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Blockchain em sistemas de saúde: um estudo de arquiteturas
(Universidade Federal de São Carlos, 2025-07-23)
Francisco, Isadora Delatore
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Guardia, Hélio Crestana
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https://lattes.cnpq.br/1780902767520967
;
https://orcid.org/0000-0001-5010-747X
;
https://lattes.cnpq.br/8080456194439379
The increasing digitalization of data in the healthcare sector, driven by hospital modernization initiatives, Electronic Health Record (EHR) systems, and connected medical devices (IoMT), has led to a growing volume of sensitive clinical information circulating among different institutions. This scenario brings to light significant challenges related to information security, patient privacy, and interoperability between heterogeneous systems. Ensuring that such data is accessed only by authorized users, maintained with integrity throughout its lifecycle, and shared in an auditable manner across organizations is an increasingly critical demand. In this context, blockchain systems can be explored as a potential solution.Blockchain technology offers a decentralized and immutable structure that enables secure, transparent, and auditable transaction recording, even in fragmented environments where data originates from diverse sources, each with its own database and data model. Its application in healthcare can enable controlled data sharing between institutions, ensure the integrity of records, and provide reliable audit trails without relying on a central authority.This research was structured in two main stages: a literature review that identified patterns and trends in blockchain-based solutions for healthcare, and the proposal and implementation of architectures based on those patterns using the Hyperledger Fabric platform. As a contribution, this work presents two architectures that aim to integrate relevant technologies found in the literature: a Notary Service System for traceable data sharing between organizations, and a Direct Storage System for Electronic Medical Device data on the blockchain. Based on these architectures, a permissioned network was planned with multiple organizations, channels were created, access control profiles were defined, and the development of the chaincode was initiated.
Possibilidades para uma educação dialógica em processos de ensino-aprendizagem na EJA
(Universidade Federal de São Carlos, 2025-07-23)
Leal, Igor Gabriel
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Conti, Celso Luiz Aparecido
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https://lattes.cnpq.br/6967887143687279
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https://lattes.cnpq.br/6226517460847819
This text presents a doctoral research study whose central theme is the dialogical possibilities in teaching and learning processes within a Youth and Adult Education (EJA) class. Paulo Freire is identified as the main theoretical reference, in articulation with a set of other authors whose approaches either dialogue with or complement his proposal. Based on this theoretical framework, we sought to address the following question: which aspects of the teaching and learning processes in a Youth and Adult Education class can be identified as dialogical? The general objective was to investigate dialogical aspects in the teaching and learning processes of a Youth and Adult Education class, aiming to characterize and problematize them, in order to identify their exclusionary and transformative dimensions. To achieve this objective, we adopted the methodological contributions of the Communicative Methodology of research. The results indicate that dialogue manifests itself through aspects related to affectivity, the establishment and maintenance of interpersonal relationships, mutual understanding, and pedagogical elements associated with questioning, investigation, and reflection on the programmatic content. When recognized within the pedagogical relationships investigated, these elements mediate actions that bring education closer to a dialogical perspective. It was also possible to identify a set of actions aligned with the transformative dimension of the research object, leading to qualitative changes in the schooling of the young people, adults, and elderly participants. Although fewer in number, actions related to the exclusionary dimension were also identified, requiring constant monitoring by the teacher. Finally, we conclude that the relationships investigated and the environment in which the research was conducted significantly contributed to the promotion of meaningful learning, the cognitive improvement of participants, and the overcoming of traumas and failures from previous schooling experiences.
Algoritmos de feeds fazem texto? Um ensaio semântico-enunciativo sobre o Youtube
(Universidade Federal de São Carlos, 2025-07-23)
Michelin, Felipe
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Machado, Carolina de Paula
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https://lattes.cnpq.br/2597137507131618
Feed algorithms are responsible for the digital distribution of billions of media contents across the internet, primarily through major platforms. By processing massive amounts of data and variables, such as a user’s digital traces combined with data generated by the browsing of billions of other users, these algorithms ultimately create unique media displays for each user session of every registered user, with noticeable trending patterns. Although algorithms are computationally automated, their outcomes depend on other agents, such as the programmers who regulate their parameters, and the users themselves. What if, then, each of these unique displays could be considered as text or enunciation? What would be the implications and new possibilities for linguistic understanding? By choosing YouTube as its object, this essay seeks to describe the dynamics present on the platform and understand the possible meanings that algorithmic curation can produce. The theoretical foundation for the analysis was Semantics of Enunciation. Other theoretical perspectives, such as Discourse Analysis and Textual Linguistics, were also used for comparison and to explore potential convergences. This multifaceted approach was deemed necessary particularly due to the complexity of informational technology development in recent decades and its corresponding emerging social impacts.
