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Dor crônica musculoesquelética e fatores associados em docentes universitários brasileiros
(Universidade Federal de São Carlos, 2025-09-16)
Pinto, Mônica Jordão de Souza
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Hortense, Priscilla
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https://lattes.cnpq.br/2877373025374516
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https://lattes.cnpq.br/7153278628783234
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https://orcid.org/0000-0003-0144-6680
Caracterização da criação de abelhas como subsídio para políticas públicas voltadas ao desenvolvimento da meliponicultura e apicultura em Araçoiaba da Serra, Estado de São Paulo
(Universidade Federal de São Carlos, 2025-09-16)
Manrique, Allas Henrique Haro
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Silva, Elaine Cristina Mathias da
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https://lattes.cnpq.br/3993998796939609
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https://orcid.org/0000-0001-5447-2765
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Toppa, Rogério Hartung
Considering the importance of bees in their ecosystem services, it is understood that a fundamental process for the conservation of the biodiversity of these insects is rational breeding in line with public policies that subsidize breeders with different realities. To this end, recognizing the actors involved in the activity and their other characteristics is essential to know which paths to follow. In this sense, we sought to characterize local meliponiculture and beekeeping, aiming to identify the profile and aspects of bee breeding in the city of Araçoiaba da Serra, state of São Paulo, in order to support public policies that promote the development of the activity, based on bee conservation. To obtain the data, a semi-structured online questionnaire was used in the Google Forms® tool, widely disseminated digitally, and answered in person, obtaining 35 respondent breeders. The responses obtained were organized, tabulated, and analyzed using Microsoft Excel software, seeking qualitative and quantitative analysis. Jamovi software was used for statistical analysis between variables. It was identified that meliponiculture practitioners have independent activities, seeking help from their neighbors, while beekeepers are organized into a regional cooperative and need local instruments that contribute to better conditions for selling their products. The activity is practiced mainly for conservation and as a hobby, without technical support for improvements in management. This study contributed to obtaining data on the characterization of bee farming in the municipality of Araçoiaba da Serra, in the state of São Paulo, so that public authorities can recognize the actors involved in the activity and thus establish public environmental policies focused on the topic.
Fotodegradação no UV-C e fotoestabilização em polímeros utilizados na indústria médico-hospitalar
(Universidade Federal de São Carlos, 2025-09-17)
Gimenez, Jessica Caroline Ferreira
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Homem, Manoel Gustavo Petrucelli
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Helal, Emna
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https://lattes.cnpq.br/2059356773212608
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https://orcid.org/0000-0002-6640-664X
The cross-contamination concerns that came to light during the SARS-CoV-2 pandemic in 2019 emerged the use of UV-C germicidal lamps. However, despite its proven efficiency against pathogens, UV-C light promotes damage in materials such as polymers. While there is extensive literature on polymer photodegradation under UV-A and UV-B, studies on UV-C remain scarce. This gap formed the basis of the present work, which aims to provide a comprehensive understanding of UV-C effects on polypropylene (PP), a commodity polymer used in syringes, and poly(ether sulfone) (PESU), a high-performance polymer used in medical structural equipment, as well as to evaluate strategies for their photostabilization. Our findings reveal that PP became unstable during rheological measurements, displaying an unusual increase in the complex viscosity. 1H Time Domain NMR indicated that UV-C favors branching reactions over crosslinking. A Design of Experiment was employed to determine optimal PP photostabilization when combining titanium dioxide (TiO2) with few-layer graphene (FLG) or Irganox B215 (B215). Electron Paramagnetic Resonance showed that incorporating radical scavengers with TiO2 reduced hydroxyl formation by ~30% for the FLG mixture and ~25% for the B215 mixture. The study also compared continuous and cyclic UV-C exposure modes in PESU. Tensile tests demonstrated that even 1 hour of UV-C exposure significantly reduced PESU’s mechanical performance. Infrared, XPS, and rheological analysis revealed more pronounced changes in samples under cyclic exposure. Finally, PESU/FLG and PESU/graphene oxide (GO) were exposed under UV-C irradiation. Infrared results showed that FLG mitigated hydroxyl formation, while GO composites had a minimal effect. Tensile tests revealed that UV-C considerably increased the Young’s Modulus. This work provides remarkable findings into UV-C photodegradation and photostabilization of PP and PESU, highlighting subtle differences in the degradation mechanisms induced by UV-C and presenting strategies for photoprotection.
