Is it possible to cover an issue as a journalist to the extent that you are practically a human rights activist, and still contribute to its continuation by unconsciously upholding the values causing the issue? This study asks the question if journalists help or hinder the elimination of female genital mutilation (FGM), and puts forth the thesis that journalists as a collective in fact are affecting the development more negatively through their attitudes than positively through their actions. The study consists of a theoretical analysis connecting to patriarchy and post-colonialism, and a field study from Tanzania where journalists are interviewed. The theoretical results show a clear connection between patriarchal values and FGM, and that if a journalist upholds these values she will not be as inclined to see the victim of FGM as a subaltern, she will be more likely to generalize the groups status and characteristics and she will be caught in between traditional and modern values. If a journalist ascribes to more traditional values when it comes to the difference between the genders, her attitudes will to some extent be counterproductive to the work she does when she covers FGM with the intention to prevent it. The field study supports this by showing that awareness about gender inequality and FGM does not necessarily mean awareness of patriarchal structures and how they affect men, women and traditions. One journalist can make a significant difference, but if she is a part of a journalist collective with strong, patriarchal values her efforts might not be sufficient to help in changing the overall development of FGM.

What topics are discussed within the female genital mutilation debate? And who gets to speak out? Are there any prominent patterns able to detect? This thesis tries to elaborate these thoughts examining the journalistic coverage of FGM in Swedish newspapers during the year of 2016. A content analysis of all published newspapers during the year of interest sets the empirical basis, and is supported by interviews with journalists covering the issue. The dissertation holds a constructionist approach meaning that the perception of reality is constructed, and thereof differs. This approach also clarifies that there is no constant truth, but several. Findings within the empirical data are mainly discussed connected to feminist theory as well as the concept of agenda-setting, eventually involving discussions about human rights issue as a value for journalism. What is clear here is that women are overrepresented within the debate, and are depicted as strong individuals, are seldom victimized or depicted in stereotyped gender roles as opposed by scholars. Meanwhile, participating journalists are somewhat semi-aware about their own portrayals since they opine that they are focusing on representing female characters in their articles. This might indicate that the FGM debate is unilaterally represented in some ways. The result also shows a clear pattern in representing FGM in media as a global issue treating the prevalence of FGM around the world, even when a domestic perspective is used. The issue of interest is also perceived as a procedure aiming to control women and/or their sexuality in a quite vast extent, scholarly as well as empirically

La teoría de vigas de Timoshenko TBT y una teoría de alto orden IFSDT son formuladas utilizando las ecuaciones constitutivas no locales de Eringen. Se utilizaron ecuaciones constitutivas en 3D en el modelo IFSDT. Se utilizó una variación del material con el uso de materiales funcionalmente graduados a lo largo del peralte de una viga de sección rectangular. El principio de trabajos virtuales utilizado y ejemplos numéricos fueron presentados para comparar ambas teorías de vigas. / Timoshenko Beam Theory (TBT) and an Improved First Shear Deformation Theory (IFSDT) are reformulated using Eringen’s non-local constitutive equations. The use of 3D constitutive equation is presented in IFSDT. A material variation is made by the introduction of FGM power law in the elasticity modulus through the height of a rectangular section beam. The virtual work statement and numerical results are presented in order to compare both beam theories. / Tesis

