Mechanical relays are more and more being replaced with semiconductortechnology. In this thesis it is investigated if and how the larger loads couldbe controlled by transistors. The main part of this work aims to create andverify a solution that can control the starter motor, as well as protect it incase of any failure. The different malfunctions that the solution protectsagainst is high current, too high peak current, low current, maximum cranktime and minimum cool off time. The timers also protect indirectly againstoverheating of the starter engine.The transistors used are BTS555, from Infineon.

Children at the age of six, has since 1991 been allowed to start their tuition in the Swedish school system. Studies reveal that; the first school year (preschool) can be a stressful task dueto the new environment, new friendships and higher expectations.The purpose of this study is to describe and analyze how the teachers perceive their own role in the transitioning process from preschool to school. This purpose required a method of qualitative complexion and therefore qualitative interviews were used. The material is based on four interviews with four different teachers. The teachers were asked the same question considering; the transition from preschool to school from a pupil point of view, their own role in that transition and their opinions on different educational tools.

The thesis mission is to investigate whether the swiveling laser that Vectura (former Vägverket Konsult) has in use to measure the road areas and straddle measuring can be used to detect differences in the reflective road markings function. This is to increase use of the swiveling laser and get rid of the manual measurements performed today.Currently, the measurement of road markings reflective function is performed with both mobile and handheld measuring instruments. The purpose of this thesis is to develop better methods for determination of road markings? reflective function, in order to facilitate the description and suggestions for improvements of the maintenance of road markings reflective function.The questions that the thesis has been to start with are:Can the swiveling laser detect differences in longitudinal and transverse road markings reflective function?The accuracy of measurement has been sweeping the laser over the reference instrument (LTL-2000)Is it necessary with a conversion factor for swiveling laser data against the reference instrument data?To answer the question 2 and 3, there has been a field work in Värnamo where a road stretch with longitudinal road markings and zebra crossing (transverse road markings) has been investigated with a swiveling laser and LTL-2000.The formulas and calculations contained in the thesis are drawn from scientific reports that are produced by VTI in Linköping. The same formula that was used to calculate the optical measurement data was also used for the swiveling laser data.

Scania is constantly trying to improve their product development process, the PD-process.The company, along with others, is optimizing their development process in order to gainadvantage in terms of shorter lead times and larger market shares. For this to happen, a wellorganized process is required.The PD-process is divided into three different phases that are linked together by a hand-overprocedure. Scania Bus has experienced problems that stem from a lack of hand-over routines,and as a result the product development process has been slowed down. This has a number ofconsequences, one of them being the complication of new project initiations.The main purpose of this master thesis was to review the hand-over procedure. Within thestudy the project directive was also to be examined, and a recommendation of how the start ofa new project could be made easier was included.To begin with, a detailed literature study was conducted with the intention of obtaining thebasic theoretical knowledge needed for this study.

This report represents a comparison between two different tools used to create an online store that was developed by two students at the Technical University in Jönköping. The web shop will be of great benefit to both customers and administrator in a food firm known as Mattias' Livs. The company wanted an online store that facilitates the sale section and gives a full control of their stocks. The aim of this thesis is to create an online store that offers customers the ability to shop online and help the staff to operate the company in a simpler and more efficient way, which reduces the need for human resources and thus leads to less costs for the company. The aim also includes a comparison between the two different tools used to create the online store.

At present indoor tethering of dairy cows is still common but is not predicted to take part of modern dairy production. When conducting scientific studies of cattle it is generally necessary to tether the animals to maintain a controlled environment. Studies confirm that tethering and confinements of cattle severely affects the development of stereotypies in cattle. The feeding regime and feeding level have an immense affect on the stereotypi level in cattle. The aim of this experiment was to study dairy heifers that had never been tethered before the start of the experiment, to evaluate the affect of tethering on the development of stereotypies and the impact of the feeding regime on the behavior of the animals. Sixteen dairy heifers were tethered in a tie stall and divided in two groups with different treatments. Heifers in treatment E were fed restrictedly with silage and treatment EH was fed with the same amount of silage but also straw ad libitum.

The purpose of this paper is to analyze and question the government survey 1956:43 Zigenarfrågan based on the theory of internal colonialism. An important question for the study is to elucidate and gain an understanding of the factors that led to Roma inclusion in the compulsory school. This survey of the goverment investigation is necessary because the state management of the Roma had to start the investigation, that led to a number of difficulties for the community. The investigation put also a lot of demands on the roma society. The state wanted at all means to influence and change the group's way of life.

The project, Glowtest Fixture, has been carried out to and in collaboration with MSA SordinLtd. MSA Sordin Ltd produces and sells ear protector and is at present a supplier on theworld market. Glowtest Fixture is a product for glow testing off detailed components in oneear protector. MSA Sordin Ltd sends today away your products for testing what is anexpensive aspect in their development. The project's aim is to take forward a test equipmentthat copes with those high nonplussed requirements and wishes that are required for anapproved physical execution.Glowtest Fixture is a physical equipment that comes used stem glow physical off all detailedcomponents in one ear protector.

