Search results

Fully implicit Runge-Kutta methods play an important role in the numerical integration of stiff differential equations. Radau IIA is the most commonly used fully implicit method due to its good theoretical performance. However, Radau IA and Lobatto IIIC might also be suitable for different problems. These three methods are constructed using simplified order conditions that ensures specific integra

Popular Abstract in English The energy demands of human society are huge and will keep increasing for the foreseeable future. Fossil fuels have largely been able to meet those demands for the last centuries, but issues of sustainability and global warming have brought about a need for alternative energy sources. The emission of the sun supplies earth with an energy that is many thousand times largOrganic solar cells employing fullerenes blended with conjugated polymers as the main light-absorbing material have achieved power conversion efficiencies exceeding 10%. They hold promise as an alternative energy source with many advantages in terms of long-term sustainability and reduced greenhouse gas emissions. Detailed information on the electronic and geometric structure of the molecules invo

The wildlife park Kolmården in Norrköping, Sweden, asked for a device that could visually feedback how dolphins use their ultrasound signals while echolocating objects. By recording the sound from the dolphin, process the sound and then create a visual feedback by having LED's flash in different frequencies, depending on the distance between dolphin and device. The purpose of the device is havVisual response to dolphin echolocation It is well known that dolphins use echolocation but how about watching what actually happens? A device that shows the audience some of the information contained within the emitted ultrasonic waves. It is a small fish look-alike device that is created to simulate how the dolphins behave while hunting. By picking up the echolocation signals sent out from the

While the energy transition of the EU housing stock is now being intensified with the launch of the Renovation Wave, economic inequalities are increasing in many OECD countries, which has effects on housing-related inequalities and the demand of affordable housing. The Renovation Wave is thus an opportunity to improve housing quality for low-income households, but also entails risks for increased

Renewable energy pursuit and implementation are undoubtedly one of the most important steps in sustainable development across the globe. So far there are several developed high-income countries in the world, that have replaced their fossil fuel-powered electricity systems for renewable energy technologies, however, most of the world still relies on non-renewable energy sources. This research will

Popular Abstract in English The two most used building materials in harbor structures are undoubtedly steel and concrete. These two materials are often combined in the structures of wharfs and quays where most steel sheet pile walls have cap beams of reinforced concrete. The degradation processes of these structures must be taken into account both when designing new structures and when inspecting The two most used building materials in harbor structures are undoubtedly steel and concrete. These two materials are often combined in the structures of wharfs and quays where the steel sheet pile walls often have cap beams of reinforced concrete. The degradation processes of these structures must be taken into account both when designing new structures and when inspecting existing harbor structu

The purpose of this study is to examine how the capital structure in swedish listed firms changed during the Corona-crisis. The study focuses on the years 2017-2022 to compare before and during the crisis. The study also uses six control variables to capture changes in capital structure. To compare capital structure, the study uses three types of debt ratios, total, short and long term leverage. T

The district heating sector in Sweden is today facing several challenges due to competition from other heating alternativesas well as decreasing heat demand in buildings. To increase its competitiveness, the district heating companieshave to find ways to keep their production costs at a more or less constant level. One way of doing this is to increasethe efficiency of the district heating systems.The district heating sector in Sweden is today facing several challenges due to competition from other heating alterna-tives as well as decreasing heat demand in buildings. To increase its competitiveness, the district heating companieshave to find ways to keep their production costs at a more or less constant level. One way of doing this is to increasethe efficiency of the district heating system

Multimedia has become one of the cornerstones of our 21st century society and, when combined with mobility, has enabled a tremendous evolution of our society. However, joining these two concepts introduces many technical challenges. These range from having sufficient performance for handling multimedia content to having the battery stamina for acceptable mobile usage. When taking a projection of w

According to the Euro-barometer conducted by European Parliament in 2016, 57% of Young People in Europe have the perception of being excluded from the society in their country of residence (EPRS, 2016). With rising of anti-immigrants sentiments across the globe and increasing discourse on failed integration, one of the most affected groups are young migrants (MUCF, 2016). Differently from existing

This thesis investigates if it is possible to use the dynamic braking test method together with sensorless control. A literature study is conducted about different sensorless methods in order to find methods that fits the application. From the literature study are two sensorless methods implemented and simulated in Matlab Simulink. The results from the simulations shows that when using the two met

This masters thesis is about the burden of proof and evidence requirement when a conflict occurs between an adviser and a receiver of an advice. The situations I will focus on are tax advices and financial advices. The most important source of information is court decisions, but relevant legislation will also be looked into. From jurisprudence I will find the underlying causes and use them to give

Barbaricum 070302 Den andliga makten Entré Reception The Spiritual Beliefs Vapenoffer War Sacrifies Soldaten The Soldier Den Världsliga makten The Worldly Dominion Eldstaden The Fireplace Uppåkratemplet The Uppåkra Temple Bägaren och skålen The Beaker and the Bowl Guldgubbarna The Gold-Figure Foils Den nakna gudinnan The Naked Goddess Porten The Gate Information Information Keramiken The Ceramics

https://www.historiskamuseet.lu.se/sites/historiskamuseet.lu.se/files/2023-09/Barbaricumboken%20pdf%202007.pdf - 2026-05-26