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2710 Uppsatser om Power electronics - Sida 52 av 181

Underlag för bedömning av energibrunnar inom vattenskyddsområde

Denna rapport beskriver arbetet med utvecklingen av en ny modell för kaplanturbiner. Utvecklingen bygger på två kopplade differentialekvationer som under arbetets gång anpassats och implementerats i turbinmodellen.Modellen beskriver hur vattenflöde och turbinmoment påverkas av avvikelsen från den optimala kombineringskurvan för vinklarna på turbinens ledskena och löphjul, och är anpassad för ett referensaggregat med tillgängliga provdata. Även övriga enheter i vattenkraftaggregatet modelleras och sätts samman med frekvensregulator och elnät för att simulera aggregatets reglerstabilitet i önätsdrift.Verifieringen av turbinmodellen sker genom försök att återskapa de befintliga verkningsgradskurvorna med hjälp av modellen. Resultatet visar en god följning av de verkliga kurvformerna, dock med något lägre maximal verkningsgrad.Verifieringen av önätmodellen sker genom att prova stabiliteten i nätfrekvens och turbineffekt vid stegpålastningar. Resultatet ger en stabilare reglerstabilitet än i verkligheten, men uppfyller ändå förväntningarna på en fungerande modell.This report describes the development of a new kaplan turbine model.

Trygga platser eller igenbommade rum? : En intersektionell och fenomenologisk studie kring inkludering och exkludering i feministiska, så kallade egna rum

The focus of this essay is on the mechanisms of inclusion and exclusion in different feminism rooms. Seven activists taking part in several forms of feminism projects, organisations, networks and demonstrations are interviewed and the essay analyzes whether the participants themselves feel included or excluded in feminism rooms. If they have motives to include or exclude different groups of people are something that is also looked into. Intersectionality and phenomenology are used as an analytical and methodological approach throughout this essay. The results have shown that the participants feel included and excluded due to different intersections of power.

?Vems barn vill du att jag väljer bort?? En kvalitativ studie i en kommun i Västra Götaland om fem skolkuratorers upplevelse av stress i arbetet

The purpose of this study was to examine how school counselors in a specific municipalityviewed their work situation, if they experienced stress and how they would handle that stress.Five school counselors out of eight in the specific municipality participated in qualitativeinterviews where they could describe their feelings and thoughts. Their experiences wasexamined and analyzed with the theories of coping and empowerment. The results showedthat there were unhealthy levels of stress in the profession amongst the five counselors. It alsoshowed that the uttermost reason for the experienced unhealthy stress was the feeling of notbeing able to give as much time and help to the pupils as they want and need. The reason forthis was that an increasing number of pupils were, and are, experiencing unhappiness and arein need of seeing the school counselor.

Neutral bolagsskatt? : Analys om SOU 2014:40 skapar neutralitet mellan lånat och eget kapital

This paper examines the power producing dams along the Ume-river as an integral part of and a result from the urbanization process in Sweden during industrial capitalism. The aim of the paper is to contribute to the knowledge of the urbanization process in Sweden in general and of its traces along the Ume river in the county of Västerbotten in particular. The paper applies the theory of concentrated urbanization and extended urbanization put forward by Neil Brenner and Christian Schmid (2015) and argues that the building of power producing dams along the Ume-river is part of an extended urbanization process. This becomes particularly evident when examining the vast physical structures that is the dams, situated in an otherwise remote and sparsely populated area. These vast physical structures are also very well connected to a nation wide electric grid that has connections to bordering countries as well.

Rörelsens inverkan på barns inlärning : En studie om hur fysisk aktivitet påverkar barns inlärning utifrån ett fåtal lärare och elevers åsikter

The purpose of this investigation is to find out how the children?s exercises affect their learning capabilities. With exercise, I mean all kinds of movements, like physics, walks and games.The method I will use in this investigation is interviews, where I choose to interview both teachers and their pupils at a school which uses an exercise-program called röris. Röris is an exercise program which involves moving to music. I also choose to look at Bunkefloprojektet, were scientists has investigated how the power of concentration is affected by exercise.My conclusion from the interviews and the literature is that I can?t prove that the children?s exercises affect their learning capabilities.

Ung? Var god dröj! En diskursanalys kring ungdomsarbetslöshet och fördröjd etablering på arbetsmarknaden

Youth unemployement in Sweden is at an all-time high, a fifth of all university and college students live in poverty and the number of young on welfare is increasing. This study attempts to answer the question of how youth deprivation has been made possible as a consequence of political action, focusing on youth unemployment. I critically examine the role of the Swedish government, the Swedish Labour Organisation (LO), and the various government departments through text analysis, in order to answer the question of how the current discourse on youth position in the labor market. Because youth unemployment is not an isolated phenomena the analysis covers several policy areas, such as education policy, labor market regulation and housing policy. I use discourse theories drawn from Laclau and Mouffe to expose how language is used as an instrument of political power. I conclude that the current situation is a result of policy choices where the young have fallen behind due to lack of political organization. Their situation is not problematized to the required degree and is often explained on an individual level rather than on a structural level. .

Design and Analysis of an All-optical Free-space Communication Link

Free Space Optics (FSO) has received a great deal of attention lately both in the military and civilian information society due to its potentially high capacity, rapid deployment, portability and high security from deception and jamming. The main issue is that severe weather can have a detrimental impact on the performance, which may result in an inadequate availability. This report contains a feasibility study for an all-optical free-space link intended for short-range communication (200-500 m). Laboratory tests have been performed to evaluate the link design. Field tests were made to investigate availability and error performance under the influence of different weather conditions.

