This thesis investigates techniques for stealth hydroacoustic communication using spread spectrum. The Swedish naval defense organisations have a vision that all their units should be able to communicate with each other, even between underwater vehicles. But the properties of water makes it a complex channel to use for wireless communications. Radiomagnetic waves have very limited range in water, therefore acoustic waves are used. In this report the basics of wireless communication systems are described including source coding, channel coding, modulation techniques as well as different techniques for spread spectrum.

The aim of this thesis is to analyze and explain the similarities and differences in management control between a private and a public primary care company. A comparative case study was developed based on one public and one private primary care company in Stockholm County Council. The framework of Otley (1999) was used to define and limit the area of management control systems, according to his five factors. For the analysis of the empirical results Hood's (1995) seven doctrines of New Public Management was applied, and customized to fit the purpose of the study. The results indicate that the differences between the two organizations are very limited.

I dagsläget finns ett problem med det fällbara kartbord som används i militära ledningsfordon. Större fokus på säkerhet och nya förhållanden har lett till att ett nytt bord behövs som är anpassat för den nya miljön och användarna. Arbetet har utförts i samarbete med BAE Systems Hägglunds och handlar omutvecklingen av ett nytt fällbart kartbord till det bepansrade bandfordonet BvS10 MkII.Utgångspunkten har varit att skapa ett mer användarvänligt bord som dessutom är billigare och väger mindre. Slutresultatet baseras till stor del av energonomianalys där höjd och lutning på bordsskivan analyserades med hjälp av datorsimulerade människor baserade på antropometriska data. Utöver ergonomianalysen har även ett koncept på fällning av bordet samt en hjälpmekanism till denna tagits fram.

The aim of this paper was to contribute to knowledge about how preschool-teachers work with the development of children?s spoken language in preschool.The study was conducted through interviews with four preschool-teachers working at the same preschool with one to five year old children. Through the interviews I came to learn about the preschool teachers experience concerning their work with development of children?s spoken language.The results show that the preschool teachers used pedagogical tools like songs, movements, rimes, jungles and stories in their work to develop the children?s spoken language. They said that conflicts and exclusion among children in a group could be a result of differences in language skills.

Sun Microsystems chose its own Open Source path by not following competitors in their commitment toGNU/Linux. Sun instead created its own Open Source project from the source of Solaris under the name ofOpenSolaris. The business model of OpenSolaris belongs to the new and more commercially viable OpenSource, referred to as OSSg2. This survey was based on articles on the adoption of Open Source in organizationsand István Orci?s publication Kritiska IT-System.

This master?s thesis deals with the development of the Swedish library catalogue. The thesis primarily has two purposes. Firstly, it describes how the Swedish library catalogue has developed from its first appearance until today. As the Swedish library sector is very extensive the authors have chosen a few catalogues which they have studied more thoroughly.

The Swedish energy companies have several different systems for data collection of the energy consumption of their clients. Often computerized remote meter readers are put in practice in order to register the energy consumption of large companies. The majority of household clients, however, are read off by the assistance of manual methods. Household power consumption is read off once a year. As a result, these clients are not debited for their actual consumption; their invoices during the year are the result of estimations.

This study investigates if, and in that case, how design theory is applied in practice in the web development field. Prior research has focused on methods used in the web development field. We wanted to study the designers role in a web design process by comparing existing designer roles with design theory literature. We did qualitative interviews with two practitioners at two different communication agencies in northern Sweden. Based on our qualitative data and literature review we have concluded that a designer has to devote a lot of energy on requirements engineering in order to develop a clear understanding of the design situation..

Statistics indicate an increase in online shopping. This indication could result in the loss of safety factors for the customer, for example the possibility to physically examine the product, interact with professional store personnel and try the product before purchase ? factors which all could support the customer in her choice of company and product. The purpose of this study is to increase the theoretical knowledge regarding strategies in the area of trust-development between customers and companies. We have chosen to investigate what strategies web based companies apply and how they are perceived by their customers.

