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738 Uppsatser om Wave Spring - Sida 13 av 50
Kraft och Deformationsmätningar på Snap Load gummi
The power consumption has grown rapidlyin the last decade. Fossil fuels and theneed for alternative energy sources aregreat. Ocean waves are a renewable andsustainable source of energy that hasbeen relatively untapped. At UppsalaUniversity research and development havebeen done for several years. Severaltypes of wave energy converters (WEC)have been created.
Varsågod och spring!En kartläggning av aktivtetsgraden i ämnet Idrott och hälsa
Uppsatsen handlar om aktivitetsgraden på lektioner i ämnet Idrott och hälsa. Syftet med undersökningen var att mäta hur aktiva ett urval elever var under lektioner i ämnet Idrott och hälsa. Mätningarna gjordes med hjälp av stegräknare vid tre tillfällen i tre olika klasser, skolår 1, 5 och 9. Mätningarna kompletterades med observationer vid varje mättillfälle i vardera klass i skolår 1, 5 och 9. Ordinarie lärare som undervisar klasserna i Idrott och hälsa intervjuades.
Jämförande studie av normal ERG-svar hos tre olika hundraser :
The purpose of this study was to compare normal electroretinographies (ERGs) from three different canine breeds in order to evaluate if there were any marked similarities or differences between these breeds as to ERG responses. It is known that healthy dogs from different breeds but also dogs within the same breed but in different age categories may have different appearances of their ERG responses. This may be a problem when evaluating if an ERG is normal or not from a dog within a breed not previously examined. Because of this it is important to obtain normal values for each breed and age group in order to be able to use these for later comparisons of ERGs obtained from individuals affected with various retinal diseases.
In this study we have chosen to examine dogs within the three breeds: Labrador Retriever (LR), English Springer Spaniel (ESS) and Chinese Crested Dog (CCD). All of these breeds may be affected with hereditary retinal diseases such as Progressive Retinal Atrophy (PRA).
It is possible that ERG-responses vary due to a number of different factors.
Revolutionen är en man : Genus, nationalitet och nyhetsvärdering i de svenska mediernas rapportering om den arabiska våren
In this study we examine four Swedish newspapers? visual coverage of the Tunisian and Egyptian uprisings in 2010 and 2011 ? commonly known as the ?Arab Spring Revolution?, the ?Jasmine revolution? and in Sweden also the ?Women?s revolution? ? focusing on three main perspectives: news values and framing, postcolonialism, and gender.By means of a comprehensive content analysis and an in-depth semiotic analysis, the purpose of this study is to investigate how Swedish written media frames the revolution and its initiators and partakers through news photographs, headlines, lead paragraphs and photograph bylines, and to determine whether or not it reproduces earlier trends of media coverage and framing of non-Westerners and non-Western societies.The purpose of the extensive content analysis is to attain data for empirical research of the visual portrayal of the uprisings? first twelve weeks in Sweden?s four largest newspapers Dagens Nyheter, Svenska Dagbladet, Aftonbladet and Expressen. The analysis reveals that episodic framing is regularly used in all four newspapers, and that media demonizes Tunisians and Egyptians by constructing them as a brutal, uncivilized and threatening group which almost exclusively consists of men, and whose members are neither quoted nor named. It also shows that women are symbolically annihilated by media and that the very few women who do occur are gender stereotyped in accordance with established media conventions and postcolonial tradition, with the interesting exception of women being quoted to a larger extent than men. The analysis furthermore confirms the low occurrence of female journalists in Swedish foreign reporting, as well as demonstrates that the gender of the journalists does not influence what types of stories are written or how they are framed.The variable frequencies obtained from the content analysis provide indicators which are subsequently explored in the semiotic analysis of four news photographs.
