Repositório UFSCar

O Repositório Institucional da UFSCar (RI UFSCar) é um sistema de informação que visa armazenar, preservar, organizar e disseminar amplamente a produção intelectual dos diversos setores e segmentos da comunidade da UFSCar, provendo o acesso aberto à informação produzida na instituição e registrada como científica, tecnológica, didática, artístico-cultural e técnico-administrativa.

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Cyberbullying contra professores: a autoridade escolar como alvo de violência virtual
(Universidade Federal de São Carlos, 2020-02-13) Reis, Renan Aparecido da Silva; Zuin, Antônio Álvaro Soares; http://lattes.cnpq.br/5543562307373287; https://orcid.org/0000-0002-6850-2897; http://lattes.cnpq.br/4763163158241586; Zuin, Antônio Álvaro Soares; D'Affonseca, Sabrina Mazo; Oliveira, Paula Ramos de; http://lattes.cnpq.br/5543562307373287; http://lattes.cnpq.br/0381029115416584; http://lattes.cnpq.br/1788063551247254; https://orcid.org/0000-0002-6850-2897; https://orcid.org/0000-0001-9103-0616
The contemporary context demonstrates that children and adolescents have increasingly used the virtual environment and the Internet as privileged spaces for communication, self-expression, and the establishment of social bonds. While bullying has traditionally been confined to the physical environment in which it occurs, its manifestations are no longer restricted to the spatial boundaries of schools or other face-to-face settings. In the digital context, such practices acquire new dynamics and significantly expand their reach, becoming what is known as cyberbullying. This phenomenon is characterized by intentional, repetitive, aggressive, and hostile actions or behaviors carried out by individuals or groups through electronic devices connected to the Internet, with the deliberate aim of causing harm, humiliation, or suffering to the victim. An important aspect of this issue concerns the expansion of the targets of virtual violence. Whereas such attacks were initially directed primarily at other students, they currently affect other members of the school community, especially teachers, who represent figures of pedagogical, disciplinary, and institutional authority. Considering the complexity of this scenario and the transformations in school relationships mediated by digital technologies, this study sought to identify the factors underlying the various forms of violence directed at teachers, as well as to analyze, from the perspective of Critical Theory, the contemporary role of humiliation and the public degradation of teachers’ image. To achieve these objectives, the study was organized into two parts. The first presents a theoretical and conceptual discussion of cyberbullying against teachers. The second consists of an analysis of videos portraying situations related to the research problem.
Análise sazonal do limiar de dispersão da espécie Melipona quadrifasciata (Apidae: Meliponini) em um ambiente antropizado
(Universidade Federal de São Carlos, 2025-02-18) Santos, Luccas de Almeida; Toppa, Rogério Hartung; http://lattes.cnpq.br/0673898572494729; https://orcid.org/0000-0002-1637-2840; http://lattes.cnpq.br/5299845462319881; https://orcid.org/0000-0002-7048-6582
Animals move freely through the environment in search for resources. The stability of ecosystems determines the relationships between species and their biodiversity. However, anthropogenic interference in the environment increasingly threatens ecological relationships and the survival of species. Bees play a crucial role in maintaining ecosystems, but their influence is limited by the flight capacity of each species. Various biotic and abiotic factors influence this capacity. In the case of bees from the genus Melipona, the flight distance is approximately 2000 meters. Using the mark-release-recapture technique, this study aimed to evaluate the flight distance and return capacity of individuals from the stingless bee species Melipona quadrifasciata in an anthropized environment. Colonies were placed in semi-field conditions within an anthropized landscape for analysis over time. The released bees were monitored using a Radio-Frequency Identification (RFID) system, which allowed for individual tracking and recording of return times. Return capacity was assessed based on the number of bees that returned during both rainy and dry seasons, as well as across a gradient of distances. The intertegular span was used to determine the size of the bees, and land-use classes were employed to identify factors influencing return capacity. Returns were observed at distances of up to 7500 meters. The distance gradient and bee size influenced both the capacity and time taken to return to the colony. The results indicated that bee size and land-use classes are factors influencing both the capacity and time of return for this species. Although no strong evidence was found regarding the influence of climatic seasonality, a reduction in the number of returns was observed during the rainy season.
