Gonzalo Tejera
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Gonzalo Tejera has a total of 66 co-authors. Here are the top co-authors by number of shared publications:
Alfredo Weitzenfeld
Computer Science and Eng Dept, University of South Florida, Tampa, FL, USA
7 shared publicationsMartin Llofriu
Computer Science and Eng Dept, University of South Florida, Tampa, FL, USA
7 shared publications- Ewelina Bakala
Universidad de la República
6 shared publications Alejandra Barrera
Instituto Tecnológico Autónomo de México
5 shared publications- Juan Pablo Hourcade
The University of Iowa, Iowa City, Iowa, USA
5 shared publications - Mercedes Marzoa Tanco
Universidad de la República, Facultad de Ingeniería, Montevideo, Uruguay
4 shared publications
Latest Publications
- 9 September 2025
- Published by Springer Nature
- p. 430-451
From Prototype to the Classroom: Iterative Development of Conditionals in Early Childhood Robotics
- 9 September 2025
- Published by Springer Nature
- p. 430-451
From Prototype to the Classroom: Iterative Development of Conditionals in Early Childhood Robotics
- Open Access
- 4 September 2025
- Published by Universidad de la República, Facultad de Agronomía in Agrociencia Uruguay
- Vol. 29, e15258
Integrating advanced robotics for precision agriculture and sustainability
Agricultural production is a cornerstone of Uruguay's economy, contributing significantly to its GDP with an impact of approximately 11 points. This sector is characterized by its high technological demand and a declining labor force. Traditionally, the agricultural workforce has not required extensive technical skills, but the rapid advancement of technology necessitates a shift towards more technologically adept labor. Thus, the adoption of advanced technologies and the retraining of the workforce are imperative. Labor retraining within the agricultural domain is essential to fortify the sector's competitiveness, sustainability, and resilience amidst contemporary challenges. Precision agriculture advocates integrating cutting-edge technologies to optimize crop management and agricultural resource utilization. Implementing autonomous robotics has the potential to mitigate labor requirements, foster workforce technological education, and propel advancements toward precision agriculture. Founded in 2013, the MINA group at the Faculty of Engineering of the University of the Republic (Uruguay) has been actively engaged in robotics projects tailored for agricultural applications. Initially focusing on orchards of pome fruits from 2013 to 2023, the group undertook tasks such as harvest support and estimation of harvest quantity and quality. Subsequently, efforts have been directed towards pest control measures targeting pests such as birds and ants, and weed management. This paper delineates the intricacies of these distinct projects, elucidating the technologies employed and developed, outlining achieved results to date, and envisaging the potential for widespread adoption of this technology at a feasible cost.
- 4 September 2025
- Published by Universidad de la República, Facultad de Agronomía in Agrociencia Uruguay
- Vol. 29, e15258
Open AccessIntegrating advanced robotics for precision agriculture and sustainability
Agricultural production is a cornerstone of Uruguay's economy, contributing significantly to its GDP with an impact of approximately 11 points. This sector is characterized by its high technological demand and a declining labor force. Traditionally, the agricultural workforce has not required extensive technical skills, but the rapid advancement of technology necessitates a shift towards more technologically adept labor. Thus, the adoption of advanced technologies and the retraining of the workforce are imperative. Labor retraining within the agricultural domain is essential to fortify the sector's competitiveness, sustainability, and resilience amidst contemporary challenges. Precision agriculture advocates integrating cutting-edge technologies to optimize crop management and agricultural resource utilization. Implementing autonomous robotics has the potential to mitigate labor requirements, foster workforce technological education, and propel advancements toward precision agriculture. Founded in 2013, the MINA group at the Faculty of Engineering of the University of the Republic (Uruguay) has been actively engaged in robotics projects tailored for agricultural applications. Initially focusing on orchards of pome fruits from 2013 to 2023, the group undertook tasks such as harvest support and estimation of harvest quantity and quality. Subsequently, efforts have been directed towards pest control measures targeting pests such as birds and ants, and weed management. This paper delineates the intricacies of these distinct projects, elucidating the technologies employed and developed, outlining achieved results to date, and envisaging the potential for widespread adoption of this technology at a feasible cost.
