IEEE Latin America Transactions最新文献_第4页

A Novel Transformer Less Ultra Gain DC-DC Converter for Renewable Micro Energy Sources 用于可再生微型能源的新型无变压器超增益 DC-DC 转换器

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-08-01 DOI: 10.1109/TLA.2024.10620415

Manikanta Kuraganti;Ramulu Chinthamalla

引用次数: 0

Table of Contents August 2024 目录 2024 年 8 月

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-08-01 DOI: 10.1109/TLA.2024.10620385

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CPP-UNet: Combined Pyramid Pooling Modules in the U-Net Network for Kidney, Tumor and Cyst Segmentation CPP-UNet：用于肾脏、肿瘤和囊肿分割的 U-Net 网络中的组合金字塔池模块

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-08-01 DOI: 10.1109/TLA.2024.10620387

Caio Eduardo Falcão Matos;Geraldo Braz Junior;João Dallyson Sousa de Almeida;Anselmo Cardoso de Paiva

{"title":"CPP-UNet: Combined Pyramid Pooling Modules in the U-Net Network for Kidney, Tumor and Cyst Segmentation","authors":"Caio Eduardo Falcão Matos;Geraldo Braz Junior;João Dallyson Sousa de Almeida;Anselmo Cardoso de Paiva","doi":"10.1109/TLA.2024.10620387","DOIUrl":"10.1109/TLA.2024.10620387","url":null,"abstract":"Renal carcinoma stands prominently as a significant contributor to global cancer-related mortality rates, highlighting the critical importance of early detection and diagnosis in the management of this ailment. Moreover, the rising incidence of kidney tumors poses a challenge in differentiating between malignant and benign lesions using radiographic methods. Therefore, we present CPP-UNet, an innovative convolutional neural network-based architecture designed for the segmentation of renal structures, including the kidneys themselves and renal masses (cysts and tumors), in a computed tomography (CT) scan. Particularly, we investigate the fusion of the Pyramid Pooling Module (PPM) and Atrous Spatial Pyramid Pooling (ASPP) for improving the UNet network by integrating contextual information across multiple scales. Our proposed method yielded promising outcomes in the Kidney and Kidney Tumor Segmentation challenge (KiTS21 and KiTS23) datasets, exhibiting Dice indices of 93.51% and 92.84% for Kidneys and Masses, 90.33% and 92.08% for Renal Masses, and 85.69% and 88.17% for Tumors, respectively.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10620387","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141883116","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

Exploring COVID-19 Trends in Mexico during the Winter Season with Explainable Artificial Intelligence (XAI) 利用可解释人工智能（XAI）探索墨西哥冬季的 COVID-19 趋势

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-06-18 DOI: 10.1109/TLA.2024.10562257

Angélica Guzmán-Ponce;Rosa María Valdovinos-Rosas;Jacobo Leonardo González-Ruíz;Iván Franciso-Valencia;J. Raymundo Marcial-Romero

{"title":"Exploring COVID-19 Trends in Mexico during the Winter Season with Explainable Artificial Intelligence (XAI)","authors":"Angélica Guzmán-Ponce;Rosa María Valdovinos-Rosas;Jacobo Leonardo González-Ruíz;Iván Franciso-Valencia;J. Raymundo Marcial-Romero","doi":"10.1109/TLA.2024.10562257","DOIUrl":"https://doi.org/10.1109/TLA.2024.10562257","url":null,"abstract":"COVID-19 has become the most significant pandemic in recent years. Today, Mexico has recorded millions of infections and deaths since the pandemic started. Around the world, machine learning methods have been used to understand, predict or develop strategies to manage the virus and the pandemic. Although algorithms provide good results, it is necessary to understand why a model makes specific predictions with a particular data set. To explain this question, we apply Explainable Artificial Intelligence (XAI) in this paper. With this, it is possible to understand the characteristics that influence the model decisions when denoting between deaths and survivors. As a case of study, the positive cases detected during the winter season of 2020-2021 and 2021-2022 were considered. In this season, respiratory diseases increased considerably, and in the study period, they influenced the increase in positive cases and the spread of COVID-19. Preliminary results suggest that age is essential when using a Random Forest model. Preliminary results suggest that age is essential when determining the prognosis of a patient infected by COVID-19 in winter seasons.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10562257","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141422500","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

