The main purpose of this master thesis is to examine how high school students think when they independently are evaluating information for a school assignment. We examine what types of sources they use, and what their reasons are. Besides that we also examine what sorts of criteria they use when evaluating if a source is usable, and if there are any other factors that can have an influence for their choice of material. We have done a qualitative study with 23 students, where the students wrote down their answers in a questionnaire containing wide open questions. We have created our own tool for analysing the material by extracting the most general things in our chapter of earlier research, concerning the three questions which our study is based on.

Topping is a precommercial thinning (PCT) method where secondary stems are cut higher above the ground compared to conventional PCT. The secondary stems continue to live for a period and are supposed to compete with the main stems and promote their quality.The objective of the study was to compare the effect of PCT on height and diameter growth between topping and conventional PCT. The study also analysed the relationship between height and diameter growth and the number of stems after PCT.Nine topped stands and six conventional precommercially thinned stands were visited between February 28th and March 5. One sample plot per hectare was laid out in the investigated stands. In every sample plot the number of stems was counted and five main stems were measured for height, height growth since PCT, diameter and diameter growth since PCT.The results showed significantly higher effect on height growth after topping as compared to conventional PCT but no significant difference in the effect of diameter growth between topping and conventional PCT.

The aim of this thesis was to investigate if the robotized welding method FSW (Friction Stir Welding) could be applied for joining a rotating structure in an aero engine at Volvo Aero Corporation. FSW is expected to introduce less defects than today?s welding methods and could therefore be suitable for critical aero components. The material is the nickel based alloy Inconel 718, however a material experimentation is outside the scope of this report.The main goal of this study is to verify if the ESAB ROSIO robot based FSW-system has a suitable work space to be able to weld the rotating structure, and if the welding tool has accessibility to the joints. The FSW-process needs a rigid fixture, and a number of fix-ture concepts are presented based on a proposed weld sequence.

The main purpose of this study is to investigate the productivity effects of multiple tree handling in thinnings. Other important elements have been to investigate in which extent multi-tree handling is used in stands with different stem volumes and the impact of collecting partially delimbed fuelwood assortments has on harvesting performance. The study is based on data from thinnings in Sydved and contractors' operating activities. Collection and compilation of operating schedules, number of stems and surveyed volumes from several contractors and a large number of executed orders underlying the results. Multiple tree handling is used to a much greater extent at lower average stem volumes. Prediction models for productivity of the multiple-tree handling harvesters in the study differ from the productivity models for single-tree handling. In the model developed in this study productivity is not as dependent of stem volume as reference models.

Today?s forest managers implement a large number of methods to increase the amount of dead wood in Swedish forests. They use everything from high cutting of trees to girdling trees and burning forests. However, implementation of these measures without proper knowledge of their consequences is a common problem. This study has been performed to increase knowledge about two of these measures, girdling and high cutting, and how these actions affect the number of wood-living insects living on dead trees.

THE THIN RED LINE ? Identity in theory and method With this essay I want to explore some possibilities with the term identity within archaeology. Identity is a term best understood in the light of different scientific approaches. For instance the anthropological and historical angel combined with the quality of archaeology, as is the case in this essay. By combining these approaches, I create a (clarification) method of exploring traces of identity.By analysing two different graves from Scania, having a negligible number of artefacts from the Viking Age, and three graves from Bornholm, known for its large number of finds from this period, I test the ability of my method.

The aim of this master thesis is to show how the dissemination of scientific information took place and developed during the 19th century. The main focus is Lund University. Therefore I have formulated two questions: How did the five heads of the history department at Lund University publish their research findings in the 19th century? What factors in society influenced the scientific spreading of results in the 19th century? To assess the scientific reliability of the sources I have used a method based on source criticism and hermeneutics. The thesis covers important concepts such as the exchange of publications between the universities, commercium litterarium and Akademischer Tauschverein and also the development of Lund University yearbook.

Over the past 40 years 600 000 ha of lodgepole pine (Pinus contorta ssp. latifolia (Engelm.) Critchf.) has been planted in Sweden (280 000 ha on SCA's forest land alone which represents about 15% of the company's total forest land area). In the early 70's SCA situated a number of experimental stands in order to investigate different aspects of the exotic tree, primarily growth rate. To be able to compare the two species plots with scots pine (Pinus sylvestris L.), this species was also planted at the same time and under the same conditions. A number of questions should always be raised when exotic species are introduced in an ecosystem. Invasiveness, the pathogen situation and purely ethical issues should be discussed.

