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Uma análise de memes ofensivos e de cunho político no contexto da eleição brasileira de 2022
(Universidade Federal de São Carlos, 2026-03-30)
Lopes, Leandro de Oliveira
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Iasulaitis, Sylvia
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https://lattes.cnpq.br/4226275371443693
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https://orcid.org/0000-0002-3526-1003
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https://lattes.cnpq.br/1685606169755410
This dissertation analyzes 400 offensive political memes shared during the 2022 Brazilian electoral period on the social media platform X (formerly Twitter). In addition to investigating the discursive dynamics present in these contents, the study proposes a methodological update for the analysis of offensive political memes by incorporating specific categories of political attack into the taxonomy traditionally used in this type of research. The objective is to understand how these memes, particularly those focused on the Brazilian political scenario, seek to validate their respective ideologies by discrediting opponents and delegitimizing opposing discourses through offense. The research considers memes as multimodal discursive and cultural artifacts embedded within the context of contemporary digital culture and, at the same time, is grounded in an Information Science perspective that understands information as a thing, treating memes as documents. From this perspective, memes cease to be merely ephemeral content and instead become evidence of knowledge, values, and cultural and political practices shared by social groups. Initially, a theoretical review was conducted tracing the shift in the concept of the meme from its origins in memetic theory to its appropriation by communication and digital culture studies in the form of called internet memes. Following this review, the characteristics of the database used were presented, and the curation procedures guiding the analytical construction were described, including the stages of classification and cataloging of the memes. For the analysis, a typological content model was initially adopted, classifying political memes according to three main categories subdivided into twelve subcategories. The empirical analysis, however, revealed limitations in this taxonomy when it became necessary to capture certain forms of attack present in the corpus. In response to this limitation, the research proposed an update to the analytical model, incorporating new categories related to political attack strategies, namely accusation, morality, fake news, and violence. The results demonstrate significant discursive differences between the political spectrums analyzed: while memes associated with the left tend to concentrate on strategies of ridicule, political humor, and symbolic moralization, memes linked to the right show a higher incidence of accusation and content classified as fake news. This expansion makes it possible to refine the analysis of offensive political memes, more accurately understand the discursive dynamics involved in the circulation of such content in digital environments and offer methodological contributions for future studies on digital political communication, participatory culture, and meme analysis.
Trajetórias escolares de alunos surdos e/ou com deficiência auditiva na educação básica: um estudo longitudinal de 2008 a 2023 no município de João Pessoa
(Universidade Federal de São Carlos, 2026-03-30)
Fernandes, Francyllayans Karla da Silva
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Schneider, Gabriela
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http://lattes.cnpq.br/7221139835915668
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https://orcid.org/0000-0002-6346-2849
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Lacerda, Cristina Broglia Feitosa de
This dissertation analyzes the materialization of national educational policies aimed at ensuring access, retention, and completion of Basic Education for deaf students and/or students with hearing impairment in the municipality of João Pessoa, Paraíba, Brazil, from 2008 to 2023. The study is grounded on the assumption that, although the Brazilian legal framework has significantly advanced in recognizing the educational rights of this population especially through the strengthening of inclusive education and bilingual education perspectives structural and institutional challenges continue to limit the effective implementation of these rights throughout students’ educational trajectories. The guiding research problem seeks to understand how inclusive and bilingual policies have contributed, in terms of access, retention, and completion, to the educational trajectories of thirteen cohorts of deaf students enrolled in Basic Education in João Pessoa (PB) in 2008 and followed until 2023. The general objective was to analyze these students’ educational trajectories, identifying patterns of regularity, irregularity, and interruption, as well as the impacts produced by educational policies throughout the period under investigation. Methodologically, this is a quantitative longitudinal study based on the analysis of microdata from the School Census produced by the National Institute for Educational Studies and Research Anísio Teixeira (Inep). Enrollment tracking was conducted through the Protected Data Access Service (Sedap), enabling the individual monitoring of 183 students identified as deaf and/or with hearing impairment, distributed across thirteen cohorts, from Early Childhood Education to the third year of Upper Secondary Education. The variables analyzed included promotion, grade repetition, dropout, migration to Youth and Adult Education (EJA), and completion of Basic Education. The typologies of educational trajectories regular, slightly irregular, highly irregular, and interrupted were developed based on the proposal by Souza, Senkevics, and Rodrigues (2024), allowing the classification and description of school pathways over time. In addition, a documentary analysis of the normative framework supporting Brazilian educational policy was carried out, highlighting the Federal Constitution of 1988, the National Education Guidelines and Framework Law (LDB), the National Education Plan (PNE 2014–2024), the Brazilian Inclusion Law (LBI), Decree No. 5.626/2005, and Law No. 14.191/2021. This analysis discusses tensions between the context of policy production and the context of practice, revealing contradictions between legal advances and operational limitations in policy implementation within education systems. The results indicate that, although formal access to mainstream schooling has expanded, the educational trajectories of deaf students and/or students with hearing impairment remain marked by high levels of age-grade distortion, grade repetition, and dropout, particularly during transitions between educational stages, especially from lower secondary education to upper secondary education. Access has not consistently translated into sustained retention and completion, pointing to weaknesses in the implementation of inclusive and bilingual education policies, particularly regarding the pedagogical, linguistic, and institutional conditions required to guarantee the right to education. This dissertation contributes to the advancement of longitudinal studies on deaf education in Brazil by providing empirical evidence that highlights the gap between rights ensured at the normative level and the actual conditions of schooling. By exposing the limits of formal universalization, the study reinforces the need for public policies that articulate access, retention, meaningful learning, and completion, ensuring the full educational experience of deaf students within Basic Education.
