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Estimating Balancing Capacities of Electric Vehicles on the German and Swedish grids in 2030Shabir Ahamed, Zaheer Ahamed January 2018 (has links)
The rising awareness of the pollutions from transports is leading to innovations withinthe transport sector. Electric vehicles (EVs) are leading technologies riding this wave.With many countries like Germany and Sweden joining the so-called EV30@30campaign, aiming for 30% of new electric vehicles sales by 2030. These ambitionsalongside an ever increasing capacity of variable renewable energy sources (RES) inour power systems, pose a concerning challenge for TSOs to maintain proper powersystem operation. Imbalances between supply and demand are undesirable in anyelectrical power system and with the rising popularity of EVs and RES such events areonly expected to continue or even increase.Fortunately, with the recent development of V2G concepts as well as extensivestudies into the load-shifting potential of EVs, EVs presents an interesting solution forpower system balancing distributed energy storage system. With the establishment ofenergy storage systems as possible balancing reserves on the grid, this study attemptsto simulate real-time grid balancing operation of EVs to analyse their ability toimprove operation of the grid. In this study the characteristics of EVs as an energystorage system are analysed, based on present traffic behaviour, and their balancingcapacity estimated. Furthermore a brief analysis of the impacts of such an operationstrategy on the electric vehicles themselves is also carried out.The study showed that EV are capable of balancing the grid for approximately 60% ofthe time providing 55-60% of the total balancing energy required. The EVs alsoexhibited a high balancing power even at low penetration levels. However, they didshow a tendency to reach its limits and signify their inadequacy to be the solebalancing reserve. The operation also took heavy toll on the EV's batteryperformance as it could potentially reduce its life to a 1/7th of its original lifetime. Thestudy also emphasizes the need for further studies and analysis to reach a morecomprehensive conclusion.
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SASHIKO Japanskt broderi i textilslöjdsundervisningenEliasson, Inga-Lill January 2018 (has links)
Studien bygger på mitt eget intresse för broderitekniken Sashiko. Jag valde attpröva sashiko som arbetsområde i undervisningen då jag arbetade somtextillärare. Jag upplevde att sashiko kunde anpassas till styrdokumenten, atteleverna kunde arbeta på olika nivåer och att resultatet av det de producerade blevväldigt lyckat. Icke desto mindre tyckte både jag och eleverna att det var ett roligtoch utvecklande arbetsområde. Ämnesområdet är nytt i undervisningen och jagville utveckla min kunskap om hur andra lärare planerar, genomför och utvärderarsin undervisning i sashiko. Jag har intervjuat fyra textillärare om deras innehålloch metoder i undervisningen. Studien har utgått från läroplansteorin, och jag haranvänt en halvstrukturerad intervjumetod. Textillärarna har svarat på frågor somrör det didaktiska fältet i undervisningen. Deltagarna i studien har utvecklatundervisningen i sashiko utifrån sitt eget intresse för tekniken. Att den gereleverna rika möjligheter till egna val framhåller de som en viktig faktor till denpositiva inställning eleverna har till tekniken. Studien slår bland annat fast attlärarna saknar läromedel i sin undervisning, de efterlyser mer tid att träffakolleger och att de ser stora möjligheter att utveckla sashiko i undervisningen.Tidigare studier har visat att lärare ofta hämtar inspiration från tidigare praktik,egen skolgång, VFU eller traditioner i yrket, vilket inte lärarna i föreliggandestudie gjort.
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Your Exotic, Your Victim, Your Terrorist. : Visual storytelling to challenge the Western stigma of Arab women living in areas of conflict.Alchalabi, Hayfaa January 2018 (has links)
This thesis aims to explore how illustrative storytelling can challenge the western stigma of Arab women in areas of conflict. This exploration will be done through an analysis on the history and the current visualization of Arab women in the west and a series of illustrations I will be creating that propose a narrative opposing this visualization. My study will show how the visual references used for my research have had a major effect in shaping the image of the Arab women in the west. The aim of this project is to use the same characteristics that fall under the stereotypical visualizations of Arab women to challenge the stigma of classifying these women as; the terrorist, the exotic, and/or the oppressed. The purpose of my project is to create a change in the way the western audience perceives Arab women in areas of conflict. I will therefore analyze in this essay how western media and art have shaped the collective view the west has on Arab women. Furthermore, the essay will explain how storytelling proposes a rejection to the static depiction of Arab women in western media and introduces instead an element of an evolving story. This project proposes a sustainable way of looking at gender and conflict in the Arab world provoking questions around the visualization of these women and creating discussions about the accuracy of the perception the west has created. This in turn re-contextualizes the visualization of the identity of Arab women in the west with the aim of breaking the objectification these women.
