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298 Uppsatser om Boundaries - Sida 17 av 20

CFD simulering av en fyrtakts Otto motorcykel motor

This thesis deals with the numerical 3D simulation of a four stroke, spark-ignited, internalcombustion engine, which is mounted on a high performance motorcycle. The work, carried outin collaboration with Politecnico di Milano and MV Agusta, focuses on the simulation of theintake, compression and expansion stroke, including combustion simulation, using an opensource CFD code.Simulation of internal combustion engines offers a great challenge in the field of CFD research.Moving Boundaries of the solution domain, caused by the motion of the piston and valves, leadsto deformation of the computational grid, with decreasing quality of the solution as result. Basedon this, a previously developed mesh motion strategy was employed where a number of meshesare used to cover the whole simulation cycle. Within each mesh interval the internal cell pointsof the mesh are moved to account for the boundary motion of the piston and valves. This strategywas previously applied to simplified geometries as well as real engine geometries.

Dragare, täckningsgrader och önskelådor : systematisering och råd för grönplanearbete

We came in contact with the project "Grönplan Danderyd" that aims to create a green structure plan for a municipality of Stockholm called Danderyds kommun. Our thesis is a part of this project and makes it's contribution through the gathering and systematization of the knowledge of the functions of an urban green structure. It also makes a contribution through suggesting how this knowledge can be applied during the construction of an urban green structure plan. We found that "Stadens parker och natur", published by the Swedish National board of Housing, Building and Planning, was a recurrent source of information in the green structure plans that we studied. We saw a need of complementary additions and updates to the rather old report and found literature that adds the developments of the last decade. First of all we have chosen to make themes based on the functions of a green structure that were presented by 'Stadens parker och natur'. The themes we suggest that a greenplanning document manage are: Recreation, Pedagogies and Heath, Biological Diversity, Green structure in the History of Building Cities, Cultural Identity, the Health of the City, Biological Technology in the Municipality and Use and the Users. We found good examples of how to handle these themes in documents that handle greenstructure planning from the municipalities of Göteborg, Strängnäs, Eskilstuna, Malmö, Lund, Västerås and Uppsala.

GPS-­baserad virtuell geografisk inhägnad för mobil enhet

The aim of this paper is to find an algorithm to establish and maintain a virtual enclosure around a mobile unit. The area may take any form and should be scalable up to and including national borders. The enclosure is managed on the mobile unit. The target system is Android. Smartphones, tablets and more recently, cameras is examples of mobile units.

Transporttidsmodellering vid provpumpning i heterogen jord : spårämnesförsök i en isälvsavlagring

When protection zones for wells are delineated, it is important to acquire good knowledge about possible travel time from different points in the catchment area to the well. Often, simple analytical methods are used for estimating travel times and the assumption is made that the hydraulic conductivity is relatively homogenous within the aquifer. Nevertheless, many aquifers are strongly heterogeneous which may lead to differences between estimates and actual travel times. As a part of the process to develop improved methods for delineating protection zones for groundwater supply wells, a tracer experiment was performed in a glaciofluvial esker formation in Järlåsa. On the basis of the experiment, a numerical flow model was created for the test site.The purpose of this master?s thesis was to apply the flow model to an aquifer where the hydraulic conductivity shows great variability and should be described by a stochastic distribution.

Utmattningssyndrom : En gränssättningsproblematik

SammanfattningStressrelaterad psykisk ohälsa såsom utmattningssyndrom, är en komplex problematik som varit mycket omdebatterad. Åtskilligt är publicerat i ämnet, men bara ett fåtal studier finns där personer med utmattningssyndrom själva fått möjligheten att beskriva orsakssambanden. Olika förklaringsmodeller och perspektiv beskrivs i litteraturen, men den rådande uppfattningen om varför människor drabbas utgår ofta från ett arbetsrelaterat perspektiv. Vi ville utforska om den rådande föreställning i ämnet stämmer överens med den uppfattning människor som drabbats av utmattningssyndrom har om orsakerna till symtomen. Vår ansats var även att undersöka om det kan finnas fler eller andra orsakssamband till utmattningsprocessen. Vårt syfte med studien är; dels undersöka hur individer med utmattningssyndrom upplever vilka orsaker som är av betydelse för utmattningsprocessen, dels försöka beskriva och analysera dessa utsagor i ett vidare perspektiv. Till studien valdes en kvalitativ metod och data samlades in med hjälp av intervjuer utifrån specifika forskarfrågor.

Hard Decisons, Soft Laws : Exploring the authority and the political impact of soft law in international law

The question of whether there is soft law in international law has been as much the subject of contemporary debate as whether or not there is private legal authority in the international society. The legal Boundaries seem to be blurred by the process of globalisation and the recent shift in international law. The traditional definition of international law has been outdated as new forms of treaties has introduced new subject of law to the judicial arena. At the same time a supplementary map of law has been added to the cartography of international law, soft law. These correlating processes have comprehensive political and legal consequences at both the international and national levels.

GPS-­baserad virtuell geografisk inhägnad för mobil enhet

The aim of this paper is to find an algorithm to establish and maintain a virtual enclosure around a mobile unit. The area may take any form and should be scalable up to and including national borders. The enclosure is managed on the mobile unit. The target system is Android. Smartphones, tablets and more recently, cameras is examples of mobile units. A modern mobile unit is part of a computer network.

