The objective of this diploma work is to investigate a set of Multiple Input Multiple Output (MIMO) channel models compatible with the emerging IEEE 802.11n standard. This diploma work validates also advanced, innovative tools and wireless technologies that are necessary to facilitate wireless applications while maximizing spectral efficiency and throughput. MIMO channel models can be used to evaluate new Wireless Local Area Network (WLAN) proposals based on multiple antenna technologies. The purpose of this thesis is to investigate means of channel models and their implementation in different environments such as: Matlab, C++ and Advanced Design Systems (ADS). The investigation considers also a comparison between the channel models based on theoretical data and parameter setup to the channel models based on statistical characteristics obtained from measured data.

In the wake of a heightened interest in the Swedish Middle Ages, the need for knowledge has increased as well. The Swedish Middle Ages was an era when the country truly began to grow closer to the European sphere of culture. The forces behind this transformation are largely to be sought among the social elite, the budding aristocracy of Sweden. The process of becoming ?Europeans? brought with it great changes to Sweden, not the least in terms of the political arena.

Syftet med denna studie är att undersöka några pedagogers syn på och hur de arbetar med rim och ramsor för barns språkutveckling. För detta syfte har följande frågeställningar formulerats: - Vilka metoder använder de intervjuade pedagogerna för att träna barns språk? - Vilka syften med och åsikter om rim och ramsor har de intervjuade pedagogerna? - Hur och när använder de intervjuade pedagogerna rim och ramsor i verksamheten? För att nå syftet med studien genomfördes en kvalitativ intervjustudie på två förskolor där tre pedagoger på respektive förskola intervjuades. Det gjordes även en mindre observation på respektive förskola. Tidigare forskningen ger olika signaler angående rim och ramsors betydelse för barns språkutveckling och ökade språkmedvetenhet men är alla eniga om dess möjlighet till lustfylld aktivitet för barn. Resultatet visade en stor skillnad vad gäller förskolornas användning av rim och ramsor. På den ena förskolan använde sig pedagogerna av rim och ramsor frekvent och säger sig ha gjort så under alla år.

Mobile devices such as tablets and smartphones are quite common in this day. The author of this thesis wanted to know how common these mobile devices are in the building industry and how they are used and what potential an app could have. The author thus conducted an investigation on this matter, mainly in the form of interviews.Answers given by the interviews were then used as a basis to survey the usage of mobile devices and the usage of different kinds of apps. An investigation of different apps with the potential to be used by professionals in the building industry has been carried through. Apps which manage such things as scanning documents, measuring distances and handle communication.

The purpose of the paper is to examine how teachers in preschool is working with language stimulation for the prevention of difficulties in reading and writing before school starts. The method that was used to illuminate the problem is a qualitative interview. A specialpedagog and six preschool teacher, which is specifically focused on language stimulation in the work with children, have been included in the study. The results indicated that preschool teacher are working a lot with language stimulation. They work mostly with children throughout the group, to encourage and provide children with the tools to be able to communicate with each other and staff.

Mobiltelefoni har blivit allt vanligare i dagens samhälle och konkurrensen mellan operatörerna har ökat. Det är då viktigt att operatörerna har ett stabilt och kvalitetssäkert nät. För att åstadkomma ett kvalitativt nät är planeringen bakom viktigt. Idag sker planeringen med hjälp av ett framtaget predikteringsprogram, TEMS Cellplanner, som är ett beräkningsprogram. TEMS Investigation är ett program som används då kontroller av nätet görs ute i fält.

This thesis has been carried out in New Zealand in collaboration with the University of Waikato. In association with Dr. Mike Duke the purpose of this work is to investigate whether two different software for modeling of photovoltaic systems are useful in the teaching of solar energy.The next ten years grid-connected photovoltaic systems are assumed to increase and therefore also a rising demand for people with engineering knowledge are to be predicted. For engineer students with a focus on solar energy a more practical teaching with design software´s can be a good method to make the students comprehend more when it comes to large scale photovoltaic systems and be more prepared for working life.The software´s used is called Transient System Simulation (TRNSYS) and Photovoltaic Systems (PVSYST) which are both well used throughout the world. To assess the reliability of the software´s, a reference solar power plant at 16.1 kWp installed capacity are used, which consists of photovoltaic modules from four different manufacturers.