O interesse em materiais com gradiente funcional (MGF) tem crescido nos últimos anos devido à possibilidade de se obter peças com variação de propriedades ao longo de uma ou mais dimensões, gerando desempenho ótimo dependendo da solicitação imposta ao material. Por outro lado, a sinterização em dois estágios, consiste em aquecer a peça conformada até que esta apresente densidade relativa entre 75% e 92% da densidade teórica, e, em seguida, submetê-la a um resfriamento rápido até uma temperatura inferior, onde deve permanecer por um período até o fim da densificação. Desta maneira, é possível obter peças densas, com tamanho médio de grãos inferior ao obtido via sinterização convencional, melhorando suas propriedades mecânicas. Neste trabalho, foram caracterizados, por dilatometria, compósitos alumina-zircônia parcialmente estabilizada com ítria (3Y-ZrO2), com teor de ZrO2 variando de 0 a 30% massa/massa. Após compatibilização do comportamento destes compósitos durante a sinterização e determinação da temperatura de pico do processo de sinterização em dois estágios (TSS), foram montadas peças com gradiente de composição. Estas peças foram sinterizadas em dois estágios, com temperatura de pico de 1450°C e temperatura de patamar de 1350°C por 8 horas. A microestrutura foi avaliada com o uso de microscópio eletrônico de varredura e realizou-se a caracterização mecânica por ensaios de dureza, tenacidade à indentação, a fim de se fazer um estudo comparativo dos resultados obtidos para as peças sinterizadas em dois estágios com os das peças com gradiente funcional densificadas via sinterização convencional a 1500°C. A co-prensagem, seguida da técnica de sinterização em dois estágios utilizada para obtenção de peças com gradiente funcional, foi eficiente em produzir peças com densidade aparente relativa de 98,1% DT, valores de tenacidade a indentação variando entre 4,3 MPa.m1/2 a 9,8 MPa.m1/2 e valores de dureza entre 17,5 GPa a 18,4 GPa. / The interest for functionally graded materials (FGM) has grown up during last 2 decades owing to the possibility of developing pieces and devices with a gradual properties variation along one or more dimensions, which allows an optimum performance as a function of imposed solicitation. On the other hand, two stage sintering is a relative new sintering technique, where the shaped pieces are heated up to a relative density of 75-92% t.d., followed by a fast cooling step, up to an inferior temperature, where the piece in maintained up to the end of dense structures, whit finer microstructures, responsible for better mechanical properties. In this work, we characterized alumina-ytria-stabilized zirconia composites, with different amounts of 3Y-ZrO2, by dilatometry. After fitting thermal behavior of the distinct composites during sintering and determining temperature of maximum densification rate, co-pressed FGMs were constructed. Then pieces were sintered by pressureless traditional technique and two stage sintering, with a peak temperature of 1450°C and soaking temperature of 1350°C x 8 hours. Microstructure was studied by SEM and mechanical properties: microhardness and indentation toughness, in order to compare pressureless sintered FGMs at 1500°C and two stage sintered FGMs.

O objetivo desta tese é o estudo de formação de fuligem em chamas laminares de difusão. Para o modelo de formação de fuligem é escolhido um modelo semi-empírico de duas equações para prever a fração mássica de fuligem e o número de partículas de fuligem. O modelo descreve os processos de nucleação, de crescimento superficial e de oxidação das partículas. Para o modelo de radiação, a perda de calor por radiação térmica (gás e fuligem) é modelada considerando o modelo de gás cinza no limite de chama opticamente fina (OTA - Optically Thin Approximation). São avaliados diferentes modelos de cálculo das propriedades de transporte (detalhado e simplificado). Em relação à cinética química, tanto modelos detalhados quanto reduzidos são utilizados. No presente estudo, é explorada a técnica automática de redução conhecida como Flamelet Generated Manifold (FGM), sendo que esta técnica é capaz de resolver cinética química detalhada com tempos computacionais reduzidos. Para verificar o modelo de formação de fuligem foram realizados uma variedade de experimentos numéricos, desde chamas laminares unidimensionais adiabáticas de etileno em configuração tipo jatos opostos (counterflow) até chamas laminares bidimensionais com perda de calor de etileno em configuração tipo jato (coflow). Para testar a limitação do modelo os acoplamentos de massa e energia entre a fase sólida e a fase gasosa são investigados e quantificados para as chamas contra-corrente Os resultados mostraram que os termos de radiação da fase gasosa e sólida são os termos de maior importancia para as chamas estudas. Os termos de acoplamento adicionais (massa e propriedade