Med en vilja av järn och nävar av stål : Hertig Karls väg till makten sett ur ett machiavellistiskt fursteperspektiv

In 1513 the Florentine humanists Niccolò Machiavelli composed one of the most famous, but also ambiguously interpret, work in the history of politics, Il Principe. Machiavelli´s book The Prince revealed the true nature of politics in Italy in the beginning of the sixteenth century and gives very straightforward advice on how to act to become a successful and powerful political being. Machiavelli´s creation and insights in the reality of politics have be much discredited and condemned in its lack of moral consideration and violent nature. Still it has been read under the centuries with a fascination and eager to understand the structure of power and how to master it. My purpose with this study is to apply this Machiavellian idea of the capable prince on to the earlier research of the Swedish duke Karl, later on King Karl IX.

"Jag är inte homofob, men rör mig inte och prata inte om det" - En kvalitativ intervjustudie om normkritiskt skolsocialt arbete

This is a qualitative study based on interviews with teachers, social workers and school counselors ? with aim to analyze how norm critical social work is in schools. Gender and sexuality norms are in focus which is analyzed in a intersectional and queer theoretical perspective. The study shows that what is defined as a norm in the society varies both socially, historically and culturally. School is a reflection of its society and therefore also reflects its norms, such as heteronormativity and gender roles.

Via Paris till Irak : en alternativ väg för rekonstruktionen av det postkonfliktuella samhället?

AbstractThis study examines the conclusions made by Roland Paris in his case study of fourteen major post-war reconstruction efforts following the end of the Cold War, and applies them to the current reconstruction process in post-war Iraq. Paris found a common denominator of the fourteen cases ? a belief that a rapid liberalization process, turning war-torn states into liberal market democracies, would foster sustainable peace. Paris calls this belief ?Wilsonianism? after Woodrow Wilson, who was one of the first advocates of it.

ABL:s utvidgade värdeöverföringsregler då ett aktiebolag är komplementär i ett kommanditbolag : Utgångspunkt ur NJA 2014 s. 604

This paper examines the power producing dams along the Ume-river as an integral part of and a result from the urbanization process in Sweden during industrial capitalism. The aim of the paper is to contribute to the knowledge of the urbanization process in Sweden in general and of its traces along the Ume river in the county of Västerbotten in particular. The paper applies the theory of concentrated urbanization and extended urbanization put forward by Neil Brenner and Christian Schmid (2015) and argues that the building of power producing dams along the Ume-river is part of an extended urbanization process. This becomes particularly evident when examining the vast physical structures that is the dams, situated in an otherwise remote and sparsely populated area. These vast physical structures are also very well connected to a nation wide electric grid that has connections to bordering countries as well.

ESDP - att vara eller inte vara -Rationella förklaringar och ledarskapets betydelse för ESDP:s födelse i Köln 1999.

At the EU summit in Cologne in 1999, a consensus was reached concerning the common foreign and security policy within the European Union. It was decided at the summit that the WEU (Western European Union) should be incorporated into the EU - whom would then be given military capability to act autonomously without the necessity of Nato involvement. This essay investigates the factors that made this agreement possible from a rational choice perspective, but also from the perspective of the power and influence on negotiations on behalf of various types of leadership present at the meeting. Many nations at the summit of Cologne where for the creation of a military force in the form of ESDP (European Security and Defence Policy) within the Union, and many where against such a decision. However a consensus was reached and that is what this essay shall try to explain.

Kampen om Din Världsbild - En Diskursanalys av Ekelunddebatten från Sydsvenska Dagbladets Kultursidor

AbstractDue to the success of the Populist Party Sverigedemokraterna in the Swedish election of 2006, the daily paper Sydsvenska Dagbladet published a number of columns written by well-known academics, writers and debaters. Their aim was to address the question of why this happened in the election and what it is in the Swedish society today that brought forward these trends. The first and the last word was given to the writer Fredrik Ekelund, and therefore the debate was named Ekelunddebatten.The debaters are fighting to present their view of the world as the only option when categorizing different societal groups and appointing themselves as group representatives. My aim is to unravel these different conceptions of the world and to do this I use the Dicourse Analysis as a method. I discuss the results with Critical Discourse Theory as a theoretical base and also from the view of the current societal discourses: the working class discourse, the multicultural discourse and the discourse of political correctness.I mainly observe four different conceptions of the world with different posing of problems.

Samhällskritik från gatan : En studie av argumentationen i hiphopmusiken utifrån ideologi

Purpose: Which type of social critique does hiphop music present and is it possible to categorize the critique?Is it possible to categorize the social critique ideologically on the basis of socialism, liberalism and conservatism?Procedure and method: A qualitative text method has been used to see which arguments the songs portray. Two different analyzes has been used. The first one was a theory based on Thomas Denk and Daniel Silanders book: Att studera demokratisering and Arvidssons book: Musik och politik hör ihop and its purpose were to categorise the critique. The second one was based on a book by Reidar Larssons: Politiska ideologier i vår tid.

Hur elever med ickesvensk etnisk bakgrund tolkar två lektioner i skolan : samt ett uttryck av maktförhållande mellan lärare och elever

This paper examines how pupils with a non-Swedish background, in a secondary school in Stockholm?s suburban, Sweden, interpret and absorb the contents of school-room classes. It also examines whether the interpretations are influenced by a power-relation between teacher and pupils. The pupil?s interpretations, including their values and perceptions as regards to the content, are central to our study.Firstly, classes on world conflicts and corporal punishment for children were observed and these observations were the foundation to this study.

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