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Design and Validation of an IoT System for an Experimental Laboratory Microgrid 实验室微电网物联网系统的设计与验证
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-20 DOI: 10.1109/TLA.2025.10810485
Juan M. Rey;Jonathan Gómez;Natalia Duarte;Iván Hernández;Maria A. Mantilla;Oscar Quiroga
In the energy transition context, electrical microgrids facilitate the integration of renewable generation into the electrical grid, improving the electrical system's reliability and accelerating its decarbonization. However, to promote the technological advancement of these grids, it is necessary to develop tools to validate new technologies and solutions, such as using the Internet of Things (IoT) for their operation and control. This work presents the design, implementation, and validation of an IoT system for an experimental laboratory microgrid developed at Universidad Industrial de Santander. The main design phases of the IoT system are described, beginning with the definition of requirements and extending through the component selection. Validation tests are proposed to verify the functionalities of the IoT system. The results demonstrate that the IoT system successfully enables the transmission and reception of data from external users and servers. The reported experience and the proposed validation tests are relevant for researchers interested in implementing IoT-based stages in existing or future laboratory microgrids.
在能源转型背景下,微电网促进了可再生能源发电并入电网,提高了电力系统的可靠性,加速了电力系统的脱碳。然而,为了促进这些电网的技术进步,有必要开发工具来验证新技术和解决方案,例如使用物联网(IoT)进行其操作和控制。这项工作介绍了桑坦德工业大学开发的实验实验室微电网的物联网系统的设计、实施和验证。描述了物联网系统的主要设计阶段,从需求定义开始,扩展到组件选择。提出了验证测试来验证物联网系统的功能。结果表明,物联网系统成功地实现了来自外部用户和服务器的数据传输和接收。报告的经验和提议的验证测试对于有兴趣在现有或未来的实验室微电网中实施基于物联网的阶段的研究人员是相关的。
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引用次数: 0
Personalized Digital Instructor Based on Arduino for Buerger Exercises in Older Adults with Diabetes: Feasibility Study 基于Arduino的老年糖尿病患者伯格运动个性化数字教练的可行性研究
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-20 DOI: 10.1109/TLA.2025.10810400
Ernesto Ríos Willars;Brandon Emmanuel Delabra Salinas;María Magdalena Delabra Salinas;Daniel Sifuentes Leura;Nereyda Hernández Nava;Alejandro Martínez Ramírez;Rosa Eréndira Fosado Quiroz;Bertha Cecilia Salazar-González
Diabetes in older adults can lead to complications such as peripheral artery disease, neuropathy, and foot ulcers. Accessing treatments can be challenging due to limited resources. Implementing low-cost preventive therapies like Buerger's exercises is essential. However, these exercises must be standardized. The purpose was to develop an Arduino-based electronic system as a gerontechnological tool for homologating Buergers exercises and facilitating their execution by older adults with diabetes mellitus. The Intervention Theory by Sidani guided the development of this study. A feasibility and pilot study with one group, pretest/posttest design, was conducted in twenty older adults with HbA1c 8% and their caregivers in Saltillo, Coahuila, Mexico, from November 2020 to June 2021. Feasibility was measured with an acceptability and satisfaction instrument; the ankle-arm index was measured with 8 Hertz Doppler and neuropathy symptoms with a modified Toronto Clinical Neuropathy Score. The mean age was 67.50 5.61 years old in older adults and 48.32 16.26 in caregivers. The digital instructor was accepted by 73.3% (11 older adults) without any issues; 47.4% (9 older adults) and 26.3% (6 caregivers) expressed high levels of satisfaction. Participants noted significant benefits such as improved peripheral circulation, reduced pain, numbness, and tingling. These promising results underscore the potential of the electronic system to make a noticeable improvement in the lives of older adults with diabetes mellitus and their caregivers. The device was meticulously designed to be user-friendly and accessible, making it ideal gerontechnological tool to manage health at home.
