Abstract In cycling, drag is the force that opposes the cyclist’s motion and is caused by the cyclist’s and their equipment’s interaction with the air. The surface area of the cyclist and their equipment, such as the bike, helmet, and body postures, substantially impact how much drag they encounter. This study compared the energy cost (Ec) of an able-bodied and shoulder amputee cyclist through numerical simulations using computer fluid dynamics (CFD). According to the hypothesis, an able-bodied cyclist may use more energy at a given speed than an able-bodied cyclist. For this study, a professional male cyclist who weighs 65 kg and is 1.72 m tall took part. The estimated Ec was lower for a shoulder amputee in comparison to an able-bodied cyclist. Significant statistical differences and relationships were found between the cyclists for the 11 selected speeds. Altogether, this study allows us to conclude that, for the same conditions, an able-bodied cyclist delivers less Ec in comparison to a shoulder amputee. Such knowledge contributes to understanding cycling performance and may inform training, equipment design, and energy optimisation strategies for diverse cyclist populations.

This work focuses on the public debate on social media platforms that address environmental issues in Brazil. It aims to map and analyze the conceptualization mechanisms that guide the construction of meanings underlying the discursive dispute involving the theme of agribusiness in news links circulating on Facebook (Meta, Inc.). Based on methodological tools for analyzing online social networks (Ruediger, 2017), a search syntax (Dienstbach et al., 2021) related to the topic of agribusiness and its execution in the CrowdTangle application ( Meta, Inc.). With this, around 3.1 thousand posts made in Portuguese were identified, on public Facebook pages and groups, between January 1st and February 1st, 2023. From this, possible relationships between textual regularities were analyzed. of posts and discursive aspects ‒ related to social, historical and political factors ‒ linked to these regularities, based on the theoretical and analytical collection of a socio-cognitive approach to language and discourse (Langacker, 1987; Wodak, 2006; Van Dijk, 2017). Results show that news links circulating on Facebook conceptualize, for the most part, agribusiness from a perspective guided by production success and profit. Persistence in numerical figures supports cognitive models of a growing ECONOMY and decreasing HUNGER. Another frequent fact is the VILLAINIZATION of the management of former president Bolsonaro (PSL) and his ministers, through allegedly secretive actions.

Este trabajo se centra en el debate público en plataformas de redes sociales que abordan cuestiones ambientales en Brasil. Tiene como objetivo mapear y analizar los mecanismos de conceptualización que orientan la construcción de significados subyacentes a la disputa discursiva que involucra el tema de los agronegocios en enlaces de noticias que circulan en Facebook (Meta, Inc.). Basado en herramientas metodológicas de análisis de redes sociales en línea (Ruediger, 2017), se desarrolló una sintaxis de búsqueda (Dienstbach et al., 2021) relacionada con el tema de agronegocios y su ejecución en la aplicación CrowdTangle (Meta, Inc.). Con esto, se identificaron alrededor de 3,1 mil publicaciones realizadas en portugués, en páginas y grupos públicos de Facebook, entre el 1 de enero y el 1 de febrero de 2023. A partir de esto, se analizaron posibles relaciones entre regularidades textuales de publicaciones y aspectos discursivos ‒ relacionados con lo social, factores históricos y políticos vinculados a estas regularidades, a partir de la recopilación teórica y analítica de un enfoque sociocognitivo del lenguaje y el discurso (Langacker, 1987; Wodak, 2006; Van Dijk, 2017). Los resultados muestran que los enlaces de noticias que circulan en Facebook conceptualizan, en su mayor parte, los agronegocios desde una perspectiva guiada por el éxito de la producción y las ganancias. La persistencia de las cifras numéricas respalda los modelos cognitivos de una ECONOMÍA en crecimiento y un HAMBRE en disminución. Otro hecho frecuente es la VILLAINIZACIÓN de la gestión del expresidente Bolsonaro (PSL) y sus ministros, a través de acciones supuestamente secretistas.

