The most predominant method for forest harvesting in Sweden is the cut-to-length method based on two-machines, a harvester that fells trees and cut them in a predefined length, and a forwarder which transports logs to a landing area for further transport to a processing facility. New machine solutions have to be much gentler to the ground than today?s machines. To be able to develop a forestry machine that preserves the terrain requires a proper understanding of the interaction between tire and soil.The goal of the project is to contribute to the existing knowledge of forest machine tire-soil interaction and to develop a tire-soil model that enables dynamic simulations of forest machines operating in rough terrain. The modeling has especially been focused on the interaction between tires and soft ground.A comparison of theoretical data of different WES-based terrain interaction models and a comparison test data from a full scale field test is presented.

The world?s growing need for energy together with a desire to ward off the worst consequences of global climate change has resulted in a never seen desire to invest resources in renewable energy sources. Biogas production through anaerobic digestion is one of those growing energy sources. In Sweden there are over two hundred plants that uses this biological process to break down organic substances while producing carbon dioxide and the energy-rich gas methane.This master?s thesis has focused on development of the mixture of different organic substances that is treated at a specific plant, namely Mosserud biogas plant.

The taste of the dairy product is probably the main factor determining consumer?s dairy products choice. Consequently it is of great importance that the product tastes good and as expected every time. Off-flavors in milk can be caused by for example oxidation of the milk fat. Since copper is a prooxidant, a high copper content in the milk can cause oxidation.

The purpose of this study is to analyze how the parties (USA, Great Britain, UN and the European Union) legitimize their intervention in Bosnia-Herzegovina as seen from without the conceptions of sovereignty and intervention. USA and the UN have legitimized their intervention on security reasons. The American president, George W. Bush, claimed that democracies never engage in war with each other and that democracies were prosperous just because they were democracies. According to the president, that is why it is important to democratise the whole Balkan region to protect the international community from terrorism which grows in unstable and undemocratic states.

Bakgrund: Främre korsbandsskador (ACL-skador) är allvarliga och vanligt förkommande inom idrott, speciellt hos ungdomar i åldrarna 14-19 år. En förhöjd risk för ACL-skador har påvisats för individer aktiva inom fotboll och handboll, vilka är mycket populära sporter världen över. Inom dessa sporter har även kvinnor påvisats ha två till åtta gånger högre risk att drabbas än män.Syfte: Syftet var att undersöka om det fanns någon skillnad i knästabilitet vid en hopp-landningsrörelse mellan tjejer och killar i åldrarna 16-19 år, aktiva inom fotboll och handboll samt att undersöka om det fanns någon skillnad mellan fotbollsspelarna och handbollsspelarna, oavsett kön.Metod: Ett drop jump-test utfördes av 20 ungdomar, aktiva inom fotboll och handboll, medelålder ±SD 17,0 ± 0,9 år. Testerna filmades i frontal- och sagittalplanet och analyserades sedan med hjälp av Landning Error Scoring System (LESS). Post hoc-analyser genomfördes för att kontrollera skillnader i 1) graden av valgusställning i knäleden mellan tjejerna och killarna och 2) graden av knäflexion mellan fotbolls- och handbollsspelarna i landningsmomentet.

AbstractElectricity consumption is a globally increasing problem caused by the high share of electricity produced in coal power plants. These contribute to high carbon emissions when only about 1/3 of the heat generate electricity and the remaining 2/3 of the heat cools off. Combined heat and power plants (CHP) have high efficiency because they use the residual heat for domestic heating. The CHP plant often use fuels from renewable resources, giving them a lower carbon footprint, but are also depending on the heat demand. If electric powered products such as drying cabinets convert to heat powered products more environmentally friendly electricity will be produced by CHP plants, which can supplant electricity, produced from coal power plants and reduce carbon emissions.

A today common soil reinforcement method is the installation of lime-cement columns. Lime-cement columns have been used since the 1970?s and have been a useful method for stabilizing soil at great depths. It is mostly used for stabilizing road and railway embankments because the method is economically viable and the columns are easy to install. The total costs for the installation of the lime-cement columns is dependent on the numbers of installed columns, what percentage of lime and cement that has been used and the pattern in which the columns has been installed.

