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.

IntroductionSuccessful training is a key for athletes to make progress in their development. Training must not just involve overload, but also must prevent the combination of excessive overload plus inadequate recovery. Athletes can experience short-term performance decrement without severe psychological or lasting other negative symptoms. Too much hard exercise or too little sleep can cause overtraining, a condition in which the subject can prevent to be away from the sport for several weeks or months. Previous studies have detected that it is important to avoid overtraining.

Vi undersöker huruvida de två teorierna Pecking order och Trade-off gemensamt kan förklara utformning av kapitalstruktur och hur beslut gällande denna ser ut hos svenska börsnoterade företag. Vi menar att den aktuella kapitalstrukturen är en konsekvens av den historiska utvecklingen inom företag, där tidigare års finansiella över-/underskott leder till dagens kapitalstruktur och att asymmetrisk information och transaktionskostnader gör att intern finansiering är att föredra framför extern. Företag ser dock fördelar med viss skuldsättning, vilket bidrar till att företag sätter upp en målkapitalstruktur i början av aktuell period. Företags benägenhet att justera sin kapitalstruktur mot denna målkapitalstruktur varierar beroende på vilken situation företaget befinner sig i och olika anpassningshastigheter uppstår till följd av att vissa situationer föredras framför andra. Vi undersöker sambandet mellan målkapitalstruktur och finansiella över-/underskott och hur detta påverkar företags förändring i kapitalstruktur.

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.

AbstraktDet finns blandade åsikter om att en grad av rörlighet över det normala skulle vara främjande eller hämmande för prestationen och därför var syftet i denna studie att mäta rörlighet och den maximala hoppförmågan hos gymnaster, cheerleaders och individer som utövar parkour för att undersöka om rörligheten har någon betydelse för spänst/ explosivitet. Undersökningsgruppen bestod av 15 friska deltagare varav 8 män och 7 kvinnor i åldrarna 18-32 år. Deltagarna genomförde tre Countermovement jump hopp (CMJ) och static jump där markering gjordes på en vägg för att mäta hopphöjd. Enbens längdhopp mättes också. Aktiv rörlighet mättes i fotled vid både dorsalflexion, plantarflexion och sit and reach (bakre rörelsekedjan).

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 market for security is one filled with great opportunities. The security services companies are numerous and diverse, the Swedish market is dominated by two large companies: Securitas Bevakning AB and Falck Security AB. In this study we have focused on the bigger of the two, Securitas. This report describes and analysis the security service branch and its surroundings in an involved manner. The target group of the result is mainly people within the security branch.

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.

Background: It has been a common perception in the media in recent years that external shopping malls extinguish the trade in Swedish downtown areas. Factors that promote external shopping malls are that customers become more and more indolent and more people buy cars. Despite this fact, downtown areas have a great deal to offer when it comes to creating a pleasant atmosphere. Furthermore, customers are becoming more demanding and want something extra while doing their shopping. More and more shopkeepers therefore realize the importance of events as an instrument to offer experiences to the customers.Purpose: To investigate whether shopkeepers in downtown Linköping consider the external shopping mall in Tornby a competitor or not and, if so, in what ways the trade in the downtown area has been affected by Tornby.

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 Vaxholm conflict was initiated when the Swedish Trade Union for Construction Workers shut down a construction site in order to prevent a Latvian construction company to build a school after the two parties had failed to agree upon a collective agreement in compliance with Swedish regulations. An emotional public debate followed that resulted in a discussion of the proposal for the Services Directive of the EU, based upon the country-of-origin principle. In this thesis we will analyze whether the country-of-origin principle or the country-of-destination principle is best suited to capture the gains-of-trade that the common market hoards and improve welfare within the EU. We conclude that the country-of-origin principle is the more apt of the two, though it leads to some short-run costs such as structural unemployment. But these will be more than outweighed by the gains in aggregate welfare for the EU in the long run..