IEEE Latin America Transactions最新文献

Toward a new dataset: Mexican Traffic Signs ReWaIn-MTS for detection using deep learning 迈向新数据集：墨西哥交通标志rewin - mts，用于深度学习检测

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045643

Daniela Bolaños-Flores;Tania Aglae Ramirez-delreal;Hamurabi Gamboa-Rosales;Guadalupe O. Gutierrez-Esparza

{"title":"Toward a new dataset: Mexican Traffic Signs ReWaIn-MTS for detection using deep learning","authors":"Daniela Bolaños-Flores;Tania Aglae Ramirez-delreal;Hamurabi Gamboa-Rosales;Guadalupe O. Gutierrez-Esparza","doi":"10.1109/TLA.2025.11045643","DOIUrl":"https://doi.org/10.1109/TLA.2025.11045643","url":null,"abstract":"A variety of factors along the road can endanger the safety of drivers or pedestrians and lead to high-impact accidents while driving, which is why traffic signs are essential elements that provide information about the condition of the road during the trip. Traffic sign detection and classification is a research area in computer vision. Its applications are mainly in autonomous conduction or assistance driving. Convolutional neural networks (CNNs) have outstanding detection results compared to conventional methods. In this work, we employed machine learning techniques based on CNNs to categorize and detect Mexican traffic signs. A dataset focused on traffic signs was outlined for the Mexican territory within the main urban roads in eight different cities. The dataset contains 2,283 road elements divided into 37 classes for training and validation of algorithms; a novel methodology is proposed to apply data augmentation and obtain better performance in classification and detection models. The mean Average Precision (mAP) metric compares the performance in state-of-the-art detection methods, particularly YOLOv5, YOLOv8, and the Transformer DETR, obtaining better results with trained models incorporating data augmentation.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 7","pages":"584-591"},"PeriodicalIF":1.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11045643","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Local Volt-Var Control Applied in an Islanded Microgrid Using Supervised Learning Techniques 基于监督学习技术的孤岛微电网局部伏无控制

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045645

Diego Dias Domingues;Sérgio José Melo Almeida;Eduardo Antonio César Costa

{"title":"Local Volt-Var Control Applied in an Islanded Microgrid Using Supervised Learning Techniques","authors":"Diego Dias Domingues;Sérgio José Melo Almeida;Eduardo Antonio César Costa","doi":"10.1109/TLA.2025.11045645","DOIUrl":"https://doi.org/10.1109/TLA.2025.11045645","url":null,"abstract":"The electrical sector pursuit of technical and ecological alternatives makes it possible to integrate and cooperatively optimize dispersed energy resources, enhancing the stability, dependability, and resilience of contemporary energy systems. Microgrids and artificial intelligence are two ideas that could be included into contemporary power grids in an effort to lower costs and pollution emissions. This work proposes a new energy control and management strategy based on smart devices in this context. It explores machine-learning techniques for implementing supervised learning algorithms to perform automatic volt-var control adjustments and mitigate voltage fluctuations at the point of common coupling using smart inverters. The techniques explored and compared in this study include multilayer perceptron, SVM, and random forest. The results were consistent, with average accuracies above 90%, indicating the relevance of the analyzed models for this application. Thus, this research seeks to improve power quality in islanded microgrids with high penetration of distributed generation and explore the potential of artificial intelligence in decision-making processes.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 7","pages":"600-608"},"PeriodicalIF":1.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11045645","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rapid Prototyping of FPGA Controlled Common Ground Single-Phase Transformerless Five-Level Inverter using Xilinx System Generator 基于Xilinx System Generator的FPGA控制共地单相无变压器五电平逆变器的快速原型设计

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045647

Ravali Palakurthi;Kirubakaran Annamalai

{"title":"Rapid Prototyping of FPGA Controlled Common Ground Single-Phase Transformerless Five-Level Inverter using Xilinx System Generator","authors":"Ravali Palakurthi;Kirubakaran Annamalai","doi":"10.1109/TLA.2025.11045647","DOIUrl":"https://doi.org/10.1109/TLA.2025.11045647","url":null,"abstract":"This paper presents a Field Programmable Gate Array (FPGA) implementation for rapid prototyping of a new single-phase transformerless five-level inverter for PV applications. The inverter features a reduced device count, a common ground that eliminates the leakage current issue, and 100% DC utilization. It is capable of supplying both real and reactive power. A simple proportional-resonant (PR) controller is developed and uses a level-shifted pulse width modulation scheme to generate the firing pulses. Grid synchronization is achieved using a robust arc-tangent method-based phase-locked loop (PLL) strategy. To evaluate the open-loop performance, an experimental prototype is developed, and its responses are presented. Moreover, a hardware-in-the-loop (HIL) co-simulation is performed for grid interface to achieve real-time constraints on an Atlys Spartan 6 FPGA using Xilinx System Generator in the MATLAB/Simulink environment, and the results are reported. Finally, a detailed comparison of various five-level inverter topologies is presented to highlight the merits of the proposed topology.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 7","pages":"609-618"},"PeriodicalIF":1.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11045647","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

PAPR Reduction Technique for Mobile Communication Systems Using Neural Networks 基于神经网络的移动通信系统PAPR降低技术

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045671

Bianca S. de C. da Silva;Pedro H. C. de Souza;Luciano L. Mendes

引用次数: 0

Design and Validation of an ABS and TCS Control Strategy Applied in an Automotive Simulator Using Model-Based Design Methodology 基于模型的汽车模拟器ABS与TCS控制策略设计与验证

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045641

Igor Sales Bezerra Souza;Lucas Torres;André Murilo;Rafael Rodrigues da Silva

引用次数: 0

Table of Contents July 2025 目录2025年7月

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045668

引用次数: 0

Multi-Objective Optimization for Safety in the Grounding of AC Substations 交流变电站接地安全的多目标优化