Background for the research problems: Small companies are very important for the economic stability and development, something which the economic crises in recent years have underlined. Therefore it?s important to minimize administrative costs for smaller companies and also in other ways facilitate their further development. For these reasons accounting has been simplified and auditing abolished for smaller companies in many countries. In Sweden auditing for small companies was abolished nearly three years ago.

The focus of this thesis is the group as a pedagogical tool. It investigates whether and how what is known of group size can help further schools in fulfilling knowledge and democracy goals and moreover how such knowledge can influence the principals? management. The mission of school education is to provide the basis for each pupil?s individual development and in the end it is pupils? individual performances which are graded.

Background for the research problems: Small companies are very important for the economic stability and development, something which the economic crises in recent years have underlined. Therefore it?s important to minimize administrative costs for smaller companies and also in other ways facilitate their further development. For these reasons accounting has been simplified and auditing abolished for smaller companies in many countries. In Sweden auditing for small companies was abolished nearly three years ago.

This paper aims to examine how and to what extent, a transition of Sweden according to the principles of Omställning Sverige (Transition towns Sweden), have the potential to contribute to a society with increased happiness.The paper is based on a qualitative textual analysis of the key texts in the Swedish Transition towns movement, Omställning Sverige. In the first part of the study the most important transition principles of Omställning Sverige were identified. Four key principles emerged: An altered view of economics, a spiritual change, a stronger local community and increased awareness. These transition principles were then analyzed through the lens of the scientific fields position on happiness, followed by a summarizing conclusion.The altered view of economics which Omställning Sverige advocates, where sustainability and quality of life are priorities over economic growth, is even necessary to secure our basic physiological needs. Such an economy has also improved conditions for economic stability, high employment and higher efficiency in the sense of happiness promoted in relationship to how many natural resources are used.

A large part of the interactions between horse and rider during horseback riding takes place through the reins and the bit and devices for measuring the tension on the reins, rein tension meters, has fairly recently been developed. To safeguard the welfare of the ridden horse riders need to be aware of the rein tension they apply and actively work to decrease it. Furthermore, there is a need to develop the study of rein tension through new techniques and refined analysis procedures. A good-quality rein tension meter should be small in size, sensitive, durable and as accurate for light rein tension as for strong forces. Rein tension meters used in research on horse and rider interaction commonly depend on strain gauge technique for generating rein tension data.

This paper aims to examine how and to what extent, a transition of Sweden according to the principles of Omställning Sverige (Transition towns Sweden), have the potential to contribute to a society with increased happiness.The paper is based on a qualitative textual analysis of the key texts in the Swedish Transition towns movement, Omställning Sverige. In the first part of the study the most important transition principles of Omställning Sverige were identified. Four key principles emerged: An altered view of economics, a spiritual change, a stronger local community and increased awareness. These transition principles were then analyzed through the lens of the scientific fields position on happiness, followed by a summarizing conclusion.The altered view of economics which Omställning Sverige advocates, where sustainability and quality of life are priorities over economic growth, is even necessary to secure our basic physiological needs. Such an economy has also improved conditions for economic stability, high employment and higher efficiency in the sense of happiness promoted in relationship to how many natural resources are used.

There has always been global warming on earth and it is because of it that the earth is inhabitable. Without global warming the temperature on earth would be around -18 ° C instead of today's + 15 ° C. Global warming is generated by greenhouse gases like carbon dioxide and methane which trap long wave radiation in the earth's atmosphere. The problem today is that the global concentration of green house gases has significantly increased since the 1750's as a result of human activity. Today's values widely exceed the preindustrial values.

In this study we have explored and investigated how journalist experience the relationship with politicians/press secretaries in the making of political news. The study examines how journalists see the balance of power between them and their political sources in the setting of the news agenda. To do this we have used a qualitative interview analysis. Our theoretical starting points have been based on the social exchange model. The social exchange model has a social psychological and sociological perspective that explains the interaction, social exchange and stability as a process of negotiation exchanges between parties and operators.