Reciclagem de sucata de usinagem de aço inoxidável austenítico visando uso em manufatura aditiva
(Universidade Federal de São Carlos, 2026-03-30)
Shimoda, Rafael Daiki
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Gargarella, Piter
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https://lattes.cnpq.br/4641435644243916
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https://orcid.org/0000-0003-4445-5819
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https://lattes.cnpq.br/2566785259765058
Metals are widely used as raw materials in the manufacturing of industrial components. However, the exploration of mineral reserves, as well as extraction and beneficiation processes, require high energy consumption and often occur in environmentally sensitive regions. In this scenario, the circular economy emerges as a strategic alternative to reduce dependence on primary resources and minimize the energy impacts associated with metal production. Nevertheless, the feasibility of reuse depends on obtaining recycled materials with properties equivalent to those of the original raw material. In this work, the reuse of stainless steel chips, predominantly from the 316L alloy, was investigated as a raw material for powder production via gas atomization, followed by its application in additive manufacturing through Laser Powder Bed Fusion (LPBF). Initially, a systematic study was conducted on cleaning the chips, emphasizing the removal of organic contaminants, evaluating methods such as water washing, the use of an aqueous solution containing a commercial surfactant, and/or controlled heating. After defining the optimized cleaning method, the chips were cleaned and remelted to produce ingots, which were then gas-atomized. The resulting powders were sieved, resulting in predominantly spherical particles in the 20–75 µm size range, suitable for the LPBF process. Samples were then produced by LPBF and characterized regarding microstructure, phase formation, and mechanical properties. The results indicated that the most efficient cleaning method, evidenced by the greatest mass variation, was the combination of washing with an anionic surfactant solution (volume ratio of 0.005) and heating at 300 °C, as shown by the mass variation analyses. Heating without washing, although with a similar mass variation, performed similarly but caused color changes in the chips, suggesting possible carbon incorporation on the surface. The powders obtained were sieved, resulting in predominantly spherical particles in the 20–75 µm range with good flowability, suitable for LPBF processing. The powder produced from recycled material exhibited adequate flowability and morphology for LPBF processing. However, microstructural analysis of the samples manufactured by LPBF revealed the presence of cracks along grain boundaries, associated with solidification cracks, which mainly occurred due to the high carbon content in this material.
Efetividade do Programa Nacional de Alimentação Escolar (PNAE) em tempos de pandemia: uma análise de dois municípios da região sudoeste paulista
(Universidade Federal de São Carlos, 2026-03-30)
Godoi, Ronaldo Wilson de
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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/9916231359218456
This research encompasses an analysis of the effectiveness of the National School Feeding Program (PNAE) during the pandemic, considering the program's adaptation strategies in the face of the public calamity. It is a qualitative study conducted in two municipalities in the southwestern region of the State of São Paulo. Semi-structured interviews were carried out with program managers and nutritionists in the studied municipalities. Before the pandemic, while students were attending school and had proper access to school meals, the program strongly contributed to the development, growth, and personal performance of each student, fostering the formation of healthy eating habits. However, during the Covid-19 pandemic, a new scenario emerged, drastically affecting in-person education systems and students' access to school meals in public schools. After the gradual resumption of in-person classes in schools, students regained access to school meals. Despite the program adopting new adaptation strategies during the pandemic, beneficiary students still experienced a degree of food insecurity due to a lack of access to in-person school meals. Program managers and nutritionists took some initiatives during the COVID- 19 pandemic, such as providing food baskets, vegetables, and prepared meals, but these were insufficient to guarantee adequate nutrition, leading to losses in the quality of teaching and learning for students. This research highlighted the importance of managing the National School Feeding Program (PNAE) in the southwestern region of the state of São Paulo. Furthermore, it contributed to enabling nutritional managers of public policies to reflect on, adapt to, and develop effective strategies for implementing food security policies, whether in optimistic or pessimistic scenarios.