Ameaças e vulnerabilidade socioambiental associadas à poluição por metais pesados na bacia hidrográfica do Río Quito (Chocó-Colômbia): proposta de uma estrutura sistêmica para a gestão de riscos
(Universidade Federal de São Carlos, 2025-07-23)
Pinto, Mauricio Jose Rosso
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Marrugo Negrete, Jose Luis
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https://orcid.org/0000-0002-3181-7529
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Hanai, Frederico Yuri
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https://lattes.cnpq.br/7651828454575175
This research analyzed the factors of hazard and socio-environmental vulnerability associated with heavy metal contamination in the Quito River basin (Chocó, Colombia), recognized as a subject of rights under Constitutional Court Ruling T-622 of 2016. An etymological analysis was conducted, through which the convolution relationship between hazard and vulnerability was established as external and internal components of risk, respectively. Based on cartographic information, the expansion of mining activities in the Quito River basin was evaluated, and contamination levels in sediments were determined, showing concentrations of mercury (5,22 mg/kg), chromium (56,85 mg/kg), and arsenic (20,31 mg/kg) in areas heavily impacted by mining, along with turbidity levels exceeding 250 NTU. A significant morphological alteration of the fluvial system was evidenced, including the accumulation of sand banks with an estimated volume of over 43 million m3, and high population exposure to environmental and health-related risks. In parallel, a systematic literature review of 98 scientific articles was conducted, which enabled the identification of 66 tools (mostly indices) and 58 socio-environmental aspects considered in risk management studies. The analysis of this body of work revealed that the identified tools focus primarily on the quantification of heavy metal concentrations, without integrating relevant social, economic, ecological, and cultural dimensions for a comprehensive risk assessment. Accordingly, with the aim of proposing a systemic structure for the integrated management of socio-environmental risk resulting from heavy metal contamination in the Quito River basin, the 58 aspects were prioritized through expert consultation, and their influence–dependence relationships were analyzed using MICMAC software. This process led to the identification of 21 key variables within the system. Based on the etymological analysis of risk components, a systemic structure was developed in which variables such as water and soil contamination by heavy metals represent the magnitude of the hazard; the expansion of illegal mining is linked to its spatial extent; and climatic factors such as rainfall are associated with the temporal dimension. Regarding vulnerability, exposure is reflected in variables such as the ingestion of contaminated water and food, while sensitivity and adaptive capacity are linked to access to sanitation services and vegetation cover. The conceptual model provides a framework for guiding the formulation of integrated socio-environmental risk management instruments in river basins affected by illegal mining, such as the Quito River.
Desenvolvimento de consórcio bacteriano de Bacillus subtilis e Pseudomonas aeruginosa imobilizado em poliuretano para biorremediação do corante Vermelho Congo
(Universidade Federal de São Carlos, 2025-07-23)
Trevizan, Caio Eduardo
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Montagnolli, Renato Nallin
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https://lattes.cnpq.br/7455124733755299
;
https://orcid.org/0000-0003-3801-9631
;
https://lattes.cnpq.br/7554846158388967
Azo dyes rank among the most persistent pollutants in industrial effluents, particularly those from the textile sector. Owing to their high solubility, chemical stability and toxic potential, improper disposal poses a significant environmental risk. Microbial consortia that couple biosorption with biodegradation have emerged as sustainable alternatives to conventional physico-chemical treatments. This study aimed to evaluate the removal of the azo dye Congo Red by pure and mixed cultures of Bacillus subtilis and Pseudomonas aeruginosa and to test whether immobilising the consortium in a synthetic matrix could enhance the system’s stability and reusability. The strains were reactivated and grown in TSB broth, and their compatibility was confirmed in co-cultures. Dye decolourisation assays were then carried out at 100, 200 and 300 mg/L for 48 h, distinguishing biosorption from biodegradation through heat-inactivated cells, desorption tests and FTIR analysis. Biofilm formation was quantified in microplates, and the consortium was immobilised on sterilised polyurethane foam and subjected to three batch cycles using simulated textile effluent. The consortium removed 95±3% of the dye at 100 mg/L and 82±4% at 200 mg/L, outperforming the individual cultures. Efficiency dropped to 54±6% at 300 mg/L, indicating inhibition at higher concentrations. Desorption remained below 12%, and FTIR revealed a 68±5% reduction in the azo band at 1580 cm⁻¹, confirming biodegradation as the main mechanism. B. subtilis exhibited the higher biofilm index, whereas P. aeruginosa initiated azo-bond cleavage. Immobilisation allowed dye removal above 70%. These results demonstrate that an immobilised bacterial consortium is a promising strategy for the biological pre-treatment of textile effluents containing Congo Red.
