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Controle de Amaranthus spp. utilizando o potencial alelopático de Brassicas
(Universidade Federal de São Carlos, 2025-05-27)
Barbosa, Murilo Rafael
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Monquero, Patricia Andrea
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https://lattes.cnpq.br/2766526793830455
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https://lattes.cnpq.br/3752261793713523
The Amaranthus genus has presented biotypes with resistance to different herbicides, making its management increasingly challenging. Alternatively, species of the Brassica genus stand out for their allelopathic potential, due to the release of chemical substances known as allelochemicals, capable of inhibiting the growth of organic plants. The present study aimed to evaluate different concentrations of dry extracts of the aerial part of canola (Brassica napus), mustard (Brassica juncea) and forage radish (Raphanus sativus) in the suppression of purple pigweed (Amaranthus hybridus), creeping pigweed (Amaranthus deflexus) and common pigweed (Amaranthus viridis) and to identify the classes of phytochemical constituents with potential allelopathic activity presented in the aqueous extract of Brassicas. The experimental design was completely randomized, in a 5x3 factorial arrangement, with five concentrations (100%, 50%, 25% and 12% and 0% as control) of dry extracts of the aerial part of Brassica species in the suppression of Amaranthus species, in four replicates. In the germination bioassay, Amaranthus species were sown in petri dishes soaked with 2 mL of each concentration and kept in BOD at 25°C and a 12-hour photoperiod, evaluating the germination percentage (%G) and the germination speed index (IVG). In the initial development bioassay, 5 ml of each extract was used on pre-germinated seeds in a container containing vermiculite, subjected to evaluation regarding hypocotyl and root length, phytotoxicity and fresh mass. A phytochemical test was performed based on qualitative reactions (color change, precipitate formation and physicochemical properties) in 2 ml samples of the crude extract of each Brassica for reducing sugars, alkaloids, anthraquinones, coumarins, steroids, flavonoids, phenols, glycosides, saponins, tannins and terpenes. An inhibitory effect on germination was observed in all concentrations of the extracts used, with greater inhibition at 50% and 100%. However, when the 12% concentration was used, there was a stimulation of the development of the weed species. The species A. deflexus was the most sensitive to the extracts, presenting the highest rate of germination inhibition. As the concentrations of the extracts increased, the IVG of the weed species was negatively affected, with a 100% reduction in the seeds exposed to the highest concentration (100%). There were no statistical differences in relation to the length of the hypocotyl, however, there was a reduction in the development of the root system of the seedlings, leading to poor development of the aerial part. The extracts induced phytotoxicity in the seedlings as the concentrations increased, culminating in necrosis, making it impossible to analyze the fresh mass. The phytochemical analysis of the extracts identified the presence of seven classes of chemical compounds: coumarin, steroid, flavonoid, phenol, glycoside, tannin and terpene. These results suggest that the different extracts used exert an allelopathic function on the germination and development of the weed species.
Improved parallel algorithm for finding minimum cuts in stochastic flow networks
(Universidade Federal de São Carlos, 2025-05-27)
Joshan, Mohammad Sadegh
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Pedrino, Emerson Carlos
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https://lattes.cnpq.br/6481363465527189
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https://orcid.org/0000-0003-3734-3202
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https://lattes.cnpq.br/0277215938197917
The expansion of information in social networks, bioinformatics, and transportation has resulted in the emergence of enormous graphs with millions or even billions of nodes and edges. Examples include communication networks with stochastic bandwidth, traffic systems with probabilistic congestion, and power grids with uncertain load demand. These scenarios pose unique computational challenges due to their probabilistic nature and dynamic structure. Traditional sequential techniques for identifying minimum cuts in graphs are ineffective in this context, as their time complexity becomes excessively high. This thesis addresses the problem by employing parallel techniques to compute minimum cuts more efficiently on large-scale graphs, leveraging modern parallel computing resources without compromising accuracy. The initial investigation explores state-of-the-art algorithms such as Parallel Push-Relabel and Parallel Karger, which depend on specific hardware and software conditions. The results support the design of the Dynamic Parallel Graph Cuts Algorithm (DPGCA), while also identifying limitations such as inefficient memory usage, limited energy scalability, and poor resource distribution in current parallel implementations.