To reconstruct a building is a long-term investment for farmers and it is important that people with different qualifications are involved at an early stage for making the system adapted to the animals as well the animal keeper. Therefore, ethologists who can contribute with their expertise are needed to design the system and get it to function well for the animals.A Swedish farmer who planned to rebuild her stall for tied dairy cattle to a loose-housing system for recruitment heifers for milk production asked me as an ethologist to find a system which can be fit to her existing tie-stall barn for 30 dairy cows, considering the animal needs in terms of movement, social interactions and play behaviors, and to theoretically compare the system with other systems with respect to the behaviors mentioned.The theoretical comparison between different systems was made through a scientific literature review.In agreement with the animal keeper I set out to fit a system with feeding cubicles, a system with cubicles and a system with deep straw bedding to the barn. After measurements were taken and preliminary drawings were outlined it was found that only the feeding cubicle system was possible to fit to the barn.The space provided will limit the animals to perform some playing behaviors. To decrease aggressive interactions between animals even thought a limiting area it is possible to provide partitions between resources animals compete around to prevent that more than one animal can get success to the resource at a particular place at one time. To increase the animal movement in the system the water trays were moved to the outer wall instead of kept in contact with the stalls.Although this report provides guidelines for rebuilding, other competences regarding building construction and a pre-test of the suggested building solution according to Swedish legislation are needed before the rebuilding can start.The results are directed mainly to the owner of the barn, but the literature review can be used by other cattle farmers and might bring increased understanding of the possible effects of different building solution on the animals..

Bakgrund: Det har varit mycket diskussioner om vilken kost som a?r la?mplig vid typ-2 diabetes. LCHF-kost har pa? senare tid blivit uppma?rksammad som ett bra alternativ. Det finns flera vetenskapliga studier avseende de fysiologiska effekterna av LCHF-kost, men inte pa? den sja?lvupplevda ha?lsan hos dem som fo?ljer kosten.

In system development it is today increasingly common to use a model-based system development method. These methods that are suited for Agile work with simple and quick updates and implementations of new applications in systems conform to the requirements that are becoming more important today, namely more flexible and less expensive system that still maintain high quality and safety.A company that has been working with this type of system development method for a long time is Genicore AB, which also has developed their own tools and model language in order to better model the information management systems in complex and abstract operations. Genicore AB is trying to spread their method other developers and have therefore taken the initiative to start this study. The method is evaluated and tested by two students with relatively little experience in model-based systems engineering in order to gain a new perspective on how the method functions. The method has been applied to an educational activity in order to test it in a new domain, and this led us to our research question;?What criteria are of particular relevance in the implementation of a MBSD method on on complex businesses??Through literature reviews and interviews, we formed an idea of how model-based system development works from a theoretical perspective, and then continued to the case study conducted on the educational activities at the faculty of IT at University of Gothenburg.

The Swedish early childhood system is considered among the best in the world, however, in spite of this, we feel that there exists a conflict between educators? and parents? expectations of ?a good preschool?. During our teacher education training we have observed many different preschools and almost in all of them we have listened to anecdotes about one or more conflicts arising between educators and parents and which we have been able to pinpoint toward differing expectations. After talking with a preschool director, who also perceives that expectations of the preschool aims sometimes differ, our idea brought us to conduct this investigation.In this study, we have investigated parents? expectations of preschool and compared them with educators? expectations.

Life science sysselsätter i Uppsala 4500 personer varav 60% arbetar på de fyra största företagen. Branschen är forskningsintensiv och producerar bland annat läkemedel och produkter till läkemedelsbolag och akademiska institutioner. Produkterna är nischade och företagen måste ofta vara globala redan från start. Denna studie undersöker med hjälp av teorier om internationalisering tre fallföretag inom life science från Uppsala. Genom intervjuer och årsrapporter dras slutsatsen att fallföretagen främst har internationaliserat sin försäljning med olika strategier för att penetrera internationella marknader.

Chemicals are everywhere in todays society, in humans, animals as well as nature, and they are difficult to avoid. The chemical industry is regarded to be the fastest growing industrial sector, accounting for ten percent of the global economy. A large amount of chemicals are used to produce hygiene products and cosmetics, products that in Sweden only are consumed in quantities of 110 tons per day. Researchers find it increasingly difficult to determine which chemicals that are dangerous and which that are safe, and how they might affect us in the long run. Correlations have been found between chemicals, diseases and other health effects such as cancer, allergies, reproductive and endocrine disorders.

Background: Sweden has become a society with a multicultural population. Many children start preschools with different backgrounds and experiences. Teachers today face the task of meet those children in the best way. Södertörn University has a special profile on their teacher education, the intercultural profile.Aims: My report focuses on teachers who have been working in preschools for about one to two years after graduating from the intercultural education at Södertörn University. The report aims at finding out more about their experiences and thoughts about the intercultural approach after having worked in the Swedish preschool with a special focus on the intersectional perspective on cultural phenomena class, gender and ethnicity.