Monografias de Graduação
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Bachelor Thesis Análise de viabilidade conômica para apoio à decisão de investimento na transformação de uma residência em uma drogaria(Universidade Federal do Rio Grande do Norte, 2026-06-18) Martins, Taynah Ingryde da Silva ; Rocha, Miriam Karla; https://orcid.org/0000-0003-4948-4782; http://lattes.cnpq.br/1389310423761626; Aramayo, Jesús Leodaly Salazar; http://lattes.cnpq.br/5256663726919593; Noronha, Andre Gustavo Gadelha Mavignier de; http://lattes.cnpq.br/8800524734580457The Brazilian pharmaceutical retail sector has shown continuous growth in recent years, driven by increasing demand for medicines and healthcare services, making it an attractive field for investment. In this context, the present study aimed to develop a business project for transforming a residential property into a drugstore located in the Lagoa Azul neighborhood, in the North Zone of Natal, Rio Grande do Norte, Brazil, addressing market, regulatory, structural, and financial aspects. The methodology was characterized as applied, quantitative, and descriptive research, developed through bibliographic, documentary, and market surveys. The study included an analysis of thepharmaceutical sector, the development of the basic engineering project and store layout, the estimation of implementation costs based on the National System of Construction Costs and Indexes Research (SINAPI), revenue projections, operating costs, initial inventory and working capital estimates, as well as cash flow projections and economic feasibility indicators. The total initial investment required for the project was estimated at R$ 187,051.48, including physical adaptations, legal regularization, initial inventory, and working capital. To assess economic feasibility, three revenue scenarios were considered: optimistic, realistic, and pessimistic. The indicators used were Net Present Value (NPV), Internal Rate of Return (IRR), and Discounted Payback Period, adopting a Minimum Attractive Rate of Return (MARR) of 15% per year. The results showed that the optimistic and realistic scenarios presented positive NPV, IRR above the adopted MARR, and recovery of the invested capital within the five-year analysis horizon, indicating the economic feasibility of the project. On the other hand, the pessimistic scenario presented unfavorable results, highlighting the project's sensitivity to revenue variations. It is concluded that the implementation of the drugstore presents potential financial returns and favorable conditions for its realization, provided that appropriate management and operational control practices are adoptedBachelor Thesis Estudo da viabilidade técnica, econômica e ambiental da utilização da energia eólica para alimentação de eletropostos de veículos elétricos(Universidade Federal do Rio Grande do Norte, 2026-06-12) Silva, Gabriel Henrique da; Rezende, Júlio Francisco Dantas de; http://lattes.cnpq.br/7433758989886841; Cabral, Marco Antônio Leandro; https://orcid.org/0000-0002-7364-9877; http://lattes.cnpq.br/5534453101318814; Tacconi, Marli de Fátima Ferraz da Silva; https://orcid.org/0000-0001-8877-9984; http://lattes.cnpq.br/9540733920831213The growing concern over greenhouse gas emissions and the expansion of electric mobility have intensified the search for sustainable energy solutions for the transportation sector. In Brazil, despite advances in reducing emissions in certain segments of the economy, the transportation sector remains one of the main contributors to carbon dioxide (CO₂) emissions and energy consumption. In this context, the use of renewable energy sources to supply electric vehicles emerges as a promising alternative for reducing the environmental impacts associated with fossil fuels. This study aims to analyze the technical and economic feasibility of using wind energy as a power source for electric vehicle charging stations through the proposal of a hybrid system integrated with the conventional power grid, applied to the BR-101 highway corridor between the states of Rio Grande do Norte and Paraíba. The adopted methodology included a literature review, energy system sizing, estimation of implementation and operational costs, and economic evaluation using Net Present Value (NPV), Internal Rate of Return (IRR), and Payback indicators. A sensitivity analysis was also carried out considering different demand growth scenarios associated with the expansion of the electric vehicle fleet in Brazil. The results indicate that wind energy has the potential to meet a significant portion of the charging station's energy demand, contributing to a reduction in dependence on conventional energy sources and to the mitigation of greenhouse gas emissions. Furthermore, the economic analysis demonstrated the feasibility of the project under different demand growth scenarios, reinforcing the potential of the proposed solution as a sustainable alternative for the development of electric vehicle charging infrastructure in Northeastern Brazil.Bachelor Thesis Otimização de layout em uma indústria baseada em modelo de simulação(Universidade Federal do Rio Grande do Norte, 2026-05-26) Freire, Davi Fortaleza; Cavalheiro, Cláudia Aparecida Francisco; http://lattes.cnpq.br/6657263743083103; Barbosa, Joelton Fonseca; http://lattes.cnpq.br/7910377572634313; Soares, Werner Kleyson da Silva; http://lattes.cnpq.br/4030755944657467This Final Course Project applies Production Engineering techniques to optimize the production layout of an industry whose