At the department of Electronic Warfare Assessments at the Swedish Defence Research Agency in Linköping one of the activities is modelling and simulation of the duel between a robot and a target. The aim with this Master's thesis is to develop a simulation model of an hovering helicopter. First a theoretical description of the forces and moments acting on an helicopter is given. Then the equations of motion are derived. These equations are simplified to be valid only for a hovering helicopter and the result is a mathematical model.

In the 1960?s, Paul Hersey and Ken Blanchard developed a theory called Situational Leadership. Situational Leadership is a model where the leader analyses the needs of the situation and the needs of the people to be led. After analysing the situation, decision is made on what leadership style to adopt. The Situational Leadership model was developed in a company environment.

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 analyze the view on sexuality held by Sweden?s first woman doctor Karolina Widerström, by using ideologycritical textanalysis on the written scriptures of dr. Widerström that focus on sexualpolitics. In doing this I use the theory of speech by Foucault. In this study I focus on Widerström?s scriptures, what she wrote about, how she wrote about it but also what she couldn't write due to the historical context and how omission can still speak of power.

AbstractObstacles or opportunities? ? A study of the experience of collaboration of social welfare secretaries and school staff.The purpose of this study is to illustrate the importance of the work with children and youth through the joint efforts between different authorities. The study deals with the collaboration between the social services and schools in the Ludvika municipality. The objective of the study is to investigate how teaching personnel and headmasters in compulsory schools and the social welfare secretaries in Ludvika, experience the collaboration, and how this works. On the basis of the objective, we have formulated some relevant questions; To what degree are schools aware of the model of collaboration, which is the basis for collaboration within the municipality, and are there any differences in awareness between different categories of employees? Other questions deal with differences in how the social services and schools experience the collaboration, discrepancies between different schools in this regard and if the respondents? experience any obstacles and/or opportunities by the collaboration.Collaboration is, and has been, a pressing issue for a long time in the public debate.

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 purpose of this thesis is to examine which role public libraries play or could play within bibliotherapy. The study is based on qualitative interviews with five librarians who, in one way or another have experienced bibliotherapy activities. Further, we have interviewed two treatment assistants and one counsellor, who have cooperated with the librarians, to get their view. We have used the following research questions: Which bibliotherapeutic activities, if any, are pursued in public libraries in Sweden, and how do they look upon bibliotherapy? What role do public libraries play/could play within bibliotherapy? Ever since the term bibliotherapy was coined in the beginning of the twentieth century, the definition has been under debate. We have identified four main subjects of discussion.

This master thesis deals with steel girders subjected to patch loading caused by concentrated moments. There exist no good methods to calculate by hand the ultimate resistance for this load case. In ?tunnplåtshandboken?, (Handbook for sheet metal, which is published by SSAB), one calculation method is presented. It?s however fairly difficult to use, because of many calculation steps and many graphs.

This study analyzes the political view of criminality and crime politics in three political parties in the Swedish parliament, Socialdemokraterna, Folkpartiet and Moderaterna. The study seeks to describe which kind of view these parties present on the criminality in our society. The material for this study is the ideologies that the parties descend from which are, socialism, liberalism and conservatism, the political programs of these three parties have also been studied as well as the parties proposals, political documents in the Swedish parliament. The current public debate shows that the crime politics is an attractive question and the parties may seem to have similar proposals on how to lower the criminality in our society. The theory that has been used to describe the results of the study is ?actors and structures? and the results are related to this theory as well as the theory has been used as an instrument to explain and sort the material and the results.The results of the study show that the parties are different in their views on criminality as a problem in our society.

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 point in this diploma work lies to a beginning on analysis of the existingmodel of WoodEye scanner. The analysis aims to forming a view and understanding ofhow the scanner is designed and how it functions, and certain conditions around thescanner. On the basis of the result from the analysis and obvious criteria, has a numberconcept proposals been put forward. The concept proposals has then been evaluated andbeen compared with current concept, obvious criteria and compared to each other. Thebest proposal has then been developed far to a completed concept..

Driving simulators are a very important part of the research that is done at VTI. Enhancing the realism and creating a better driving experience in the simulators are very important and an ongoing work process for the engineers and researchers who work with the simulators. This project has been done as a part of this developing process and the purpose is to enhance the realism of the rear-view mirrors.Simulating realistic rear-view mirrors has been demanded, not only from the researchers at VTI, but also from car and truck manufacturers. To achieve a realistic mirror view a method to measure and parameterize real mirrors has been developed. The code for the existing graphics system has also been redone to be able to handle the new types of mirrors introduced..

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.

The aim of this thesis was to study the view on workplace health promotion among leaders in elderly care, to see how their views can influence employee health. The research questions of this study were: How do leaders in elderly care define the term health? What conditions do leaders in elderly care experience that they need to maintain or improve employee health? How do leaders in elderly care experience their role in workplace health promotion?The thesis is done with a qualitative approach and is based on six partly structured interviews with leaders of care homes within Stockholm municipality. The results from the interviews were analysed against Aaron Antonovskys theories about the salutogenic model and sense of coherence as well as with previous research. The result from the study showed that the leaders´ had an awareness of the meaning with health promotion, however, they had not reached the stage where they implemented the health promoting thoughts in their actual work with health.