The purpose of this project was to further develop and complete a quadcopter that had been built in an earlier course at KTH, so that it could be used for demonstration and education at the school. The quadcopter was at the beginning of the project completed when it came to hardware, and there was some software functionality implemented but no system for automatic stabilization. The main goal of the project was to implement such a system, and to combine it with the previous functionality to make the quadcopter operable and able to fly. To create a functioning and stable ground multiple basic software features has been implemented, and on top of that additional software to improve the safety, stability and functionality. The most important part is the control system that is responsible for converting sensor and control signals to suitable motor values.

This study is an attempt to examine the information needs and use in everyday tasks inthe work environment of community health nurses. The purpose of this paper is double toexamine the information need and use of the community health nurses and to test and validatea method and a theory for the studying of information need and use in workers everydaytasks adapted from Byström and Järvelin (1995). Most of the data were collected throughdiaries kept by the informants in close relationship to the problem situations and were analysedqualitatively. Furthermore a literature survey was made in nursing infomatics and informationscience and it showed that there is no absolute common ground between the disciplinesin the way they use the information concept.The theory and method were validated in a broad outline and were very useful in the study ofcommunity health nurses' information needs and use. The study also shows that the contextof community health nurses plays an important role in the nurses information behaviour..

Low stumps represent on their own up to 80% of the dead wood remaining on clear cuts and therefore supply suitable habitat for saproxylic insects i.e. insects depending on dead wood for their survival. Recent stump harvesting activities threaten this substrate of ecological importance and increase the anthropogenic negative impacts on these species. Because of technical and environmental reasons (nutrient leakage, erosion) guidelines for stump harvesting recommend to retain stumps standing in wet parts of clear cuts. However, stumps in wet positions might not be a satisfactory substrate for saproxylic insects and therefore might not be as much used as stumps in dry positions.

The purpose of this essay was to study which arguments social workers used in the basis of their estimation concerning young people of the age 13-18 given an aid, a contact person (swe. kontaktperson). The purpose was also to describe how the legal paragraph, regarding contact person, is regulated and then compare the arguments made by the social worker with the intentions expressed by the legislator. To answer our purposes we studied the law and the intentions expressed by the legislator, which is the foundation for the legal paragraph that regulates contact person, 3 chap. 6 §.

The aim of this study was to investigate preschool children's perceptions of trees in and it was done through qualitative interviews. The children were drawing trees and told me what the tree needs to grow and what happens to the leaves in autumn. In a playful way, they learned more about trees and the purpose was also to examine whether they had acquired new experiences and thoughts on the trees, photosynthesis and decomposition. Then the children were interviewed again to see if their answers were different. The results showed that the children gave different answers at the second interview.

Core strength is important in order to be able to do all types of daily activities. One way to exercise ones core muscles is according to the pre- choreographed program Fokus. Previous studies have shown that core training gives better balance and stability in the core and also improved techniques, body awareness and control. Aim: To evaluate the core endurance strength, the balance and the studied individuals self estimated body awareness and control after six weeks of training according the pre- choreographed program Fokus. Methods: A total of 14 people volunteered to participate in the study, six of which completed the study.

Core strength is important in order to be able to do all types of daily activities. One way to exercise ones core muscles is according to the pre- choreographed program Fokus. Previous studies have shown that core training gives better balance and stability in the core and also improved techniques, body awareness and control. Aim: To evaluate the core endurance strength, the balance and the studied individuals self estimated body awareness and control after six weeks of training according the pre- choreographed program Fokus. Methods: A total of 14 people volunteered to participate in the study, six of which completed the study.

The Stockholm office market segment have for a long time been considered a safe havenwhen it comes to withstand negative turmoil in the form of rental compression due toeconomic fluctuation, especially in the CBD demographic. Recently however, a large numberof banks and institutions, amounting to some 200000 square meters, have decided to relocateto more peripheral locations with the aim of cost reductions on rent. This mass exodus isstudied with focus on rental dynamics as the result of increased vacancies. Other variables arestock changes and employment. The method is econometric combined with an interviewseries.