Seriemas universitárias: comportamento, ciência cidadã e educação ambiental nas redes sociais
(Universidade Federal de São Carlos, 2025-07-23)
Borgato, Maira Cristina Piovesana
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Piratelli, Augusto João
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https://lattes.cnpq.br/4747322084219058
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https://orcid.org/0000-0003-0268-4007
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https://lattes.cnpq.br/6577639909831348
The Red-legged Seriema (Cariama cristata) is an omnivorous species and its opportunism in establishing itself in urban environments demonstrates its environmental plasticity. However, proximity to human-modified environments brings various threats to the species, such as roadkill, inadvertent domestication, and interactions with domestic animals. Furthermore, frequent contact with the local community presents opportunities for developing environmental education initiatives. The objective of this study was to describe the life history of a seriema found in the territory of the Federal University of São Carlos - Sorocaba Campus, as well as to disseminate this knowledge through non-formal environmental education on social media. For behavioral analysis, flight distance sampling, direct observations of the species, and the dissemination of an online questionnaire for data collection via citizen science were conducted. Behaviors were classified into categories based on previous studies. For informal environmental education, profiles were created on Instagram and Facebook, whose effectiveness was assessed using an online questionnaire. During direct observations (38h19min), natural behaviors and those resulting from proximity to the urban environment were identified. The emergence of a second individual and reproduction of the species were observed. Initial flight distances showed significant differences between the initial and final samplings. Through citizen science, 248 records of the species were obtained. Nineteen informative posts about the species and related topics were published on social media. In the evaluation questionnaire, 90.7% (37) rated the language used as very accessible, 97.7% (42) acquired new knowledge, 100% (43) felt more sensitized by the species and the topics covered, and 95.3% (41) reported that they would follow other profiles with similar content. This study contributed to broadening the understanding of how Cariama cristata adapts to human-modified environments and how social media can be an ally in environmental education and scientific dissemination.
PDARTS: busca de arquitetura neural diferenciável para inversão sísmica
(Universidade Federal de São Carlos, 2025-07-23)
Souza, Lucas Candiani
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Naldi, Murilo Coelho
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https://lattes.cnpq.br/0573662728816861
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https://lattes.cnpq.br/3436620822478270
;
https://orcid.org/0000-0001-9922-6445
Seismic inversion is an inverse problem that minimizes both amplitude and phase differences between simulated signals and real observed signals through an optimization problem. Due to its high computational cost and the industry demand for higher resolution, researchers often explore ways to accelerate the process and improve its accuracy. In the last decade, deep learning emerged as a promising alternative for seismic inversion; however, still demanding laborious trial and error processes, integration of domain knowledge, and hyperparameter tuning. To improve model architectures for this task, this paper introduces PDARTS (Projected Differentiable Architecture Search), a method inspired by DARTS which aims to leverage the generalization capability of neural blocks such as Fourier and U-Fourier blocks for the seismic inversion task. Because Fourier-based blocks rely on Fourier transforms, which require square inputs, the asymmetric shape (height, width) of original seismic data necessitates enforcing a square input format to ensure proper operation. To achieve this, PDARTS employs fixed encoder layers connected to a projection layer to reshape spatial dimensions and a convolutional layer to mitigate noise. The decoder, along with the final layers of the encoder, is implemented as a DARTS supernetwork, where neural architecture search (NAS) is conducted to explore the potential of Fourier and U-Fourier neural blocks, aiming to discover new neural networks with better performance. Experiments demonstrated that the best architecture discovered by our method, PDARTSNet, outperforms current state-of-the-art neural networks for seismic inversion. Furthermore, it demonstrates that despite the increased number of network parameters and consequent higher computational costs, PDARTS has proven capable of discovering neural networks with superior performance for seismic inversion.
As PANCs e a cultura caipira como estratégias para a educação ambiental
(Universidade Federal de São Carlos, 2025-07-23)
Huggler, Hemille
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Mariano, Neusa de Fátima
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https://lattes.cnpq.br/5003743301847104
This undergraduate thesis aim to investigate how Unconventional Food Plants (PANCs), in conjunction with the traditional knowledge of São Paulo's caipira culture, can be used as pedagogical strategies to promote Environmental Education in Science teaching. Through a qualitative literature review and document analysis of public policies, the study discusses the impacts of food globalization, the erasure of traditional knowledge, and the importance of localized educational practices. The study is grounded in the theoretical contributions of Bourdieu, Brandão, and Paulo Freire, it addresses the role of Biology teaching in valuing biodiversity and local food culture. As an educational product, an illustrated guide for implementing school gardens with PANCs was developed, aimed at middle and high school levels. The guide proposes interdisciplinary and context-based activities that foster food autonomy, environmental awareness, and cultural belonging among students.