A terceira margem da literatura: transferências entre sistemas de cultura em The Last Of Us Parte 2
(Universidade Federal de São Carlos, 2026-03-31)
Lisita, Bianca Francischini
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Rocha, Rejane Cristina
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https://lattes.cnpq.br/5669300635333699
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https://lattes.cnpq.br/0363783716038166
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https://orcid.org/0000-0003-2735-0185
This thesis investigates The Last of Us part 2 through the lens of Polysystem Theory (Even-Zohar, 1990), proposing that the game constitutes a nomadic product that inhabits a “third margin” between the print literary system, the digital literature system, and the electronic games system. Drawing on the Rosian metaphor of the crossing—which informs both the methodological gesture and the analytical trajectory—the study problematizes the historical indefinition of the literary object, arguing that literariness is not an intrinsic attribute of the text but rather the result of systemic forces mobilized by institutions, repertoires, producers, consumers, and markets. The first part examines the print literary system, highlighting its central position within the literary polysystem and the legitimizing role of the book, singular authorship, and inherited repertoires from a tradition which, although dominant, remains in constant tension with peripheral strata. The study then analyzes the digital literature system, focusing on the role of the Electronic Literature Organization and showing how multimodality, algorithmic processes, and material experimentation broaden the notion of literariness beyond the written word. In this third margin, The Last of Us part 2 is shown to function as a catalyst for frictions among these systems: its audiovisual narrative, its sensorial reading aesthetics, and its programming as a meaning-making agent instantiate what the dissertation terms a “novel of images,” a mode of narrativity that displaces the reader-player into a hybrid interpretive position. The analysis also reveals a crisis of authorship, disputes over legitimacy, and tensions between expectations of interactivity and authorial control within the game system. These conflicts confirm that the product is the core of a systemic misalignment, challenging stable taxonomies and demonstrating that contemporary cultural objects circulate across mutually influencing systems. The study concludes that The Last of Us part 2, by refusing a fixed position, makes visible the polysystem’s own movement: a literature in transit that requires of the researcher not the comfort of familiar margins, but the courage to inhabit the center of the river, where new narrative forms emerge and take shape.
Modificação química de quitosana com etoximetilenos: otimização reacional, caracterização e aplicação na adsorção de cristal violeta e diclofenaco
(Universidade Federal de São Carlos, 2026-03-31)
Mathias, Samir Leite
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Dufresne, Alain
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https://lattes.cnpq.br/2836712749450886
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https://orcid.org/0000-0001-8181-1849
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Menezes, Aparecido Junior de
The increasing presence of organic contaminants in aquatic environments has stimulated significant interest in the development of new adsorbent materials capable of efficiently removing these compounds from water. Among the materials investigated for this purpose, chitosan stands out as a promising biopolymer due to its abundance, biodegradability, and the presence of reactive functional groups along its polymeric backbone. However, the adsorption performance of chitosan can be significantly enhanced through chemical modifications that alter its structure and surface properties. In this context, the aim of this project was to develop functionalized chitosan derivatives through nucleophilic vinylic substitution reactions using alkoxymethylene derivatives bearing different substituent groups, and to investigate how the electronic nature and density of these functional groups influence the adsorption performance of the material. Initially, chitosan was modified using (Ethoxymethylene)malononitrile, allowing the establishment of suitable reaction conditions for polymer functionalization through the formation of conjugated enamine structures, achieving a degree of substitution of up to 0.91. Subsequently, new chitosan derivatives were synthesized using Diethylethoxymethylenemalonate and Ethyl 2-cyano-3-ethoxyacrylate (Ethyl (ethoxymethylene)cyanoacetate), introducing diester and ester–nitrile groups, respectively. For these systems, reaction conditions were optimized using a design of experiments approach in order to maximize the degree of polymer functionalization. The obtained materials were characterized by different analytical techniques to evaluate the structural and physicochemical modifications resulting from the introduction of these functional groups. The adsorption performance of the synthesized derivatives was evaluated for the removal of model organic contaminants from aqueous solutions, including the dye crystal violet and the pharmaceutical compound diclofenac. The results demonstrated that chemical modification of chitosan significantly altered the surface properties of the material, directly influencing its adsorption capacity. An increase in the density of functional groups along the polymer chain led to enhanced affinity between the adsorbent material and the investigated contaminants, reaching a maximum adsorption capacity on the order of 219 mg.g-1 for diclofenac and 383 mg.g-1 for violet crystal. Overall, the results obtained in this thesis demonstrate that the chemical modification of chitosan through nucleophilic vinylic substitution reactions represents an efficient strategy for the development of new biopolymer-based adsorbent materials. In addition to improving the adsorption performance of chitosan, this synthetic approach also opens new perspectives for the development of functional polymeric materials with tunable properties for environmental applications.