Study objects: Three different productions companies which the authors have chosen to be anonymous. Purpose: The purpose with this study is to examine why production companies choose to use 3D-animations in television commercials, and what different kind of aspects affects their decisions. Theoretical: The theoretical chapter reviews the history of 3D-animation andtelevision commercials and other fields that will be relevant laterin the analysis and discussion. Method: A case study has been made on three different companies, two of the companies are active in post-production and the other one is active in the consulting area. Data was collected through semistructured interviews with two of the companies.

Wind damages next to strip roads in 1st and 2nd thinning in Boxholm, Östergötland Anneli Fransson, SLU, inst f sydsvensk skogsvetenskap, Examensarbete no 108 Wind damage is something we are all familiar with since the storms Gudrun (2005) and Per (2007). Research about strip roads and wind damage is very limited. It is commonly known that the trees next to the strip roads more often fall whit heavy winds, and the purpose of this thesis was to verify this statement. Data was collected from first- and second thinnings at Boxholms Skogar AB, Östergötland. In first thinnings data was collected from both spruce and pine stands and second thinnings only data from spruce stands was collected.

This paper describes a study examining four different GARCH models AR(1)-GARCH(1,1), AR(1)-EGARCH(1,1), AR(1)-APGARCH(1,1) and AR(1)-GJR-GARCH(1,1), and their ability to predict future volatility and thereby providing more reliable estimates for Value-at-Risk. The study is based on daily observations for the return of the OMX Stockholm 30 Index, during the time period 31st December 1996 to 29th December 2006. The coefficients for these GARCH models have been estimated using a five-year rolling estimation window, with one-year lags, for five different in-sample-periods. These five in-sample-periods, and the coefficients given by them, have been used to generate five out-of-sample predictions for the volatility in each year. Using these volatility predictions, the daily Value-at-Risk has been calculated for confidence intervals of 90 percent, 95 percent, and 99 percent, respectively, during the time period between 1st January 2001 and 29th December 2006.

The Iron Age cemetery at Tuna in Badelunda parish, Västmanland, is a complex and unique burial ground used for only 69 graves during a period of roughly 700 years, between 300 - 1050 AC. The individuals buried at Tuna show an impressive variety of gravegods as well as stonesettings formed above the grave. Who where these people that were cremated at Tuna, among the mysterious women in the boats and the rich women in grave X? As we study the graves of the cremated individuals we reach a new understanding of the cemetery; from its social structure down to every individual. Through the analysis of the stonesettings, gravegods and bones we see a how these subjects, when analysed, show a picture of the individuals and social structure of the cemetery.

The purpose with this report is to compare moose browsing in young stands within a small game preservation, and if there are any differences between two areas. The method used in the inventory is a local damage caused by moose browsing survey. It is suitable on areas that have more than 50 hectares but less than 250 hectares of young forest. Inventory of moose browsing is best done on bare ground in the spring and should preferably be done before the flushing begins at the pine. Orsblecks game management area is divided into two different moose management areas, Noppikoski and Siljansringen. During the winter Siljansringen has a denser winter strain of moose, because of the moose seek out lower parts with less snow during the winter. This should also lead to the southernmost part should accommodate larger proportion of damages caused by browsing by moose.

Calculations of net present value are based on a discount rate, which requires knowledge about the company?s cost of debt. A common way to do this is by observing the company?s credit rating, when no credit rating is given it?s possible to use a synthetic rating model based on quantitative data to estimate a credit rating. Thus, the aim of this study is to increase the understanding of which quantitative data, in terms of key figures, that can be used to explain the given credit ratings for companies from the Nordic countries.In developing the model, key figures found significant in previous studies are being tested for whether or not they are applicable for companies from the Nordic countries.

Uranium (U) is a naturally occurring component in bedrock and under the "right" conditions it can dissolve and move into the ground water. Since many people in Sweden depend on drilled wells as their main drinking water supply, they may be exposed to the uranium in the water. Radioactive radiation is not the major concern associated with naturally occurring uranium. It is rather the chemical properties of uranium that make it a potential danger to human health. Uranium is proven to have toxic effects with respect to the functioning of the kidneys.