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.

AbstractThis essay consists of an analytical study of three present-day Swedish films depiction of teenage life. From these films we like to see how youths are described, what attributes they are given, in shape of attire and different symbolic items, such as language and body expressions. The essay emphasizes which values that dominates among the illustrated teenage groups and compares it to the values and expectations that we can derive from an adult society. Here we let the school?s main determining base documents, Lpo 94 and Lpf 94, represent the dominating values of the society.Our hypothesis is that media, and also these films, creates images that affects the societies comprehension of teenagers and also how teens see themselves.

I have done a study to see what perceptions held by two principals and four teachers, if adult behavior and attitudes towards each other will affect the climate between the students and put it in relation to the fundamental values of work and policy documents. I have also examined how they describe their work environment in their daily work and how they work to combat bullying.I have used qualitative interviews as a method to get answers to my questions. The interviews took place at two different schools, in which I interviewed a headmaster and two teachers at both schools. What emerged during the interviews were compiled and processed with aid based on previous research and theories which focus is in a social constructionist approach.The results as it shows in my study highlights a consensus among the interviewees that the personnel group working atmosphere affects the climate between the students and that there is a good understanding of the impact they have. The study also shows that the experience of their work climate affects by how the communication between management and staff looks likes and how many resources there are in the form of personnel.

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.

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 purpose of this essay is to analytically review and discuss architecturalcompetitions, mainly through the general views of a few selected workinglandscape architects, architects and scientists. I have studied the moral and workethicalaspects of using graphical presentations as a mean to draw attention,rather than trying to meet the set program points.My results are derived from e-mail interviews, literature studies and studies ofthe competition entry Stockholmssfären from the competition Stockholmsportenwhich was held in Sweden early 2011.The literature studies have shown that the available literature on architecturalcompetitions and research on the subject is biased towards architecture ratherthan landscape architecture. Worth mentioning is also that there is not a lot ofavailable literature, mainly due to lacking research on the subject.The informants for the interviews were selected based upon their academicmerits and/or experience of working with or doing scientific research onarchitectural competitions. The landscape architects? opinions regardingarchitectural competitions turned out to be in many ways alike ? they seemed tohave a pretty relaxed view of competing in architecture.

Following is a study of fathers 'experiences of balance between work and home life. The method the researchers used was based on qualitative interviews aimed at describing father?s own experiences and values, which affects them. The researchers chose to specifically study situations where the fathers were faced with situations where their children needed to be cared for in the home because of a cold or similar illness since this is a situation that directly affects the time that was meant for work, but now risk being moved to areas of life that the researchers define as home life. This is to see whether the respondents felt that this situation affected the balance between work- and home life.

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.

When professionals meet people from other cultures, there are some problematic issues that may appear, especially when considering human rights. Every individual has the right to live as they choose, and have the right to their own culture and traditions even if they have immigrated to another country. Female genital mutilation is a tradition that violates human rights. In this study we will look at what conflicts of values that professionals can have while meeting clients who have been mutilated. We have made qualitative interviews with four professionals working in a small town in Sweden in an area where many immigrants live.

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.

Användaracceptans är en viktig del i alla systemutvecklingsprojekt och är också en väldigt lättpåverkad variabel för en lyckad implementering. Därför är det viktigt att ha översikt på sådana faktorer som kan påverka användaracceptansen negativt, en sådan faktor är försening. Denna uppsats belyser sammanhanget mellan hur en försening påverkar användaracceptansen. Genom att låta en undersökningsgrupp genomgå en enkät utformad efter Technology Acceptance Model har jag samlat upp en generaliserad åsikt. Resultaten visar att försening som variabel inte påverkar användaracceptansen för fallstudien..