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Utredning av kylsystem med samberedning av tappvarmvatten för god termisk komfort i nybyggda småhus : Modellering och simulering av fyra kylsystemlösningar för tre lokaliseringar i Sverige med avseende på energi-, klimat- och kostnadsberäkningarEkvall, Alexander January 2018 (has links)
I takt med striktare mål för energianvändning och krav på energieffektivitet skärps energikrav för småhus successivt. Moderna småhus isoleras kraftigare och görs mer lufttäta i syfte att minska transmissionsförlusterna vintertid och därmed också energiåtgången för uppvärmning. Ett ökat fokus på att minska småhusens energianvändning vintertid slår tillbaka sommartid då moderna småhus kan konstateras ha en förhöjd överhettningsrisk med sämre termisk komfort och med negativa hälsoeffekter som följd. I arbetet används Simulink för att simulera prestandan hos fyra systemlösningar för produktion av komfortkyla och tappvarmvatten. Systemlösningarna som modelleras är ett resultat av ett samarbete med Swegon AB som vill undersöka potential i frikyla samt ny, icke etablerad teknik. Systemlösningarna består av en referenssystem med luft-luftvärmepump, därefter: (1) absorptionskylmaskin driven av solfångare: (2) frikyla från borrhål med bergvärmepump: (3) frikyla med uteluft via FTX-aggregat, lagringstank för kyla och stöd av luft-vattenvärmepump. Resultatet visade att frikyla och tappvarmvatten med bergvärmepump hade den bästa energi- och miljöprestandan. Systemet med en absorptionskylmaskin driven av solfångare var, trots användningen av solfångare, klimatmässigt sämst. Systemet blir troligtvis för dyrt då huset blir beroende av ytterligare system för uppvärmning vintertid vilket driver upp kostnaderna. Frikyla via utomhusluft blev det näst bästa alternativet ur ett energi- och miljöperspektiv men lider av höga investeringskostnader på grund av många komponenter för att systemet ska fungera. Simuleringarna visade att potentialen för lagring av frikyla från utomhusluft via FTX-aggregat är relativt god men att det fanns få tillfällen under året då kylan kunde användas. Att kunna bereda tappvarmvatten med annat än enbart el kommer bli viktigare för att inte riskera att överskrida BBR:s energikrav. Att komplettera klimatskalet med åtgärder som hindrar solinstrålning från att ta sig in i byggnaden kan vara en åtgärd som kan förändra resultatet i utredningen. Det gör att det är nödvändigt med vidare studier där hänsyn tas till fler parametrar, exempelvis husets värmetröghet. Vidare studier bör även kompletteras med en analys av husets värmebehov vintertid innan en slutgiltig slutsats kan dras om vilken systemlösning som kan bli ett kommersiellt gångbart alternativ på marknaden.
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Claim management in EPC-Projects : A case study of claim causes and claim management during plant installationSöderlund, Matias January 2018 (has links)
When several parties are involved in a construction project are conflicts inevitable, and when one party feel that another party are not following their work according to the agreed contract, can they issue a claim. Claim management and causes of claims has been addressed by previous research, but there is lack of attention to study claim management specifically in EPC-projects. The purpose of this thesis is to shed some light on claim management and identify cause of change claims, specifically in the context of EPC-projects. A case study was conducted within an organisation that executes complex plant EPC-projects, where several parties are involved. This thesis has applied tools of root cause analysis in order to identify the causes of change claims, and conducted focus groups and semi-structured interviews to better understand problems associated with claim management and how the relationship between two parties affects claims. The thesis concludes that the most common root causes to sub-contractor change claims are related to design where not enough information for design input has been provided, or related to installation where sub-contractors issue change claims in order to fix conflicts caused by themselves. Other major root causes are related to insufficient instructions provided by the principal organisation or requests of changes by one party. The thesis also concludes that claims during plant installation are avoided since more time is required for settling an official claim. Poor documentation is a major reason why the settlement of official claims requires more time. Further does this thesis conclude that the relationship between two parties does not affect claims, and in contrast might the relationship benefit from claims if causes are treated properly.
