The purpose of this thesis is to examine whether the concept of permanent establishment, as defined in Article 5 of the OECD Model Tax Convention on Income and Capital, is applicable to electronic commerce and if so whether the current definition is able to appropriately deal with the challenges of electronic commerce.In 2003, the OECD added a new section to the Commentary on the Model Tax Convention on Article 5. The new section is a clarification on the application of the permanent establishment definition in electronic commerce.The current definition of permanent establishment in the Model Tax Convention relies on the physical presence of a foreign corporation as the threshold for source taxation. While the current definition, prima facie, might be applicable on electronic commerce, the highly mobile nature of electronic commerce might affect the current revenue distribution equilibrium between states..

This thesis primarily includes a study on whether companies can develop a mathematical activity that supports students' motivation in mathematics. The work was done together with Midroc Electro, a company that pays attention to the difficulty of recruiting and therefore was interested in investigating how the business world would be able to contribute.The thesis can be divided into three stages. The first part comprised by a exploration into research on student motivation regarding mathematics as well as numerous interviews with engineers to see how the research findings did fit with Midroc Electros reality. In these studies it became clear that the student who aims for a profession whose education or work requires math belongs to the group of students who primarily manage their studies in mathematics, that is, those that have the greatest motivation to work hard and complete their studies.Research information and interviews were compared and resulted in the thesis second part, Midroc Challenge. An activity where students primarily came to learn about the engineering profession and secondly how mathematics can be used in the engineering profession.

Sahlgrenska Academy at University of GothenburgDepartment of Internal Medicine and Clinical NutritionAbstractTitle: Changes in blood pressure by replacing regular coffee with decaffeinated coffee,in healthy, normotensive subjectsAuthor: Linnéa Adolfsson and Hillevi Pilgren SautterSupervisor: Lena HulthénExaminer: Anna WinkvistProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 ECTSDate: April 12, 2012Background Hypertension is a risk factor for developing cardiovascular disease, which is themost common cause of premature death. Contributing factors to hypertension are genetics,lifestyle and nutrition. Earlier studies have shown that coffee may increase blood pressure.Objective To investigate the scientific basis whether replacing regular coffee with decaffeinatedcoffee would affect blood pressure in healthy, normotensive subjects.Search strategy Searches have been done in databases; PubMed and Scopus in February 2012.Keywords used were: ?coffee blood pressure?, ?coffee cardiovascular disease?, ? kaffeblodtryck?, ?kaffe hjärtkärlsjukdom?, ?coffee and decaffeinated coffee?, ?decaffeinated coffeeand blood pressure?, ?decaffeinated coffee and cardiovascular disease? and ?exchangedecaffeinated coffee?.Selection criteria Studies with healthy, normotesive subjects, >15 years old, BMI < 30, morethan one week of intervention, randomized controlled trails and human trials were included.Only trials using caffeine from coffee versus decaffeinated coffee and studies in English andSwedish were accepted. Exclusion criteria were other interventions such as weight loss, changesin diet, medications or stress tests.Data collection and analysis Studies were selected after inclusion and exclusion criteria.

ABSTRACTThe aim of this study was to describe various methods of treatment and effects of treatment of ADHD, and to investigate wheater there is an association between adults with ADHD and obesity. Method:  Literature review. Twelve quantitative scientific articles were found in the data bases PubMed, Cinahl and MedLine.  Result: ADHD is a cognitive impairment that can lead to serious complications such as obesity. Studies show that drug treatments of adults with ADHD have positive effects in terms of reduced symptoms, increased efficiency and improved quality of life, but drugs can also cause side effects in form of loss of appetite and insomnia. For adults with ADHD and obesity drugs that affect metabolism have a significant impact on patients ability to lose weight.

In this essay the author has chosen to analyze the similarities and differences between some of the northern Europe?s late Mesolithic and Neolithic cultures. The research is of a processual standpoint and the information is mainly gathered from secondary sources as well as ethnological studies. The material collected has been analyzed in both a processual and a post-processual manner to most accurately study the foundations of the three primary theories describing the Pitted Ware Culture?s origin.

The northern province of Sweden has in both literature and film been depictured as something foreign and mythical, unlike the rest of the country. It has been my purpose to show in this essay that the systematic categorization of Norrland and its literature reveals multiple criteria known to define the colonial era. By reading the novel Stallo by author Stefan Spjut with postcolonial structures in mind I aim to show how the author uses Swedish mythology and through the presence of The Other criticizes colonial structures in place to this day. By examining the gothic atmosphere I intend to indicate how the trolls in the novel figures as both a horror element as well as a representation of nature itself. It is my belief that the author by further reinforcing the mythological in relation to Norrland addresses the problem at hand.

Syftet med studien är att undersöka hur elever i åk 5 uppfattar det egna arbetet i skolan. Syftet inbegriper också hur samma elever upplever deltagande och inflytande i det självständiga arbetet. Vi har använt oss av en kvalitativ forskningsmetod där vi intervjuat 10 elever på två olika skolor. I vår studie har vi funnit att individualisering är något som präglar dagens undervisning i skolan i mer eller mindre utsträckning. Detta symboliseras ofta av ett arbetssätt vid benämningen eget arbete där eleven får arbeta självständigt.

