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The increase in contact resistance within battery systems remains poorly understood, despite being one of the primary contributors to battery degradation. This project aims to investigate this phenomenon by modeling the electrical interface as a contact between a pin and a busbar. The main goal is to build a DOE and machine learning framework, using Bayesian optimization to efficiently explore the
Betsockerprocessen är en energiintensiv process där ångdriven indunstning används för att avlägsna stora mängder vatten från den upprenade tunnsaften, som innehåller det från betorna extraherade sockret. I takt med industrins önskade fokus på energieffektivisering har membranteknologier för förkoncentrering av tunnsaften fått ett ökat intresse. Trots lovande resultat i ett begränsat antal försök åThe beet sugar process is an energy intensive process relying on steam evaporation to remove large amounts of water from the purified thin juice containing the sugar extracted from the beets. As the industry seeks greater energy efficiency, membrane technology for pre-concentration of thin juice has attracted interest. Limited trials have shown promise but fouling, sugar losses or high osmotic pre
This study investigates the corrosion behavior of a magnesium-zinc (Mg-Zn) alloy in a simulated body-like environment, with the aim of optimizing its degradation rate for biodegradable medical implant applications. These implants are designed to support bone healing and then gradually degrade once no longer needed, thereby eliminating the need for additional surgery. Magnesium alloys are promising
Research question: "How do young women construct and perform aspirational identities through the Clean Girl aesthetic on digital platforms?" Purpose: The purpose of this study is to expand the understanding of how trendy aesthetics on digital platforms like TikTok shape users’ identity construction and self-performance. Theoretical perspective: Two main theoretical fields, aspirational
Global food systems are increasingly vulnerable to climate change, energy volatility, and geopolitical disruptions—threatening the security and stability of perishable supply chains. This thesis investigates the potential of aseptic packaging technologies, specifically ultra-high-temperature (UHT) treatment and sterile filling, as a means to reduce energy consumption and enhance resilience in the
Buildings are responsible for approximately 30% of global energy use, with HVAC systems accounting for 40% of that demand. Among these, data centers have become significant energy consumers, requiring highly efficient and stable cooling solutions. This project aims to explore data-driven control methods to improve the energy efficiency of data center cooling systems as well as reduce the effort an
This study presents a custom surface electromyography (sEMG) data acquisition system combining the TI ADS1299 analog-to-digital converter, Teensy MicroMod micro-controller, and a Python-based graphical user interface for real-time signal monitoring and guided data collection. The system outperformed the widely used Ninapro dataset across all major classification metrics, demonstrating improved cla
This thesis presents a comparison between implementations of the inverse square root function, using two approximation algorithms; Harmonized Parabolic Synthesis and the Newton-Raphson Method. The input is a 15 bit fixed-point number, the range of which is selected so that the implementation is suitable for use as a block implementing the inverse square root for floating-point numbers, and the des
The aim of this thesis has been to investigate the legal conditions and process for triggering Credit Default Swaps, which are derivative instruments to shift credit risk exposure between parties in an underlying financial instrument. The condition is called credit event and a case study has been done on the Greek credit event in 2012. The thesis shows that there is a clear and robust framework o
Previous studies indicated that skylights can improve the daylight conditions in house or office buildings, decrease the electricity demand for lighting, provide natural ventilation and reduce the heating demand through passive solar heat gain exploitation. This thesis analyses the effect of skylights on the energy use, daylight conditions and thermal comfort in a classroom. The study is performed
This essay addresses the needs of so called ‘climate migrants’. It focuses exclusively on the relocation of the population of Kiribati, a small island nation in the Pacific Ocean whose very existence is threatened by the effects of climate change. With the principles of causality, morality, capacity and community, Miller’s Connection Theory provides the study with a framework for discussing the di
The body shows impressive control capabilities in terms of the speed and the precision with which movements can be carried out under a wide variety of circumstances. The cerebellum and brainstem nuclei, including the cuneate nucleus, are believed to play a crucial role in this control. If these control mechanisms can be unveiled, this could yield important insights in not only medicine and neuroph
This work presents an observer design for grid current and capacitor voltage of voltage source pulse-width modulation (PWM) converters with LCL filter. Theoretical aspects including the mathematical LCL filter system observability, observer placement strategy and practical discretization implementation. It gives insight to mathematical modelling of the line filters dynamics. By the limitations of
This paper explores freshwater reservoir greenhouse gas emissions from a policy perspective. Existing science on reservoir emissions indicates that reservoirs can emit significant amounts of greenhouse gases and this is of particular concern for tropical reservoirs. Current scientific knowledge has led to some precautionary policy measures, but, in general, policy development has been slow. At the
The Sami people have a long history of colonization, discrimination, marginalization and prosecution in their past. My thesis deals with how the Sami identity is created and reproduced today and how it has been shaped in the light of the history of the Sami people and the policies pursued by the Swedish government through times, and also why the search for identity, heritage and roots has had such
The aim of this study is to 1) describe the structure and types of associational and organizational networks within immigrant women’s community in southern Sweden Malmö, Lund and Eslöv, 2) examine how such networks facilitate Thai women’s well-being and integration by providing social supports and services, and 3) present how Thai women perceive the role of social and organizational networks in re
The academic interest in remote work has drastically increased over recent years, particularly during the COVID-19 pandemic. Existing studies have proven that remote work has advantages and disadvantages for employers and employees. However, little is known about the influence of remote work and the relevant factors in the context of newcomers and their organizational socialization. Building on th
Denna masteruppstats ämnar utröna lönsamheten och de faktorer som påverkar lönsamheten vid ingåendet av en kort position i finansiella derivat på den nordiska elmarknaden samtidigt som motsvarade position anskaffas genom handel på Nord Pools day-ahead (DA) marknad och via så kallade pay-as-produce Power Purchase Agreements (PPA), samt genom tillämpandet av batterilager för att mitigera effekterna This master’s thesis aims to assess the profitability and the factors impacting the profitability of entering a short position in financial derivative contracts on the Nordic power market while procuring electricity through a pay-as-produced power purchase contract and on the day-ahead (DA) market, simultaneously the strategy utilizes a battery storage system to mitigate the effects of price spike
