The tick-borne disease bovine anaplasmosis is primarily caused by Anaplasma marginale. A variety of wild animals act as reservoirs for A. marginale, but the understanding of their role in the epidemiology of A. marginale is yet poor. This cross-sectional study was conducted to establish if proximity of wildlife affect the prevalence of bovine anaplasmosis in cattle.

This aim of this thesis is to measure the effect of the user interface in real searches on the Internet through a small experiment. Theories on web and search usability and psychological factors concerning usability were first explored. Then three interfaces were constructed, one "good" that followed usability guidelines and had multiple search functions, one "bad" that completely disobeyed those guidelines and had only a simple and small search field, and one "intermediate" interface that was a mix of the two. The search field was set to different sizes, with the shortest in the "bad" interface, a medium field in the "intermediate" interface and several long fields in the "good" interface. All three interfaces were then attached to the same web search engine, Altavista.

Globally, coastal ecosystems like mangrove forests, sea grass meadows and salt marshes are well known for their ability to capture and store atmospheric carbon effectively. In Sweden, there is still limited knowledge about local coastal ecosystems with similar functions, with alder swamp forests being an interesting example. Therefore, this study aimed to increase knowledge of the factors that can contribute to the potential carbon sequestering ability of alder swamps. Vegetation data and sediment samples were collected from a total of 37 sampling plots across four alder swamps in Bohusl?n on the Swedish west coast.

A pavement construction designed to cope with the different type of traffic loads; it is exposed to and at the same time it can resist the effect of the climate. A road structure consists of sub- and superstructure which is divided by a boundary known as terrace. During the construction of unbound layers (base course and sub-base course) in the superstructure, it is always ensured that the material meet the requirements for bearing capacity and the degree of compaction. These parameters are controlled by various laboratory tests and control methods. To obtain increased knowledge of the material and improve the quality of the compaction in the field, it is necessary to perform laboratory tests in order to determine material properties.A base course material 0/ 32 mm limestone from Gotland (Hejdeby) was investigated in this study.

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.

Organizational learning has become more and more important in the last decades as the environment in which organizations exist continues to change rapidly and unexpectedly. In order for organizational learning to happen, the individuals within the organization must learn. Just as different individuals possess different skills, each individual also has their own learning style. As the use of teamwork increases, so does the need for techniques to put high performing teams together and with organizational learning as one of the objectives the question is, how do we maximize learning, efficiency and performance in teams? This study uses a quantitative method to examine how teams, from a course at the Stockholm School of Economics, perform on the individual learning, team efficiency and team performance scale based on the individual learning styles within the team.

Genom att studera relationen mellan upplevt psykologiskt arbetsklimat och anställdas användande av sociala media i arbetet söktes stöd för studiens huvudsyfte: om anställda använder sig av sociala media i arbetet om arbetsklimatet inte upplevs som positivt, samt om sociala media används, hur anställda då uppfattar sociala media som hjälp och stöd i arbetet. Genom en webbaserad enkät samlades data in från deltagarna (N = 27), vilka härrörde från tre IT-avdelningar i en kommunal organisation i Mellansverige. Analyser av ackumulerad data skedde till övervägande del genom Spearmans korrelationstest och Mann-Whitney U-test. Resultatet indikerade stöd för två av studiens tre hypoteser vad gäller samband mellan upplevelse av psykologiskt arbetsklimat och användande av sociala media, samt skillnader mellan anställdas upplevelse av relationer till kollegor offline och användande av sociala media. Däremot hittades inga signifikanta skillnader för hur anställda, beroende på hur de ser på kunskap, tar stöd från relationer online och offline..

Genom att studera relationen mellan intention till uppsägning och upplevd arbetstillfredsställelse, organisationsengagemang och kommunikation söktes stöd för studien syfte, det vill säga att identifiera vilka faktorer som ligger till grund för intention till uppsägning inom vården och snabbmatbranschen. Datainsamling gjordes med hjälp av en webbenkät som skickades till deltagarna(N=48), vilka härrörde från ett äldreboende och en snabbmatskedja i Blekinge. Genom Spearmans korrelationstest och Mann-Whitney U-test analyserades den insamlade data. Resultatet visade stöd för två av studiens hypoteser gällande korrelation mellan arbetstillfredssällelse, organisationsengagemang och intention till uppsägning. Resultatet gav även delvis stöd till två av studiens hypotes vad gäller negativa korrelationer mellan anställdas arbetstider och avsaknaden av kompetensutveckling inom organisationen och avsikten att stanna kvar på sin nuvarande arbetsplats, samt signifikanta skillnader för hur anställda inom vården och snabbmatskedjan upplever organisationsengagemang och relation till ledningen.

