Ever since it was first introduced in an article in the Journal of Finance 1952, Harry Markowitz? mean - variance model for portfolio selection has become one of the best known models in finance. The model was one of the first in the world to deal with portfolio optimization mathematically and have directly or indirectly inspired the rest of the world to develop new portfolio optimization methods. Although the model is one of the greatest contributions to modern portfolio theory, critics claim that it may have practical difficulties. Partly because the Markowitz model is based on various assumptions which do not necessarily coincide with the reality.

The purpose of this essay is to state a fundamental model which can describe the sounds of the city, emphasizing on its rhythm. The essay is based on a theoretical study that deals with essential elements to describe a soundscape. The theories presented are founded on R. Murray Schafer's theses about soundscapes, Bert De Coensels theses about rhythmical sound patterns and Ambjörn Hugardts view on rhythm. The model that is presented stresses the importance of a multidisciplinary perspective when one attempts to understand and describe a soundscape.

When a helicopter is flying, the dynamics vary depending on, for example, speed and position. Hence, a time-invariant linear model cannot describe its properties under all flight conditions. It is therefore desirable to update the linear helicopter model continuously during the flight. In this thesis, two different recursive estimation methods are presented, LMS (Least Mean Square) and adaptation with a Kalman filter. The main purpose of the system estimation is to get a model which can be used for feedback control.

The aim of this bachelor?s thesis is to gain deeper knowledge about how librarians in public libraries in Sweden view theirprofessional role with regard to the last decades of change in the library field. Especially concerning the technical evolution and towards a higher user orientation and market mindset, and in which ways this has influenced the librarians everyday working tasks. A particular focus has been placed towards the reference transaction, the use of computers and e-media, and the stock development. We believe that there currently is a changeover, from the libraries traditional line of function, towards them as more of service institutions.The method used in this study for answering the research questions and to gather empirical information is semi-structuredinterviews.

This thesis will address a problem concerning availability of information systems at an enterprise within the financial sector and its external suppliers, so called trusted third party. The information system resides on the internal network of the enterprise and must be available to both employees of the enterprise and the trusted third party simultaneously. This contradicts the company policy which disallows third parties access to the internal network. The HAVECA-model introduced in this thesis provides a framework of methods, each solving a sub problem identified in the model. The identified methods are hardening, verification, control and assurance, together supplying a method for continuously securing the internal network against a trusted third party.

Digital preservation is a relatively new subject to Swedish archives. Alhough computers have been used for a long time, preservation has been made on paper and stored on shelves. These days a lot of cities in Sweden have investigated how to best secure the digital information for the future through electronic archiving, e-archives. One option is to hand in the information as soon as possible, but to let the producer keep the information ownership yet some time. The idea is to let the producers of the information answer questions and hand out material, since they are more competent on their field.

The main purpose of this thesis is to investigate hospital librarians understanding of their professional role in working with children. Two different aspects of the professional role were focused on; professional knowledge and ethics. The following research questions were posed: - How do hospital librarians experience their professional role in working with children and young people? - What is regarded as professional knowledge content for hospital librarians in working with children and young people? - How do hospital librarians view ethical aspects in working with children and young people? The issues have been addressed through qualitative interviews with seven hospital librarians. We have used phenomenography which is both a set of theoretical assumptions and a methodology.

The purpose of this Master thesis is to examine and describe dog breeders? information activities. Questions posed in this study are:? What are the information needs of dog breeders?? How does the dog breeder seek and use information?? How can the relationship between serious leisure and information activities be described?The theoretical framework consists of the sociologist Robert A Stebbins? theory about serious leisure. The study is based on a qualitative methodology.

The aim of this Masters thesis is to examine how the image of the girl and her environment in the Swedish youth literature has changed during the 1980s to the 2000s. We have focused on how the girls creates gender in fiction. The introduction chapter in this essay covers a short history over Swedish youth literature and how the Swedish youth culture has developed, followed by a description of how the girl in the real world relates to gender. The books we have chosen are written by Swedish authors and the plot partakes in Sweden with female protagonists. We decided to do a close-reading of the novels and analyse them by an analytical model, consisting of several questions.