Borrning och gängning av laxkilar till vågkraftverk med industrirobot
To make wave power more competitive on the market Uppsala University leads projects that examine how to accomplish better efficiency in the production. One of these projects is described in this report and examines whether it is possible to make the production of dovetails more efficient by using an industry robot of type ABB IRB6000 S3 M91. This project is using an already presented working method, from a previous project, which involves that the robot picks up the dovetail and moves against fixed cutting machines where the dovetail will be drilled, threaded and milled. Drilling and threading are the sub operations that will be examined in this project where experiments are made with the presented working method and with equipment from Uppsala University.Experiments show whether it is possible to drill the holes in the dovetail within specifications by using the specific robot and the presented working method. The threading operation is examined theoretically if it is possible to accomplish by using the same working method.
Idéträdgården Lucus : som koncept, arbetsprocess och fenomen
During the autumn of 2007 I attended a course in plantcomposition in Alnarp. The main task during the coursewas to make a proposal for a theme garden that was goingto represent the school at an exhibition in the GardenSociety in Göteborg, during the summer of 2008. Thetheme for the garden was set to ?sustainable development?and we had fully two weeks to work with the proposal.I won the competition and during the spring andsummer of 2008 I developed and realized my idea. Thegarden exhibition was inaugurated the 28th of June andwas open until the 28th of September.
Dynamisk simulering med hjälp av RPS-beräkningar för radiovågors utbredning i urban miljö
Militära insatser i urban miljö kommer troligen att öka alltmer. Detta kräver soldater till fots eftersom dessa lättare kan förflytta sig via och mellan byggnader. Varje deltagande soldat kommer att behöva egen radioutrustning. Då stadsmiljö är ett relativt outforskat område vad gäller militär radiokommunikation är det viktigt att öka förståelsen för radiovågors utbredning i stadsmiljö. Härtill har institutionen för Informationsöverföring på FOI köpt in programmet Radiowave Propagation Simulator (RPS).
Betong - Förvånansvärt lättflytande!
Concrete is a very common construction material. It´s characteristics are strength, durability and formablility. Superplasticizer is a common admixture, which changes the properties of concrete.
Today (spring 2007) there are no certian mathematical methods to calculate the required percentage of this admixture needed to give the necessary set slump flow in the overall concrete recipe.
Concrete batching companies must therefor experiment with different amount of superplasticizer in order to meet the specified slump and strength.
The purpose og this report is to investigate if any mathematical relation can be established between the amount of superplasticizer used and the slump flow achieved.
After carrying out some practical experiments using four different superplasticizers a direct relationship can be establish between the percentage of admixture used and the slump/flowability achieved. Unfortunatly at present due to the numerous variables, the calculation of mathematical formula can not be achieved..
Textlämplighet för dyslektiker? ? En studie av läroböcker som används i engelska A på gymnasiet
Syftet med den här studien är att undersöka textlämpligheten och dyslexianpassning av de texter som förekommer i svenska läroböcker i engelska A på gymnasiet. De läroböcker som undersöks är Master Plan, Straight Forward, RealTime1 och Spring Board 1. För att navigera rätt bland tidigare forskning och lärobokstexterna väljer jag att jobba utefter en frågeställning: 1. Vad kan ses som dyslexianpassning och vad är icke dyslexianpassning i läroböcker som används i engelska A? För att kunna undersöka textlämpligheten och dyslexianpassningen i lärobokstexterna användes två metoder; strukturell textanalys och innehållsanalys/läsbarhetsanalys. Resultatet av dessa analyser är bland annat att läroboken RealTime1 har stora fördelar för elever med dyslexi vad gäller textlämplighet..
Analys av PWM-mönster i Matlab
One of ABB Power Systems´s business areas is HVDC (High Voltage Direct Current) technology. HVDC is used for transmissions for both short and long distances. One of Power Systems?s products is called HVDC Light. HVDC Light is a relatively new technology for power transmission, but have before only been used for motor drives applications.
Gynocide i Antichrist? : eller viljan att kategorisera. En diskursanalys av ?kvinnobilden? i Lars vonTrier´s Antichrist.