Fairtrade is a certification of products that has grown from the criticism of conventional trade. By increasing the focus on the producers? economic and social conditions, poverty can be fought and the producers? voice in the marketplace can be strengthened. Fairtrade City is a certification for municipalities who wish to engage in ethical consumption. The purpose of this thesis is to understand the Fairtrade City concept and how this can be a tool for working towards sustainable development. To be more concise, we want to answer the following questions: Why does Örebro municipality work with the Fairtrade City certification and how can Fairtrade City be used as tool for working towards sustainable development? The thesis is based on qualitative interviews and e-mail interviews with members of the steering committee for Örebro Fairtrade City and on literature studies. We have in our thesis identified Örebro Fairtrade City as a result of 1) that Örebro municipality through Fairtrade City wants to change their surrounding environment by engaging in ethical trade 2) that the surrounding environment effects Örebro municipality through isomorphism regarding its way to deal with sustainable development 3) that the municipality through its work with ethical trade becomes legitimized by their surrounding environment.

During 2009-2010 Sweden participated in an international military operation whose intention, according to the Swedish news media, was to fight Somali pirates. The purpose of this thesis is to study various decisions and documents behind the Swedish efforts, both military and foreign aid, regarding the matter of Somali pirates during the years 2009-2010 and analyze the results using an interpretation of the security-development-nexus-theory. The method used is text analysis based on the hermeneutic idea of understanding and interpretation.The thesis studies the international resolutions and national decisions that lead to the military operations in the Gulf of Aden and also the international strategies and national approaches regarding Sweden's assistance in the development of Somalia. The theoretical section contains an interpretation of the vast security-development-nexus-theory. The concepts of security and development are first presented separately and then collectively in terms of military security, societal security, economic security, regime security and human security.

The amount of information stored on the internet grows daily and naturally the requirements on the systems used to search for and analyse information increases. As a part in meeting the raised requirements this study investigates if it is possible for a automatised text analysis system to distinguish certain groups and categories of words in a text, and more specifically investigate if it is possible to distinguish words with a high information value from words with a low information value. This is important to enable optimizations of systems for global surveillance and information retrieval. The study is carried out using word spaces, which are often used in text analysis to model language. The distributional character of certain categories of words is examined by studying the intrinsic dimensionality of the space, locally around different words.

It is important to work with economic, social and ecological dimensions in order to reach sustainable development. Furthermore, these dimensions are supposed to work opon together. Green Flag´s aim is to process these dimensions in the thematic work in preschool, where children are involved. The aim of this study is to find out how certificated Green flag preschools work with the three dimensions in the education of sustainable development practically and how the children participate in this work. I have used a qualitative semi-structured interview to find out preschool teachers´ thoughts and opinions about how they work with sustainable development and how they make the children involved.

Over the past one hundred years, there has been an increasing globalization and industrialization of the food systems. As a result, the distance between the production and the consumption of food has increased, both in time and space and in the minds of people. There is also an increasing concern for the environmental effects of industrial farming and the long distance transportation of food. Sustainable agriculture and efforts to build more sustainable food systems has emerged in opposition to the global food market. The definitions of sustainability usually include environmental, social and economical aspects. To build more localized food systems is seen as one way towards increased sustainability.

Due to the growing population in Stockholm, some of the urban green areas are beingsubjected to exploitation. Hammarbyskogen is an urban forest in the south of Stockholm andis an example of a green area that is planned to be transformed into an urban environment.This paper investigates key qualities and values of an urban forest of Hammarbyskogenvalued by local inhabitants of the neighbourhoods of Hammarbyhöjden and Björkhagen in thesouth of Stockholm. In addition to that, the study seeks to investigate people?s perception ofthe planned development of the forest as well as investigate how these perceptions andqualities are being incorporated into the process of neighbourhood development.Using text analysis, interviews and discussion forums, findings have been made showing thatthe local inhabitants value the urban forest mostly for its ecological and recreational qualities.Regarding perception of the change, people are either positive or negative to the developmentwhich can be explained by people?s experienced sense of place and place attachment of thearea and the forest itself. The study has also shown that the urban planners rely on localinhabitants? view, as well as on expert knowledge during the process of planning.The results of the study contributes to a better understanding of why and for what purposesurban forests are important for the city dwellers..