Three-dimensional computer graphics enjoys a wide range of applications of which games and movies are only few examples. By incorporating three-dimensional computer graphics in to a simulator the simulator is able to provide the operator with visual feedback during a simulation. Simulators come in many different flavors where flight and radar simulators are two types in which three-dimensional rendering of large terrains constitutes a central component.Ericsson Microwave Systems (EMW) in Skövde is searching for an algorithm that (a) can handle terrain data that is larger than physical memory and (b) has an adjustable error metric that can be used to reduce terrain detail level if an increase in load on other critical parts of the system is observed. The aim of this paper is to identify and evaluate existing algorithms for terrain rendering in order to find those that meet EMW: s requirements. The objectives are to (i) perform a literature survey over existing algorithms, (ii) implement these algorithms and (iii) develop a test environment in which these algorithms can be evaluated form a performance perspective.The literature survey revealed that the algorithm developed by Lindstrom and Pascucci (2001) is the only algorithm of those examined that succeeded to fulfill the requirements without modifications or extra software.

Due to recent legal enactments regarding carbon dioxide emissions, the car industry is facing higher demands. An effective way of reducing these emissions is to minimize the weight of the vehicle. This thesis constitutes a feasibility study on whether or not it is applicable for the car industry to utilize an inner floor structure comprising composite materials. The principal was the projectSåNätt, in which the main participant was Volvo Cars Corp. In consultation with a reference group, consisting of delegates from the industry and KTH, a specification of requirements was produced.

Bakgrund: Den psykiatriska vården har under de senaste 100 åren utvecklats, däremot har synen på psykisk ohälsa inte följt samma process. Allmänheten ochsjukvården har idag en negativ attityd gentemot personer med psykisk ohälsa på grund av okunskap som resulterar i stigmatisering. Att dettaexisterar i sjukvården är ett problem eftersom det är det största forum dit personer med psykisk ohälsa kan vända sig för hjälp. Syfte: Attbeskriva sjuksköterskestudenters syn på patienter med psykisk ohälsa. Metod: Kvalitativ empirisk studie med semistrukturerade enkätfrågor.

Title: What drives the customer's choice of packaging and which factors influence the customer's packaging cost? ? in the automotive and manufacturing industriesAuthor: Lena AnderssonSupervisors: Annika Olsson, Division of Packaging Logistics, Lund Institute of TechnologyHelena Claesson, Volvo Logistics ABProblem: Which parameters are important for logistic people to think of when they are going to choose a package?Which cost factors are included in the packaging cost?What kind of added value can an emballage supplier provide their services with?Purpose: The purpose of the project was to study the parameters that drives the customer's choice of packaging and the factors that influence the total packaging cost. The study also consists of a valuation of what an emballage supplier can offer to add value to their services.Method: The study is based on interviews with people who are working at Volvo Logistics and Volvo Car Corporation. Volvo Logistics provide their customers with standard packaging material, which they own and administrate. Volvo Car Corporation is one of their customers.

This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.

In many products a compromise between ground clearance and the required space to store the product has to be made. This problem attracted the attention of the authors of this thesis.The objective of this project is to develop a functioning solution to a foldable wheel. The solution should be applicable to several types of product groups. A limitation for this work has been made so that the work only covers solutions for lighter vehicles.The purpose is to drive this project forward, so that a solution can be found. Furthermore the purpose of the report is to clarify how the authors proceeded to design and construct the wheel according to a fixed specification.

Introduction: Anxiety and depression are common among patients enrolled in psychiatric outpatient care. Ear Acupuncture is an alternative form of treatment that has been shown to relieve anxiety and depression in previous studies.Aim: To evaluate ear acupuncture as a group treatment for depression and anxietyMethod: A psychiatric outpatient clinic has been offering group treatments with ear acupuncture for anxiety and depression for 5 weeks. Participants of the study have answered self-rating scales Montgomery Åsberg Depression Rating Scale, Beck Anxiety Inventory and Sheehan Disability scale before and after the treatment period. Material was collected in the period 2008-2012 and has been analyzed in SPSS.Results: Data from 31 patients were included in the study. The results from the study showed a significant difference, between the measurements before and after treatment, with a reduction of the average values in the three different scales.Summary: From this study, it is difficult to draw any conclusions about the effect of ear acupuncture.