Sveriges Radio stores their data in large archives which makes it hard to retrieve specific information. The sheer size of the archives makes retrieving information about a specific event difficult and causes a big problem. To solve this problem a more consistent use of metadata is needed. This resulted in an investigation about metadata and keyword genera-tion.The appointed task was to automatically generate keywords from transcribed radio shows. This included an investigation of which systems and algorithms that can be used to generate keywords, based on previous works.

In this work we study how the information provision should be organised in a new smaller size Swedish university college in a town without previous academic traditions. Specifically, our aim is to propose a possible model for information provision in Campus Helsingborg which is currently under construction. The study consists of two parts: literature review and empirical investigation. In the literature review we summarise a selection of articles about traditional and untraditional practically realised ways of information provision in nineties. The empirical investigation consists of 19 interviews with students, teachers and librarians from Kalmar, Halmstad and Helsingborg.

Purpose of the thesis is to construct a tool for car wheel change. Car wheels can be heavy and hard to handle and therefore the company Movomech intends to develop a tool that makes wheel change easier. Movomech does not have any similar product and because of this the work was condition less.The intended users of the product is tire workshops and there for the work began with investigation of these. The reason of the investigation was to see how wheel change is done and how tire workshops are planed. The tire workshops? crew?s opinions were also considered and above all one important conclusion was made.

With the prospect of future construction on the Skutskär Pulp Mill property, Stora Enso Fine Paper has initiated an investigation of soil contaminants and a risk assessment of these contaminants. A soil and groundwater investigation has therefore been conducted on an open area of about 16 000 square meters, situated between the current wood room and digester house. To be able to integrate this study into an investigation for the whole industrial property, the study has been carried out as a phase 2 study according to the Swedish Environmental Protection Agency?s Methods of Inventories of Contaminated sites (MIFO).The site investigation has involved soil and groundwater sampling, together with the analysis of heavy metals and organic contaminants. The degree of hazard posed by the contaminants, the level of contamination, the potential for migration of the contaminants, as well as the degree to which protection of human health and the environment is required in the area, have been weighed together for an overall risk assessment of the area with regard to human health and the environment.The investigated area was built up by filling in the coastal waters.

In the field of IT-forensics you may often get to analyze different types of digital devices. One ofthese devices is the GPS navigation system. Nowadays GPS technology is getting more and morepopular and is included more frequently in different types of devices. With this article we want topresent the differenent obstacles and possibilites that a forensic investigator is presented with in thistype of investigation. We will be comparing different software suites and make use of forensic toolssuch as EnCase.The reader should get some understanding of the methods there are for analyzing one of these devicesand what problems that may occur in the investigation process.The article presents how the investigator can use different methods to gain information such as recentroutes, favourite destinations and other information that may be stored on the device.

The company Västra Mälardalens Kommunalförbund, VMKF, wishes to revise and optimize their present data and IP-telephony network as of today consists of the three municipalities Köping, Arboga and Kungsör. As a municipal corporation, they seek consultation regarding internal as well as external review and investigation of the main structure of the network, its functionality and safety. By today?s increasing demands of Internet accessibility, availability of services and security far more extends the requirement of a complete network design. The foundation of networking rests on the balance between each of these necessities.

The purpose of this thesis is to investigate whether or not capitalism, viewed here as the system that is currently the dominant economic system in the Western world, can be seen as a modern myth or not. An author, Brian Tracy, of several popular self-help books is the target of this investigation and the language he uses in his books have been scrutinized in order to see whether or not he uses a religiously influenced, and more importantly, myth-creating language. In order to do so, Bruce Lincolns theories of myth have been used in correlation with Stefan Arvidssons definition ov myths. Also of interest is whether or not Tracy in his books uses any of the instruments of power defined by Michel Foucault to support his claims.The investigation shows that capitalism indeed can be seen as a modern myth. This claim is supported by the facts that Tracy not only uses a language heavily influenced by Christian texts and belief but furthermore because he descirbes himself and the people he claims to have helped in a way that strongly resembles the narratives of myths.

The primary aim of this thesis is to examine female lawyers' relationships to information from different angles. The starting-point is that the legal information, retrieved from through different information sources, is not free from values and subjectivity. The commonly presumed objectivity of legal information is questioned, based on the fact that this kind of information has developed and changed historically in the context of, and in relation to, society. Another aim is to find out how the female lawyers experience their situation in a traditionally masculine working environment. Qualitative interviews have been carried out with seven female lawyers involving questions about their daily work about the sources that they are using.