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The influence of different innovation enablers on the adoption of Industry 4.0 by SMEs and large companies. : A comparative case studyVilla, Giacomo Gherardo January 2018 (has links)
This research uses a comparison among seven different case studies to study how different innovation enablers leading to Industry 4.0 have different effect on different sized companies. To do so, the seven companies taking part in the study are divided between SMEs and large companies. In order to develop the framework which is then deployed to the companies in the form of a self-assessing questionnaire along with open questions, relevant literature from both the study of innovation adoption and Industry 4.0 is used. The findings of the study, which due to respondents’ availability is limited to Italy, suggest that two main groups of enablers are very important for SMEs and three group of enablers are relevant for large companies. While both groups value the decrease in the cost of operations and the government incentives currently available in Italy as important enablers, the large companies also consider the prior organisational readiness to adopt industry 4.0 as crucial. The study also finds that another dimension which would be interesting to investigate in order to better understand the adoption of innovation by industrial manufacturing companies regards the type of production performed by the company, identifying customised production as more open and ready to adopt Industry 4.0 on a large scale. The thesis has been developed in collaboration with Rohrbeck Heger GmbH along with a consulting project having a very similar objective.
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Fyra tusen mörka gastar : En retorisk analys av ett urval av allmogens skrifter och tal under 1743 års DalupprorKoserius, Niklas January 2018 (has links)
No description available.
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Monteringsfixtur fönster och ytterdörr / Fixture for mounting windows and doorsGustafsson, Linus, Eklund, Emil January 2018 (has links)
This is a master thesis written by undersigned students at Mälardalens University. This report consists of a project where the goal is to develop products for the mounting fixtures for windows and exterior doors to the company Husmuttern AB. The company Husmuttern AB is working to develop modular housing for constructions with the help of fixtures. The idea behind the usage of fixtures is that anyone even those with no previous experience should be able to build the parts for the finished house. This will be achieved by using an interactive screen with instructions that are easy to understand, even if you do not know the language. This project has dealt with everything regarding the development of walls with windows and exterior doors. Namely, the choice of both windows and exterior door models and the development of frameworks for the walls and finally the development of support for the beams to make it possible to build these walls in the fixtures.
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Det är inte ett problem utan en utmaning : En litteraturstudie om strategier vid problemlösning i matematikSvensson, Julia, Lindström, Anna January 2018 (has links)
No description available.
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”Oförklarliga vredesutbrott, våldsamheter och obehärskade handlingar” : En kvalitativ innehållsanalys av motioner och propositioner beträffande dopningsbrott / “Unexplainable outbursts of rage, violence and uncontrollable actions” : A qualitative content analysis of government bills regarding doping feloniesPeltola, Simon January 2018 (has links)
Uppsatsens syfte har varit att utreda hur dopningsbrott konstrueras i motioner och propositioner. Frågeställningarnas fokus har riktats mot hur dopningsbrott beskrivs gällande gärningsman, orsaker, följder och prevention. En frågeställning har även avhandlats om huruvida det David Garland kallar för symbolic denial förekommer i materialet. Kvalitativ innehållsanalys har använts som metod, där 51 olika motioner och propositioner granskats. I resultaten framgick det att den politiska debatten om dopning kan delas in i fyra huvudsakliga kategorier: orsaker till dopning, konsekvenser av dopning, förslag på förebyggande åtgärder och substansen och brottets karaktär. Resultaten visade att det råder en uppfattning om att dopning sker främst bland unga män, till följd av rådande ideal. Biverkningarna som dopningspreparat kan ge upphov till ses som de främsta konsekvenserna. Majoriteten av förslag på förebyggande insatser yrkar på kontrollpolitiska åtgärder. Det kan även argumenteras att ett symboliskt förnekande förekommer i texterna. / The purpose of this paper has been to investigate how doping felonies are constructed in government bills. Questions have been aimed at how doping felonies are described regarding perpetrator, cause, consequences and prevention. A question regarding David Garland’s coined symbolic denial and it’s occurrence in the texts has been covered. Qualitative content analysis of 51 different government bills has been employed as a method. Results showed that the political debate regarding doping can be divided into four main categories: causes for doping, consequences of doping, suggestions for preventive strategies and the substance and felony’s character. Results showed a prevailing perception that doping occurs mainly among young men as a consequence of prevailing ideals. The side-effects of doping substances are viewed as the main consequence. Suggestions for preventive strategies are mostly based on formal social control. It can be argued that symbolic denial does occur in the texts.
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