termodinâmicas) são geralmente termos de efeitos de segunda ordem, mas a importância destes termos aumenta conforme a quantidade de fuligem aumenta. Como uma recomendação geral o acoplamento com todos os termos deve ser levado em conta somente quando a fração mássica de fuligem, YS, for igual ou superior a 0.008. Na sequência a formação de fuligem foi estudada em chamas bi-dimensionais de etileno em configuração jato laminar usando cinética química detalhada e explorando os efeitos de diferentes modelos de cálculo de propriedades de transporte. Foi encontrado novamente que os termos de radiação da fase gasosa e sólida são os termos de maior importância e uma primeira aproximação para resolver a chama bidimensional de jato laminar de etileno pode ser feita usando o modelo de transporte simplificado. Finalmente, o modelo de fuligem é implementado com a técnica de redução FGM e diferentes formas de armazenar as informações sobre o modelo de fuligem nas tabelas termoquímicas (manifold) são testadas A melhor opção testada neste trabalho é a de resolver todos os flamelets com as fases sólida e gasosa acopladas e armazenar as taxas de reação da fuligem por área de partícula no manifold. Nas simulações bidimensionais estas taxas são então recuperadas para resolver as equações adicionais de formação de fuligem. Os resultados mostraram uma boa concordância qualitativa entre as predições do FGM e da solução detalhada, mas a grande quantidade de fuligem no sistema ainda introduz alguns desafios para a obtenção de bons resultados quantitativos. Entretanto, este trabalho demonstrou o grande potencial do método FGM em predizer a formação de fuligem em chamas multidimensionais de difusão de etileno em tempos computacionais reduzidos. / The objective of this thesis is to study soot formation in laminar diffusion flames. For soot modeling, a semi-empirical two equation model is chosen for predicting soot mass fraction and number density. The model describes particle nucleation, surface growth and oxidation. For flame radiation, the radiant heat losses (gas and soot) is modelled by using the grey-gas approximation with Optically Thin Approximation (OTA). Different transport models (detailed or simplified) are evaluated. For the chemical kinetics, detailed and reduced approaches are employed. In the present work, the automatic reduction technique known as Flamelet Generated Manifold (FGM) is being explored. This reduction technique is able to deal with detailed kinetic mechanisms with reduced computational times. To assess the soot formation a variety of numerical experiments were done, from one-dimensional ethylene counterflow adiabatic flames to two-dimensional coflow ethylene flames with heat loss. In order to assess modeling limitations the mass and energy coupling between soot solid particles and gas-phase species are investigated and quantified for counterflow flames. It is found that the gas and soot radiation terms are of primary importance for flame simulations. The additional coupling terms (mass and thermodynamic properties) are generally a second order effect, but their importance increase as the soot amount increases As a general recommendation the full coupling should be taken into account only when the soot mass fraction, YS, is equal to or larger than 0.008. Then the simulation of soot is applied to two-dimensional ethylene co-flow flames with detailed chemical kinetics and explores the effect of different transport models on soot predictions. It is found that the gas and soot radiation terms are also of primary importance for flame simulations and that a first attempt to solve the two-dimensional ethylene co-flow flame can be done using a simplified transport model. Finally an implementation of the soot model with the FGM reduction technique is done and different forms for storing soot information in the manifold is explored. The best option tested in this work is to solve all flamelets with soot and gas-phase species in a coupled manner, and to store the soot rates in terms of specific surface area in the manifold. In the two-dimensional simulations, these soot rates are then retrieved to solve the additional equations for soot modeling. The results showed a good qualitative agreement between FGM solution and the detailed solution, but the high amount of soot in the system still imposes some challenges to obtain good quantitative results. Nevertheless, it was demonstrated the great potential of the method for predicting soot formation in multidimensional ethylene diffusion flames with reduced computational time.