non-linear physical arrangement and non-sequential material flow generated high transportation and handling waste (muda). The objective was to model and optimize this layout through Discrete Event Simulation in the FlexSim software, creating a virtual environment to quantify efficiency gains before physical implementation and thus minimize risks and unnecessary investments. A quantitative Case Study was adopted, comprising Business Process Mapping (BPMN), statistical data collection and analysis, with validation of the Triangular Distribution for machine service times, and modeling of the current and optimized scenarios. The proposed layout increased average daily output from 148 to 187 parts, a gain of approximately 26%, reduced the accumulated queue after the drilling station from 104 to 18 parts, a reduction of about 83%, and decreased the average distance traveled by materials from 55.59 m to 28.02 m, a 50% reduction, confirming the feasibility of the proposed restructuring.Bachelor Thesis Análise de viabilidade econômica para apoio à decisão de investimento na transformação de uma residência em uma drogaria(Universidade Federal do Rio Grande do Norte, 2026-06-18) Martins, Taynah Ingryde da Silva; Rocha, Mirian Karla; https://orcid.org/0000-0003-4948-4782; http://lattes.cnpq.br/1389310423761626; Aramayo, Jesús Leodaly Salazar; http://lattes.cnpq.br/5256663726919593; Noronha, André Gustavo Gadelha Mavignier de; http://lattes.cnpq.br/8800524734580457The Brazilian pharmaceutical retail sector has shown continuous growth in recent years, driven by increasing demand for medicines and healthcare services, making it an attractive field for investment. In this context, the present study aimed to develop a business project for transforming a residential property into a drugstore located in the Lagoa Azul neighborhood, in the North Zone of Natal, Rio Grande do Norte, Brazil, addressing market, regulatory, structural, and financial aspects. The methodology was characterized as applied, quantitative, and descriptive research, developed through bibliographic, documentary, and market surveys. The study included an analysis of the pharmaceutical sector, the development of the basic engineering project and store layout, the estimation of implementation costs based on the National System of Construction Costs and Indexes Research (SINAPI), revenue projections, operating costs, initial inventory and working capital estimates, as well as cash flow projections and economic feasibility indicators. The total initial investment required for the project was estimated at R$ 187,051.48, including physical adaptations, legal regularization, initial inventory, and working capital. To assess economic feasibility, three revenue scenarios were considered: optimistic, realistic, and pessimistic. The indicators used were Net Present Value (NPV), Internal Rate of Return (IRR), and Discounted Payback Period, adopting a Minimum Attractive Rate of Return (MARR) of 15% per year. The results showed that the optimistic and realistic scenarios presented positive NPV, IRR above the adopted MARR, and recovery of the invested capital within the five-year analysis horizon, indicating the economic feasibility of the project. On the other hand, the pessimistic scenario presented unfavorable results, highlighting the project's sensitivity to revenue variations. It is concluded that the implementation of the drugstore presents potential financial returns and favorable conditions for its realization, provided that appropriate management and operational control practices are adoptedBachelor Thesis Desenvolvimento de um aplicativo mobile para gestão integrada de laboratórios de mecânica dos solos(Universidade Federal do Rio Grande do Norte, 2026-06-29) Soares, Micael Bruno Cassiano; França, Fagner Alexandre Nunes de; https://orcid.org/0000-0002-8113-622X; http://lattes.cnpq.br/6854485206744906; http://lattes.cnpq.br/9430411061721504; Almeida, Marcos Lacerda; https://orcid.org/0000-0002-8113-622X; http://lattes.cnpq.br/5371916967131650; Lima Neto, Francisco Felinto de; http://lattes.cnpq.br/4777764277624255The management of soil mechanics laboratories in higher education institutions involves significant operational challenges, such as inventory control, test recording, activity scheduling, and sample traceability, directly impacting the reliability of results and compliance with normative requirements. This paper aims to present the development of LabMecSolos, a mobile application designed for the integrated management of such laboratories, adopting the requirements of ABNT NBR ISO/IEC 17025:2017 as a reference. The solution was implemented using Ionic Capacitor, React, and TypeScript technologies, structured into seven functional modules: Authentication and Profile, User Administration, Inventory Management, Testing Cycle, Scheduling and Reservations, Management Dashboard, and Unified Soil Study. The offline-first architecture, supported by a local SQLite database, ensures continuous system operation regardless of connectivity availability, with cloud synchronization planned for future work. The Unified Soil Study stands out by consolidating georeferenced data from different investigations into an interactive geotechnical map, enhancing integrated spatial analysis. As a result, the system encompasses 109 functionalities, 232 business rules, and 35 database tables, constituting a platform that seeks to bridge technological gaps in the administration of university geotechnical laboratories, providing an extensible foundation