Química verde aplicada à nanotecnologia: estratégias sustentáveis para a síntese de nanopartículas
(Universidade Federal de São Carlos, 2025-07-23)
Müller, Gabrirela Frutuozo
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Camargo, Emerson Rodrigues de
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https://lattes.cnpq.br/7720754304065239
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https://lattes.cnpq.br/3843923633326058
This paper explores the crucial role of nanoparticles within Green Chemistry, pinpointing solutions that reduce environmental harm and foster more sustainable industrial processes. Through a comprehensive literature review, we delve into the core principles of Green Chemistry and the immense potential of nanotechnology. This is especially evident in the use of nanoparticles as catalysts, in effluent purification, and across various industrial and environmental applications. Thanks to their unique nanoscale properties, these particles offer innovative and effective ways to make industrial processes less polluting and more efficient in terms of natural resource use. A key highlight is the emerging field of green nanoparticle synthesis, which leverages natural and biological sources as a promising alternative to more aggressive traditional techniques. The study also underscores the importance of the mindful application of these technologies, considering potential risks to both human health and the environment. We advocate for the establishment of clear guidelines to ensure the long-term safety and sustainability of these practices. By showcasing concrete examples of green synthesis, we can deepen our understanding of nanoparticles' role in Green Chemistry, bridging the gap between theory and practical application and paving the way for sustainable innovation. Furthermore, comparing these green routes with conventional methods clearly demonstrates their transformative potential, particularly when integrated with Life Cycle Assessment and responsible environmental regulation.
Interferência da inoculação de Nitrospirillum amazonense na capacidade competitiva de mudas pré-brotadas de cana-de-açúcar e toxicidade de herbicidas à bactéria
(Universidade Federal de São Carlos, 2025-07-23)
Jonck, Luana Carolina Gomes
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Magri, Marcia Maria Rosa
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https://lattes.cnpq.br/4166319985147604
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https://orcid.org/0000-0003-3541-1240
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Monquero, Patricia Andrea
Inoculation with Nitrospirillum amazonense promotes biological nitrogen fixation (BNF) and phytohormone production, which can influence the competitiveness of sugarcane pre-sprouted seedlings (PSS) against weeds. However, pre-emergence herbicides may be toxic to bacterial cells. Therefore, the objective of this study was to evaluate the impact of inoculation with Aprinza (N. amazonense) on the competitiveness of sugarcane PSS, as well as the effect of weed competition on the rhizosphere microbiota, and to assess the toxicity of pre-emergence herbicides to bacterial cells. The competitiveness of sugarcane PSS was evaluated in a completely randomized design (CRD) in a 4×2 factorial arrangement. Three weed species (Merremia aegyptia, Urochloa decumbens, and Cyperus rotundus) were assessed at four densities (10, 20, 40, and 80 plants/m²), coexisting with PSS in the presence or absence of inoculation with N. amazonense, in addition to controls (PSS only, with and without inoculation). At 90 days after transplanting (DAT), seedlings were evaluated for height (cm), leaf area (cm²), shoot dry biomass (g), and root dry biomass (g). Also at 90 DAT, rhizospheric soil was analyzed for bacterial and fungal diversity through soil metataxonomic analysis, using DNA extraction and sequencing targeting the bacterial 16S rDNA and fungal ITS intergenic regions. Microbial activity was assessed by measuring the activity of β-glucosidase and arylsulfatase enzymes using the p-nitrophenol quantification method. To evaluate herbicide toxicity to N. amazonense, four in vitro assays were conducted. In the first assay, nine pre-emergence herbicides registered for sugarcane (clomazone, imazapic, tebuthiuron, indaziflam, S-metolachlor, metribuzin, isoxaflutole, sulfentrazone, and flumioxazin) were assessed for their minimum inhibitory concentration (MIC). Herbicides were tested at five doses corresponding to 1/4, 1/2, 1, 1.5, and 2 times the commercial dose (CD), along with a control treatment without herbicide. In the second assay, the resistance of N. amazonense to the application of the same herbicides in soil was evaluated by quantifying the Most Probable Number (MPN) of colony-forming units (CFU) of N. amazonense per gram of soil using the McCrady table. The third assay assessed the impact of herbicides on the bacterium's BNF capacity in nitrogen-free semi-solid NFb medium using the semi-micro Kjeldahl digestion method. Lastly, the fourth assay examined the effect of herbicides on indole-3-acetic acid (IAA) production by the bacterium. Bacterial cells were analyzed by the colorimetric method using the Salkowski reagent. Inoculation with N. amazonense led to increases only in the height of PSS under competition with U. decumbens. A significant interaction between inoculation and plant density was observed only for the leaf area parameter in PSS competing with M. aegyptia. Inoculation induced a negative correlation between increasing M. aegyptia density and a reduction in seedling leaf area. The presence of U. decumbens, M. aegyptia, and C. rotundus caused reductions in the height, shoot biomass, and leaf