This report describes the manufacture and control of a flying platform. The report describes the basic and fundamental theories required to get the platform flying. It touches on subjects such as A/D-conversion. PWM-control and PID-control. The sensors used in the platform are a gyro and an accelerometer.

This study was conducted at VikingGenetics' bull breeding station in Falkenberg, Sweden. The bulls waiting for the results of their progeny testing at this station are either kept in group housing or individual housing. Since both of these housing systems have advantages and disadvantages, it was in the interest of VikingGenetics to know which of these housing systems is the best. The aim of this study was to investigate the welfare of the bulls in these two housing systems through behavioural observations and the use of activity monitors. In the preparations for the study 16 bulls, 8 in each housing system, were chosen.

Varje år ökar avfallsmängden och användningen av naturens resurser vilket gör att återvinning blir en viktig del för ett hållbart samhälle. Årligen dumpas mer än 6,4 miljoner ton plast i haven från fartyg. Den 1 januari 2013 skärptes regelverket MARPOL för att minska mängden avfall som slängs i havet. Mot denna bakgrund har syftet med studien varit att undersöka hur motivationen att sortera kan påverkas av antalet avfallsfraktioner i hamnarna. En kvalitativ metod med sju intervjuer har använts.

Unwanted vegetation on the land of electric transforming stations is a problem, in the sense that it contributes to higher fire risks and also constitutes an obstacle for people performing maintenance operations at the station. Such unwanted vegetation is controlled using herbicides and mechanical measures. Since the use of herbicides implies environmental hazards, there is a need to find alternative ways of fighting the unwanted vegetation. Investigation into suitable plants for ground cover, trials in the greenhouse, trials in the field, soil analyses and compilation of experiences from similar trials are parts of this work. The paper also contains analyses of possible environmental benefits and economical gains. There is also a final discussion of some proposals regarding alternative weed controlling methods.

We are heading towards a huge switch of how energy is produced with fossil fuels being replaced by renewable energy sources. It is not difficult to replace the energy you use in the house and there is no need for futuristic technology. There are already many established products on the market such as high efficiency vacuum solar collectors, heat pumps & small wind power stations that can supply the energy being used in a house. The company Sol & Energiteknik SE AB in Huskvarna has many different products which can reduce the need for an outside energy distributor. An average house in Sweden uses 15 000 kWh for heating, 5000 kWh for tap water and 5000 kWh for electricity.

Modern technology and fast development of heat pumps, the hunt for savings in energy consumption and the strive for environmentally friendly energy sources, convenience, and financial profit, have made heat pumps a reasonable alternative for the heating of houses.When the heat pump starts it will consume a considerable amount of current, which may result in a short-lived voltage-drop if the power grid is weak compared to the start-up current.The company Fortum Distribution which owns and administrates electrical network is interested in an investigation that deals with heat pumps affect on the quality of electricity.The purpose of this investigation is to study fast electrical fluctuations (flicker) as a result of start-up currents for single as well as multiple heat pumps on the same electrical station and from this evaluate whether there will be any problems installing heat pumps..

To be allowed to sell Z-suspended vehicles with dipped beam Xenon or LED lighting, Scania have to develop automatic headlight level control. This master?s thesis aims to be the foundation to that development.The thesis consists of several parts; a market analysis of how competitors to Scania and the general vehicle industry solve this problem; several available principles for detecting the amount of control needed; the construction of a test station for sensors, a control unit and components connected controlled by the control unit; a further theoretical and practical development of one principle ? one rotational sensor connected between the chassis and the back drive axis; a state flow model programmed in Simulink that produces the control signal for the headlight leveling from the sensor input.Lastly the thesis gives some recommendations to the further development and implementation of automatic headlight level control on Scania vehicles..

The project was carried out together with OC Off Course who manufactureand distribute mainly electric bikes.In today?s society, alternative sources of transportation becomes more andmore present and several bicycle sharing programs arises in major citiesacross the world every year.Something that doesn?t exist too much as of yet is bike sharing programsthat uses electric bikes. An electric bike is a convenient way oftransportation as well as a good way of avoiding traffic. With an electricbike you avoid having to sweat when biking over hills or when you need totravel over longer distances.The goal of this project is to develop a bike sharing station according tothe functions need to be met.This thesis Is based on Fredy Olsson´s methods principkonstruktion aswell as a couple of concept generating methods from Kenneth Österlin.From this, a number of sketches were made that later was evaluated inseveral steps in conjunction to a set of specifications. A 3D model of theselected concept was later made in CatiaV5 for a complete product..