Este trabalho se debruça sobre o debate público em plataformas de mídias sociais que abordam questões ambientais no Brasil. Tem o objetivo de mapear e analisar os mecanismos de conceptualização que orientam a construção dos significados subjacentes à disputa discursiva envolvendo a temática do agronegócio em links de notícias que circulam no Facebook (Meta, Inc.). Com base em ferramentas metodológicas de análise de redes sociais on-line (Ruediger, 2017), procede-se à elaboração de uma sintaxe de busca (Dienstbach et al., 2021) relativa ao tema do agronegócio e à sua execução na aplicação CrowdTangle (Meta, Inc.). Com isso, identificaram-se cerca de 3,1 mil postagens feitas em português, em páginas e grupos públicos do Facebook, entre 1º de janeiro e 1º de fevereiro de 2023. A partir disso, analisam-se as possíveis relações entre as regularidades textuais das postagens e aspectos discursivos ‒ relativos a fatores social, histórico e político ‒ atrelados a essas regularidades, a partir do acervo teórico e analítico de uma abordagem sociocognitiva da linguagem e do discurso (Langacker, 1987; Wodak, 2006; Van Dijk, 2017). Resultados mostram que links de notícias que circulam no Facebook conceptualizam, na sua maioria, o agronegócio sob um viés pautado pelo sucesso da produção e pelo lucro. A persistência em cifras numéricas sustenta modelos cognitivos de ECONOMIA em crescimento e de FOME em decrescimento. Outro dado frequente é a VILANIZAÇÃO da gestão do ex-presidente Bolsonaro (PSL) e seus ministros, através de ações alegadamente sigilosas.

Resumen El objetivo general consistió en conocer la relación entre evaluación, educación y creatividad en estudiantes de la Escuela de Bachilleres Venustiano Carranza de la Universidad Autónoma de Coahuila. La metodología que se utilizó fue cuantitativa, que alude a la frecuencia relativa a partir del instrumento que contiene variables numéricas para procesarlas usando métodos estadísticos; cualitativa, que se ve reflejada en la integración de aportaciones y contribuciones de cada eje de la investigación; transeccional, puesto que es una investigación que recopila datos en un momento único; expositiva, ya que describe y explica lo que subyace en el fenómeno y correlacional e integracional, por definir las relaciones existentes y denota la relevancia entre los factores del fenómeno de estudio, por tales razones, se orienta al desarrollo original, ya que destaca estructuras subyacentes referentes a las temáticas. Las respuestas se alcanzaron con un instrumento de tipo numérico conformado por 158 variables en escala centesimal de razón. La muestra se integró por 150 sujetos, para ello, se empleó un muestro no probabilístico mediante la estrategia por conveniencia. Los análisis de los datos fueron: caracterización, correlación, comparación e integracional. Los principales hallazgos se desarrollaron a través del procesamiento estadístico factorial, del cual se desprende el paradigma propuesto que señala que la evaluación tiene un papel fundamental en la formación, la cual es necesaria para planificar de manera integral y cuidando promover aspectos cuantitativos y cualitativos, ya que estos buscan fortalecer la calidad educativa, así como la autenticidad del ser. Con ello se muestra un desarrollo pleno del individuo en actividades extracurriculares que impactan la calidad de vida y el medio ambiente. Las conclusiones destacadas indican que la educación en modalidad virtual es el eje central por el cual el estudiantado explota al máximo esplendor sus habilidades creativas; además, el cumplimiento de metas académicas del estudiantado reside en la aplicación de evaluaciones de carácter cuantitativo, que serán un pilar clave para fomentar una conducta responsable. Finalmente, la diversidad de enfoques pedagógicos en el diseño curricular coadyuva a la transformación del campo productivo, a partir de procesos educativos que detonen actitudes de reflexión.

Abstract The general objective of the research consisted of knowing the relationship between evaluation, education, and creativity in students of the Venustiano Carranza High School, of the Autonomous University of Coahuila. The methodology used was quantitative, which refers to the relative frequency from the instrument that contains numerical variables to process them using statistical methods. Likewise, the authors used the qualitative methodology, reflected in the integration of contributions of each axis of the investigation. For its part, thanks to the choice of a transactional methodology, this research collected data in a single moment. An expository methodology was also employed, through which the underlying phenomenon was described and explained. Regarding the correlational and integrational methodology, the authors used it to define the existing relationships and denote the relevance between the factors of the study phenomenon. For these reasons, it is oriented to the original development since it highlights referent underlying structures related to the themes. The answers were reached with a numerical type instrument made up of 158 variables on a centesimal ratio scale. Regarding the answers, these were reached with a numerical instrument made up of 158 variables in a centesimal ratio scale. The sample was integrated by 150 subjects; for which a non-probabilistic sample was used using the convenience strategy. The data analysis were frequencies and percentages, characterization, correlation, comparison, and integration. The main findings were developed through factorial statistical processing from which the proposed paradigm emerges, which indicates that evaluation has a fundamental role in training, which is necessary to plan comprehensively, taking care to promote quantitative and qualitative aspects, since they seek to strengthen the educational quality, as well as the authenticity of the being, and with this, full development of the individual is shown in extracurricular activities that impact the quality of life and the environment. The outstanding conclusions indicate that virtual education is the central axis by which the students exploit their creative abilities to the maximum splendor. In addition, the fulfillment of the student's academic goals lies in the application of quantitative evaluations, which will be a key pillar to promote responsible behavior, finally, the diversity of pedagogical approaches in curricular design contributes to the transformation of the productive field, based on educational processes that trigger attitudes of reflection.