老年人患糖尿病会导致并发症,如外周动脉疾病、神经病变和足部溃疡。由于资源有限,获得治疗可能具有挑战性。实施布格氏运动等低成本的预防性疗法至关重要。但是,这些练习必须标准化。我们的目的是开发一个基于 Arduino 的电子系统,作为一种通用技术工具,用于布格尔运动的标准化,并方便患有糖尿病的老年人进行这些运动。Sidani 的干预理论为本研究的发展提供了指导。2020 年 11 月至 2021 年 6 月期间,在墨西哥科阿韦拉州萨尔蒂略市对 HbA1c 为 8%的 20 名老年人及其护理人员进行了一项可行性试点研究,采用一组、前测/后测设计。可行性通过可接受性和满意度工具进行测量;踝臂指数通过 8 赫兹多普勒进行测量;神经病变症状通过改良的多伦多临床神经病变评分进行测量。老年人的平均年龄为 67.50 5.61 岁,护理人员的平均年龄为 48.32 16.26 岁。73.3%(11 位老年人)接受了数字指导器,没有任何问题;47.4%(9 位老年人)和 26.3%(6 位护理人员)表示非常满意。参与者注意到了明显的益处,如改善外周循环、减轻疼痛、麻木和刺痛。这些令人鼓舞的结果凸显了电子系统明显改善老年糖尿病患者及其护理人员生活的潜力。该设备经过精心设计,方便用户使用,使其成为在家管理健康的理想通用技术工具。
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引用次数: 0
Editorial 2025 编辑2025
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810398
Daniel Ulises Campos Delgado
Editorial of inaugural edition of IEEE Latin America Transactions in 2025.
2025年IEEE拉丁美洲交易创刊号社论。
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引用次数: 0
Optimizing Solar Irradiance Prediction: Feature Selection for All-Sky Image Processing Using a Hybrid Prediction Method 优化太阳辐照度预测:基于混合预测方法的全天图像处理特征选择
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810404
Joylan Nunes Maciel;Gustavo de Souza Campoi;Willian Zalewski;Jorge Javier Gimenez Ledesma;Oswaldo Hideo Ando Junior
The forecasting of solar irradiance is crucial for photovoltaic solar energy generation, as production is subject to intermittency due to climatic conditions, such as cloud cover, wind and, temperature. Based on the Hybrid Prediction Method (HPM), this study investigated the influence of a set of all-sky image processing features on the HPMs Artificial Neural Network prediction accuracy. Using correlation-based attribute selection, three predictive models with different input feature sets were evaluated. The results show that, when considering all horizons together and paired, the Medium set of 6 features achieves prediction accuracy statistically similar to the Complete set with 9 features, reducing the computational time (14.4%) and model input dimensionality (33.3%). However, when comparing individual horizons, the Complete set outperforms the Medium set at 5- and 15-minute horizon, while maintain similar accuracy at the 1-minute horizon. The Reduced set, with three features, consistently underperformed. This study provides news insights into the optimization of solar irradiance forecasting using HPM, contributing to advances in photovoltaic energy forecasting.
太阳辐照度的预测对光电太阳能发电至关重要,因为生产受到诸如云量、风和温度等气候条件的间歇性影响。基于混合预测方法(HPM),研究了一组全天图像处理特征对HPM人工神经网络预测精度的影响。采用基于关联的属性选择方法,对具有不同输入特征集的三种预测模型进行了评价。结果表明,当将所有视界一起考虑和配对时,包含6个特征的Medium集与包含9个特征的Complete集的预测精度在统计上接近,计算时间减少了14.4%,模型输入维数减少了33.3%。然而,当比较单个视界时,完整集在5分钟和15分钟视界上优于中等集,而在1分钟视界上保持相似的精度。具有三个特征的简化集一直表现不佳。本研究为利用HPM优化太阳辐照度预测提供了新的见解,有助于光伏能源预测的进步。
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引用次数: 0
Investigation and Optimization of StringDeduplication with Custom Heuristic in Different Versions of the JVM 在不同版本的JVM中使用自定义启发式方法研究和优化StringDeduplication
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810397
Darlan Noetzold;Anubis Graciela de Moraes Rossetto;Jorge Barbosa;Valderi Reis Quietinho Leithardt
Memory optimization in Java applications is essential for performance and scalability. This paper investigates the efficiency of the StringDeduplication parameter in JVM versions 11, 17, and 21, using a Web Crawler developed in Spring Boot. The results show that the efficiency of StringDeduplication decreased from 34.3% deduplication in version 11 to 3.4% in version 21, with an increase in deduplication time from 1,264 ms to 3,439 ms. To mitigate this problem, a custom solution in C was developed for JVM version 21, which increased deduplication to 31.1% and saved 110.2 MB of memory. The main scientific contribution of this work is the identification of the loss of efficiency of StringDeduplication in the latest JVM versions and the proposal of a custom solution that improves string deduplication, offering a viable alternative for developers and software engineers.
