[pt] A presente Tese aborda a fofoca como fenômeno comunicativo, investigando, em específico, seu significado social e cultural no Brasil. A análise teórica concentra-se em três aspectos principais: (1) a dinâmica situacional dos elementos pragmaticamente constitutivos de uma ação caracterizável como fofoca; (2) a recorrência dos conteúdos de mensagens trocadas a tal título e sob outras variantes semânticas e (3) os empregos concretos da fofoca como instrumento na prática social. Uma vez delimitada como fenômeno geral, passo a apreciar a dinâmica específica da fofoca no Brasil. Assim, analiso sua relevância a partir da noção de liminaridade segundo Victor Turner, considerando certos eventos em que a fofoca se manifesta em uma cultura marcada por fortes traços de predomínio da oralidade, fixidez hierárquica e trânsito relacional. / [en] This Thesis addresses gossip as a communicative phenomenon, investigating, specifically, its social and cultural significance in Brazil. The theoretical analysis focuses on three main aspects: (1) the situational dynamics of the pragmatically constitutive elements of an action characterized as gossip; (2) the recurrence of the contents of messages exchanged under this name and under other semantic variants and (3) the concrete uses of gossip as an instrument in social practice. Once defined as a general phenomenon, I begin to appreciate the specific dynamics of gossip in Brazil. Thus, I analyze its relevance based on the notion of liminality according to Victor Turner, considering certain events in which gossip manifests itself in a culture marked by strong oral predominance, hierarchical fixity and relational transit.

Conception of the complicated international question of the poor communities in the context of the Southamerican favelas.Urbanisation / suburbanisation with the accent to the concrete architectonic detail.

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In 2023 a committee directive was published by the Swedish government regarding a review of certain issues in the field of suicide prevention. The study aims to analyze the understanding of suicide as a phenomenon to explore how suicide is constructed through discourse and discuss the ideological consequences for social work. This will hopefully deepen the understanding of the suicide and suicide prevention in a Swedish context. The study adopts a social constructivist approach, and the research design was qualitative with Fairclough’s Critical Discourse Analysis (CDA) paradigm. Research data in the study was two government documents regarding suicide and suicide prevention. The data was analyzed according to Fairclough’s three-dimensional model: through text, through discursive practice and through social practice in a sociocultural context using Foucault’s term power-knowledge. The study discusses the implications of the findings in a wider political and social meaning. The research finds that the competing discourses on suicide in Sweden exists within the structural perspective of understanding the phenomenon, with features of economic-, medical- and individual -discourse and that there is a shift in social politics moving away from the individual and medical/pathologic discourse on suicide. The implications for social work are concluded to be future suicide preventive interventions designed for social services, and furthermore a broader take on individuals with suicidal thoughts and tendencies.

”vivid and fiery”
  Carolina Müller as phenomenon at the Royal Theatre Carolina Müller is identical with the Royal Theatre and she was the first professional female opera singer in Sweden. The audience’s perception of her stage personality and her agency in her portrayal of the title role in C. W. Gluck’s opera Alceste at the Stockholm opera in 1781 will throw light on her quality; her singing and acting style according to the affect she created on stage linked to the age of sensibility. Carolina Müller’s agency constitutes a gap in Swedish theatre history which will be examined in order to reach a better understanding of the structures behind her position. Willmar Sauter’s concept of the theatrical event, but with a feministic perspective on the role of the actress, is used to analyze her performativity, which I characterize as both passionate and sentimental. I use historical descriptive sources to understand her stage personality, and I will look into her performance of Alceste from the perspective of late eighteenth century acting. Secondly, I look into the prescriptive sources linked to Alceste, to examine how her stage personality affected the production, she had a great impact on the creation of the opera characters written for her after her Alceste. Finally, I highlight how the European exchange allowed her to emerge as a phenomenon. Telling her story is a contribution to the history of the prima donnas of the north, and thereby to the field of feminist historiography.  Carolina Müller, Gluck, Alceste, actress, Royal Theatre, phenomenon, stage personality, agency, theatrical event, performativity, sensibility, gaze

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[pt] A vibração excessiva da coluna de perfuração leva à perda da eficácia do processo de perfuração de poços de petróleo e causa danos prematuros ao equipamento. Portanto, entender a dinâmica do sistema é essencial. O comportamento complexo das colunas de perfuração estimulou um grande número de publicações sobre a dinâmica de perfuração. A vibração torsional está presente na maioria dos processos de perfuração, eventualmente atingindo o fenômeno de stick-slip. Essa vibração torsional resulta da interação não linear entre brocas e rochas. Apesar da complexidade da interação broca-rocha, a relação entre torque e velocidade de broca é, frequentemente, tratada como uma força de atrito seco em um sistema delgado. Um grande número de modelos de atrito é usado para descrever a interação entre brocas e rochas, embora um modelo adequado seja necessário para uma interpretação precisa de sistemas com atrito. Esta contribuição utiliza dados experimentais de uma bancada de testes, capaz de reproduzir o comportamento torsional de um sistema real, equipada com dispositivos de freio simples para introduzir atrito ao sistema, perturbando o movimento de rotação. A bancada é matematicamente modelada como um pêndulo de torção atuado. Esta dissertação propõe um modelo de atrito baseado em dados experimentais e analisa vários fenômenos observados em relação ao atrito, incluindo a histerese. Os resultados experimentais são usados para identificação dos parâmetros do modelo proposto. Por fim, simulações numéricas e resultados experimentais são comparados para validação do modelo de atrito proposto. / [en] Excessive drill string vibration leads to loss of the drilling process effectiveness and premature damage to the equipment. Therefore, understanding the system dynamics is essential. The complex behavior of drill strings attracted considerable attention in specialized literature. Due to the drill string slenderness, torsional vibration is present in most drilling routines, eventually reaching the stick-slip phenomenon. This torsional vibration results from the nonlinear interaction between drill-bits and rocks. Despite the complexity of the bit-rock interaction, researchers often treat the relationship between torque and bit velocity as a dry friction force in a slender system. A large number of dry friction models is used to describe the interaction between drill bits and rocks although a proper model is required for a precise interpretation of systems with friction. This contribution utilizes data from a test rig that is capable of reproducing full-scale system torsional behavior with simple brake devices to introduce friction into the system, disturbing the rotating motion. This test rig is modeled as an actuated torsional pendulum for the numerical investigations of the experimental friction. This dissertation proposes a friction model based on experimental data and analyzes various frictional phenomena observed, including hysteresis. The experimental results are used to identify the proposed model parameters. Lastly, it compares numerical simulations with the experimental results and validates the proposed friction model.