Abstract This paper qualitatively explores how third-year primary school students (8-9 years old) approach questions about a generalization problem that involves a pictorially presented functional relationship ( i(m)=3m+2 ). Using the Grounded Theory, the strategies, relationships, and representations used by 11 students are examined through the analysis of their written productions in response to a paper-based task. The results obtained show the variety and combined use of strategies by students as well as the use of covariation and correspondence relationships, occasionally, under a proportional reasoning that accounts for an illusion of linearity . Likewise, particularization and contextual generalization are observed when it comes to answering a general question. We can see the influence of geometric aspects of the pictorial representation that presents the functional relationship in the students’ resolutions. The importance of the problem context, of the numerical relations between the quantities involved, of their size, and of their determinate/indeterminate character to promote functional thinking is manifested. As a consequence of the study, implications are derived in the design of tasks to this end in the first grades. thirdyear third year 89 8 9 (8- old im=3m+2 im3m2 imm i m =3m+2 3m 2 i(m)=3m+ ) Theory relationships 1 paperbased based task occasionally Likewise question resolutions context involved size determinateindeterminate determinate indeterminate manifested study grades (8 im im=3m+ im3m 3m2 =3m+ i(m)=3m im=3m =3m

Resumen En este trabajo se explora, de forma cualitativa, cómo estudiantes de tercer curso de educación primaria (ocho, nueve años) abordan cuestiones sobre un problema de generalización que involucra una relación funcional ( i(m)=3m+2 ) presentada pictóricamente. Bajo el uso de la Teoría Fundamentada se examinan las estrategias, relaciones y representaciones empleadas por once estudiantes a través del análisis de sus producciones escritas en respuesta a una tarea en formato papel. Los resultados obtenidos muestran la variedad y el uso combinado de estrategias de los estudiantes, así como de las relaciones de covariación y correspondencia, ocasionalmente asociadas a un razonamiento proporcional que da cuenta de una ilusión de linealidad . Asimismo, se observa particularización y generalización contextual en respuesta a una cuestión general. Se percibe la influencia de aspectos geométricos de la representación pictórica que presenta la relación funcional en la resolución de los estudiantes. Se manifiesta la importancia del contexto del problema, de las relaciones numéricas entre cantidades involucradas, del tamaño de las cantidades y de su carácter determinado e indeterminado para promover el pensamiento funcional. Como consecuencia del estudio se derivan implicaciones en el diseño de tareas para este fin en los primeros cursos. explora cualitativa ocho, ocho (ocho años im=3m+2 im3m2 imm i m =3m+2 3m 2 i(m)=3m+ pictóricamente papel correspondencia Asimismo general involucradas cursos im im=3m+ im3m 3m2 =3m+ i(m)=3m im=3m =3m

Abstract The investigation of forms of algebraic thinking does not evade the discussion on forms of arithmetical thinking. Previous studies show that the absence of spatial clues in the students’ investigation of numerical sequences leads to the generalization of relationships between numbers, which implicitly facilitates the emergence of trial-error strategies that stand as an obstacle to the deductive thinking on which analyticity rests. Based on data from PhD research and an extension program with mathematics teachers, the semiotic activity of a student and a primary school teacher, respectively, is analyzed. This analysis suggests the presence of a conceptual zone in which sophisticated forms of arithmetic generalization would be very close to proto-forms of algebraic thinking, and, furthermore, it opens a path to deepen the epistemological reflection in order to achieve a better understanding of this conceptual zone.

