The building industry consumes approximately 40 % of the total energy consumption in Sweden, where the using stage is dominating with 80 %. There is a lot of work in progress to reduce energy use in the building industry, and the demands from authorities regarding energy use increases. As a part of this work Building and planning department of Sweden has established a requirement that has been applied since 2006, and restricts a maximum energy use for buildings.The requirement includes that an energy simulation must be done in advance to demonstrate that it is possible to meet the demands.Reality is however more complex than an energy simulation program, that frequently underestimates the energy use of buildings. The purpose of this thesisis to study and analyse deviations between estimated and actual energy use in modern apartment buildings. The study includes four apartment buildings in Stockholm, Gothenburg and Jönköping that were built in 2007-2009.

Databases are an easy way of storing information kept together and accessible and can save time by finding the information easier. Cochleaimplant could be seen as a form of advanced hearing aid, this product consists of two parts, an external part that recieves sound and sends signals to the internal part through electromagnetism. The internal part is the implant itself and is surgically placed in to the cochlea. Örebro University hospital has just started working within the field of Cochleaimplants and are therefore in need of a database to store patient related information.The database problem was solved using Microsoft Access 2003 combined with the built-in support for Visual Basic, which is a sort of programming language. The result of the thesis work was a fully functioning database according to the given specification and is now being used at Örebro University hospital..

In this report a new gear concept is evaluated using the magnetic finite element method (FEM)software MagNet and Ansys as well as the mechanical FEM software Abaqus. The gear conceptis evaluated in terms of maximum torque capability, torsional stiffness, gear ratio and efficiency.ABB Corporate Research has proposed a new gear concept which should be less expensive thangearboxes used today. The new concept is called aMagnetic Harmonic Traction Drive and usesthe principles of a harmonic drive gear to achieve a high reduction ratio. The gear conceptreplaces the wave generator used in traditional harmonic drives with magnets and uses tractioninstead of gear teeth to transfer the torque. The main components in the gearbox are the magnets,the flexspline, the magnetic portion and the circular spline.

This master thesis deals with problems in the arc length control in Pulsed MIG/MAG Welding. The main problem is that it is not possible to measure the arc length. In the present solution the voltage over both the electrode and the arc represents the arc length. To improve the arc length control a model of the electrode melting has been built. One output from the model is the voltage over the electrode and with this voltage together with the measured voltage it is possible to calculate the voltage over just the arc.

In order to study how science and archeology was exploited for political means during the Third Reich this thesis investigates the scientific institute Ahnenerbe, founded in 1935. The thesis is built up as a literature study combining literature sources from the time of the eventas well as research done around Ahnenerbe after the war.The purpose of the thesis is to examine the official and unofficial purposes of the organisation. It investigates how scholars viewed Ahnenerbe at the time, and after the war. It further examines the scientific value of the material published by the organisation, where there is a specific focus on the material covering Germanic Männerbunds..

This thesis conducts a comparative study between two academiclibraries, one Swedish and one English, in order to analyse ifdifferent funding systems influence the marketing of theirservices. The theoretic foundation is built on relationshipmarketing, which emphasises the importance of creating andmaintaining relationships. A qualitative approach has been usedthrough the use of case studies, with semi-structured interviewsbeing held with library staff and managers in both countries. Inaddition to these interviews strategic plans have also beenanalysed. The result from the study shows that whilst there aresome differences between the two university libraries there arealso similarities, which indicates that it is not clear if differentfunding systems have an impact on the marketing of the services..

This study is an examination of the stadium fever prevailing in Sweden. It is built stadiums in Sweden as never before. The high cost of these constructions end up in the end at the Swedish taxpayers. The study examines through the hedonic pricing of real estate how local residents value the new stadiums. The result indicates that local residents put a positive value in the costly and sumptuous buildings.

A common problem in forestry is plant death caused by frost. The risk of frost is highest on wind protected, flat or low-lying areas in the terrain. Here you often have regeneration problems with Norwegian spruce which is especially sensitive to spring frost. Swedish tree experiments have shown that the black spruce can be a suitable alternative on these areas, for example on moisture frost prone areas. The species originates from North America and its pioneer tree characteristics make it more frost hardy than Norwegian spruce.

I have in my thesis, examined the possibilities in terms of energy for a condominium association.To have an effective and good energy is becoming increasingly important with today's rising electric and oil prices. In my thesis I have used the condominium association Kärralyckan, which is situated in Falkenberg. The buildings at Kärralyckan are built in the mid-1970s, and are heated by electric radiators. The tap water is heated by an electric boiler.Based on that calculation I can show the various energyststem. The different solutions have been developed by contact manufacturers and installers through phone calls and e-mail.According to the results shows that geothermal heating has been a great solution for Kärralyckan.

The Swedish Transport Administration manage nearly 4,000 railway bridges in different condition and age around the country. These bridges is in constant need of maintenance and requires continuous inspections. This thesis is designed as a damage investigation on a single-track railway bridge south of Solvarbo in Säter municipality. The railway bridge is in operation and serves over 10,000 trains a year, everything from speed trains to freight trains. The bridge is built as a beam bridge, simply supported over a road.

A bioslurry reactor was built for the bioremediation of TNT contaminated waste from the demilitarization industry. The field test was conducted at Vingåkersverken in Vingåker, Sweden, to see if results from laboratory studies could be repeated in a full scale reactor. The goal of the project was to optimize the reactor to such a degree that it could be used to handle the waste produced at Vingåkersverken and also that this technique could be applied for remediation of contaminated soils. Unfortunately the samples taken during the full scale field test were destroyed by the shipping company and no analysis was possible. A later attempt by the Biorex research group has also been unsuccessful to reduce the amount of TNT using the bioreactor.

In today's society it is important to easily and smoothly get accurate information. Withthe help of the application VasaSvahn it is possible to get expert help for Crosscountry ski waxing. The application VasaSvahn has been ported from an existingversion for iOS to a new version for Android. The application uses a third-party Webservices to obtain necessary information and support distribution of information. Theapplication is also connected to a database.

In Sweden, the demand for bio energy has increased in recent years due to the current energy and climate debate. In 2008, the energy supply of Sweden was 612 TWh, biofuels accounted for 123 TWh of these. Stumps have been highlighted as a potential fuel in recent years and the Swedish Forest Agency expects a technically and biologically feasible potential of 20.7 TWh annually between 2010 and 2019. The idea of utilize stumps is not new. During the 19th century stumps were used for tar production and during the 70?s and 80?s attempts were made to use stumps in the pulp industry.

Understensho?jden is Stockholm's largest eco-village which was built in the early 1990s with the vision of enabling ecological living for people. However the ecovillage is no longer considered as environmentally friendly because of its relatively high energy consumption, and non-updated energy system. The purpose of this study is therefore to investigate how Understensho?jden should reduce their energy consumption and upgrade its energy system by using Blower-Door, IR-camera and Design Builder.

Calcareous fens constitute a specific habitat which is uncommon in Europe and protected by the EU habitat directive due to its importance to several threatened species. Hagebyhöga in Östergötland is a calcareous fen habitat included in the Natura 2000 Networking Programme. Adjacent to the existing fen, a degraded fen area is situated. The area has been used for agriculture for several years but is now going to be restored to its former state by the county administrative board of Östergötland.When working with restoration of degraded fen areas it is important to aquire knowledge about the chemical soil conditions. Plant growth limited by phosphorus and low fertility are characteristic conditions for calcareous fens, whilst arable land usually is highly fertile and limited by nitrogen.The purpose of this study is to bring forth useful knowledge for restoring the degraded calcareous fen of Hagebyhöga.