Recent Submissions
In an ideal scenario, power systems should operate with constant, balanced, and uninterrupted currents, both in amplitude and frequency. However, reality often presents significant variations due to multiple factors, impacting power quality. This study aimed to develop an effective model for predicting harmonic distortions using a Long Short-Term Memory (LSTM) neural network approach, combined with Dropout techniques to mitigate overfitting. In the first phase, focused on the 04S3 ...
This study describes the application of the Random Forest algorithm in sentiment analysis of digital games, categorizing text into positive, negative, or neutral sentiments. The research aims to deepen the understanding of player interactions with games, providing relevant insights for companies in a constantly evolving industry. The methodology employed includes the collection of a dataset containing 640,987 player reviews and meticulous preprocessing to ensure data quality. The datase...
Access to quality education is extremely important for the population, and several aspects can influence students' academic performance. Through the school census, it is possible to know the resources made available by teaching units. In the final stage of basic education, through an evaluation system, such as ENEM, it is possible, in addition to other objectives, to measure the quality of teaching in schools based on the performance of their respective students. Within this scenario, knowi...
Technological advances allow companies to deliver customized software to a demanding audience. And continuous monitoring and log analysis are important tools for increasing the level of user satisfaction. This work applies feature selection and machine learning techniques to identify attributes that influence the user experience in web systems. The data analyzed are logs captured by the Dynatrace tool, generated by the IDEIA system, initially composed of four tables, totaling 106 attributes a...
The present study proposes a new approach to the renovation of the electric energy meter park considered obsolete from a regulatory point of view. THE significant number of old meters still in use, combined with to the approaches currently employed, has generated high costs operational and exorbitant investments. It therefore becomes It is essential to seek more efficient alternatives. In that regard, The objective of the study is to improve cost efficiency operational, throug...
Access to quality education is of paramount importance importance for the population, and several aspects can be influence students’ academic performance. Through the census school and it is possible to know the resources made available by teaching units. In the final stage of basic education, through of an assessment system, such as ENEM, it is possible, to In addition to other objectives, measuring the quality of teaching in schools based on the performance of their respective studen...
The recognition of traffic signs is one of the many utilities enabled by embedded systems. Through the use of vehicle cameras, it is possible to capture and classify traffic signs with the aid of Artificial Intelligence, specifically Convolutional Neural Networks. In addition to addressing the basic problem solved in the literature, which consists of detecting and classifying the type of traffic sign, the present project achieved a methodology for creating databases and models to evaluat...
Currently, there is a feeling of public insecurity in the world, as tranquility and order have been stolen by terrorist attacks, gender violence and other crimes against people and property. Writing and researching on the issue of crime and violence is not an easy task, much less facilitated by government agencies that have a monopoly on recording, handling and systematizing data on facts and phenomena that involve public safety. In Brazil, the Federal Government, in an attempt to r...
Aphasia is a language disorder caused by injury or dysfunction in the brain and directly affects the individual's communication. The most common cause of aphasia is stroke and traumatic brain injury (TBI), mainly in the left hemisphere, where language function is usually located. Approximately one-third of people who have had a stroke develop aphasia. The severity of aphasia changes over time, and some aspects of language may improve, while others remain compromised. The aphasic ind...
Air pollution is a critical factor that harms biodiversity, ecosystems, and human health. The increase in pollutant concentrations due to the growth of urban and industrial areas has led to increased scientific discussions on this topic, and computational modeling is an important management tool for decision-making. In this sense, the main objective of this work is to evaluate the performance of the air quality model WRF-Chem (Weather Research and Forecasting with Chemistry) to determine...