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A model of the Swedish power plant Mälardalen Energi, developed by Solvina AB was simulated in Dymola with different types of control strategies in order to evaluate if they could improve the operational flexibility of the plant and, thus, its ability to deliver frequency control to the Swedish power grid. Several different control strategies and process modifications were tested and compared to p

This paper studies volatility prediction on OMX Stockholm 30, OMX Helsinki 25 and OMX Nordic 40. The models used are a historical variance model, an exponentially weighted moving average model and three models from the GARCH family. These are GARCH(1,1), EGARCH(1,1) and GJR(1,1), with normal and t-distribution respectively. The volatility for 2008-2013 is forecasted with a rolling window technique

I samband med det rekordstora antalet asylansökningar år 2015 införde regeringen Lag (2016:752) om tillfälliga begränsningar av möjligheten att få uppehållstillstånd i Sverige, den så kallade tillfälliga lagen (TL), som syftade till att minska antalet asylsökande till Sverige. En ventil infördes i lagen som innebar att uppehållstillstånd skulle beviljas om det annars skulle strida mot svensk konveIn connection with the record amount of asylum seekers in the year of 2015, the Swedish government introduced the so called temporary law with the purpose of reducing the amount of asylum seekers in Sweden. A final chance to be granted a residence permit was if it would violate any of Sweden’s convention commitments to deny the permit. In MIG 2018:20 the Supreme Court of Migration concerning the

Background/Problem Description: The purpose of project management is to keep track, organize and assure that the specific goal of a project will be accomplished before the project ends. Without a project management model, it is hard for an organization to monitor and fulfill the purpose of project management. Therefore, ESSIQ AB believes it would be beneficial to have a project management mode

The construction sector is responsible for around 40 % of all generated waste in Sweden and is also responsible for around 21-22 % of all carbon emissions. In a sector that is responsible for a substantial part of Sweden’s climate footprint, it’s important to find solutions to the negative effects towards the climate. Much of the generated waste comes from building and demolition waste which ends

The foster care system in Antananarivo, Madagascar is currently transforming, as it reformulates the traditional Malagasy system; ‘Taiza’ into a structural social service. The system faces significant challenges, particularly in gaining public recognition and acceptance. I have explored how social workers in Antananarivo navigate the complexities of child placement decisions in a context where pov

In pursuit of energy efficiency and sustainable development, goals have been set by the EU and Sweden to improve the energy performance of buildings and reduce their environmental impact. Renovating the existing building stock is a path to achieving the energy and climate goals. This study investigates and analyses various retrofitting options for multifamily residential buildings in Skåne, Sweden

Med en ökande åldrande befolkning kommer antalet vårdbehövande äldre med kognitiva funktionsnedsättningar (olika former av demenssjukdomar) att öka. Uppsatsens syfte är att undersöka förhållandet mellan äldre personers självbestämmanderätt kontra deras behov av vård. Vård kan inte ges utan den enskildes samtycke, om inte undantag finns uttryckt i lag. Ett giltigt samtycke kräver att den enskilde As the number of elderly people in the population grows, the number of elderly people who suffer from cognitive disabilities (different forms of dementia) who require care grows as well. The purpose of the thesis is to examine the relationship between elderly people’s autonomy and their need of care. Care cannot be given without consent from the individual unless there are exceptions stated in th

When children are unable to live at home with their biological parents, foster carers become an important part of social care. Our study has been based on the foster carers' perspective. The aim of this study was to investigate the role, influence and duties of foster carers. The method chosen was a qualitative approach with eight semi-structured interviews with foster carers. The interviewees

Lactobacillus reuteri is a probiotic bacterium which when consumed or administered in certain recommended dosages can provide a number of health benefits to the consumer. To have an effect on the consumer, these bacteria must survive until they reach the gut. Process conditions during production of the cells determine their ability to adapt to subsequent environmental shifts during storage and adm

Pallets are the most common tertiary packaging solution with over 80% the world trade currently being carried out using pallets. The most widely used pallet type is the four-way wood pallet which accounts for 86% of the pallet production worldwide and the most common pallet size is the Euro Pallet. A department at Tetra Pak called Additional Materials (AddMat) is mainly using Euro Pallets, which h

Arbetet är utfört åt skogsforskningsstationen Mógilsá som ligger strax norr om Reykjavik. Forskningen inom Mógilsá bedrivs inom delar av eller för hela Island med inriktning inom exempelvis dendrokronologi, proveniensförsök, och studier av insekter. Sedan 1900-talets början har inplantering av exotiska trädarter blivit allt vanligare och i en allt större skala. Syften med inplanteringen är bland aThis study was made in an attempt to give the forest research centre Mógilsá a produced tetratherm map and a better understanding of how topography and temperature influence the growth of two tree species. The digital tetratherm map model, covering the northern part of Iceland, was developed to investigate the correlation between tetratherm and the growth of Picea sitchensis and Larix (sukaczewii

I det här magisterarbetet undersöks om det är möjligt att på ett effektivt sätt dela upp en graf i spanneröar, dvs. öar som uppfyller spanneregenskapen som består i att avståndet mellan två noder via grafens bågar inte får vara för stort i förhållande till det euklidiska avståndet mellan noderna. Att hitta en uppdelning som skapar så få kontaktpunkter mellan öarna som möjligt eftersöks. Ett antal In this Master Thesis the possibility to efficiently divide a graph into spanner islands is examined. Spanner islands are islands of the graph that fulfill the spanner condition, that the distance between two nodes via the edges in the graph cannot be too far, regulated by the stretch constant, compared to the Euclidian distance between them. In the resulting division the least number of nodes con

The goal of this thesis was to explore the conversion of a propeller driven two-seater combustion airplane to an electrical airplane. Four different wing designs were considered. Two variations of Blackwing Sweden AB’s current Blackwing wing (BW), a longer wing (BW-L) and a shorter wing (BW-S), as well as a new wing with a different airfoil (GW). Using Computational Fluid Dynamics the wings were m

Existing pick and place robots are either heavy or have a limited workspace for vertical operations. Since there is no robot today that are both light and have a good vertical workspace, this leads to a gap in the market. With the use of the laws of physics Cognibotics is trying to fill these gaps in the market, by developing new fast and lightweight robots. These new robots are designed to have a

Det åvilar samhället ett stort ansvar att skydda våldsutsatta barn. Att bevittna våld kan vara lika traumatiskt för ett barn som att själv utsättas. I januari 2022 konstaterade Jämställdhetsmyndigheten, efter en granskning av 814 tingsrättsdomar i mål om vårdnad, boende och umgänge, att uppgifter om våld eller andra övergrepp mot barn, förälder eller partner förekom i 64 procent av de granskade doSociety has a great responsibility to protect children from violence. For a child, it can be as traumatizing to witness violence as it is to be the victim of it. In January 2022, the Swedish Gender Equality Agency found, after reviewing 814 judgements from the district courts concerning custody, residence and contact, that allegations of violence or other abuse could be found in 64 percent of the

China is one of the leading providers of seafarers in the world. Following it, cases involving violation of seafarer wages occur occasionally. As for the measurement in settling the disputes, a seafarer can choose from the following: reconciliation, mediation, labor arbitration, law suits, and etc. If a law suit is chosen by a seafarer, he has to know how to protect his rights and interests then.