<p>Kvinnlig könsstympning uppmärksammades i västvärlden på 1970-talet då invandringen till väst från länder där könsstympning praktiseras ökade. När Waris Dirie gav ut sin självbiografiska bok En blomma i Afrikas öken 1999 kom könsstympning åter på tapeten. Eftersom könsstympning är en sedvänja som praktiserats i tusentals år världen över och fortfarande utövas i flera länder idag, väcktes ett intresse att ta reda på omständigheterna kring fenomenet. Vart, hur och varför uppstod denna till synes inhumana och irrationella sedvänja och hur kommer det sig att den lever kvar än idag? Vilka bakomliggande faktorer finns? Hur hänger könsstympning ihop med religion, kultur, genus, makt och så vidare?</p><p>Eftersom det verkade handla om ett mycket komplext fenomen togs beslutet att syftet skulle vara ganska brett och omfattande. Hypotesen var att könsstympning kunde förklaras och förstås som ett socialt fenomen och detta är det som undersöks, analyseras och framhålls genom denna uppsats. De sociologiska teorier som använts faller inom ramarna för socialpsykologi och som komplement till dessa teorier har även interkulturella perspektiv och genus- och etnicitetsperspektiv använts.</p><p>Metoden är kvalitativ datainsamling. Ett stort urval böcker, artiklar och internetkällor har använts. Dataanalysen har skett parallellt och integrerat med datainsamlingen. Centrala begrepp och teoretiska utgångspunkter har sedan kopplats samman med fenomenet könsstympning i analysen. Slutligen hålls en avslutande diskussion där personliga reflektioner och slutsatser diskuteras.</p><p>Resultatet visar på många olika möjliga sociologiska, interkulturella och genus- och etnicitetsrelaterade förklaringsmodeller av hur könsstympning kan förklaras och förstås som ett socialt fenomen. Det har även visat sig vara intressant att dra paralleller mellan den könsstympade kvinnan och den ”jämställda” västerländska kvinnan. Det finns ingen enkel förklaring till varför sedvänjan existerar än idag, det är många olika aspekter och faktorer som spelar in. Vad som är viktigt är att man förhåller sig till fenomenet med viss kulturell relativism och att man beaktar sedvänjans komplexa och multidimensionella natur.</p> / <p>Female genital mutilation (FGM) attracted much attention in the west in the 1970’s, when the immigration to the west from countries where FGM was practiced increased. When Waris Dirie published her autobiography Desert flower: the extraordinary journey of a desert nomad in 1999, the phenomenon got on the carpet again. Since FGM is a custom that has been practiced for thousands of years all over the world and is still beeing practiced in a number of countries today, an interest was awakened for examining the circumstances surrounding the phenomenon. Where, how and why did this apparently inhumane and irrational custom arise and how come it still exists today? What is at the bottom of it? How is FGM related to religion, culture, gender, power and so on?</p><p>Since it seemed to be about a very complex phenomenon a decision was made to keep the purpose of the essay quite broad and extensive. The hypothesis was that FGM could be explained and understood as a sociological phenomenon and this is what has been examined, analyzed and emphasizwd through out this essay. The sociological theories falls within the framework of social phsychology, and as a compliment to these theories there has also been a use of intercultural perspectives and gender- and ethnicity perspectives.</p><p>The method is qualitative data gathering. A large selection of books, articles and websites have been used. Data analysis has been done throughout and integrated with the data gathering process. In the analysis, theory is related and connected to the pheonomenon FMG. Finally there is a closing discussion in which personal reflections and conclusions are discussed.</p><p>The result shows many different sociological, intercultural and gender- and ethnicity related explanation models of how FGM can be explained and understood as a sociological phenomenon. It has also proved interesting to draw paralleles between the circumcised woman and the “equal” western woman. There is no simple explanation to why the custom is still beeing practiced today, there are many different aspects and factors involved. What is important though, is that you relate to the phenomenon with a certain degree of cultural relativism and that you pay regard to the customs complex and multi dimensional nature.</p>