A pseudorrevolução da Reforma do Ensino Médio e suas implicações na rede pública do Distrito Federal
(Universidade Federal de São Carlos, 2025-09-18)
Nascimento, Juvenilto Soares
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Nosella, Paolo
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https://lattes.cnpq.br/7159165045266256
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https://orcid.org/0000-0001-6272-9073
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https://lattes.cnpq.br/3029628080521084
The objective of this research is to investigate the implications of the High School Reform (Law nº 13,415/2017) for public schools in the Federal Distrito (Brazil) educational network, based on the expressed diagnosis and intentions presented to justify it. To this end, both a documental and an empirical study were conducted in schools within the DF education system. The documentary research involved the analysis and comparison of the Statement of Justification nº 084/2016 and Law nº 13,417/2017. During the empirical research, in the second half of 2023, 14 questionnaires – comprising open and closed questions – were administered to principals of public high schools, with one school chosen per Regional Education Coordination (CRE). The research is oriented by dialectical historical materialism, with analyses advanced through the theoretical contributions of Gramsci. Stemming from an opportunistic move by hegemonic groups to maintain educational inequalities, the Reform imposes earlier professionalization and a retention function on the formal education of the poorest youth, while promoting the advance of privatization, thus operating a kind of hybridization in the administrative nature of public education. The documentary analysis highlights that the Secondary Education Reform of the Temer administration presents a partial diagnosis of this educational level in Brazil, while offering propositions that oscillate between incongruent and insufficient, failing to address concrete structural problems but reinforcing duality and deepening inequalities. Among the results of the empirical research in the Federal Distrito education network, the devastating impact on general basic education, compromising the education of the poorest youth, is evident. Further findings include the precarious and insufficient offering of professional training pathways, despite the fetishism promoted around them, and the lack of critical discussion about the Reform's privatization among the surveyed principals. None of the principals believed that the New Secondary Education was the best version for their students' needs, while 3 (21%) thought the previous model was better. However, 11 (79%) of these principals recognize the need for a new model, one that goes beyond the last two. While 6 of them signaled satisfaction with a model that would merely "reform the Reform," 5 expressed a longing for a model marked by qualities that point toward the unitary school: 1) guided by the political decision to genuinely prioritize education; 2) with sufficient investment; 3) offering equal conditions and opportunities for all; 4) developed through the effective participation of teachers; and 5) willing to address concrete needs. It is, therefore, imperative that a new policy be implemented, one grounded in the concrete needs of young people, wich moves towards unitary education, providing a broad and humanista formation for all students, in order to overcome the historical duality and foster, among others things, the democratization of the training of future leaders.
Triplet spin delocalization and temperature dependence for adiabatic and non-adiabatic Z−E isomerization pathways in azoarenes
(Universidade Federal de São Carlos, 2025-09-18)
Martins, Francisco Antonio
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Viesser, Renan Vidal
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Schober, Joao Vitor
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Herges, Rainer
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Wu, Judy I-Chia
Photoswitching molecules like the azoarenes have myriad potential applications ranging from energy storage to targeted drug delivery. Upon irradiation, azoarenes convert from an E-form to a Z-form. The Z-form can thermally revert to the E-form through a classical-adiabatic or a triplet-assisted rotational mechanism. We show that strategic placements of heteroatoms and substituents can modulate spin delocalization in the triplet state, thereby tuning the S0–T1–S0 crossing points. Increased spin delocalization lowers the crossing point and shortens the thermal half-life of the Z-form. Computed spin densities at the diazo N atoms, along with computed S0–T1–S0 crossing points, activation entropies, and rate constants for 15 azoarenes are compared with available experimental data. There is evidence that some of the studied Z–E isomerizations proceed simultaneously via a classical-adiabatic and a triplet-assisted mechanism. The ratio of the two reaction pathways is temperature-dependent. Triplet spin density at the diazo N atoms is recognized as a useful indicator for predicting the thermal half-lives of these species.
Estrutura para apoiar a decisão de alocação de recursos integrando critérios de vulnerabilidade em comunidades carentes
(Universidade Federal de São Carlos, 2025-09-19)
Dorado, Luis Alberto Araujo
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Vieira, José Geraldo Vidal
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https://lattes.cnpq.br/2068340476477363
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https://orcid.org/0000-0002-5913-2652
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https://lattes.cnpq.br/7701644218436964
This dissertation addresses the challenge of allocating resources to underserved communities, recognizing the structural complexity that characterizes these territories, marked by interdependent social, economic, and environmental inequalities. Given this reality, the central objective of the study was to propose a framework to support resource allocation decisions that integrates vulnerability criteria in underserved communities. The methodological approach involved identifying and selecting indicators through a systematic literature review and the use of secondary databases, culminating in the construction of a Composite Vulnerability Index (CVI). These indicators were weighted using the Swing Weighting (SW) method, enabling their aggregation into a single metric. The data were then spatialized in a Geographic Information Systems (GIS) environment, used as a comparative visualization tool across the analyzed regions. Subsequently, the IVC was incorporated as a criterion in the multi-criteria decision model, developed using the Multi-Attribute Value Theory (MAVT) approach and operationalized in the VISA software, which also integrated intervention costs and preferences for public resource categories. These preferences were defined based on an interview with a decision-maker responsible for Social Assistance Reference Centers (CRAS). Based on this, a case study was conducted in the municipality of Sorocaba, São Paulo. The results demonstrate that the proposed framework is capable of synthesizing multiple dimensions of vulnerability and supporting decision-making based on transparent and territorially informed criteria. Although the IVC identified regions such as Ipiranga, Vila Helena, and Laranjeiras as the most vulnerable territories, the decision-making stage with MCDA prioritized Laranjeiras, Ipiranga, and João Romão, demonstrating partial convergence between the technical indicators and the final prioritization of the areas. Limitations include the difficulty of standardizing indicators in per capita terms and restrictions associated with terminology to characterize underserved communities, in addition to the limited perspective of a single decision-maker. These limitations point to avenues for future research, including the use of more granular primary data and increased community participation in defining criteria and weights.
