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Modelagem de dados de sobrevivência induzida por fragilidade discreta via versão hurdle da distribuição série de potência zero-modificada
(Universidade Federal de São Carlos, 2025-08-11)
Molina, Katy Rocio Cruz
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Tomazella, Vera Lucia Damasceno
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https://lattes.cnpq.br/8870556978317000
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https://lattes.cnpq.br/8820054149005701
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https://orcid.org/0000-0002-2614-2336
Modeling unobserved heterogeneity in survival analysis traditionally relies on frailty models. However, their conventional architecture, based on continuous distributions, is often restrictive in contexts exhibiting a structural cure fraction. To address this limitation, this thesis proposes an innovative discrete frailty model based on the Hurdle Zero-Modified Generalized Poisson (HZMGP) distribution. The proposed model is distinguished by a multifaceted architecture that provides three key advantages: its discrete nature offers a natural representation of cured individuals (zero frailty); its zero-modification structure flexibly accommodates diverse patterns of zeros (inflated, deflated, or truncated); and its inclusion of a dispersion parameter captures variability arising from latent risk factors. Inference for the model was developed and validated under both frequentist and Bayesian paradigms. Extensive simulation studies in both frameworks confirmed the estimators' asymptotic properties and, crucially, demonstrated the model's flexibility to accurately capture scenarios both with and without a cure fraction. The model's utility and versatility are ultimately demonstrated through its application to two contrasting oncology datasets, validating its relevance for clinical practice. Furthermore, the Bayesian framework yielded two of the thesis's most significant contributions: a probabilistic classification rule for individual prognostic stratification, and a novel conceptual interpretation of the dispersion parameter as a statistical proxy for unobserved biological heterogeneity. These advances represent a significant contribution to the analysis of complex survival data.
Towards a UX data-centric approach: providing tools to support software development
(Universidade Federal de São Carlos, 2025-08-11)
Macedo, Maylon Pires
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Zaina, Luciana Aparecida Martinez
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https://lattes.cnpq.br/0192085115595443
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https://orcid.org/0000-0002-1736-544X
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https://lattes.cnpq.br/0905286355746275
The frequently collected data regarding user interaction with software (i.e., UX data) holds potential to enhance User Experience (UX), which encompasses users' emotional, practical, and perceived value interactions with products. However, a challenge exists between the collection of UX data and its effective analysis. Software practitioners frequently encounter difficulties in selecting relevant data and applying appropriate techniques to gain insights for software improvement. The field of Information Visualization (InfoVis) offers approaches to assist users in analyzing emerging information from data. While initial efforts explored how InfoVis principles could be applied, this research revealed a more fundamental problem. A Grey Literature Review on UX data not only identified diverse formats, definitions, and suggested visual representations but, exposed a pervasive lack of formal UX data definitions in practice. Two initial exploratory studies further reinforced these challenges, demonstrating that practitioners struggled to derive insights from unstructured UX data without a clear conceptual foundation. Building upon these findings, this research strategically pivoted its focus to address the core issue for effective UX data analysis. The central artifact developed is a UX data taxonomy, designed to organize and clarify UX data understanding by categorizing objectives, purposes, and data characteristics. This taxonomy itself represents a theoretical contribution, providing a structured model for the UX data domain. To ensure its practical utility and accessibility, this taxonomy was operationalized through two distinct tools: an interactive web-based system for exploration and a Generative AI (GenAI) RAG (Retrieval-Augmented Generation) chat tool for natural language interaction. The utility and acceptance of this taxonomy and its related tools were then empirically validated with software professionals. Finally, the research also explored emerging opportunities for UX data analysis, particularly concerning the role of GenAI, assessing how these advancements intersect with the need for structured data understanding, thus providing theoretical insights into the evolving landscape of UX data analysis. This thesis provides both practical tools to empower software professionals in leveraging UX data for enhancing interactive system design, and lays a theoretical foundation for understanding and working with UX data.
Habilidades linguística, cognitiva, sociocultural e socioemocional no currículo paulista de língua inglesa para os anos iniciais do ensino fundamental: uma análise crítico-reflexiva à luz de dimensões do letramento
(Universidade Federal de São Carlos, 2025-08-11)
Buto, Marcia Yoshiko
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Borges, Elaine Ferreira do Vale
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https://lattes.cnpq.br/8872819626199594
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https://orcid.org/0000-0001-8310-3539
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https://lattes.cnpq.br/3866551579245457
This research offers a critical analysis of the São Paulo State Curriculum for English Language Teaching in the Early Years of Elementary Education (CP-LIAI), understanding it not as a neutral document but as a political and discursive artifact. Based on a qualitative and interpretative approach within the field of Critical Applied Linguistics, the study examines how the skills proposed for the 4th and 5th grades articulate, or fail to articulate, linguistic, cognitive, sociocultural, and socioemotional dimensions of English language learning, in light of theories of critical literacy and multiliteracies. The analysis revealed that the CP-LIAI presents some progressive elements, such as the emphasis on orality and ludic engagement, but remains largely tied to prescriptive and technicist logic. Inclusive pedagogical intentions often coexist with formulations focused on memorization and the isolated reproduction of linguistic structures, contradicting the principles of a situated, ethical, and plural language education. The lack of child-centered listening in the construction of the curriculum further limits its transformative potential. The study also emphasizes the central role of the teacher: it is through critical reading, pedagogical mediation, and daily reinvention that the curriculum can be re-signified. However, this requires adequate working conditions and public policies that promote continuous and critical teacher education. The findings suggest the need to review and expand the CP-LIAI based on principles of social justice, inclusion, and recognition of children’s voices. The curriculum, as a space of dispute, must be reinterpreted as a site for listening, creation, and transformation. English language education in early schooling should recognize the child as an epistemic subject, a meaning-maker, and an active participant in real and meaningful discursive practices.
