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3381 Uppsatser om Power consumption - Sida 39 av 226
Utveckling av en Multi-Zonsmodell för NOx Bildning i Diesel Motorer
This thesis work is the last part of the Master of Science education inmechanical engineering at KTH, Stockholm.The aim of this project was the development of a Multi-zone modelfor NOxformation in Diesel engines. Because of the stringent emissionlegislations, great effort is made to decrease the fuel consumption and theharmful emissions of internal combustion engines. Computer simulationsplay a decisive role in this context because they substitute the expensiveand time-consuming laboratory tests.The model is based on a multi-zone approach and uses the wellknownExtended Zeldovich Mechanism which gives a relation to calculatethe NO formation rate using the concentration of different gas speciesinvolved in the process.All the most important phenomena involved in the Diesel combustionhave been modelled. A special attention is then paid to the equilibriumconcentration calculation; this is a significant part of the model whichstrongly influences the following steps.A Simulink model has also been developed. This second version isbased on the previous model and it is made especially to allow theconnection with other external softwares, GT-power in this case.
Hon tar vad man vill ha : en studie av sexuella maktrelationer i samtida relationsromaner
The aim of this study is to analyse the sexual power relations in contemporary urban novels of Swedish female writers.I have identified a discourse in these novels as a heteronormative matrix which power is ruled by norms and assumptions about normality in both the heterosexual and lesbian stories. For this purpose I have related to Ivar B. Neumanns theory that individuals always find a way to confront the discourse by three different strategies. These strategies are used in my study as tools to organise these novels, because it is possible to see that the protagonists find at least one of these strategy?s to her protest.The first strategy I studied was the docile.
Utveckling och implementering av Internetbaserade system för användarrekrytering
Power Challenge är ett spelföretag som är beläget i Linköping. Nyligen slog de sig samman med det Karlskronabaserade Manager Zone. För ett drygt år sedan bestod Power Challenge av cirka fem anställda men har idag expanderat till omkring 50 personer. Företaget har utvecklat ett fotbollsspel som heter Power Soccer. För närvarande håller de på att, förutom att ständigt vidareutveckla fotbollsspelet, bland annat utveckla ett bilspel.Syftet med denna studie var att på något sätt försöka effektivisera rekryteringen av nya´spelare till fotbollsspelet Power Soccer.
Förnybara bränslen är lösningen, vad är problemet? En maktanalys av den svenska dagordningen för förnybara bränslen
The aim of the thesis is to examine how central collective actors in the Swedish subsystem of renewable fuels use their positions of power and influence to their own specific interests and needs. In particular the thesis looks at the problems of climate change and oil scarcity and how renewable fuels are described as a potential solution. Using agenda setting theory and Steven Lukes three dimensions of power as a framework, five actors are examined and analysed. The study has been done in two parts. In the first part policy documents are analysed concerning the actors general stance towards renewable fuels, and how this is communicated to the media, politicians and public.
Pust och stånk! Meen vad roligt vi hade när vi fick igång det. : En diskurspsykologisk studie av personals samtal om barns delaktighet i dokumentationsprocessen på förskolan.
There are several competing views on how to best utilize air power. Following his quantitative study of air power, Robert Pape developed a theory which focuses on undermining the target state's military strategy. According to Pape it is possible to explain the outcome as a result of military vulnerability. This essay seeks to determine if Pape's theory can predict the outcome of Operation Unified Protector. By using a mixed methods approach on four hypotheses, it will be determined if the operation was a successful case of coercion, if NATO acted according to Pape's model and whether this achieved the desired effects or not. The results reveal that the theory could not successfully predict the outcome of the conflict.
Analys och beräkning av emissionsfaktorer för växthusgaser
An increased awareness about the global warming has created a demand for more information on how the climate is affected by different activities.This master thesis was initiated by Tricorona, a Swedish company that offers its customers analysis and calculation of their climate impact. Tricorona also supplies climate neutralisation with CERs, in accordance with the Kyoto protocol and controlled by the UN. This work demands updated emission factors for greenhouse gases. An emission factor gives information about the greenhouse gasintensity of a service or a product [kg CO2-eq./ functional unit].The purpose of this thesis is to examine how electricity, district heating, hotels, taxis, food and materials affect the climate and how emission factors for these areas can be calculated.This was done by reviewing and comparing different studies and by interviewing experts. The information was evaluated and recommendations on calculations and emission factors were made.The consumption of energy is the main source of greenhouse gas emissions for district heating, electricity, hotels, taxis and materials.
Effekten av betainsupplementering på prestationsförmågan hos vältränade cykelatleter
Bakgrund: Syftet med denna studie var att undersöka effekten av sju dagars tillskott av betain (2,5 gram/dag) på prestationsförmågan i idrottsspecifika tester för manliga vältränade cykelatleter.Metod: Sex (n=6) manliga testpersoner (genomsnitt ± standardavvikelse ålder, 31,7 ± 10,2 år; längd, 188,2 ± 3,6 cm; kroppsvikt; 82,5 ± 7,6 kg; fettfri massa, 71,6 ± 7,3 kg) genomförde förtester bestående av fem counter movement jumps, fyra stycken 12 s wingate-sprinter med 2,5 minuters aktiv vila följt av fem ytterligare counter movement jumps. De blev sedan indelade slumpmässigt i betain- eller placebogrupper. Första testet etablerade basvärden och eftertest ?1? samt ?2? föregicks med antingen sju dagars tillskott med placebo (2,5 g maltodextrin plus 12,5 mg riboflavin) eller betain (2,5 g trimetylglycin plus 12,5 mg riboflavin). Riboflavin användes för att undanröja den fiskliknande doften som kan uppstå vid tillskott av betain.