Coumarin–dihydropyrimidinone hybrids as promising agents against ovarian cancer: synthesis, SAR, and in silico evaluation
(Universidade Federal de São Carlos, 2026-03-31)
Santos, Jhonathan dos
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Martinez, Alice
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Abe, Saulo Henrique Mendes
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Mello, Marcos Vinícius Palmeira de
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Santos, João Pedro Araujo dos
The coumarin scaffold is widely recognized for its broad range of biological activities, including antibacterial, anti-HIV, and anticancer properties. In parallel, molecular hybridization has emerged as an effective strategy to enhance biological activity and expand chemical diversity within drug discovery libraries. In this study, a series of coumarin–dihydropyrimidinone (DHPM) hybrids were synthesized via a Biginelli multicomponent reaction. The in vitro cytotoxic activity of these compounds was evaluated against a panel of cancer cell lines. A structure–activity relationship (SAR) analysis was carried out to elucidate the influence of different substituents and physicochemical properties on anticancer activity. Among the synthesized compounds, LSPN925 emerged as a good anticancer candidate and was further investigated for its effects on cell morphology and colony formation. In addition, in silico pharmacokinetic and toxicological evaluations were performed for the most active compounds to predict their drug-likeness and safety profiles. The preliminary SAR analysis revealed that lipophilicity and molecular volume of the compounds play a critical role in modulating their cytotoxic activity, highlighting these parameters as key considerations in the rational design of new coumarin-based anticancer agents. Overall, these findings support the potential of coumarin–DHPM hybrids as promising scaffolds for further anticancer drug development.
A educação midiática e o discurso neoliberal nas plataformas digitais educacionais de formação docente de língua portuguesa
(Universidade Federal de São Carlos, 2026-03-31)
Souza, Parla Camila dos Reis de
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Sargentini, Vanice Maria Oliveira
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http://lattes.cnpq.br/1406919572611392
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https://orcid.org/0000-0002-7760-3075
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https://lattes.cnpq.br/2923838793375892
This dissertation examines how the Brazilian educational digital platforms EducaMídia and Escolas Conectadas construct Media Education within a broader field structured by neoliberal rationality. Drawing on Michel Foucault’s concepts of archive, veridiction, tékhne, and parrhesia, I analyze how these platforms position themselves as legitimate authorities in the training of Portuguese Language teachers in Basic Education, thereby displacing the public university from its historically established role in teacher formation. The corpus is constituted, in Foucauldian terms, as an archive comprising EdTech mapping reports, national guidelines and regulatory documents issued by the Ministry of Education (MEC), editorials and institutional materials produced by the platforms, and technical notes from INEP concerning the acquisition of digital devices and internet access in Brazilian public schools. This archive enables an examination of the ongoing platformization of Basic Education, with particular attention to its epistemic claims, economic investments, and institutional entanglements. I argue that the consolidation of platform-based Media Education is closely linked to increased investment in educational startups and to policy decisions by MEC that favor digital mediation and competency-based frameworks. Through a discourse-analytic reading informed by Christian Laval and Pierre Dardot’s account of neoliberal governmentality, I demonstrate how the platforms mobilize tékhne as a regime of technical expertise that produces pedagogical “enchantment” through design, usability, and apparent efficiency. Simultaneously, their short-term training formats and modular courses reproduce neoliberal logics of flexibilization, responsibilization, and market-oriented accountability, thereby legitimizing public expenditures at the municipal, state, and federal levels that sustain the infrastructure of platformization. Pedagogically, I show that the lesson plans, workshops, and training modules offered by these platforms are characterized by the absence of explicit bibliographic grounding, the lack of articulated methodological frameworks, and a marked superficiality in their treatment of multimodal and journalistic-media genres. These genres are objectified and didacticized in ways that reduce their discursive complexity. I contend that this configuration functions as a mechanism of subjection—what Foucault conceptualizes as a process of minoritization—through which teachers are incorporated into platform-dependent forms of professional practice.
Democracia, liberdade e gênero: ressignificações perigosas no discurso de Jair Bolsonaro (2019-2022)
(Universidade Federal de São Carlos, 2026-04-01)
Camargo, Bruna Quinsan
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Cepêda, Vera Alves
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https://lattes.cnpq.br/4917331423373631
;
https://orcid.org/0000-0002-1419-0090
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https://lattes.cnpq.br/7320245973318541
This study analyzes how the presidential discourse of Jair Bolsonaro, disseminated in live streams on YouTube between 2019 and 2022, operates through the reconfiguration of the meanings of freedom and democracy, contributing to processes of dedemocratization in which democracy is undermined in the name of democracy itself. To investigate how the discourse of Jair Bolsonaro reformulates the concepts of freedom and democracy in order to promote dedemocratization, the transcriptions of the live streams were analyzed by Content Analysis, with the aid of the software MAXQDA. It is argued that Bolsonaro’s discourse operates through three articulated moves. First, it constructs a binary opposition that associates the left with communism, corruption, and dictatorship, while presenting the right as synonymous with democracy and freedom, a narrative that enables the delegitimization of democratic institutions portrayed as infiltrated and captured by an ideological enemy. Second, it redefines the meaning of freedom and democracy by linking them to the defense of traditional Christian morality, framing feminist and gender agendas as threats to the family, to society, and to democracy itself. Finally, it identifies democracy with the figure of the leader and with the will of his followers, converting personal loyalty into a criterion of political legitimacy and hollowing out democratic pluralism. The results show that this discursive configuration delegitimizes democratic institutions and the defense of gender- and sexuality-related rights in the public debate, personalizes political authority by transforming loyalty to the leader into a criterion of legitimacy, treats political opponents as enemies and restricts pluralism, and normalizes the acceptance of extra-institutional solutions, such as coups d’état, thus contributing to processes of democratic erosion in Brazil.