Mixade vårdsalar, det vill säga där man blandar män och kvinnor, är något som förkommer på sjukhusen runt om i landet och bör uppmärksammas utifrån patientens perspektiv då denne är i beroendeställning av sjukvården och dess vårdmiljö. Det blir allt vanligare att sjukhusen idag har mixade vårdsalar, detta oftast på grund av tids- och platsbrist. Studiens syfte var att beskriva patienters upplevelser av att vårdas på mixad vårdsal på en akut sjukvårdsavdelning inom nedre kirurgi. Studien var kvalitativ med fenomenologisk ansats. En intervjustudie med femton patienter som hade vårdats på mixad vårdsal genomfördes och i resultatet framkom att majoriteten av patienterna upplevde det positivt att vårdas på mixad vårdsal.

It's an everyday experience shared by many that nature can be of help in relieving pain, reducing stress, support mental recovery etc. In the last three decades or so this experience has also found support in a large number of scientific investigations. Among other things the experience of nature has been shown to reduce stress and pain in patients and to boost concentration and reduce impulsive behavior in children. Most of this research however has mainly been concerned with the visual modality. In this thesis the aim has been to focus on the auditory modality in this context by trying to reveal some effects on people from the exposure of nature sounds played indoors in three different environments: a grammar school class room, a kindergarten play room and a post-surgery wake up room at an intensive care unit.

Introduktion: Ambulanssjukvården har sedan 1800-talet förändrats, från att vara ett rent transportmedel är i dagsläget ambulanserna utrustade med högteknologisk utrustning och sjuksköterskeutbildad personal. Ambulanssjuksköterskor utsätts ofta för situationer som kan upplevas psykiskt påfrestande. Dessa situationer kan, om de inte bearbetas, leda till sämre mental hälsa med risk för sjukskrivningar och förtidspensionering.Syfte: Syftet med denna studie var att beskriva ambulanssjuksköterskors upplevelser av stöd på arbetsplatsen efter psykiskt påfrestande situationer i arbetet.Metod: Denna studie har en kvalitativ ansats med en beskrivande design.Resultat: Ambulanssjuksköterskor upplever olika situationer som psykiskt påfrestande. Upplevelsen relateras ofta till den egna livssituationen och tidigare erfarenheter. Stödåtgärder finns tillgängliga från arbetsplatsen efter psykiskt påfrestande situationer, men ambulanssjuksköterskorna upplever att ansvaret ofta ligger på individen att söka stöd.

Over a long time psychology was focusing on human frailties and mental diseases. In 1998, positive psychology was introduced - the scientific study of strengths, well-being and optimal functioning. Theory and research in the area has identified 24 character strengths, in which each individual owns and celebrates a number of top strengths, signature strengths. These strengths have been shown to be important in achieving happiness and well-being. The purpose of this study was to investigate the relationship between character strength and psychological well-being, job satisfaction, harmonious- and obsessive passion and stress.

The aim with this study is to examine and analyze how the employees at two residential care homes for unaccompanied refugee children work with the children during their pending decision for asylum in Sweden. The purpose is to gain insight into the employees? daily work with the target audience and how they handle decisions with the children. The method to collect data is to carry 6 interviews with the employees at the residential care home. The interviews were semi-structured with purpose of letting the interviewee lead the content of the interview.

This report aims to examine the design of a passive house. The design addresses the selection ofmaterial, sizing and selection of both building services systems and building technical features suchas load-bearing framework and moisture control. Interior layout is designed for a family of twoadults and one child.A big part of the report is devoted to an in-depth comparison of three different wall constructions ofpassive house standard. The structures that have been compared are a lightweight timber structure, aheavier concrete structure and a sandwich wall of the brand Weber Leca. The report covers variousaspects such as air flow, wall thickness, the risks associated with the construction, U-value, thermalbridges, power consumption, price, and assembly costs.

The thesis presented in this report has been made on behalf of Scania and their basic frame design department with the subject to solve an implementation of a weight sensing system in the chassis. The system is supposed to be implemented in the seat springs, and the reason for this is that all the force will have to go through the weight sensing transducers. With all the force going through the transducers the weight sensing system will not be sensitive for the differences in tolerances from manufacturing. The transducers could be pre-calibrated to avoid a calibration of the whole vehicle after it?s completed from the manufacturing line.Weight sensing systems is today a reality in trucks with air springs.

Bakgrund: Endometrios är en godartad kronisk sjukdom som kan drabba kvinnor i alla åldrar. Symptomen är både av fysisk och mental karaktär och upplevs väldigt individuellt. Fysiska symptom i form av svår smärta uppstår före menstruationen och ökar sedan i intensitet. Mentala symptom kan vara förändringar i stämningsläge. Sjukdomen endometrios kan lindras genom hormonbehandling och kirurgi.