Kvinnlig könsstympning uppmärksammades i västvärlden på 1970-talet då invandringen till väst från länder där könsstympning praktiseras ökade. När Waris Dirie gav ut sin självbiografiska bok En blomma i Afrikas öken 1999 kom könsstympning åter på tapeten. Eftersom könsstympning är en sedvänja som praktiserats i tusentals år världen över och fortfarande utövas i flera länder idag, väcktes ett intresse att ta reda på omständigheterna kring fenomenet. Vart, hur och varför uppstod denna till synes inhumana och irrationella sedvänja och hur kommer det sig att den lever kvar än idag? Vilka bakomliggande faktorer finns? Hur hänger könsstympning ihop med religion, kultur, genus, makt och så vidare? Eftersom det verkade handla om ett mycket komplext fenomen togs beslutet att syftet skulle vara ganska brett och omfattande. Hypotesen var att könsstympning kunde förklaras och förstås som ett socialt fenomen och detta är det som undersöks, analyseras och framhålls genom denna uppsats. De sociologiska teorier som använts faller inom ramarna för socialpsykologi och som komplement till dessa teorier har även interkulturella perspektiv och genus- och etnicitetsperspektiv använts. Metoden är kvalitativ datainsamling. Ett stort urval böcker, artiklar och internetkällor har använts. Dataanalysen har skett parallellt och integrerat med datainsamlingen. Centrala begrepp och teoretiska utgångspunkter har sedan kopplats samman med fenomenet könsstympning i analysen. Slutligen hålls en avslutande diskussion där personliga reflektioner och slutsatser diskuteras. Resultatet visar på många olika möjliga sociologiska, interkulturella och genus- och etnicitetsrelaterade förklaringsmodeller av hur könsstympning kan förklaras och förstås som ett socialt fenomen. Det har även visat sig vara intressant att dra paralleller mellan den könsstympade kvinnan och den ”jämställda” västerländska kvinnan. Det finns ingen enkel förklaring till varför sedvänjan existerar än idag, det är många olika aspekter och faktorer som spelar in. Vad som är viktigt är att man förhåller sig till fenomenet med viss kulturell relativism och att man beaktar sedvänjans komplexa och multidimensionella natur. / Female genital mutilation (FGM) attracted much attention in the west in the 1970’s, when the immigration to the west from countries where FGM was practiced increased. When Waris Dirie published her autobiography Desert flower: the extraordinary journey of a desert nomad in 1999, the phenomenon got on the carpet again. Since FGM is a custom that has been practiced for thousands of years all over the world and is still beeing practiced in a number of countries today, an interest was awakened for examining the circumstances surrounding the phenomenon. Where, how and why did this apparently inhumane and irrational custom arise and how come it still exists today? What is at the bottom of it? How is FGM related to religion, culture, gender, power and so on? Since it seemed to be about a very complex phenomenon a decision was made to keep the purpose of the essay quite broad and extensive. The hypothesis was that FGM could be explained and understood as a sociological phenomenon and this is what has been examined, analyzed and emphasizwd through out this essay. The sociological theories falls within the framework of social phsychology, and as a compliment to these theories there has also been a use of intercultural perspectives and gender- and ethnicity perspectives. The method is qualitative data gathering. A large selection of books, articles and websites have been used. Data analysis has been done throughout and integrated with the data gathering process. In the analysis, theory is related and connected to the pheonomenon FMG. Finally there is a closing discussion in which personal reflections and conclusions are discussed. The result shows many different sociological, intercultural and gender- and ethnicity related explanation models of how FGM can be explained and understood as a sociological phenomenon. It has also proved interesting to draw paralleles between the circumcised woman and the “equal” western woman. There is no simple explanation to why the custom is still beeing practiced today, there are many different aspects and factors involved. What is important though, is that you relate to the phenomenon with a certain degree of cultural relativism and that you pay regard to the customs complex and multi dimensional nature.