Representação formal de significado: o caso dos tweets do mercado financeiro
(Universidade Federal de São Carlos, 2025-08-11)
Ceregatto, Gabriel
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Di Felippo, Ariani
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https://lattes.cnpq.br/8648412103197455
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https://lattes.cnpq.br/8176589107861953
Semantic annotation of corpora plays a crucial role in the development of Natural Language Processing (NLP) tools. In the case of user generated content (UGC) corpora composed of tweets whose language is predominantly informal semantic annotations typically focus on lexical aspects such as named entities, emotion, or polarity. In this study, we investigated the sentential semantic representation of Portuguese language financial market tweets via the Abstract Meaning Representation (AMR) framework, under the hypothesis that syntactic information can aid such representations. To this end, we annotated the DANTEStocks corpus, the first tweebank with grammatical annotation according to the Universal Dependencies (UD) formalism, covering a subset of 1,128 of the 4,048 tweets (i.e. 30% of the total). The AMR annotation followed a hybrid methodology, comprising a manual phase to establish guidelines and reference models, and a semiautomatic phase in which manually curated corrections were applied to graphs produced by a large language model. This process confirmed our hypothesis that UD syntactic dependencies facilitate the construction of AMR graphs, particularly in identifying subgraphs and relations among concepts. Additional contributions include: (i) the development and validation of AMR annotation guidelines for phenomena specific to Portuguese, UGC, and the financial domain; (ii) the proposal of labels for three types of financial domain entities (URLs, tickers, and users); and (iii) the introduction of a frameset for the VerboBrasil repository covering the financial verb repicar. The primary challenge encountered was interpreting tweets for AMR graph construction, given their fragmentation, truncation, contextual dependence, and specialized vocabulary necessitating continuous expert consultation and external financial-domain resources. Nevertheless, even with a relatively small validation set, an inter-annotator F-score of 89% indicates that the AMR-annotated portion of DANTEStocks is a reliable resource for pioneering research on AMR parsing of tweets in NLP and for guiding the annotation of the remaining corpus.
A comunicação digital nos territórios rurais: um estudo do canal “O Extensionista” no YouTube
(Universidade Federal de São Carlos, 2025-08-11)
Serafin, Renato de Melo
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Redin, Ezequiel
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https://lattes.cnpq.br/4594328596786231
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https://orcid.org/0000-0002-3750-8225
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Zuin, Luís Fernando Soares
This original study aims to analyze data from lecture-style videos produced by the "O Extensionista" YouTube channel. The aim was to understand how digital platforms are transforming teaching methodologies and communication in rural areas. In the field of STS, this research demonstrates how technologies and social practices intertwine in rural extension. Dialogical communication in ATER Digital values local knowledge and concrete experiences, while engagement data highlights the importance of formats that respect cultural plurality and rural protagonism, promoting more inclusive and collective extension practices. The guiding question of the study was to understand how videos on the "O Extensionista" YouTube channel, as an ATER Digital initiative, promote engagement and contribute to the innovation and improvement of rural extension practices in Brazil. Furthermore, we sought to answer which attributes of the channel's videos influence public participation and engagement in digital rural extension initiatives. And how do the data on views, likes, and interactions on the channel's videos reflect the effectiveness of Digital ATER initiatives? The research is configured as an exploratory and descriptive investigation. In turn, the collected data were schematized and organized for quantitative analysis. The channel "O Extensionista" has over 96,000 subscribers, has published over 6,800 videos, and has received over 34 million views. The sample for analysis comprises 75 videos generated on the channel from weekly live streams discussing topics related to digital ATER, research, and rural extension worker training. The videos in the sample under investigation have 21,967 views, 1,880 likes, and 1,893 interactions in the chat as their main metrics. The data was organized and categorized by speaker profile, gender, time period, talk/live stream duration, and language. The analyses were constructed using descriptive statistical parameters such as arithmetic mean, standard deviation and coefficient of variation. The most discussed topics were "Scenarios: Challenges and Opportunities in ATER (24%)" and "Technology and Innovation in Rural Extension (22.67%)". The topic with the highest average number of views was "Public Policies, Planning and Regulation of ATER (374)". The most common speaker profile is characterized by rural extensionists and males.