Reclosers Modeling for Temporal Simulation of Distribution Networks in Simulink/ Matlab 在 Simulink/ Matlab 中为配电网络的时态仿真建立重组器模型

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-06-18 DOI: 10.1109/TLA.2024.10562260

Ramayana Pereira;Rodrigo Cesa Dantas de Lima;Helon David M. Braz;Núbia S. Dantas Brito;Pedro Henrique Fernandes Monteiro;Jamile P. N. Amoah

{"title":"Reclosers Modeling for Temporal Simulation of Distribution Networks in Simulink/ Matlab","authors":"Ramayana Pereira;Rodrigo Cesa Dantas de Lima;Helon David M. Braz;Núbia S. Dantas Brito;Pedro Henrique Fernandes Monteiro;Jamile P. N. Amoah","doi":"10.1109/TLA.2024.10562260","DOIUrl":"https://doi.org/10.1109/TLA.2024.10562260","url":null,"abstract":"Over the past few years, Brazils increasing dependence on electricity has caused a continuous growth in demand and, therefore, the need to guarantee long-term energy supply to costumers. Hence, studying the devices that are responsible ensuring this continuity is critical since the improper operation of this equipment can reduce the reliability of the electrical energy distribution system, therefore requiring detailed study that incorporates simulations, modeling, and analysis of response capacity in the face of real loads. Simulink/Matlab is one of the most widely used software programs in academia. However, it does not have readymade templates for protection system equipment such as relays, fuses, and reclosers. Herein, the aim is to model the digital recloser using the S-function block of Simulink/Matlab. The proposed model for the recloser follows the configurations required by Brazilian electricity distribution companies, i.e. four operations divided into fast and slow, the latter one being responsible for permanently opening the section of the system on fault. To validate the modeled device, the IEEE 34-bar system was used, in which several operational cases were considered. The results obtained show that the proposed digital recloser model performed successfully proved to be a promising proposal for protection studies of power distribution systems.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10562260","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141422600","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

Incremental Relaying with Partial Relay Selection for Enhancing the Performance of Underlay Cognitive NOMA Networks 利用部分中继选择的增量中继提高下层认知 NOMA 网络性能

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-06-18 DOI: 10.1109/TLA.2024.10562255

Archana P;Harigovindan V P;Griffith Faustina G;Babu A V

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Power System Stability Improvement Using STATCOM: New Practical Method for Placement and Sizing 使用 STATCOM 提高电力系统稳定性：新的实用布置和选型方法

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-06-18 DOI: 10.1109/TLA.2024.10562256

Jimmy Cesar Gonzales Arispe;Jhoel Arroyo Flores

{"title":"Power System Stability Improvement Using STATCOM: New Practical Method for Placement and Sizing","authors":"Jimmy Cesar Gonzales Arispe;Jhoel Arroyo Flores","doi":"10.1109/TLA.2024.10562256","DOIUrl":"https://doi.org/10.1109/TLA.2024.10562256","url":null,"abstract":"In Latin America, in recent years, several projects with FACTS equipment have been materialized to improve the stability of the power system. Among these, for example, use of SVC equipment in Peru to regulate voltage, and STATCOM in Colombia to support voltage and prevent collapse of electrical areas. Several variables influence the way a STATCOM operates, its size is an important factor, and also the electrical substation where it is installed; these two aspects, although they can be calculated separately, in the real time operation it is evident that their contributions can be optimized, considering them jointly. This article aims to show a new practical methodology to evaluate the location and size of a STATCOM through a sequence of calculations and the application of routine electrical studies executed by system operators, in order to improve voltage and/or angular stability of the units. As a case of practical application, the stability problems of the South Bolivian system were analyzed, as well as the installation of a STATCOM to improve the operational limitations.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10562256","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141424681","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