The main objective of this study is to model and analyze a three dimensional inclined semi-elliptic surface crack in a Functionally Graded Material (FGM) coating bonded to a homogeneous substrate with a bond coat. The parametric analyses on FGMs are based upon zirconia-yttria (ZrO2-8wt%-Y2O3) FGM coating bonded to a substrate made of a nickel-based superalloy. It is assumed that there is a nickel-chromium&amp / #8211 / aluminum&amp / #8211 / zirconium (NiCrAlY) bond coat between the FGM coating and substrate. Metal-rich, linear variation, ceramic-rich and homogeneous ceramic FGM coating types are considered in the analyses. The inclined semi-elliptic surface crack problem in the FGM coating-bond coat-substrate system is analyzed under transient thermal loading. This problem is modeled and analyzed by utilizing three dimensional finite elements. Strain singularity around the crack front is simulated using collapsed 20 &amp / #8211 / node quarter &amp / #8211 / point brick elements. Three &amp / #8211 / dimensional displacement correlation technique is utilized to extract the mixed mode stress intensity factors around the crack front for different inclination angles of the semi-elliptic surface crack. The energy release rates around the crack front are also calculated by using the evaluated mixed mode stress intensity factors. The results obtained in this study are the peak values of mixed mode stress intensity factors and energy release rates around the crack front for various inclination angles of the semi-elliptic surface crack embedded in the FGM coating of the composite structure subjected to transient thermal loading.

Functionally graded materials (FGMs) are composites with continuous material property variations. The distinct interfaces between the reinforcement and the matrix in classical composites are potential damage initiation sites. The concept of FGM aims at avoiding the material mismatch at the interfaces. Functionally graded materials originated from the need for a material that has high-toughness at very high operating temperatures that occur in rocket nozzles and aeroplane engines. One of the early applications of graded materials can be thus found in thermal barrier coatings of gas turbine blades. Recent applications of FGMs include optoelectronics, ballistic impact resistance structures, wear resistant coatings and others. Although the manufacturing and applications of FGMs are well developed the basic mechanics of failure is not well understood, which is important in developing engineering design methodologies. Modern day design practice uses the concepts of fracture mechanics and the fracture properties of graded materials is not well understood. Most studies in the literature have assumed that the material response of the bulk functionally graded material to be elastic even though the constituents are nominally ductile. Some asymptotic analysis available in the literature have described the effect of ductility on the fracture parameters. However, these analysis are not complete in the sense that they have some undetermined constants. The present thesis aims at performing whole-field finite element (FE) simulations of a crack embedded in a ductile functionally graded material subjected to an anti-plane shear (mode-3) loading. A J2-deformation theory based power-law hardening nonlinear material response is assumed. The material property variation is assumed to be in the radial-direction (r-FGM), tangential to the crack (x-FGM), normal to the crack plane (y-FGM) and also at an arbitrary angle to the crack-plane (xy-FGM). Yet another power law described the material property variation. The competition between the indices of the hardening and material property variation is understood by performing a parametric analysis by varying both systematically. Our results indicate that the first most singular term of the asymptotic series remains unaffected. For some values of the material property variation index, the second asymptotic term is affected. The semi-closed form solutions available in the literature were unable to decipher the relative range of dominance of the first and second terms. From the present whole-field FEM analysis were able to extract this relative range of dominance. Our results indicate the range of dominance of the first term is least for FGMs when the material property variation is in the direction to the crack (x-FGM), and it is more for y-FGM.

The main objective of this study is to model the three dimensional surface cracking problem in Functionally Graded Material (FGM) coatings bonded to homogeneous substrates. The FGM coating is assumed to be a (ZrO2) &ndash / (Ti-6Al-4V) layer. Homogeneous ceramic, metal &ndash / rich, ceramic &ndash / rich and linear variation material compositions are considered in the analyses. The surface crack is assumed to have a semi &ndash / circular crack front profile. The surface crack problem in the FGM coating &ndash / substrate system is examined under mechanical and transient thermal loading. Structural and thermal problems are modeled using three dimensional finite elements. Strain singularity around the crack front is simulated using collapsed 20 &ndash / node quarter &ndash / point brick elements. Three - dimensional displacement correlation technique is utilized to extract the stress intensity factors. The main results of the study are the stress intensity factors around the crack front for FGM coating - substrate structures subjected to uniform tension, bending, fixed &ndash / grip tension, three point bending and transient thermal loading.