Quadrotor UAVs are self-stabilizing, autonomous flying machines that has recently become more popular than ever. Unmanned Aerial Vehicles have their roots in the military, where they were developed for use in reconnaissance and combat. During the last few years, advances in the fields of electronic sensors, electric motors and microcontrollers have enabled smaller designs and autonomic flight control even for private use. The quadrotor, which is the particular kind of UAV we are looking closer at in this paper, has 4 rotors in an X-like formation. This configuration has many advantages such as good lift capacity, non-complex mechanical structure and serviceability.In this project we aquired a current overview of the domain and determine whether it is possible to construct a quadrotor UAV designed for use in a WISENET sensor network on a low budget and short Time schedule.Based on existing community project AeroQuad, a quadrotor is constructed with a budget of about 500 euro.

The idea to develop  a platform for a PID-controller came from the need to control the temperature in  an espresso machine in a more exact way than a thermostat could perform. In discussions with Syntronic AB the idea developed into PID-control for industrial use. Syntronic AB suggested that the platform should be based on a commercially available processor module to shorten the development time. The suggestion included the use of the microcomputer Raspberry Pi, which supports USB, HDMI, memory card and Ethernet.The work began with establishing a schedule for the 10 weeks of the projects duration, and after that a system specification listing all functions, implementation and limitations was made. When the foundation of the system specification was done, a preliminary system design took shape.Because of the Raspberry Pi´s lack of Analog-to-Digital converter, a circuit board containing Wheatstone bridges, differential amplifiers and a two channel Analog-to-Digital converter was fabricated.

This thesis has had its focus on ceramic shards found in a trench by the late neolithic western shore of the Ajvide site. The purpose of the thesis is to investigate if there are changes in the pottery between the test trench and the ceramics found by the graves, known as the main site. The author has compared the ornaments from the test trench with an ornament schedule made from over 50 000 shards from the assumed main site. Not only changes regarding ornaments has been noticed but also new techniques and raw material. The author has also implemented two 14C datings which backs his hypothesis that the shards from the test trench are younger than the shards that made the earlier ornament schedule.

During sleep the majority of the body?s production of anabolic hormones is produced and sleep is a general anabolic state of being. It has been to our recognition that a powernap is 4-6 times more effective when it comes to sleep intensity than the last 1-2 hours of a traditional eight hour sleep. With this in mind, and that elite athletes worldwide often sleeps in between their training sessions. This study has tried to prove a hypothesis which comes from the assumption that you can recover and perform better during times with intensive periods with better distribution of your sleep.We have in this study let three test subjects take part of a six week long program with two different training periods for legs.

Quadrotor UAVs are self-stabilizing, autonomous flying machines that has recently become more popular than ever. Unmanned Aerial Vehicles have their roots in the military, where they were developed for use in reconnaissance and combat. During the last few years, advances in the fields of electronic sensors, electric motors and microcontrollers have enabled smaller designs and autonomic flight control even for private use. The quadrotor, which is the particular kind of UAV we are looking closer at in this paper, has 4 rotors in an X-like formation. This configuration has many advantages such as good lift capacity, non-complex mechanical structure and serviceability.In this project we aquired a current overview of the domain and determine whether it is possible to construct a quadrotor UAV designed for use in a WISENET sensor network on a low budget and short Time schedule.Based on existing community project AeroQuad, a quadrotor is constructed with a budget of about 500 euro.

The aim was to study the factors that contributed to the prescription of physical activity on prescription (PaP) by the professions in primary healthcare. A qualitative method was used in the study. The sample consisted of six participants; two doctors, two physiotherapists and two district nurses in primary healthcare in Uppsala County. The data were collected with semi-structured interviews and were analyzed with a thematic approach. The results show a great variety in which type of patient that receive PaP, however people with lifestyle diseases such as diabetes, hypertension and obesity are often more represented.

Swedish as a second language and special education are two topics that have a lot in common. I have chosen to in my study look at something that is covered by the two subjects: Swedish as a second language education that is taking place in a group segregated from the class. I have interviewed students in preschool, grade one and grade two to learn details of their experience of the segregation. Finding out that it is mostly bad planning and trouble getting the schedule together that?s affecting the pupils in a negative way.

