This is a thesis presents a differential gear which is found in a tracked vehicle called BvS10. The tracked vehicle is manufactured by BAE Systems Hägglunds AB in Örnsköldsvik, Sweden. The differential gear has a bolted house. The differential meets the requirement specifications, but the problem is that the bolts are sheared off because of the extreme torque that the differential is exposed to resist.Previous report on the differential show pictures of bolts which have been sheared off at the threads. This report is also includes three lists that explain seven different proposals which some are approved and some are not, and the report also presents the force, tensile, and shear stress.In a bolted connection there is both axial tension stress and radial shear stress, which can lead to wear out and broken bolts.

Animal welfare is of increasing concern in present society. In commercial pig farming, animal welfare problems are common. One of the causes for these problems is the barren environment in which pigs are housed, which can cause oral manipulation of pen mates. Providing straw might be one solution to this problem. Another solution could be reached through genetic selection.

The purpose of this thesis is to compose a way for a small IT-company to communicate with their costumers and include them in the development of their IT-solution. The ambition with this study is to make this information strategy applicable to other small companies with the same problem.The empirics is built on literature studies and qualitative interviews which leads to a design proposition and try-outs with the target group. The results lead to a newsletter where news and information from the company could be presented simple and clear..

I denna rapport har vi utforskat olika metoder som löser handelsresandeproblemetmed hjälp av rumsfyllande kurvor. Vi har utgått från en klassisk algoritm av Bartholdioch Platzman och förbättrat den med avseende på lösningslängd med två egna algoritmer.Vi har under arbetets gång utvecklat programvara som använder dessa algoritmer.Vi har undersökt körningstid, lösningslängd och stabilitet för de olika algoritmerna ochanalyserat resultaten. Rapporten innehåller även en inledande teoretisk beskrivning avplanfyllande kurvor och NP-komplexitet..

The purpose of this project has been to cut production costs for the fascia panels ofGetinge?s largest autoclaves. The cost for the stainless steel plates currently used is veryhigh. An alternative material solution could cut costs significantly.In addition, improvements have been made to the instrument tower which is a central partof the fascia panel. As a result of the new modular design in a new material theinstrument tower has been improved in several aspects..

Eco-design is all about improving products environmental performances throughout the products lifecycle by including the environmental aspect into the product development process. There are a large number of different tools that can be used for this, but there are several factors that can affect which one will be the best to use. Some tools for eco-design takes comprehensive studies and can only be performed by experts, while some tools can be used more time- and cost efficient and with basic knowledge. The choice of tool should be based on the company?s situation.This report describes the research of how the design and furniture company Blå Station could include a tool for eco-design in their product development process.

Hammarby Sjöstad is a new district in Stockholm with high environmental standard. Stockholm Water Company evaluates a local wastewater treatment plant with cutting edge technology. The first step is an experimental treatment plant (Sjöstadsverket) with four parallel lines of treatment, each with a capacity to treat wastewater from 150 persons. Within the membrane technology subproject the possibility of using reverse osmosis (usually called RO) to regain nutrients is examined.Reverse osmosis separates the incoming water in a clean permeate and a concentrate that, as the name indicates, is a more concentrated version of the incoming water. Using this method in wastewater treatment, a solution high in nutrients can be obtained without the use of chemical precipitation agent and with no production of sludge.

A possible way to reduce pollution and slow down the process of global warming is to increase the usage of renewable energy sources. One of these renewable energy sources is solar power. With the aid of solar panels and solar cells the energy from the sun can be transformed into both heating and electricity. The requirement to use the sun in this fashion is a suitable surface, for example a big roof, an angle between 40-60 degrees and that the surface should be exposed to the south. Almost every farm meets these requirements.

This paper is based on a study seeking answers to questions about how the judges at district courts look at mediation as a way to deal with custody and visitation disputes between parents who do not live together. The questions posed in this study are: When is a mediator appointed? What result do judges expect to mediation? What do the judges say about how a mediator should work? What are the judge?s opinions about the lawyer?s role in these cases? Finally, how do the judges define the children?s needs and how do the judges check that the solution is best for the child? The study also aims to compile theories of mediation, to create new knowledge and to possibly develop new research questions related to mediation. The study is a qualitative case study with law sociological and abductive approach. The interviewed judges all have a lot of experience in family law cases.

Syftet med examensarbete är att studera och ta fram dels i vilken utsträckning virtuella bygg-metoder används inom infrastrukturprojekt idag och dels en arbetsprocess för att använda byggnadsinformationsmodeller (BIM) och 4D-modellering från skisstadiet till färdiga handlingar. Arbetet med denna rapport påbörjades med en kartläggning av vilka programvaror skribenterna hade att tillgå vid sitt universitet, i detta fall Autodesk Infrastructure suite 2014. Examensarbetet är utfört genom fokusgruppintervju med personal från Trafikverket investering. Projektledare, arbetsledare och projektingenjörer valdes att intervjuas för att ta reda på hur mycket 4D, BIM och digitala 3D-projekteringsmetoder egentligen används inom Trafikverket idag. Efter intervjuerna med fokusgruppen så intervjuades ett antal experter inom virtuellt byggande.

When a decision is to be made on what long term strategic forest management plan to use, consideration must often be taken to multiple objectives. Such decisions are very complex and a promising approach to handle them is by Multiple Criteria Decision Analyses (MCDA). The study is based on the problem that the MCDA that have been implemented into forest management planning have only had capacity to compare and evaluate a limited number of management plans; which means that there is a risk the most suitable plan is missed. The aim with this study was to test the applicability of combining the MCDA tools: the Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) and the Analytic Hierarchy Process (AHP) for including consideration to multi-objectives into strategic forest management planning. The study was based on the process of creating and selecting a management plan, using Heureka PlanWise, suitable for all the major objectives found in the forest holdings of a municipality in northern Sweden.

This rapport aims to examine the difficulties in presenting a complex game in a way that will invite new players by making the game more accessible. We discuss and present our process on how to create an application named ?Digi?-war that is easy and fast to, both, learn and use. Our solution to this issue includes RFID-tags and readers together with four buttons, as input devices. This simple input device, placed in a gun-type control unit, aims to provide an intuitive interaction..

According to a decision of the European Commission, measures are to be taken to reduce the use of energy in the EU. The goal is to reduce it by 20 % compared to the current use. This shall be done to the year 2020 (European Commission, 2011). One industry that use large amounts of energy is the construction of buildings which account for almost a third of the energy use (Brogren, 2012). The major part of the energy that is used in the construction industry is not used when the buildings are built, but rather during the rest of their subsequent lifetime.

In this thesis a prototype board for data aqcusition is designed and manufactured. The board is compliant with Compact PCI Express and it can sample an analog signal with two time interleaved ADC:s. Furthermore, the board is also equiped with one FPGA for the possibility of signal processing. The thesis also include a study for investigation what is needed for a total solution for data aqcusition, represention and managing the sampled data with LabView..

A large amount of our time is spent indoors in an artificial climate. To make the experience pleasant there are requirements on the ventilation and the heating system. At the present time the most common form of heating is a radiator system complemented with a ventilation system. A ceiling heating system with combined heating and ventilation can replace the two separated systems. The benefit with a ceiling heating solution is that it saves space since the radiator system is no longer needed.