"Jag tycker det är en snäll typ av marknadsföring" : - En kritisk diskursanalys om content marketing i podcasts.
The aim of this study was to investigate in what way content marketing can be understood through podcasts as an alternative marketing tool. The material which the study was based on is Ölpodden, a podcast initiated by Carlsberg Sweden. The study intended to shed light on the interdiscursivity that emerges when brands are communicated through podcasts. Another aim was to understand how relationships and identities are constructed through the podcast by examining its intended audience. In order to achieve this a critical discourse analysis was used as both underlining theory and comprehensive method.
Politisk sekterism i Libanon : En fallstudie av Taif-avtalet och den konsociationella demokratins hållbarhet
Aiming to contribute to the discourse on the sustainability of consociational democracy in plural societies, this case study provides an examination of Lebanon?s power sharing model. The study begins with an evaluation of the Taif Agreement. After acknowledging its effect on Lebanon?s consociational system the function and operation of Lijphart?s four consociational elements are analyzed.
Läsande lyssnare ? lyssnande läsare. En kvalitativ studie av ljudboksanvändare
The purpose of this thesis is to investigate peoples experience when listening at audio books. During recent years the use of audio books has increased significantly. With that knowledge and the fact that this is an almost unexplored area within Library- and Information science our interest grew even stronger. The thesis is based on two different theories. To be able to place audio books in a context we have applied a media- consumption perspective by asking questions like when, where and how the media-consumption takes place.
Utvecklingen av energieffektiv teknologi i svenska datorcenter
This thesis investigate how energy efficient measures has spread throughout the data centers in Sweden. These questions are put up against a theoretical use of such concepts such as green IT, technological evolution, large technical systems and knowledge dissemination. These theories are used to answer the questions that are encountered during the study, such as how green IT is approached, how big of a role environmental thinking has had in the evolvement of these new technologies. The study has been conducted in a longitudinal manner, it is an observation of the phenomenon that is data centers over a longer period of time. 23 non structured interviews spanning over 27.5 hours of recorded material have been conducted alongside a study of archived material.
Förutsättningar att utforma stationsbatterier i vattenkraftverk med Li-jonteknik
In hydropower plants it is necessary to always have local power supply. Therefore, the plants are equipped with batteries as stationary back up power. Vattenfall Vattenkraft is using lead acid batteries but has been investigating alternatives to replace them. The aim of this study is to investigate the potential of using Li-ion technology as back up power.The study showed that Li-ion batteries have many qualities. The Li-ion technology will decrease the space and maintenance demand.
Orientalisk institution eller institutionaliserad orientalism? : En arkivvetenskaplig studie av Carolina Redivivas orientaliska handskriftssamling.
This thesis aims to shed light on the collection of Oriental manuscripts at the Uppsala University Library Carolina Rediviva and how the collection is a part of the collective memory. The main question which is central for this thesis is: have orientalism and structures of power influenced the acquisition, arrangement and methods of accessability regarding the Oriental manuscripts? If yes, in what way and why? If no, how has this been avoided?The theoretical framework consists of four approaches: phenomenology, sociology of knowledge, orientalism and power which are applied to the archival concept of collective memory. The main source of material consists of three parts: the historical texts which gives an informational framework regarding the time and place in which the manuscripts were collected, the catalogues in which the manuscripts are described and the transcripted interviews alongside correspondence. Methodologically the thesis is based upon a qualitative method which also partly makes up the foundation for the main material.
Prövning av ett praktiskt verktyg för att främja likabehandling i skolan
The purpose of this study was to examine the laws, govern documents and guiding principals that are available for schools and their work regarding the work against discrimination, insulting and other forms of harassments, and then to form a method for the schools to implement this work in practice.The work to counteract discrimination, insult treatment and other forms of harassments should be done both in a short term and a long term. In this paper there is a presentation of a project, a set of lessons that was created and carried out as a trial. The project aims for conscious making among children and students in school regarding norm, deviation, discrimination and power and the fact that equal treatment is hard to achieve. The basic purpose behind the project is to offer a tool to schools and teachers so that they can decrease the possible gap between the laws and the practice of these laws by creating awareness among students and other teachers. The long term work for achieving equal treatment should be done on a political level.
Dynamisk modellering av kärnreaktor
The purpose of this thesis has been to develop a tool for modelling and simulating the nuclear plant Ringhals 3. The model should be used to improve the knowledge on the dynamics of the plant. Ringhals 3 is being upgraded to produce more power and a tool for analyzing the new operating conditions is needed.The work in this thesis has consisted of improving and developing an existing model of Ringhals 3 made with the modelling tool Dymola. The model has been validated by comparing the results of a simulated house load transient with data from the actual plant. Validation shows good agreement with data from the real plant.