area of PSS, regardless of inoculation with N. amazonense. Microbial inoculation and weed competition did not significantly alter the structure of the bacterial and fungal communities or the enzymatic activity of the rhizospheric soil of PSS. However, taxa attributed to the genus Nitrospirillum (classified as Azospirillum in the reference database used) were found only in the inoculated PSS treatments and inoculated PSS under competition with U. decumbens. Different herbicide molecules elicited distinct responses in the survival and functional activity of N. amazonense. Indaziflam, metribuzin, S-metolachlor, and sulfentrazone did not affect bacterial survival or functionality, but promoted increased cell growth and stimulated IAA production and/or BNF. Isoxaflutole stimulated bacterial growth at sublethal doses; however, it exhibited inhibitory effects at commercial application rates, while not interfering with IAA production or BNF capacity. Clomazone and imazapic, when added to the culture medium, reduced bacterial growth but did not affect survival in soil, and increased IAA production and BNF. Flumioxazin and tebuthiuron stimulated bacterial growth and BNF but reduced IAA production. Under the conditions of the present study, it can be concluded that although N. amazonense shows potential, inoculation was not able to mitigate the adverse effects of weed competition on the growth of pre-sprouted seedlings, suggesting that methodological adjustments or complementary practices are necessary to increase its efficacy. Furthermore, our results highlight the importance of a careful selection of herbicides, considering not only their acute toxicity but also their differential effects on essential microbial processes, thereby favoring synergistic strategies that combine effective weed control with the use of microbial inoculants.
Nanocerâmicas transparentes e funcionais: síntese, caracterização e fabricação de materiais transparentes baseados em granada-ítrio-alumínio e lantanídeos similares
(Universidade Federal de São Carlos, 2025-07-24)
Cruz, Igor Barbosa
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Leite, Edson Roberto
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https://lattes.cnpq.br/1025598529469393
;
https://orcid.org/0000-0002-0513-9939
;
https://lattes.cnpq.br/1702761246232485
This research is motivated by the production of yttrium–aluminum garnet (YAG), a transparent ceramic with a cubic crystalline structure that exhibits technologically relevant applications, such as solid-state lasers used in medicine, military defense, and industry. When doped with cerium (III) atoms, it is employed as an X-ray scintillator, serving as a detector in the Sirius beam-lines located at the CNPEM campus in Campinas (SP). Based on a selected article from the literature, a detailed study of the conditions of the co-precipitation synthesis method was conducted with the aim of improving the production of the material (powders and pellets). After obtaining a single-phase system, this knowledge was extended to advance the fabrication of other garnets, such as lutetium–aluminum garnet (LuAG) — employed as a scintillator for high-energy X-rays — and terbium–aluminum garnet (TAG), used as a matrix in various optical–magnetic devices. The powders obtained were analyzed by X-ray diffraction (XRD), and the results indicated the achievement of a pure phase after calcination at 1100 °C for 3 hours. Transmission electron microscopy (TEM) analyses provided essential in-formation regarding the particle size and morphology, revealing an average diameter of approximately 43 nm and faceted structures at the same temper-ature. Upon examining the XRD data of the produced pellet, a secondary phase was identified in the initial materials, and its nature was confirmed by additional investigations using scanning electron microscopy (SEM). Subse-quently, the analysis of the calcined powder by TEM corroborated the presence of a secondary alumina phase on its surface. Adjustments were implemented in the synthesis process to optimize the dispersion of both the pre-cipitate and the powder. At the conclusion of the research, it was possible to resolve the formation of the secondary phase, achieving single phase materials as confirmed by the XRD and SEM analyses.
Proliferação da desinformação sobre religiões de matriz africana no Brasil: desafios para a Ciência da Informação
(Universidade Federal de São Carlos, 2025-07-24)
Aguinelo, Vitória de Freitas Ramos
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Gracioso, Luciana de Souza
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https://lattes.cnpq.br/4898201916360294
This paper investigates the impacts of disinformation and fake news on African-based religions in Brazil, such as Candomblé, Umbanda, Quimbanda, Ifá, and Vodum. These religious manifestations have been constant targets of both symbolic and material attacks, reinforced by misleading content disseminated especially through social media and hegemonic religious discourses. The research aims to highlight how Information Science can contribute to combating disinformation and promoting religious freedom. Using the bibliographic review methodology, the study analyzes statistical data, as well as media and academic reports, that demonstrate the effects of religious intolerance and religious racism in the daily lives of practitioners of these religions. The results indicate that disinformation is intertwined with colonial and Eurocentric power structures, contributing to the erasure of Afro-Brazilian ancestral knowledge and the perpetuation of symbolic violence. The paper reaffirms the importance of an ethical and anti-racist approach in the field of information.
