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.

The mining industry, in terms of ore excavation and metal production, is and has been important to the Swedish economy. In connection with the ore excavation process, large amounts of partly sulphidic waste are produced. When the metal sulphides are exposed to air and water they are eventually oxidised, which leads to the formation of acidic water with high concentrations of metal cations and sulphate ions, so called Acid Mine Drainage (AMD). This water may reach the nearest surroundings and cause negative environmental effects. By covering the waste with soil or water, the oxidation process can be minimised. At the Rävlidmyran mine in the county of Västerbotten open pit mining took place between 1951 and 1991.

Summary Today energy prices are rising. As a result biomass fuel is getting more and more interesting. Wood chips is very popular, but also straw from grain production is on the table. Lunds Energi AB project a combined power and heating plant in Örtofta out of Lund. Wood chips is meant to be the main energy source, complemented by straw. In this thesis the transportation of straw for fuel is studied.

During the 1970?s the interest for quality management and the concept of quality costs increased considerably. Business leaders noticed that there was a great potential for reducing costs of poor quality. Since up to 10-30% of a company?s total turnover may consist of poor quality costs some consider them as an unexploited goldmine.

The demand of nature tourism is increasing and new ways to satisfy tourists are necessary.The goal with this report was to answer that demand by exploring the possibilities for backcountry skiing north of Torneträsk. This area was chosen because it is unexplored. This hasbeen succeeded by an extensive fieldwork. Aspects like topography, routes, slope angles andgeological places of interests where recorded. The results has shown that back country skiingis well suited for this area and poses no negative impact on the natural habitat.

Kandidatuppsats, Civilekonomprogrammet, Managementfördjupningen, Ekonomihögskolan vid Linnéuniversitetet, Växjö, 2FE01E, VT2011Författare: Tobias Andersson, Victor Larsson & David HäggbergHandledare: Viktorija KalonaityteTitel: Den Mänskliga Sidan av Kvalitet ? Kommunikation, Deltagande & InnovationUndertitel: En TQM -inriktad fallstudie om Volvo LastvagnarBakgrund: Totalt Quality Management (TQM) är ett program som syftar till att förbättra företagets konkurrenskraftighet med hjälp av ett fokus på kvalitet och en ständig förbättring av processer och arbetssätt. TQM består av en uppsamling värderingar som bl.a. betonar kundfokus, total involvering och ständig förbättring. TQM har dock stora likheter med en filosofi och kan snarare betraktas som ett synsätt vilket skapar svårigheter att skapa en gemensam förståelse och kommunicera den här förståelsen vidare genom företagets hierarkiska nivåer.Syfte: Vårt syfte är att undersöka hur kommunikationen inom produktionens hierarkiska nivåer hanteras för att förmedla värderingar, antaganden och tillvägagångssätt samt på så sätt skapa en förståelse för hur ett kontinuerligt arbete med kvalitetsförbättring fungerar.

This report is the result of a thesis conducted at the consulting firm Bjerking AB andis the final part of the Bachelor Programme in Construction Engineering at Universityof Uppsala. The work aims to investigate the costs and how the choice of ventilationsystem affects building projects during a long-term period. This report covers costssuch as investment, maintenance and energy but also how they affect residents andbuilders. Building regulations for energy consumption are expected to be tougher;therefore a comparison of two different heat recovery ventilation systems(HRV-system) was made. One system is based on a centrally placed unit that coversthe whole buildings ventilation through vertical shafts.

Couch grass (Elymus repens (L.) Gould) is a severe weed in Sweden, and since both the use of herbicides and cultivation should be decreased, it will become increasingly problematic to control couch. The present work is meant to, by literature studies and an experiment, give some answers to the question if cutting and competition can depress the growth of couch. The experiment was carried out in the growing season 2001 at Ultuna, Uppsala, in plastic boxes. The design was three-factorial randomised complete blocks. The factors were plant combination, nitrogen level and cutting strategy.