Resumen La investigación sobre formas de pensamiento algebraico no evade la discusión de las formas de pensamiento aritmético. Resultados de investigación muestran que la ausencia de indicios espaciales en el estudio de secuencias numéricas hace que los estudiantes limiten el proceso de generalización al trabajo sobre relaciones entre números. En este artículo, a partir de datos provenientes de una investigación doctoral y de un programa de extensión con profesores de matemáticas, se analiza la actividad semiótica de una estudiante y de una profesora de primaria, respectivamente. El análisis sugiere la presencia de una zona conceptual en la que formas sofisticadas de generalización aritmética estarían muy cerca de proto-formas de pensamiento algebraico, y, además, abre pistas para profundizar la reflexión epistemológica en aras de lograr una caracterización más inteligible de esta zona conceptual en el aprendizaje del álgebra.

Abstract This article aims to analyse the participation of women in the administrative offices of the railways in Argentina during the second half of the 20th century, paying particular attention to the perspective of the women workers themselves. To that end, I analyse the numerical asymmetry between men and women in the workplaces, the impact of familial relationships on working life, and the interrelationship between offices and train depots. I argue that administrative jobs were not necessarily seen as “women’s work”; hence, it is important to consider the specific variations across different geographical locations that characterise a scenario with a diverse range of experiences. For some of the subjects of the study, working in the offices exposed them to profoundly uncomfortable situations. Despite that, in the context of the limited spaces they found to work on the railways, administrative work offered some roles which were more receptive to the incorporation of women. Indeed, it is even the case that some of the workers manifest a strong sense of identification with their work. Drawing on qualitative methodology, this study is based on in-depth interviews with women workers from Mechita, Junín, Santa Fe and Capital Federal, and documentary analysis of company records.

Resumen El artículo tiene por objetivo examinar la participación de las mujeres en las dependencias administrativas en el sector ferroviario en Argentina en la segunda mitad del siglo XX, haciendo especial énfasis en la propia perspectiva de las trabajadoras. Para ello, se analiza el desequilibrio numérico entre varones y mujeres en los espacios laborales, el impacto de las relaciones familiares en el trabajo y la interrelación entre oficinas y talleres. Se sostiene que la realización de trabajos administrativos no fue necesariamente vista como un “trabajo de mujeres”; de allí que sea importante considerar las modulaciones específicas que se daban en diferentes geografías y que describen un escenario con experiencias diversas. Para algunas de las entrevistadas, el trabajo en las oficinas implicó situaciones de profunda incomodidad. Aun así, dentro de los reducidos espacios que encontraron para desempeñarse laboralmente en el ferrocarril, las tareas administrativas han representado puestos más permeables a la incorporación de mujeres. Incluso, en ciertos casos, se evidencia una importante identificación para con su trabajo. Partiendo de una metodología cualitativa, el estudio se basa en entrevistas en profundidad a trabajadoras de las localidades de Mechita, Junín, Ciudad de Santa Fe y Capital Federal y en el análisis documental de legajos empresariales.

Abstract Due to its relevance in Geosciences, the stress effect on the dynamic rock properties has been studied experimentally and theoretically for several decades. These works have been oriented mainly to sand-stones, and relatively few to carbonate rocks, despite its relevance. On the other hand, the description of the phenomenon is mathematically and numerically complex since it involves the non-linear coupling of the fluid flow with the rock deformation. This work seeks to analyze that little-explored part of experimental tests in carbonates combined with its numerical simulation. It presents experimental tests carried out on Bedford limestone cores and analyzes the effect of confinement stress and fluid pressure (pore pressure) on its permeability, by two test types, known as hydrostatic (low shear stress) and not hydrostatic (high shear stress) tests. In this work, a mathematical model is presented to describe the phenomenon, considering a single-phase fluid, an elastic rock response, and its numerical implementation in finite elements. The coupling of fluid flow with stress is regularly modeled by algebraic relationships of porosity and permeability as a function of stress. A permeability-stress relationship used in this work depends linearly on volumetric strain and pore pressure. The experimental results show that in general, the permeability increases with fluid pressure and decreases with confinement stress. The reduction with the confinement stress is small in the range of confinement stresses analyzed, but it is noticeably more important in the non-hydrostatic tests (8%) than in the hydrostatic ones (2%). The model fitting to experimental data, specifically to the core pressure drop as a function of time, is carried out through the variation of the permeability-stress relationship parameters. The fitting parameters value differs from the reported value for sandstones, which may be indicative of the difference in the porous structure and mechanical properties of the rocks.