Power Quality Analysis of a Hybrid Microgrid based on Renewable Energy Sources 基于可再生能源的混合微电网的电能质量分析

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-06-18 DOI: 10.1109/TLA.2024.10562258

Christian René Jiménez Román;Emmanuel Hernández-Mayoral

引用次数: 0

Simplified SEP Approximations of Coherent Digital Modulation Schemes over alpha-kappa-mu Fading Channel α-kappa-mu衰减信道上相干数字调制方案的简化 SEP 近似值

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-06-18 DOI: 10.1109/TLA.2024.10562262

Shreya Tated;Garv Anand;Dharmendra Sadhwani

{"title":"Simplified SEP Approximations of Coherent Digital Modulation Schemes over alpha-kappa-mu Fading Channel","authors":"Shreya Tated;Garv Anand;Dharmendra Sadhwani","doi":"10.1109/TLA.2024.10562262","DOIUrl":"https://doi.org/10.1109/TLA.2024.10562262","url":null,"abstract":"In this paper, we propose novel, simplified yet tight approximations of the error probability expressions of numerous digital modulation schemes over a popular alpha-kappa-mu fading channel. With the help of a suitable approximation of the Gaussian Q-function and utilization of Taylor's series expansion, we facilitate the cumbersome integrals which play a key role in simplification of the performance evaluation metrics like symbol error probability (SEP) of various digital modulation schemes. This facilitates cost effective receiver's design making the overall system economically viable. We further illustrate the accuracy of the proposed SEP expressions with the help of the relative error. An insight on the truncation error (and its upper bound) is also highlighted in this paper. We also compute the relative error in the upper bound of the truncation error to further justify the accuracy of the proposed integrals. Moreover, the asymptotic expressions for the integrals are also provided which gives an idea regarding diversity order of the wireless communication systems for large signal to noise ratios.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10562262","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141422498","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

Dual-View Fusion of Heterogeneous Information Network Embedding for Recommendation 为推荐而嵌入异构信息网络的双视图融合

IF 1.3 4区工程技术

IEEE Latin America Transactions Pub Date : 2024-06-18 DOI: 10.1109/TLA.2024.10562237

Jinlong Ma;Runfeng Wang

{"title":"Dual-View Fusion of Heterogeneous Information Network Embedding for Recommendation","authors":"Jinlong Ma;Runfeng Wang","doi":"10.1109/TLA.2024.10562237","DOIUrl":"https://doi.org/10.1109/TLA.2024.10562237","url":null,"abstract":"Heterogeneous Information Networks (HINs) contain rich semantic information due to their involvement of multiple types of nodes and edges. Heterogeneous network embedding is used to analyze HINs by embedding network information in low-dimensional node representations. However, existing heterogeneous embedding methods either ignore the implicit topological relationships between distant nodes or neglect nodes features and meta-paths information disparities, which reflects that extracting HIN embeddings from a single view may lead to incomplete information extraction. In order to make the information extraction more complete, we propose a dual-view fusion heterogeneous information network embedding method (DFHE) for recommendation tasks. Specifically, it extracts effective features from HINs from both the remote topology view and the semantic aggregation view: the remote topology view uses a meta-graph-guided random walk to capture the topological relationships between remote nodes and learns embeddings through a graph convolutional network (GCN) encoder, while the semantic aggregation view uses an attention mechanism to learn the importance of different meta-paths, node relationships, and aggregates the semantic information of each meta-path. Experimental results on two real-world network datasets demonstrate an enhancement in recommendation task performance under the application of DFHE, compared to the baseline. This improvement persists even when some meta-paths are deleted, thereby verifying the methods effectiveness.","PeriodicalId":55024,"journal":{"name":"IEEE Latin America Transactions","volume":null,"pages":null},"PeriodicalIF":1.3,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=10562237","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141424680","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