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Virus capsids shows promise within a wide variety of applications. However, the current lack of understanding about their self-assembly limits their usefulness. A study of the amino acids relevant for their assembly would be of great use by giving insight to the mechanic behind it. Since the number of proteins involved in each capsid is so big, there is a need for a reporter system enabling easy a
I denna examensarbetesrapport beskrivs utvecklingen av en dold och hållbar produkt för ström och signalöverföring till skjutdörrars rörliga dörrblad. Examensarbetet har genomförts i samarbete med Assa Abloy Entrance Systems, med målet att möjliggöra användningen av tillbehör som smarta glas, skärmar integrerade i dörrglaset, elektriska lås och sensorer monterade på dörrbladen hos deras skjutdörrarThis master’s thesis report describes the product development process of a durable and concealed product for transferring power and signals to the moving door leafs of sliding doors. The thesis has been conducted in collaboration with Assa Abloy Entrance Systems, with the goal of enabling the use of accessories such as privacy e-glass, screens integrated in the glass, electric locks and sensors mo
One fifth of the energy consumed by buildings in Sweden is by those built before 1945, many of them constructed from solid masonry walls. Improving their heating energy consumption is a challenge we must face in light of human’s impact on climate change as well as increasing energy costs. Improving thermal performance can be achieved with many insulating materials however the environmental impact
Interdisciplinary teams are considered to be of great importance for addressing complex problems of the present and future, as they are able to address the complexity of society’s most pressing issues such as climate change, or healthcare solutions. They can be found in multiple areas concerned with future- related problems. Research on specific fields such as healthcare and social work suggests t
Restidskvot används som ett mått över kollektivtrafikens attraktivitet, många kommuner delar viljan att göra kollektivtrafiken just attraktivare för att öka andelen resenärer. Stockholms län visade i en rapport för över 25 år sedan ett samband mellan restidskvot och kollektivtrafikandel. Den här rapporten undersöker huruvida ett liknande förhållande existerar för medelstora kommuner och hur det saTravel time ratios are a popular way to measure the attractiveness of public transport. There is a demand within the Swedish municipalities for ways to make public transport more popular and increase the number of passengers. This study investigates if a connection between the ratio of travel time and the share of passengers travelling by public transport can be shown for medium sized municipaliti
Interdisciplinary teams are considered to be of great importance for addressing complex problems of the present and future, as they are able to address the complexity of society’s most pressing issues such as climate change, or healthcare solutions. They can be found in multiple areas concerned with future- related problems. Research on specific fields such as healthcare and social work suggests t
This Master’s thesis evaluates the performance of lightweight compression algorithm aimed for IoT sensor devices. These devices are most often battery driven and produce large amounts of sensor data which is sent wirelessly. Compressing the data could be a tool in decreasing the power usage of these devices. The algorithms were evaluated based on their compression ratio, memory consumption and CPU
To mitigate greenhouse gas emissions resulting from the combustion of fossil fuels in conventional transportation—including vehicles, ships, and aircraft—a wide range of alternative energy sources have been explored, such as liquefied natural gas (LNG), methanol, liquefied petroleum gas (LPG), biomass, solar energy, hydrogen, fuel cells, and batteries. Among these, battery electric propulsion syst
Enzymatic hydrolysis using immobilized lipases for the production of free fatty acids and glycerol is a promising alternative to the current industrial standard. This study investigates a set of hydrolysis reactions catalysed by four different immobilization techniques to increase the knowledge on two-phase systems. The evaluation of how water purity, buffer salts, and water amount affect the reac
Accurate modeling of wireless channels in urban environments is crucial for the design and evaluation of communication systems. Geometry-Based Stochastic Channel Models (GSCMs) provide a balance between physical retings—an oversimplification that can reduce model fidelity.alism and computational efficiency by simulating Multi-Path Components (MPCs) through simplified ray tracing and stochastic sca
The main goal of this investigation is to determine the optimal number of cashiers to be employed in a first-in-first-out (FIFO) queuing system, based on the number of customer arrivals, the average revenue generated per customer, and the rate at which each customer abandons the queue, referred to as the reneging rate. This is done by using continuous-time homogeneous Markov Chains to model the ar
Denna rapport redogör över utvecklingsprocessen för ett silikonfritt, läckagetätt lock för matlådan IKEA 365+, för att undvika användandet av en silikonpackning som produkten gör idag. Drivkraften bakom projektet är att silikon är ett mycket energikrävande material att producera, samt är inte i stor skala återvinningsbart idag. Rapporten använder sig av en traditionell produktutvecklingsprocess saThis report elaborates on the development process of a silicone free, leakproof seal for the lid of the IKEA 365+ food storage platform, to alleviate the need for a silicone gasket that is used for the product today. Silicone is undesirable due to the energy intensive production and because it is not recyclable at large scale. The report uses a traditional product development process along with si
This master’s thesis explores the design of monopile foundations for a conceptual offshore wind farm in the Golfo de Cádiz, Spain. It uses a one-dimensional (1D) finite element (FE) modeling approach, based on the PISA-study. With the PISAstudy, new design models are available, which replace the traditionally used p-y method. A central part of this thesis is the Abaqus software, which is used to m
Mot bakgrund av ett ökat individualiserat arbetsliv och ökade krav riktas denna studie mot lärares kompetensutveckling i en sådan kontext. Studiens syfte är att öka kunskapen om lärares möjligheter till kompetensutveckling och hur lärare upplever och hanterar ansvaret för sitt eget lärande och utveckling i ett arbetsliv präglat av individualisering och ökade krav. Det mynnar ut i följande frågestä
Textile recycling is highly needed as great amounts of waste are produced every year and most of it is put into landfill or incinerated. This thesis lays the foundations for a quality control system which may be applied for controlling the recycling of cellulosic textiles in an upcoming pilot plant based on ShareTex’s technology. The quality control system was constructed as a mathematical model r
This thesis examines how female-targeting fintech firms can internationalize in ways that genuinely promote financial inclusion for women. Conducted as an exploratory interview study with Female Invest, it builds on the broader observation that gender remains largely absent from fintech’s outlook. The study addresses two key research gaps. First, financial inclusion efforts often overlook how cult
The bulk of Norwegian offshore oil and gas platforms are self-sustained with energy, burning a portion of the extracted gas in turbines to power production. Replacing this energy with electricity from renewables – electrifying – has been put forward as a way to quickly slash domestic emissions. This, all while retaining and expanding fossil fuel production, whose lion’s share of emissions stem not
Biometric fingerprint recognition is a cornerstone of modern authentication systems, yet conventional convolutional neural network approaches often struggle with challenging cases, subjected to noise and partial overlap. This thesis explores the potential of transformer-based architectures to address these challenges. We design, implement, and evaluate five models on a large-scale dataset of over
To reduce reliance on energy-intensive, chemically synthesised nitrogen sources in microbial cultivation, we investigated the integration of the nitrogen-fixing bacterium Azotobacter vinelandii into a bioconversion process with the recombinant yeast Saccharomyces cerevisiae. Our objective was to develop a more sustainable approach by utilising biological nitrogen fixation to supply ammonium direct
Reverse electrodialysis is a membrane-based technology that utilizes the salinity gradient between two solutions (e.g. river water and seawater) to generate sustainable energy. A critical component of RED systems is the spacer, which ensures effective flow distribution and ion exchange through the membranes. Conventional spacers suffer from the shadow effect, which limits ion transport and reduces