Most of the city of Uppsala rests on postglacial clay with a varying content of sulphur. The sulphur occurs naturally in the clay in reduced form as sulphide and the clay is for that reason usually called ?sulphide clay?. Excavation during construction activities gives rise to large amounts of excavation material, of which the sulphide clay is a considerable part.When the clay is exposed to air and water, an oxidation of the sulphides occurs which may produce an acid leachate and the mobilisation of heavy metals bound in the clay or underlying material. The aim of the work has been to improve our understanding of the behaviour of sulphide clays and produce a basis for risk assessment in the future handling of excavation material with high sulphide content.

For many years, the construction industry in Sweden has not developed much of an integral approach for design across disciplines. The sector?s impact on society, economics and environment is huge. To make the interactions within the construction industry more efficient, a relatively new concept called BIM (Building Information Modeling) has been introduced. The idea with BIM is that the different actors of the construction industry will work through intelligent CAD software, with common file formats and more cooperation between different actors during the various steps of the building and construction process.The technical consultancy company WSP Sweden is working actively to implement BIM within the frame of its activities.

During the last year in the Innovation Engineering Program, at Halmstad University, a degree project was performed that was carried out during Fall semester in 2006 and Spring semester 2007. The project was performed by two students in corporation with LIC Audio AB, a company in Stockholm. The degree project was meant to result in a communication aid for people with a cognitive handicap. The project focused on people suffering from dementia because of the expressed need within this group. This aid should first and foremost help in a conversation between a person with dementia and another person, like a relative or nursing home staff.

Genom att studera relationen mellan upplevt psykologiskt arbetsklimat och anställdas användande av sociala media i arbetet söktes stöd för studiens huvudsyfte: om anställda använder sig av sociala media i arbetet om arbetsklimatet inte upplevs som positivt, samt om sociala media används, hur anställda då uppfattar sociala media som hjälp och stöd i arbetet. Genom en webbaserad enkät samlades data in från deltagarna (N = 27), vilka härrörde från tre IT-avdelningar i en kommunal organisation i Mellansverige. Analyser av ackumulerad data skedde till övervägande del genom Spearmans korrelationstest och Mann-Whitney U-test. Resultatet indikerade stöd för två av studiens tre hypoteser vad gäller samband mellan upplevelse av psykologiskt arbetsklimat och användande av sociala media, samt skillnader mellan anställdas upplevelse av relationer till kollegor offline och användande av sociala media. Däremot hittades inga signifikanta skillnader för hur anställda, beroende på hur de ser på kunskap, tar stöd från relationer online och offline..

Scania is among the leading companies in the heavy vehicle industry. Scania also assemble engines for their trucks and buses, as well as to external marine and industrial applications. Wrongly assembled parts leads to quality problems, which makes it important to secure that the assembly is correct. To do this Design For Assembly (DFA) is used to describe how parts should become easier to assemble. Scania?s production unit for engine assembly has had a working method for DFA in the shape of a checklist, which is not used.

The purpose of this master thesis has been to find different solutions to the design of a headlamp with a cluster of three or possibly four high power LEDs (Light Emitting Diodes). During the work, two different problems have been considered; how to design a lens in order to shape the light beam in a desirable way, and how to design a cooling system which will lower the temperature of the LEDs as efficiently as possible, still taking into account the geometry set by the optical solution as well as other given geometries. The results presented in this thesis are partly the outcome of a literature study, but derive mainly from a number of tests and measurements made on two test rigs and one concept prototype..

The first browser war took place during the second half the 1990s, and Internet Explorer cameout as the winner over Netscape Navigator. Today a new browser war is being fought withmany competitors and the future is uncertain. The purpose of the thesis is to find out how theweb browser market has developed since the start of the previous conflict, and we ask ourselveshow it will continue to develop in the future. This is accomplished with, among otherthings, interviews, tests and already existing statistics. The thesis' conclusions shows that theweb browser market has developed in a positive way from several perspectives, both for theusers as well as for the web developers.