In life-threatening conditions in the vessels of the brain, neurointervention can be the treatment that saves lives. With only one incision in the vessel of the groin, a catheter can be navigated to the affected vessel and treatment can be performed using tools inserted through the catheter. In this report, a training model for neurointervention consisting of interconnected vascular models has be

Universum tros ha en diameter på kring 93 miljarder ljusår. Det är därför svårt att tänka sig att hela universum en gång i tiden fick plats i en enda punkt för 13,8 miljarder år sedan. Sen kom den stora smällen! Det som följde var troligen en kort period av väldigt snabb expansion. På samma sätt som ett jetplan som accelererar förbi ljudvallen resulterar i en ljudbang, borde den snabba expansionenIn this thesis, the consequences of introducing Yang-Mills fields into cosmology are investigated. This is done by the effective action approach, in which the coupling constant is allowed to depend on the quantum fields. The equation of state and scale factor are then found for the flat universe filled with either chromoelectric or chromomagnetic fields. From this, we draw conclusions about the hi

Purpose: The purpose of this study is to investigate whether certain CEO- and firm characteristics have an impact on the extent of abnormal return on Swedish firms at the event of a CEO insider trade. Furthermore, the study aims to examine whether there is a difference depending on firm size and sector. Methodology: An event study has been performed based on the market model where the presence of

Sverige är extremt beroende av lantbruket för sin produktion av mat. Om vi inte anpassar lantbruket till ett förändrat klimat kan det leda till att vi står utan mat på bordet. Genom klimatanpassning går det att förhindra negativa konsekvenser av klimatförändringar, men också att utnyttja fördelarna med längre växtsäsong och varmare klimat. Detta kräver medvetna bönder och att de har rätt förutsättThe agricultural sector is both affecting and affected by climate change. Future climate is predicted to be warmer and wetter with more weather extremes. This is going to affect the already vulnerable agricultural sector and we need to strengthen our food production and food security. Therefore, agriculture needs to adapt to climate change to prevent negative effects but also to utilize the p

Although several studies have reported a negative association between self compassion (SC) and depressive symptomatology (DASS), less is known about the pathways that constitute this relationship. This study aims to expand on the current research by examining if shame, guilt, or rumination act as independent mediators between self-compassion and depressive symptoms in a sample of young adults bet

Elektrokemi är ett område där kemiska reaktioner sker genom ett utbyte av elektroner. Vissa elektrokemiska reaktioner sker naturligt medan andra kan drivas genom att ström förs genom systemet. Ett elektrokemiskt system består av elektroder som är de ytor där elektroner lämnas eller hämtas. Elektroderna är sedan placerade i en gas eller vätska som för elektronerna mellan dem. Elektrokemiska reaktioThere is a great interest in studying detailed changes at electrode surfaces during electrochemical processes to better understand the electrochemical reactions at the electrode surface-liquid interface and improve the electrode efficiency. The Au(110) surface has a known (1$\times$2) missing row reconstruction in vacuum conditions, which can change into higher-order (1$\times$3), (1$\times$5), an

This thesis examines the theory of headwinds by Robert J Gordon related to Sweden’s economic growth since the 1970s. The specific questions asked are how the two headwinds of income inequality and educational attainment in the USA can be related to a Swedish context. Gordon’s theory is part of a debate on secular stagnation. This thesis aims to broaden that debate by applying one theory of secular

Arbetet har utförts på Balsgård FoodTech AB i Kristianstad som ägs och drivs av Mårtensson Consulting som också har önskat få detta arbete utfört. Arbetet har syftat till att undersöka om det är möjligt att i mindre fabriker samla in och sammanställa data för att kunna presentera och använda sig av. Detta har utförts genom att studera fabrikens implementerade system och variabler samt inspektera eThe work has been carried out at Balsgård FoodTech AB in Kristianstad, which is owned and run by Mårtensson Consulting, which has also wished to have this work carried out. The work was aimed to investigate whether it is possible in smaller factories to collect and compile data in order to be able to present and use it. This has been done by assessing the factory's already implemented systems

Deposition of ferroelectric hafnium zirconium oxide (HZO) on semiconductor samples with Atomic Layer Deposition (ALD) has proven to be a viable method of production. But while the physical processes of ALD deposition is relatively well know, there exists some gaps in knowledge about different parameters for the ALD and the resulting depositions. This work is about analysing mainly how the purge ti

Globally, deforestation is occurring at staggering rates and causing tremendous impacts on the planet. Indigenous people, in particular, have long depended on the forest, and their beliefs and ways of life are highly affected by the changes occurring around them. To explore these impacts, Kuy indigenous people living in Pneak Roluk, inside the Prey Lang forest in Cambodia, have been selected as a

In the last few decades, the population in Lithuania has been gradually becoming older due to a combination of the declining fertility rate, negative net migration, and rising life expectancy. It is estimated that this process will be even more rapid in the future, as it is projected that by the year 2100 the share of elderly people over 65 will increase by 84%, whilst the working-age population (

The problem of pricing American stock options is far more complex than pricing European options due to the possibility of early execution. This feature means that the decision to either hold on to the option or exercising it early must be continually evaluated, leading to closed form solutions such as the Black-Scholes Formula to not be applicable on American options written on dividend paying ass

IKEA, a company well known around the world for their furniture, is also keen on using digital solutions to improve the customer experience. One of these solutions is the self-serving kiosk, a 27" touchscreen, that helps the customers find and buy products. As many other companies of similar size, IKEA wants to use the data from their digital solutions, as a base for some of their decision ma

This thesis presents the first attempt to estimate Dissolved Organic Carbon (DOC) in inland waters over a large-scale area using satellite data and machine learning (ML) methods. Four ML approaches, namely Random Forest Regression (RFR), Support Vector Regression (SVR), Gaussian Process Regression (GPR), and a Multilayer Backpropagation Neural Network (MBPNN) were tested to retrieve DOC using a fi

Lung diseases such as chronic obstructive pulmonary disease (COPD) is one of the most common casue of death worldwide, yet the lungs are one of the most difficult parts of the body to examine. Today's technology hinder the diagnosis of the lungs and great difficulties occurs when trying to find the cause of illness. Therefore a large number of people suffer from hidden lung diseases whitout kn

Wetlands are valuable ecosystems, and assets for human life, that must be regularly monitored, starting with accurately mapping their location and extent. However, an updated national inventory of wetlands is needed. The availability of multi-source data, and advanced machine learning algorithms in Google Earth Engine (GEE) offers excellent opportunities to map wetlands on a country-wide scale. Th

The spectral density function can be used to describe the stochastic motions of proteins. It has long been known that discrete values of the spectral density can be mapped by obtaining three Nuclear Magnetic Resonance (NMR) relaxation parameters: R1, R2 and NOE. In this work relaxation parameters are obtained at four different magnetic field strengths for two protein:ligand complexes of galectin-3

The main monitoring method during labor is cardiotocography, CTG, which measures the fetal heartbeat, FHR, as well as the uterine contractions, TOCO. The CTG is a valuable tool in assessing the fetal status and it is evaluated intermittently by clinicians during the progress of the labor. However, abnormalities in the CTG are often non-specific which makes the interpretation difficult and inconsis

This thesis argues that the reason behind the lack of sustained economic growth in the Middle East compared to East Asia lies in the technology gap between the two regions, and it attempts to find an explanation for it. Through an empirically supported narrative, the paper applies the social capability framework to explain the low level of technology capability in the Arab region. The research con