Concrete floors have traditionally had no problems with annoying vibrations. However with the demand for larger spans the floors need to be made more slender with a higher degree of utilization and lower mass. Therefore new floors may have problems with vibration serviceability. This thesis studies the vibration characteristics of hollow core slabs. The analysis was made in the finite element program Ansys. The hollow core slab was subjected to a varying force simulating one person walking across the slab.

Textbooks are a very influential medium considering the fact that they often introduce students to information they have never read or heard about before, and as such they become very important in forming students? opinions on different matters. In this study I have taken a closer look at five textbooks in history that are currently being used in the Swedish upper secondary school. My aim has been to find out how East Asia is pictured and also how much space East Asian history is given in these textbooks with the postcolonial theory as theoretical basis. My study shows that East Asia is given very little space compared to Europe in these books, with an average of less than a twentieth of the number of pages that deal with European history.

Retrospective data from two stud farms, in this study named stud farm A and B, including 742 mares, was statistically analysed. Parameters included in the analysis were type of insemination, date of the first insemination, number of inseminations, the age of the mares, if the mares had a foal or not, foaling date, result of pregnancy examination (if it was done), twin pregnancy and treatments given to the mares. The pregnancy results and the treatments where compiled into a number of frequency tables in which the mares where arranged according to age, month of first insemination, foal or not and type of insemination. There was a significant difference in pregnancy result between the years at both stud farms (2001 better than 2002). At stud farm A, in year 2001, month (at start of insemination) significantly influenced the pregnancy result.

The main topic of this thesis is to evaluate the impact on the usability of web pages when using responsive web design, a concept for developing web pages whose design adapts to the screen size being used. This is done by creating a responsive prototype based on an existing web site. A number of usability tests are conducted on the two versions of the site in order to compare the time to complete the tests and to observe the behaviour of the test participants. The tests are conducted on desktop as well as on mobile devices with varying screen size.The number of test participants was relatively low, and so the quantitative result is not statistically valid. However, the conclusion is that the most effective combination is to use either of the sites on desktop format.

In May 1675, the local court in the northern Swedish parish of Nordingrå, which had approximately 1,000 inhabitants, held a preliminary investigation on 113 persons accused of witch-craft and superstition. For the majority of the 113, the main accusation was to have travelled to Blåkulla, a place where witches according to Swedish folklore participated in satanic festivities and rites led by the Devil himself. The preliminary investigation was held at the request of The Royal Witch-craft Commission. Nordingrå belonged to the province of Ångermanland, one of the Swedish provinces with the highest number of witch trials in the 1670s. The trials in Nordingrå have, more or less never been examined before, mainly due to the fact that no sentences or penalties were ever imposed.The purpose of this paper is to examine social relations and social conflicts in Nordingrå with the records from the witch trial 1675 as the primary source.

The aim of this paper is to spread some light over contract treatment from the perspective of the District Courts, Social Services and Probation Services, and understand the reason for local variation of the number of people sentenced to contractual treatment.Essential questions asked in this paper are; What advantages and disadvantages are known by the cooperating parties regarding contract treatment in comparison to prison? What parameters are considered when the cooperating parties decide upon contract treatment? What impact does the shared responsibility of cost have? What do the respondents think is the reason for the local variation?In order to answer the essential questions a qualitative and descriptive method has been used to highlight the main question of our study; What is the reason for the local variation in number of contract treatment sentences in Halmstad and Ystads district courts?The paper shows that the local variation between the Probation Services districts is dependent on the conditions to propose a contract treatment. In Halmstad it is not conditioned for the Probation Services to have a responsibility agreement with the Social Services to the same extent as for the Probation Services in Ystad..

Sweden is dependent on secure sea transport. Shorter disruption of imports of fuel and crude oil can be managed with an emergency stock, but a prolonged halt in imports creates problems. For industry, the vulnerability is greater. Fragmented production chains in combination with expenditure reductions in inventory causes a dependency on proper transport of intermediate goods in the manufacturing industry. A lengthy disruption thus involves disruption of production for both domestic consumption and for export goods containing imported parts.In order to secure shipping routes with a limited number of vessels, Mine Counter Measures (MCM) capacity is required, and according to the Armed Forces, developed with new sensors and autonomous vehicles.