This thesis applies to a novel steam expander, one part of a steam engine system, a wobble plateengine. The piston in the expander moves axially with the outgoing rotating shaft and is locatedon a plate, why the engine type is called axial engine. When steam is applied to the plungers theplate wobbles creating a rotation on the shaft going thru the wobble plate. The steam expander issupposed to be used in exhaust gas recovery (bottoming cycle) applications and small scaleenergy production. The commissioner is Ranotor Utveckling AB.

Examensarbetet har gått ut på att genom kvalitativa undersökningar ta reda på hur grafisk form ochinformationsstruktur samverkar för att skapa användarcentrerade webbplatser. Målet var att ta fram en grund för huranvändarcentrerade webbplatser bör byggas. Denna grund är tänkt att fungera som riktlinjer för formgivare som villskapa användarcentrerad webbdesign.Studien visar att det viktigaste för att skapa användarcentrerad webbdesign är att involvera användarna kontinuerligti utvecklingsprocessen. Detta sker genom användartester och intervjuer med representanter för målgruppen. Vi harkommit fram till att graden av användbarhet spelar stor roll för hur målgruppen uppfattar webbplatsen som sådan,men också vilken uppfattning de får om företaget bakom..

The actual project presents the development of a testing rig for a steam engine. A short overviewabout the development of steam engines is presented, until arriving to the development of thepresent engine, which will require to be tested in different ways.The testing rig studied on this project (based on a Lanchester engine) will be used to testdifferent materials and layouts for the group Piston-Cylinder.The engine is a high performance steam power engine, which is going to have a highpower/dimensions ratio, what will lead to require high performance components and materials.An introduction to the testing rig is presented, and the entire design project is done in order toreplace the disappeared documentation of the current testing rig, built on the 1970?s. Also somemodifications done in the original testing rig are presented, as well as some detected problemsand their possible solutions..

My work has resulted in an interactive search engine for plants that can be found at www.plantit.se. In the work process I have searched for which search criteria is most important when doing searches on woodland plants. I have done this by an analysis of existing databases and with an survey where leading plant expertise answered questions about woodland plants. I analyzed three search pages that are on the internet today Havenet.dk, Backyardgardener.com and Den virtuella floran. I concluded that there are several flaws but also many positive aspects that I have used when developing the interface of my page. The survey resulted in the basis for my search criteria the answers listed the most important factors when planting woodland plants. From this information I developed a system with five values on every criteria.

The purpose of this study is to examine the retrieval performance of three search engines, specialized in retrieving news articles: News Index, Excite News Search and Ananova. Thirty questions, grouped into three categories – politics, economy and sports, were used and the first twenty documents for each question were examined. The questions used were designed to be as current as possible and efforts were made to perform the searches with as little time span as possible between each search engine. The precision of the search engines was determined for each of the questions as well as for each category and for the combined categories. In measuring precision an average was calculated, intended to favour search engines that place its relevant documents early in the ranked list.

Environment friendly transports are one of the main topics in the industry and society today.Shell organizes an annual university competition called Shell Eco Marathon. The goal is to buildthe car that consumes the least fuel during a race. KTH participated for the first time in 2006.The engine for this competition, DoubleTwo, has been developed within the school. Theprinciple is a two stroke counter piston HCCI engine with variable compression ratio. HCCIstands for homogenous charge compression ignition.

Idag finns omkring 625 miljoner webbsidor på internet. Rapporten betonar vikten av att synas bland dessa samt hur man gör för att bli sedd, detta samlingsnamn kallas sökmotoroptimering.I den här studien behandlar vi ämnet sökmotoroptimering med inriktning mot Google, vad det är och hur det används i praktiken. Vårt syfte är att fördjupa oss i detta ämne och bilda oss en uppfattning om vad det handlar om. I resultatet har vi utifrån Googles riktlinjer listat flera begrepp som hjälper dig att optimera din webbsida. Vi har även i resultatet intervjuat flera verksamheter eftersom vi vill veta hur sökmotoroptimering används hos dem.I analysen har vi sedan jämfört Googles riktlinjer med teori och resultat för att ta reda på vad som utmärker sig mest.Vi har kommit fram till att en lättillgänglig sida med bra innehåll är det som utmärker sökmotoroptimering och det som gör att webbsidan blir synligare i träfflistan.

This aim of this thesis is to measure the effect of the user interface in real searches on the Internet through a small experiment. Theories on web and search usability and psychological factors concerning usability were first explored. Then three interfaces were constructed, one "good" that followed usability guidelines and had multiple search functions, one "bad" that completely disobeyed those guidelines and had only a simple and small search field, and one "intermediate" interface that was a mix of the two. The search field was set to different sizes, with the shortest in the "bad" interface, a medium field in the "intermediate" interface and several long fields in the "good" interface. All three interfaces were then attached to the same web search engine, Altavista.