Java应用程序中的内存优化对于性能和可伸缩性至关重要。本文使用Spring Boot中开发的Web Crawler研究了JVM版本11、17和21中StringDeduplication参数的效率。结果表明,StringDeduplication的重复数据删除效率从版本11的34.3%下降到版本21的3.4%,重复数据删除时间从1,264 ms增加到3,439 ms。为了缓解这个问题,为JVM版本21开发了一个用C语言编写的自定义解决方案,该解决方案将重复数据删除提高到31.1%,并节省了110.2 MB内存。这项工作的主要科学贡献是确定了最新JVM版本中StringDeduplication的效率损失,并提出了改进字符串重复数据删除的定制解决方案,为开发人员和软件工程师提供了可行的替代方案。
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引用次数: 0
STAR-IRS Assisted Rate Splitting Multiple Access with Perfect and Imperfect CSI for 6G Communication STAR-IRS辅助速率分割多址与完美和不完美CSI的6G通信
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810403
Aswini Krishnan;Sundaresan Sabapathy;Surendar Maruthu
Incorporating cutting-edge technology like rate splitting multiple access (RSMA) and intelligent reflecting surface (IRS) are essential in 6G communications to satisfy the constantly growing needs for more connection, better reliability, and faster data rates. This paper explores the concept of simultaneously transmitting and reflecting IRS (STAR-IRS) assisted RSMA in the presence of both perfect and imperfect channel state information (CSI). STAR-IRS leverages its dual capability to transmit and reflect signals simultaneously, enhancing spectral efficiency and expanding coverage. So far, in literature, STAR-IRS assisted RSMA system is analyzed in terms of outage probability with perfect CSI scenario. So, in this work, we carry out the performance analysis of STAR-IRS in terms of outage probability and sum rate. Firstly, we derive the analytical expression of the outage probability and sum rate. Secondly, we propose a automatic optimization (AO) algorithm for weighted sum rate (WSR) maximization. The performance analysis is carried out by varying power allocation factor to find its optimality. The derived outage probability and sum rate expressions are validated with Monte Carlo simulations. Also, it is found that on using WSR maximization, the sum rate is enhanced for STAR-IRS based RSMA system when compared with the conventional sum rate maximization.
