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759 Uppsatser om Structural stability - Sida 33 av 51
Elektromagnetisk och mekanisk design av en 20MW turbogenerator
At the Division of Electricity at UppsalaUniversitythere are ongoing researches, including a research concerning turbo generators.Turbo generators produce a large share of electricity in the world; however they are costly mainly due to the fact that the cooling and ventilation that are needed to eliminate the excess heat from the generators are expensive. Turbo generators work with high efficiency and in this project, the main task is to simulate a generator while taking into account that the generator must be designed against self-oscillation, centrifugal force, exhaustion and heat. The turbo generator must be simulated without being too expensive and complicated.In this project, the dimensions of the turbo generator depend on the efficiency of it, and where the losses are in the generator. Furthermore, the optimum values need to be chosen with the help of the ACE simulation program. The report begins with an introduction describing the project followed by a task description that is dealing with the project.
Bibliotekets roll i integrationspolitiken ett postkolonialt perspektiv
Sweden of today is a so-called multicultural society. In this thesis we wanted to examine how mono, multi- and intercultural issues are expressed in culture-political documents. We also wanted to know how librarians for whom these documents are supposed to be guidelines expressed themselves in these matters. Monoculturalism can be described as a static perspective laid upon culture which emphasises cultural purity. A multicultural society describes a society were the nation consists of many different cultures alongside each other, without a genuinely common core.
Ett alternativt lågtrycksbränslesystem
This report describes how the system may be exposed to oscillations and how this can lead to resonance. Resonance is a phenomenon that occurs when a system is affected by external periodic oscillations with frequencies close to the system's natural frequencies. Structures subjected to resonance can risk great damage and destruction, why resonance is something that is important to take into account when designing structures. Alternative ways to counteract resonance is to supply damping in the system. Damping means that the resonance decreases instead of letting the amplitude increase.The report discusses some examples on constructions that have experienced the effect of resonance.
Standardisering av dragarinstallation
This report describes how the system may be exposed to oscillations and how this can lead to resonance. Resonance is a phenomenon that occurs when a system is affected by external periodic oscillations with frequencies close to the system's natural frequencies. Structures subjected to resonance can risk great damage and destruction, why resonance is something that is important to take into account when designing structures. Alternative ways to counteract resonance is to supply damping in the system. Damping means that the resonance decreases instead of letting the amplitude increase.The report discusses some examples on constructions that have experienced the effect of resonance.
Teoretisk och experimentell utvärdering av Lättelement AB:s takinfästning
Lattelement AB in Ornskoldsvik is one of the leading companies in Sweden in composite elements in walls, floors and roofs in particular. The company supplies elements to buildings located with a wide geographical variation, which means that the products are subjected to very different climate with regard to snow, wind and humidity. This places high demands and requires the elements to withstand large variable loads.The elements are made of lightweight beams with flanges of structural timber and beam webs made of OSB. These are bound together by nogging pieces with the same kind of structure. On top of the beams a nailed and glued plywood is added to absorb compressive forces and on the underside of the element a sheet of steel is added for tensile absorption.These elements are then attached to the building framework in different ways depending on the particular element height, loads and the structual supporting material of the frame work.
Det sociala arbetet inom folkbildningen : en fallstudie i Örebro kommun.
The case study investigates study association representatives? perspectives on the activities of the popular education within the social sector in Örebro and why they are organized. It further investigates the cooperation and dialogue between the study associations and the municipality of Örebro regarding this activity. The study is based on critical realism. A questionnaire survey was conducted among all ten study associations in Örebro, combined with qualitative interviews with representatives from six of the active associations.
Legal restraints when doing Business in Europe? An assessment on Competition Legislation on Vertical Relations in the European Automotive Industry
Purpose: The purpose of the investigation is to give an insight to hot the EU legal environment in the field of vertical relationships influences the competitiveness of the 2nd tier of the automobile industry. Conclusion:It follows that European legislation has succeedded in raising the competitiveness by breaking down the powers of the predominantly more powerful companies that the 2nd tier players do business with and by giving companies sufficient leeway to act. The comment must be made here that serious problems due to a power misbalance might still exist yet are not uncovered. In the course of my research I have found a lack of issues in my subject field. These problems however would have a more structural and economical cause, dealing with these problems would fall outside the boundaries of the competence of European competition legislation.
