Theresa M. Stewart
Postdoctoral Scholar
Ph.D. UCLA, Materials Science and Engineering
B.S. Cal Poly San Luis Obispo, Materials Engineering
Dr. Theresa M. Stewart’s focus is on model-based systems engineering. Projects include risk assessment for nuclear energy facilities, and system reliability modeling for the JPL “Lunar Flashlight” satellite.
I am a Postdoctoral Scholar at the B. John Garrick Institute for the Risk Sciences and the Department of Materials Science and Engineering at University of California, Los Angeles. My research interests include 1) assessment of the risks and consequences of wildfires in California and their influences on ecological processes, 2) interpretation and preservation of environmentally induced geochemical signatures in natural samples, and 3) development of algorithms and computational models to depict natural processes.
I completed my BS (with highest honors) in Earth Science at the University of California, Santa Barbara in 2018 and my MS (2020) and my PhD (2023) in Geology at California Institute of Technology. My work involves 1) application and production of data-driven computational methods to calibrate and validate Earth system models, 2) development and implementation of laboratory techniques to make high precision geochemical measurements, and 3) field work to collect samples for future analysis and document observations in the natural world.
 |
Hara Prasad Nayak
Postdoctoral Scholar PhD, Indian Institute of Technology |
I am Hara Prasad Nayak, currently working as a postdoctoral scholar in the Department of Geography at the University of California, Los Angeles, USA. I hold a PhD in Atmospheric Science from the Indian Institute of Technology Kharagpur, India. My research interests include land-atmosphere interaction studies, land surface modeling, the Indian summer monsoon, the North American monsoon, mesoscale modeling, and global climate modelling etc.
 |
Doug Honegger
Research Scientist |
Mr. Honegger is a Research Scientist at the University of California, Los Angeles. He received a Master of Science degree from the University of Illinois in 1981 and has over 40 years of experience related to understanding the response of structures, structural components and equipment to extreme loading resulting from earthquake hazards, blast, and impact. His work has covered a wide range of applications in the defense, nuclear power, energy, and utility sectors. Since 1995, he has been in business as a sole proprietor operating as D.G. Honegger Consulting, specializing in assessing the response of buried pipelines to permanent ground displacement generated by a wide variety of natural geohazards and underground mining activities. His work experience encompasses site specific pipeline evaluations for new and existing pipeline installations as well as experimental research in field and laboratory settings. He participated in the preparation of the first comprehensive guideline for the seismic design of oil and gas pipeline systems in 1984 and has led the efforts to develop current industry guidelines for the design of natural gas and liquid hydrocarbon transmission pipelines for hazards related to earthquakes, landslides, and subsidence. Since 2015, he has been a guest lecturer for an introductory pipeline engineering course offered in the fall at the University of British Columbia, Canada.
Postdoctoral Scholar
Ph.D. Wuhan University of Technology
B.S. Wuhan University of Technology
Dr. Tingting Cheng holds a Ph.D. in Mechanical Engineering, specializing in human-system interaction safety and human reliability in autonomous systems. She has extensive experience on operational experiment of human-autonomy collaboration, and risk-based decision modeling for maritime transportation systems.
Dr. Cheng was formerly a visiting Ph.D. student at the Department of Marine Technology, Norwegian University of Science and Technology (NTNU), working on experiment of human performance in autonomous ships. Her current research is dedicated to advanced Human reliability analysis (HRA) methods and human-system interaction safety for digital control rooms and automated vehicles.
 |
Robb Moss
Research Scientist |
Robb has been a professor in the Civil and Environmental Engineering Department at California Polytechnic State University, San Luis Obispo, since 2005. He earned a Ph.D. from U.C. Berkeley in the field of geotechnical earthquake engineering, with minors in engineering seismology and structural reliability. His research and consulting focuses on the physics and probability of natural hazards such as; strong ground motions, seismic soil liquefaction, surface fault rupture, seismic induced landslides, debris flow, and others. His teaching includes undergraduate and graduate courses in; geotechnical engineering, engineering risk analysis, geological engineering, earthquake engineering, and others. He has been a member of ten earthquake reconnaissance teams traveling to Nepal, Japan, Chile, Alaska, Turkey, India, Mexico, and around California. Robb was appointed a Fulbright Scholar to Chile for 2017-2020 and is currently an editor for the ASCE Journal of Geotechnical and Geoenvironmental Engineering.