- Open Access
- 23 June 2025
- Published by Association for Computing Machinery (ACM)
- p. 672-683
Moving Beyond Stereotypes: How Kindergarten Robotics Activities Shape Children's Imaginaries About Robots
- 23 June 2025
- Published by Association for Computing Machinery (ACM)
- p. 672-683
Open AccessMoving Beyond Stereotypes: How Kindergarten Robotics Activities Shape Children's Imaginaries About Robots
- Open Access
- 23 June 2025
- Published by Association for Computing Machinery (ACM)
- p. 1027-1038
Robotito Test in Practice: A Classroom Evaluation
- 23 June 2025
- Published by Association for Computing Machinery (ACM)
- p. 1027-1038
Open AccessRobotito Test in Practice: A Classroom Evaluation
- Open Access
- 21 July 2024
- Published by Centro Latino Americano de Estudios en Informatica in CLEI Electronic Journal
- Vol. 27 (2) , 5:1-5:23
Simulation-based Reinforcement and Imitation Learning for Autonomous Sailboat Navigation in Variable Environmental Conditions
In light of escalating concerns over climate change, harnessing oceanic data becomes increasingly urgent. Oceans serve as linchpins in understanding the intricate dynamics governing climate phenomena, exerting pivotal influence over global weather patterns and ecological systems. Despite scientific consensus on climate change impacts, including temperature shifts and acidification, a lack of data infrastructure hampers understanding marine ecosystems.This paper presents an adaptive control system for autonomous sailboats that aims to navigate efficiently in varied conditions by favoring the acquisition of oceanographic data. Combining reinforcement and imitation learning, the controller emulates human decision-making, enabling robust navigation. While showcasing promising results, challenges persist in adverse varied conditions. This challenge is exacerbated when confronting necessitating adaptive control mechanisms resilient to wear and tear.Simulators are vital for training due to the need for vast data volumes. Real-world data collection is costly and risky, while simulations accelerate learning. This study employs a simulator operating at ten times real-time speed, significantly simplifying scenario generation by adjusting factors such as sailboat position, orientation, target location, water current, and wind.Nevertheless, this novel approach signifies progress in addressing climate challenges and advancing oceanic research, using advanced computational methods
- 21 July 2024
- Published by Centro Latino Americano de Estudios en Informatica in CLEI Electronic Journal
- Vol. 27 (2) , 5:1-5:23
Open AccessSimulation-based Reinforcement and Imitation Learning for Autonomous Sailboat Navigation in Variable Environmental Conditions
In light of escalating concerns over climate change, harnessing oceanic data becomes increasingly urgent. Oceans serve as linchpins in understanding the intricate dynamics governing climate phenomena, exerting pivotal influence over global weather patterns and ecological systems. Despite scientific consensus on climate change impacts, including temperature shifts and acidification, a lack of data infrastructure hampers understanding marine ecosystems.This paper presents an adaptive control system for autonomous sailboats that aims to navigate efficiently in varied conditions by favoring the acquisition of oceanographic data. Combining reinforcement and imitation learning, the controller emulates human decision-making, enabling robust navigation. While showcasing promising results, challenges persist in adverse varied conditions. This challenge is exacerbated when confronting necessitating adaptive control mechanisms resilient to wear and tear.Simulators are vital for training due to the need for vast data volumes. Real-world data collection is costly and risky, while simulations accelerate learning. This study employs a simulator operating at ten times real-time speed, significantly simplifying scenario generation by adjusting factors such as sailboat position, orientation, target location, water current, and wind.Nevertheless, this novel approach signifies progress in addressing climate challenges and advancing oceanic research, using advanced computational methods
- Open Access
Enhancing Robotic Perception through Synchronized Simulation and Physical Common-Sense Reasoning
We introduce both conceptual and empirical findings arising from the amalgamation of a robotics cognitive architecture with an embedded physics simulator, aligning with the principles outlined in the intuitive physics literature. The employed robotic cognitive architecture, named CORTEX, leverages a highly efficient distributed working memory known as deep state representation. This working memory inherently encompasses a fundamental ontology, state persistency, geometric and logical relationships among elements, and tools for reading, updating, and reasoning about its contents. Our primary objective is to investigate the hypothesis that the integration of a physics simulator into the architecture streamlines the implementation of various functionalities that would otherwise necessitate extensive coding and debugging efforts. Furthermore, we categorize these enhanced functionalities into broad types based on the nature of the problems they address. These include addressing challenges related to occlusion, model-based perception, self-calibration, scene structural stability, and human activity interpretation. To demonstrate the outcomes of our experiments, we employ CoppeliaSim as the embedded simulator and both a Kinova Gen3 robotic arm and the Open-Manipulator-P as the real-world scenarios. Synchronization is maintained between the simulator and the stream of real events. Depending on the ongoing task, numerous queries are computed, and the results are projected into the working memory. Participating agents can then leverage this information to enhance overall performance.