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045670

Diego Arias-Cazco;Luis Cruz-Panchi

引用次数: 0

Enhanced YOLOv8 for Detecting Multiple Defects on Bridge Surfaces 增强的YOLOv8用于检测桥梁表面上的多个缺陷

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045669

Ruiping Li;Linchang Zhao;Hao Wei;Bocheng OuYang;Bing Fang;Yongchi Xu;Guoqing Hu

{"title":"Enhanced YOLOv8 for Detecting Multiple Defects on Bridge Surfaces","authors":"Ruiping Li;Linchang Zhao;Hao Wei;Bocheng OuYang;Bing Fang;Yongchi Xu;Guoqing Hu","doi":"10.1109/TLA.2025.11045669","DOIUrl":"https://doi.org/10.1109/TLA.2025.11045669","url":null,"abstract":"With the advancement of machine vision, numerous models have been created to detect imperfections in bridges. However, the bulk of these models are designed for single defect detection and are not adept at managing cases with concurrent multiple defects. As a result, quickly recognizing the array of defects on bridge surfaces is still a major obstacle. In response to this challenge, the current research introduces the YOLOv8-CBAM-Wise-IoU model, specifically crafted for the detection of seven distinct bridge surface defect categories. This model integrates the CBAM mechanism for focusing attention and the Wise-IoU for calculating loss, with its effectiveness measured by metrics including accuracy, retrieval rate, F1 measure, and mAP50. Rigorous ablation analyses and benchmarking against both single-tier and multi-tier deep learning frameworks were performed to substantiate the models utility. The YOLOv8-CBAM-Wise-IoU model exhibited formidable performance, recording an accuracy rate of 97.9%, a retrieval rate of 76%, an F1 measure of 58%, an mAP50 of 55.4%, and an mAP50-95 of 32.4%. These results outstrip those of standard models and other ablation variations, emphasizing the models ability to boost the precision and robustness of detecting various defect types on bridge surfaces. Code is available at https://github.com/IamSunday/Enhanced-YOLOv8-for-Detecting-Multiple-Defects-on-Bridge-Surfaces.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 7","pages":"546-555"},"PeriodicalIF":1.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11045669","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331814","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Brazilian Stock Market Forecast with Heterogeneous Data Integration for a Set of Stocks 一组股票异质数据整合的巴西股市预测

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045642

Michele Jackeline Andressa Rosa;Marcos Roberto Souza;Carlos Leandro Silva Machado;Sandro José Rigo;Jorge Luis Victória Barbosa

{"title":"Brazilian Stock Market Forecast with Heterogeneous Data Integration for a Set of Stocks","authors":"Michele Jackeline Andressa Rosa;Marcos Roberto Souza;Carlos Leandro Silva Machado;Sandro José Rigo;Jorge Luis Victória Barbosa","doi":"10.1109/TLA.2025.11045642","DOIUrl":"https://doi.org/10.1109/TLA.2025.11045642","url":null,"abstract":"The significant growth of the Brazilian stock market, coupled with the increase in investors in riskier assets, has generated a demand for automated forecasting tools. This research investigated the behavior and movement of stocks in the Brazilian market by integrating historical price series and textual data extracted from sentiments in X old Twitter messages and news collected from Google News. The analysis used natural language processing techniques for sentiment analysis, enabling an efficient fusion between numerical and textual information. Experiments were carried out with the assets PETR4, VALE3, BBDC4, and ITUB4, applying the Long Short Term Memory, Deep Neural Network, and Linear Regression models to predict the behavior of these assets. The results indicated that the LSTM models, especially Model 2, presented the best performance in terms of predictive capacity, with the lowest values of RMSE 0.0171 and high values of coefficint of determination ranging from 0.9707 to 0.9873. The study concludes that integrating numerical and textual data, combined with deep learning techniques, offers a promising approach to stock market forecasting, increasing forecasting gains.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 7","pages":"572-583"},"PeriodicalIF":1.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11045642","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Compact 4-Port MIMO Antenna-Diplexer Utilizing Slotted-HMSIW Technology 紧凑的4端口MIMO天线双工器利用开槽hmsiw技术

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045644

Divya Chaturvedi;Tiruganesh Lanka;Arvind Kumar

{"title":"Compact 4-Port MIMO Antenna-Diplexer Utilizing Slotted-HMSIW Technology","authors":"Divya Chaturvedi;Tiruganesh Lanka;Arvind Kumar","doi":"10.1109/TLA.2025.11045644","DOIUrl":"https://doi.org/10.1109/TLA.2025.11045644","url":null,"abstract":"A new design for a 4-port multiple input multiple output (MIMO) self-diplexing antenna is introduced, utilizing half-mode substrate integrated waveguide (SIW) technology. This antenna operates simultaneously at 4.9 GHz for WLAN and 5.8 GHz for ISM band communications, maintaining an isolation of approximately 30 dB. By employing the half-mode topology, the antenna size is reduced by 50% while preserving the dominant mode TE110 characteristics. To enhance bandwidth, a rectangular slot is etched at the centre of each cavity, splitting the dominant mode into odd-TE110 and even-TE110 modes. Through careful optimization of antenna parameters and the perpendicular placement of radiating elements for different frequencies, the design ensures self-diplexing property. To validate the design, a prototype of the antenna is manufactured, and experimental results are verified with simulations. The proposed antenna demonstrates a peak gain of 5.2 dBi in the lower-frequency band and 5.9 dBi in the upper-frequency band, with a high efficiency exceeding 94% in both of the frequency bands. Additionally, all MIMO-diversity parameters were found to be within satisfactory limits.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 7","pages":"628-635"},"PeriodicalIF":1.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11045644","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331816","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0