Juan Jose Betancourt Lozano

Mr. Juan Jose Betancourt Lozano

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Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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25 August 2022 in Plants
Verified
Journal Article
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Manuel Guillermo ForeroManuel Guillermo Forero
Manuel Guillermo Forero
HMHarold MURCIA
Harold MURCIA
DMDehyro Méndez
Dehyro Méndez
JLJuan Jose Betancourt Lozano
Juan Jose Betancourt Lozano
Currently, there are no free databases of 3D point clouds and images for seedling phenotyping. Therefore, this paper describes a platform for seedling scanning using 3D Lidar with which a database was acquired for use in plant phenotyping research. In total, 362 maize seedlings were recorded using an RGB camera and a SICK LMS4121R-13000 laser scanner with angular resolutions of 45° and 0.5° respectively. The scanned plants are diverse, with seedling captures ranging from less than 10 cm to 40 cm, and ranging from 7 to 24 days after planting in different light conditions in an indoor setting. The point clouds were processed to remove noise and imperfections with a mean absolute precision error of 0.03 cm, synchronized with the images, and time-stamped. The database includes the raw and processed data and manually assigned stem and leaf labels. As an example of a database application, a Random Forest classifier was employed to identify seedling parts based on morphological descriptors, with an accuracy of 89.41%.

16 October 2024 in Applied Sciences
Verified
Journal Article
Open access
PDF file
YXYunbo Xie
Yunbo Xie
JMJose Meisel
Jose Meisel
CDCarlos Antonio Meisel Donoso
Carlos Antonio Meisel Donoso
JLJuan Jose Betancourt Lozano
Juan Jose Betancourt Lozano
JYJianqi Yan
Jianqi Yan
RBRoberto Bugiolacchi
Roberto Bugiolacchi
Over the past few decades, the study of leadership theory has expanded across various disciplines, delving into the intricacies of human behavior and defining the roles of individuals within organizations. Its primary objective is to identify leaders who play significant roles in the communication flow. In addition, behavioral theory posits that leaders can be distinguished based on their daily conduct, while social network analysis provides valuable insights into behavioral patterns. Our study investigates five and six types of social networks frequently observed in different organizations. This study is conducted using datasets we collected from an IT company and public datasets collected from a manufacturing company for the thorough evaluation of prediction performance. We leverage PageRank and effective word embedding techniques to obtain novel features. State-of-the-art performance is obtained using various statistical machine learning methods, graph convolutional networks (GCN), automated machine learning (AutoML), and explainable artificial intelligence (XAI). More specifically, our approach can achieve state-of-the-art performance with an accuracy close to 90% for leaders identification with data from projects of different types. This investigation contributes to the establishment of sustainable leadership practices by aiding organizations in retaining their leadership talent.