Asymptotically flat spaces are widely studied because it is one natural way of describing an isolated system in general relativity. In this thesis we study what happens to the Lanczos potential at spacelike infinity in such spacetimes. By transformations of the Weyl-Lanczos equation, we derive expressions for the limiting equations on both the timelike unit hyperboloid, and the timelike unit cylinder. Finally the Newman-Penrose formalism is used to get a component version of the equations..

Evaluation of machinery costs is necessary for selecting appropriate farm machinery. Timeliness cost due to untimely operations is an important component of machinery costs. Timeliness costs can be high for crop sprayers, since pesticide application must be carried out within a short time interval. This Master thesis investigated the timeliness cost and the probability of a suitable workday for spraying. Timeliness factors were estimated for four different crops (oats, spring wheat, winter wheat and barley) using historical weed trial data.

The essay initially intends to find adequate models to describe and forecast monthly data for the Swedish Consumer Price Index sub group Clothes and Shoes 1986-2005. The time series observations during 2006 are considered ?out of sample period? which is used to evaluate the forecasts. The purpose is to perform time series decomposition and to investigate and analyzethe seasonal pattern. The Box-Jenkins approach is used to find adequate ARIMA models.

This study analyses social age as a phenomenon and if unaccompanied refugee children has a social age that, according to the Swedish culture, do not correspond with their biological age and if so is, the reason for that. Furthermore, our study has discussed the potential consequences of the effects for the unaccompanied refugee children and the social age when interacting with Swedish society. According to our study, the social age is effected by other factors besides cultural norms, values and role expectations that a society has on a specific biological age. The results in this study shows that social age is a vital component to someone?s identity.

Spitz nevus was first described by Sophie Spitz in 1948 as juvenile melanoma. The lesion is a benign melanocytic tumor, which consists of epiteloid- and spindelshaped cells. Histological is spitz nevus difficult to distinguish from malign melanomas and spitzoid melanomas. Loss of symmetry, loss of maturation in the deep component, nuclear polymorphism and hyper chromatic nucleus are features which can be found in melanomas. Some of these features are often seen in spitz nevus.

This M.Sc. thesis is a material application evaluation commissioned by the advanced body engineering department at SAAB Automobile AB. The purpose of the thesis is to evaluate implementation of the innovative sandwich design material Hybrix into an automobile body. Today the most commonly material used in the body is galvanized steel sheets and by shifting material to Hybrix several problematic issues have to be dealt with. Hybrix is an innovative sandwich sheet that inherits thin stainless steel face sheets and a stainless steel fibrous core.

Syfte: Huvudsyftet med denna uppsats är att utröna om komponentavskrivning ger en mer rättvisande bild av periodisering av kostnader.För att uppfylla huvudsyftet har vi fyra delsyften, det första är att redogöra för vad regelverket och experterna anser om ämnet. Det andra är att undersöka om komponentavskrivning uppfyller de kvalitativa kriterierna genom en bättre kvalitet på redovisningen. Det tredje är att illustrera de för- och nackdelar som finns i och med komponentavskrivning. Det fjärde vill belysa hur det kommer sig att vissa företag väljer att tillämpa anskaffningsvärdemetoden med avskrivningar, komponentavskrivning, medan andra väljer att redovisa till verkligt värde..

This report describes the manufacture and control of a flying platform. The report describes the basic and fundamental theories required to get the platform flying. It touches on subjects such as A/D-conversion. PWM-control and PID-control. The sensors used in the platform are a gyro and an accelerometer.

Due to higher standards of living around the world, greater industries and larger infrastructures causes an increase of the global energy consumption. This harvest of energy puts a great stress on the global environment. With this development, it becomes increasingly important to utilize energy resources in the best possible way.Fans are components that are often used in the industry and in households. A common problem is that the fan is oversized. An oversized fan causes an excessive flow, which has to be adjusted in order to achieve the correct flow.

The overall aim with this study is to elucidate outdoor education as an education method and on the basis of that illustration to examine active educators vision on it as a way to motivate students' learning. This study is based on a literature component and a qualitative study through interviews five teachers.The results of the interviews show how to interpret the motivation and how to work with students' motivation. As well as outdoor education as part of the activity.  The interviews show the importance of outdoor education can be to increase students'motivation for learning. They also show the importance of outdoor education is for student learning and test scores have shown the effectiveness of student learning through outdoor education.

The purpose of this thesis was to illuminate how companies work with their brand identity and particularly how it is applied in their positioning. The empirical data has been collected through interviews with two companies in Sweden working with brand identity as a stated strategy. The study shows that companies discover, develop and build their brand identity based on their core identity and core values. The core value can be strengthened through customer satisfaction surveys. In order to develop the brand identity in companies, management has to be aware of their brand person- ality, as an essentiality for survival.

Approximately one third of all patients in primary care have a psychosocial component to their illness that requires adequate professional treatment. However, primary care is insufficiently prepared for these patients. The aim of this case-study was to evaluate a pilot project in primary care offering psychotherapy as a treatment alternative. The data collected includes 1) data from 352 referred patients regarding demographics, diagnosis, treatment duration and pre- and post health status, 2) a patient-satisfaction questionnaire and 3) interviews with six therapists and five medical doctors. The treated patients improved significantly and showed a high degree of satisfaction.

Examensarbetet har utförts på Volvo Construction Equipment AB Component Division i Eskilstuna. Företaget tillverkar drilvlinekomponenter till bland annat hjullastare och ramstyrda dumpers. Företaget befinner sig i en expanderande fas med ökande volymer och på vissa håll har taket för bearbetningen nåtts. Kopplingsaxeltillverkningen är en flaskhals i företaget och behöver ses över för att möta de ökande volymerna. Uppgiften har bestått av att utforma en ny layout till bearbetningsgruppen för kopplingsaxlar.

This report describes the manufacture and control of a flying platform. The report describes the basic and fundamental theories required to get the platform flying. It touches on subjects such as A/D-conversion. PWM-control and PID-control. The sensors used in the platform are a gyro and an accelerometer.

Syftet med föreliggande undersökning var att identifiera faktorer som bidrog till känslan av "yrkesstolthet" hos anställda vid Försäkringskassan Dalarna inkluderande personalens tillfredsställelse med yrkesrollen. Sammanlagt 163 personer, 123 kvinnor och 40 män, från 25 till 66 år (X= 49,8 år) deltog i undersökningen. Denna genomfördes med hjälp av General Nordic Questionnaire for Psychological and Social Factors at Work (QPS Nordic) inkluderande 123 frågor samt 9 frågor gällande yrkesrollen. Frågorna besvarades väsentligen med hjälp av en 5-gradig skala av Likert-typ. Huvudresultatet uträknades med hjälp av Cronbachs Alpha, Principal Component Analysis och multipel regressionsanalys.