When drivers overnight in the truck lots of electric energy is consumed by heaters, fans, lights and other extra equipment. If the engine is not running, this energy is taken from the lead/acid batteries of the truck which then needs to be recharged during operating hours. The fact that the charge acceptance of the lead/acid batteries is dependent on the temperature makes it hard to fully recharge the batteries at lower temperatures. A negative charge balance can lead to starting problems within a few days use in cold climate.In this thesis work, the effects of different battery charging concept are evaluated on the most common Scania battery (175Ah). A battery model is implemented in Matlab and some simulations of charging are made.

Trust is a concept used throughout our daily lives. We give trust to friends, colleagues and strangers. We also give trust to the technical artifacts we use in our everyday lives. We must also rely on the services we use to work the way we expect them to. There is plenty of research on trust in e-commerce and online banking on website based platforms.

The purpose of this study was to follow a research-oriented design process and to develop a design draft for a digital service that supports users to make more environmentally conscious choises in their everyday life. By following an interaction design process from start to final delivery, the study aims at creating a broad understanding of the process. Therefore, many userrelated activities were implemented in the study: eg. personas, scenarios, sketching and user testing. The project resulted in digital wireframes for an iPhone application using embedded GPS to identify and locate environmentally friendly businesses.

Nowadays naval units are participating in international missions, where new and in many cases tougher conditions will affect their propulsion. This essay deals with some of the now developed nanostructure coatings and gives a presentation of how the coatings could function on some exposed parts of the naval powertrain. The essay investigates the possibility that the coatings can be used as a protective layer that will reduce or prevent wear on selected parts of the naval powertrains. As a basis for the essay, nanotechnology is described, as well as different reasons that wear occurs and application techniques for coatings The conclusion is that nanostructured coatings can be applied and provide a much better result on hardness and wear resistance as of naval powertrains compared to micro-structural coatings, both for manufacturing and renovation. The essay presents a few examples of the military utility of the nanostructure coatings as well as suggestions for further research..

Organisationer har under den senaste tiden gjort stora ansträngningar för att integrera informationssystem med målsättningen att uppnå en ökad effektivitet men utan större framgång. Vi vill identifiera rådande kritiska framgångsfaktorer och deras påverkan på portallösningar. Utifrån syftet identifierade vi två centrala områden för litteraturstudien, närmare bestämt ?Enterprise Application Integration? (EAI) och kritiska framgångsfaktorer (CSF). Insamling av empirisk data gjordes i form av intervjuer på ett kvalitativt tillvägagångssätt.

The purpose of this thesis is to examine the performance of different types of queries in the AltaVista query-based search engine. Thirty information needs have been collected from an ask-a-question service on the World Wide Web, which means that they are based on real users information needs. This is done to avoid partiality in the study. The author has invented different types of queries for each and every one of the information needs in accordance with the search syntax available for AltaVista. The types used are Boolean expressions, queries including proximity operators, phrases and queries directed towards a specific field.

This master?s thesis seeks to examine how a public library use the intranet with regards to the possibilities that today?s intranet technology offer ? especially concerning functionalities that support information, communication and knowledge exchange in the organization. The purpose of the study is to investigate how employees in one specific public library perceive and use the intranet in their daily work. The theoretical framework takes its point of departure in two complementing models regarding the implementation, development and management of intranets and a model of a multi perspective view of the intranet as a shared information space for content, communication and collaboration. The study is based on interviews with eleven of the intranet users, whom with the aid of an interview guide have been asked questions regarding goals, implementation, content, design, applications and advantages/disadvantages with the intranet.

Stadsmodeller i 3D är en allt mer bidragande faktor inom GIS och vinster i tid för räddningstjänst vid användandet av 3D-GIS har påvisats. Arbetet presenterat i rapporten behandlar nätverksanalyser i 2D och 3D och har utförts på uppdrag av Gävle kommun.  Uppgiften har utförts med två huvudsakliga mål. Det första målet var att jämföra processtiderna för Dijkstras sökalgoritm mellan nätverk (ett mindre baserat på förvaltningshuset i Gävle och ett överdimensionerat nätverk) i 3D och motsvarande nätverk i 2D, för att sedan avgöra skillnaden. Det andra målet var att utveckla en applikation som tillåter vägledning i 3D för besökare från reception till önskad anställd och få rutten visualiserad i en 3D-modell. Arbetet har i huvudsak genomförts med ESRI ArcGIS Desktop 10 och ArcGIS Engine 10 Developer Kit.