为满足对更多连接、更高可靠性和更快数据传输速率不断增长的需求,在 6G 通信中采用速率分裂多路存取(RSMA)和智能反射面(IRS)等尖端技术至关重要。本文探讨了在完美和不完美信道状态信息(CSI)同时存在的情况下,同时发射和反射 IRS(STAR-IRS)辅助 RSMA 的概念。STAR-IRS 利用其同时发射和反射信号的双重能力,提高了频谱效率并扩大了覆盖范围。迄今为止,文献中的 STAR-IRS 辅助 RSMA 系统都是在完美 CSI 情况下分析中断概率的。因此,在本研究中,我们从中断概率和总和率两个方面对 STAR-IRS 进行性能分析。首先,我们推导出中断概率和总和率的分析表达式。其次,我们提出了加权总和率(WSR)最大化的自动优化(AO)算法。通过改变功率分配系数进行性能分析,以找到其最优性。得出的中断概率和总和率表达式通过蒙特卡罗模拟进行了验证。同时发现,与传统的和率最大化相比,使用 WSR 最大化时,基于 STAR-IRS 的 RSMA 系统的和率得到了提高。
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引用次数: 0
Through the Youth Eyes: Training Depression Detection Algorithms with Eye Tracking Data 通过青少年的眼睛:用眼动追踪数据训练抑郁症检测算法
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810399
Derick Axel Lagunes-Ramírez;Gabriel González-Serna;Leonor Rivera-Rivera;Nimrod González-Franco;María Y. Hernández-Pérez;José A. Reyes-Ortiz
Depression is a prevalent mental health disorder, and early detection is crucial for effective intervention. Recent advancements in eye-tracking technology and machine learning offer new opportunities for non-invasive diagnosis. This study aims to assess the performance of different machine learning algorithms in. predicting depression in a young sample using eye-tracking metrics. Eye-tracking data from 139 participants were recorded with an emotional induction paradigm in which each participant observed a set of positive and negative emotional stimuli. The data were analyzed to find differences between groups, where the most significant features were selected to train prediction models. The dataset was then split into training and testing sets using stratified sampling. Four algorithms support vector machines (SVM), random forest (RF), a multi-layer perceptron (MLP) neural network, and gradient boosting (GB) were trained with hyperparameter optimization and 5-fold cross-validation. The RF algorithm achieved the highest accuracy at 84%, followed by SVM, GB, and the MLP neural network. Performance metrics such as accuracy, recall, F1-score, precision recall area under the curve (PR-AUC), and Matthews Correlation Coefficient (MCC) were also used to evaluate the models. The findings suggest that eye-tracking metrics combined with machine learning algorithms can effectively identify depressive symptoms in the young, indicating their potential as non-invasive diagnostic tools in clinical settings.
抑郁症是一种普遍存在的精神健康障碍,早期发现对有效干预至关重要。眼球追踪技术和机器学习的最新进展为非侵入性诊断提供了新的机会。本研究旨在评估不同机器学习算法的性能。用眼动追踪指标预测年轻样本的抑郁症。139名参与者的眼动追踪数据被记录在情绪诱导模式下,每个参与者观察一组积极和消极的情绪刺激。对数据进行分析以发现组之间的差异,其中选择最重要的特征来训练预测模型。然后使用分层抽样将数据集分成训练集和测试集。采用超参数优化和5次交叉验证对支持向量机(SVM)、随机森林(RF)、多层感知器(MLP)神经网络和梯度增强(GB)四种算法进行了训练。RF算法的准确率最高,达到84%,其次是SVM、GB和MLP神经网络。准确率、查全率、f1分数、查全率曲线下查全面积(PR-AUC)和马修斯相关系数(MCC)等性能指标也被用于评估模型。研究结果表明,眼动追踪指标与机器学习算法相结合,可以有效地识别年轻人的抑郁症状,表明它们在临床环境中作为非侵入性诊断工具的潜力。
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引用次数: 0
A Novel Approach to Performance Evaluation of Current Controllers in Power Converters and Electric Drives Using Non-Parametric Analysis 基于非参数分析的电力变换器和电力驱动电流控制器性能评估新方法
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810402
Gustavo Ignacio Rivas-Martínez;Jorge Rodas;Edher Herrera;Jesús Doval-Gandoy
In the field of current controllers for power converters and electric motor units, conventional figures of merit (FMs) such as mean squared error (MSE), integral of time multiplied by absolute error (ITAE), or total harmonic distortion (THD) have traditionally been used. The stochastic nature of these FMs introduces variability, which often results in inaccurate comparisons of the controllers' performance. To address this issue, a parametric statistical methodology has recently been proposed. However, it presents certain limitations, such as the assumption of normality. In response to this, the adoption of a non-parametric methodology is suggested in this work, which promises a precise evaluation of the efficiency of current controllers. In this study, we demonstrate that, under parametric approach, when the assumption of normality is violated, there is a significant increase in Type I error. Furthermore, we show that the non-parametric Mann-Whitney U test offers greater sensitivity compared to its parametric counterpart under these circumstances. Thus, the newly proposed methodology aims to optimize the decision-making process in designing high-performance current controllers for applications in power converters and electric motors. This allows for design decisions grounded in rigorous and statistically-based evaluations. The effectiveness of this methodology is confirmed through its application to a real dataset, enhancing its practicality and contributing to a deeper understanding of the subject matter.