Effect of local chemistry on the thermodynamic modeling of multicomponent alloys for hydrogen storage
(Universidade Federal de São Carlos, 2025-09-19)
Pedroso, Otávio Abreu
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Zepon, Guilherme
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https://lattes.cnpq.br/7924187202036614
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https://lattes.cnpq.br/0451136180466494
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https://orcid.org/0000-0002-4470-1656
In this work, a new thermodynamic model for pressure-composition-temperature diagram (PCT) calculations of multicomponent alloys for hydrogen storage was developed and evaluated. The objective of this new model is to evaluate the local chemical effect, that is, the interaction between hydrogen and the first neighbors of the interstitial sites, in the PCT diagrams. Initially, a site blocking model based on the Johnson-Mehl-Avrami (JMAK) equation was proposed to quantify the configurational entropy, taking into account the interstitial sites blocked due to the prior occupation of a nearby neighbor site by hydrogen. The model effectively calculates the fractions of blocked sites, avoiding blocking overlaps that can occur in the studied structures, allowing the accurate determination of partial molar entropy, which showed good agreement with experimental data. A Discrete Site Energy model (DSE) was proposed and implemented in open source code to calculate the thermodynamic properties for metal-hydrogen systems under para-equilibrium conditions. The model considers the different local chemical environments at the interstitial sites of crystalline structures. The model then calculates the Gibbs free energy as a function of the distribution of occupation of the different interstitial sites present in the alloys, which can be determined by minimizing the Gibbs free energy as a function of the fraction of interstitial occupied sites. This model was developed for two classes of multicomponent alloys important for hydrogen storage, alloys with a body-centered cubic (BCC) structure and alloys with a C14-type Laves phase structure. For BCC structures, a validation process was performed using a set of alloys from the TiVNbCr-system, where the calculated results observed describe the plateau pressure well. The DSE model was subsequently applied to C14 Laves phases, where interstitial sites are described by seven distinct Wyckoff positions that introduce cross-blocking effects and distinct local chemical environments depending on the Wyckoff position. After optimizing the metal-hydrogen interaction energies, the model showed good agreement with the experimental results for five C14 alloys. In addition, it was possible to observe the sensitivity of the model to minor energy deviations, attributed to the logarithmic relationship between pressure and the chemical potential of H. These models provide a computationally efficient framework for screening alloy compositions, thereby reducing experimental costs in the design of hydrogen storage materials. The JMAK approaches to site blocking effect and DSE demonstrate versatility across crystal structures, offering critical insights into site-blocking dynamics and phase equilibrium for H storage systems.
Panorama ambiental das áreas verdes intraurbanas nos municípios da região metropolitana de Ribeirão Preto através de inteligência geoespacial
(Universidade Federal de São Carlos, 2025-09-19)
Melo, Breno Malheiros de
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Stanganini, Fábio Noel
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https://lattes.cnpq.br/6774358264004600
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https://lattes.cnpq.br/9560587791358850
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Pedrassoli, Julio Cesar
The present research aims to analyze urban expansion and the transformations in urban green areas within the Metropolitan Region of Ribeirão Preto (RMRP). It leverages the principles of geospatial intelligence and incorporates technological innovations such as cloud computing, remote sensing, and machine learning. This study is driven by the rapid global urban growth, which can lead to significant environmental impacts, including increased greenhouse gas emissions and environmental degradation. This underscores the crucial importance of developing sustainable and resilient cities, requiring new approaches to monitor and understand urban environmental dynamics. The research focuses on the accurate identification of green areas within the RMRP, the historical reconstruction of changes in urban green spaces through remote sensing, the assessment of the impact of these areas on the regional urbanization process, and the exploration of how the resulting data can support integrated regional planning. The study places particular emphasis on urban areas and environmentally vulnerable zones, such as conservation units and aquifer recharge areas.