Ensino de ciências e mudanças tecnológicas: do dilema limitante à construção humanizadora no IF Baiano campus Santa Inês
(Universidade Federal de São Carlos, 2025-05-27)
Silva, Cleber de Souza
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Pierson, Alice Helena Campos
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https://lattes.cnpq.br/3749421379531019
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https://orcid.org/0000-0002-5418-3418
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https://lattes.cnpq.br/6820414738853018
The contradictory role made to technology in modern times, of satisfying human needs while simultaneously being a means of reproducing oppression/exclusion, contrasts with the representation of the neutral and evolutiove application of scientific knowledge still present in Brazilian schooling. By defending the humanizing relationship, we seek to answer the question: what are the relationships between science teaching at IF Baiano, Santa Inês campus, and the technological changes in the living space of this community, established by subjects of scientific and technological education? We highlight the scientificist-technicist dilemma as a discursive practice organizing science teaching at the institution, and we discuss its historical roots. The dialogue between the studies of Dussel (1984), Feenberg (2010), and Santos (2002) included decisive elements in reaffirming the importance of a rupture in the meanings of technology shared by the subjects of education. We designed and carried out an ethical-critical curricular exercise based on the principles and guidelines of Freirean Thematic Investigation, the Curricular Restructuring Movements, and Critical Collaborative Research. In the thematic network produced, we observed the feasibility of the humanizing relationship between science teaching and local/global technological changes. Despite the regionalized limit situations, namely, the naturalization of productivism, clientelism and discrimination, bringing together significant statements that articulate the technological dimension, there was no consensus among educators about the contributions of science teaching. Finally, we highlight changes in ethics admitted by the collaborative research group, from an initial consensus to a conflict of positions about the best curricular orientation for science teaching.
A ontologia indireta de Merleau-Ponty e o vínculo entre arte, ciência e filosofia: Entre van Gogh, Einstein e Heisenberg: a imaginação enquanto capacidade cognitiva e expressiva do real
(Universidade Federal de São Carlos, 2025-05-27)
Tonon, Hugo
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Moutinho, Luiz Damon Santos
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https://lattes.cnpq.br/9475267722538751
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https://lattes.cnpq.br/2459404101194228
This thesis investigates the complementarity between art, science, and philosophy, based on Merleau-Ponty's indirect ontology and the analysis of scientific concepts and practices. Starting from van Gogh's work and Kolmogorov's idea of turbulence, we argue that imaginative cognition is a means of expressing and perceiving the world's meaning. Analyzing Merleau-Ponty's great rationalism, which integrates different forms of knowledge, and the practices of scientists like Heisenberg and Einstein, who used imagination to revolutionize physics, we conclude that expressive complementarity enriches our understanding of reality, uniting art, science, and philosophy.
Desenvolvimento de estratégias para melhorar a disponibilidade de fósforo em solos através da fermentação em estado sólido
(Universidade Federal de São Carlos, 2025-05-27)
Rodrigues, Natalia Alvarez
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Farinas, Cristiane Sanchez
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https://lattes.cnpq.br/9933650905615452
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https://orcid.org/0000-0002-9985-190X
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https://lattes.cnpq.br/8928436632437953
The growing concern over the environmental impacts of intensive agriculture has intensified the search for sustainable alternatives, such as bioinoculants and biofertilizers. Among these strategies, the use of phosphate-solubilizing microorganisms (PSMs) is particularly promising, as they can reduce dependence on conventional phosphate fertilizers, whose production is associated with significant environmental damage. Solid-state fermentation (SSF) has emerged as a favorable cultivation method in this context, enabling the valorization of agro-industrial residues as fermentation substrates, thereby supporting circular economy principles. Given this scenario, this thesis aimed to investigate biotechnological strategies for producing phosphate biofertilizers via the cultivation of PSMs through SSF. Initially, the study focused on improving the solubilization process of phosphate rocks (PRs) through SSF by optimizing oxalic acid production by the fungus Aspergillus niger. Using sequential experimental designs, several variables were assessed, including substrate composition, sucrose supplementation, and methanol addition. A substrate mixture of sugarcane bagasse and soybean bran (1:1 w w-1) was identified as the most effective for stimulating oxalic acid synthesis. Methanol addition proved to be a key factor in this process, increasing acid excretion threefold. Under optimized conditions - 7% methanol and 5 g of sucrose per kg of dry substrate (d.s.) -, substantial solubilization of Bayóvar, Itafós, and Registro PRs was achieved. Furthermore, the SSF process facilitated the release of organic P from the substrate itself, due to the production of enzymes such as phosphatases and cellulases. For Bayóvar PR, a maximum soluble P release of 12.1 g kg-1 d.s. was observed, corresponding to a solubilization efficiency of 63.8%. Based on these promising results, the process was evaluated in bench scale using a multilayer packed-bed bioreactor (PBB). Although the PBB system showed adequate operational behavior, methanol volatilization likely limited the solubilization efficiency to 24.6%. On the other hand, in situ drying of the fermented solids within the PBB successfully preserved both microbial viability and acid phosphatase activity over a 34-day storage period. Furthermore, greenhouse experiments revealed that substituting 50% of chemical fertilizer with the biofertilizers developed on a lab-scale did not compromise plant performance. Additionally, a different approach using the fungus Trichoderma harzianum was also explored, with a focus on optimize sporulation and enhancing the production of metabolites related to increased P acquisition by plants, such as indole derivatives and flavonoids. Cultivation was performed using beer draff and wheat straw as substrates. After optimization of aeration, proportion of substrates and inoculum size in 0.5 L PBBs, high values were achieved: 1.08 × 10¹⁰ spores g⁻¹ dry matter (DM), 511.3 µg g⁻¹ DM of indole derivatives, and 2.2 mg g⁻¹ DM of total flavonoids. At bench scale (22 L PBB), the system still supported good sporulation (1 × 10⁹ spores g⁻¹ DM) and indole derivative production (688 µg g⁻¹ DM). However, overheating of up to 16.5°C above the optimal temperature (25°C) resulted in significant axial and radial thermal gradients, which notably impaired the production of acid phosphatase and flavonoids. Overall, this work provides significant contributions to the development of phosphate biofertilizers through SSF, identifying both promising strategies and key challenges for future advancement.
