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This Master Thesis has been performed at Svenska Spel with the aim to detect playing customers probability to churn, i.e. quit their gambling. The first part of the Thesis consists of some previously work done within the field, some facts about Svenska Spel and explanations of used software. The next part describes how the work has been done and the third part give the reader the theory behind the
Sammanfattning Aktiv eutanasi och assisterat självmord är två frågor som tidvis dyker upp i den allmänna debatten i Sverige. Det är dock få politiker som vill ta i frågan, detta trots att en betydande del av det svenska folket är positivt inställda till att tillåta aktiv eutanasi. Genom åren har ett antal rättsfall berört frågan om aktiv eutanasi men rättsläget över vissa typer av aktiv eutanasi äSummary Active euthanasia and assisted suicide are two issues that from time to time appear in the Swedish public debate. It is however few politicians that want to bring up the issues, in spite of that a considerate part of the Swedish population have positive attitude to legalise active euthanasia. Through the years a number of cases have addressed the issue about active euthanasia but the legal
The purpose of this qualitative study was to explore how young adults experience depression and antidepressant medication, and how they understand their condition. Using semi-structured interviews, eleven interviewees between the ages of 20 and 30, who had been diagnosed with depression and had medicated with SSRI or SNRI, were interviewed, and the results were analyzed using thematic analysis. Th
The purpose of this thesis is to model and forecast Swedish government yields by using three classes of the Nelson Siegel Model Family. The three models considered are the Dynamic Nelson Siegel Model, Arbitrage-Free Nelson Siegel Model and Dynamic Nelson Siegel Svensson Model. A brief introduction to interest rate theory is given with emphasis on coupon bonds and yield curves. To introduce the con
Heart Rate Variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. High frequency (HF) HRV signals (0.12-0.4 Hz), especially, has been linked to parasympathetic nervous system (PSNS) activity. Activity in this range is associated with the respiratory sinus arrhythmia (RSA). In this thesis, we are interested in the differences between the power of HF-
This study aims to investigate if micro- and nanoparticles of polystyrene affect microorganisms in soil. This was tested by using microfluidic chips, which are new for investigation of soil ecology questions, providing artificial channels reflecting soil conditions as well as being transparent for seeing real-time interactions. Eight microfluidic chips were made; four were filled with a micro- and
In the construction of high-speed railways, an important starting point is to make as little Intrusion on land as possible, therefore it is of high importance to carefully investigate which construction alternatives are the most advantageous. The purpose of this work is to compare and evaluate land use and building on viaduct. The work will be based on literature and interview studies. Sections of
Previous studies clarified that the electron enriched NADH and NADPH by RBC glycolysis could be used in an extracellular chemical reaction, where electron energies are extracted by an electron mediator methylene blue (MB). The reduced form of MB permeates the phospholipid bilayer of liposomes and reduce encapsulated ferric methemoglobin (metHb) to ferrous hemoglobin. Moreover, in vitro screening s
The goal of this thesis is to answer the question: Will a special cash dividend announcement from a company on NASDAQ GS create abnormal returns? This thesis will therefore find and measure abnormal returns surrounding a special cash dividend announcement. This is done by performing an event study, following the market model, consisting of 96 announcements from companies listed on the Nasdaq GS. T
The study examines the narratives of the Decembrist revolt created in and around Russian state-funded cinema. By exploring the narratives surrounding a particular instance of political dissent in the past, the research seeks to uncover the factors that impact on the negotiation of cultural memory between the text and the audience in the context of state-influenced media. This exploration is based
Preterm birth is a leading cause for birth complications and neonatal mortality in the world. It remains difficult to predict whether a preterm birth will occur, which hinders the possible use of prevention treatments. This thesis investigates the use of machine learning models in the prediction of spontaneous preterm birth. In addition, possible heterogeneous performance of these models among dif
Chagas disease, also known as American Trypanosomiasis, is a parasitic infection caused by the triatomine bugs, commonly referred to as kissing bugs. It is the deadliest parasitic disease in South America but has spread beyond this region due to migration and climate change. Approximately 70 million people are at risk of infection, and there is no cure for the chronic phase of the disease. In prev
The construction of episodic memory is an automatic process. Event segmentation theory proposed that segmentation of the continuous perceptual stream into separate memory events occurs when changes in external boundaries lead to changes in internal perceptual and conceptual boundaries. The influence of perceptual and conceptual boundaries on episodic memory encoding has been the subject of intensi
Leukemia is the most common type of cancer in children, with B-cell acute lymphocytic leukemia (B-ALL) being a common type in both children and adults. Different types of treatments are available, such as chemotherapy, stem cell treatment and immunotherapy. However, a recurring problem is relapses, with the survival rate after relapse being very low. In combating this issue new methods have been d
Children's blood-lead concentration (B-Pb) is well studied, but little is known about cadmium (B-Cd) and mercury (B-Hg), in particular for central Europe. Such information is necessary for risk assessment and management. Therefore, we here describe and compare B-Pb, B-Cd and B-Hg in children in six European, and three non-European cities, and identify determinants of these exposures. About 50 scho
BACKGROUND: An increasing number of young patients are undergoing knee arthroplasties. Thus, the long-term risks of having a knee prosthesis must be evaluated. This study focuses on the potential carcinogenic effects of the prosthesis; it is a long-term follow-up of all patients in Sweden between 1975 and 2006. METHODS: The incidence of cancer in a total population of operated individuals was comp
Diabetic kidney disease, or diabetic nephropathy (DN), is a major complication of diabetes and the leading cause of end-stage renal disease (ESRD) that requires dialysis treatment or kidney transplantation. In addition to the decrease in the quality of life, DN accounts for a large proportion of the excess mortality associated with type 1 diabetes (T1D). Whereas the degree of glycemia plays a pivo
Paleomagnetic results are presented for two Paleoproterozoic mafic dykes in the Taivalkoski area in northern Karelia Province of the Fennoscandian shield where, based on K-Ar data, the crust has seen minimal effects of the otherwise pervasive 1.8-1.9 Ga Svecofennian orogeny. Within this study a new U-Pb baddeleyite age of 2339 +/- 18 Ma has been determined for one of the E-W trending dykes (dyke A