Desafios da reestruturação do ensino médio no Estado do Amazonas
(Universidade Federal de São Carlos, 2025-08-11)
Oriente, Silvana Barreto
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Rodrigues, Tatiane Cosentino
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https://lattes.cnpq.br/8361431964064731
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https://orcid.org/0000-0001-7957-0070
;
Kambeba
This research investigates the challenges of restructuring secondary education in the state of Amazonas, with the general aim of analyzing the tensions present in the process of implementing the policy, based on the perceptions of educators and managers from different regions of the state. In addition to the difficulties inherent to regional specificities, such as geographical distance and limited access, the research highlights the internal, ethnic and racial diversity of the Amazonian territory as an aspect that is little considered in the formulation and implementation of educational policy. The research is driven by the following question: how can we guide the implementation of a public education policy that takes territorial diversity as a reference and starting point? The thesis was built along three main lines: (1) a bibliographical survey of the latest high school reforms in Brazil; (2) the characterization and analysis of the proposal to restructure high school in the state of Amazonas; and (3) the comparison between this proposal and the perceptions of teachers and managers in the various regions of the state. Through these paths, the research seeks to contribute to reflection on educational policies that dialogue with the socio-cultural contexts in which they are implemented, recognizing diversity as a structuring element of educational provision. The methodological choices are based on post-critical studies in education, as proposed by Meyer and Paraíso (2021). Based on a qualitative approach, it combines documentary analysis with a bibliographical review, followed by dense field research, carried out in at least one municipality in each channel of the main rivers in the Amazon, through re-signified narrative interviews (Andrade, 2012) with educators who work in secondary education in the state of Amazonas.The theoretical framework that underpins the research is based on approaches that dialog with post-critical theories in education, such as cultural, decolonial and ethnic-racial studies.The data analysis was organized into five main axes: general infrastructure; pedagogical and teaching structure; teacher training; student protagonism and indigenous education.The main findings indicate that the restructuring of secondary education in Amazonas has taken on worrying contours due to the profound territorial, social and cultural inequalities that mark the interior of the Amazon region, which were not considered at the time of implementation of this important public policy.
Assessing the adoption of digital technologies by brazilian beef cattle farmers
(Universidade Federal de São Carlos, 2025-08-11)
David, Leticia Caroline da Silva
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Vinholis, Marcela de Mello Brandão
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https://lattes.cnpq.br/5730999136286305
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https://orcid.org/0000-0003-3033-0230
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Carrer, Marcelo José
Beef cattle production plays a pivotal role in global food systems and national economies. Digital technologies offer substantial opportunities to enhance operational management, automate processes, and optimize input use. This dissertation pursues two complementary objectives: (i) to identify the main factors associated with the adoption of digital technologies by feedlot beef cattle producers; and (ii) to examine how, and to what extent, digitalization, human capabilities, marketing capabilities, and supply chain integration are linked to the technical efficiency of Brazilian feedlots. A systematic literature review was conducted to map the global landscape of digital technology adoption in beef and dairy cattle production and to identify potential determinants. Empirically, Multiple Correspondence Analysis and Stochastic Frontier Models were applied to data collected from 238 Brazilian feedlot producers (359 observations) between 2020 and 2023. Results show that dairy producers exhibit higher adoption rates of data acquisition and communication technologies as well as automation, control, and robotics systems, whereas beef producers complement these with information system technologies. Technology adoption is associated with producer characteristics (age, education, access to consultancy) and production features (scale, labor, risk management practices, custom feeding services, and slaughterhouse bonuses). Adoption of digital management software, automated feed distribution sensors, and formal contracting is positively linked to higher technical efficiency. These findings provide empirical evidence to guide policy design and support the diffusion of digital technologies in livestock systems.
Grammar-based Neuroevolution of Fully Convolutional Networks
(Universidade Federal de São Carlos, 2025-08-12)
Miranda, Thiago Zafalon
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Cerri, Ricardo
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https://lattes.cnpq.br/6266519868438512
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https://lattes.cnpq.br/8405817043726890
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Cerri, Ricardo
The design of complex and deep neural networks is often performed by identifying and combining building blocks and progressively selecting the most promising combination. Neuroevolution automates this process by employing evolutionary algorithms to guide the search. Within this field, grammar-based evolutionary algorithms have been demonstrated to be powerful tools to describe and thus encode complex neural architectures effectively. In this context, this research proposes a novel grammar-based multi-objective neuroevolutionary approach for generating fully convolutional networks. The proposed method, named Multi-Objective gRammatical Evolution for FUlly convolutional Networks (MOREFUN), includes a new efficient way to encode skip-connections, facilitating the description of complex search spaces and the injection of domain knowledge in the search procedure, the generation of fully convolutional networks upsampling of lower-resolution inputs in multi-input layers, the usage of multi-objective fitness, and the inclusion of data augmentation and optimizer settings in the grammar. The best networks found by the algorithm outperformed those generated by previous grammar-based evolutionary algorithms, achieving 90% accuracy on CIFAR-10 without using transfer learning, ensembles, or test-time data augmentation, while having a relatively small number of parameters.
