IEEE Latin America Transactions最新文献_第2页

Dosimetry Strategies for Non-Autonomous UV-C Robots 非自主UV-C机器人的剂量学策略

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-06-20 DOI: 10.1109/TLA.2025.11045646

Maikel Roberto Siqueira Gambetá-Leite;Rodrigo Araujo Real;Chiara das Dores do Nascimento;Everton Granemann Souza

{"title":"Dosimetry Strategies for Non-Autonomous UV-C Robots","authors":"Maikel Roberto Siqueira Gambetá-Leite;Rodrigo Araujo Real;Chiara das Dores do Nascimento;Everton Granemann Souza","doi":"10.1109/TLA.2025.11045646","DOIUrl":"https://doi.org/10.1109/TLA.2025.11045646","url":null,"abstract":"This study aimed to evaluate the coverage and disinfection effectiveness of SIDUV-C, a non-autonomous UV-C robot operating at a wavelength of 254 nm and a power output of 3900 W, which made it the most powerful in its category. Experimental methods included the determination of UV irradiation doses, UV-Vis spectral analysis, and modeling of irradiance fields to estimate the systems ability to deliver adequate doses of UV energy to target surfaces or airborne pathogens. Commercially available dosimetric films sensitive to UV-C radiation were employed to quantify doses across different spatial regions, and their accuracy was validated against UV spectroradiometry techniques and microbiological assays with methicillin-resistant Staphyloccoccus aureus (MRSA). The results demonstrated that both dosimetric films and spectroradiometer measurements consistently indicated the robot's rapid and effective disinfection performance across an unshaded area of 12.25 m2. The doses delivered were sufficient to neutralize a wide range of bacterial species commonly found in hospital environments across Latin America, including multidrug-resistant pathogens, thus underscoring the potential of UV-C disinfection robots as a critical tool in mitigating antimicrobial resistance in healthcare settings.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 7","pages":"619-627"},"PeriodicalIF":1.3,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=11045646","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144331819","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

Analysis and study of complete and incomplete combustion in a internal combustion engine using different amounts of biogas 使用不同量的沼气对内燃机完全燃烧和不完全燃烧的分析和研究

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974370

Andrea Elizabeth Pérez;Erik Zamora Gomez;Giorgiy Polupan

引用次数: 0

Evaluating Robustness and Reliability of a C-NIDS for IoT Networks in Virtualized Environments 虚拟环境下物联网网络C-NIDS的鲁棒性和可靠性评估

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974426

Agnaldo Batista;Carlos Pedroso;Samuel Brísio;Guilherme Rodrigues;Aldri Santos

{"title":"Evaluating Robustness and Reliability of a C-NIDS for IoT Networks in Virtualized Environments","authors":"Agnaldo Batista;Carlos Pedroso;Samuel Brísio;Guilherme Rodrigues;Aldri Santos","doi":"10.1109/TLA.2025.10974426","DOIUrl":"https://doi.org/10.1109/TLA.2025.10974426","url":null,"abstract":"Protecting thousands of smart devices across multiple IoT domains requires robust and collaborative security solutions, such as Collaborative Network Intrusion Detection Systems (C-NIDS). In this context, collaboration among NIDS improves intrusion detection by sharing information about local threats. However, most current solutions neglect the reliability and robustness assessment of these systems, especially when we consider C-NIDS. Thus, the lack of standardized and robust assessments to measure the reliability and accuracy of C-NIDS in attacks detection results in significant uncertainties regarding their ability to correctly identify threats. In this paper, we present an evaluation of a collaborative NIDS that integrates standalone NIDS to share information about detected and mitigated threats, improving overall intrusion detection. The evaluation took place in a virtualized IoT environment and results showed that collaborative NIDS detected DDoS attacks with an accuracy of at least 99.94%, a minimum recall of 99.94%, a precision of 100%, and F1 score of 1 in all evaluated scenarios. Such results highlight the development and adoption of uniform evaluation criteria to ensure the effectiveness and reliability of C-NIDS.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 5","pages":"363-370"},"PeriodicalIF":1.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10974426","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860807","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 Ultra-Wide-Stopband Microwave Bandpass Filter with Multiple Transmission Zeros by Integrating an L-Shaped Bandpass Filter and a Stepped Impedance Lowpass Filter 集成l型带通滤波器和阶跃阻抗低通滤波器的紧凑超宽阻带微波带通滤波器

