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3986 Uppsatser om Power resources - Sida 24 av 266
Kalibrering av en transient GT-Power modell av en SI PFI turbo motor
I detta arbete behandlas transient simulering i ett 1D-simuleringsprogram, i dettafall Gamma technologies GT-Power. Vad som behöver ändras i en modell för attden skall kunna simulera en motor under transienta driftsfall med godnoggrannhet har undersökts. När detta är gjort, skall det undersökas hur väl dentransient kalibrerade modellen kan simulera en motor med förändrad rörgeometripå insugs- eller avgassidan, och vad som måste omkalibreras om detta inte ärfallet.Den viktigaste slutsatsen av detta arbete är vikten av att ha en korrekt framtagenkompressormapp i modellen. Den som fanns tillgänglig under arbetet hade baramätdata ned till 70000 rpm. Detta resulterade i en överskattning av massflödet iden lägre regionen i den av GT-Power framställda kompressormappen.
Föräldraskap, kön och jämställdhet i Maria Svelands Bitterfittan
The aim of this Masters´ thesis is to examine parenthood, gender and equality. The analysis is based on the novel Bitterfittan. The primary theoretical points of departure are Judith Butler?s theory about doing gender and Yvonne Hirdman?s theory about the gender system, the hierarchical order and the separation of the sexes. I use Lisbeth Bekkengen?s thesis in which the nuclear family is seen as an institution which is upheld by two structures; that is the social relationships man-woman and parent-child, and also by two discourses; on the one hand a notion that fathers and mothers are principally different and on the other hand the child focus.
Representativa testnät försvenska eldistributionsnät
This project was started within the Market-Design programme of Elforsk, with the aim of developing representative test systems of Swedish distribution networks. Using such test systems as a basis for reliability and customer interruption cost calculations makes it feasible to analyse the network tariff regulation of Swedish power istribution companies. In particular, it enables studies of the incentives for companies to invest in system reliability. Until now, the available test systems are either not representative of Swedish conditions, or too small in scale and limited in function.Within this project we have created two test systems. In order to represent the diversity of actual Swedish distribution networks, we have created one test system for urban environments and another for rural environments.
Migration losses of Atlantic salmon (Salmo salar L.) smolts at a hydropower station area in River Åbyälven, Northern Sweden : passage fates at a reservoir, a power house and a bypass structure
A large number of rivers in northern Sweden have hydropower developments that cause negative effects on both up- and downstream migrations of anadromous species like Atlantic salmon. So far, most attention has focused on the hindrances of adult fish during their upstream spawning migration. However, since turbines in power stations cause losses on downstream passing fish, the focus on negative effects on smolts has increased. The aim of this study was to compare three different causes of losses of salmon smolts passing downstream through a power station area in the flow-controlled River Åbyälven in northern Sweden.A total of 61 wild salmon smolts were caught and radio-tagged in the River Åbyälven during their downstream migration in June 2009. The salmon smolts were released at three locations, 1.1 km upstream from the power station, in the turbine intake and in the upper part of a fishway, acting both for up- and downstream fish passage.
Vilka faktorer påverkar börsbolagens nedskrivningsbeslut?
By using univariate analysis, tobit and logit regressions, this thesis investigates determinants of asset writedowns. After controlling for variables indicating reductions in asset values, the results show that changes in senior management are significant in explaining the writedown decision and magnitude, which is in line with previous research. The explanatory power of changes in senior management has not increased with the transition to IFRS in 2005. No evidence is found supporting the hypothesis that the explanatory power of management incentives is higher for more discretionary types of asset writedowns..
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..
Inkludering - Utopi eller verklighet?
The aim of this paper is to shed some light on to what extent the process of making reality of Inclusion, as stated in International Declarations and in Government policies, has reached the actual educational activities in the school system. My chosen method is a case study, in which I have combined a survey with interviews in order to retrieve enough data for my analysis. I have also studied a number of policy documents and relevant literature. My analysis concludes, for the school that I have chosen to study, that there is still a lot to be done before inclusion becomes a reality. There are many obstacles to overcome, for instance; a constant struggle to obtain enough resources and to reach relevant levels of competence within the personnel.
Vem säger ni att jag är? : Kristologiska titlar i de synoptiska evangelierna
Prisons are for many an unknown world, and few know about the prison culture which includes unwritten rules, power structures, interactions and relationships between inmates and correctional employees.While many think that Swedish prisons are too comfortable,inmates are facing extreme stress due to surveillance and detention, by depriving inmates their possibility to shape their own lives. When the inmates is deprived of control over their own life?s the penal system have great power to shape and to influence the inmates.The purpose of this paper is to investigate prisoners' experiences of treatment and exercise of power in prisons. Starting point is to examine what are the kinds of relationships between prison officers and inmates from a power perspective, if there is any difference between the closed and open prisons and how the inmates affected by the structures that exist.Based on my overall purpose, and with my informant´s stories which revealed a number of similar points, four main headings were developed; Mass media and society´s view, and unknown world, interaction between inmates and prison officers and consequences.Prison officers with the role as a contact persons as well and other staff which work close to the inmates play a significant role by supporting through motivational interviewing and can help the inmates to gain insight about their life situation and actions. My informant?s underlined that a good contact person can either help or discourage.Inmates who contributed with their experiences express that there is a big difference between open-and closed prisons.
En bortglömd guldålder? ? Tillgängliggörande av tidig svensk film till en bredare publik
Early Swedish films from the 1910?s and 1920?s are not only an important part of Sweden?s cultural heritage, but also an important part of the international film heritage. This period is often refereed to as the golden age of Swedish film history. Despite this fact, the possibility to watch Swedish films from this period is very small and the main purpose of this thesis is to examine why the availability of these films has such low priority in the Swedish film policy and at the Swedish Film Institute. With the use of policy analysis, I study governmental policies and policies from the Swedish Film Institute for early Swedish films and seek to identify the policy problem and its different parts.
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.
Internrevision i statliga myndigheter : Vad bidrar den till?
The aim of this study is to examine the opinion of teachers as to the situation of young people suffering from Aspergers syndrome in the Sixth Form(gymnasium. In order to find this out I have chosen to interview four teachers with work experience of Aspergers in three different gymnasium in middle Sweden. They were confronted with the following questions: What resources are available for these pupils in the gymnasium? How do they experience that the school situation functions and how would they as teachers like the school situation to function for these young people at school?The result shows that special teachers have an extremely important function to fulfil. Those interviewed felt that there are sufficient resources available, for example guidance and further education for techers as well as both support and means for helping the young people.However, every teacher does not understand this handicap.
De äldres situation i det digitala samhället : Bibliotekets verksamhet för digital delaktighet
This thesis deal with how seniors treat and view the digital world, what their information seeking process looks like and what they perceive as the major obstacles regarding the usage of IKT and the Internet. The experience of the seniors is put in relation to how Uppsala City Library is carrying out the task to increase digital participa-tion. This operation is part of the Digidel network which during the preceding year concluded their campaign Digidel2013 which aimed to render 500 000 new users digitally participant. Following the campaign Digidel published a report on how to further work to increase the digital participation derived from the experience gath-ered from Digidel2013. This report is discussed and put in relation to the proposed measures of Jan A.G.M.
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.