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10326 Uppsatser om Full-bore flow system - Sida 14 av 689

Tolkningen av L-system i realtid på grafikkortet

Arbetet undersöker grafikkortets lämplighet att tolka L-system i realtid. L-system är ett strängomskrivningssystem som beskriver strukturen hos botaniska former. Lsystem tolkas med hjälp av sköldpaddstolkningen för att få en geometrisk tolkning. För att utvärdera om grafikkortet är lämpat att tolka L-system i realtid har två system implementerats. Det ena systemet tolkar L-system på processorn och det andra systemet tolkar L-system på grafikkortet.

Geotermisk fjärrvärme i Gunsta

Gunsta is situated about 10 km east of Uppsala. Today there are plans to establish 1000 new households in Gunsta before year 2030. The required energy for heating houses and water would be distributed via a district heating system, which also includes 200 existing residences. The annual required energy, according to this study, would be 16.2 GWh with a maximal peak effect of 6.9 MW. To meet this need, the study suggests a system with heat pumps to upgrade the 31?C water from a 1.8 kilometre deep borehole.

Vilka motivationsfaktorer är det som ligger bakom toppsäljares framgång?

Denna kvalitativa motivationsstudie utfördes på åtta svenska toppsäljare och utgick i från Vallerands hierarkiska modell om inre och yttre motivation (1997) och även från Czikszentmihalyis teori om flow (1990). Syftet med studien var att ta reda på vilka motivationsfaktorer som förenar toppsäljare. Toppsäljarna intervjuades enskilt genom en semistrukturerad intervjuguide. En tematisk analys utfördes på utskrifterna från intervjuerna och analysen undersöktes utifrån tre huvudkategorier: inre motivation, yttre motivation, och flow. Resultatet visade att toppsäljarna hade en stark inre drivkraft att utvecklas, att nå egna mål och uppnå positiva känslotillstånd av själva utförandet.

Ökad kapacitet i Stockholms kollektivtrafik - Kan T-Centralen med enkla finansiella medel öka sin kapacitet

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.

Processförbättring med hjälp av TMMi-Modellen : Utvärdering av en testprocess på ett medelstort företag

Storleken och komplexiteten på dagens system och applikationer ökar. Detta leder till att kraven på system och applikationer ökar också eftersom kunderna kräver av dagens system full funktionalitet inom olika typer av distribuerade miljöer. Kunder är inte bara intresserade av funktionerna i systemen och applikationerna, de förväntar sig också att systemet skall vara av god kvalitet. Av dessa skäl är det mycket viktigt att testa system och applikationer för att säkerställa att de uppfyller kundernas förväntningar. Däremot är det inte bara själva mjukvarans kvalitets frågor som organisationer behöver ha i åtanke, en lika viktig del är själva testprocessens kvalitet.

Anaerob nedbrytning av TNT : Ett bioreaktorförsök på Vingåkersverken

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.

Internationell ekonomi och svenska institutioner - välfärd, solidarisk lönepolitik och internationalisering

The topic of interest is why Swedish unemployment after OPEC - 1 remained exceptionally low, compared to the OECD average. The object of study is the evolution of welfare institutions, like the Rehn ? Meidner model, after WWII, and the aim is to explore why the institution of solidaristic wage bargaining collapsed coming the nineties. Deployed theoretical perspectives are how domestic institutions determine a country's adaptation to alterations of the international economic system. However, equally important are how policy objectives, like full employment, becomes institutionalized and therefore guides the actions undertaken.

Läsa och samtala : Vad betyder folkbibliotekets bokcirkel för användaren?

The aim of this Master?s thesis is to investigate the meaning the reading group of the public library has to a number of users. To fulfill the aim the following three questions have been formulated: 1) What do a number of users expect from the reading group of the public library? 2) Which approach/attitude or approaches/attitudes do a number of users have to reading and to talking about reading? 3) How do a number of users experience the ongoing reading group?The research is founded on qualitative interviews with five users that take part in three different reading groups in public libraries. The theories that are used is the theory of three so called strategies - the pragmatic, the traditionalistic, the emancipatory ? and the theory of flow.