Pomacea figulina (Spix in Wagner, 1827) (Mollusca, Gastropoda) como uma espécie-modelo para ensaios ecotoxicológicos e monitoramento ambiental de microplásticos em águas doces
(Universidade Federal de São Carlos, 2026-04-01)
Woppe, Natalia
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Arruda, Eliane Pintor de
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https://lattes.cnpq.br/8843243211552880
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Waldman, Walter Ruggeri
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https://lattes.cnpq.br/0616238673458322
This dissertation analyzed the occurrence and effects of microplastics in the gastropod mollusk Pomacea figulina (Spix in Wagner, 1827), to evaluate its potential as a bioindicator in aquatic environments. The work was organized into a general introduction, three articles, and conclusions. In the first article, a protocol for rearing the species in the laboratory was developed, testing different diets to identify the ideal conditions for growth and survival. This is an essential step, given the difficulties encountered in waters with low hardness, which compromise the integrity of the shells. The results demonstrated that the combination of feed with kale was the most efficient regime, while the diet composed exclusively of kale resulted in high mortality. The second article characterized microplastics present in specimens collected from a tributary (Rio Pirajibu-Mirim - 23°29'24.2" S; 47°23'06.3" W) of the Sorocaba River, analyzing the color, shape, size, chemical characterization, and abundance of the eliminated particulates. Fibers and fragments were identified as the predominant components, and it was found that clearance is not linear, suggesting temporary retention in the digestive tract. The third article consisted of controlled exposure experiments (72 h) to polyethylene microplastics at different concentrations (10% and 20%), allowing the evaluation of elimination patterns and the possibility of bioaccumulation. Taken together, the results demonstrate that P. figulina presented characteristics favorable to biomonitoring, such as regional abundance, capacity to ingest plastic particles, and sensibility to impacted environments. The dissertation provided data on the maintenance of the species under laboratory conditions and on the effects of microplastics on freshwater mollusks, presenting it as a promising model for studies of plastic pollution in continental ecosystems.
Corpo, desejo e criação: do acontecimento aos agenciamentos maquínicos em Gilles Deleuze
(Universidade Federal de São Carlos, 2026-04-01)
Nascimento, Cássia Alves do
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Torres Marques, Silene
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https://lattes.cnpq.br/4822141288006918
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https://orcid.org/0000-0002-3395-7381
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https://lattes.cnpq.br/8710055141219299
This research investigates the movements that make an act of creation possible, based on three moments in the fhilosofhy of Gilles Deleuze (and Féliz Guattari): the event in The Logic of Sense, desire and its machinic Productions in Anti-Oedipus; and the aberrant movements of the Eart in A Thousand Plateaus. In all these movements, the body without organs appear a central as a central operator of creation, insofar as it is capable of decoding and desterritorializing strata, disorgorganizing forms, and releasing flows. If, in The Logico of Sense, the body is tensed to think the incorporeal effects that arise from its mixtures depth, giving rise to the event that makes language possible, then, in Anti-Oedipus and A Thousand Plateaus, the body acquires ever greater dimensions, rising to the surface and instituting a plane of consistency upon which all reality is produced and desire is assembled. In this sense, desire is investigated as a revolutinary power, while at the same time can be captured, losing its productive power and transforming itself into a desire for death.
Análise comparativa do desempenho de modelos de machine learning na previsão de focos de incêndio no cerrado utilizando variáveis climáticas
(Universidade Federal de São Carlos, 2026-04-01)
Pádua, Juliano Eleno Silva
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Levada, Alexandre Luis Magalhães
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https://lattes.cnpq.br/3341441596395463
Predicting fire outbreaks in the Cerrado biome using meteorological variables is a relevant problem for environmental monitoring and supporting alert systems. In this work, a comparative analysis of classical machine learning models for hourly prediction of fire outbreak occurrence was carried out, based on the integration between INMET data and records from INPE's BDQueimadas. The Logistic Regression, Naive Bayes, linear SVM, Random Forest, and XGBoost models were evaluated in different data preparation scenarios, including original datasets, datasets with derived variables, KNN imputation, and imbalance treatment strategies such as SMOTE and weight balancing. The results showed that tree ensemble-based models were the most suitable for the problem, especially XGBoost, and that feature engineering and explicit imbalance treatment contributed decisively to increased performance, especially in metrics more sensitive to the detection of the positive class, such as PR - AUC and F1-score.