Resumen Por su relevancia en Geociencias, el efecto de los esfuerzos sobre las propiedades de flujo de fluido en rocas ha sido estudiado experimental y teóricamente por varias décadas. Los trabajos se han orientado principalmente a rocas tipo arenisca, y relativamente poco, a pesar de su relevancia, en rocas carbonatadas. Por otro lado, la descripción del fenómeno es matemática y numéricamente complejo, ya que involucra el acoplamiento no lineal del flujo de fluido con la deformación de la roca. En este trabajo se busca incursionar en esa parte poco explorada de pruebas experimentales en carbonato y su simulación numérica. En él se presentan pruebas experimentales realizadas en núcleos de caliza Bedford, y se analiza el efecto de los esfuerzos de confinamiento y de la presión del fluido (presión de poro) sobre la permeabilidad a través de dos tipos de pruebas, conocidas como hidrostáticas (bajos esfuerzos de corte) y no hidrostáticas (altos esfuerzos de corte). En este trabajo se presenta un modelo matemático para describir el fenómeno, considerando un fluido monofásico, una respuesta elástica de la roca, y su implementación numérica en elementos finitos. El acoplamiento del flujo de fluido con los esfuerzos se modela utilizando relaciones algebraicas de porosidad y permeabilidad en función del esfuerzo. La relación permeabilidad-esfuerzo utilizada en este trabajo depende linealmente de la deformación volumétrica y la presión de poro. Los resultados experimentales muestran que en general la permeabilidad se incrementa con la presión del fluido y se reduce con el esfuerzo de confinamiento. La reducción con el esfuerzo de confinamiento en el rango de esfuerzos de confinamiento analizado es relativamente pequeña, pero es notoriamente más importante en las pruebas no-hidrostáticas (8%) que en las hidrostáticas (2%). El ajuste del modelo a los resultados experimentales, específicamente a la caída de presión en el núcleo en función del tiempo, se realiza mediante la variación de los parámetros de la relación permeabilidad-esfuerzo. El valor de estos parámetros de ajuste difiere del valor reportado para areniscas, lo cual puede ser indicativo de la diferencia en la estructura porosa y las propiedades mecánicas de las rocas.

RESUMEN El modelado numérico es una herramienta poderosa para determinar la relación esfuerzo-deformación de las estructuras. Sin embargo, para una aplicación confiable, los modelos físicos y matemáticos deben ser calibrados y validados. Este artículo presenta una mirada a la calibración numérica empleando el método de elementos finitos y ensayos físicos de placa de carga en un terraplén. Se realiza además un análisis de los modelos constitutivos empleados en suelos y se selecciona el modelo constitutivo elástico-plástico de Mohr-Coulomb por ser el que mejor se acomoda a este estudio. Se utilizan los resultados de tres áreas de prueba dentro de un proyecto de refinería que el gobierno cubano llevó a cabo en la provincia de Cienfuegos. El modelo numérico empleado en este estudio se calibró empleando la teoría de errores y la prueba de hipótesis no paramétrica U de Mann-Whitney. Desde un punto de vista práctico, este estudio brinda dos procedimientos para calibrar un modelo numérico con resultados experimentales.

ABSTRACT Numerical modeling is a powerful tool to determine the stress-strain relationships of structures. However, for a reliable application, physical and mathematical models must be calibrated and validated. This paper presents an overview of numerical calibration through the finite element method and plate-load tests in an embankment. Additionally, an analysis of the constitutive models used in soils is performed, and the elastic-plastic constitutive model of Mohr-Coulomb was selected since it is the best suited for this study. The results from three test areas within a refinery project that the Cuban government undertook in the province of Cienfuegos are used. The numerical model used in this study was calibrated by means of the error theory and the non-parametric hypothesis tests from Mann-Whitney U. From the practical point of view, this study gives two procedures to calibrate the numerical model with experimental results.

Summary Background and aims : Zephyranthes brachyandra belongs to a tribe of ornamental Amaryllidaceae native of South America, whose genera circumscription and phylogenetic relationships are still unclear. Cytologically, Z. brachyandra is a tetraploid whose chromosomes are of similar size and morphology, hindering the identification of its 2n = 24 chromosomes. The aim of this study was to investigate the stability of the many CMA+ and DAPI+ bands and the occurrence of B chromosomes by a cytomolecular approach. M&M : For this investigation we conducted a cytomolecular analysis with CMA/DAPI staining and fluorescence in situ hybridization with 5S and 35S rDNA probes, and the TTTAGGG telomeric probe. Results : In the present work, a cytomolecular analysis of Z. brachyandra, revealed a large and variable number of CMA+ and DAPI+ heterochromatic bands and 5S and 35S rDNA sites, and a regular distribution of the TTTAGGG telomeric sequences. In addition, one individual was monotrisomic with 2n = 24, and another one had a B chromosome. Both numerical and structural chromosome alterations were clearly characterized by CMA/DAPI bands and rDNA sites. Conclusions : Comparing the present data with the cytological data for other species of Zephyranthes, it becomes clear that a cytomolecular approach is fundamental to the understanding of the chromosome variation and cytotaxonomy of the group.

