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3224 Uppsatser om Power structures - Sida 29 av 215

Dimensionering av bärverk av stål : En jämförelse mellan Eurokod och BKR

The design regulations of Boverket (BKR) have long been the mandatory standard for construction design in Sweden. However from the end of the year 2010, the BKR will be replaced by the European standard Eurocode (EC). The transition to EC has been delayed and it is not until the second of May 2011 that the use of EC will be mandatory. Because EC and BKR differ from each other it is highly interesting to investigate and explain these differences.The purpose of the thesis is to compare the two standards and investigate how they give different results or not for the dimensioning of structures of steel with associated loads. The current project HVC (Pets Science Center) in Uppsala is used as a model for the design of the steel structure used in this study.

Vindkraft för uppvärmning

This final thesis contains three major parts, which all have been time demanding:* Designing and construction of a small wind turbine.* Designing and construction of an electrical system.* Thesis with fundamental facts about wind, wind power and design.The thesis contains basic theory in wind power and the energy systems it can be combined with. Different types of wind turbines, which components they consists of and important issues to consider when designing is also mentioned. In the end of this report the technique of our wind turbine will be presented. In the end you can also read about our experiences during the time of designing and construction..

Simulator för el- och värmeproduktion : påverkan på ekonomi och miljö

In this project a simulator has been developed (in C++) with the purpose of illustrating how changes in environmental regulations, tax levels and other policy measures affect the composition of an energy system. The aim of the project was to investigate how energy companies? investment strategies are affected when changes in economic and environmental conditions occur. A standard scenario has been created based on current Swedish conditions, but the user can create new scenarios and set parameters freely. The user is tasked with building power plants to supply the city/region with district heating and electricity during a pre-set number of years. When the simulation is finished the result is graded in the following categories: economy, environment and quality. To evaluate the simulator three scenarios were created (?early 20th century?, ?reduced environmental control? and ?future?) in addition to the standard scenario and these were compared with each other by examining how a select group of power plants perform under the given conditions.

Styrketräning för truppgymnaster : mer än bara kroppsvikt som belastning?

Syfte och frågeställning: Syftet med denna studie är att undersöka de eventuella fördelar styrketräning med yttre belastning kan ge kvinnliga truppgymnaster på juniornivå. Frågeställningar: Vilken effekt på explosivitet i nedre extremitet har sex veckors powerträning med yttre belastning på truppgymnaster? Skiljer resultaten sig från de som uppnås vid traditionell gymnastisk styrketräning?Metod: Två lag som representerar Sverige-eliten på damsidan i juniorklassen delades in i test- (n=7) och kontrollgrupp (n=8). Testgruppen genomförde under sex veckor ett specialdesignat träningsprogram riktat mot power medan kontrollgruppen genomförde traditionell gymnastisk styrketräning. För- och eftertester genomfördes för att utvärdera effekterna av programmen.

Konstruktion av en autonom vindstation

Construction of an autonomous wind station was a project with the goal of creating a product that could collect wind data from a sensor and then transfer this data to a server wirelessly over the GSM network. The device would be powered by batteries and solar cells and function fully without requiring external power supply. This required that a small computer was constructed and programmed to store and send data at predetermined cycle times and programming of a server that received the sent data. The project also required optimization of power consumption and dimensioning of solar cells and batteries based on this. The construction of this station demanded research both for the selection of hardware and programming software. The computer was based on a microcontroller and a GSM module that sent the data over the 2G network.

Kloster och aristokrati i det medeltida Danmark - En studie i samhällsstrukturer, kön, makt och gåvor

This essay investigates, on the basis of the medieval letters, diplomas, how the medieval monasticism contributed to the maintenance of the Danish society's gender structures. The theoretical starting points for the study are gender and class structures and Marcel Mauss presented gift - giving theory. Finally, a continuous comparison is made with Catharina Andersson's results in her dissertation, in which she examines the social structure in the Swedish medieval society. The primary material in the study is the Danish diplomas. 41 diplomas were found relevant for this study.