Análise de textura em imagens de tomografia computadorizada de feixe cônico de regiões da mandíbula afetadas por displasia
(Universidade Federal de São Carlos, 2025-07-24)
Alves, Isabela Dias
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Belini, Valdinei Luís
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https://lattes.cnpq.br/2364419655591136
Background: Bone dysplasia is a type of lesion of the human jaw, as determined by visual inspection of computed tomography images. The limited ability of the human eye to distinguish gray levels, coupled with visual fatigue and tiredness, can result in misdiagnosis and, consequently, inappropriate treatment. Objective: The objective of this study was to quantify visual characteristics in computed tomography images of lesions caused by dysplasia. Materials and Methods: Seven cone-beam computed tomography images of patients diagnosed with dysplasia were retrospectively screened. Regions of interest (ROIs) were selected by a radiologist and subsequently processed using conventional and adaptive contrast enhancement techniques. First-order (mean, standard deviation, skewness, kurtosis, entropy) and second-order (contrast, brightness, homogeneity, energy) texture descriptors were applied to the processed ROIs to quantify radiographic aspects of dysplasia lesions. Results: A total of nine texture descriptors were calculated for each region of interest. Comparisons between texture feature values revealed numerical differences between the healthy and dysplasia regions. The mean, asymmetry, and entropy features differed significantly between the healthy and dysplastic regions. Contrast, homogeneity, and energy also exhibited observable differences for the two regions. Conclusions: This study focused on quantifying radiographic changes in computed tomography images of lesions caused by dysplasia in the human jaw bone. Direct comparisons revealed numerical differences for most texture features between the healthy and dysplasia regions. Although the results are numerically distinct, their significance still needs to be investigated in future stages through statistical tests applied to a larger number of images. Novelty: The study's novelty lies in the quantification of radiological alterations in areas of the mandible affected by dysplasia. Clinical Relevance: Unlike qualitative analysis through visual inspection, which is costly and subjective, the use of a more systematic and non-subjective method, such as the one proposed, has the potential to facilitate diagnoses in routine dental clinical practice. Knowledge Advances: There is a gap in the literature regarding the use of texture analysis to characterize subtypes of lesions caused by dysplasia. In this preliminary study, one type of lesion was characterized, and the procedure developed can be reproduced to characterize other lesion subtypes.
Experiência e metodologias ativas: análise de dissertações e proposta didática
(Universidade Federal de São Carlos, 2025-07-24)
Rodrigues, Daniel Felipe Pereira Laureano
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Gama, Renata Prenstteter
;
lattes.cnpq.br/4153572041829838
;
https://orcid.org/0000-0001-6338-4345
The primary methodological foundation of basic education is traditionalism, a name given to the perpetuation of a structure that focuses on the teacher as the main agent. However, there are approaches that allow for the use of alternative methodologies. Among these possibilities, some prioritize student knowledge and actions and are therefore called active methodologies. One approach is experience-based, which prioritizes student experiences. In this context, this paper aims to understand the concept of student experience in mathematics classes. To this end, we describe and analyze the concept of experience in dissertations that explore mathematics teaching through the use of active methodologies in elementary school, high school, or adult education (EJA). We also propose and implement a didactic sequence to identify and understand the relevance of student experience manifestations. Therefore, the research was divided into two phases. The first consists of a systematic review using the Brazilian Digital Library of Theses and Dissertations (BDTD). The second is a teaching proposal to be implemented in the weekly Education and Citizenship Preparatory Course class at UFSCar, Sorocaba campus. Of the 81 selected papers, 8 were selected for reading and analysis. Many papers were developed during the pandemic, which made the flipped classroom methodology the most common. Regarding the experience, all the dissertations contain theoretical principles consistent with the theoretical foundation of this work. However, when analyzed by teaching sequences, only three dissertations incorporate and articulate the experience in the development of the proposals. The second phase consisted of developing and implementing a three-stage teaching proposal at the Education and Citizenship Preparatory Course at UFSCar - Sorocaba campus. The first phase of the flipped classroom had low participation, which seems to indicate a hint of traditionalism in the face of an active approach. The second phase required adaptation to facilitate the activity in groups, which took different approaches to solving the problem. One group first discovered a problem and then detected the numerical data, while the other set out to search for data to analyze the range of possibilities and then decide which to select and why. The third phase, centered on presenting the results, revealed, despite initial hesitation on the part of the students, a systematization of the vivid learning process and the expression of student experiences that influenced decision-making in developing the proposal.