Propostas de ensino por investigação sobre quantidade de movimento e corrente elétrica para alunos com TDAH
(Universidade Federal de São Carlos, 2025-05-27)
Oliveira, Gabriel Rinhel de
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Veraszto, Estéfano Vizconde
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Colato, Alexandre
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https://lattes.cnpq.br/5460973924624757
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https://orcid.org/0000-0003-0076-007X
In this work the aim is to discuss Attention Deficit Hyperactivity Disorder (ADHD), the teaching of physics and the impact that limited knowledge on the part of teachers can have on the education of students. As well as an introduction to ADHD, the main characteristics of the condition and the impact it can have on students’ development and learning were presented. Strategies developed by various authors as alternatives to traditional teaching were also presented in order to ensure a better education for students. Based on some of the proposals presented, namely Inquiry Teaching, two lesson plans were developed for secondary school students. The aim is to give students an active role in order to encourage the development of their reasoning and critical thinking skills.
Dilatação do espaço e tempo na franquia The Last of Us: lógica diegética no âmbito das franquias de mídia contemporâneas
(Universidade Federal de São Carlos, 2025-05-28)
Gonzalez, Allison Vicente
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Massarolo, João Carlos
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https://lattes.cnpq.br/3308336910966465
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https://lattes.cnpq.br/9650332168309193
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https://orcid.org/0000-0002-9189-1157
This research develops an analysis of The Last of Us™ as a media franchise that moves between adaptation and transposition, transitioning from a computer game to a television series. The study presents a history of computer game adaptations, aiming to highlight how the transition of these games to other media involves them in their own cultural and market-driven development, which is understood within the concept of media franchises. The contrast between a computer game and a cinematic production, however, is quite evident. The research incisively discusses this media contrast, which manifests in audiovisual adaptation processes and productions that encompass different media formats based on the same narrative—each with its own unique characteristics. By examining what defines a computer game and what defines a television series, it was observed that space-time representation categories serve as common conceptual elements within these audiovisual productions and the very definition of “media.” Based on this, the research follows this lead to identify how The Last of Us™ deliberately employs space-time representations and how the television series utilizes these same representations. It was possible to determine how space-time representations in The Last of Us™ converge within a shared development, allowing for different aesthetic experiences of the narrative as a whole, while each medium expresses its own unique capabilities. It was noted that each medium has the capacity to emphasize and intensify certain instances of space-time representation categories in relation to the other. Television series tend to enhance temporal representations, with spatial representations serving their function, whereas computer games intensify spatial representations, with temporal elements structured accordingly. As a result, in addition to highlighting different possibilities within each medium, the study also indicates how this contributes to the diegesis of The Last of Us™ as an intellectual property.