Dejting, icke-monogami och socialt st?d - En kvalitativ studie om hur det ?r att dejta icke-monogamt i en monogam v?rld
This is a qualitative study based on five semi-structured interviews in Sweden. The aim of the study is to explore what experiences non-monogamous people have of dating and the social support surrounding them. The study investigates what effects norms and normative structures have on non-monogamous dating. This is done through a thematic analysis with queer theory, and the underlying theoretical concepts performativity, heteronormativity, mononormativity, relationship escalator and queer temporalities. To help analyze the social support, we have used Bourdieu's (1986) theory about social capital.
Synen på våldsamma män och orsakerna bakom våldet : En kvalitativ studie om behandlares syn på mäns våld mot kvinnor i nära relationer
This study uses qualitative research consisting of six semi-structural interviews of treatment workers who, in various capacities, have worked with men who use violence against their female partners. The purpose has been to show what the treatment counselor understand to be the reasons behind the men?s violence, what kind of backgrounds and problems they believe these abusers have and, lastly, how they view the male abusers as clients. The empirical data was analyzed through four perspectives and explanatory models derived from the past thirty years of Scandinavian research on the reasons behind men?s violence against women.
En ny teoris framväxt : en studie om teoriutvecklingen inom barndomssociologin
This essay aims to examine how theories within childhood sociology have evolved. The main questions are: Who are the central scientists within the field, what are their objects of study and who are the intended recipients of their work? How can the origin of the theories be described? Which elements are central in the theories and have they changed over time? How can the theories be evaluated based on criteria of valid theories?The study was based on a qualitative literature review. Six scientists' publications were examined, ranging from the time of the theories establishment to present time. In the analysis hermeneutics and theories of scientific development were used to seek explanations.The main results show that the central elements in the theories describe childhood as a social phenomenon and a structural category.
Det Intelligenta Huset : - En studie i hemautomation
Today all buildings contain some form of home automation. It might be heating controlled by athermostat or motion detectors controlling outdoor lighting.This paper,The Intelligent House, deals with the planning of a house in Kiruna, in the north ofSweden and further immerses itself in home automation or intelligent control in single-familyhomes. The house has been entirely planned, from layout to structural design and plumbing.The purpose of the paper has been to investigate the possibilities in home automation in singlefamilyhomes and to choose a suitable home automation system for the house being planned.The system has been designed and the costs and energy savings have been calculated.The system chosen for the house is called KNX and is the largest system for home automation inSweden. It is used to control heating, ventilation, lighting and alarm systems in the house. Is hasbeen found that KNX is very expensive and that the amount of energy, possible to save in thehouse, using the system, is relatively small.
Alternatives for another world?: En kritisk analys av Occupy Wall Street-rörelsens idéer för strukturell förändring
In the wake of the latest financial crisis, a group of individuals launched the Occupy WallStreet movement. It wanted to change the structures that economic and political life arefounded upon. They believe that the established structures are unfair and exploit the majorityof the population. Researchers critisised the movement saying it was ambiguous because itcould not produce any realistic ideas for change, while others thought that was a success forthe movement.Therefore, the aim of this Bachelor Thesis is to examine the different ideas articulatedby the Occupy movement and present them systematically. Through an inductive qualitativetext analysis six different themes are identified regarding how the movement wants to changethe structures in society to make them fair.
Tillägnande av ordförråd hos sent anlända elever i nationella gymnasiekurser
AbstractIt is unclear how L2 students acquire vocabulary ? how is it taught ? or wheather it can even be taught. In an SSL (Swedish as second language) program for young adults the ambition has been to integrate the L2 students? into the national high school (gymnasium) courses as quickly as possible, in order to meet the students? demands for subject education and to challenge them on an appropriate knowledge level. Teachers noticed quite early that the course ? integrated L2 students seemed to have a deeper understanding of words and an easier flow in their speech.
Konstruktion av instrument för dragprov på nervceller
This report describes how the system may be exposed to oscillations and how this can lead to resonance. Resonance is a phenomenon that occurs when a system is affected by external periodic oscillations with frequencies close to the system's natural frequencies. Structures subjected to resonance can risk great damage and destruction, why resonance is something that is important to take into account when designing structures. Alternative ways to counteract resonance is to supply damping in the system. Damping means that the resonance decreases instead of letting the amplitude increase.The report discusses some examples on constructions that have experienced the effect of resonance.
Tidskriftsrummet och integration: en kvalitativ undersökning av tidningsläsandet hos några individer av första generationens invandrare
The purpose of this master?s thesis is to find out in which ways a group of first generation immigrants use Swedish papers and magazines in a public library and which information needs this group has about Swedish society. One important aspect in this essay is integration of immigrants in the Swedish society as a possible effect of newspaper reading. The method used in this study is qualitative. Data is generated through semi-structured interviews.