Decemberkompromiss eller Januariförlovning? : - en komparativ studie av svensk och finsk avtals- och arbetsmarknadsstruktur, reglering kring kollektivavtal samt reglering kring stridsåtgärder och sympatiåtgärder.

Declining union memberships are a fact in both Sweden and Finland. At the same time, the autonomous labour market parties and the high membership rates are the most significant factors for the two countries compared to Europe and the rest of the world. These two factors have in turn been developed and strengthened since the beginning of the twentieth century. By autonomous labour market parties I refer to the fact that the labour market parties themselves through collective bargaining are agreeing on the labour market conditions, without interference from the government.This paper is therefore taking it's stance in the question of what happens with the autonomous labour market parties when the membership rates are in decline. With this in mind, this paper describes the judicial development, the collective agreement and labour market structures, the legal consequences of collective agreements and the opportunities of industrial and sympathy action in both Sweden and Finland. The two countries' systems of labour law have caught some negative attention, hence two of the most discussed cases of recent years are given some attention as well. The collective judicial conditions are very similar in both Sweden and Finland regarding the labour market main actors' collaboration, the collective agreement structures and legal consequences and the opportunities of industrial and sympathy action.

Identitet i den somaliska diasporan : en intersektionell studie av kvinnors jag och delaktighet i samhället

This work applies intersectionality to five Somali women self-narratives and focuses on their identities and positions in Swedish society, but also their relation to Somali society. Since people constructs in relation to the environment, this work studies the impact of environmental confirmations of their own self. Intersectionality is brought into the social work with an operational attempt, and shows how critics of power and interplay between theories and empirics can provide new knowledge. Intersectionality also demands some alterations of the social constructionists? idea of the ego.

?Det anstår mig inte att göra mig mindre än jag är? - skönhetsidealet och den kvinnliga grotesken i textanalyser av Kerstin Ekmans Grand Final i skojarbranschen, Muriel Barberys Igelkottens elegans och Majgull Axelssons Moderspassion

The purpose of this paper is to make a feminist textual analysis of three female protagonists incontemporary novels in order to demonstrate representations of ?skeva? female bodies, deviantfrom beauty-, slender and age norms. The analysis is based on an intersectional perspective whichdemonstrates the interaction between body, sex, gender, class, sexuality and age. The theoreticalmaterial used are class theories by Bourdieu and Skeggs, performative theories by Butler, theoriesof grotesque realism by Bachtin and the female grotesque by Russo and Lundberg. The charactersall belong to the genre of the female grotesque which manifests a feminist protest and a free zonewithin patriarchal Power structures.

Ny teknik för småskalig kraftvärme : - med fokus på Organisk RankineCykel (ORC)

As a part of the fight against the global warming the energy production needs to be more efficient and redirected towards sustainable options. One alternative is cogeneration, which means that electricity and heat is produced in one plant. The purpose with this survey is to examine if there are any commercial available combined heat and power techniques, based on combustion of solid moist biomass, which are suitable to small-scale applications. The technique must be able to produce between 2 and 10 MW thermal and the heat demand is a Swedish district-heating system. When already published reports had been studied, the Organic Rankine Cycle (ORC) was chosen as the most suitable technique.

En jämförelse mellan en traditionell och en ung bank : -ur ett ledarskapsperspektiv

Date: June 10, 2011Level: Bachelor Thesis in Business Administration, 15 credits.Authors: Erica Halvarsson Caroline Lundberg Moa RydbeckSupervisor: Peter SelegårdTitle: A comparison between a traditional and a new bank ? from a leadership perspectiveProblem: The study focuses how different organizational structures and leadership styles appear in a traditional bank compared to a young bank. The questions we asked ourselves in this study is whether there is any differences?Purpose: The purpose of the study is to from a leadership perspective see if there are any differences between organizational structures, leadership and communication depending on whether it is a traditional or a new bank.Method: In this study, primary and secondary data was used to best obtain comprehensive information, which was analyzed on the basis of a set of question. In order to obtain our raw data, interviews with staff from Swedbank and IKANO bank were conducted.