There are widespread discussions about the use of retouched models in media, ranging from bloggers to legal decision-makers. Research shows that there are negative psychological effects on especially females being exposed to idealized, retouched model images. The purpose of this paper is to explore the effects of using retouched models in advertising from a marketing perspective, based on attitudes, perceived quality and purchase intentions.Based on theories about attractiveness, halo-effects and social comparison, an experimental study was done, investigating the different responses on above mentioned parameters to advertisements showing either retouched model images or non-retouched model images. Initially it was also tested if the retouched models were seen as more attractive than the non-retouched models. The results showed almost no differences between the reactions to the advertisements with retouched models compared to the advertisements with non-retouched models, when all respondent groups were analyzed together.

This bachelor thesis, written as a part of the European Studies at Gothenburg University, is concerned with the European Unions? (EU) climate political governance in their both climate- and agricultural policy, and in particularly the question whether it is sustainable. This thesis intends to problematize if it is possible for the EU to continue to pursue its current agricultural policies, while at the sametime maintain its role as a sustainable actor on the global arena. The framework of theEUs? climate policy governance disciplines this analysis.

The purpose of this study explains the relationship between corporate governance and the auditor's role in Swedish family firms with the definitions micro, small and medium sized enterprises (SMEs) and how this relationship is affected by the firms strategy. The study is based on a survey sent out to 3000 Swedish SMEs, of which 280 responses from family firms could be used. Our findings showed that the auditor in the family firms didn?t have a specific role or contributed added value to the firm, and that the strategy didn?t affect the outcome. Furthermore, we found correlation between the perceptions of the auditor's role and added value depending on the family firms type of corporate governance.

This thesis examines how role-playing games can be used as an educational tool in after-school programs and identifies the challenges and opportunities perceived by both students and teachers. The study is based on qualitative methods, with interviews with after-school teachers and children in after-school programs with their observations of role-playing activities in a municipality. The results show that role-playing games promote social development, creative thinking, problem-solving, and language development. Students reported increased motivation and engagement, while teachers observed improved relationships and an inclusive environment where students could explore different roles and perspectives. The research links these findings to previous studies that highlight the potential of role-playing games to develop empathy, collaboration skills, and critical thinking (Daniau, 2016; Trespalacios et al., 2011; Suryani et al., 2020). Furthermore, our findings support the curriculum goals of student influence and situational learning, emphasizing the importance of students' own initiatives and responsibility in educational activities (Lgr22, 2022). The study also identifies challenges, such as teachers' uncertainty about introducing and leading role-playing games due to a lack of expertise.

Rimaster Kisa AB is a member of the Rimaster Group, the corporation was bought from Samhall AB in January 2007. The corporation is producing mechanichs needed by the Rimaster group as well for external costumers. Samhall AB is now functioning as a provider of labor for Rimaster Kisa, as the company is hiring personnel from Samhall AB. The company has earlier have had problems with their lead times being far too long. This has resulted in that the management decided to invest in a new edging press.

The aim of this paper is to study in which contexts Muslims and Islam are represented in newspaper- articles in the Swedish press. The research questions are formulated as follow: In what contexts are Muslims and Islam represented in Aftonbladet and Dagens Nyheter during the years 2011-2013 ?Does the newspaper-articles in Aftonbladet and Dagens Nyheter reflect open or closed attitudes about Islam?  My material compromises twenty-five newspaper- articles from the newspapers Aftonbladet and Dagens Nyheter during the years 2011-2013. The material became a subject for qualitative content analysis. This resulted in four categories, the categories were formed from the content of the newspaper-articles. The categories are: (1) Violence / Terrorism, (2) Extremist / Fundamentalist, (3) Islamic god´s state / government / Islamism and (4) Others.