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445 results on '"Lopez, Gerardo"'

3. From Commitment to Action

Author

Agrawal, Tanushree, Cui, Anja-Xiaoxing, Lense, Miriam D, Lopez, Gerardo, Owusu, Bre-Anna K, Schachner, Adena, Slevc, L Robert, Swaminathan, Swathi, and Vuvan, Dominique T

Subjects
Creative Arts and Writing, Cognitive and Computational Psychology, Social and Personality Psychology, Music, Psychology, Cognitive Sciences, Performing Arts and Creative Writing, Experimental Psychology, Cognitive and computational psychology, Social and personality psychology
Published
2024

6. Analysis Developed from an Extremely Complex System of the Human Shoulder Based on Finite Element Method (FEM)

Author

de la Luz Suarez-Hernandez, Maria, Urriolagoitia-Sosa, Guillermo, Romero-Ángeles, Beatriz, Estrada-Salazar, Karla Maria, Guereca-Ibarra, Jonathan Rodolfo, Gomez-Niebla, Jorge Alberto, Carbajal-López, Alfredo, Santiago-Lopez, Gerardo Esteban, Urriolagoitia-Calderón, Guillermo Manuel, Öchsner, Andreas, Series Editor, da Silva, Lucas F. M., Series Editor, and Altenbach, Holm, Series Editor

Published
2024
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14. Investigation of HOTAIR rs12826786, rs920778 and rs4759314 Variants With Breast Cancer Susceptibility and Clinicopathological Characteristics in a Mexican Population

Author

Rosales-Reynoso, Mónica Alejandra, Juárez-Vázquez, Clara Ibet, García-Sánchez, Isabel Nohemí, Palacios-Ramírez, Alejandra, Godínez-Rodríguez, Miriam Yadira, Tovar-Jácome, César de Jesús, Tapia-Leyva, Claudia Azucena, Robledo-López, Gerardo Emmanuel, García-Ortiz, José Elías, Salas-González, Efraín, Alcaraz-Wong, Aldo Antonio, and Gallegos-Arreola, Martha Patricia

Published
2024
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16. Simultaneous Contact, Gait and Motion Planning for Robust Multi-Legged Locomotion via Mixed-Integer Convex Optimization

Author

Aceituno-Cabezas, Bernardo, Mastalli, Carlos, Dai, Hongkai, Focchi, Michele, Radulescu, Andreea, Caldwell, Darwin G., Cappelletto, Jose, Grieco, Juan C., Fernandez-Lopez, Gerardo, and Semini, Claudio

Subjects
Computer Science - Robotics, Computer Science - Artificial Intelligence, Computer Science - Systems and Control
Abstract

Traditional motion planning approaches for multi-legged locomotion divide the problem into several stages, such as contact search and trajectory generation. However, reasoning about contacts and motions simultaneously is crucial for the generation of complex whole-body behaviors. Currently, coupling theses problems has required either the assumption of a fixed gait sequence and flat terrain condition, or non-convex optimization with intractable computation time. In this paper, we propose a mixed-integer convex formulation to plan simultaneously contact locations, gait transitions and motion, in a computationally efficient fashion. In contrast to previous works, our approach is not limited to flat terrain nor to a pre-specified gait sequence. Instead, we incorporate the friction cone stability margin, approximate the robot's torque limits, and plan the gait using mixed-integer convex constraints. We experimentally validated our approach on the HyQ robot by traversing different challenging terrains, where non-convexity and flat terrain assumptions might lead to sub-optimal or unstable plans. Our method increases the motion generality while keeping a low computation time., Comment: 8 pages, IEEE Robotics and Automation Letters

Published
2019
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18. Chronic Comorbidities in Middle Aged Patients Contribute to Ineffective Emergency Hematopoiesis in Covid-19 Fatal Outcomes