The market for heavy duty engines is constantly requiring engines that should be more andmore powerful, while still maintaining low fuel consumption. As a result of increasing enginepower, the engine and coolant temperature increases as well due to insufficient coolingperformance (because of design issues, cost etc.).Also, emission legislations, both current and future, require more and more measures to betaken by engine manufacturers. One way of meeting the legislations is the use of cooled EGR(Exhaust Gas Recirculation), which also lead to increased coolant temperatures.Both these factors also naturally lead to increased engine oil temperatures, the consequencesof which are not thoroughly investigated.This thesis project aims to investigate effects of high temperatures on engine oil degradation,with focus on the greatest degradation process: oxidation. To do this several engine runs havebeen performed on a 310 hp engine with EGR to see what happens to the engine oil in a realengine when exposed to high temperatures. During the tests oil samples have been taken andanalysed for important parameters.As a complement to these engine tests some laboratory oxidation testing have also beenperformed, to be able to compare engine test data with laboratory tests.One goal of the project was to try to formulate an empirical oxidation model, which would beable to predict oil oxidation levels in an engine, given any running parameters.

The combustion engines in today?s vehicles are getting more and more advanced and there are increasing demands on that the engines should operate during optimal conditions. Examples of internal combustion engine parameters which may be carefully controlled are the rate between fuel and air, that this gas mixture is homogenous enough and that it is ignited at the correct moment. Moreover, the requirements of these parameters vary depending on, among other, engine speed and load. To meet these requirements in all occurring operation conditions, it is required that many subsystems work together.

The purpose of this paper has been to identify which modern search functions user of Smartphones are using, why just these functions are being used, and how they have affected the way users acquire information. Modern search functions in this paper means searches that are not based on text, i.e. ways to search for information by other means than writing something into a search field. To identify this, two studies were conducted, one with a questionnaire being distributed with the help of Google Docs through social networks, and one with four interviews with users of modern search functions for Smartphones. The study showed that even though 76 % of Smartphone users are aware of at least one modern search function, only 29% uses one on a regular basis.

So?kmotoroptimering eller SEO (Search Engine Optimization), har blivit enmycket viktig del na?r det ga?ller att profilera sig online. Det som avses medso?kmotoroptimering a?r att go?ra fo?ra?ndringar pa? en webbsida sa? att denplaceras ho?gre upp bland resultaten hos so?kmotorerna, och pa? ett sa?dant sa?ttfa?r en sto?rre exponering. Na?r man fo?rso?ker go?ra fo?ra?ndringar pa? en sida sa?kan man dela in fo?ra?ndringar i ?pa?? och ?utanfo?r? webbsidan, on och off-site.Fo?ra?ndringar ?on-site? betyder dels att man go?r fo?ra?ndringar i html koden ochdels att man fo?rso?ker go?ra sidan sa? anva?ndarva?nlig som mo?jligt.

Nyckelord används på ett flertal sätt för att nå högre rankning i sökmotorresultaten på webben och många författare inom ämnet beskriver hur viktigt det är att använda rätt nyckelord när man sökop-timerar sin webbplats. I litteraturen om sökmotoroptimering beskrivs och kategoriseras nyckelord på ett flertal sätt. Teori-delen i denna uppsats är tänkt att vara en samlingsplats för information om nyckelord. Detta för att skapa en samlad helhetsbild av nyckelordsprocessen och beskriva de olika kategorierna av nyckelord så att detta finns dokumenterat på ett och samma ställe. I den andra delen av uppsatsen beskrivs en empirisk studie som gjorts för att få reda på om andra manuella metoder än den traditionella brainstormingen kan användas för att ta fram passande nyck-elord till en webbsida. De testade metoderna är slumpordsassociation, negativ idégenerering och 6-3-5. Även brainstorming testades för att jämföras med de andra tre metoderna.

Syftet med arbetet var att undersöka hur lärare och elever interagerar med varandra och hur det naturvetenskapliga innehållet presenteras och kommuniceras under en naturvetenskaplig lektion på gymnasiet. Studien ingår i det nordiska forskningsprojektet Explora som arbetar med naturvetenskaplig undervisning och som har tagit fram en kodbok för detta ändamål. Utgångspunkten är sociokulturellt lärande, där kommunikationen är viktig för lärandet, där lärande innebär att socialiseras in i en diskurs och att språket används olika i olika kontexter. Undersökningen var till största delen kvantitativ och deduktiv men med kvalitativa inslag. Kodboken användes som analysinstrument och därmed gjordes en slags innehållsanalys.

The purpose of this Bachelor thesis is to analyze if there is a correlation between stock prices and the amount of searches of the companies names on Google. The theories used in the study were Capital Asset Pricing Model (CAPM) and Efficient Market Hypothesis (EMH). Regressions analysis is used as the statistical method to see if there is a significant correlation between the stock prices and the amout of searches of the company name on Google. The data used were the rate of return of three companies (ABB, Oriflame and Sandvik) on the Nasdaq OMX Nordic stock market, the rate of return of the Nasdaq OMX Nordic stock market index (OMX Stockholm_PI) and the Google search frequency from Google Trends on each company. The result showed no significance and the conclusion of the thesis is that there is no significant correlation between the three studied companies and their search frequency on the search engine Google..