在用于电源转换器和电动马达装置的电流控制器领域,传统上使用的是均方误差 (MSE)、时间乘以绝对误差积分 (ITAE) 或总谐波失真 (THD) 等传统的性能指标 (FM)。这些调频的随机性带来了可变性,往往导致控制器性能的比较不准确。为解决这一问题,最近提出了一种参数统计方法。不过,这种方法也存在一定的局限性,例如假设正态性。为此,本研究建议采用非参数方法,以精确评估当前控制器的效率。在这项研究中,我们证明了在参数方法下,当违反正态性假设时,I 类错误会显著增加。此外,我们还证明,在这种情况下,非参数的曼-惠特尼 U 检验比参数检验具有更高的灵敏度。因此,新提出的方法旨在优化设计高性能电流控制器的决策过程,以应用于功率转换器和电机。这样就能在严格的统计评估基础上做出设计决策。通过将该方法应用于真实数据集,证实了其有效性,从而增强了其实用性,并有助于加深对该主题的理解。
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引用次数: 0
Asset Administration Shell Submodel for Representing the Procedural Part of ISA-88 Recipes 表示ISA-88 Recipes过程部分的资产管理Shell子模型
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810401
Johnny Alvarado;Marcela Vegetti;Silvio Gonnet
It is undeniable the benefits that the implementation of digital twins provides to industries. However, the greatest advances in this regard have been made in the definition and implementation of digital twins in discrete manufacturing industries. The development of these twins is still in its early stages in process industries. An important issue in creating digital twins to support decision-making in the process industry is to be able to describe the production procedures. This paper aims to present an Asset Administration Shell submodel that allows the representation of procedural recipes in the batch process industry based on the ISA-88 standard. This paper proposes a conceptual model to represent the Sequential Function Chart language, which is one of the languages proposed by the mentioned standard to represent manufacturing procedure. In addition, the proposal includes a set of rules to map Sequential Function Chart concepts into concepts belonging to the Asset Administration Shell metamodel introduced by Platform Industrie 4.0. These mapping rules would allow the implementation of tools that automatically translate existing Sequential Function Chart models into Asset Administration Shell submodels to reuse existing knowledge for the implementation of digital twins in batch process industries.
数字孪生的实施给各行业带来的好处是不可否认的。然而,在这方面取得的最大进展是在离散制造行业中对数字孪生的定义和实施。在加工工业中,这些孪生体的发展仍处于早期阶段。在流程工业中创建数字孪生以支持决策的一个重要问题是能够描述生产过程。本文旨在提出一个资产管理Shell子模型,该子模型允许在基于ISA-88标准的批处理行业中表示过程配方。时序功能图语言是该标准提出的表示制造过程的语言之一,本文提出了一个表示时序功能图语言的概念模型。此外,该建议还包括一组规则,将顺序功能图概念映射为属于工业平台4.0引入的资产管理Shell元模型的概念。这些映射规则将允许实现自动将现有的顺序功能图模型转换为资产管理外壳子模型的工具,以便在批处理行业中重用现有的知识来实现数字孪生。
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引用次数: 0
Table of Contents January 2025 目录2025年1月
IF 1.3 4区 工程技术 Q3 COMPUTER SCIENCE, INFORMATION SYSTEMS Pub Date : 2024-12-19 DOI: 10.1109/TLA.2025.10810395
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引用次数: 0
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