Baía de Castelhanos: o status de reserva extrativista e sua influência na proteção das comunidades tradicionais e do ecossistema
(Universidade Federal de São Carlos, 2025-09-19)
Massa, Ana Luiza Crozara
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Duval, Henrique Carmona
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https://lattes.cnpq.br/1127516712972199
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https://lattes.cnpq.br/3033430830286081
The Castelhanos Extractive Reserve (RESEX), located on the northern coast of the State of São Paulo, in Ilhabela, has faced uncertainty since August 2022 regarding the potential loss of its legal status. This situation resulted from Law No. 1.546/2022, which extinguished the Reserve without considering public opinion or conducting a technical study. In response, the São Paulo Court of Justice suspended the revocation and granted an injunction declaring the act unconstitutional. Nevertheless, as the legal dispute remains unresolved, the traditional community of Castelhanos continues to live under uncertainty about the future of its territory. In this context, the present study aimed to analyze the perceptions of local fishers and other community members regarding the importance of maintaining the RESEX, investigating their historical relationship with the environment and how ecosystem preservation is intrinsically linked to cultural protection and the continuity of traditional practices. To achieve this, an ethnographic approach was adopted, supported by fieldwork, field diaries, semi-structured interviews, social cartography, and the construction of a seasonal fishing calendar, thereby integrating local and scientific knowledge. The findings demonstrate that the community perceives the RESEX not only as an instrument of environmental protection but also as a mechanism for strengthening cultural identity, social cohesion, and economic sustainability, underscoring the inseparable relationship between culture, territory, conservation, and belonging. The study also revealed external pressures such as real estate speculation, the expansion of large-scale tourism enterprises, and the impacts of climate change, which pose direct threats to both the preservation of the Bay and the community’s way of life. Testimonies emphasized feelings of belonging, tranquility, and security within the territory, while also denouncing legal uncertainties and the challenges of enforcement, which often favor predatory activities such as illegal industrial fishing. It is concluded that the environmental preservation of the Castelhanos Bay can only be fully understood when articulated with the appreciation of traditional ways of life, which ensure both the conservation of natural resources and the cultural and social reproduction of the community. This research contributes to strengthening the struggle for territorial rights, bringing greater visibility to traditional populations, and highlighting the importance of Extractive Reserves as public policies that combine environmental conservation with social justice. The results are expected to provide support for the development of more effective participatory management strategies, as well as encourage further studies on the impacts of real estate speculation and climate change in the region.
Avaliação de corpos de prova submetidos à ensaio de névoa salina utilizando o software Imagej para o processamento de imagens
(Universidade Federal de São Carlos, 2025-09-19)
Corradi, Vitor Bezerra
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Pereira, Ernesto Chaves
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https://lattes.cnpq.br/1505400360366643
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https://orcid.org/0000-0003-1058-302X
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https://lattes.cnpq.br/3312801871014898
EVALUATION OF TEST SPECIMENS SUBJECTED TO SALT SPRAY TESTING USING IMAGEJ SOFTWARE FOR IMAGE PROCESSING. Corrosion assessment after salt spray tests has traditionally relied on visual inspection, which can limit the accuracy of quantitative evaluations. This study explores the application of image analysis through computational processing to measure the areas affected by corrosion on carbon steel plates, LN 38, coated with paints, subjected to salt spray testing conducted according to ASTM B117 standard. Using ImageJ software, we differentiate corrosion products from uncorroded metal surfaces based on variations in grayscale tones of the image converted to 8-bit and binarized, allowing precise measurement of corroded areas. Two 2² factorial experiments with replication were used in sample preparation, and each panel was evaluated following method 1 of ASTM D1654 standard, leading to the calculation of interaction effects with 95% confidence intervals for each condition. These computational results were then compared with evaluations made by an experienced technician through manual measurement of the panels. The findings suggest that computational image analysis can significantly improve the resolution and reliability of corrosion assessments compared to standard visual methods, indicating its potential as a valuable tool in corrosion research and evaluation.