The aim with this essay is to penetrate the opinions of how women should be represented on screen. I am using a selection of contributions from the gender debate that Lars von Trier´s movie Antichrist caused in Sweden in spring 2009. The focus of the debate was mainly about the way the female actress was displayed. The provocative thing considered by many was that the female part could be interpreted as evil and in connection with Antichrist. But is that a obvious negative way to present women? In a historical view the discussion have been constantly fluctuated when it comes to the ideas of the correct way to visualize women in the movies which have left us without a true answer to that question.I am interested in investigating what is considered today as the best way to represent women by Swedish debaters.By using Michel Foucault?s term discourse as theory in a text analyse I am trying to look trough their language and see their ideological position..
Beredelsens plats i Svenska kyrkans mässordning
The Church of Sweden sent during the spring 2010 two documents, Teologiskagrundprinciper för arbetet I 2006 års handboksgrupp and Mässans grundordning forconsideration. The documents are parts in the work with writing a new service-book for theChurch of Sweden. After the documents had been sent for consideration by the dioceses therehas been a discussion about the proposal to make the preparation in the service of HolyCommunion facultative. My main question has been to se if there will be any change of theconfession, faith and doctrine in the Church of Sweden if the preparation becomes facultative.I have seen that the service-book is an expression for the confession of the Church of Sweden,therefore there will be no change of the confession of the Church of Sweden, but a change ofits expression.I have seen that there is no consensus in how the dioceses react over what is written in thetwo documents about the forgiveness and the atonement. My conclusion is that it may bydifficult for the Church of Sweden to fix a new service-book without first fix what the Churchof Sweden means with forgiveness and atonement..
Ett framtida stall för kaninproduktion.
This survey was made to investigate the possibility of using an alternative method of fencing inSwedish forestry. The most common way of fencing in Sweden today is made by a two meter highmetal net that is attached to turned impregnated poles. The fencing methods that have beeninvestigated is a fencing system made completely out of wood so called ?German wood fence?.Browsing of game in forest regeneration areas is often a big problem and some kind of protection ofthe plants is often necessary. There is several ways of building fences and the most common way isto use metal nets and impregnated poles, this leads to a problem when the fence has profiled itspurpose.
Bojkonstruktion
The division of Electricity at Uppsala University runs a project called Lysekil project, they have designed a buoy that uses the waves to create electric power from a generator attached to the bottom of the sea.Uppsala University is closely connected with the company Seabased and the university makes use of their facilities in Lysekil. When they designed the buoy issues occurred, the geometric design was flawed, brackets with a short shelf life and it is generally uneconomic.A study visit was done in Lysekil on Seabased facility. With this visit the project started, which is to improve the design of the buoy and the attachment of wires leading to the generator. In this project we have chosen to use a beam system with three beams that are attached to the buoy. Then a wire attached to a plate that sits between the beams will be leading to the generator. Two proposals for construction are created, what distinguishes them are the brackets between the beams and the buoy.From these constructions, the design that is considered most optimal for our project is chosen.All parts of the buoy have been modeled and the drawings are designed in ProEngineer software.The two constructions are compared with each other, but the whole focus is on the second and final structure. The report begins with an introduction describing Lysekil project, and a task description of our project.The project aims to produce an optimal buoy that will be easy to design, materials restrictive with good durability and an economical solution.Wave power true function has been studied, mechanical and finite element analysis of beams, buoy and plate design.This has been presented in this report, where in the various chapters can read more about the processes. Although the relevant facts and information on this project and buoy development is included.
Kvantfysiken och den nya myten? : En studie av Fritjof Capras och Danah Zohars böcker om kvantandlighet
This study is about quantum physics and the role it can play in a religious perspective. I intend to examine how moderna physics may be related and understood as New age and Myths. My material consists of two books in the new age genre: "The Tao of Physics" by Fritjof Capra and "The Quantum Self" by Danah Zohar. My first two question to these books are which 1) religious and 2) scientific content they have. My other questions are too 3) investigate and demonstrate how these books are new age and 4) to exanine how the books can function as myths and adopt mythical features.