Conversaciones sobre la acción política con terapeutas ocupacionales en Colombia
(Universidade Federal de São Carlos, 2025-05-28)
García Ruiz, Alix Solángel
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Serrata Malfitano, Ana Paula
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https://lattes.cnpq.br/1462870858750395
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https://orcid.org/0000-0002-0502-3194
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https://lattes.cnpq.br/3596468307348516
Este estudio se soporta en el pensamiento filosófico de Antonio Gramsci para discernir la manera en que se configura la acción política hoy, en la vida profesional de terapeutas ocupacionales en Colombia. La investigación considera la perspectiva del materialismo histórico como forma de aprender, revelar y exponer una estructura; de reflexionar sobre la realidad particular; y de preguntar sobre el significado, los aspectos históricos, sociales, políticos y técnicos que circundan la profesión. La discusión fue basada en conversaciones con diversos terapeutas ocupacionales con el fin de recoger los procesos y las cotidianidades en polifonía de voces, de redes humanas y de tramas. La convocatoria a las conversaciones se realizó a través del Colegio Colombiano de Terapia Ocupacional, de los programas de formación de la profesión, y de redes sociales. Entre octubre de 2022 y mayo de 2023, se realizaron cinco grupos de conversación en las ciudades de Barranquilla, Bucaramanga, Medellín, Cali y Bogotá, en Colombia. La interacción contó con un total de 27 participantes de diferentes generaciones: 25 mujeres y 2 hombres. El grupo se conformó con 17 terapeutas ocupacionales vinculados al sector privado y 10 al sector público, 22 de los cuales son docentes universitarios de programas de terapia ocupacional. Finalmente, en octubre de 2024, una nueva conversación virtual se llevó a cabo con nueve de los colegas que participaron en el primer encuentro, donde se discutieron las categorías propuestas para el análisis. Las conversaciones reflejan una visión hegemónica del sentido común sobre el conflicto armado colombiano, la cultura institucional y el sistema de seguridad social en salud. Evidencian las formas de encontrar trabajo, las relaciones con los empleadores, las formas de contratación. Así mismo, la prestación de servicios ajustada a formalidades preestablecidas; el desperdicio de la experiencia y la imposibilidad de trabajar de manera colectiva. El actuar profesional responde a condiciones del mundo neoliberal y de un contexto de país centralista. Las conversaciones muestran la resistencia asociada a las reflexiones ético-políticas, las interacciones con los sujetos para quienes se trabaja, las decisiones conceptuales en la práctica, el reconocimiento profesional. Así mismo, evidencian una fuga de acciones colectivas que no se concretan en acciones transformadoras, donde el terapeuta ocupacional se convierte en empleado del consenso. Como resultado, dos disputas quedan claras: la primera entre un proyecto de desarrollo ético-político individual armonizado con las agendas del gobierno versus un proyecto ético-político colectivo que lucha por las necesidades de los sujetos en sus contextos. La segunda, entre el terapeuta ocupacional como empleado del consenso versus el sujeto político genuino. Finalmente, la tesis expone la complejidad de las condiciones y situaciones que vive la sociedad actual. En ella, los terapeutas ocupacionales cuestionan el lugar político de la profesión y sus posibilidades de contribuir a la transformación social y a la construcción de paisajes de esperanza.
Rousseau: a educação e a escola
(Universidade Federal de São Carlos, 2025-05-28)
Palhares, Rafaela Fernanda
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Cruz, Fernão de Oliveira Salles dos Santos
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https://lattes.cnpq.br/9496354571712524
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https://lattes.cnpq.br/0691170766824816
This study aims to investigate the concept of school in the thought of Jean-Jacques Rousseau. Based on the thesis of the natural goodness of the human being and the analysis of the state of nature, it seeks to understand how Rousseau structures two educational models—private and public—that, although they serve different purposes, share a common principle: respect for human nature. Rousseau considers that the goal of private education is to shape the natural man, while public education aims at the formation of the citizen. Although the author did not develop a systematic theory about the school institution, his works provide valuable insights for reflecting on the school as a formative space. The research is primarily grounded in three key texts: Emile, or On Education, Economy (Moral and Political), and Considerations on the Government of Poland and on Its Proposed Reform, in which it is possible to identify elements that point toward an alternative school model oriented to the moral and civic formation of the individual
Práticas da gestão do conhecimento como contributo para a geração da inovação nas micro e pequenas empresas da região de Bauru/SP
(Universidade Federal de São Carlos, 2025-05-28)
Tomaz, Washington Luiz
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Hoffmann, Wanda Aparecida Machado
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https://lattes.cnpq.br/7609135667093837
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https://orcid.org/0000-0002-1359-1802
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https://lattes.cnpq.br/9980743156117658
This study addresses the issue of knowledge management in micro and small enterprises (MSEs, English acronym for ME/EPP) in the technology and marketing sectors with focus on knowledge management practices. Information, as a fundamental input in the organizational context, gains importance as it is transformed into knowledge, enabling the emergence of innovations. In this sense, knowledge becomes a strategic resource, essential for decision-making and business sustainability. Knowledge Management and its practices thus present themselves as strategic tools to meet the growing demands for innovation and competitive-ness in the current market scenario. Accordingly, the theoretical foundation is based on dis-cussions around the following themes: organizational knowledge, knowledge management and its practices, organizational innovation, and micro and small enterprises (MSEs), with the aim of achieving the main goal of this research — identifying the contribution of knowledge management practices to innovation-related processes in MSEs in the Bauru/SP region. Through field research, three MSEs in the Bauru/SP region were interviewed. Using the Con-tent Analysis method, the study assessed the importance of knowledge management prac-tices in the organizational environment and their contribution to the generation and promotion of innovation. According to the research data, around 10 (ten) out of the 17 (seventeen) listed knowledge management practices are fully utilized by the MSEs, accounting for 58% of the total. Additionally, it was found that all the knowledge management practices contributed to some type of innovation within the surveyed companies. Therefore, the results indicate that the surveyed companies recognize the importance of knowledge management practices, even if some are not implemented due to a lack of awareness or other reasons. The findings also highlight the improvements being made to organizational environments to better leverage these benefits. Nevertheless, it is understood that by employing knowledge management practices — to varying degrees — companies are contributing to the generation and promo-tion of innovation within MSEs.
