Regulations on the exhaust emissions of HD-diesel engines are becoming more and more stringent, and therefore, emission after-treatment systems are commonly used. These systems rely on catalytic conversion of NOx,CO , and HC emissions, and are thus dependant on temperature. At low load of the engine, exhaust temperatures are not sufficient for the after-treatment components. Therefore, means to increase the exhaust temperature while maintaining low emissions and fuel consumption are needed.The focus of this project has been to develop strategies for the lift profiles of exhaust and intake valves in the engine, with the goal to raise exhaust temperature in combination with low emissions and fuel consumption. The strategies have been tested in a single-cylinder research engine equipped with a hydraulic variable valve actuation system.

Introduction: The concept of CSR was first coined in the 1950?s and refers to corporate vol-untary work to contribute to a sustainable society. In Sweden, companies within the finance sector are among the worst when it comes to implementing CSR in their daily work. The debate on whether companies should engage in CSR activities or not, is extremely relevant nowadays. Right now we are facing a time where the demand on companies to take their social responsi-bility becomes more intensified.

Syftet med denna undersökning är att undersökaPedagogernas syn på barns motoriska utveckling med inriktning till naturmiljö samt om pedagogerna är medvetna om forskningen kring barns motoriska utveckling med inriktning på naturmiljön. Studien bygger på kvalitativa intervjuer. Intervjuerna gjordes på fem olika förskolor med sex olika pedagoger, både förskollärare och barnskötare. Förskolorna var placerade i en mellan stor kommun i Sverige. De intervjuade jobbade på 1-3 års avdelning, då detta var vald åldersgrupp för undersökningen. Av resultatet framgår att pedagogerna är ute i naturen olika mycket och detta beror på olika faktorer. Det är dock medvetna om fördelarna som naturen har med sig för den motoriska utvecklingen och kan inte se några nackdelar med naturen för den motoriska utvecklingen.Pedagogerna är till viss del medvetna om forskningen kring ämnet, men de anser att medvetenheten är olika från pedagog till pedagog. Slutsatsen av studien är att pedagogerna är medvetna om de fördelar som naturen har med sig för den motoriska utvecklingen och samtliga vill vara ute mer i naturen.

The aim of this thesis is to study the conditions three public libraries have to be a resource for university students. The libraries are all situated at a distance from universities that allow the students to commute between the university and their homes. These students often make the same demands on the public library as they do on the university library. In order to conduct this study the frame factor theory has been used. This theory was developed by pedagogic scholars during the 1960s and focuses on how the framework surrounding the school affects the learning results.

Detta examensarbete behandlar kommutering av en BLDC-motor, borstlös likspänningsmotor, med hjälp av FPGA, Field Programmable Gate Array. Det jämför och diskuterar också skillnader mellan de intelligenta aktuatorer som används av branchen idag med dumma aktuatorsystem och syftar till att bygga kunskap kring ämnet. Allt högre krav ställs på kommunikationen i ett fordon vad gäller hastighet och datamängd och av denna anledning är det av stort intresse att utreda om ett teknikbyte av ett driftkritiskt system som en BLDC-aktuator är möjligt och lämpligt.Som en fortsättning på tidigare examensarbeten som behandlat reglering av en borstlös likspänningsmotor med hjälp av en dum aktuator löser detta examensarbete ett problem rörande färdigskriven kommuteringskod som uppdagades. Att använda en FPGA för att ta fram kommuteringssignaler till drivsteget ger en försumbar fördröjning av de pulsbreddsmodulerade signalerna som reglerar motorn och därmed uppnås en fungerande dum aktuator som uppfyller Scanias krav för kommutering av BLDC-motorn.Dumma aktuatorer är på många sätt ett bättre alternativ än dagens intelligenta aktuatorer. Fördelar och nackdelar med tre olika system inom områdena uptime, produktionsvolymer, prisnivå och kostnader, reglerprestanda, IO-krav och eektkrav jämförs och diskuteras och på de ?flesta punkter pekar resultaten på att ett teknikbyte till dumma aktuatorer skulle ge vinster på era plan..

During the years 1950-75 was the construction of building apartments in high speed. A rapidly growing reconstruction requirement is the consequence of the rapid construction speed in these years. The technical lifetime of the different parts of the buildings is about to end and the needs for reconstruction is huge. One of Sweden's national environmental objectives is to reduce the urge of energy in buildings. This calls for radical measures to implement energy efficiency of existing assistance particularly in the assistance that is now facing reconstruction.

