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Image registration of X-ray images is used to correctly align the patient before the cancer tumour is treated with sets of high dose X-ray radiation. Before the first treatment, a simulated X-ray image is taken showing the best possible localisation of the tumour. From then on, after each of the radiation treatments of the tumour, a low dose of the X-ray theurapeutic radiation is used to take an i

This ‘Automatic Test System (ATS) for Network Servers’ Master Thesis project was carried out from September 2000 till March 2001 at Axis Communication AB, Lund. The project was to build a common test system platform for all future tests of Axis network servers’ products. Thus, overcoming the current practice of costly dedicated test system development for individual products. The project is a gra

Modern gas turbines use lean premixed combustion to achieve the best compromise between emissions and efficiency. This type of combustion is very sensitive to thermoacoustic instabilities causing high pressure sound waves. One reason for these intense pressure fluctuations is the flame is acting as source of sound, that is placed in an acoustic resonator accumulating acoustic energy. Due to the re

This master thesis project has been performed in cooperation with TAC, a building automation company in Malmö and the Department of Automatic Control at LTH. TAC has experienced problems for some time with their PID controllers. This master thesis has therefore investigated the use of PID control at TAC, the problems with the existing controllers. The thesis also describes a new PID controller tha

Clarifying the mechanisms maintaining atrial activity during atrial fibrillation (AF), still remains as a relevant topic. The purpose of this master thesis is to apply correlation analysis and system identification methods to study spatial and temporal propagation of atrial activation along coronary sinus (situated in the posterior left part of the heart, in the groove between left atrium and left

This rapport investigates the transmitter of the Ericsson Bluetooth radio. The open loop modulation scheme of the existing design is theoretically very simple but difficult to implement with available components. Frequency drift of the carrier is a common result of open loop modulation. This work therefore investigates an idea of frequency regulation where the regulation is active during modulatio

The report describes the development of a global model of a simple gas turbine in order to simulate the dynamic behaviour. The Modelica language is used for the creation of the model. The model is based on the evaporative gas turbine located in the Department of Heat and Power Engineering in Lund. This turbine was run as a conventional turbine before including the heat exchange and the evaporative

This project considers a special class of aero-dynamics of two different underactuated systems. The two systems under consideration are the Pendubot (actuator at the hip) and the Acrobot (actuator at the knee). The main objectives are to show stability and periodicity of the two systems. The next step is to change the zero-dynamics such that resulting periodic orbits produce walking gait patterns.

This thesis in Anthropology researches the identity of Macedonians in the wake of a controversial name change to solve a long standing dispute with Greece. The dispute is based on rivalring historical narratives and the legacy of antique king and conqueror Alexander the Great of ancient Macedon, a region currently shared by Greece and the newly renamed republic of North Macedonia, who both claim d

Problemområde: Hållbar turism har ett tydligt fokus på den miljömässiga hållbarheten, vilket har bidragit till att den sociala hållbarheten har blivit bortprioriterad. Det finns olika tolkningar av social hållbarhet vilket medför svårigheter för aktörers engagemang inom besöksnäringen. Detta tyder på att en större förståelse för social hållbarhet behövs. Syfte: Vårt syfte handlar om att bidra til

To find approximate solutions to initial value problems (IVPs) one can use a wide range of numerical methods. A special group of IVPs referred to as stiff, can be numerically solved by a chain of methods, beginning with an implicit method then Newton's method and last, General minimal residual (GMRES). For GMRES to be more time-efficient, we need to apply a preconditioner to the system of equa

The need for sustainable solutions to the negative state of the Earth is urgent. Ethical choices need to be made and humanity’s endowed imagination needs to be employed to find creative ways ahead. Literature has a potential to open minds and challenge perceptions, which is necessary to activate the creative imagination needed to find visionary solutions. This analytical research paper explores ho

This is a study of uncertainty in the corporate setting from the perspective of individual employees. While some interviewees talk about accepting uncertainty as an unavoidable state, others tell stories of dread and anguish, associated with instability in the work environment. This research shows how uncertainty as a stress inducing factor can affect both productivity and employee wellbeing, by r

Ett uråldrigt hus med murkna tegelstenar som är täckta med mossa träder fram ur mörkret. Murgrönan sträcker sig över fasaden och döljer de tomma fönstren. Ett litet torn med spetsiga spiror höjer sig över taket och bryter byggnadens redan bristande proportioner. Ett stenvalv inramar en massiv träport med excentriska inristningar och förskräckliga maskaroner. Dörrens groteska portklappar är orörda.The aim of this thesis is to analyse the motif of the haunted house in Aurora Ljungstedt’s Hin Ondes hus (1853) and Mats Strandberg’s Hemmet (2017). In order to compare the motif in these two Swedish novels, Edgar Allan Poe’s short horror story “The Fall of the House of Usher” (1839), which works as a frame for my comparative study. In this thesis, I try to analyse and interpret and Hin Ondes hus

Behövs kemiska bekämpningsmedel inom jordbruket? I Sverige finns ekologiska jordbruk, detta betyder bland annat att kemiska bekämpningsmedel inte används för att bespruta grödorna inom dessa jordbruk. Ekologiska lantbrukare använder sig istället av biologisk kontroll, vilket betyder att naturliga rovdjur till skadeinsekter introduceras i jordbrukslandskapet för att äta skadeinsekterna. För att unChemical pesticides have long been used to keep crops free from pests, but in modern agriculture biological control is viewed as a viable alternative to pesticides. The concept of biological control is to implement predators that feed upon the pests. It can however be difficult to follow the effects of the biological control in the field, which is why a theoretical mathematical model has been desi