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Integration of fluctuating renewables like wind and solar power is nowadays a hot topic, but this comes at a cost of decreased stability of the power system. The deterioration often translates into so-called spikes and drops in the electricity spot price, very large (even extreme) deviations from the regular spot price, followed by a reversion to roughly the original level a few days later. We use
Fortuna’s Guises: Fortune, Misfortune, and Risk in Early Modern Sweden. This dissertation explores learned conceptions of uncertainty and risk during the period stretching approximately between 1560 and 1720. Previous historical overviews of the ideas about risk hold that pre-industrial societies viewed all worldly happenings as emanations of God’s will or other forces lying beyond human control.
To study and compare the safety of intersection, traffic scientists today typically manually monitor the intersection during several days and count how often certain events such as evasive manoeuvres occur. This is a laboursome and costly procedure. The aim of this thesis is to provide tools that can reduce the amount of manual labour required by using automated video analytics. Two methods for cr
Visual inspection in order to assure quality control is a challenging field that is attracting increasing interest after a long period of silence due to the trust and hope in computers and automation. Human visual inspection is however a challenging area as it requires the designer of the system to take in to account demands and limitations of technical, economic and psychological nature. This st
The Court's refusal to implement horizontal direct effect upon directives may, in some cases, lead to injustice. It can not be considered just and equitable that individuals who do not comply with provisions stemming from a supreme legal order are able to avoid retribution. This situation may be seen as further exacerbated by the fact that public funds are used to finance the shortcomings. Wha
This thesis examines a project that has been conducted at a software development company. The aim is to investigate which problems firms of this kind faces performing projects. We choose a theoretical frame consisting of a modern view on how to manage projects. The view argues that the management of each project has to be adapted to the situation at hand. This theory is divided into two separate s
Barn och föräldrars värderingar, underlag för lösningen på ett växande trafik- och samhällsproblem? Resultat från LTH:s nya examensarbete om barns säkra och trygga skolvägar förväntas kunna ge underlag för att minska problemen skapade genom föräldrar som skjutsar sina barn till skolan. Trafiksituationen vid många svenska skolor har beskrivits som kaosartad och skapat många frågetecken för framtidThis master thesis focuses on safe and secure routes to school and the point of departure is the phenomena that parents take their children to school by car instead of using sustainable alternatives as cycling and walking. This behavior creates a number of problems around schools as congestion and lack of traffic safety. Also the roads that are used for traveling to and from school, experience the
Purpose: The purpose of this study is to examine the role of the perceived servicescape (i.e. color, music, cleanliness, ambient temperature, layout/function and signs/symbols) in influencing customers' behavioral intentions in Chinese fast food restaurants. Methods: In this study, a deductive approach, a quantitative methodology, and a survey research design are adopted. The data is collected
A range of neuroradiological findings has been reported in patients with COVID-19, some mimicking cerebral small vessel disease (CSVD). We present a case of a man in his 50s with severe COVID-19, who was Glasgow Coma Scale 3 and tetraparetic after sedation was ceased in the intensive care unit. Return of consciousness and motor activity was slow. An MRI 1 month after debut of symptoms demonstrated
This paper was part of the ongoing cooperation between the Swedish Civil Aviation Authority and the Department of Psychology at Lund University. The purpose of this study was to develop a self-report measure regarding human factors, for the air traffic controllers to fill out before they start their working shift. This in order to aid the team leaders in their judgment regarding the air traffic co
Recycling of brake pads is a tough but promising work considering the current end of lifecycle. This study assesses the environmental performance of brake pads made up of recycled friction materials in terms of energy use, CO2 footprint and airborne particle number. Energy use and CO2 footprint are calculated with the data from CES Edupack and airborne emission particle number is measured on a pin
Gambling has been suggested as one of the potential mental health consequences of the COVID-19 pandemic. In earlier self-report studies, increased gambling has been reported by a limited proportion of respondents characterized with a high degree of problem gambling. The present study, carried out with the same methodology and in the same geographical setting, around seven months later in the pande
Northeast China, the most important region for commercial grain farming in China, is vulnerable to drought due to high fluctuation in monthly rainfall. Timely, accurate and effective drought monitoring is very essential for securing the output of grain farming. In this study, three widely used drought indices were compared using satellite soil moisture data and their capability for drought monitor
The performance of HVAC equipment, including chillers, is continuing to be pushed to theoretical limits, which impacts the necessity for advanced control logic to operate them efficiently and robustly. At the same time, their architectures are becoming more complex; many systems have multiple compressors, expansion devices, evaporators, circuits, or other elements that challenge control design and
As video and computer games get increasingly more advanced, the immersive experience for the player of these games also follows this trajectory. In these games, one aspect that has been explored to the greatest extent is that of choice and player agency. Often, these choices and acts are of a moral character, whether it be choosing what to do on an ambiguously formulated questline with multiple br
The Amazon rainforest is highly biodiverse and has the largest extent of the remaining intact tropical forests in the world. To this day, undisturbed tropical forests act as a carbon sink by taking up about 15% of anthropogenic carbon emissions per year. However, in the past decades, a declining trend in the carbon sink capacity in the Amazon rainforest has been observed due to increased carbon lo
PurposeIn oculoplastic surgery the eyelid tissue is frequently stretched in order to repair defects after tumor surgery. However, there is a paucity of research regarding how stretching affects eyelids. The purpose of this study was to gain insight into how traction force affects eyelid stretch as well as tissue perfusion, using a laser-based in vivo monitoring technique.MethodLower-lid pentagonal