Representação vetorial consciente de tempo para recomendadores incrementais
(Universidade Federal de São Carlos, 2026-04-01)
Sereicikas, Rafael
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Almeida, Tiago Agostinho de
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https://lattes.cnpq.br/5368680512020633
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https://lattes.cnpq.br/7736059509842472
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Manzato, Marcelo
With the growth of data volume, recommendation systems have evolved from static batch approaches to incremental models, allowing intelligent agents to treat recommendation as a dynamic decision process and learn continuously from user feedback. However, by prioritizing stages such as policy optimization and reward modeling, the current literature neglects important aspects of these systems, such as context representation and temporal consumption dynamics, factors intrinsically related to the continuous recommendation scenario. Based on this gap, this work introduces TAI2Vec, an item embedding generation model that integrates temporal variables to create latent representations adaptable to different consumption rhythms. Through an extensive experimental evaluation, covering from similarity recommendations to incremental learning algorithms based on bandits, it is demonstrated that TAI2Vec surpasses traditional methods in recommendation tasks, especially in scenarios with data scarcity, evidencing the capacity that temporal information has in enriching contextual learning in different recommendation approaches. The source code for the TAI2Vec methods is publicly available at: https://github.com/UFSCar-LaSID/tai2vec.
Framework para estudos de mapeamentos inteligentes de grafos de multiaplicações em arquiteturas many-core
(Universidade Federal de São Carlos, 2026-04-01)
Gallon, Igor Felipe
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Pedrino, Emerson Carlos
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https://lattes.cnpq.br/6481363465527189
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https://lattes.cnpq.br/0243849618991002
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https://orcid.org/0009-0004-5135-2601
The increasing demand for data processing in compute-intensive applications, such as intelligent systems and streaming applications, has driven the adoption of Multi-Core and many-core architectures as an alternative to single-core systems. In this context, Network-on-Chip (NoC)-based architectures have emerged as an efficient solution for communication among multiple cores. However, the problem of task mapping in these architectures, especially in scenarios involving multiple concurrent applications, remains challenging, as it requires the simultaneous optimization of several metrics, such as energy consumption, latency, load balancing, and fault tolerance. In this context, in this work is proposed a framework for the study of task mapping in NoC-based many-core architectures, with a focus on multi-application environments. The approach integrates a multi-objective optimization module, developed in MATLAB, responsible for generating mapping solutions and analyzing the Pareto front, with a high-level NoC simulator implemented in Python, which enables the evaluation of mapping strategies through packet-level network traffic simulation. The proposed tool enables systematic design space exploration, allowing comparative analysis of different mapping strategies, visualization of performance metrics, and extraction of statistical results. Furthermore, the abstraction level adopted in the simulator supports rapid experimentation and the evaluation of complex scenarios without requiring detailed hardware-level modeling. The obtained results indicate that the proposed framework is effective in supporting multi-objective task mapping studies in many-core architectures, contributing as a flexible and accessible tool for performance analysis, education, and the development of new mapping strategies in NoC-based systems.
Aprimorando a detecção de Testes Flaky orientados por reexecuções com orquestração de contêineres
(Universidade Federal de São Carlos, 2026-04-01)
Lopes, João Victor Lima
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Endo, André Takeshi
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https://lattes.cnpq.br/4221336619791961
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https://orcid.org/0000-0002-8737-1749
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https://lattes.cnpq.br/9490984753361156
Software testing is a primary activity to achieve good quality standards, where developers rely on automated tests to identify and fix software bugs and validate solutions. These tests are sometimes unreliable and present non-deterministic results, such as passing and failing when executing the same code and test several times. This type of inconsistent test is called flaky test. While the literature presents many initiatives to identify flaky tests, rerunning the tests several times remains the primary approach to debugging and analyzing test flakiness. This master’s thesis presents an approach that enhances rerun-driven flaky test detection by applying container orchestration so that flaky tests are detected faster, and more flaky tests are uncovered. To do so, we employ container orchestration technologies like Kubernetes and other tools, like Grafana, Prometheus, and Loki. The proposed approach is instantiated in a tool called FlakyTestLab. We evaluated FlakyTestLab with twenty-eight open source projects, being fourteen in Java and fourteen in Python. Using a High-End computer, FlakyTestLab performs reruns on average 76.93% faster than a baseline, and is 300% faster than the baseline in finding the first failure. FlakyTestLab detected flaky tests up to 143.40% more than the baseline. On the other hand, we observe that the flakiness ratio decreased when FlakyTestLab employed more parallelism.
A prática como contexto para o conhecimento especializado do professor de Matemática na Olimpíada Brasileira de Foguetes
(Universidade Federal de São Carlos, 2026-04-02)
Gagliardi, Luis Guilherme Inglese
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Oliveira, Paulo Cesar
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http://lattes.cnpq.br/7516513469811353
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http://lattes.cnpq.br/2761716863143782
;
Peixoto, Magda da Silva
This research project aims to analyze, in light of the Mathematics Teachers’ Specialized Knowledge (MTSK) model, which subdomains of the specialized knowledge of mathematics teachers are mobilized and coordinated during practical teaching activities involving the design and construction of a universal launch base for PET bottle rockets, for levels 1 to 4 of the Brazilian Rocket Olympiad (OBAFOG).The investigation is grounded in the researcher’s own teaching experience, who, over nearly a decade working in two private schools in the region of Sorocaba, has developed activities with elementary and secondary school students using the OBAFOG theme as an active learning methodology strategy. Adopting a qualitative approach and a theoretical-reflective nature, the research uses autoethnography as its methodological framework, considering professional practice as a legitimate field for knowledge production. The analysis will be guided by the subdomains of the MTSK model (KoT, KMT, and KFLM) and will also seek to identify teaching and formative skills that go beyond the scope of the model, such as transdisciplinarity, collaborative work, and technical problem-solving. As a result, an educational product will be developed, consisting of a structured lesson proposal for Basic Education teachers, including methodological guidelines and materials necessary for the implementation of the activity. This research aims to contribute to the recognition of teaching experience as a source of reflection and to deepen the understanding of the professional knowledge of mathematics teachers in investigative and meaningful contexts.