Resumen Introducción y objetivos : Zephyranthes brachyandra pertenece a una tribu de Amaryllidaceae ornamentales nativa de América del Sur, cuya circunscripción de géneros y relaciones filogenéticas aún no están claras. Citológicamente, Z. brachyandra es un tetraploide cuyos cromosomas son de tamaño y morfología similar, lo que dificulta la identificación de sus 2n = 24 cromosomas. El objetivo de este estudio fue investigar la estabilidad de las numerosas bandas CMA+ y DAPI+ y la aparición de cromosomas B mediante un enfoque citomolecular. M&M : Para esta investigación realizamos un análisis citomolecular con tinción CMA/ DAPI e hibridación fluorescente in situ con sondas de ADNr 5S y 35S, y la sonda telomérica TTTAGGG. Resultados : En el presente trabajo se realizaron varios análisis citomoleculares de Z. brachyandra, que revelaron un número alto y variable de bandas heterocromáticas CMA+ y DAPI+ y de sitios de ADNr 5S y 35S, además de una distribución típica de las secuencias teloméricas TTTAGGG. Además, un individuo era monotrisómico con 2n = 24 y otro tenía un cromosoma B. Las alteraciones cromosómicas tanto numéricas como estructurales se caracterizaron claramente por bandas CMA / DAPI y sitios de ADNr. Conclusión : Al comparar los datos actuales con la literatura citológica de otras especies del género Zephyranthes, queda claro que un enfoque citomolecular es fundamental para la comprensión de la variación cromosómica y la citotaxonomía del grupo.

Abstract The Brazilian Code ABNT NBR 7190 (1997) is currently under review process and one of the proposals is the change and add of some test procedures. Several specimen geometric configurations and test conditions have been evaluated by the study committee CE-02:126.10. The aim of this paper was the analysis of the tensile strength perpendicular to the grain through the current Brazilian Code and from an adaptation of ISO 13910 (2005). Pine and Indian Cedar were used and simplified relationships were proposed. Numerical simulations were performed to identify the stress distributions in the specimens. The results obtained by ISO 13910 (2005) did not differ statistically for the two species. Brazilian standard method cedar had a higher strength value than pine. The simplified ratios obtained ranged between 0,017 and 0,123. The numerical simulations of ISO 13910 (2005) specimens showed predominant failure by tension in the lower fiber due to stress concentration.

Resumo Introdução Estudos feministas contribuíram para o entendimento dos papéis de gênero atribuídos à mulher e ao homem enquanto processos socialmente construídos e não biologicamente determinados. No trabalho em saúde no Brasil, marcado pela predominância numérica de mulheres, a divisão sexual do trabalho é influenciada pela naturalização do cuidado como atributo feminino. Na terapia ocupacional, segundo o Conselho Regional da categoria, apenas 3,7% dos profissionais do Estado de São Paulo são homens, o que confere singularidade às relações entre gêneros na profissão. Objetivo Busca-se identificar e analisar experiências e percepções relacionadas ao gênero entre terapeutas ocupacionais autodeclarados homens. Método Estudo qualitativo de tipo exploratório, realizado por meio de entrevistas em profundidade com cinco terapeutas ocupacionais no município de São Paulo, SP, Brasil, posteriormente analisadas por meio de análise temática. Resultados Os entrevistados identificaram experiências que consideram ser privilégios de gênero não dissimulados, principalmente no que tange ao acesso ao emprego e à valorização profissional. Percebem que, no ambiente profissional, atuam estereótipos ligados ao padrão de comportamento atribuído ao gênero masculino, associando-o à força, autoridade e poder. Em se tratando de relações de cuidado com usuários, alguns participantes não percebem a presença de normas de gênero, o que parece convergente com a invisibilidade social desses processos. Conclusão Questões de gênero estão presentes nas vivências profissionais dos entrevistados, os quais, de modo geral, percebem-nas sob uma perspectiva crítica. Mostra-se relevante para a terapia ocupacional brasileira que novos estudos adensem reflexões e abordem distintas faces das relações de gênero na prática profissional.

