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352 Uppsatser om Formation of cracks - Sida 7 av 24

Detektering av sprickor i vägytor med hjälp av Datorseende

This thesis describes new methods for automatic crack detection in pavements. Cracks in pavements can be used as an early indication for the need of reparation.Automatic crack detection is preferable compared to manual inventory; the repeatability can be better, the inventory can be done at a higher speed and can be done without interruption of the traffic.The automatic and semi-automatic crack detection systems that exist today use Image Analysis methods. There are today powerful methods available in the area of Computer Vision. These methods work in higher dimensions with greater complexity and generate measures of local signal properties, while Image Analyses methods for crack detection use morphological operations on binary images.Methods for digitalizing video data on VHS-cassettes and stitching images from nearby frames have been developed.Four methods for crack detection have been evaluated, and two of them have been used to form a crack detection and classification program implemented in the calculation program Matlab.One image set was used during the implementation and another image set was used for validation. The crack detection system did perform correct detection on 99.2 percent when analysing the images which were used during implementation.

Sex on the table. The formation of a wide-ranging sex education

There is a settled stereotype for women and men which give them different possibilities in our society. The schools, which are one of the most important sources of knowledge, have a great possibility to influence. This is the reason why we are interested in how the schools are working with a project, which we will call X henceforth. What was the purpose with the project and what does it contain? What is missing in the former education, since the project was started? Are there any obstacles or prerequisite in the design of the project or in the school teaching on the basis of X? We have done interviews in the gathering of empirical material to find out all the answers to our questions.

Temperatursprickskatalogen : Hjälpmedel vid beräkning av temperatursprickor i vanligt förekommande  betongkonstruktioner.

Rapporten innehåller inledningsvis en faktadel med allmän information kring temperatursprickor i betong. Här presenteras bl a uppkomsten av fenomenet, vilka typer av sprickor som förekommer och vad ett tvång är. Tanken är att ge läsaren tillräcklig kunskap för att kunna förstå sig på de övriga delarna i rapporten.Resultatet och det huvudsakliga arbetet redovisas i form av tabeller med tillhörande illustrationer där det går att utläsa vilken sprickrisk som förekommer vid flera specifika fall och vilken åtgärd som bör vidtas för att eliminera sprickrisken. Som konstruktör kan du med din egen indata, dvs. dimensioner och temperaturer, följa tabellen och finna resultatet för ditt specifika fall.

Comparative analysis of Thermal Barrier Coatings produced using Suspension and Solution Precursor Feedstock

The research work performed in this thesis has been carried out at the Production Tech-nology Centre where the Thermal Spray research group of University West has its work-shop and labs.This research work has been performed in collaboration with the International Advanced Research Centre for Powder Metallurgy and New Materials (ARCI), Hyderabad, India.First of all, I would like to express my sincere thanks and gratitude to my supervisors Dr. Nicolaie Markocsan and Dr. Nicholas Curry for their guidance, great support and valuable suggestions without which this work could not have been possible. I would also like to thanks Prof. Per Nylén for keeping faith in me and providing me an opportunity to work at PTC, which is a great place to perform research.

När Imperiet Skakade : En postkolonial diskursanalys på The Sydney Morning Herald under åren 1947-1950 i relation till Indiens självständighet

This paper aims to demonstrate how the imperial attitude of the British Empire not onlycirculated within the British Isles, but also to and within the colonies, namely Australiain this case. It also shows how the discourse in an australian newspaper, The SydneyMorning Herald, might affect the people reading it and how thoughts about "the other"is reproduced in the media. The years 1947-1950 has been chosen because those werethe years of the Dominion of India, when India first became independent from theBritish Empire, to the formation of the Republic of India in 1950.All this is done by using postcolonial theory and discourse analytic method hand inhand to de-veil the structures of Empire within the media..

Makt, kriminalitet och spelet om normalitetens gränser. Ur Foucaults perspektiv.

Power, Criminality and the gamble about bordering normality. From theperspective of Foucault. This study is about how criminality becomes a strategy of power used by the individual to overcome difficulties and gain advantages. This strategy of power sets loose a process of identity formation within the individual that gives shape to his own norms which are opposite to the one of the society. The individual norms and the normative society cooperate with one another in a cultural teamwork.

"Ecclesiola in Ecclesia" : Missionssällskapet Bibeltrogna Vänner och kyrkofrågan mellan åren 1911-1986

This essay examines the Swedish missionary association Bible Faithful Friends? (Bibeltrogna Vänner, BV) ecclesiological development between the years 1911 ? 1986 and their relation to the Church of Sweden. This essay?s three main questions are:- How did the ecclesiology of BV develop during the years 1911 ? 1986, with certain focus on 1967-1986?- In what way was this ecclesiology imprinted bya) the structure of the missionary association?b) and the ecclesiological standpoint of the leader Axel B. Svensson?As regards the first question, the study shows that BV's ecclesiology, particularly in the years 1967 ? 1986, is characterized by a church debate between BV's board and the promoters and founders of the Lutheran Confessional Church (Lutherska Bekännelsekyrkan, LBK).

Barnlösa homosexuellas syn på familjebildning och föräldraskap

The purpose of this essay was to examine how childless homosexuals (men and women) were looking at family formation and parenthood. The essential questions were how the homosexuals felt about their own parenthood in the future and about different family constellations. We also wanted to examine how they experienced reactions from the society and what they thought about the current Swedish laws in force of adoption and insemination.We have chosen to work with a qualitative method and interviewed nine childless homosexual men and women in the age between 21 - 39 years to get some answers about the questions above.The main result from the interviews was that the homosexuals had the same thoughts like any other future parent but with a more complicated engagement. Even though they some times felt a resistance in the society against homosexual parenthood it was not a thing that would stop them from getting children..