A produção de vida cativada em cartas
(Universidade Federal de São Carlos, 2025-08-12)
Araújo, Sofia Pfeiffer
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Silva, Carla Regina
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https://lattes.cnpq.br/6417501858864106
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https://orcid.org/0000-0002-7079-8340
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https://lattes.cnpq.br/4534619095818553
The work presents the process of creation, organization, and analysis of the book "Letters to Mari – Poetics and Crossroads of Occupational Therapy as Life Production," organized as a formative, affective, and collective device dedicated to the trajectory and thot of Mariângela Quarentei. The research describes the construction of the book from its initial conception to the stages of invitation, receipt of texts, editing, layout, and finalization of the work, highlighting how each phase expresses the principles of Occupational Therapy as Life Production (OTLP). The study highlights the relevance of TOPV as a theoretical-methodological framework marked by singularity, creation, and the inseparability between life, practice, and human activity. Based on the analysis of the letters and artistic productions sent by invited authors, the work identifies central elements of the constitution of TOPV, its expansion into different professional territories, and the formative power of the encounters, affections, and ways of being that traverse this field. Furthermore, it highlights the tensions between this living and experimental framework and traditional academic structures, emphasizing the need to expand its presence in university training spaces. The study concludes that the book materializes a continuous gesture of memory, creation, and the production of life, reaffirming the ethical-aesthetic that sustains the practice of Occupational Therapy within this horizon and opening pathways for new investigations, practices, and shared experiences.
Simulação do processo de produção do metanol a partir da reação de hidrogenação do CO2 utilizando H2 verde proveniente da eletrólise e CO2 proveniente da absorção por Amina
(Universidade Federal de São Carlos, 2025-08-12)
Garcia, Eduardo Cotta
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Santos, João Batista Oliveira dos
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https://lattes.cnpq.br/0285313473901330
The excessive release of CO₂, a greenhouse gas, contributes to the rise in the planet’s average temperature, leading to significant environmental and economic impacts. Converting CO₂ into methanol through hydrogenation yielding renewable methanol, a fuel and an important feedstock in the chemical industry emerges as a promising alternative to reduce the concentration of this gas in the atmosphere. In this context, simulating both the renewable methanol production process and the main routes for obtaining the raw materials, CO₂ and H₂, provides valuable insights into the generation of this product. Therefore, this work aims to simulate in Aspen Plus version 14 the processes involved in renewable methanol formation via catalytic reaction, alkaline water electrolysis, and CO₂ absorption from greenhouse gas streams using monoethanolamine (MEA). These simulations demonstrated consistency with existing green methanol production facilities, such as those developed by the Icelandic company Carbon Recycling International (CRI), and allowed a comparison of the required amounts of CO₂ and water needed for such operations. In this way, a mass yield of 72.5% was obtained for carbon capture and a consumption of 2.25 tons of water in alkaline electrolysis per ton of methanol produced.
Efeitos de um programa de autocuidados sobre a síndrome de Burnout em professores do ensino fundamental
(Universidade Federal de São Carlos, 2025-08-12)
Soares, Caroline Fernanda
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Carmo, João dos Santos
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https://lattes.cnpq.br/1263046410329694
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https://lattes.cnpq.br/9068652218632978
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Kienen, Nádia
Burnout Syndrome is an occupational problem among teachers, related to continuous stressors that result in exhaustion. Self-care practices, such as breathing and relaxation, are effective interventions for stress prevention and reduction. Concurrently, the Programming of Conditions for Behavior Development (PCDC) is an efficient technology for teaching specific behaviors. The present study aimed to evaluate the contribution of applying a PCDC-based teaching program of relaxation and emotional self-control strategies to reduce the risks of Burnout Syndrome in teachers. Six elementary school teachers from a São Carlos State Public School participated, divided into an experimental group (n=3) and a control group (n=3). The pre-test included the Brazilian Burnout Scale (EBBurn), the WHOQOL-bref, the LIPP Stress Symptoms Inventory for Adults - Revised (ISSL-R), and a Self-Care Behaviors Questionnaire. The intervention, applied to the experimental group, was a 9-weekly session program, based on PCDC and Behavioral Skills Training (BST), covering relaxation techniques and other self-care practices. Post-test and follow-up (two months after the post-test) consisted of reapplying the same instruments. Results for the experimental group revealed significant reductions in mean Stress levels (69.9% decrease post-test and 51.8% at follow-up) and Burnout levels (23.7% decrease post-test and 22.2% at follow-up). Mean quality of life for this group increased (31% post-test and 27.5% at follow-up). The control group, in contrast, maintained stable levels across all instruments. Additionally, self-care behaviors in the experimental group showed a notable increase (86.6% post-test, with maintenance at follow-up), and the perception of positive consequences, like stress reduction, reinforced adherence. Findings support self-care studies in stress reduction and the effectiveness of PCDC-based programs for preventing and managing Burnout Syndrome in teachers.