Abstract Introduction Feminist studies have contributed to the understanding of the gender roles assigned to women and men as socially constructed and not biologically determined processes. In health work in Brazil, marked by the numerical predominance of women, the sexual division of labor is influenced by the naturalization of care as a female attribute. In occupational therapy, according to the Regional Council of the category, only 3.7% of professionals in the State of São Paulo are male, which gives uniqueness to gender relations in the profession. Objective We seek to identify and analyze gender-related experiences and perceptions among self-declared male occupational therapists. Method Qualitative exploratory study, carried out through in-depth interviews with five occupational therapists in the city of São Paulo, SP, Brazil, later analyzed through thematic analysis. Results Respondents identified experiences that they consider to be undisguised gender privileges, especially regarding access to employment and professional development. They perceive that, in the professional environment, there are stereotypes linked to the pattern of behavior attributed to the male gender, associating it with strength, authority and power. When it comes to care relationships with users, some participants do not perceive the presence of gender norms, which seems to converge with the social invisibility of these processes. Conclusion Gender issues are present in the professional experiences of the respondents, who, in general, perceive them from a critical perspective. It is relevant for Brazilian occupational therapy that new studies increase reflections and address different aspects of gender relations in professional practice.

Resumo A estrutura social patriarcal produz e sustenta violências cotidianas individuais e coletivas. Baseamo-nos na ideia de “corpos/experiências”, como pulsão vital para o existir, compreendendo o corpo-terapia ocupacional, profissão predominantemente feminina, para retratar as violências de gênero. O objetivo foi compreender as percepções de terapeutas ocupacionais, atuantes do campo da saúde, sobre violências de gênero em seus cotidianos, por meio da cartografia como dispositivo metodológico. Foram analisadas 67 respostas de terapeutas ocupacionais dentre 1018 respondentes de questionário remoto produzido pelo coletivo Adelaides em pesquisa sobre experiências de violência de gênero no Brasil vivenciadas por mulheres do campo da saúde coletiva. Com questões narrativas e de múltipla escolha, o questionário foi distribuído em três seções: dados socioeconômicos; atuação profissional e acadêmica; experiências envolvendo machismo e violência, e em ações de enfrentamento. Os dados numéricos foram analisados com estatística simples e os qualitativos baseadas na técnica analítica da tradução das narrativas. Os resultados indicam que 91% das participantes sofreram violências por ser mulher nos espaços cotidianos do domicílio, de estudo, trabalho e/ou ambientes públicos. As formas de enfrentamento utilizadas foram organizadas em quatro ações: formar e pesquisar, politizar, romper e cuidar. Concluímos que o cotidiano se apresenta como um espaço-tempo potencial das expressões, visíveis e invisíveis, da ação humana, que podem se manifestar por ações violentas, assim como por ações de enfrentamento, assumindo aspectos de reprodução ou transformação das relações estabelecidas como as embebidas na cultura da violência a que as mulheres estão submetidas.

Abstract The patriarchal social structure produces and sustains individual and collective violence every day. We are based on the idea of “bodies/experiences”, as a vital drive for existence, comprising occupational body-therapy, a predominantly female profession, to portray gender violence. The objective was to understand the perceptions of occupational therapists working in the health field about gender violence in their daily lives, through cartography as a methodological device. We analyzed 67 responses from occupational therapists among 1018 respondents to a remote questionnaire produced by the Adelaides collective in a research on experiences of gender violence in Brazil experienced by women in the field of public health. With narrative and multiple-choice questions, the questionnaire was divided into three sections: socioeconomic data; professional and academic performance; experiences involving machismo and violence, and in coping actions. Numerical data were analyzed using simple statistics and qualitative data based on the analytical technique of narrative translation. The results indicate that 91% of the participants suffered violence for being a woman in the daily spaces of the home, study, work and/or public environments. The coping ways used were organized into four actions: training and research, politicizing, breaking away and caring. We conclude that everyday life presents itself as a potential space-time of expressions, visible and invisible, of human action, which can be manifested by violent actions, as well as by confrontational actions, assuming aspects of reproduction or transformation of established relationships such as those embedded in in the culture of violence to which women are subjected.