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974366

Ramkumar S;Anitha M;Boopathi Rani R;Muthuramya C

{"title":"Compact Ultra-Wide-Stopband Microwave Bandpass Filter with Multiple Transmission Zeros by Integrating an L-Shaped Bandpass Filter and a Stepped Impedance Lowpass Filter","authors":"Ramkumar S;Anitha M;Boopathi Rani R;Muthuramya C","doi":"10.1109/TLA.2025.10974366","DOIUrl":"https://doi.org/10.1109/TLA.2025.10974366","url":null,"abstract":"A compact ultra-wide-stopband microwave bandpass filter is introduced in this work using an L-shaped quarter-wavelength resonator and stepped impedance resonators. The bandpass filter (BPF-I) is designed at 2.1 GHz (f) using an L-shaped quarter-wavelength line. The lowpass filter is developed at 4 GHz using stepped impedance resonators. The introduced ultra-wide-stopband filter is created through integrating the BPF-I and the lowpass filter. Filter size reduction is achieved through the L-shaped quarter-wavelength line, while the ultra-wide-stopband is attained through the stepped impedance resonators. The mathematical analysis of the introduced ultra-wide-stopband bandpass filter is conducted through the extraction of ABCD and S-parameters. The lumped elements equivalent circuits are realized for the introduced filter, and their S-parameters are plotted. The introduced filter is fabricated on an FR4 substrate, and its S-parameters are measured. The comparison of mathematical analysis, EM simulated, circuit simulated, and measured results, showing good agreement. Measurements show a 140.4% fractional bandwidth (FBW), better than 20 dB return loss, higher than 28 dB rejection up to 30 GHz (14.3f) in the out-of-band with many transmission zeros, and 0.8 dB insertion loss. 0.23g x 0.37g is the overall dimension of the introduced filter.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 5","pages":"437-443"},"PeriodicalIF":1.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10974366","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860784","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

An Aggregator-Based Market Modelling with an Impact of Risk Under Uncertainty 基于聚合器的市场建模与不确定性下的风险影响

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974375

Pavani Thallapally;Debasmita Panda

{"title":"An Aggregator-Based Market Modelling with an Impact of Risk Under Uncertainty","authors":"Pavani Thallapally;Debasmita Panda","doi":"10.1109/TLA.2025.10974375","DOIUrl":"https://doi.org/10.1109/TLA.2025.10974375","url":null,"abstract":"In the Electricity market the increased penetration of renewable energy sources (RES) and associated uncertainties impose challenges to determine the day-ahead distribution locational market prices effectively and also these uncertainties can jeopardize grid stability and reliability. RES aggregators compete to increase their profit but their intermittent nature adds financial risks to aggregators (As). The main objective of this paper is to model a day-ahead electricity market by considering RES aggregators as participants to trade energy effectively to maintain a dynamic energy balance. Instead of relying on existing probabilistic forecast methods to account for the variable uncertain nature of RES, this paper uses a novel data-driven forecasting method to predict variable RES power generation accurately. The proposed model follows a three stage approach. The first stage involves forecasting PV and wind output power with multiple scenarios. In the second stage, a scenario-based multi-aggregator market modelling is performed where aggregators submit their bids to the distribution network operator, who then clears the market by generating price signals. Uncertainties of RES aggregators lead to financial risk for aggregators. Hence, the third stage involves, risk assessment using value at risk (VaR) and conditional value at risk (CVaR) are applied to different scenarios for evaluating the potential portfolio losses within a specified time horizon and confidence level. To evaluate the effectiveness of the proposed model, it is tested on a modified 33-bus test system which shows effective energy trading at a distribution system with a considerable marginal range of voltage violations. The proposed novel three-stage model aims to improve the distribution level electricity markets efficiency and reliability, benefiting RES market participants and consumers alike.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 5","pages":"415-426"},"PeriodicalIF":1.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10974375","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860808","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

Design of a Transformerless DC Regulator with Reduced Redundant Power Processing for a Residential DC Microgrid 为住宅直流微电网设计减少冗余功率处理的无变压器直流稳压器

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974364

Iván Alfonso Reyes-Portillo;Saúl Rolando Méndez-Elizondo;Jorge Alberto Morales-Saldaña;Claudia Angélica Rivera-Romero;Dora Luz Castro-López

引用次数: 0

Enhancing Cu2ZnSnS4 Solar Cell Efficiency through Antimony Substitution for Tin: A SCAPS-1D Simulation Study 用锑取代锡提高Cu2ZnSnS4太阳能电池效率：SCAPS-1D模拟研究

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974365

Sushmita Chaudhari;Kannan P.K.