Escrita e silenciamento: os banheiros femininos da UFSCar como espaço de resistência
(Universidade Federal de São Carlos, 2025-07-24)
Bueno, Michelle Silva Veloso
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Baronas, Roberto Leiser
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http://lattes.cnpq.br/4613001301744682
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http://lattes.cnpq.br/8069391957289761
;
https://orcid.org/0009-0002-6605-0759
This study analyzes phrases written on the walls of women's restrooms in the academic blocks (ATs) at UFSCar, understanding these writings as forms of resistance and expressions of silenced voices. The corpus consists of twelve phrases denouncing harassment, racism, authoritarianism, and institutional conflicts. The research adopts an analytical procedure aimed at breaking with apparent meanings in the texts, revealing contradictions, silencing, and resistance processes, based on authors such as Pêcheux, Maingueneau, and Foucault. Analyses are conducted at three levels: syntactic, semantic, and discursive, also considering concepts like paratopia, heterotopia, and resistance. The study shows that, despite being a marginal space within the university, the restroom becomes a site of speech and denunciation where voices that usually lack formal platforms find expression. The phrases do not necessarily follow standard norms but still produce meaning and carry marks of pain, anger, belonging, and struggle. These utterances challenge the idea of adherent discourse and reveal a discourse full of conflicts and silencing. The research highlights the importance of paying attention to marginal spaces and how they are used to break institutional silencing. As a continuation, it is suggested to expand the corpus and analyze men's restrooms to understand other forms of manifestation.
Desigualdade social na literatura infantil brasileira contemporânea: análise do catálogo de três editoras
(Universidade Federal de São Carlos, 2025-07-24)
Lima, Natasha Brum de
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Gatti, Márcio Antonio
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https://lattes.cnpq.br/0369563657842763
;
https://lattes.cnpq.br/8636754112401242
This work critically analyzes the presence and representation of social inequality, especially poverty, in contemporary Brazilian children's literature, focusing on the catalogs of three major publishers: Companhia das Letrinhas, Editora FTD, and Expressão Popular. Based on specific selection criteria, it investigates how these publishers address sensitive social themes, considering their editorial proposals and available works. The results show that despite advances in including topics such as racial diversity and cultural plurality, poverty remains underrepresented or marginally addressed in commercial publishers. In contrast, Expressão Popular stands out with an editorial line that directly confronts inequalities, focusing on critical formation and the visibility of marginalized childhoods. The article emphasizes the need to expand access to and circulation of these narratives, particularly in schools and libraries, to foster a more plural, ethical, and socially transformative children's literature.
Anotação e caracterização de fenômenos léxico-ortográficos em tweets do mercado financeiro
(Universidade Federal de São Carlos, 2025-07-24)
Oliveira, Gabriela Pinheiro de
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Di Felippo, Ariani
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https://lattes.cnpq.br/8648412103197455
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https://orcid.org/0000-0002-4566-9352
;
https://lattes.cnpq.br/2432226082462782
With the growth of digital media and social networks, the importance of user-generated content (UGC) has increased considerably, creating demand for Natural Language Processing (NLP) tools and applications capable of handling the predominantly non-canonical language found across UGC genres. Annotated corpora are essential resources for this purpose, as are the description and analysis of their linguistic characteristics. Among these resources, corpora composed of tweets/posts stand out, given the relevance of the Twitter/X platform for various segments of society. In this undergraduate thesis, the manual annotation of lexical-orthographic phenomena in the financial-market tweet corpus known as DANTEStocks was further advanced. This annotation effort, which covered approximately 75% of the total tweets, enabled a preliminary characterization of the corpus based on a hierarchical typology of classes, types, and subtypes designed to capture creative phenomena and variation with respect to the standard norm.