Combinação entre espécie fitorremediadora e carvão vegetal ativado em ambientes com a presença de herbicida persistente
(Universidade Federal de São Carlos, 2025-09-19)
Arthur, Clarissa
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Lima, Felipe Tavares
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https://lattes.cnpq.br/0157704339343186
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https://orcid.org/0009-0005-9579-3502
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Baron, Daniel
The herbicide atrazine (ATZ) is widely used in agriculture for weed control; however, its toxicity and persistence in the environment have raised environmental concerns. ATZ inhibits photosynthesis in weeds, causing significant reductions in growth and enzymatic activity. Phytoremediation is a sustainable technique that uses plants to remove soil pollutants and emerges as a promising solution to address contamination from agricultural pollutants. In this context, Canavalia ensiformis (L.) DC. is a native Brazilian species that has been little studied regarding its phytoremediation potential, although it has been reported as an accumulator of organic and inorganic pollutants. Furthermore, recent studies indicate that the use of activated charcoal (biochar), produced from the pyrolysis of biomass, can enhance the remediation of contaminated soils due to its capacity for water and nutrient retention and adsorption of organic and inorganic pollutants. In this monograph, our hypothesis tested whether the use of eucalyptus-derived activated biochar, when combined with the plant species C. ensiformis, would exhibit a synergistic effect in its phytoremediation role of soils contaminated with atrazine. A generalized linear model (GLM) was used to analyze plant growth parameters, while the non-parametric Kruskal-Wallis test and Dunn's test were employed for the analysis of dry matter and enzymatic activity. The structure of this work includes a brief review with justifications for the topic, followed by the presentation of results in the format of a scientific manuscript, according to the standards of journals in the field. The results of this study provide relevant contributions to the potential application of biochar (BCH) in mitigating herbicide-induced stress in native Brazilian plants, reducing the phytotoxic effects of ATZ, and proposing strategies for the detoxification of contaminated soils, thereby supporting more sustainable agricultural practices.
Predição da estabilidade a pequenas perturbações em sistemas de energia elétrica: uma abordagem considerando as incertezas da geração eólica
(Universidade Federal de São Carlos, 2025-09-22)
Kernbichler, André Mirandez
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Fernandes, Ricardo Augusto Souza
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https://lattes.cnpq.br/0880243208789454
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https://orcid.org/0000-0003-2361-6505
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Fernandes, Tatiane Cristina da Costa
In the current context, where the demand for sustainable energy sources with low environmental impact is increasing, wind power generation plays a prominent role. However, the high penetration of this energy source imposes new challenges to the operation of Power Systems, particularly involving small-signal stability and the behavior of interarea electromechanical oscillation modes. These challenges become even more critical due to the need for real-time assessment of these modes, which can be supported by Phasor Measurement Units and analytical techniques capable of handling the variability and uncertainty inherent in renewable generation. In this context, this work aims to develop a methodology for small-signal stability prediction in systems with high wind power penetration, using machine learning techniques with a focus on decision trees. This approach enables stability prediction at the pre-fault instant, with low computational cost and fast processing, favoring real-time application. To achieve this, the IEEE 68-bus system was modified by incorporating approximately 40\% of wind power generation and considering variations in load, wind speed, and contingencies according to the $N-1$ criterion, thereby composing the study database. Modal characteristics were then extracted using the Prony method. Next, two approaches for critical mode classification were evaluated: a centralized approach, which aggregates data from multiple PMUs into a single predictive model, and a decentralized approach, based on local models. In both approaches, classifications were analyzed in both binary (stable or unstable) and three classes form (secure, insecure, or unstable), in order to investigate not only binary stability prediction but also the capability of providing more detailed information to the system operator. The centralized approach achieved the best performance, particularly in the three-class classification, reaching an accuracy above 96\% and without errors at critical classification boundaries, meaning without misclassifying unstable cases as stable and vice versa. The decentralized approach, although showing lower accuracy in the three-class classification, presented satisfying results in binary classification, with accuracy above 99\%, proving suitable for contexts with communication constraints or partial system failures. The results confirm the effectiveness of the proposed methodology for small signal stability prediction in systems with high wind power generation penetration, providing support for safe operation and informed decision-making under different operating conditions.
Análise preditiva e cenários futuros para manejo de resíduos gerados no tratamento de água na bacia hidrográfica Tietê Jacaré
(Universidade Federal de São Carlos, 2025-09-22)
Shiratori, Juliana Costa Leite
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Achon, Cali Laguna
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https://lattes.cnpq.br/0307406069325793
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https://orcid.org/0000-0001-5819-8089
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https://lattes.cnpq.br/3481463538017247
The management of waste from full-cycle water treatment (LTA and ALAF) is a complex problem for water utilities. This research aims to analyze the management of these wastes in WTPs located in the TIETÊ-JACARÉ Water Resources Management Unit (UGRHI 13), using strategic indicators (SIs) as a tool for predictive analysis and creation of future scenarios. To achieve the proposed objectives, a literature review was conducted to provide theoretical basis and select the most relevant indicators (SIs), a form for data collection during visits to the WTPs was developed and applied, and selected indicators were applied and analyzed. This was followed by the development of three scenarios (realistic, optimistic, and pessimistic) using the multicriteria analysis methodology. Strategic indicators were proposed and applied in WTPs. By applying predictive analysis techniques and future scenarios, it was possible to diagnose and forecast the WTPs and the situation of the water bodies in UGRHI 13, through the construction of three future scenarios (realistic, optimistic, and pessimistic). The application of the Predictive Analysis Score allowed us to visualize the impact of qualitative indicators on the volume of these wastes generated. The scenarios indicated significant variations in the final volume for the year 2035. The results also revealed a decline in the water quality of the water bodies and a lack of monitoring points in the watershed dedicated to public supply, highlighting a need for monitoring more closely related to the water quality of the receiving bodies. A set of six strategic indicators (SIs) was proposed for each waste (LETA and ALAF), three of which are common to both wastes, indirectly assessing their generation.
