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 purpose of this essay is to examine the United Nation?s work and structure to find possible factors that can explain why some peacekeeping operations have achieved to mainstream a gender perspective, when others have not. This study is based on two cases; the peacekeeping operation in Namibia and the peacekeeping operation in Kosovo.The theory I have chosen to apply is feminism, a theory that allows an alternative explanation to this phenomenon. The conclusion is that there are three decisive factors: The leadership and its will to recruit female personnel to decision-making positions, the number of female employees and whether the peacekeeping operation cooperates with local women-organisations or not. All this is of great importance whether the institutional hegemonic masculine culture within the United Nation and its peacekeeping operations, is challenged or not..

Few generations have gotten as much media attention as Generation Y. Growing up in the digital age Generation Y has become very different from previous generations. An interesting topic is if this is reflected in the way Generation Y act as leaders. The purpose of this study is to describe what kind of leadership Generation Y prefers, to explore how individuals belonging to Generation Y act as leaders and finally to investigate if there is a discrepancy between these two perspectives and if so try to understand it. By reviewing existing research and conducting depth interviews with employees and managers at a Swedish bank we recognize preferences in a number of categories, which Generation Y require from leaders.

The purpose of this study is to determine who visits the V Frölunda Library, Gothenbug,what magazines they read and why. The data presented in this thesis are collectedusing four methods: general observation and counting numbers of visitors, interviewswith 202 magazine readers, the completion of 1308 questiomaires regarding approximately350 maghes and interviews with more than 100 library visitors.The data indicates that men are significantly overrepresented among magazine readersas compared to the female visitors. These men are primarily from the white collar sectorof the community. This leads to a pronounced underrepresentation of the blue coIlarworkers. Young people visit the magazine room in the library at a rate about twice thatexpected from the population distribution.Women are primarily interested in magazines dealing with the home whereas men aremore interested in business, cars, boats and sports.

Burnt Spine-cap Sárcodon fuligíneovioláceus are one the most endangered mycorrhizal fungal species in Europe. They have their main distribution in Sweden. It form mycorrhiza with pine and dependent on limestone, which makes it connected to a rare environment. It has therefore been important to study the ecology of it further and to recognise the requirement it has on the environment more accurate and what it need to establish in a new area. In this study, 31 of 34 known sites in Sweden was visited and studied in field and their history analysed through aerial photographs.

Plant nutrients are important for all life on earth and are also important as fertiliser infood production all over the world. Because of this, plant nutrients are of great valuebut they also bring problems. As an example, the loss of nitrogen and phosphorusfrom agriculture and urban society's sewage systems contributes to some of today?smajor problems in water environment. Another problem associated with plantnutrients is that finite recourses are used in the production of mineral fertilizers.

ästerbottens färgrika stenskatter - Spatiala presentationer och analyser av skifferfynd i Västerbottens län(The colorful stone treasures of Västerbotten ? Spatial presentations and analysis of slate artefacts in Västerbotten County)This essay pertains to the spatial distributions and analysis of slate artefacts in Västerbotten County, Sweden. The authors aim is to give answers the issues of what the distribution patterns of slate artefacts can tell us about the prehistoric humans in this area. By using GIS software and geospatial analysis the author strengthens the theories about separate interior and coastal economies, as well as the theory that the main share of production of slate artifacts are linked in the interior of the County, the author also refers to earlier research, both domestic and international. The theories of non-pragmatic preferences by the late Mesolithic and Neolithic people for red colored slate are also added to.

Syftet med den här undersökningen är att beskriva och analysera vilka fördelar och nackdelar det finns med att utkontraktera en transportplaneringsprocess till en extern part. Undersökningen genomfördes på uppdrag av BT-Europe i Mjölby på avdelningen som ansvarar för distribution av produkter och reservdelar. BT är i grunden ett svenskt företag som startade sin verksamhet 1946 och är idag världsledande tillverkare av eldrivna lagertruckar. År 2000 förvärvades BT av Toyota och detta skapade en världsledande konstellation inom truckbranschen.Bakgrunden till undersökningens syfte är att arbetet med att effektivisera och förbättra transportplaneringsprocessen inom BT har blivit eftersatt på grund av den kraftiga produktionsökningen de senaste 5 åren. Detta har lett till stigande kostnader för distribution av färdiga produkter och reservdelar.I dagsläget finns inget centralt kontrollorgan över transportplaneringsprocessen på BT utan all transportplanering av produkter och reservdelar till truckar, sker lokalt på varje marknadsbolag i Västeuropa.