Truancy is a problem in the Swedish schools today, just as well as in other European and other developed countries where educataion is gratuitous. Teachers all over Sweden go to classes with a clear and well-planned schedule for the day. But some are unable to do their work because of asent students. In this study I have chosen to focus on the perspective of the youths and the main question is: how do students discuss and think about truancy. During the study I have chosen a qualitative approach and have therefore done observation in various classes in a Swedish senior high school in a suburb outside Stockholm during twelve weeks.

The purpose of this paper is to find out which characteristics the female and male characters have in five selected horse books in children's literature. I have analyzed five horse books by Professor Maria Nikolajeva?s gender roles schedule. I have chosen to do a qualitative text analysis and the questions I chose to ask for the books are: Which characteristics does the girls and the boys have in the selected horse books according to Nikolajeva?s gender chart? What is the relationship between the main characters and the horse/horses according to the theories of Backman? What does the typical horse book look like today? What I come to conclusion in my paper is that all the horse books I analyzed have female main characters, and the girls in these books about horses take a lot of space and demonstrate themselves strong.

The purpose of this thesis is to gain insight into educators? views and work with circle time in preschool. To find out, I have referred to the following questions: How is your circle time performed in preschool? What objectives have teachers with the circle time? What impact has your circle time for the children in preschool?I have chosen to carry out qualitative interviews with three preschool teachers. After the interviews, I compared the educators? response to previous research.The survey shows that the circle time is one of the day´s highlights for preschool children.

This master thesis in economics discusses the time use of today as well as the observed trends in time use over the last 20 years in Sweden. This is done by analysing time-use and consumption data at the microeconomic level, i.e. by explaining individual behaviour given the economic assumption of a rational behaviour. We reach the conclusion that the value of time is an important explanatory variable concerning the rationality in that time is used differently by different individuals and in the changed use of time. Furthermore, other variables such as social norms and the process benefit of a certain activity, i.e.

Our aim with this study has been to show the central factors that we consider have had animpact on public libraries in the "information society". We have studied two communities in the south of Sweden, Ronneby and Sölvesborg. These two communities have both started a development to the IT society, a society where information plays a great role, where the technique is the tool that supplies information.Ronneby community had early the aim to be the chief Swedish information center. A priority on information technology has therefore been obvious for them. Sölvesborg community has had another method and Time schedule towards the IT society.We have been studying the documentation of aim and the strategy for IT development in different levels.

Swedish as a second language and special education are two topics that have a lot in common. I have chosen to in my study look at something that is covered by the two subjects: Swedish as a second language education that is taking place in a group segregated from the class. I have interviewed students in preschool, grade one and grade two to learn details of their experience of the segregation. Finding out that it is mostly bad planning and trouble getting the schedule together that?s affecting the pupils in a negative way.

The main purpose of this study was to examine the relationship between adult attachment, denoted as mental representations of childhood experiences, and social relations. A secondary purpose was to examine the impact of prematurity on attachment and social relations in adult age. The study is part of a larger longitudinal study carried out by professor Karin Stjernqvist and Anne-Li Hallin, candidate for the doctorate, at the Department of Psychology, Lund University. Participants of the present study were 30 individuals randomly selected from the larger study. Of these, 16 individuals were premature born and 14 individuals were full-term born.

The purpose of this essay is to illustrate the preparation of total and civil defense education in schools in the 1970s to gain insight into how the school looked and pondered the complicated world that existed outside the school's doors. By using the concepts of welfare state, welfare and civil defense culture, I have studied relevant materials to get answers to questions treating the total and civil education in schools after Lgr69, the way the state sees the subject and if it is possible to detect a civil defense culture in schools and if so, how it will be expressed.     The results show that the state emphasized education as incredibly important because knowledge of how to act in a crisis or war could be extremely crucial for the individuals and their survival. The education was so important that it got a role as a main factor in Lgr69. But even if the education was important the teachers had huge problems with the schedule and many teachers couldn´t educate all facts because they didn´t have enough time.