ORIENTATION: The study has been undertaken to design an Operational Excellence (OE) Strategy Implementation Model for Growth in a VUCA (Volatile, Uncertain, Complex, and Ambiguous) Environment. The study was conducted using Johannesburg Stock Exchange (JSE) listed companies. RESEARCH PURPOSE: To develop an OE strategy implementation model for organisational growth in a VUCA environment. MOTIVATION OF STUDY: Illuminating problems such as the prevailing coronavirus disease 2019 (COVID-19) pandemic are impeding OE strategy implementation by JSE listed organisations, suggesting the fact that existing models do not address changes in VUCA environments. RESEARCH DESIGN, APPROACH AND METHOD: This research collected quantitative data using the questionnaire instrument rolled out through SurveyMonkey to 1000 people working for JSE listed companies implementing Operational Excellence. The data collected from the 430 responses of the sampled 1000 was acceptable according to Krejcie and Morgan (1970) formula which requires 384 as minimum for generalisation. The data was cleaned for analysis using the Stata SE version 15.1 where all variables were transformed into numerical score on the Likert scale. The linear regression of the variables enabled the linkages that resulted in structural relationships. The structural equation modelling (SEM) technique was used to further analyse the structural relationships observed, these relationships enabled the construction of the final model through path analysis. MAIN FINDINGS: The study found that OE strategy can only drive growth through proper implementation, maintenance, and improvements utilising management review of best practices, policies, and procedures on key performance metrics such as revenue, profits and return on investment. PRACTICAL/MANAGERIAL IMPLICATIONS: Shortcomings of the existing models were interrogated and gaps found in order to design a more suitable model for growth which takes cognisance of the VUCA Environment. CONTRIBUTION/VALUE-ADD: A new model was designed that can be used successfully as a holistic tool in OE to drive growth by practitioners of the industry.

Resumen Calculamos los estados electrónicos en volumen para GaAs y AlAs en estructura Zinc-Blenda usando el método Tight-Binding (TB). El Hamiltoniano TB se construyó usando una base de orbitales s, p y s*. Los orbitales s* representan estados excitados con igual simetría de los orbitales s. Llevando a cabo la diagonalización numérica del Hamiltoniano, se determinaron las relaciones de dispersión para algunas direcciones de alta simetría de la primera zona de Brillouin (PZB), obteniendo un gap directo de 1.54 eV para GaAs y un gap indirecto de 2.26 eV para AlAs. Las densidades de estados totales (DOS) y parciales indican la presencia de orbitales s en la parte inferior de la banda de valencia (BV), orbitales p en la parte superior de la BV y en la parte inferior de la banda de conducción (BC), y orbitales s* en la parte superior de la BC. Nuestros resultados concuerdan bastante bien con otros reportes experimentales y teóricos.

Abstract We calculate the electronic states in volume for GaAs and AlAs in Zinc-Blenda structure using the Tight-Binding (TB) method. The TB Hamiltonian was constructed using a base of s, p and s* orbitals. The s* orbitals represent excited states with equal symmetry as the s orbitals. Carrying out the numerical diagonalization of the Hamiltonian, the dispersion relationships were determined for some directions of high symmetry of the first Brillouin zone (FBZ), obtaining a direct gap of 1.54 eV for GaAs and an indirect gap of 2.26 eV for AlAs. The total (DOS) and partial state densities indicate the presence of s orbitals in the lower part of the valence band (BV), p orbitals in the upper part of the BV and in the lower part of the conduction band (BC), and s* orbitals on top of BC. Our results agree quite well with other experimental and theoretical reports.

Abstract This article deals with the rheology of tailings deposits related to dam break analysis. The material used was a fine tailings from iron ore processing. Geotechnical and rheological characterization of these tailings were performed. The rheological characterization consisted of rotational and oscillatory tests. It was observed that the rheological properties depend on material solids content and sample preparation method. Furthermore, the material showed viscous or viscoplastic fluid behavior, depending on the solids content. The results of the rheological tests were used as input in numerical flow simulations using Flow-3D® software. Failure of a hypothetical tailings deposit was simulated, with different scenarios. Relationships between traveled distance (range, spreading), speed, and time of arrival of the flow wave versus rheological properties were determined. It was found that tailings runs are also strongly influenced by the solids content and deposit stress history (formation), resulting in different flow types ranging from mudflood, through mudflow, and even landslide. A major finding was that in the Flow-3D® analyses, the deposit volume mobilized, and the output hydrograph are parts of the solution, and not premises or a model to follow (e.g. design breach).