Den här studien är en analys av hur den ryske författaren Lev Tolstoj, genom kanonisering och uppkomsten av vissa mönster av texter, bilder och representationer, reduceras till tecken, symbol och ikon, samt hur denna symbol och ikon behandlas i två filmadaptioner - Leo Tolstoj (Lev Tolstoj 1985) respektive The Last Station (2009). Den teoretiska utgångspunkten är i huvudsak Jurij Lotmans kultursemiotiska teori och i synnerhet hans definitioner av termerna tecken, symbol och ikon. Uppsatsen visar, utifrån denna semiotiska teori, hur adaptionerna väljer att representera en viss bild av Tolstoj som en reduktiv strategi för att kunna skapa ett narrativ som måste infoga och välja bland en komplex uppsättning av bilder och självbilder, representationer och självrepresentationer.Resultaten av analysen visar hur bilden av Lev Tolstoj i Lev Tolstoj fokuserar på bilden av författaren som å ena sidan starjets, som en vis äldre man, som människor uppsöker, och å andra sidan som författare. Hans verk ges följaktligen stort utrymme och det refereras ofta till hans verk, och då i synnerhet till den senare produktionen av filosofiskt och religiöst material. Vad gäller de ikoniska elementen är det bilden av den gamle mannen i de enkla bondekläderna från de sista åren av hans liv som dominerar.

The purpose of this study was to examine the various influences and advertising in particular affecting travelers' choice of destination. Data collection was conducted through quantitative method in the form of a survey to identify how travelers choose a destination, and to what extent they are influenced by advertising. Interviewees were travelers who were in Stockholm's central station would be passed on to Arlanda. The results from this study indicate that underlying factors such as economy, security, seasonal and service in place. The results also show that advertising is an important factor in selecting the destination.

The project was carried out together with OC Off Course who manufactureand distribute mainly electric bikes.In today?s society, alternative sources of transportation becomes more andmore present and several bicycle sharing programs arises in major citiesacross the world every year.Something that doesn?t exist too much as of yet is bike sharing programsthat uses electric bikes. An electric bike is a convenient way oftransportation as well as a good way of avoiding traffic. With an electricbike you avoid having to sweat when biking over hills or when you need totravel over longer distances.The goal of this project is to develop a bike sharing station according tothe functions need to be met.This thesis Is based on Fredy Olsson´s methods principkonstruktion aswell as a couple of concept generating methods from Kenneth Österlin.From this, a number of sketches were made that later was evaluated inseveral steps in conjunction to a set of specifications. A 3D model of theselected concept was later made in CatiaV5 for a complete product..

This paper shortly describes the coronavirus family, bovine corona viruses (BCV) properties and two diseases that BCV causes, winter dysentery and calf diarrhoea. The purpose of the study was to compare different diagnostic methods to detect BCV. Different methods are discussed, PCR, ELISA, immunofluorescense and virus isolation. Investigations were made in three different herds with winter dysentery; one dairy cattle farm with about 100 cows of different ages, one testing station for bulls with about 150 bulls and another small dairy cattle farm with 26 cows and 20 replacement heifers and calves. Faeces and nasal swabs were analysed with PCR and ELISA. The result shows that PCR seems to be a reliable method for detecting BCV but that the ELISA test can not be used as a reliable diagnostic method to analyse samples from animals with winter dysentery..

This master thesis studies how much the cycle time, i.e. the time it takes for an industrial robot to perform a given task, can be reduced if an extra degree of freedom (DOF) is added to the robot system. The extra DOF consists of a linear track, which is supposed to be used in an optimal way. The problem has been studied using simulations in the robot simulation tool RobotStudio. To be able to run an optimization in Matlab, with the RobotStudio simulation cycle time as the object function, communication between Matlab and RobotStudio has been set up with an interface written in Visual Basic.

The following study aims to investigate the environmental conditions of the harbor of Sk?rhamn, a small fishing community on the west coast of Sweden. The interest to do so rose as a newly built apartment residence failed to connect the sewage pipes of 18 apartments, causing the untreated sewage running into the sea. The parameters accounted for are the C/N ratio, total organic carbon (TOC) as well as total nitrogen present (TN) and ?13C in the top ten centimeters of a sediment core retrieved in the Sk?rhamn harbour.

Den här studien är en analys av hur den ryske författaren Lev Tolstoj, genom kanonisering och uppkomsten av vissa mönster av texter, bilder och representationer, reduceras till tecken, symbol och ikon, samt hur denna symbol och ikon behandlas i två filmadaptioner - Leo Tolstoj (Lev Tolstoj 1985) respektive The Last Station (2009). Den teoretiska utgångspunkten är i huvudsak Jurij Lotmans kultursemiotiska teori och i synnerhet hans definitioner av termerna tecken, symbol och ikon. Uppsatsen visar, utifrån denna semiotiska teori, hur adaptionerna väljer att representera en viss bild av Tolstoj som en reduktiv strategi för att kunna skapa ett narrativ som måste infoga och välja bland en komplex uppsättning av bilder och självbilder, representationer och självrepresentationer.Resultaten av analysen visar hur bilden av Lev Tolstoj i Lev Tolstoj fokuserar på bilden av författaren som å ena sidan starjets, som en vis äldre man, som människor uppsöker, och å andra sidan som författare. Hans verk ges följaktligen stort utrymme och det refereras ofta till hans verk, och då i synnerhet till den senare produktionen av filosofiskt och religiöst material. Vad gäller de ikoniska elementen är det bilden av den gamle mannen i de enkla bondekläderna från de sista åren av hans liv som dominerar.