'Es preciso imaginar la red de micorrizas que se encuentra bajo tierra'. A caça de trufas negras (Tuber melanosporum) no Chile ou: como acessar um mundo que nos é inacessível?
(Universidade Federal de São Carlos, 2025-05-28)
Fanaro, Luisa Amador
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Vander Velden, Felipe Ferreira
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https://lattes.cnpq.br/7289231173735671
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https://orcid.org/0000-0002-5684-1250
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https://lattes.cnpq.br/8167351407012319
Esta tesis es el resultado de una investigación de campo dirigida a investigar las relaciones entre humanos y otros-que-humanos en el cultivo de trufas negras (Tuber melanosporum) en Chile. Allí, la truficultura se remonta a principios de la década de 2000, cuando se importaron desde España técnicas, conocimientos y el propio hongo con el objetivo de establecer las primeras plantaciones truferas de Sudamérica. Hoy en día, ya sea en los bosques europeos o en los huertos cultivados alrededor del mundo, la caza de trufas es una faena llevada a cabo por perros y humanos que depende de la co-constitución de una relación de cooperación entre ambos. Adoptando una perspectiva material-semiótica, la etnografía se centró en los diferentes encuentros entre perros, humanos y trufas, desde la preparación de los animales hasta la caza, o cosecha, del diamante negro de la gastronomía. Sostengo que la caza de trufas en ese contexto debe analizarse desde el punto de vista del trabajo humano-animal, o trabajo con animales, y que su éxito deriva del hecho de que humanos y perros operen siempre dentro de un régimen laboral. También sugiero que es a través del perro que se puede revelar lo que está oculto, escondido bajo tierra – son los animales los que, al fin y al cabo, nos permiten acceder a un mundo que nos resulta inaccesible – y que esta práctica puede servir para repensar y ampliar el propio concepto de caza y lo que es o puede ser el acto de cazar.
Síntese e caracterização da perovskita LaNiO₃ dopada com Ir e Ru e visando a exsolução para aplicação em reação de evolução de oxigênio
(Universidade Federal de São Carlos, 2025-05-28)
Amaral, Matheus Renan Belphman do
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Leite, Edson Roberto
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https://lattes.cnpq.br/1025598529469393
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https://lattes.cnpq.br/8487045733623981
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https://orcid.org/0000-0002-9452-5048
The growing concern over the use of renewable and efficient energy sources to replace fossil fuels and mitigate environmental problems in pursuit of a sustainable future is a widely discussed topic. Green hydrogen has emerged as a viable alternative to fossil fuels, as it is a clean, renewable, and energy-efficient resource with potential applications in the energy sector and across various industries. It can be produced through water electrolysis — a process that uses renewable energy to split water molecules and generate hydrogen — making it an environmentally friendly method. The search for new functional materials that combine high stability and efficiency with reasonable cost is essential for advancing renewable energy technologies. Among these, perovskite-type oxides stand out as an important class of materials due to their favorable electronic properties and potential for application in renewable energy systems, particularly in the oxygen evolution reaction (OER), which is a critical step in water electrolysis for green hydrogen production. The perovskite LaNiO₃ is considered a promising candidate for OER applications; however, it presents some instability at the Ni³⁺ active site — a limitation that can be mitigated through targeted doping. Doping and the exsolution of nanoparticles have proven to be effective strategies for stabilizing perovskite structures and enhancing their electrocatalytic activity. This study aims to investigate the electrocatalytic properties of the LaNi₁₋ₓIrₓO₃ and LaNi₁₋ₓRuₓO₃ perovskite series, examining the effects of incorporating Ir⁴⁺ and Ru⁴⁺, as well as the conditions required to promote their exsolution and their impact on OER performance. The perovskite powders were synthesized using the simultaneous precipitation method, followed by a calcination step in an O₂ atmosphere, and then subjected to a thermal treatment in a reducing 5% H₂/N₂ atmosphere to induce the exsolution of Ir and Ru nanoparticles. The samples were characterized in terms of their structural, morphological, and electrochemical properties.