for future research in laboratory automation and standards compliance.Bachelor Thesis Projeto, simulação e implementação experimental de um conversor SEPIC para aplicações fotovoltaicas(Universidade Federal do Rio Grande do Norte, 2026-06-24) Vieira, Stephany Rodrigues; Araújo, Fábio Meneghetti Ugulino de; http://lattes.cnpq.br/5473196176458886; https://lattes.cnpq.br/2883512529985656; Brito Júnior, Agostinho de Medeiros Brito; http://buscatextual.cnpq.br/buscatextual/visualizacv.jsp?id=K4798882E6; Agostinho, Casimiro Waete; http://lattes.cnpq.br/4800411001675799The increasing use of renewable energy sources has driven the development of power electronic conversion systems capable of accurately adapting and controlling the energy generated by solar modules. In this context, this work aims to design, simulate, and implement a DC-DC SEPIC (Single-Ended Primary Inductor Converter) converter in order to validate its practical performance against the ideal theoretical model in photovoltaic applications. To achieve this objective, the analytical design of the converter components was initially carried out, followed by simulations in the MATLAB/Simulink environment to verify the system operation in both step-down (buck) and step-up (boost) modes. After the computational validation stage, the study proceeded to the implementation of a physical prototype, allowing for a comparison between the real dynamic behavior and the theoretical predictions. The experimental results demonstrated that, although the static gain followed the projected trends, factors such as resistive losses, voltage drops in semiconductor devices, and power supply limitations caused reductions in the output values. Furthermore, an efficiency higher than 90% was observed under intermediate operating conditions, while higher duty cycles resulted in performance degradation. Ultimately, the study demonstrates that hardware validation is crucial for a comprehensive understanding of the limitations and losses inherent to power conversion systems.Bachelor Thesis Elaboração de um Plano de Gerenciamento de Resíduos Sólidos (PGRS) para um hotel: estudo de caso no Rio Grande do Norte(Universidade Federal do Rio Grande do Norte, 2026-06-30) Silva, Juliana Maria Gomes da; Andrade, Fernanda Monicelli Câmara Brito; http://lattes.cnpq.br/8616031843113917; Cunha, Giulliana Karine Gabriel; http://lattes.cnpq.br/5895687486774790; Costa, Amanda Rodrigues Santos; http://lattes.cnpq.br/2190490658228479Activities in the hotel sector generate different types of solid waste, requiring appropriate procedures for segregation, packaging, storage, and environmentally sound final disposal, especially in establishments that integrate lodging, food services, laundry, and support activities. In this context, inadequate solid waste management can cause environmental and sanitary impacts, compromising urban environmental quality and the operational conditions of businesses. Furthermore, even with advances in selective waste collection in Brazil, a large portion of solid waste still does not receive environmentally sound disposal. Therefore, this study aimed to develop a Solid Waste Management Plan (SWMP) for the Hotel Porto Bello II, located in the municipality of Caicó/RN. The methodology adopted is based on bibliographic and documentary research and a technical-operational survey, including an analysis of current environmental legislation, technical standards of the Brazilian Association of Technical Standards (ABNT), and an evaluation of the activities carried out in the lodging, restaurant, kitchen, laundry, reception, and administrative areas of the hotel. The identification, characterization, and classification of solid waste generated at the hotel were also carried out, according to the criteria established by ABNT NBR 10004:2024. Based on the information obtained, procedures related to the segregation, packaging, temporary storage, collection, and environmentally sound final disposal of solid waste generated during the operation of the enterprise were defined. The results obtained allowed the identification of the predominance of organic waste from food preparation and consumption activities, in addition to the generation of recyclable materials such as paper, plastic, glass, and metal. Based on the diagnosis carried out, a Solid Waste Management Plan compatible with the operational reality of the enterprise was developed, including measures for segregation, packaging, temporary storage, collection, and final disposal of waste, contributing to the improvement of internal management and to compliance with the environmental and sanitary requirements applicable to the environmental licensing process. Keywords: environmental management; accommodation facilities; waste management; sustainability; environmental diagnosis; environmental licensing.Bachelor Thesis Automatizar para organizar: uma abordagem teórica com microcontrolador aplicado a sistemas de armazenamento(Universidade Federal do Rio Grande do Norte, 2026-06-18) Silva, Samuel Victor Maciel da; Araújo, Márcio Valério de; Pedrosa, Diogo Pinheiro Fernandes; http://lattes.cnpq.br/3276436982330644; https://orcid.org/0000-0001-7166-5526; http://lattes.cnpq.br/0827462439273599; https://orcid.org/0009-0007-4182-8946; http://lattes.cnpq.br/8391796616528711; Souto, Ulisses Borges; https://orcid.org/0000-0001-7166-5526; http://lattes.cnpq.br/5255022158676985; Lins, Filipe Campos de Alcântara; http://lattes.cnpq.br/8390442821903867; https://orcid.org/0000-0001-8360-4632This study proposes the