 |
Hoda Jafary
Research Scientist Ph.D. University of Massachusetts Dartmouth M.S. University of Massachusetts Dartmouth |
Dr. Hoda Jafary earned her M.Sc and Ph.D. in Electrical and Computer Engineering, specializing in System Reliability, from the University of Massachusetts Dartmouth. Her doctoral research centered on exploring how correlated component failure affects system reliability.
She possesses an extensive background in creating models to understand and enhance the performance of complex systems. Dr. Jafary's current research is dedicated to advancing system reliability, particularly through innovative methods in Human Reliability Analysis. Additionally, she explores the fascinating interplay between humans and systems.
 |
Meibai Li
Postdoctoral Scholar Ph.D. University of Texas at Austin M.S. University of Texas at Austin B.S. Hong Kong University of Science and Technology |
Meibai Li will join the B. John Garrick Institute for the Risk Sciences in January 2023 as a postdoctoral scholar. Her research interest focuses on the impact of site effect on the intensity of ground motions. She is currently working on the development ground motion models (GMMs) for probabilistic seismic hazard analysis of Western North America (WNA). She received her Ph.D. in geotechnical engineering at the University of Texas at Austin. During her Ph.D., she investigated site amplification in central and eastern North America (CENA).
 |
Jennifer Donahue
Research Scientist Ph.D. University of California, Berkeley B.S. Texas A&M UNiversity |
Dr. Donahue is the President/Owner of JL Donahue Engineering, based in California, with twenty-seven years of experience focused on managing and supporting a variety of civil geotechnical and seismic projects. Her seismic and geohazard engineering experience includes multiple probabilistic seismic hazard analyses and peer reviews; development of ground motion attenuation parameters; and geotechnical earthquake reconnaissance. Her geotechnical experience includes evaluation of liquefaction and settlement potential of sites; slope stability analysis; planning and implementation of field exploration programs; and peer review projects and feasibility studies for a variety of geotechnical projects. Dr. Donahue is a Research Scientist at the University of California, Los Angeles. She is an active member of the Geo-Engineering Extreme Events Reconnaissance (GEER) association for the National Science Foundation. Dr. Donahue recently retired as a member of the US Navy for 27 years, deploying most recently to Iraq and Afghanistan.
 |
Idil D. Akin
Visiting Research Scientist Ph.D. University of Wisconsin-Madison B.S. Middle East Technical University |
Dr. Idil Akin is an Assistant Professor in Civil and Environmental Engineering at Washington State University. She joined WSU in 2017, where she developed an active teaching and research program in unsaturated soil mechanics and biogeotechnics. Her primary research focus is on the fundamental mechanisms that control physicochemical, mechanical, and hydraulic soil behavior. Dr. Akin’s current research is in post-wildfire slope stability and bio-inspired and bio-mediated geotechnics. Her research has been sponsored by NSF, DOTs, and industry. She is a recipient of the 2021 NSF CAREER Award.
 |
Mahdi Bahrampouri
Postdoctoral Scholar Ph.D. Virginia Tech M.S. Virginia Tech B.A. Sharif University of Technology |
Dr. Mahdi Bahrampouri joined the Institute in July 2021 as a Postdoctoral Scholar. His research focuses on developing Ground Motion Models for advanced structural parameters, and improving the estimation of epistemic uncertainty in predicting ground motion intensity. Before joining UCLA, he studied Site Response Analysis and Uncertainty Quantification at Virginia Tech.
 |
Wadie Chalgham
Research Scientist Ph.D. University of California, Los Angeles M.S. University of California, Los Angeles M.S. University of Louisiana B.S. University of Louisiana |
Dr. Wadie Chalgham is a Research Scientist at the University of California, Los Angeles (UCLA). He is conducting research at UCLA’s B. John Garrick Institute for the Risk Sciences where he is the lead developer of the Pipeline Health Monitoring and Management project where the predictive physics of failure and system-level pipeline health monitoring and assessment models will be implemented.