Desigualdades salariais por sexo nos cargos comissionados (CCE E FCE) do Executivo Federal
(Universidade Federal de São Carlos, 2025-09-22)
Iwassaki, Athaine Mayumi
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Rodrigues, Rodrigo Vilela
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https://lattes.cnpq.br/7066100737307566
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https://lattes.cnpq.br/6823105219132773
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Ferro, Andrea Rodrigues
This dissertation analyzes gender inequalities in the occupation and remuneration of Executive Commissioned Positions (CCE) and Executive Commissioned Functions (FCE) within the Brazilian Federal Executive branch. The main objective is to decompose wage and occupational disparities in order to understand the mechanisms that sustain them. A quantitative approach was adopted, using microdata from the Personnel Statistical Panel (PEP) for January 2025. The methodology is based on the Oaxaca-Blinder decomposition to break down the logwage gap between men and women into explained and unexplained components, controlling for variables of education, race/color, and hierarchical level. The results show evidence of a "glass ceiling," characterized by the decreased presence of women in high-leadership strata, and a "concrete ceiling," which more acutely restricts the advancement of Black and Indigenous women. It was found that inequality mechanisms operate in distinct ways: in CCE, the disparity arises mainly from the unequal distribution of men and women across leadership levels (explained component); in FCE, the unexplained component was prominent, suggesting the presence of institutional barriers that penalize women even when they possess equivalent observable characteristics. The study concludes that inequality in the public sector is structural and multifaceted, manifesting not only in access but also in the unequal valuation of professional trajectories, which challenges the notion of a purely formal meritocracy.
Processo de ensino da dança folclórica alemã na perspectiva colaborativa e universalista
(Universidade Federal de São Carlos, 2025-09-23)
Silva, Bruna Poliana
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Gonçalves, Adriana Garcia
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https://lattes.cnpq.br/3907378784787581
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https://orcid.org/0000-0002-5725-2001
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https://lattes.cnpq.br/5748663536697045
Folk dance is a cultural expression that plays an important role in shaping a people’s identity and has the potential to enrich the educational process. This study aimed to develop and analyze, from a universalist perspective, the teaching process of German folk dance in a collaborative framework, valuing diversity and universalist practices. The specific objectives were: a) to verify how dance is included as a curricular component from the perspective of the participating teachers; b) to analyze the collaborative development of the German folk dance teaching process with the teachers; c) to examine the applicability of this teaching process in the perspective of diversity and universalist practices; and d) to verify the level of collaboration among teachers in the development and implementation of the teaching process. This is an intervention study, within the perspective of collaborative research, with a qualitative approach, involving four teachers (Physical Education, Music, Special Education, and the classroom teacher) and 28 students from a 5th-grade class, including one with autism spectrum disorder. Data collection included interviews, classroom observations, analysis of teacher collaboration in planning and implementation, as well as records of the development, implementation, and evaluation stages. Three planning meetings and one evaluation meeting were conducted, culminating in the implementation of 11 interdisciplinary lessons in Geography, Arts, Music, and Physical Education. These lessons were observed by the researcher, recorded in video and field notes, and concluded with a presentation for the school community. Data, analyzed through thematic analysis, were organized into four axes: diagnostic survey, collaborative planning, implementation, and evaluation. German folk dance, integrated into the curriculum in a collaborative and interdisciplinary way, was recognized as a legitimate and enriching content, capable of promoting meaningful learning, broadening student participation, and fostering inclusion. Strengthening of belonging, engagement, and the integration of cultural, motor, and social content were observed. Three central themes emerged: Dance as curricular content, highlighting its formative potential and cultural value; Planning and implementation, marked by interdisciplinary articulation and teacher collaboration; and Evaluation, which emphasized inclusion as a natural outcome of universalist planning. Teacher collaboration was characterized by joint decision-making, flexibility, and adaptation to student needs, although greater integration across disciplines remains a challenge. External evaluators confirmed pedagogical coherence, methodological clarity, and diversity of strategies as strong points. Conclusion: the developed model proved feasible and replicable, serving as a reference for inclusive, culturally meaningful, and universalist-aligned educational practices.
Estudo sobre a ocorrência de fraturas de chapas metálicas no processo de conformação incremental com o emprego de análises numéricas por elementos finitos.