By conducting interviews, studies as well as scanning the current scientific landscape, this paper examines the opportunities of increasing current capacity within the public transportation system in Stockholm with simple financial means for the benefit of the travelers. The paper focuses on the central station of the subway system and how adjustments of processes carried out in relation to the turnstiles could increase performance within areas of interest, given the preferences of the travelers. The theoretical framework of the paper includes models from the field of capacity management as well as theories related to the pedestrian behavior. Applying these theories and models to the collected data, the paper derives some main conclusions. First of, people using the public transportations system, and especially the subway, consider speed and dependability as the most important performance objectives for the caretakers of the public transportation system, SL and MTR to master.

Modern semiconductor design methods makes it possible to design increasingly complex system-on-a-chips (SOCs). Testing such SOCs becomes highly expensive due to the rapidly increasing test data volumes with longer test times as a result. Several approaches exist to compress the test stimuli and where hardware is added for decompression. This master?s thesis presents a test data compression method based on a modified facsimile code.

Stora Enso Skog has a long term contract regarding felling rights and silvicultural activities on forest owned by Bergvik Skog. In the autumn 2006, Bergvik Skog proposed a new thinning program, ?Bergvikgallring?. The new program implied an increased focus on extraction of smaller trees compared to the present thinning program, Stora Enso Skog?s ?Kvalitetsgallring?.

The simple view of reading is a theory in which reading is divided into decoding and linguistic comprehension. The theory has been used to explain and to subgroup reading disabilities. Research has also investigated if additional factors are of relevance to reading. In the present study, decoding was divided into the factors orthographic decoding and phonological decoding, while comprehension was divided into word comprehension and grammatical comprehension. The purpose was to analyze these factors and their contribution to reading ability in children in fourth grade: one group with reading difficulties (n=36) and one group with typical reading ability (n=36).

In today's agriculture efficiency and the capacity of tools and machinery are crucial. In this work we investigate whether it is possible to enhance the capacity of sowing by increasing the work speed of seeders, how seed technology affects seed placement, and if there is any difference between two different brands of seeders and their sow techniques. The seeders we have chosen to compare are Väderstad Rapid drill and Amazon Cirrus drill. The tillage capacity of the seeders and their traction power needs were examined as well.Väderstad Rapid and Amazon Cirrus were tested in a randomized block design with four replicates at three different speeds, 8 km/h, 12 km/h and 15 km/h. The seed placement at the different speeds was examined by dividing the seedbed into four different zones from its surface to its bottom.

This thesis aims to investigate the voting premium for companies differentiating voting rights between share classes on the Stockholm Stock Exchange. The voting premium represents the value of a vote attached to the share. The voting premium can be estimated from the price premium between two listed share classes with differentiated voting rights. Rydqvist's dissertation (1987) serves as a model for this study which investigates whether the theory of the so called "oceanic games", along with a proxy variable for cost of control, can predict the voting premium during 2010-2012. To the original model developed by Rydqvist, control variables for differences in liquidity between share classes are added to investigate for an increase in the explanatory power.

In this study, the effects of using fine milled cassava stems as an additive in biofuel pellet production was compared to the effects of refined starch addition. The bulk biomass fuel raw material, to which the additive was added, was a blend of spruce and pine sawdust. An experimental design in the factors cassava/starch content, moisture content and material temperature was used. Measured responses were pellet bulk density, pellet durability, amount of fines, pelletizer motor current, pellet temperature, die temperature and CV for pelletizer motor current (a measure of process stability). Each response was modeled by multiple linear regression (MLR).

The metal mining history goes thousands of years back. The downside of the mining industry is the large amount of tailings created during the mining operations. Drainage and leaching of heavy metals from these tailings may cause major environmental problems including acid mine drainage and leaching of heavy metals. This study examines a pond located near an old mining site, where part of the old mining facility has been recently (1990) restored. The objective was to assess eventual metal contamination from historical mining and the recently performed restoration using a sediment core as a natural archive of historical metal inputs to the pond.

The global financial crisis hit hard on banking operations worldwide and the sector fell under considerable scrutiny, with particular criticism directed against the banks' own trading practices. A bank owned by the Swedish financial corporation HQ seemed to go without serious financial damage duringthe crisis.In 2008 Finansinspektionen began a review of HQ's activities and a number of shortcomings were identified. Among other things, HQ's risk management was questioned by Finansinspektionen and further how this potentially affected the valuation of complex financial products.In our paper we have chosen to highlight both national and international laws and guidelines that HQ used for their operations and study if HQ followed those laws and guidelines. We also want topresent the theoretical model used by HQ for the valuation of its European options and how HQ calculated their capital requirements ratio. Our purpose is to show how the valuation affected the capitalrequirement ratio and whether HQ followed the necessary laws and guidelines for the valuation of complex financial products.We have chosen to carry out a case study from a deductive approach.