Ett brev från Herr P : om det personliga hos Björn Lövin

For the Swedish artist Björn Lövin, the personal was a problem. In his first exhibition in Moderna Museet, Lövin observed through the fictitious character Mr. P (for »Personality«) the ruptures in the Swedish welfare state. The exhibition Konsument i oändligheten och Herr P:s penningar (Consumer in Infinity and Mr. P?s Money) (1971) was composed of two environments, through which a veridical working class apartment and a high street with life-sized mannequins and furniture characteristic of its time, visualized the societal discrepancies in the welfare state as well as the art world of the early 1970s.

Kampen om klasskampen : en undersökning av de politiska maktförhållandena inom Grov 84:an i Västervik mellan 1925-1930

After being excluded from the Swedish Social Democrat party in 1917, the Revolutionary Socialists founded the Social Democrat Left Party. From this point onwards, the Social Democratic hegemony and dominant position within the Swedish workers movement and political landscape was challenged. This thesis aims to investigate the power struggles between these two parties, the Revolutionary Socialists and the Social Democrats, and their desire to influence control of the unions. Taking cues from earlier research calling for a more localized look at this struggle, this thesis turns to a case study of union matters of the the Factory Workers Union Local 84, at Västerviks Tändsticksfabrik, a match manufacturer and largest employer in the Swedish coastal town of Västervik from 1925 to 1930. Organizational material including meeting protocols, annual reports and member registration lists from the local political parties, cooperative union organizations (VFS) and Local 84 serve as secondary data sources.

Homestaging : Fenomenet & avdragsrätten

Around year 2004, a new service was introduced on the Swedish housing market with the purpose of increasing the sell price, namely homestaging. Homestaging means that a home gets in order before a open house, for example by removing personal affections or the leasing of new furniture. The phenomenon originates from the United States, where it has existed for several decades.Most components, but not all, that is included in the homestaging concept is tax-deductible and this has lead to several questions around the law and foremost within tax law. To elucidate this complexity of problems around the right to deduction for homestaging, the Swedish tax agency, Skatteverket, has formulated a letter stating the authority?s attitude towards the phenomenon.

Den fria leken - en studie av styrning och gränser. The free play - a study of governance and boundaries.

Vårt examensarbete handlar om styrning av leken samt pedagogers förhållningssätt till, och tankar kring den fria leken. Studiens teoretiska utgångspunkt har varit Charlotte Tullgrens avhandling om makt och styrning, Den välreglerade friheten. I den empiriska delen används intervjuer med pedagoger samt observationer av barn under deras fria lek. Syftet med vår studie har varit att undersöka vilken styrning som syns i den fria leken på två förskolor och i en förskoleklass, samt vilken syn pedagogerna har på den fria leken utifrån begreppet styrning. Frågeställningarna vi har utgått ifrån är: · Vilken syn har pedagogerna på den fria leken? · Vilken styrning syns i den fria leken? Resultatet av vår undersökning visar att det förekommer mycket styrning av barnens fria lek. Leken styrs av många olika faktorer och frågan är om det överhuvudtaget finns någon helt fri lek? Pedagogerna har olika uppfattning om det.

Kommunikation utan gränder? : en studie om problemen kring Göteborgs kulturkalas  kommunikation till mångkulturella områden

Authors: Stina Johansson, Anna Lennartsson, Caroline WennerstenTutors: Peter Caesar Title: Communication without Boundaries? ? a study about the problems of Gothenburg culture festival communications to multicultural areas.Keywords: communication, multucultural areas, communicationmodel, attitudes, diversity marketing, culture, Gothenburg Culture Festival  Background: There can be many problems with communication in multicultural areas. It has become more important for companies to communicate in order to gain competitive advantage. Gothenburg Culturefestival has a large number of visitors and since last year they have noticed that there are not as many visitors from some multicultual areas in Gothenburg. This makes it interesting to see what kind of problems that exists in the current communication. Problem statement: What noise is there in communicating to a multicultural target group and how does they affect the goals and the result with the communication?Purpose: The purpose of this paper is based on the communicationmodel and from there describe the communication between companies and multicultural areas, and from this identify problems with such communication.Method: 118 respondents were selected through a convenience sample and then  asked questions through structured interviews based on a questionnaire.

Undersökning av svetsegenskaper för svetsning med rörtråd kontra homogen tråd

Welding is a common method for joining of metal or plastic construction parts. This report describes several different weld methods in general terms. The report focuses on the GMAW method, specifically MAG welding.A case study has also been performed for the company Wenmec. The task received from the company was to compare the mechanical properties of joints welded with the tube electrode called Nittetsu SM-3A and joints welded with the homogenous electrode called ESAB Aristorod 12.63. Both types of weld joint were welded with the MAG method with an Argon based shielding gas with 18% CO2.

Upprustningsmetoder för en bankropp : En jämförelse ur ett LCC-perspektiv

In recent years, the Swedish railway track system has been neglected in terms of capacity and maintenance. To adapt the existing system to current traffic load there is a great need for extensive improvement and maintenance. Shortcomings are especially occurring on older embankments running over soft subgrades. To select the most suitable method for reinforcement of the embankment, it is important to evaluate different solutions from a life cycle cost perspective. In long-term perspective, it is often shown that a method with low investment cost causes a higher maintenance cost and a shorter technical lifetime.

Ett steg längre. Folkbibliotek och högskolebibliotek i ny samverkan.

The aim of this Master's thesis is to discuss and analyse co-operation between public and academic libraries. The political changes that were initiated during 2004 have come to alter the conditions for Swedish libraries. The Swedish library law was changed at the 1st of January 2005 and co-operation between libraries is now statuary even if there is no description of how the new mission is to be executed. At the same time an extensive report about the Royal Library and its role as the Swedish National Library was presented. This report also recommended an increased co-operation between different types of libraries.

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