Framtagning av en rörväxlaretill sopsugsystem

The main goal of this project was to develop some sort of a diverter for pipestransporting waste in a vacuum system. This unit was supposed to be both cheap andeasy to serve/exchange worn out parts. With a limited space to install the pipeexchanger, the challenge was to keep it as compact as possible without constructingbends with to small radius or to sharp angles as this would wear out the system a lotfaster than planned. The system was also supposed to be able to handle clothes andscrubs from hospitals. Having too much sharp edges or angles would tear the clothesapart.

Analys, design och implementering av Orbit ones dokumenthanteringssystem

This report describes the development of a system for controlling documents. The report starts with a problem description which the company wants an intranet-based solution for. The report then continues to describe the development phase for the different parts of the system which results in a complete system. The company that wanted this system is called Orbit One and is located in Ronneby, Sweden. They have had a problem with old documents circulating in different versions and in different binders.

Självkörande fordon : En analys av energianvändning och kapacitet

Self-driving cars are soon to become a reality to the commercial market. A self-driving car does not have a human operator, which enables some interesting characteristics. The main benefits are considered to be:The number of accidents and traffic jams should be reduced.Enhanced comfort.Energy usage could be decreased while capacity could be increased.This study concerns the causes for improved energy efficiency. The reason for improved energy efficiency is mainly because of the variation in terms of acceleration, braking and distance holding are reduced. The vehicles are more intelligent and can work together as a unity.

Utveckling av en beräkningsmodell för biogasproduktion

A growing interest for the climate and the environment has led to an increased interest forenvironmentally friendly and renewable energy sources, such as biogas. Planning new biogasplants requires a decision basis including facts about approximate amounts of biogas possibleto produce at the plant. The purpose of this thesis is to develop a model that calculates theapproximate biogas and digestate production from a planned or existing biogas plant.Developing the model required a literature review and studies of calculations concerningbiogas and digestate production performed by WSP Sweden AB. As a complement to themodel development, facts about substrates for biogas production were compiled through aliterature review. In addition the methane potential from selected materials was determined bybatch experiments.

Modellering av rotationssystem

This master thesis was conducted during the spring of 2014 at Atlas Copco Rock Drills AB in Örebro. The purpose of the thesis was to develop a simulation model of the rotation system for a hydraulic rock drill. In the future, the model will be used to investigate the phenomena called ?jerky rotation?. In order to validate the simulation model a test bench was designed and tests were made.

Simulering av översvämningar i Byälven

Severe floods caused by heavy autumn rains in year 2000 raised the question whether measures to reduce the damage from high water levels, in the area surrounding lake Glafsfjorden and along the river Byälven down to lake Vänern, are possible. One option is to reduce flow resistance along the river and thereby lower the maximum water level a given inflow would cause. Good knowledge of hydraulic and hydrological conditions is necessary in order to estimate the effect of such flow-reducing measures. In order to quantify such effect a 1-dimensional hydraulic flow model has been set up for the river Byälven using the software package MIKE 11. The model is more detailed, especially concerning topography and bathymetry, than earlier models used for studies of the river.

Projektering av småhus med solvärme som huvudkälla

In this report a study has been done regarding different heating systems on which are the mostcomprehensive with solar heating systems. The report has also been focusing if solar power can beused as a primary heating source for supplying more than 50 % of the buildings total heatingproduction. The University of Dalarna constructed a demo-house for this purpose and according tocalculations the total solar usage is more than 50 %. This house has been made for referenceregarding the design of the heating system of property 5:37.Further studies have been made to compare different heating systems that are compatible with asolar system, where the compared systems purpose is to be independent of direct using electricity. Asystem of this design is regarded as sustainable according to environmental as economic issues.

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