O que brota das ruínas: o processo de ambientalização dos conflitos agrários em Alagoas
(Universidade Federal de São Carlos, 2025-05-29)
Lima, Weldja Marques da Silva
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Martins, Rodrigo Constante
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https://lattes.cnpq.br/6617183095074852
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https://lattes.cnpq.br/6440521092135747
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https://orcid.org/0000-0002-0192-3144
This research examines the processes of environmentalization present in agrarian conflicts in Alagoas, with an emphasis on disputes between the sugar-alcohol sector and the Landless Rural Workers’ Movement (MST). The Zona da Mata region of Alagoas, characterized by the concentration of sugarcane monoculture and a significant number of land disputes, constitutes the main spatial focus of the investigation. The study seeks to understand how environmental issues have been appropriated and reinterpreted by these actors in the construction of their narratives and political strategies. Methodologically, the research adopts a qualitative approach, based on a literature review, secondary data analysis, quantitative and fieldwork. The specific objectives include: a) identifying and relating the historical formation of the sugarcane sector and the MST in Alagoas to environmental issues; b) analyzing the socio-environmental conflicts involving both groups; c) examining the discursive and marketing strategies employed by both the sugar-alcohol sector and the MST in the environmental debate; d) understanding the social and political motivations behind investments in agribusiness and social movements. By exploring these dynamics, the research contributes to the understanding of territorial and symbolic dispute mechanisms that shape contemporary agrarian conflicts, highlighting the role of environmental issues in the reconfiguration of these disputes. The phenomenon of the environmentalization of agrarian conflicts is understood as a dynamic and multifaceted process. This thesis contributes to the field by demonstrating how environmental issues have become a space of political dispute between antagonistic social classes. The main contribution lies in showing that environmentalization is not merely a discursive phenomenon but a mechanism for legitimizing different interests within the agrarian context. This process allows for an understanding of how class conflict is updated within the environmental agenda and how different actors appropriate this discourse to justify their actions.
Zora Neale Hurston entre espaços de experiência e horizontes de expectativas: ou a trajetória de uma escritora e intelectual negra do/no século XX
(Universidade Federal de São Carlos, 2025-05-29)
Melo, Carolina Nascimento de
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Silvério, Valter Roberto
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https://lattes.cnpq.br/9421231847055027
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https://orcid.org/0000-0003-1715-4535
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https://lattes.cnpq.br/6388273288566422
This dissertation explores the multifaceted trajectory of Zora Neale Hurston, an American Black writer, anthropologist, and intellectual active between the 19th and 20th centuries. The study examines the intricate articulations among culture, race, and gender within a historical context where race largely dictated public, academic, and cultural discourse in the United States. The research posits that culture, more than race, should be understood as the central stage for symbolic disputes and the possibilities for creative agency among Black populations. Its impacts are observable both in their daily lives and in the historical changes they spearheaded. To achieve this, utilizing the concepts of articulation, space of experience, and horizon of expectations, the work investigates how Hurston, through her writing and academic-cultural engagement, managed to challenge hegemonic paradigms and inaugurate literary and political genealogies that resonate with contemporary and global Black intellectual thought. The methodological foundation of the research is structured around three main approaches: the use of (con)textual interludes as a narrative and analytical strategy; the application of the circuit of culture as a lens for observing the contingencies of circumstances that allowed her a distinct role in her socio-historical context; and the African diaspora as a theoretical and political key for understanding practices of being and existing in the world that differed from those delimited by colonialist systems. Hurston's collection at the University of Florida served as a primary source, enabling the retrieval of memories, documents, and productions that, while narrating a life, also highlight the paths and the creation of other ways of existing and signifying the world.
Efeitos da heterogeneidade da dívida sobre a eficiência do investimento
(Universidade Federal de São Carlos, 2025-05-29)
Sousa, Liduina Bezerra de
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Carvalho, Flávio Leonel de
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https://lattes.cnpq.br/9615144436796386
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https://orcid.org/0000-0002-8488-9382
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https://lattes.cnpq.br/9583077863643515
Decisions regarding financing and investment are essential for the financial performance of companies. These decisions can be analyzed in a specific way in order to improve extant analyses over financing and investment choices of firms. A relevant aspect of financing decisions refers to the option of firms to have a debt structure with lower or greater diversity of different types of debt, altering the degree of heterogeneity of the debt structure. With regard to investment decisions, understanding the determinants of efficient investment decisions is fundamental, since inefficient decision-making has an impact on the firm value. Given the scarcity of studies linking these two specific approaches, this research investigates the effects of debt heterogeneity on investment efficiency. The methodology used is econometric analysis with multiple linear regression with panel data. The sample includes non-financial companies listed on NASDAQ and NYSE, the two largest stock exchanges in terms of trading volume. The selected period covers the years between 2017 and 2022. The results indicate that a diversified debt structure is associated with greater investment efficiency. Additional tests reveal that the positive relationship between debt structure diversity and investment efficiency remains for companies with low bankruptcy costs and also in the period following the COVID-19 pandemic. The results indicate that borrowing different types of debt contributes to greater efficiency on investment decisions of companies due to a balance provided by the costs and benefits of these loans. There is evidence that one of the advantages brought about by a greater degree of debt heterogeneity for investment efficiency is the reduction in monitoring costs incurred by creditors. The conclusion of this study is that debt diversification is beneficial for investment decisions of firms, being a significant choice to deter firms from overinvestment or underinvestment.