Uthållig Demokrati med exkludering? En analys av diskursen om strukturell politisk exkludering i Demokratiutredningens slutbetänkande

The purpose of this study is to analyse the discourse on political exclusion in the official report Demokratiutredningen. It has been my ambition to relate the analysis of the report to a critical academic discourse on political exclusion and thereby make visible hidden norms and structures which functions to exclude certain individuals and groups from political participation.My paper point out that the report establishes a strong link between democracy and participation and that it, therefore, makes a strong case for a process of democratic inclusion. Though, in my study I suggest that that there is an unawareness of the importance of norms, hegemonic conceptions and structures and that inclusion, therefore, is unlikely to take place. Furthermore, I criticize the focus on deliberative democracy in the report. With insights offered by Mouffe in her argumentation on the necessity to acknowledge the dimension of antagonism present in all societies I underline that the focus on this democratic model is problematic.My conclusion is that the analysis presented in the report is insufficient if we want to create a democratic system characterized by equality..

Risken för översvämningar vid de svenska kärnkraftverken : en statistisk och historisk extremvärdesanalys

This thesis investigates the overall risks of flooding over the Design Basis Flooding Level (DBFL) at the Swedish nuclear power plants (Oskarshamn, Ringhals and Forsmark), using statistical data and methods, but also considers historical events which might affect the overall risk of flooding at the specified sites.Considering the nuclear accident which happened in Fukushima in conjuction with the earthquake and tsunami which struck eastern Japan on 11 March 2011, operators and licensors of nuclear power plants all over the world conducted reviews and investigations on the overall risks posed to the plants from external events. One important such event is extreme water level.One part of the thesis includes an extreme value analysis (using Generalized Extreme Value distribution and Generalized Pareto distribution) of water level data from SMHI (Sweden's Meteorological and Hydrological Institute) measured at stations close to the Swedish nuclear power plants. The results of the statistical studies indicate that considering the return period used in the thesis (100 000 years), the water levels at the Swedish nuclear power plants are not expected to exceed DBFL.The other part of the thesis consists of a historical study of extreme weather-related events. The results of this study indicate that no historical events seem to have occured which would indicate a higher risk of flooding than the one suggested by the statistical study. .

Minivindkraftverks inverkan på lågspänningsnät

Micro-power wind energy convertors have recently increased in popularity. The reasons for this are among other things the increasing cost of electric energy and enviromental concern.In this thesis the connection of these micro-power wind energy convertors to the utility network is discussed. Electric standards for the connection of small production units is presented. Finally some calculations and measurements of electric quality are also presented. The utility network used in the calculations is part of Halmstad Energi och Miljö network..

Uljabuouda vindkraftpark turbinmodellering och stabilitetsanalys

This master thesis has been performed at Solvina in Gothenburg for Skellefteå Kraftand Vattenfall Eldistribution. The aim of it is to investigate the consequences of theinstallation of a wind power plant on the mountain Uljabuouda in the vicinity ofArjeplog. Especially the impacts on voltage and transient stability are examined.Furthermore, the amount of extra strain on the voltage regulation equipment and theneeds for increased regulation capabilities are looked into.The wind power plant is planned to be built by Skellefteå Kraft and connected to a130 kV grid owned by Vattenfall Eldistribution. The work comprehends the followingmain parts:- Theoretical studies aimed at wind turbines and power system stability issues.- Modelling of the type of wind turbines assumed to be built on Uljabuouda.- Simulations of different operation cases and analysis of the simulation results.The results from the simulations show that, as far as voltage stability and extraworkload on tap-changers are concerned, the wind power plant does not, in anysignificant manner, worsen the present conditions. The problem of overloading theline between Arvidsjaur and Vargfors is also minor.

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