AbstractThe number of natural disasters are increasing. Disaster relief today is improving, but not enough.The purpose of my graduation paper is to present a new solution to shelters. It?s important to remember the human, social and environmental aspects when designing a shelter for disaster relief. Each group within the population has to be able to use the shelter and benefit from it.

Burnt alun shale and lime is the residual product that was formed when alun shale was used as fuel to convert limestone to quick lime. The material contains arsenic, vanadium, molybdenum, cadmium, nickel, lead, and uranium among other elements. The aim of this paper is to examine the uptake of trace elements in vegetables grown on burnt alun shale and lime to determine whether or not the surrounding environment and humans are exposed to these elements by eating plant products. A cultivation trial was carried out where onion, carrot, and lettuce were grown on three mounds of burnt alun shale and lime in the Falköping area in Sweden. The treatments were burnt alun shale and lime mixed with peat, only burnt alun shale and lime, and a reference soil. The reference plots were natural soil mixed with peat adjacent to the mounds.

The purpose of this essay is to study the film culture in South Africa in a national cinema-context, focusing on the relationship between anti-apartheid film from 1974-1994 and the film in South Africa today. By pitching the South Africa-specific works of Lucia Saks and Jacqueline Maingard against the over-arching debate on national cinema as formulated by, amongst others, Stephen Crofts and Andrew Higson, this study aims to find whether or not a specific South African national cinema have existed, and exists today, or not. The study finds that an underground culture of documentaries and short films made by and for the black population has been in place since the apartheid, and the distribution method on video and television is still being used to reach the black population today. By re-examining the concepts of both the national, and of national cinema to also include film on video and television, the study shows that South Africa has indeed a film culture that can be called a national cinema..

The purpose of this essay is to examine how officials within the Swedish public libraryorganisation view the IT-development, how the IT-development progresses within theorganisation and if there is a need for a national IT-strategy for the public libraries in Sweden.Four unorganized interviews with officials within the regional- and county libraryorganisation and one within the national organisation where conducted. This study is aqualitative examination where the phenomenographic approach has been used as inspirationfor the analytic model. The analytic result has been compared to the system theory of how anoptimal system should be constructed to perform in an optimal way and to be able to producegood results. The results of this study show a wish for a better national cooperation regardingthe IT-development for the Swedish public libraries. Today?s library structure should bereviewed over in order to enable the libraries to produce even better results from the cooperation?s..

The evaluation of the function of the feeding of sheep herds is suggested to involve the work effort, the fulfilment of the nutrient needs of the sheep and the feed waste. Mechanisation of the feeding can be very simple or include high degrees of mechanisation. Three different farms, representing different levels of mechanisation are presented. Descriptions and analysis of the feeding systems including mechanisation, work effort and estimations of the feed waste are made on each farm. The herd with the most advanced feed mechanisation included a rolling feed band and mix wagon. The other farms were partly or little mechanised including ad lib feeding from big bales and manual distribution of hay and concentrates. The most mechanised farm was able to feed a large herd of sheep at a low work effort and little feed waste. However, the investment in machinery has to be weighed against the improved efficiency.

The purpose of this thesis is to examine whether the concept of permanent establishment, as defined in Article 5 of the OECD Model Tax Convention on Income and Capital, is applicable to electronic commerce and if so whether the current definition is able to appropriately deal with the challenges of electronic commerce.In 2003, the OECD added a new section to the Commentary on the Model Tax Convention on Article 5. The new section is a clarification on the application of the permanent establishment definition in electronic commerce.The current definition of permanent establishment in the Model Tax Convention relies on the physical presence of a foreign corporation as the threshold for source taxation. While the current definition, prima facie, might be applicable on electronic commerce, the highly mobile nature of electronic commerce might affect the current revenue distribution equilibrium between states..

AbstractAccording to several researchers finance is scarce, scarcer for small businesses than for big enterprises. Small and medium-sized enterprises, SMEs, that want to start exporting and sales or manufacturing abroad need capital to get ready. Which capital structure and financial costs do they have, and which forms of finance do they actually use for that purpose. New american research by Mansi, Reeb (2002) has suggested, that there is a positive connection between leverage and a negative one between financial costs and internationalization, and that a non-linear model better describes this connection.This study has gathered data in two ways: Through a questionnaire from 37 SMEs and balance sheet figures from totally 166 manufacturing SMEs. In order to examine, whether the company was active on the international market, 200 SMEs in south Sweden were asked, if they exported to, produced or sold on any other market than their home market.