Volvo Construction Equipment is a world leading company in construction machinery. Tomaintain the best products, development is prioritized. The master thesis regards sound reductionof the hydraulic system on a wheel loader. The background to the master thesis is asimulation made on the hydraulic system, performed autumn 2005. The result of the simulationshows that the energy of the pressure ripple is reduced when the paralleled hydraulicpumps are phase shifted and reduces each others pump pulsations.

Leaders in modern working life are confronted with frequent use of temporary groups. The purpose of this study was to examine possible reasons for swift trust towards leaders in temporary groups. The target group of the study was school employees. An opinion poll was carried out in the occupational group (n = 35) which made it possible to make statistical comparisons. The result showed that the following aspects were important for the development of swift trust in leaders: personal attributes, image related attributes, competence and experience, leadership and also social competence.

This paper presents techniques for speeding up commonly used algorithms forbounding volume (BV) computation, such as the AABB, sphere and k-DOP. Byexploiting the possibilities of parallelismin modern processors, the result exceedsthe expected theoretical result. The methods focus on data-level-parallelism(DLP) using Intel?s SSE instructions, for operations on 4 parallel independentsingle precision floating point values, with a theoretical speed-up factor of 4 ondata throughput. Still, a speed-up between 7?9 are shown in the computation ofAABBs and k-DOPs.

The purpose of this thesis work is to create a prototype for an augmented reality application that isaimed to support service technician when performing service and maintenance of machines andengines. The prototype will be used for investigating what technical limitations there is and toestablish basic usability for the user interface. The method that is used is user studies and analysis toevaluate use cases and user stories. An iterative work process is then applied for design and theprototype is continuously user tested.The resulting prototype uses a Samsung Galaxy Tab 2 running on Android operating system. Theframework used for augmented reality is NyARToolkit which handles marker recognition andconnections to Android.

AbstractThe aim with the study was to describe and to compare nurse students' views about importantcaring behaviors in order to give good caring. An empirical comparative study wasimplemented on a college in the middle of Sweden. Nurse students in the beginning and at theend of their education sorted and prioritized 50 caring behaviors (CARE-Q). The result showedthat the students' description of important caring behaviors has many similarities. However, theresult also showed that there were significant differences between the student-groups where thestudents at the beginning of their education rated several caring behavior as significant moreimportant than the students in the end of their education.

Seventy-two working horses (they had been ridden with bit and bridle within the last two weeks) were examined in the oral cavity. Findings and status were noted. The horses were randomly chosen among individuals without clinical symptoms from the mouth and gastrointestinal system. The result showed that 93% of the horses had changes in the mucus membranes, 86% in the form of ulcerations. The P2 region was most commonly affected followed by wounds more caudally in the mouth (P3-M3 region).

The aim of this qualitative study was to investigate the participants experiences of a parent support group and the effect of their participation on their parental role from a learning perspective. As the parent support group takes place as a group activity, the focus was on the individual learning processes which, in turn, are influenced by both the group itself as well as the leaders of the group. The empirical data was collected from a focus group interview with four mothers, and analyzed using empowerment and coping theories. Based on the participants´ narratives, the result showed that the parent support group had a great social and pedagogic effect on the participants. As a result of the received knowledge in the group from both leaders as well as from other participants, they felt less stressed and more confident in their parental role.

In this study we try to focus on the costs for wear parts on different type of soil tillage machines and at Väderstad Rapid drilling machine. We have studied some of the leading types of cultivators and disk harrows. Among the cultivators we have investigated Väderstad Cultus, Dalbo Dinkomax, Horsch Tiger and Terrano. At disk harrow we have looked at Amazone Catros and Väderstad Carrier. We have made more detailed study on costs for wear parts, working depth, driving speed and diesel consumption.

The purpuse of this study was to develop knowledge about learning condition that are to be in a context of interaction with persons that have Autism Spectrum Disorder diagnosis are included. The pre-understanding has evidence in that the public very often has a lack of knowledge in understanding persons with this kind of disabilities that can put the social interplay in disharmony. The phenomenological approach was used to reach the essence of the learning influence processes. Seen from the respondents experiences of interaction as a help for the informal learning in a working context. The purpose was to see the result of interplay and the effect of learning condition and to see what help those respondents acctually have experienced.

Background: Good health at community and individual levels are key policy priorities. These priorities can be shown through supporting parents about various different healthy lifestyle choices. In order to know where interventions are needed, it is of interest to study how parents generally feel and how they perceive their parenting.Aim: To study how parents rate their own health and parenting skills, and examine whether there is any correlation between perceived general health and perceived parental competence.  Further, this study will show whether there is a correlation between rate of perceived general health and rate of perceived parental competence when it comes to gender.Method: 64 questionnaires were collected at strategic open kindergartens in the municipality of Uppsala. The questionnaires were distributed to the parents present and who chose to participate in this study.Main result: The result of this study shows that parents have a high rate of general health.

Warmer climate is a driving factor to species expansion northwards. Expansion to new areas can result in escape from natural enemies, resulting in reduced levels of mortality and thereby potentially increasing the rate of expansion. The most important parasitoid species attacking butterfly larvae belong to the families Tachinidae, Ichneumonidae and Braconidae. The aim of this thesis was to investigate parasitism and difference between populations in established area and newly colonized area for the European map butterfly, Araschnia levana, in order to examine if the butterfly has escaped from some natural enemies. In 1982 the first European map butterfly was observed in Sweden and has now established up to middle Småland.

The purpose of the essay is to make a comparative study between the Christian value parity and the Christian Democrats. To answer the purpose the following questions are asked: What are the similarities and differences between party programs? What are the similarities and differences in their origin? The theory used is based on Reidar Larlsson political ideologies, there were two ideologies used to apply on the result: conservatism and liberalism. The method was ideologies analysis. The result of the study shows that there were some similarities and some differences between the part programs.

The purpose of this study was to examine how youth useFacebook and how Facebook perceives construct their own identity. Anotherquestion was if the construction of the self-identity is different between thegenders.The study is based on empirical material that has been collected by usingquestionnaires. The questionnaire was handed out in three different classes in3rd grade in secondary school in southern Sweden. The analysis in this studywas based on two different kinds of theories, Erving Goffman?s social theory ofdramaturgical analysis and stigma and Yvonne Hirdman?s gender studies.

The Swedish Government has set a target to reduce energy consumption through energy efficiency within the construction and real estate sector. The purpose of the study is to examine how energy efficiency within this sector could affect the district heating volume in the future, on basis of Vattenfalls district heating system in Uppsala.An Excel model has been created to study how energy effficiency measures affects district heating demand in buildings by 2045, based on technical and economicalconditions. Furthermore, an interview study has been conducted to examine incentives for district heating customers to invest in energy efficiency measures.Result of the Excel model shows that the district heating volume of Vattenfall in 2045 is expected to 931 GWh, which corresponds to a volume decrease of 10,6 %. Based on the study?s theoretical framework only 15 %, 1 024 GWh, of the technical-economical potential is assumed to be implemented.

The impact of the distribution in the soil volume of two farm manures on the net mineralization and immobilization processes of nitrogen were studied in an incubation experiment. Cattle slurry and broiler litter were placed in the soil with three procedures for incorporation including placement on top of the soil (TOP), in the middle of the soil (MID) and mixed homogenously with the soil (MIX). During the two weeks of incubation, few significant differences in net mineralization were seen between TOP, MID and MIX. However, there was a tendency that MIX led to a larger net immobilization of N than placement at one point (TOP and MID). This is also the result in the literature.