Usabilidade e recomendabilidade de um site interativo visando promover mudanças comportamentais em usuários de computador
(Universidade Federal de São Carlos, 2025-05-29)
Giorgette Filho, Evandro Carlos
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Sato, Tatiana de Oliveira
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https://lattes.cnpq.br/3456494998257229
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https://orcid.org/0000-0001-8797-8981
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https://lattes.cnpq.br/8547943266634133
Introduction: The growth in the use of technology has led workers to use computers for long periods of time, both at work and leisure time. Prolonged computer use is associated with a sedentary lifestyle. Sedentary behavior is a risk factor for several health problems, and changing this behavior can be promoted through technology. Objective: To test the usability of an interactive website (Habitus) with the aim of promoting behavioral changes in computer users. Methods: Health experts evaluated the content of the Habitus website blog. Computer experts were invited to perform a heuristic evaluation divided into three stages (pre-evaluation, evaluation, and session with evaluators and developers). Subsequently, computer users, graduate and undergraduate students were invited to participate in the study through social networks and by email. Participants completed an initial questionnaire containing sociodemographic data, lifestyle habits, and musculoskeletal symptoms. A link to access the Habitus application was made available so that participants could use the website. After one month, a feedback and recommendation questionnaire was sent regarding the usability of the website. Results: Eight health experts reviewed the content of the Habitus blog. Three evaluators performed a heuristic evaluation of the Habitus website and changes were made. Forty computer users evaluated the website for one month. The usability score obtained was 86.94 and users indicated a 35% chance of recommending the website to colleagues. Conclusion: the Habitus website has excellent usability and is well received by users, but there is potential for improvements to increase customer satisfaction and usage.
Comercialização de alimentos: convergências entre agroecologia e economia solidária
(Universidade Federal de São Carlos, 2025-05-30)
Poncio, Aline
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Marjotta-Maistro, Marta Cristina
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https://lattes.cnpq.br/3987280258617095
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Montebello, Adriana Estela Sanjuan
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https://lattes.cnpq.br/4326971138357942
Family farming is extremely relevant and strategic for Brazil, playing a fundamental role in food production and local development. In recent years, initiatives aimed at expanding its autonomy and presence in markets have been strengthened through the creation of alternative forms of commercialization. Increasingly, farmers are developing alternative approaches to market food, while at the same time organizations are emerging that seek new forms of consumption and prioritize solidarity-based relationships. The commercialization of food using principles of solidarity economy arises as an alternative to conventional markets, seeking a more equitable and fair socioeconomic relationship among farmers, intermediaries, and consumers. This research aimed to understand how solidarity economy has been studied in different agricultural contexts through bibliometric analysis and, through a case study, to present the incubation process and the operation of a market that applies solidarity economy principles in food commercialization and organizational structure, which may serve as a model and alternative in different localities.
Abordagens de aprendizado de máquina e redes complexas na classificação de transtornos mentais
(Universidade Federal de São Carlos, 2025-05-30)
Sallum, Loriz Francisco
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Alves, Caroline Lourenço
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https://lattes.cnpq.br/2509241559871646
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Rodrigues, Francisco Aparecido
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https://lattes.cnpq.br/2153014839354888
Complex network science has emerged as a powerful tool for studying the structural and functional organization of the brain under normal conditions and in pathological contexts. In recent years, network-based approaches have been widely used to understand how mental and neurodevelopmental disorders influence brain organization and alter its functionality. The integration of graph theory, functional neuroimaging techniques, and computational methods enables the reconstruction of brain networks and contributes to understanding the impacts of various disorders at the individual level. Moreover, advances in automated diagnosis using machine learning have shown promising results in predicting and characterizing a range of disorders based on the analysis of functional connectivity obtained from time series of brain activity. This project aims to classify different mental disorders through the reconstruction of complex networks from time series extracted from neuroimaging data. The goal is to assess which connectivity metric is most suitable for reconstructing the brain network topology associated with each mental disorder, as well as the one that achieves the best classification performance. Machine learning models were used to analyze functional connectivity matrices in order to characterize the brain topology associated with each condition and to identify disorder-specific connectivity patterns. For major depressive disorder (MDD), Spearman correlation was the most suitable metric for reconstructing brain networks. The results suggest that alterations in connectivity are related to deficits in attention, memory, and decision-making. For autism spectrum disorder (ASD) and attention-deficit hyperactivity disorder (ADHD), transfer entropy was used to build the connectivity matrix, revealing altered patterns in brain regions associated with attention and impulse control in ADHD, and impairments in social and cognitive areas in ASD. Connectivity patterns were also analyzed to understand the progression of Parkinson’s disease (PD). In its early stages, the patterns resembled those of healthy individuals, while in later stages, a reduction in synchronization between brain regions and disease progression was observed. Therefore, the findings of this study contribute to more accurate diagnoses and to the development of personalized intervention strategies, promoting advances in the understanding and treatment of these conditions.