Dr. Chalgham obtained his B.S. and his M.S. in Petroleum Engineering with a 4.0 GPA in both degrees. In addition, he has another M.S. and a Ph.D. in Mechanical and Aerospace Engineering with a specialization in Design, Robotics, and Manufacturing from UCLA.
Moreover, he was featured in “Top 10 Professors at UCLA” when he was teaching in the department of French and Francophone Studies at UCLA.
Furthermore, he holds 4 patents and recently published a US patent about a device and method for detecting leaks and healing pipelines.
Dr. Chalgham’s work has gained other recognitions, including winning the Audience Choice Award at UCLA's 2020 prestigious Grad Slam competition on March 5th at the California Nano-Systems Institute (CNSI). Grad Slam is a UC- wide competition that showcases and awards the best research presentations by graduate students from all departments. His presentation was on “Smart Pipeline Leak Detection and Response System.”
Also, he is the Best Paper Competition winner of the 2020 ASME SERAD (Safety Engineering, Risk and Reliability Analysis Division) Student Safety Innovation Challenge Contest for the paper: ``Sensor Placement Optimization based on Dynamic Bayesian Network Corrosion Prediction Model.” The paper offers a novel approach for identifying optimal sensor network layout to help oil and gas pipeline operators make risk-informed decisions to enhance pipeline system integrity management through optimal mitigation actions.
His research publications can be found here.
 |
Tarannom Parhizkar
Research Scientist Ph.D. Sharif University of Technology M.S. Sharif University of Technology B.S. K.N. Toosi University of Technology |
Dr. Parhizkar’s specialties are modeling, prognostic health monitoring, and operation optimization of complex systems. She was formerly a Postdoctoral fellow at the Department of Marine Technology, Norwegian University of Science and Technology (NTNU), working on dynamic probabilistic risk assessment and risk-based decision support tools for complex systems. She received her Ph.D. and M.S. in Energy Systems Engineering from Sharif University of Technology. In her Ph.D. work she focused on optimizing machine learning methods to model complex energy systems.
 |
Danielle M. Verdugo Madugo
Visiting Assistant Project Scientist B.S. San Diego State University |
Danielle joined the Institute in June 2019 as a Visiting Assistant Project Scientist and is currently working with Prof. Bozorgnia to develop a comprehensive empirical database of surface ruptures for probabilistic earthquake fault displacement hazard analyses. She did undergraduate and graduate work in Geology at San Diego State University and has over 15 years of combined research and consulting experience characterizing the earthquake potential of active faults.
 |
Silvia Mazzoni
Project Scientist Ph.D. University of California, Berkeley B.S. University of California, San Diego |
Dr. Mazzoni joined the Garrick Institute in June 2018 as a Project Scientist. She is currently working on several projects in Earthquake Engineering, where she contributes her expertise in data management, structural engineering, numerical simulation and ground-motion management.
 |
Nicolas Kuehn
Research Scientist Ph.D. University of Potsdam |
Nicolas Kuehn joined the Garrick Institute in August 2018 as a Project Scientist. His work is about the development of empirical ground-motion models for seismic hazard analysis, with a focus on subduction events and nonergodic models. He also works on new models for fault displacement hazard. He studied Geophysics at the University of Potsdam in Germany, where he received his PhD in seismology. He then spent a few years as a postdoc and project scientist at the University of California, Berkeley.
 |
Alexandra Sarmiento
Visiting Assistant Project Scientist M.S. University of Nevada, Reno B.S. University of Nevada, Reno |
Alexandra joined the Garrick Institute in June 2018 as a Visiting Assistant Project Scientist and is currently developing a comprehensive empirical database of surface ruptures for probabilistic earthquake fault displacement hazard analyses. She received a M.Sc. in Geology and B.S. in Geological Engineering from the University of Nevada, Reno and is registered in California as a Professional Engineer and Certified Engineering Geologist.