(Universidade Federal de São Carlos, 2025-09-23)
Santos, Paulo Henrique Silva
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Evangelista, Sérgio Henrique
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https://lattes.cnpq.br/1610397432103491
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https://orcid.org/0000-0003-3437-7378
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https://lattes.cnpq.br/2460647394885091
The mechanical forming of thin metal sheets is a growing technology that is well suited to meeting the industry's need for parts with complex geometries and low manufacturing costs. To manufacture such parts, a number of processes are being studied and developed, such as machining, die and punch forming, and incremental forming. In incremental forming with thin sheets, the process is characterized by the movement of a tool with a spherical or semi-spherical tip with a trajectory programmed by CNC logic in order to follow a predetermined path on the surface of a sheet with the imposition of incremental plastic deformations until the programmed profile is formed. The purpose of the incremental process is to enable the manufacture of parts with a wide variety of geometries and profiles without the use of dies and punches, which reduces costs and promotes the rapid manufacture of prototype parts. Stresses and deformations are adjusted based on machine parameters such as feed speed, tool rotation, lubrication, and cooling, for example. This study investigated the influence of the tool rotation speed parameter on the incremental stamping (EI) process based on the forming limit curve (FLC) diagrams using the criteria of deformation trajectory and final deformation state, in addition to analyzing thicknesses, stamping depth, and triaxiality of stresses. For the analyses, numerical experiments were performed in the ABAQUS® program using the finite element method with the properties of the physical experiment available in the article by Magalhães, D., et al., (2025), in addition to being implemented with and without the ductile damage model. The material implemented was an aluminum sheet with a geometry of 55 x 55 x 1 mm of the AA1050/AA7050 aluminum multilayer hybrid material produced by accumulated rolling. The results showed that tool rotation had little influence on the criteria evaluated, as did friction and density in the cases tested, but differences were found in the results with and without the ductile damage model. In addition, the results showed that the triaxiality of stresses is not constant over time and that there is a triaxiality gradient when analyzing at a single point in time.
Relations between Industry 4.0 and Lean Six Sigma: Analysis of Big Data Analytics and Organizational Factors
(Universidade Federal de São Carlos, 2025-09-24)
Gaeta, Rafaela Pereira
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Lizarelli, Fabiane Letícia
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https://lattes.cnpq.br/4525431419326559
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https://lattes.cnpq.br/2129407158459687
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Toledo, José carlos de
Industry 4.0 has profoundly transformed the production environment, imposing new challenges on organizations, such as the management of large volumes of data, the need for mass customization, and the pursuit of greater operational efficiency. In this context, the integration between Big Data Analytics (BDA) and Lean Six Sigma (LSS) emerges as a strategic pathway to enhance continuous improvement, promote evidence-based decision-making, and sustain organizational performance. The main objective of this article is to investigate the impact of BDA capabilities, subdivided into technological and managerial, on LSS efforts, while also examining whether LSS acts as a mediator between BDA and organizational outcomes (financial, operational, and quality). The moderating roles of data-driven culture (DDC) and top management support (TMS) in the relationship between BDA and LSS are also analyzed. The research was conducted in two stages. First, a Systematic Literature Review (SLR) was developed, which revealed that although scientific production on the topic is increasing, it remains recent and predominantly conceptual. The SLR highlighted BDA as the technology with the greatest impact on LSS by providing real-time data and advanced analytics for tools such as SPC, VSM, Poka-Yoke, and VoC. It also identified that organizational factors such as leadership, culture, and training are critical to the successful integration of LSS and Industry 4.0. In the second stage, a survey was conducted with 184 professionals from the Brazilian manufacturing industry, analyzed using Partial Least Squares Structural Equation Modeling (PLS-SEM). The empirical results demonstrate that managerial BDA capabilities exert a positive and significant effect on LSS efforts, whereas technological capabilities alone do not produce a relevant impact. It was further found that LSS acts as an indispensable mediator for BDA to contribute to operational and quality performance, with no direct impact on financial performance. Conversely, neither DDC nor TMS showed significant moderation. These findings extend the literature by providing novel quantitative evidence in a developing country, demonstrating that the value of BDA does not lie in technological infrastructure itself, but in its capacity to be translated into continuous improvement practices mediated by LSS. From a managerial perspective, the results reinforce the importance of investing in managerial analytics capabilities, strategically aligned with LSS, in order to transform data into sustainable performance gains.