development of a theoretical model for an automated storage system. The proposal was motivated by observations made in an industrial environment in which dental implants manufactured using CNC machines are manually stored in 96-position storage trays. This manual process significantly reduces efficiency, traceability, and process standardization. As an alternative, a simulated solution was developed based on a mobile platform capable of identifying, organizing, and routing each implant to one of six storage compartments according to predefined color ranges. The system architecture includes sensors, DC motors, a servomotor, a buzzer, a potentiometer, and a push-button switch. The source code was developed in C++ by implementing control logic and timing techniques. The results demonstrate that the proposed theoretical model satisfies the specified functional requirements, providing a promising foundation for future applications aimed at automating logistics processes in small-scale industrial environments. Overall, the study indicates that automation, even when implemented through low-cost and small-scale solutions, can significantly improve operational efficiency in such environments.Bachelor Thesis Desenvolvimento de um dispositivo vestível para monitoramento cinemático sem fio em modelos animais(Universidade Federal do Rio Grande do Norte, 2026-06-26) Carvalho, Gabriele Rocha de; Nunes Netto, Severino Peixoto; Radiske, Andressa; http://lattes.cnpq.br/0783119632703107; http://lattes.cnpq.br/5444255427158710; https://lattes.cnpq.br/1652109653608329; Bertucci, Luiz Henrique; http://lattes.cnpq.br/6308370241219761The quantitative analysis of animal behavior plays an important role in neuroscience, allowing the investigation of relationships between neural activity and motor patterns. However, video-based methods present limitations in capturing fast oscillations, which restricts experimental precision. To overcome these barriers, this work aims to develop a lightweight, wireless wearable inertial device designed for continuous three-dimensional kinematic monitoring in small animal models. The experimental procedures involved hardware design using the ESP32-C3 microcontroller integrated with the MPU6050 IMU, firmware development for real-time transmission via a local Wi-Fi Access Point (AP) at 30 Hz, and the creation of a web interface for telemetry and structured data export. The validation protocol encompassed technical bench tests and an in vivo pilot test with a common marmoset (Callithrix jacchus), using a distributed ergonomic garment (cranial cap and dorsal vest) to minimize biomechanical impact. The results demonstrated successful electronic integration, operating without packet loss and with precise data export in CSV format. In the in vivo trial, the device proved its practical viability by organically recording the animal's ballistic dynamics, detecting approximately 43 head saccades and enabling Main Sequence analysis. Although the test highlighted the need for mechanical improvements to mitigate the inertial displacement of the fabric cap, the electronic system remained robust. It is concluded that the equipment serves as a functional proof of concept, offering a non-invasive, high temporal resolution, and low-cost alternative for the standardization of freely moving behavioral analyses in neuroengineering.Bachelor Thesis Atenção visual em crianças com Transtorno do Espectro Autista: efeitos da estimulação elétrica transcraniana por c-tDCS e tRNS(Universidade Federal do Rio Grande do Norte, 2026-06-17) Seyffarth, Manuela Cerqueira; Severino Peixoto Nunes Netto; Fabrício Lima Brasil; http://lattes.cnpq.br/5066712308449764; http://lattes.cnpq.br/5444255427158710; http://lattes.cnpq.br/6095489339433275; Severino Peixoto Nunes Netto; http://lattes.cnpq.br/5444255427158710; Fabrício Lima Brasil; http://lattes.cnpq.br/5066712308449764; Izabel Hazin; http://lattes.cnpq.br/5496201609189471ABSTRACT Autism Spectrum Disorder (ASD) is characterized by deficits in communication and social interaction, as well as restrictive and repetitive behaviors. These aspects may be associated with alterations in the medial prefrontal cortex and anterior cingulate gyrus, regions related to executive functions and visual attention. In this context, transcranial electrical stimulation (TES) has emerged as a promising alternative to enhance multidisciplinary interventions already used in ASD. The present study aimed to analyze, through eye tracking, visual attention patterns and the effects of cathodal transcranial direct current stimulation (c-tDCS) and transcranial random noise stimulation (tRNS) in children with ASD. Fourteen children participated in the study and were divided into three groups: c-tDCS, tRNS, and placebo. Participants received 20 minutes of stimulation over three weeks and were assessed using three experimental paradigms: attention to social scenes (1), preference between spinning objects and social scenes (2), and attention to emotions (3). Statistical analyses demonstrated significant differences in attention time between groups in paradigms 2 (p = .044) and 3 (p < .001). In addition, specific visual preference patterns were observed across the three evaluated paradigms. These findings suggest that TES may influence aspects of visual attention in children with ASD, especially in tasks related to social and emotional processing. The study is still ongoing, and further analyses may expand the understanding of TES effects on attentional deficits associated with the disorder.