Bristen på högvärdigt gödsel är i många låg- och medelinkomstländer betydande då mineralgödsel är kostsamt och svårt att transportera. Material att tillverka biogödsel av finns det dock gott om i form av mat- och trädgårdsavfall samt animaliskt och mänskligt avfall. Dessa material är rika på essentiella växtnäringsämnen som kväve och fosfor. Utmaningen vid användning av dessa material är att de ofta innehåller höga halter av smittförande mikroorganismer vilka är skadliga för både människor och djur. Ska dessa material användas som biogödsel är det viktigt att de patogena mikroorganismerna inaktiverats så att smittor inte sprids i miljön och till livsmedel.Denna studie jämförde tre maskkomposter med tre mesofila komposter med avseende på inaktivering av mikroorganismer samt produktion av ett högvärdigt biogödsel som slutprodukt.

District heating covers around 80 % of the heating demand in apartment buildings and 10 % in single-family homes in Sweden. In the year 2010 the total input of energy to the Swedish district heating grids was about 70 TWh, which corresponds to 11 % of the total energy input to the whole energy system in the country. Through the combined production of heat and power the CHP-plants often reaches an efficiency of 90 % from energy in the fuel to produced heat and power. In order to keep the efficiency high it is important for the owners of the plant to have good knowledge about the plants performance at different operation points. Strängnäs Energi AB initiated this diploma work together with FVB Sverige ab in order to come up with a program for short term planning of the production of heat and power at the company´s CHP-plant.The work consists of three main parts.

Bakgrund: Bonussystem är något som började växa fram under 1980-talet och är ett inte sällan förekommande debattämne. Inte minst i dagens situation med en stark recession och en finansiell kris om knuten. Flertalet artiklar har tagit upp ämnet, där man har ifrågasatt olika företags utdelning utav enorma rörliga ersättningar trots den svåra tid vi nu befinner oss i. Företagen motiverar olika andledningar till varför de väljer att betala ut bonusar till sina vd:ar, som grundar sig på olika typer av variabler.Syfte: Uppsatsens syfte är att undersöka vilken typ av variabler som visar starkast korrelation med storleken på företagsledarnas bonusar, och att se om dessa kan tänkas påverka deras risktagande.Metod: Uppsatsen bygger på en kvantitativ undersökning av sekundärdata som har inhämtats från de utvalda företagens årsredovisningar. Undersökningen tar en deduktiv ansats, där de valda teorierna appliceras på de resultat som undersökningen visar.Resultat: De fem företagen som betalar ut högst total ersättning är ABB, Ericsson, AstraZeneca, Getinge och Scania.

A comparative thesis to study precious metals impact on a portfolio, during a long period of time, from the fourth quarter of 1986 to the third quarter of 2012. Five different portfolios are compared; three of the portfolios containing one of the following precious metals, gold, silver and platinum, the fourth portfolio contain all precious metals and shares, and the fifth portfolio containing only shares which is represented of OMXS30. This is done to determine the portfolio that generates the most return in relation to the least risk with the help of historical prices. Sharpe ratio is used to measure the profitability of precious metals by measuring the yield relative to the total risk. The study also measures precious metals correlation with shares..

Weaning is a standard procedure at most studs, and the methods of weaning varies greatly. The method used at the stud in this particular study is supposed to decrease stress. The purpose of the study was to compare the behaviour of foals in group before and after stepwise removal of their mares. Standardbred foals with their mothers were kept in three different groups at pasture (12, 11 and 11 foals, respectively, mixed sexes). They had free access to silage and the foals were fed concentrate in a creep-feeding area. By the time the foals were 5 months old, the mares were stepwise removed from the pasture.

The main purpose of this study is to, in the educator?s point of view, try to find out how pre-schools approach science and technology along with Information and Communication Technology (ICT). The survey was conducted based on qualitative interviews where two preschools participated, a total of seven teachers were interviewed. One of the preschools only has access to a computer, and the other preschool is able to use both computer and tablets in their preschool activities. The results of this show that the teacher?s thoughts about ICT are positive and that they consider it as an important part of their work and have many areas where it is useful.

BakgrundBankers kreditgivning till företag föregås av en noggrann granskning och kontroll av företagets status. För att sänka riskerna till en acceptabel nivå används olika bedömningsverktyg. Kreditbedömingen skiljer sig dock mellan olika banker. Vissa tar in mer information och gör en grundligare riskanalys, medan andra går mer på magkänsla. Kassaflödesanalysen är ett verktyg som vissa kreditgivare använder sig av.