TCI mobile: validação de constructo, tradução e adaptação transcultural e análise da usabilidade do aplicativo de saúde para ser utilizado por pessoas com AVC crônico
(Universidade Federal de São Carlos, 2026-04-06)
Gomes, Laura Hellen dos Santos Cerqueira
;
Anjos, Sarah dos
;
https://lattes.cnpq.br/3974776002027365
;
https://orcid.org/0000-0002-7792-862X
;
Pereira, Natalia Duarte
This doctoral thesis comprises two studies related to the use of mobile health applications aimed at individuals with chronic Cerebral Vascular Accident (stroke). Study I aimed to investigate the construct validity of the TCI Mobile application for the evaluation of mobility in a real environment of people after chronic stroke. We expected to find a positive moderate to strong correlation with the Life Space Assessment (LSA) scale, with the 6-Minute Walk Test (6MWT), with the self-selected speed in the 10-meter Walk Test (10MWT), and with the Lower Extremity Motor Activity Log (LEMAL). In addition, we expected to find a moderate to strong negative correlation with Timed Up and Go (TUG). This was a cross-sectional study, carried out with 30 individuals diagnosed with stroke for more than six months who were able to walk. Data collection took place over five days. On the first day, held in the physiotherapy department, sociodemographic data were collected and instruments to assess mobility and gait were applied: TUG, LSA, 6MWT, 10MWT, and LEMAL. On the second day, during a previously authorized home visit, an accelerometer was installed in the less affected limb and a smartphone containing the TCI Mobile application was made available, which remained in use for three consecutive days. After this period, the equipment was collected by the researchers. The results confirmed the hypothesis of the study, demonstrating a positive and high correlation between the TCI Mobile measurements and the activity monitors (r = 0.63; p < 0.01), as well as with the MWT10 (r = 0.54; p < 0.01) and the LSA (r = 0.54; p < 0.01). There was a negative and high correlation with the TUG (r = −0.50; p < 0.01) and a moderate positive correlation with the 6MWT (r = 0.42; p = 0.02) and LEMAL (r = 0.45; p = 0.01), indicating consistency of the measurements obtained by the app in the assessment of mobility in the real environment. Study II aimed to perform the translation and cross-cultural adaptation of the TCI Mobile application from Brazilian Portuguese to United States English, as well as to evaluate the content validity and usability of the adapted version. The translation and cross-cultural adaptation process was conducted in five sequential stages: (1) initial translation from Portuguese to English by independent translators; (2) synthesis of the translated versions in a single consensual document; (3) back-translation into Portuguese by translators whose mother tongue was Portuguese and who did not have access to the original version; (4) analysis by a ommittee of experts to verify semantic, idiomatic and conceptual equivalences; and (5) conducting pre-testing with end users. After completing these steps, the English version was evaluated by individuals with chronic stroke (injury time greater than six months), with score higher than 24 points in the Mini-Mental State Examination and access to the internet, as well as by therapists with experience in the application of Induced Restraint Therapy. The evaluation of content validity and usability of the English version had the participation of 24 evaluators, 12 therapists and 12 individuals with chronic stroke living in North America. The analysis of the relevance, comprehensiveness and comprehensibility of the tasks and notifications of the application was carried out through the calculation of the Content Validity Ratio (CVR), adopting as an acceptability criterion the minimum value of 0.59. Task list items and push notifications that did not reach this value were deleted or reworded as suggested by the participants. The usability of the application was evaluated using the User Version of the Mobile Application Rating Scale (uMARS), with the results presented using means and standard deviations. In the initial stages of the adaptation process (I to III), no relevant divergences were identified between the versions produced by translators and back-translators. In stage IV, the expert committee made adjustments to ensure conceptual equivalence and clarity in the drafting of terms and instructions. During the pre-test (step V), the content validity analysis indicated the exclusion of 24 of the 68 tasks originally available in the application, in addition to the removal of a push notification. It was also observed the need to reformulate 14 tasks to ensure better cultural and contextual adequacy to the target audience. The usability assessment using the uMARS scale demonstrated satisfactory levels of usability both among therapists and among individuals with stroke, indicating good acceptability and ease of use of the adapted version of the application. The findings obtained in this thesis contribute to the advancement of the use of mobile technologies in the rehabilitation of people after stroke, evidencing the validity, usability and cultural adequacy of a digital tool aimed at the assessment and monitoring of mobility in real life contexts. These results expand the possibilities of clinical application and provide subsidies for future research and for the improvement of digital strategies aimed at neurofunctional rehabilitation and the promotion of autonomy in this population.