Sahlgrenska Academyat University of GothenburgDepartment of Internal Medicine and Clinical NutritionAbstractTitle: The relation between alcohol and abdominal obesityAuthor: Anna Eriksson och Karin EdenholmSupervisor: Fredrik BertzExaminer: Ingrid LarssonProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: May 30, 2013Background: Abdominal obesity is a part of the metabolic syndrome, which has a worldwideprevalence of 20-25 %. The problem with abdominal obesity is the accumulation of visceraladipose tissue, which is an important risk factor for cardiovascular disease. Alcohol haseffects on metabolism, and can also lead to an increase in total energy intake; these twofactors can lead to an increase in accumulation of visceral fat. Besides this there are studiesthat show that a moderate alcohol intake could be good for your health. The context gets morecomplicated since different studies have shown contradictory results concerning theassociation between alcohol, different types of alcoholic beverages and measurements ofabdominal fat.Objective: The objective of this article review is to assess the evidence of whether alcoholintake is associated with accumulation of visceral adipose tissue, using the measurementswaist circumference (WC) and waist-hip ratio (WHR).Search strategy: The databases used in the literature study were PubMed and Scopus.

FYROM has a long tradition of producing wine. Wine production in FYROM is one of the greatest contributors of the agricultural share of their GDP. The aim of the thesis is to see if the wine production in FYROM has a comparative advantage compared to other countries that produce wine and if FYROM is able to sustain the advantage in the future. The countries chosen for comparison are Bulgaria, Croatia, France and Italy. The methods used in the thesis are the Balassa Index and Porter?s Diamond of National Advantage.

The study is quantitative and the purpose was to examine the effects of ethnicity and education on three working-related identities and striving among 80 participants. The participants consisted of foreign-born people living in Sweden and people who were born in Sweden, with different educational background. Each groups consisted of 20 participants. The result showed that the highly educated participants had higher professional identity. The participants with lower education level had a stronger colleague identity than the higher educated participants and the Swedish-born participants had a lower identity.

About 10 % of the adult women population in Sweden are treated annually for urinary tract infections. The increasing bacterial resistance towards antibiotics is classified by WHO (World Health Organization) and ECDC (European Centre for Disease Prevention and Control) as one of the greatest treats for human health in a global perspective. To find alternatives scientists are studying the possibility to use probiotics to reduce the frequency of recurring urinary tract infections. This literature study examines five randomized double blinded placebo controlled studies where different strains of Lactobacillus have been used as a prophylactic to women suffering from recurrent urinary tract infections and bacterial vaginosis. Overall the studies do not display enough promising results to recommend the use of probiotics as a prophylax or cure..

This study aims at examine if an Europeanization is affecting the bilateral diplomatic relation between Sweden and Italy as managed by the national embassies. The questions asked to pursue the aim are; how the bilateral diplomatic work is managed between the countries, are there any signs of Europeanization within this relation or is it still contingent on intergovernmental principles? In this study an analytical model is created and used to analyze how the bilateral diplomacy between Italy and Sweden is managed through the embassies. The discussion on top ?down Europeanization by Tanja Börzel is central to the development of the analytical model.

Sahlgrenska Academy at University of GothenburgDepartment of Clinical NutritionAbstractTitle: The effect of nutritional treatment on functional recovery after stroke, a systematic reviewAuthor: Ingrid Blankenau and Amanda LindbladSupervisor: AnneMarie GrönbergExaminer: Anna WinkvistProgramme: Dietician study programme, 180/240 ECTS Type of paper: Examination paper, 15 hpDate: April 13, 2011Background: Every year 30 000 people in Sweden suffer from stroke. This costs society about twelve billion SEK. Many stroke survivors experience functional impairment which may lead to difficulties for them to meet their nutritional needs. Nutritional treatment is important in the recovery process after stroke as malnutrition increases the risk of complications.Objective: To investigate the possible effect of nutritional treatment on functional recovery after stroke.Search strategy: The search was conducted in the databases PubMed, Scopus and Cochrane by using the English keywords stroke, nutrition, rehabilitation, functional outcome, recovery, acute stroke, ischemic stroke, ischemic acute stroke, nutrition therapy, brain hemorrhage, functional recovery and nutritional rehabilitation.Selection criteria: Studies published before 2001 conducted on human subjects who suffer from stroke where they measured functional capacity and did a nutritional intervention, written in English, Swedish or Norwegian, and did not have to be requested from the library.Data collection and analysis: A systematic search was performed in PubMed. Studies which had an interesting heading were examined and abstract read.

AbstractTitle: The effect of caffeine on performance during resistance training ?A systematic overviewAuthor: Amanda Jonsson and Erica BenderSupervisor: Mette AxelsenExaminer: Anna WinkvistProgramme: Dietician study programme, 180/240 ECTSType of paper: Examination paper, 15 hpDate: 2015-03-31Background: Products with high content of caffeine has in recent years become popular for optimizing physical performance. Caffeine affects mechanisms in our body which can be beneficial to perform better during exercise, but the theories have not yet been systematically reviewed.Objective: The purpose of this review article, is to examine the acute effect of caffeine intake before strength training on athletic performance with the outcome muscle endurance.Search strategy: A systematic literature search in databases PubMed, Scopus and Cochrane using keywords: ?Caffeine?, ?strength?, ?muscle?, "resistance training", "muscle strength", "strength training", "athletic performance", ?repetitions to failure?, ?muscular endurance? and ?endurance training?.Selection criteria: Healthy subjects, 16-50 years old, with experience in strength training. Studies with a caffeine intake > 5 mg/kg body weight, which participants performed dynamic strength exercises on a weight > 60% of their 1 RM.

Investigations concerning adolescent mental health shows a negative development. Many pre-vious studies have focused on young women's mental health. Therefore, the aim of this study was to investigate young men's (17-19 years) experience of their mental health. Qualitative interviews were used as a method. The participants were six young men who all go to high school in a major municipality in the county of Gävleborg.