Terapia ocupacional assistida por cães para crianças no TEA: enfoque em comportamentos sociais e componentes do engajamento
(Universidade Federal de São Carlos, 2025-08-12)
Freitas, Fernannda Victorya Moratori de
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Figueiredo, Mirela de Oliveira
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https://lattes.cnpq.br/3660487766535040
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https://lattes.cnpq.br/2727340432918059
Introduction: Occupational therapists worldwide have implemented Animal-Assisted Therapy (AAT), integrating dogs into the care of children on Autism Spectrum Disorder (ASD). Studies indicate that children on ASD have limitations in social and emotional behaviors, such as making eye contact and smiling, as well as in components of engagement, such as motivation and perseverance in carrying out activities. The lack of these skills impairs social interaction, communication, and occupational performance. Objective: To identify and describe changes in social and emotional behaviors, as well as in the components of engagement of children on ASD after participating in Canine-Assisted Occupational Therapy programs. Furthermore, it aims to describe the activities carried out with a focus on stimulating and developing these behaviors and components. Methodology: A collective case study method was used, using qualitative and quantitative document analysis before and after the intervention. The sample consisted of four boys, two three years old and two six years old, and their respective mothers. The mothers completed the Canadian Measure of Occupational Performance pre- and post-intervention, and recordings of five weekly sessions with each child were analyzed. For each session, the frequency of social and emotional behaviors and components of occupational performance and engagement were recorded on a checklist. Results: From the first session, the children demonstrated eye contact and smiles directed at the dog, which were extended to the therapist in subsequent sessions. As eye contact and smiles increased, they demonstrated increased engagement components (motivation and perseverance), despite functional performance difficulties (fine and gross motor coordination, balance, attention, problem-solving). They also demonstrated increased positive emotional and social skills, such as voluntarily touching the dog, talking to the dog, and staying closer to the dog, which also extended to the therapist. Conclusions: Based on the theory of biophilia, it is concluded that the child-dog bond in the therapeutic environment favored increased eye contact and smiling, which suggests the other changes observed in the interaction with the dog and the therapist, as well as in the components of occupational engagement. Future research is needed to validate eye contact and smiling as measures of evaluating the effectiveness of Canine-Assisted Occupational Therapy for children on ASD.
Programas de cooperação internacional em pesquisa: avaliação de efetividade e efeito concentrador
(Universidade Federal de São Carlos, 2025-08-13)
Ferreira, Pablo Gabriel
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Faria, Leandro Innocentini Lopes de
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https://lattes.cnpq.br/0767710394930118
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https://orcid.org/0000-0002-8369-1315
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https://lattes.cnpq.br/5820885003003705
In a context of globalization, academic, scientific and technological activity is largely organized in the form of global networks of researchers and research groups linked to universities and science & technology (S&T) institutes located in different parts of the world. In this highly transnationalized environment, belonging to global research networks is a condition for keeping up to date in terms of cutting-edge research and the frontier of scientific and technological activity. For this reason, universities, research institutes and S&T funding agencies encourage the establishment or deepening of international partnerships through cooperation programs. In view of this scenario, the present study aims to evaluate the effectiveness of international research cooperation programs and, in this aspect, to develop an evaluative methodology that can be applied, by extension, to various modalities of research funding. In order to fulfill the purpose of this thesis, a case study was carried out on bilateral research cooperation programs managed by the Brazilian Federal Agency for the Support and Evaluation of Graduate Education (Capes) between 2015 and 2020. A gradual multimethodological approach was applied, in which greater analytical rigor was conferred at each stage of the research, in order to gradually check the results obtained in the previous stage. The gradual multimethodological approach followed the following order: (i) simple before-and-after evaluation; (ii) creation of a control group; (iii) conducting a difference in difference (dif-in-dif) analysis between the treatment group and the control group; (iv) analysis of the increase in bilateral cooperation with the countries with specific agreements with Capes; (v) identification of the causal theory that underlies the cooperation programs; (vi) elaboration of multivariate linear regression models (etiological models) in order to verify the effectiveness of the programs; and, finally, (vii) the application of statistical matching techniques between the treatment group and the control group, in order to measure the causal effect of the cooperation programs. On the one hand, no evidence was found that the cooperation programs achieved their objectives satisfactorily, according to the selected indicators, especially because most of the resources are addressed to highly competitive and consolidated institutions from the point of view of international research partnerships. On the other hand, a Concentrating Effect was found in the grants of joint research projects that can accentuate the inequalities inherent to the National Graduate System (SNPG) in terms of international cooperation. This Concentrating Effect functions as a variant of the Matthew Effect or Cumulative Advantages. It can be said that cooperation programs operate more in maintaining the status quo than in increasing international collaborative research. In this regard, it is recommended that international cooperation policies in research be promoted by region, to be designed through specific calls for proposals, in order to take in account the regional, federative and institutional diversity of the country and to enhance scientific and technological development outside the main research producing centers.