Ensino de libras como língua adicional: estratégias e recursos didáticos
(Universidade Federal de São Carlos, 2025-09-25)
Ribeiro, Maria Clara Gandini
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Silva, João Paulo da
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https://lattes.cnpq.br/6111069189059770
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https://orcid.org/0000-0003-0474-435X
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https://lattes.cnpq.br/3184692124687827
The objective of this study is to analyze the teaching resources and strategies employed in a Brazilian Sign Language (Libras) as a second language course for hearing students at a university in the state of São Paulo, Brazil. More specifically, the study examines how these resources contributed to the acquisition of basic Libras by hearing students with no prior knowledge of the language, as determined by the instructor during the first class. This study draws on previous research on the teaching and learning of Libras in formal educational settings, highlighting the role of different resources in the acquisition of a visual-spatial language, with particular emphasis on SignWriting as one of the resources that support language acquisition (LEITE; MCCLEARY, 2009; BLANC, 2022). The methodology adopted was based on Leite and McCleary (2009), who conducted a diary-based study observing classes in Libras as a second language taught by deaf instructors at the basic, intermediate, and advanced levels. The present study focuses exclusively on the basic level. The analysis of the teaching materials indicated that the use of multiple teaching resources plays an important role in promoting more effective language acquisition.
Modelagem de tempo de falha acelerado para sistemas reparáveis considerando fragilidade e diferentes funções de aceleração
(Universidade Federal de São Carlos, 2025-09-25)
Pereira, Edilenia Queiroz
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Gonzatto Junior, Oilson Alberto
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https://lattes.cnpq.br/7365405141909374
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https://orcid.org/0000-0002-5447-3044
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https://lattes.cnpq.br/5581116134666021
Reliability analysis in accelerated life testing aims to understand and anticipate the behavior of systems subjected to intensified stress conditions, enabling the estimation of their durability under normal usage conditions. In this context, acceleration functions play a central role, as they describe how stress affects the time to failure. The main objective of this thesis is to investigate, study, and propose acceleration functions that enhance the models’ ability to capture complex relationships between stress and response. To this end, we adopt the context of multiple repairable systems under the assumption of minimal repair, where failures follow a Non-Homogeneous Poisson Process (NHPP) with a baseline intensity function governed by a Power Law Process. The modeling also incorporates unobserved heterogeneity through a frailty term, capturing random effects that influence system performance over time. Model development was carried out in several stages. Initially, an exponential accelerated failure time model with weighted Lindley frailty was proposed and compared to a model with gamma frailty. Next, the scope of acceleration functions was expanded to include the classical forms: Arrhenius, Eyring, and Inverse Power, in comparison with the Exponential form. This methodological extension resulted in eight models: four without frailty and four incorporating gamma frailty. Subsequently, two new acceleration functions were proposed, Exponentiated Exponential and Exponentiated Eyring, aiming to provide greater flexibility in modeling and broaden the potential for application in different accelerated stress scenarios, overcoming limitations of classical forms. Finally, two additional models were developed by combining these new functions with the inclusion of gamma frailty. Parameter estimation for all proposed models was conducted under a frequentist approach, through the construction of the likelihood function and the derivation of maximum likelihood estimators, along with their asymptotic confidence intervals obtained via numerical methods. In all cases, the performance of the estimators was evaluated through a simulation study that covered various scenarios and acceleration levels, and all models yielded satisfactory results. The applicability of these models was illustrated with practical examples involving multiple systems and varying stress levels, highlighting the relevance of these acceleration functions for reliability analysis in accelerated life testing.
“Me ajuda a olhar!”: a qualidade da escola pelas crianças
(Universidade Federal de São Carlos, 2025-09-26)
Vasconcelos, Beatriz Nogueira Marques de
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Nardi, Letícia
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Santos, Luiza de Oliveira
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Almeida, Luana Costa
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https://lattes.cnpq.br/4388129281398361
Este artigo explora quais os sentidos que as crianças constroem sobre a qualidade da escola. O objetivo principal é investigar a visão das crianças sobre a qualidade da escola e os sentidos que elas associam ao ambiente escolar. Reflete-se sobre a qualidade social da educação a partir dos trabalhos de Silva, Bertagna et al. Sordi, Bertagna y Oliveira, enquanto para a metodologia e análise das ações com as crianças fundamenta-se em especial na perspectiva histórico-cultural. Utilizam-se também dispositivos de criação da pedagogia do cinema com base em Migliorin e Pipano e Bergala. Os resultados mostram que a qualidade da escola, na perspectiva das crianças, está associada a experiências pedagógicas diversificadas, boas relações humanas e ambientes que promovem o brincar, a ludicidade e o convívio social. Notou-se também uma distinção entre as experiências positivas e as negativas, com alguns alunos expressando descontentamento com a escola. O estudo conclui que a percepção da qualidade escolar para as crianças é multifacetada e está ligada tanto às atividades planejadas quanto aos acontecimentos cotidianos. As contribuições das crianças revelam uma compreensão complexa da vida escolar, destacando a importância do movimento de escuta e avaliação da qualidade da escola que a elas é destinada.