Author

Romo-Rodríguez, Rubí, Gutiérrez-de Anda, Karla, López-Blanco, Jebea A, Zamora-Herrera, Gabriela, Cortés-Hernández, Paulina, Santos-López, Gerardo, Márquez-Domínguez, Luis, Vilchis-Ordoñez, Armando, Ramírez-Ramírez, Dalia, Balandrán, Juan Carlos, Parra-Ortega, Israel, Resendis-Antonio, Osbaldo, Domínguez-Ramírez, Lenin, López-Macías, Constantino, Bonifaz, Laura C., Arriaga-Pizano, Lourdes A., Cérbulo-Vázquez, Arturo, Ferat-Osorio, Eduardo, Chavez-González, Antonieta, Treviño, Samuel, Brambila, Eduardo, Ramos-Sánchez, Miguel Ángel, Toledo-Tapia, Ricardo, Domínguez, Fabiola, Bayrán-Flores, Jorge, Cruz-Oseguera, Alejandro, Reyes-Leyva, Julio Roberto, Méndez-Martínez, Socorro, Ayón-Aguilar, Jorge, Treviño-García, Aurora, Monjaraz, Eduardo, and Pelayo, Rosana

Published
2023
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22. A Generalized Mixed-Integer Convex Program for Multilegged Footstep Planning on Uneven Terrain

Author

Aceituno-Cabezas, Bernardo, Cappelletto, Jose, Grieco, Juan C., and Fernandez-Lopez, Gerardo

Subjects
Computer Science - Robotics
Abstract

Robot footstep planning strategies can be divided in two main approaches: discrete searches and continuous optimizations. While discrete searches have been broadly applied, continuous optimizations approaches have been restricted for humanoid platforms. This article introduces a generalized continuous-optimization approach for multilegged footstep planning which can be adapted to different platforms, regardless the number and geometry of legs. This approach leverages Mixed-Integer Convex Programming to account for the non-convex constraints that represent footstep rotation and obstacle avoidance. The planning problem is formulated as an optimization problem which considers robot geometry and reachability with linear constraints, and can be efficiently solved using optimization software. To demonstrate the functionality and adaptability of the planner, a set of tests are performed on a BH3R hexapod and a LittleDog quadruped on scenarios which can't be easily handled with discrete searches, such tests are solved efficiently in fractions of a second. This work represents, to the knowledge of the authors, the first successful implementation of a continuous optimization-based multilegged footstep planner., Comment: Submitted to a Journal

Published
2016

25. Joint Instance Segmentation of Obstacles and Lanes Using Convolutional Neural Networks

Author

Cabrera Lo Bianco, Leonardo, Al-Kaff, Abdulla, Beltrán, Jorge, García Fernández, Fernando, Fernández López, Gerardo, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Silva, Manuel F., editor, Luís Lima, José, editor, Reis, Luís Paulo, editor, Sanfeliu, Alberto, editor, and Tardioli, Danilo, editor

Published
2020
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48. Bringing the Mountain to Mohammed: Parent Involvement in Migrant-Impacted Schools.

Author

Lopez, Gerardo R.

Abstract

Migrant students have a host of factors working against their chances of success in school. In the search for ways to counter these risk factors, educators have recognized the value of parent involvement. In addition to its effects on student learning and achievement, parent involvement also strengthens school accountability and gives historically marginalized communities a voice in school decision making. Little systematic research has focused specifically on best practices for involving migrant parents, and educators have had to rely on anecdotal evidence about creative approaches to involve this population. An ongoing research project focusing on successful Texas schools has found that effective initiatives in migrant parent involvement are not defined as a set of practices or activities for parents to do, but rather as a form of outreach. The schools in this study perceived themselves as active and proactive agents in reaching out to migrant parents and meeting their needs. Home visits and personal interactions between parents and school personnel made school personnel aware of the very basic survival needs of migrant families, which must be addressed as a first step in helping migrant students succeed. The schools also offered parent education that was an end in itself and improved migrant families' lives. In addition to removing logistical barriers to parents' attendance at school functions, the schools addressed social barriers by creating a more democratic and collaborative environment. (SV)

Published
2004

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