Era uma vez... a prática social da contação de histórias com crianças hospitalizadas
(Universidade Federal de São Carlos, 2025-08-13)
Brito, Miriã Martins de
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Montrone, Aida Victoria Garcia
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https://lattes.cnpq.br/9011731777978672
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https://lattes.cnpq.br/8425431356929720
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https://orcid.org/0000-0001-8031-9705
No todo lo que se conoce ha pasado por laboratorios ni se ha escrito en papel. Por mucho tiempo y aún hoy la ciencia construida desde Europa ha querido hacernos creer que solo existe una forma correcta de saber. En su mirada, los conocimientos que nacen de los pueblos del sur: indígenas, afrodescendientes, populares o latinoamericanos han sido invalidados, invisibilizados y dejados de lado. Y, sin embargo, ellos siguen vivos, viajando de boca en boca, de abuela/o en nieta/o, de juego en juego, de gesto en gesto. Entre las muchas formas que tienen las comunidades tradicionales de cuidar sus saberes, una nos conmovió especialmente: la narración de historias con niñas y niños. Allí, sentados en ronda o al pie de una cama, las personas cuentan lo que saben, sobre plantas que curan, espíritus que protegen, juegos que enseñan, sueños que sanan. Y lo hacen no solo para enseñar, sino también para recordar quiénes son. Esta investigación nace desde ese lugar, desde el deseo de reconocer esos saberes de pueblos del sur como válidos, valiosos, vivos. Y también, desde la percepción de que contar historias es un acto de cuidado y memoria. En este estudio, desarrollado en el área de la Educación, nos propusimos mirar con atención qué ocurre cuando la narración de historias adentra en el Atendimiento Educacional Hospitalario (AEH). Porque estar hospitalizada/o no es fácil para quienes atraviesan la infancia con algún problema de salud, se interrumpen los juegos, las rutinas, los abrazos cotidianos, la escuela. Por eso quisimos acompañar con palabras, con narraciones de historias, con mundos imaginados, el tiempo difícil de la hospitalización. Nuestra intención fue comprender, investigar y también, cuidar, ofrecer un puente, una pausa, una chispa de alegría, y, posibilitar que cada niña y niño pueda (re)significar su vivencia en ese espacio muchas veces ajeno. Durante tres meses, con el aval del Comité de Ética e Investigación con Seres Humanos (parecer consubstanciado número 5.742.162), llevamos a cabo esta intervención, con narración de historias con niños y niñas atendidos en el Hospital Universitario (HU), vinculado a la Universidad Federal de São Carlos (UFSCar) y administrado por la Empresa Brasileña de Servicios Hospitalarios (EBSERH). Escuchamos, compartimos historias, registramos cada encuentro en diarios de campo, y dejamos que los datos nos hablasen. Así nacieron, a posteriori, dos grandes tejidos narrativos o categorías temáticas: “Entre pasillos, gestos y miradas: interacciones en la vida cotidiana de HU/UFSCar” y “Entre hadas y héroes: narración en AEH”. Al final del camino, queremos compartir lo que descubrimos: que contar historias no solo entretiene, también cuida, abraza, conecta, da sentido, crea comunidad. De la práctica social de la narración de historias florecerán procesos educativos tales como: cuidado, cariño, sensibilidad, cooperación, dialogicidad, juego, resistencia y trascendencia.
Entre maquiagens e costuras: as dramatizações do fazer-ser drag
(Universidade Federal de São Carlos, 2025-08-14)
Ribeiro, Vinícius dos Santos
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Barros, Mariana Luz Pessoa de
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https://lattes.cnpq.br/4830505244404566
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https://orcid.org/0000-0002-1662-2125
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https://lattes.cnpq.br/3878992500667156
Drag queens represent a form of artistic and political expression in which individuals dress and behave in a manner considered exaggerated and extravagant, allowing them to explore various aspects of gender identities by combining elements that are socially considered feminine, such as clothing, gestures, and makeup. In this sense, we can understand drag queens as a dramatization of gender identities (Butler, 2003), that is, as an artistic expression that explores the possibilities and limits of gender in society, bringing them into discussion. Based on this reflection, the main objective of this dissertation is to examine the construction of drag queen styles and identities in the television program RuPaul's Drag Race, an American reality show hosted by RuPaul and created by World of Wonder. Thus, we will analyze four participants in ten episodes of the reality show, taking into account their syncretism of languages, in search of understanding different ways of doing and being drag. Our intention is to contribute to the understanding of drag identities and also to reflections on gender identities, something little explored within discursive semiotics. Thus, based on discursive semiotics (Greimas; Courtés, 2008) and its current developments, we examine the episodes in order to describe the drag styles that are constructed in the program, especially based on the notions of aspectualization, as presented by Fiorin (1989, 2004), and also the notion of style proposed by Discini (2003; 2015). The research dialogues with gender studies, since, based on a perspective in which gender is taken as a performative production, drag queen identities are understood as a kind of staging of gender identities that are projected from their linguistic and discursive production, since drag does not correspond to a gender identity, but to its dramatization, as Butler (2003). In our analyses, we address the constitution of the identity of four participants in the program (Aquaria, Asia O'Hara, Yvie Oddly, and Dawn), created from their speech, clothing, and gestures, but also from the editing of the program and the speech of other drag queens, presenters, and judges. Our investigation led us to identify four distinct styles—bold, traditional, conceptual, and playful—projected by different ways of being and doing drag.