Formação e consultoria colaborativa escolar para professores especializados de alunos com Transtorno do Espectro Autista
(Universidade Federal de São Carlos, 2025-05-30)
Pereira, Amanda Cristina dos Santos
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Domeniconi, Camila
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https://lattes.cnpq.br/9684535663947328
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https://orcid.org/0000-0003-0486-3543
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https://lattes.cnpq.br/0951106943534543
Considering the challenges in the schooling of students with Autism Spectrum Disorder (ASD) reported in the Brazilian scientific literature, the present study aimed to investigate the effects of teacher training procedures for educators working in inclusive regular education settings, across two separate studies. Study 1 aimed to design, implement, and evaluate the effects of an online, lecture-based training program for participants regarding basic theoretical knowledge of Behavior Analysis, specifically related to the management of challenging behaviors in students with ASD. An A-B-A experimental design was employed. The dependent variable was the participants' performance on theoretical questions about managing challenging behavior, while the independent variable was the training delivered by the researcher. Five teachers from a municipal school district in the interior of São Paulo state participated in this study. The data collection procedure comprised four stages conducted online and synchronously. The results indicated that the training increased participants’ theoretical repertoire and stimulated reflection on their educational practices, leading them to consider evidence-based practices grounded in Applied Behavior Analysis (ABA). Study 2 aimed to evaluate the effects of a collaborative consultation on the development of documents related to the schooling of students with ASD, focusing on ABA-based practices within the regular school context. The specific objectives were: (a) to identify challenges in implementing the collaborative consultation for intervention planning through the development of the following documents: Assessment Report, Individualized Education Plan (IEP), and Challenging Behavior Management Plan in the School Context; and (b) to assess participants’ perceptions regarding the importance and feasibility of implementing these documents in their school settings. This was a collaborative research study, involving three teachers. The dependent variable was the behavior of one participant in the development of the Assessment Report, IEP, and Challenging Behavior Management Plan for their students, and the independent variable was the collaborative consultation with the researcher. The data collection procedure included nine stages, and the consultation sessions were conducted online and synchronously. The results showed that the participant demonstrated an increased repertoire of target behaviors related to the development of each document. Additionally, social validity was established through the other participants’ positive evaluations of the importance and feasibility of implementing the documents in school settings. Therefore, it can be concluded that both studies—teacher training on theoretical foundations and collaborative consultation for teachers of students with ASD in regular education—can be effective services for fostering reflection and improving pedagogical practices. However, further research is needed to develop and validate procedures and outcomes, improve working conditions for teachers, and promote legislation that encompasses evidence-based practice in education.
Meta-análise em rede na comparação de anticoagulantes para tratamento de tromboembolia venosa associada ao câncer
(Universidade Federal de São Carlos, 2025-05-30)
Silva, Fernanda Borim da
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Zuanetti, Daiane Aparecida
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https://lattes.cnpq.br/8352484284929824
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https://orcid.org/0000-0003-1591-959X
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https://lattes.cnpq.br/3854402882770424
Cancer-associated venous thromboembolism (CAVTE) is a common complication in oncology patients and is associated with a high risk of morbidity and mortality. Several anticoagulants are used for its treatment; however, the lack of direct comparisons among all available therapeutic options makes the optimal clinical choice challenging. In this context, this study conducted a network meta-analysis using a Bayesian hierarchical approach to compare the efficacy and safety of the anticoagulants Dalteparin, Apixaban, Rivaroxaban, and Edoxaban, integrating both direct and indirect evidence from six randomized clinical trials. The modeling was carried out using a random-effects binomial framework and Monte Carlo Markov Chain (MCMC) algorithms implemented in the R software. The results indicate that Apixaban performs best in terms of efficacy, while Dalteparin shows a superior safety profile, especially concerning non-major clinically relevant bleeding events. The findings reinforce the value of network meta-analysis as a decision-support tool in clinical contexts involving multiple therapeutic alternatives.