Estimação de dados faltantes em séries temporais de irradiação solar: uma abordagem baseada em aprendizado de máquina
(Universidade Federal de São Carlos, 2026-04-06)
Santos, Gustavo Silvestre dos
;
Fernandes, Ricardo Augusto Souza
;
http://lattes.cnpq.br/0880243208789454
;
https://orcid.org/0000-0003-2361-6505
;
http://lattes.cnpq.br/4449311747364885
This Master’s thesis investigates missing data imputation in solar irradiance time series using machine learning-based approaches. Missing values pose a major challenge for analyses and applications in meteorology and solar energy, where data continuity and quality are essential for climate forecasting and photovoltaic system planning and operation. This study evaluates and compares statistical methods and machine learning models, including Multivariate Imputation by Chained Equations, Autoencoders, Long Short-Term Memory, and Transformers, applied to meteorological data provided by the National Institute of Meteorology. The methodology includes a characterization of missingness patterns and an analysis based on bioclimatic zones, which supports the selection of stations of interest and the incorporation of spatial and climatic context into the imputation process. Experiments were conducted under a controlled masking protocol with evaluation restricted to the missing positions, and results were compared against classical baselines such as linear interpolation. Overall, the findings indicate that models capable of capturing temporal dependencies and leveraging neighborhood information achieve higher robustness, particularly under longer contiguous gaps.
Entre o liberalismo e o dirigismo democrático: a Assembleia Nacional Constituinte de 1946 e a gênese constitucional do desenvolvimentismo brasileiro
(Universidade Federal de São Carlos, 2026-04-07)
Souza, José Augusto Marques de
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Cepêda, Vera Alves
;
https://lattes.cnpq.br/4917331423373631
;
https://lattes.cnpq.br/1629566453277162
;
Gumiero, Rafael Gonçalves
This thesis examines the formation of the economic order in the Brazilian Constitution of 1946 through an analysis of the political and institutional dynamics of the National Constituent Assembly. It argues that the 1946 Constitution cannot be adequately understood through traditional dichotomous classification, such as liberal restoration versus authoritarian interventionist continuity, and should instead be interpreted as the outcome of a complex constitutional decision produced under conditions of structural conflict, political pluralism, and the need for democratic stabilization. The research adopts an analytical framework that combines constitutional theory, institutional analysis, and normative examination, shifting the focus from the constitutional text in isolation to the institutional mediations that filtered ideas, interests, and economic projects during the constituent process. It demonstrates that the constitutionalization of the economic order did not result from an arbitrary ideological choice, but from the historical recognition of the insufficiency of market mechanisms to address the structural challenges of Brazilian development. The dissertation contends that the 1946 The Constitution consolidated and legitimized state intervention and economic planning without abandoning the market economy or political freedoms. Normative ambiguity is interpreted as a deliberate constitutional technique for deferring and managing conflict, allowing the coexistence of competing projects within a single legal framework and contributing to democratic stability.
A new strategy to mitigate herbicide contamination: decentralized electrochemical treatment of real glyphosate-contaminated wastewater
(Universidade Federal de São Carlos, 2026-04-07)
Mandelli, Cecília Montanha
;
Sgarbi, Ricardo
;
Oliveira, Kaíque Souza Gonçalves Cordeiro
;
Oliveira, Gabriel Palace
;
Ruotolo, Luis Augusto Martins
Electrochemical treatment of wastewater is a promising way to reduce organic pollutant loads. The herbicide glyphosate is extensively used in agriculture, so the washing of its containers generates substantial volumes of harmful effluents. This study investigates the optimal conditions for electrolysis of a real glyphosate-contaminated wastewater, considering treatment time, energy consumption, and operational costs. Experiments were conducted using an electrochemical flow reactor fitted with a boron-doped diamond (BDD) anode. A factorial design was employed to evaluate the effects of current density (10–30 mA cm−2) and initial organic load (100–300 mg TOC L−1). Monitoring was performed of total organic carbon (TOC), chemical oxygen demand (COD), and cell potential. The use of a low-cost turbulence promoter (plastic mesh) improved mass transfer, enhanced mineralization efficiency, and reduced energy consumption, while the control of temperature had a minimal influence. Application of a current density of 30 mA cm−2 provided the best balance between treatment duration and energy efficiency. Predictive models were developed to estimate the electrolysis time and specific electrochemical energy consumption (SEEC). Operational cost related to electrochemical energy consumption ranged from USD 1.71 m−3 to USD 7.09 m−3, with values between USD 2.89 m−3 and USD 5.77 m−3 obtained for wastewater containing 300 mgTOC L−1 treated at 30 mA cm−2, demonstrating the feasibility of the process, even with a high organic load. These findings contribute to the development of optimized and cost-effective electrooxidation systems for the treatment of pesticide-contaminated effluents, supporting the sustainable management of agricultural wastewater.