{"title":"Enhancing Cu2ZnSnS4 Solar Cell Efficiency through Antimony Substitution for Tin: A SCAPS-1D Simulation Study","authors":"Sushmita Chaudhari;Kannan P.K.","doi":"10.1109/TLA.2025.10974365","DOIUrl":"https://doi.org/10.1109/TLA.2025.10974365","url":null,"abstract":"SCAPS-1D, a one-dimensional solar cell simulator, provides a valuable tool for predicting device performance based on layer-by-layer material properties. Copper Zinc Tin Sulfide (CZTS) has emerged as a promising absorber material due to its exceptional light absorption coefficient and the abundance and non-toxic nature of its constituent elements. This study leverages SCAPS-1D to investigate the working mechanism of CZTS-based solar cells. We simulate a Mo/CZTS/CdS/ZnO device structure under AM 1.5 spectrum illumination and 300 K temperature, analyzing the impact of individual layer thickness on photovoltaic performance. Further, a comparative analysis explores the influence of various n-type materials.. In addition, the introduction of antimony (Sb) doping into CZTS leads to a significant change in efficiency of the cell. The efficiency of Sbdoping CZTS attained 21.90%, while there was a great improvement by 3% via reduced recombination losses and enhanced photocurrent. This work gives an insight into the possibility of Sb doping for the improvement in the performance of thin-film solar cells.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 5","pages":"380-386"},"PeriodicalIF":1.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10974365","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860804","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

Table of Contents May 2025 目录2025年5月

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974371

引用次数: 0

Automatic Detection of Dynamic Wind Conditions in Mexican California: A Machine Learning-Driven Advancement in Wind Management 墨西哥加利福尼亚州动态风况的自动检测：机器学习推动风能管理进步

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974369

Magali Arellano Vázquez;Marlene Zamora Machado;Miguel Robles Pérez;Oscar Jaramillo Salgado;Carlos Minutti Martinez

{"title":"Automatic Detection of Dynamic Wind Conditions in Mexican California: A Machine Learning-Driven Advancement in Wind Management","authors":"Magali Arellano Vázquez;Marlene Zamora Machado;Miguel Robles Pérez;Oscar Jaramillo Salgado;Carlos Minutti Martinez","doi":"10.1109/TLA.2025.10974369","DOIUrl":"https://doi.org/10.1109/TLA.2025.10974369","url":null,"abstract":"Accurate detection and classification of wind states is crucial for accurately assessing and predicting wind energy production, fire spread behavior, air quality monitoring, and understanding complex meteorological phenomena. The complex nature of wind necessitates advanced data analysis techniques to extract meaningful patterns from meteorological datasets. This study presents a stochastic wind classification and identification analysis based on a Gaussian Mixture Model (GMM) clustering method applied to a case study in La Rumorosa'', Mexican California. By analyzing four meteorological variables (relative humidity, atmospheric pressure, wind speed, and wind direction) over five years, the method automatically identifies distinct wind conditions that can be defined as climate states, including well-known regional phenomena like Santa Ana winds and local orographic winds. Accurate detection of wind states enables better forecasting of wind energy potential at favorable sites, wildfire risk management through predicted fire behavior and monitoring pollutant/allergen dispersal patterns. The proposed approach offers a reliable, computationally efficient method for detecting wind patterns, extending to different geographical regions impacted by diverse wind phenomena.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":"23 5","pages":"387-396"},"PeriodicalIF":1.3,"publicationDate":"2025-04-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10974369","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860838","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

Fault Detection System for Bearings in Electric Motors using Variational Auto Encoders 基于变分自动编码器的电机轴承故障检测系统

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2025-04-22 DOI: 10.1109/TLA.2025.10974368

Alonso Menéndez-González;Luis Magadán;Juan Carlos Granda Candás;Francisco José Suárez Alonso

引用次数: 0