept the consequences of our failure. To plan for a better future, we first need to conceptualise a vision of a desired end-point, in this case a climate-neutral and sustainable city. This essay is meant to inspire radical change by using and expanding the radical

This thesis explores experiences of premenstrual syndrome (PMS) and receiving medical treatment for it. Adopting a material-discursive intrapsychic model of thought, the participants' depictions are analyzed through objects, discourses, emotions and internal value systems in order to give various perspectives on PMS as well as contextualize the complex relationship between individual, group, a

Technical drawings play an important role in many industrial processes, including product development, manufacturing, and lifecycle management, by representing the product definition. The purpose of the study was to investigate which processes influence technical drawing creation and management, what challenges are associated with these processes, and how these challenges can be addressed through

This thesis presents the design and schematic-level simulation of a highly linear mixer-first receiver front-end implemented in CMOS, targeting improved robustness against strong input signals. The proposed architecture employs a current-mode passive mixer directly loaded by a low-impedance transimpedance amplifier (TIA) in order to minimize the voltage swing at the mixer output and thereby enhanc

With approximately 94 percent of traffic accidents being caused by human error, improving driver behaviour has the potential to save lives. To encourage safer driving, Volvo Cars is developing a Safety Coach feature for their mobile application. However, pilot studies of a minimum viable product (MVP) indicated low user retention, suggesting the need for design elements that better support user en

Methane (CH₄) emissions from landfills are a key uncertainty in Sweden’s national greenhouse gas inventory. This thesis evaluates whether UAV-based CH₄ measurements can complement inventory-based estimates, using Filborna landfill in southern Sweden as a case study. UAV-derived emissions from 2022–2024 were compared with an IPCC Tier 2 First Order Decay model, reproduced from Sweden’s national inv

Att identifiera proteinmönster associerade med lungsyndromet acute respiratory distress syndrome (ARDS) hos patienter med underliggande sepsis är en central utmaning inom intensivvårdsforskning. Konventionella univariata metoder riskerar att missa icke-linjära associationer och högre ordningens interaktioner som speglar syndromets sanna komplexitet, och systematisk utvärdering av alternativa metodIdentifying proteomic patterns associated with acute respiratory distress syndrome (ARDS) in sepsis patients is a central challenge in critical care research. Standard univariate approaches may miss non-linear associations and higher-order interactions that reflect the true complexity of the syndrome, yet systematic evaluation of alternative methods is lacking. This thesis introduces a unified eva

Atmospheric particles play a significant role in radiative forcing through light scattering and new methods are called for to better characterize their impact. Typical Lidar systems emit single wavelength light, not utilizing full spectral information from scattering measurements. This thesis aims to use a hyperspectral lidar system to measure the spectral dependence of scattering and absorption

Air pockets in pressurized pipelines may reduce hydraulic capacity, increase head losses, and affect system operation. In downward sloping pipe sections, a key question is whether the water flow can transport a trapped air pocket downstream or whether the air is likely to remain stationary, which would require an air valve to evacuate the air. This thesis compares selected criteria and guidance so

With the development of additive manufacturing, the freedom in developing complex cooling structures has been enlarged greatly. Topology optimization is one of the methods that can give out cooling structures beyond the limits of geometric parameters. In this research, an algorithm of topology optimization with heat transfer is derived. The detailed optimization procedure is presented in this work

This paper introduces a novel dataset that serves as a prototype of what we call the ‘Job Ads Database’ (JADB). The underlying job advertisements are gathered from the Swedish digitalized newspaper corpus hosted by and made accessible through the Swedish National Library (Kungliga Biblioteket). JADB enables studying how the frequency and content of job advertisements change over time and sheds new