Sentidos e significados das operações de multiplicação e divisão com alunos dos anos iniciais: um estudo a partir de atividade orientadora de ensino
(Universidade Federal de São Carlos, 2025-08-14)
Guillen, Juliane Dias
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Sousa, Maria do Carmo de
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https://lattes.cnpq.br/6637658562543505
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https://orcid.org/0000-0002-5523-757X
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https://lattes.cnpq.br/1410181566951705
This study explored the meaning and significance students experience when teaching multiplication and division in schools. We used Historical-Cultural Theory as a foundation, with an emphasis on Activity Theory and Teaching Orientation Activity (TEA). The study was guided by the following question: What are the meanings and significance of multiplication and division concepts expressed by elementary school students? The research, related to the teaching and learning of mathematics, was developed in a school setting using a qualitative approach. Participants were third- and fourth-grade elementary school students from 2022 to 2023.The analysis instruments used were episodes and scenes recorded through filming of activities produced by the teacher and developed by the students, written records made by the students and the teacher as well. We based our theory on authors such as Boyer (1996), Caraça (1951), Eves (2004), Ifrah (2007), Kopnin (1978), Leontiev (1978), Moura (2004, 2010), Vygotsky (2005, 2009, 2010).To compile the information, we used the theoretical and methodological assumptions of ESL, where students actively participate in the proposed Learning Trigger Situations (LTS), seeking solutions to their respective problems. The exchange of letters between the character Emília and the students was what mobilized the students to solve the problems posed by Emília, and thus were able to experience, with due respect, part of the historical process of multiplication and division constituted by different human cultures.We argue that through SDA, we can foster students' expressions of sense and meaning, which can then be used to connect them to mathematical meanings. When we work through SDA, we can consider children's imagination, as sense and meaning can manifest in ways that enable students to form mathematical concepts. Working with multiplication and division from a non-linear perspective enabled students to develop the need and motivation to engage in the process of thinking about mathematical concepts meaningfully. We concluded that mathematics instruction, when guided by autonomy and dialogue, enables meaningful learning, in which students assign meaning and significance to concepts, transforming the classroom into a space for discovery and learning. In this sense, we hope that this study will inspire other teachers to develop practices that prioritize and value the strategies used by students in solving problem situations, favoring the manifestation of the senses and meanings of mathematical concepts in the school context.
Desenvolvimento inicial de plantas de milho em solo fertilizado com fosfatos e biofertilizante líquido
(Universidade Federal de São Carlos, 2025-08-14)
Carapeba, Gabriel Augusto Sgobi Ferreira
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Mariano, Eduardo Dal Ava
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https://lattes.cnpq.br/0465944663357275
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https://lattes.cnpq.br/2445268440666337
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Gazaffi, Rodrigo
The growing demand for phosphate fertilizers and the depletion of their non-renewable mineral sources pose crucial challenges to agricultural sustainability. Phosphorus (P) is vital for plant development, and biofertilizers containing P-solubilizing microorganisms are a promising alternative to optimize P availability in the soil and reduce dependence on mineral inputs. This study evaluated the influence of different P sources and a liquid biofertilizer on the growth and physiological parameters of corn (Zea mays) in a greenhouse. We analyzed plant height, shoot dry matter, chlorophyll content, and physiological indicators, including stomatal conductance, transpiration, photosystem II quantum efficiency, electron transport rate, and leaf temperature. The results showed that phosphates with higher solubility, such as Triple Superphosphate (TSP) and a Phosphate Mixture (PM), significantly promoted initial growth and biomass accumulation. In contrast, the biofertilizer had only a limited positive impact on plant height at the initial stage (12 days after emergence) and showed no significant effects on other variables or later development stages, nor did it exhibit synergy with natural rock phosphates (GAFSA and FNN). We conclude that soluble P sources are critical for establishing initial crop vigor. The effectiveness of the tested biofertilizer seems dependent on application conditions and plant stage, highlighting the need for future research on optimal doses and application strategies to unlock its full potential.