Open AccessEnhancing Robotic Perception through Synchronized Simulation and Physical Common-Sense Reasoning
We introduce both conceptual and empirical findings arising from the amalgamation of a robotics cognitive architecture with an embedded physics simulator, aligning with the principles outlined in the intuitive physics literature. The employed robotic cognitive architecture, named CORTEX, leverages a highly efficient distributed working memory known as deep state representation. This working memory inherently encompasses a fundamental ontology, state persistency, geometric and logical relationships among elements, and tools for reading, updating, and reasoning about its contents. Our primary objective is to investigate the hypothesis that the integration of a physics simulator into the architecture streamlines the implementation of various functionalities that would otherwise necessitate extensive coding and debugging efforts. Furthermore, we categorize these enhanced functionalities into broad types based on the nature of the problems they address. These include addressing challenges related to occlusion, model-based perception, self-calibration, scene structural stability, and human activity interpretation. To demonstrate the outcomes of our experiments, we employ CoppeliaSim as the embedded simulator and both a Kinova Gen3 robotic arm and the Open-Manipulator-P as the real-world scenarios. Synchronization is maintained between the simulator and the stream of real events. Depending on the ongoing task, numerous queries are computed, and the results are projected into the working memory. Participating agents can then leverage this information to enhance overall performance.
- 7 September 2023
- Published by Springer Nature in Journal of Ambient Intelligence and Humanized Computing
- p. 1-10
Learning agriculture keypoint descriptors with triplet loss for visual SLAM
- 7 September 2023
- Published by Springer Nature in Journal of Ambient Intelligence and Humanized Computing
- p. 1-10
Learning agriculture keypoint descriptors with triplet loss for visual SLAM
- Open Access
- 6 September 2023
- Published by Association for Computing Machinery (ACM)
- p. 477-486
“It will surely fall”: Exploring Teachers’ Perspectives on Commercial Robots for Preschoolers
- 6 September 2023
- Published by Association for Computing Machinery (ACM)
- p. 477-486
Open Access“It will surely fall”: Exploring Teachers’ Perspectives on Commercial Robots for Preschoolers
- Open Access
- 19 June 2023
- Published by Association for Computing Machinery (ACM)
- p. 745-747
Programmable Floor Robot Robotito and its Tangible and Virtual Interface
Robotito is an omnidirectional robot designed and developed at Universidad de la República, Uruguay. It is part of a research line in educational robotics aimed at developing free software and open hardware robots for educational use. It was developed in 2018 and has been used in various research projects and educational activities since then. The demo aims to present the robot and its two programming interfaces (tangible and digital interface) to the IDC community to discuss its use in research and education, identify possible extensions and improvements, and encourage international collaborations.
- 19 June 2023
- Published by Association for Computing Machinery (ACM)
- p. 745-747
Open AccessProgrammable Floor Robot Robotito and its Tangible and Virtual Interface
Robotito is an omnidirectional robot designed and developed at Universidad de la República, Uruguay. It is part of a research line in educational robotics aimed at developing free software and open hardware robots for educational use. It was developed in 2018 and has been used in various research projects and educational activities since then. The demo aims to present the robot and its two programming interfaces (tangible and digital interface) to the IDC community to discuss its use in research and education, identify possible extensions and improvements, and encourage international collaborations.
- 12 October 2022
- Published by Springer Nature in Journal of Intelligent & Robotic Systems
- Vol. 106 (2) , 1-14
Active Localization Strategy for Hypotheses Pruning in Challenging Environments
- 12 October 2022
- Published by Springer Nature in Journal of Intelligent & Robotic Systems
- Vol. 106 (2) , 1-14
Active Localization Strategy for Hypotheses Pruning in Challenging Environments