Personal profile
Research Interests
Integrated across education and engineering domains, the researcher advances mathematics education through a rigorous, criterion-driven selection of error-classification frameworks for first-year engineering students, demonstrating the Newman model as the most effective for diagnostic and formative purposes via Analytic Hierarchy Process (AHP). Complementing this, the portfolio further develops predictive maintenance and performance optimization in diesel and automotive contexts by applying multivariate statistics, change-point detection, and response surface methodologies to lubricant analysis, oil viscosity, and fuel quality. The work consistently demonstrates how data-driven methods—PCA, BS change-point detection, RSM, and high-altitude field testing—enhance maintenance timing, engine efficiency, and emission outcomes. A unifying impact is the translation of complex analyses into actionable guidelines for educational instrument design and sustainable, cost-efficient vehicle operation in challenging environments, highlighting evidence-based criteria, reliability-focused maintenance, and operational optimization as core contributions to both pedagogy and engineering practice.
Expertise related to UN Sustainable Development Goals
In 2015, UN member states agreed to 17 global Sustainable Development Goals (SDGs) to end poverty, protect the planet and ensure prosperity for all. This person’s work contributes towards the following SDG(s):
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SDG 11 Sustainable Cities and Communities
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Collaborations and top research areas from the last five years
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Multimodal fusion of dynamic signals and tribological analysis for remaining useful life estimation in spur gearboxes using an interpretable AI approach
Montero Salgado, J. P. (Col), Sanchez Loja, R. V. (Col), Calle Guamantario, W. P. (Col), Narvaez Villa, P. H. (PI), Perez Torres, J. A. (Col) & Garcia Tobar, M. O. (Col)
2/02/26 → …
Project: Research and Development
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Tribochemical Characterization of Used Oil as a Digital Fingerprint of Alternative Internal Combustion Engines for Identifying Failure Modes in the National Automotive Fleet through Advanced Physicochemical Analysis and Specialized Laboratory Tools
Garcia Garcia, C. L. (Col), Chica Segovia, J. F. (Col), Barros Fajardo, L. F. (Col), Garcia Tobar, M. O. (PI), Contreras Urgiles, R. W. (Col), Pulla Morocho, C. O. (Col), Cabrera Guale, D. E. (Student), Gallardo Gallardo, S. P. (Student) & Yanez Osorio, D. P. (Student)
28/10/25 → …
Project: Research and Development
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Development, Implementation, and Validation of a Guide to the Most Frequent Mathematical Errors Made by First-Cycle Engineering Students at UPS Cuenca Campus
Gonzalez Alvarez, N. X. (PI), Garcia Tobar, M. O. (Col) & Martinez Bustamante, M. D. R. (Col)
21/05/24 → …
Project: Research and Development
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Development of Intelligent and Sustainable Mobility Strategies and Social Acceptance of Autonomous Vehicles in the City of Cuenca, Employing Artificial Intelligence and Virtual Reality Techniques on Specialized Software and Hardware Platforms
Robles Bykbaev, V. E. (Col), Garcia Tobar, M. O. (Col), Ortiz Gonzalez, J. P. (Col), Valladolid Quitoisaca, J. D. (PI), Idrovo Berrezueta, P. S. (Student), Dutan Sanchez, D. A. (Student), Zhindon Minchala, B. D. (Student), Lazo Saguay, B. S. (Student), Sancho Dominguez, A. M. (Student), Riera Pelaez, C. S. (Student), Pazmiño Villavicencio, J. A. (Student), Puetate Gonzalez, I. F. (Student), Ochoa Zea, H. F. (Student), Gonzalez Jara, J. K. (Student), Castillo Garcia, F. S. (Col), Barreto Erazo, A. F. (Student) & Ochoa Criollo, C. X. (Student)
24/02/22 → 30/06/25
Project: Research and Development
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Evaluation of alternative systems for mobility in the city of Cuenca
Espinoza Molina, F. E. (Col), Vazquez Salazar, J. S. (PI), Mendez Torres, P. W. (Col), Garcia Tobar, M. O. (Col), Riera Arce, C. M. (Student), Ortega Rodas, J. A. (Student) & Timbe Ullauri, W. A. (Student)
28/01/21 → 2/12/23
Project: Research and Development
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An Integrated Methodological Approach for Interpreting Used Oil Analysis in Diesel Engines
Ramirez Camba, R., Garcia Garcia, C., Garcia Tobar, M. & Fajardo Merchan, J., Apr 2025, In: Lubricants. 13, 4, 169.Research output: Contribution to journal › Article › peer-review
Open Access2 Link opens in a new tab Scopus citations -
A Structured AHP-Based Approach for Effective Error Diagnosis in Mathematics: Selecting Classification Models in Engineering Education
Garcia Tobar, M., Gonzalez Alvarez, N. & Martinez Bustamante, M., Jul 2025, In: Education Sciences. 15, 7, 827.Research output: Contribution to journal › Article › peer-review
Open Access -
The Impact of Oil Viscosity and Fuel Quality on Internal Combustion Engine Performance and Emissions: An Experimental Approach
Garcia Tobar, M., Pinta Pesantez, K., Jimenez Romero, P. & Contreras Urgiles, R. W., Apr 2025, In: Lubricants. 13, 4, 188.Research output: Contribution to journal › Article › peer-review
Open Access6 Link opens in a new tab Scopus citations -
Impact of Oil Viscosity on Emissions and Fuel Efficiency at High Altitudes: A Response Surface Methodology Analysis
Garcia Tobar, M., Cabrera Ojeda, O. & Crespo Montaño, F., Aug 2024, In: Lubricants. 12, 8, 277.Research output: Contribution to journal › Article › peer-review
Open Access4 Link opens in a new tab Scopus citations -
Nanotechnology in Lubricants: A Systematic Review of the Use of Nanoparticles to Reduce the Friction Coefficient
Garcia Tobar, M., Contreras Urgiles, R. W., Jimenez Cordero, B. & Guillen Matute, J., May 2024, In: Lubricants. 12, 5, 166.Research output: Contribution to journal › Review article › peer-review
Open Access34 Link opens in a new tab Scopus citations
Press/Media
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Universidad Politecnica Salesiana Researcher Describes Findings in Lubricant Research (Impact of Oil Viscosity on Emissions and Fuel Efficiency at High Altitudes: A Response Surface Methodology Analysis)
15/08/24
1 item of Media coverage
Press/Media: Press / Media