Portal de Periódicos da Univali (Universidade do Vale do Itajaí)
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Classificação de Aves Predadoras: Fine-tuning Progressivo em Redes Neurais Convolucionais
No full textAbstractThis paper presents a process for classifying predatory birds byfamily and species. The motivation for this study arises from thehigh variability observed among birds of different species and theimportance of performing classification efficiently and in a timelymanner. Additionally, this work aims to analyze the impact of usingRGB channels in comparison to grayscale images on classificationperformance, as well as the effect of applying data augmentationtechniques during training. The dataset contains 42,475 images,distributed across 6 families and 41 species. The process employsfine-tuning, using the ResNet-50 model. Early stopping was appliedto control overfitting and obtain the best model. The test resultshighlight the effectiveness of the proposed process in classificationtasks, with performance varying across different input configurations.For species classification, the model trained with grayscalechannels achieved an F1-Score of 0.80. Using RGB channels improvedthe performance significantly, resulting in an F1-Score of0,86. Further applying data augmentation techniques to the RGBslightly improved the metrics, achieving an F1-Score of 0.87. Theseresults demonstrate the benefits of incorporating color informationand data augmentation in enhancing classification accuracy
Uma análise de múltiplos critérios do Problema de Roteamento de Veículos usando o AEMMT.
Get PDFAbstractThe following work presents a resolution of the Vehicle RoutingProblem, focusing on fuel distribution, using Evolutionary Algorithms,which is a bio-inspired Artificial Intelligence technique. Thestudy examines the behavior of a monoobjective version comparedto the ‘MultiObjective Evolutionary Algorithm with Many Tables’(AEMMT, in portuguese), which operates simultaneously with differentsubpopulations, where each one is dedicated to minimizing aspecific objective function. Therefore, the objective is to determinewhich of the two produces the best results when considering severalfactors such as distance, time and fuel. As a result, in this work theversion algorithm with many objectives proved to be superior to thesingle-objective version in relation to the value of the improvementbrought, especially analyzing the evolutionary behavior of eachcriterion
Reconhecimento e personalização de gestos das mãos para interação com páginas web
Get PDFResumoThe Hand Mouse browser extension presented in this paper enablesmouse control on web pages by means of the user’s hand gestures.This tool aims to enhance flexibility and ergonomics, offering anatural alternative to the traditional use of the mouse, potentiallyreducing the risk of repetitive strain injuries. The main innovationsof this paper are the usability studies within the extension‘s userinterfaces and the development of the gesture customization feature.This allows the user to define and train the AI model used in thesoftware with new gestures to perform actions such as moving thecursor, clicking, scrolling up, scrolling down, going back a page,going forward a page and free movement
Jogo digital acessível para crianças com TEA: aprendizagem de matemática com interface tangível e inclusiva
Get PDFABSTRACTThis article discusses the development of an accessible digital gamefor children with ASD, aimed at learning mathematics through anatural interface and computer vision. The methodology adopted isDesign Science Research, which allows problems to be solvedthrough the creation of artifacts. The game was designed,developed and empirically analyzed by a teacher and 11 studentswith ASD and one student without disabilities, aged between 8 and10, from an elementary school in the municipality of Itajaí,considering accessibility criteria for digital games. The resultsshowed the students' interest and involvement, favored by thegame's tangible approach, and contributed to research into digitaleducational games, promoting discussion about differentiatedinterfaces for the target audience of inclusive education
Gamifying Electronic Trading Through a Minecraft Commodities Exchange
Get PDFThis paper explores the integration of a virtual commodities exchangewithin Minecraft, transforming in-game items into tradabledigital assets. By implementing a dynamic electronic trading system,including a limit order book and market-making algorithms,the platform replicates real-world financial market operations in afamiliar and interactive virtual environment. Players engage withthe exchange by buying and selling assets, fostering a player-driveneconomy governed by supply and demand. The integration leveragesMinecraft’s modding capabilities through a custom plugin,facilitating seamless interaction between the game and the tradingsystem. Beyond enhancing gameplay, this approach demonstratessignificant educational potential, offering players and learnersinsights into market dynamics, trading strategies, and economicprinciples in an engaging and risk-free context. Observations ofplayer interactions reveal authentic economic behaviors, furtheremphasizing the platform’s value as a tool for both financial educationand entertainment
Sistema de Monitoramento Remoto da Temperatura de Ninhos de uma Ave Símbolo da Zona Costeira do Sul do Brasil