Denna rapport redogör för implementationen av ett bokningssystem med integrering av Google Calendar API. Uppdraget var främst till för att utvärdera potentialen av ett bokningssystem där Google Calendar användes som scheman för personalen. Projektet skulle även kunna användas som ett grundsystem för att skräddarsy bokningssystem för olika företagsmodeller.Det slutgiltiga systemet blev en hemsida för tidsbokning, ett Web-API för kommunikation med hemsidan, integration av Google Calendar API för att hämta och lägga till tidsbokningar på personalens scheman samt lagring av data i en databas..

The last couple of years the use of Internet has changed in the way that the web pages can be affected of the person that uses them. Because of this dynamic Internet technology has emerged that makes it possible for a web page to receive information from a web browser. This information can then be used to affect the appearance of the page. PHP and ASP are two dynamic Internet technologies. They are integrated in HTML and are executed on the web server.

The tourism industry is a young industry in Sweden but important for the economy and a large part of the field is mountain tourism. Marketing a place is called destination marketing, which has become a huge phenomenon and an important part of efforts for promotion in the tourism industry. The entrepreneurs in the tourism industry are an important part, as these are a big part of the destination. Their marketing and communication becomes a force to reckon with in order to attract tourists to the area. The purpose of this study is to examine how entrepreneurs through destination marketing reach their target market and with the intention to identify marketing channels that the entrepreneur uses.

Future emission legislation puts great emphasis on increasing the efficiency of the engine, thereby reducing fuel consumption. The tribological contact between cylinder liner and piston ring is where an great amount of energy is lost due to friction, and by reducing these losses an reduction in fuel consumption can be achieved.The aim of this thesis was to evaluate the tested piston ring coatings against a plasma sprayed cylinder liner and rank these combinations of materials for friction and wear resistance. The coatings that were tested was Cr + Al2O3, (Al,Cr)N, two types of CrN and WC / C.The experimental tests were performed with a so-called pin-plate, where used oil with addition of an acidic mixture of sulfuric and nitric acid to mimic the acidic condensate formed when exhausts recirculate, were added with a continuous flow. The results were then analyzed by weighing, studies by optical microscopy and scanning electron microscopy (SEM) and profile measurements.The results from each material combination were that the plasma coated cylinder liner wears too aggressively in order to yield a ranking of the piston ring coatings based on the parameters of friction and wear resistance. It is therefore proposed that an alternative coating on the cylinder liner should be developed, lacking the large abrasive wear on piston rings and that can withstand the corrosive environment resulting in engines equipped with EGR.

The incineration of waste is steadily increasing in Sweden and so is the production of ashes. The bottom ash has for many years been used as construction material in landfills. Now many of the nation's landfills are closed and there is a great need to find another beneficial use for the ash. Bottom ash is a gravel-like material and with its material properties it can replace natural gravel in parts of roads and surface constructions. Today this use is only approved within landfill areas where leachate is collected and checked.

This report relate a concept study that consider a number of different proposals to improve the overcharging system in BAE Systems Ha?gglunds tracked vehicle series BvS10, to maintain sealevel power at extreme altitude.At high altitude the power losses beacuase of the air density that decreases, which results in less fuel can be burned. The decreasing of air density also gives rise to fatigue failure of the turbocharger unless power is reduced.The proposals shall be as required by BAE Systems Ha?gglunds economically sustainable and defensible from a packing perspective. That means the selected solution must have a reasonable price tag and at the same time a minimal impact on adjacent components.The basis for this thesis is based on benchmarking of both the auto industry as the flight industry, to find inspiration and tips for improvement.Some of the concepts have after gathering facts and calculations been excluded while other solutions has been considered as workable and thus interesting for BAE Systems Ha?gglunds.Initially the current turbochargingsystem was analyzed in order to determine the starting point and thus be able to fix the current problems surrounding high altitude driving.

This thesis aims to discuss how an information system and its users may adapt to each other. The main discussion is how to create an information system that is adaptable without losing its organising properties. The thesis uses a holistic approach to the topic and the areas being dealt with are information architecture, interactive information retrieval and information searching. The practical work consisted of constructing a database for Autoliv?s Research and Development branch.