A evasão sob a lente da administração pública: análise de fatores e diretrizes institucionais de permanência na pós-graduação stricto sensu da UFSCar
(Universidade Federal de São Carlos, 2026-08-19) Rossit, Felipe Augusto Andrade; Molina, Wagner de Souza Leite; http://lattes.cnpq.br/5939243693407420; http://lattes.cnpq.br/5415967943630073; https://orcid.org/0009-0009-5568-8643; Justo, Carolina Raquel Duarte de Mello; Severo, Mirlene Fátima Simões Wexell; http://lattes.cnpq.br/9209489935777843; http://lattes.cnpq.br/5696296892389040
This dissertation investigates student dropout in stricto sensu graduate programs at the Federal University of São Carlos (UFSCar) between 2019 and 2024, understood as a systemic failure of university Public Administration. Aiming to analyse the factors associated with abandonment and to propose managerial interventions, a convergent mixed-methods design was adopted, combining statistical analysis of 29,806 student enrolment records from CAPES open microdata, documentary analysis of federal and institutional regulations, and Content Analysis of responses from 38 dropouts. The institutional dropout rate rose from 2.9% (2020) to 5.5% (2024), totalling 1,349 withdrawals, with uneven incidence across degree types — 7.40% in Professional Master's, 5.84% in Academic Master's and 2.68% in Doctoral programmes (odds ratio of 2.91 between Professional Master's and Doctoral) —, remaining below national averages, subject to methodological differences between datasets. Among respondents, the "assistance void" and the rigidity of institutional deadlines emerged as the most recurrent factors; supervisory conflicts and mental health conditions preceded withdrawals formalised under administrative labels. It is concluded that dropout entails substantial waste of public capital. In response, the Institutional Guidelines for Permanence (Technological Product) were formulated, highlighting the Integrated System for Monitoring and Welcoming in Graduate Studies (SIMAP).
Desafios na arquitetura de microfrontends: um estudo de caso com module dederation e uma proposta de validação automatizada de dependências compartilhadas
(Universidade Federal de São Carlos, 2026-07-16) Escher, Guilherme Salvador; Lucrédio, Daniel; http://lattes.cnpq.br/9090396559596221
The microfrontend architecture proposes to bring to the user interface layer the same decomposition logic that microservices brought to the server: splitting a web application into small modules, maintained by separate teams and integrated at runtime. The idea is appealing because it lets each team evolve its part without depending on the schedule of the others. In practice, however, this autonomy hides a class of problems that recent literature has been characterizing, in particular module integration, shared dependency management, inter-module communication and visual consistency. This work investigates these problems empirically. The starting point was a real production incident: TaqShell, maintained by Taqtile, started showing a blank screen after user login, a single symptom caused by four concurrent technical problems, each one matching a challenge already cataloged in the literature on microfrontends. Investigating that incident motivated the construction of a controlled sample system (mfe-example), in which each phenomenon was reproduced in isolation through four experiments focused on CSS conflict, Shadow DOM isolation, shared-dependency incompatibility and MINOR version compatibility breaks. As a central contribution, a script for automated validation of shared dependencies between host and remote microfrontends is proposed, integrated into a GitHub Actions workflow with cross-repository checkout. The solution closes a gap left by Module Federation itself, which is by design a sharing tool, not a validation tool. Applied to TaqShell, the script revealed six version divergences that the existing pipeline had not flagged, and in an open pull request it detected, in real time, the exact failure mode characterized as Problem 3 in this work, blocking the merge until the fix was applied. The results show that theoretically predicted errors, such as major version mismatch, dependencies missing from the shared scope and duplication of libraries with global state, pass silently through the build and only manifest in the end user’s browser, often with error messages that do not point to the root cause.
A multi-agent layered architecture for recovering use cases flows in existing systems
(Universidade Federal de São Carlos, 2026-08-14) Carvalho, João Vítor de Oliveira; Camargo, Valter Vieira de; http://lattes.cnpq.br/6809743774407662; https://orcid.org/0000-0002-6439-4649; http://lattes.cnpq.br/5420793134490667; https://orcid.org/0009-0006-1776-2767; Wiese, Igor Scaliante; Valejo, Alan Demétrius Baria; http://lattes.cnpq.br/0447444423694007; http://lattes.cnpq.br/9546164790189830; https://orcid.org/0000-0001-9943-5570; https://orcid.org/0000-0002-9046-9499
Legacy systems frequently require reverse engineering activities. Among the various possible activities, understanding how specific use cases are internally executed by a software system stands out as an important task, requiring the identification of the software elements involved in their execution, such as classes, method calls, modules, and components. Although several studies have explored the use of artificial intelligence in activities related to software development and maintenance, no studies focusing specifically on the automated comprehension and extraction of use case execution flows in software systems were identified. In this context, multi-agent systems have emerged as a promising approach for solving complex problems composed of multiple stages and specialized skills, allowing agents to operate autonomously and collaboratively. This dissertation presents a tool-supported multi-agent approach for use case comprehension. The proposed approach/tool involves seven collaborative agents that work together to extract the software elements involved in the realization of a given use case. As a result, the tool automatically generates documentation composed of diagrams and textual descriptions that support software engineers in understanding the execution flow of the analyzed use case. Additionally, this dissertation contributes to the definition of the architecture of the developed tool, which is based on the integration of intelligent agents, MCP servers, and the A2A protocol, forming an infrastructure that can serve as a foundation for the development of new multi-agent systems. To evaluate the proposed approach, different instances of the tool, using different LLMs, were applied to the extraction of two use cases from a software system. The generated documentations was subsequently compared and analyzed by the author with prior knowledge of the analyzed software, producing satisfactory results regarding the comprehension of the extracted use cases.