Análise de confiabilidade de sistemas reparáveis: abordagens para dados de tempo de falha, degradação e degradação acelerada
(Universidade Federal de São Carlos, 2025-08-14)
Portela, Adriane Caroline Teixeira
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Tomazella, Vera Lucia Damasceno
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https://lattes.cnpq.br/8870556978317000
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https://orcid.org/0000-0002-6780-2089
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https://lattes.cnpq.br/8177703084857092
Reliability analysis aims to understand and predict the behavior of systems over time, using both failure data and degradation data. In repairable systems, these two types of information are particularly relevant, as they allow one to characterize the evolution of failure risk and the impact of maintenance actions throughout the life cycle. Therefore, it is possible to develop more realistic models to support maintenance decisions and optimize operational costs, reflecting the actual conditions to which the systems are subjected. In this thesis, we present three statistical models focused on the analysis of repairable systems from different perspectives. Initially, we propose a frailty model for failure times in systems operating under minimal repair, accounting for unobserved heterogeneity among units. The failure intensity function follows a Power Law Process, while the frailty term is assumed to follow a non‑central Gamma distribution. Through simulation studies and applications to real datasets, we demonstrate that this approach yields more accurate estimates and reliability functions that are better adjusted to the variability among systems. Subsequently, we advance to models based on degradation trajectories, investigating processes in which the system condition deteriorates over time and can be partially restored by imperfect maintenance actions. We adopt the inverse Gaussian process associated with the order-one Arithmetic Reduction of Degradation ARD1 mechanism, which captures the variable effects of maintenance actions and provides more faithful representations of system behavior. Simulation studies and applications confirm the model's effectiveness. Finally, we propose an accelerated degradation model that combines the inverse Gaussian process with an exponential acceleration factor and the imperfect maintenance mechanism. This formulation allows for the simultaneous assessment of the effects of external stress variables and maintenance actions, providing estimates of the mean time to failure and reliability functions that are more consistent with dynamic operating conditions. Across all models, we adopt a classical approach to construct likelihood functions, estimate parameters via maximum likelihood, and investigate asymptotic properties through simulation studies. Applications demonstrate the potential of the proposed methodologies to support more effective maintenance policies and provide technical insights for managing of repairable systems operating under variable and heterogeneous conditions.
Direito, faticidade e validade: a influência de Habermas na compreensão da democracia e da justiça no século XXI
(Universidade Federal de São Carlos, 2025-08-18)
Roiz, Fellipe
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Moraes, Renato Almeida de
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https://lattes.cnpq.br/7510744968129427
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https://orcid.org/0000-0001-8674-5799
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https://lattes.cnpq.br/5546771915417796
Jürgen Habermas' Theory of Communicative Action argues that the legitimacy of democracy and law is closely linked to the ability for genuine dialogue among citizens. Habermas asserts that the legitimacy of legal norms and democratic institutions cannot be imposed authoritatively but must emerge from a deliberative process in which citizens, through rational communication, actively participate in the formation of the norms that govern their lives. In this sense, law is seen as a social mediation, justified when it stems from a consensus achieved through transparent and inclusive public debate. By emphasizing the importance of communicative action and the public sphere, Habermas provides a critique of the growing instrumentalization of social relations and proposes a modernity where practical reason and mutual understanding are fundamental to building a more democratic and just society.
Nem a dor, nem o sofrimento, escrevo para que eu continue sendo refeita: escrevivência, educação e memória
(Universidade Federal de São Carlos, 2025-08-18)
Santos, Daiane
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Dinis, Nilson Fernandes
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https://lattes.cnpq.br/9901790534758296
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https://orcid.org/0000-0002-8596-1577
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https://lattes.cnpq.br/0833748060639678
En esta escrevivência (escribir-viviendo), tejí estrategias de supervivencia y resistencia que elaboré como niña y mujer negra en mi tránsito por los espacios educativos. Fundamentada en el concepto de escrevivência de Conceição Evaristo (2016; 2020) y el principio de encruzilhada (encrucijada) de Leda Maria Martins (2003), reúno fragmentos y registros crudos de los manuscritos de mis diarios desde la secundaria hasta la maestría (2012-2021), y del doctorado (2022-2025). Desde ahí, narro cómo mi cuerpo experimentó tránsitos y desplazamientos en espacios formativos familiares, religiosos y académicos. A continuación, expongo las contradicciones y potencialidades de cada espacio, denunciando las desigualdades étnico-raciales ante estructuras vigentes. Doy cuenta de cómo la escritura actuó como fuerza de reinvención y cómo redes de cuidado (afectivas, familiares, institucionales) sustentaron mi existencia. Afirmo que esta escrevivência es en sí misma una tecnología de resistencia negra: las vivencias encarnadas revelan que mediante la escritura, el cuerpo disidente, operando en la encrucijada de tiempos y memorias, produce conocimiento-vida.