Get PDFABSTRACTThis paper details the design and development of a birdmonitoring system, focusing on the study of bird breeding. Theproject encompasses the entire development lifecycle:selecting components, assembling the hardware, programmingthe ESP32 microcontroller, and developing a web-based datavisualization interface. The methodology begins withcomponent selection, including the design of a customtemperature sensor, as well as considerations for connectivityand energy efficiency essential for remote deployments.Programming the ESP32 involves configuring modules,implementing time-stamped data logging, and optimizing forlow-power operation. The final phase focuses on creating auser-friendly web interface using HTML, CSS, and JavaScript,providing a seamless experience for data access andvisualization. This system offers a practical, end-to-endsolution for ecological monitoring, enabling researchers totrack environmental parameters in real-time and overextended periods to support habitat preservation effor
Conectando Ideias: Relato de um Encontro de Projetos Parceiros do Programa Meninas Digitais no Amazonas
Get PDFABSTRACTThis paper reports a collaborative meeting between university projects focused on the inclusion of women in computing, held in a region with limited initiatives in this field. The event aimed to foster support networks and share effective strategies for promoting gender equity in technology. The program featured discussions on academic and professional advancement, highlighting practices to enhance the participation of women in computing. Additionally, the presentation of a well-established project with nearly 10 years of experience served as inspiration for a recently launched local initiative. The exchange of experiences demonstrated the transformative potential of such events, emphasizing the importance of expanding similar initiatives to foster diversity, strengthen networks, and promote equitable opportunities in computing
Acesso Aberto e Recursos Educacionais Abertos A Experiência de Redesign de um Repositório Educacional Aberto
Get PDFABSTRACTAccess to information is one of the main topics covered ineducation, and the idea of introducing communityparticipation in the creation, development and propagationof knowledge has increased mainly with the movement indefense of open access and free information. In thiscontext, UNESCO also began to establish educationaldissemination strategies, such as Open EducationalResources (REA). These materials encourage teaching andresearch in the public domain, in addition to encouragingthe use, production and adaptation by third parties and alsoproviding the possibility of collaboration betweeninstitutions. The Arcaz repository, developed by thePET-CoCE group, is based on the group's research into thegrowing importance of disseminating knowledge andinformation in Open Access format. This article presents aheuristic evaluation developed in Arcaz based onInteraction Design Principles. This evaluation, with theparticipation of experts, resulted in the redesign of therepository. The next steps must involve communityparticipation for the participatory construction of newfeatures
Criação de uma rede neural para classificação de amostras d’água conforme normativa CONAMA 357/05 a partir de um dataset da SEMASA
Get PDFABSTRACTThis work presents the creation of a neural network trained using a dataset from SEMASA (Serviço Municipal de Água, Saneamento Básico e Infraestrutura) from Itajaí, containing pH, turbidity, and apparent color data of water bodies from various neighborhoods in the municipality, capable of classifying water samples according to the water types defined by the CONAMA (Conselho Nacional do Meio Ambiente) 357/05 standard for embedding in an IoT device. The dataset is composed of 8,928 records from 2018 to 2023, covering neighborhoods São Roque I and II, Arapongas, and Limoeiro. The selected variables are critical for water quality assessment, where pH indicates the acidity or alkalinity of the water, turbidity measures the presence of suspended particles, and apparent color is a visual indicator of dissolved and suspended materials
Adog: Aplicativo de Auxílio na Adoção Responsável de Animais
Get PDFRESUMOO crescente número de animais em condição de vulnerabilidade no Brasil é um problema de bem-estar animal e saúde pública, agravado pela falta de ferramentas eficazes para adoção. ONGs e protetores independentes enfrentam dificuldades na divulgação de animais para adoção, e adotantes potenciais encontram barreiras para localizar e adotar um pet de maneira segura. Adog é um aplicativo móvel projetado para otimizar o processo de adoção, facilitando a conexão entre adotantes e ONGs por meio de perfis detalhados dos animais, filtros de busca e um sistema inteligente de "match". O aplicativo foi desenvolvido com o uso de ferramentas de código aberto, adotando uma abordagem estruturada que incluiu entrevistas com proprietários de ONGs e ativistas da causa animal, além de uma análise comparativa de outras plataformas semelhantes. Atualmente, o Adog está em fase de implantação e testes com usuários. A expectativa é que a plataforma contribua para o aumento das adoções responsáveis, promovendo a conexão eficaz entre adotantes e ONGs, além de ajudar a reduzir os índices de abandono de animais