Relação entre sustentabilidade e risco financeiro: lacunas na literatura e evidências empíricas no mercado brasileiro
(Universidade Federal de São Carlos, 2025-07-24)
Camacho, Luisa Morais
;
Albuquerque, Andrei Aparecido de
;
https://lattes.cnpq.br/9667573506903226
;
https://lattes.cnpq.br/3723179852652172
In recent decades, sustainability has become a widely discussed topic, prompting companies to adopt ESG practices not only to comply with regulatory requirements but also as part of their business strategies. This dissertation, structured in two articles, aims to evaluate whether the adoption of such practices influences financial risks in the Brazilian market. The first article presents a Systematic Literature Review based on the PRISMA protocol methodology, which enabled a thorough analysis of the existing literature and revealed a significant lack of studies on the topic in Latin America — less than 1% of the publications found. Addressing this gap, the second article empirically tests, through Panel Data Regression, the relationship between financial risk — represented by the Z”-Score and Beta proxies — and three Brazilian sustainability indices (ISE, ICO2, and IGC-NM), operationalized as dummy variables. The study analyzed 225 publicly traded Brazilian companies between 2017 and 2023, using three distinct estimation methods: Fixed Effects, Generalized Least Squares (XTGLS), and Generalized Method of Moments (GMM). The results indicated that companies listed in the ISE and ICO2 indices tend to exhibit higher Z”-Scores, suggesting lower financial risk, while those in the IGC-NM index showed higher financial risk. Regarding Beta, the effects of ESG practices were less consistent, with a notable result for ICO2 companies, which demonstrated lower financial risk under one estimation method. Overall, the findings suggest that companies included in the ISE and ICO2 sustainability indices are associated with lower financial risk, whereas the IGC-NM index yielded inconclusive results. Together, the studies underscore the importance of expanding the understanding of ESG effects both in international and Brazilian contexts, and encourage managers and researchers to further explore the relationship between ESG practices and financial risk.
Aconselhamento linguageiro na aprendizagem de Libras como língua adicional à luz da teoria da complexidade
(Universidade Federal de São Carlos, 2025-07-24)
Marques, Anderson
;
Borges, Elaine Ferreira do Vale
;
https://lattes.cnpq.br/8872819626199594
;
https://orcid.org/0000-0001-8310-3539
;
https://lattes.cnpq.br/7112238825025462
This thesis examines the process of teaching and learning Brazilian Sign Language (Libras) as an additional language (PEALibras-LAd) through the lens of Complexity Theory (Larsen-Freeman & Cameron, 2008; Paiva, 2011), framing it as a Complex Adaptive System (CAS). Despite the growing visibility of Libras as an additional language in Brazil, research on its teaching from a complexity perspective remains scarce. The goal of this study is to investigate how language advising (LA) can contribute to PEALibras-LAd, particularly in fostering learner autonomy and motivation. The study was conducted in a Brazilian federal university with undergraduate students training to become translators and interpreters of Libras. Its objectives are to discuss the role of the language advisor in this process, reflect on the impact of motivation on learning, highlight the importance of autonomy, and analyze the articulation between advisor and language teacher. Methodologically, this qualitative and interpretivist research draws on Complex Thought Modeling (CTM), combining field notes with retrospective analysis (Larsen-Freeman, 2011). The researcher’s role as advisor enabled observation of PEALibras-LAd at multiple levels, bridging theory and practice. The analysis followed four stages: (1) construction of a CTM based on the advisor’s (self-)reflections; (2) modeling PEALibras-LAd as a CAS, with emphasis on language development, learning at the edge of chaos, and the tension between cartesian and complex curricula; (3) discussion of emergent hypotheses concerning motivation and autonomy; and (4) reflection on the relation between advisor and complex teacher. Findings indicate that PEALibras-LAd operates as a CAS that requires sensitivity to emergent dynamics, recognition of the advisor’s role as a mediator of reflection and support, and a teacher profile aligned with the advisor’s, capable of collaboratively promoting autonomy and motivation in Libras learners.
Influência dos recursos didáticos na motivação dos alunos em aprender Ciências em duas escolas PEI de São Carlos-SP
(Universidade Federal de São Carlos, 2025-07-24)
Oliveira, Alan Moura de
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Santos, Mariana dos
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lattes.cnpq.br/3185238960982642
;
https://orcid.org/0000-0002-1834-5467
This study investigated the influence of the availability of teaching resources on students’ motivation to learn Science in two Full-Time Schools (PEI) in the municipality of São Carlos-SP, with contrasting infrastructure contexts. The research adopted a mixed-methods approach, combining Likert-scale questionnaires and open-ended questions, applied to 9th-grade teachers and students. The results revealed significant differences in students’ perceptions regarding motivation and engagement, with School A standing out for its greater variety of teaching resources. In contrast, School B, with limited infrastructure, showed lower average motivation, although qualitative reports indicated teacher mediation as an essential factor in minimizing material deficiencies. Data analysis suggests that the presence of teaching resources contributes to more engaging lessons, active participation, and better understanding of complex content. Nevertheless, even in contexts of scarcity, the teacher’s role can offset part of the structural limitations, provided there is appreciation and pedagogical autonomy. The research highlights the importance of teaching resources as fundamental elements for a more equitable, participatory, and meaningful education, especially in peripheral areas where structural inequalities are most pronounced.