Quadrotor UAV : Konstruktion och användbarhetsstudie av en UAV i sensornätverk

Quadrotor UAVs are self-stabilizing, autonomous flying machines that has recently become more popular than ever. Unmanned Aerial Vehicles have their roots in the military, where they were developed for use in reconnaissance and combat. During the last few years, advances in the fields of electronic sensors, electric motors and microcontrollers have enabled smaller designs and autonomic flight control even for private use. The quadrotor, which is the particular kind of UAV we are looking closer at in this paper, has 4 rotors in an X-like formation. This configuration has many advantages such as good lift capacity, non-complex mechanical structure and serviceability.In this project we aquired a current overview of the domain and determine whether it is possible to construct a quadrotor UAV designed for use in a WISENET sensor network on a low budget and short time schedule.Based on existing community project AeroQuad, a quadrotor is constructed with a budget of about 500 euro.

Numeriska simuleringar av betongkonstruktioner med minimiarmering för sprickbreddsbegränsning

Efter introduktionen av Eurokoderna har mängden minimiarmering i betongkonstruktioner ökat. Denna ökning beror på skillnader i metoderna som nu används för att beräkna mängden minimiarmering i olika typer av betongkonstruktioner och de som användes tidigare då BKR var den gällande normen. Minimiarmering används i betongkonstruktioner för att omfördela tvångsdeformationer. I detta arbete undersöks om mängden minimiarmering kan minskas utan att dess huvudsakliga funktion går förlorad. I arbetet har ett antal metoder för att beräkna minimiarmering jämförts för att se hur stora skillnaderna i armeringsmängd blir, varför dessa uppkommer och vilka för- och nackdelar som finns med metoderna.

Fallet Linné : Påverkan av motivation och arbetsglädje i anslutning till organisationsförändringar

This empirical study aims to determine whether Linnaeus University's formation in 2010 and subsequent reorganization has affected the employees' perceived motivation and job satisfaction.A combined approach was used in which both quantitative and qualitative questions were asked in the survey form. 101 survey responses is the basis for the analysis and these have been associated with SDT-theory in order to draw further conclusions.The study shows that among the respondents, there is a frustration that is possibly related to the two organizational changes. They feel that they have lost confidence in management as a result of not being part of decision making. The study also conveys a very fragmented picture, members of the organization perceive that they have very different possibilities to peform well, participate and have clear goals to work towards..

Måste det vara så grönt? Ett visuellt Förpackningskoncept för ett ekologiskt livsmedelsmärke

»Does it have to be so green?« is a visual communication project focused on packaging design. I attempted to challenge the clichés of graphic design for organic products and designed a packaging concept for a fictional food brand. The project had a special objec¬tive which was to explore ways to use the package as carrier for in¬formation about the enviromental impact of the packaging itself.The process included research about packaging design and its ef¬fect on the consumer, an investigation of the Swedish market for organic foods, creating and defining a brand, and designing a cohe¬rent packaging concept for a product line which communicates the brand?s values and appeals to the intended target group.The project resulted in prototypes for a muesli package, tea car¬ton and honey jar, as well as a manual that explains the application of the graphic program..

"Varf?r ska vi betala??: En studie om r?tten till bostad i Sverige och kvinnors upplevelser av sina bost?der, omr?det och renoveringar i L?vg?rdet.

The purpose of this study is to investigate how the process and result of renovations in socioeconomic vulnerable areas affect the residents' right to housing; with a focus on women's experiences of their homes, their area, the housing company's apartment renovations. The study is conducted through two research questions: How do the women in L?vg?rdet experience their homes and the area? And how do the women in L?vg?rdet experience the process and the result of the renovations of the rental apartments? The methodology used is qualitative research interviews. The empirical material was gathered through qualitative interviews. Eight women living in L?vg?rdet have been interviewed.

En studie av sociala faktorer : Som kan medföra problem vid implementering av informationssystem

Quadrotor UAVs are self-stabilizing, autonomous flying machines that has recently become more popular than ever. Unmanned Aerial Vehicles have their roots in the military, where they were developed for use in reconnaissance and combat. During the last few years, advances in the fields of electronic sensors, electric motors and microcontrollers have enabled smaller designs and autonomic flight control even for private use. The quadrotor, which is the particular kind of UAV we are looking closer at in this paper, has 4 rotors in an X-like formation. This configuration has many advantages such as good lift capacity, non-complex mechanical structure and serviceability.In this project we aquired a current overview of the domain and determine whether it is possible to construct a quadrotor UAV designed for use in a WISENET sensor network on a low budget and short time schedule.Based on existing community project AeroQuad, a quadrotor is constructed with a budget of about 500 euro.

Lekens betydelse för barns utveckling : En studie om hur skolgårdsmiljöns utformning påverkar barns leklust

The purpose of this study is to illustrate the impact on children's development around playing and how significance the formation of the schoolyards is focusing on how it inspire and calls to play within the children's. The study will also show how the youth workers experience the schoolyards and how they can incorporate the playground in their work to inspire the children's play and activities. The methods used in this study is based on both real conversations and by mail with educated youth workers and observations. The results shows that the schoolyard environment is very important for the children's play and development. The study reveals the importance of having nature like forest nearby and that the environment should be suited for everyone.

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