Publications

For the full and most up-to-date list, see Google Scholar. Entries are organized for fast scanability and newest work appears first within each section.

Journal Articles

1. Khalid, Hammad; Bui, Ha; Al Rashdan, Ahmad; Boring, Ronald L; Mohaghegh, Zahra. "Automation Transparency: A Literature Review, Methodology Development, and Application to an AI-Driven Anomaly Detection System in Nuclear Power Plants." Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability, 2026.

2. Beal, John; Sakurahara, Tatsuya; Reihani, Seyed; Bui, Ha; Mohaghegh, Zahra. "Uncertainty-Based Validation of Maintenance-Physical Degradation Coupled Models in the Absence of Maintenance Performance Data: Application for Nuclear Power Plant Piping Reliability Analysis." ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering, 12(1), 11204, 2026. American Society of Mechanical Engineers.

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3. Beal, John; Fargusson, Spencer; Bui, Ha; Reihani, Seyed; Khalid, Hammad; Mohaghegh, Zahra. "Developing Temporal Coupling of Human Performance, Physical Twin, and Digital Twin Models for Probabilistic Risk Assessment in Nuclear Power Plants." Nuclear Engineering and Design, 447, 114620, 2026.

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4. Albati, Mohammad; Bui, Ha; Reihani, Seyed; Yadav, Vaibhav; Mandelli, Diego; Mohaghegh, Zahra. "Integrated Human Reliability Analysis Methodology for External Control Room Emergency Response Scenarios: Application to Modeling FLEX Human Actions in Nuclear Power Plants." ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering, 11(4), 41208, 2025. American Society of Mechanical Engineers.

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5. Bui, Ha; Sakurahara, Tatsuya; Reihani, Seyed; Kee, Ernie; Mohaghegh, Zahra. "Probabilistic Validation: Computational Platform and Application to Fire Probabilistic Risk Assessment of Nuclear Power Plants." ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering, 10(2), 21202, 2024. American Society of Mechanical Engineers.

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6. Bui, Ha; Sakurahara, Tatsuya; Reihani, Seyed; Kee, Ernie; Mohaghegh, Zahra. "Probabilistic Validation: Theoretical Foundation and Methodological Platform." ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering, 9(2), 21204, 2023. American Society of Mechanical Engineers.

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7. Bui, Ha; Sakurahara, Tatsuya; Reihani, Seyed; Kee, Ernie; Mohaghegh, Zahra. "Spatiotemporal Integration of An Agent-Based First Responder Performance Model with A Fire Hazard Propagation Model for Probabilistic Risk Assessment of Nuclear Power Plants." ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part B: Mechanical Engineering, 6(1), 11011, 2020. American Society of Mechanical Engineers.

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8. Bui, Ha; Sakurahara, Tatsuya; Pence, Justin; Reihani, Seyed; Kee, Ernie; Mohaghegh, Zahra. "An Algorithm for Enhancing Spatiotemporal Resolution of Probabilistic Risk Assessment to Address Emergent Safety Concerns in Nuclear Power Plants." Reliability Engineering & System Safety, 185, 405-428, 2019. Elsevier.

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Feature Articles

1. Joslin, George; Rowell, Arden; Bui, Ha; Valentino, Justin; Che, Ziwei; Reihani, Seyed; Mohaghegh, Zahra. "Nuclear power’s new rule book: Managing uncertainty in efficiency, safety, and independence." American Nuclear Society (ANS) Nuclear Newswire, 2025. American Nuclear Society (ANS).

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Technical Reports & Other Scholarly Contributions

1. Rowell, Arden; Mohaghegh, Zahra; Bui, Ha; Joslin, George. "Part 53—As Proposed, Part 53 Fails to Address Important Legal Changes to the NRC’s Authority." February 28, 2025. Comment on Nuclear Regulatory Commission, NPRM Risk-Informed, Technology-Inclusive Regulatory Framework for Advanced Reactors, 89 Fed. Reg. 86198 (Oct. 31, 2024).

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2. Mohaghegh, Zahra; Bui, Ha; Khalid, Hammad; Reihani, Seyed; Al Rashdan, Ahmad; Boring, Ronald. "Probabilistic Validation and Risk Importance Ranking Methodology for Automation Trustworthiness and Transparency in Nuclear Power Plants." Final Report for DOE Nuclear Energy University Programs (NEUP) project 21-24380, 2025.

   PDF available upon request.

3. Mohaghegh, Zahra; Bui, Ha; Sakurahara, Tatsuya; Albati, Mohammad; Alkhatib, Sari; Reihani, Seyed A; Kee, Ernie; Mandelli, Diego; Yadav, Vaibhav; Yilmaz, Fatma. "I-PRA Decision-Making Algorithm and Computational Platform to Develop Safe and Cost-Effective Strategies for the Deployment of New Technologies: Department of Energy (DOE) Nuclear Energy University Programs (NEUP) Project 19-16298 Final Report." 2023. US Department of Energy.

   Links: Scholar

   PDF available upon request.

4. Bui, Ha. "Enhancing Spatiotemporal Resolution in Probabilistic Risk Assessment of Nuclear Power Plants: Theoretical Foundations and Methodological Developments." 2022. University of Illinois at Urbana-Champaign.

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   PDF available upon request.

5. Biersdorf, John M; Bui, Ha; Sakurahara, Tatsuya; Reihani, Seyed; LaFleur, Chris; Luxat, David L; Prescott, Steven R; Mohaghegh, Zahra. "Risk Importance Ranking of Fire Data Parameters to Enhance Fire PRA Model Realism." 2020. Idaho National Laboratory (INL), Idaho Falls, ID (United States).

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Conference Papers / Proceedings

1. Joslin, George; Rowell, Arden; Bui, Ha; Reihani, Seyed; Mohaghegh, Zahra. "Understanding Uncertainties in the Regulation of Advanced Nuclear Power Reactors: Legal and Technological Revolutions." 19th International Topical Meeting on Probabilistic Safety Assessment and Analysis (PSA), 2025.

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   PDF available upon request.

2. Albati, Mohammad; Ahmed, Md Istiaque; Bui, Ha; Reihani, Seyed; Mohaghegh, Zahra. "Simulation-Informed Dependency Treatment to Enhance Operational Flexibility, Avoid Production Loss, and Maintain Safety of Operating Plants and Advanced Reactors." 19th International Topical Meeting on Probabilistic Safety Assessment and Analysis (PSA), 2025.

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   PDF available upon request.

3. Khalid, Hammad; Beal, John; Bui, Ha; Reihani, Seyed; Mohaghegh, Zahra. "Interactions of Human Performance, Physical Failure Mechanisms, and Organizational Factors in Socio-Technical Risk Analysis of Complex Technological Systems." 19th International Topical Meeting on Probabilistic Safety Assessment and Analysis (PSA), 2025.

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   PDF available upon request.

4. Khalid, Hammad; Bui, Ha; Rashdan, Ahmad Al; Reihani, Seyed; Mohaghegh, Zahra. "Automation Trustworthiness and Transparency in Nuclear Power Plants: Definitions, Methodologies, and Case Studies." 19th International Topical Meeting on Probabilistic Safety Assessment and Analysis (PSA), 2025.

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   Access URL not available in source CSV. PDF available upon request.

5. Bui, Ha; Khalid, Hammad; Sakurahara, Tatsuya; Reihani, Seyed A; Mohaghegh, Zahra. "Probabilistic Validation Methodology for Probabilistic Risk Assessment: Overview, Status, and Future Research Directions." Probabilistic Safety Assessment and Management & Asian Symposium on Risk Assessment and Management (PSAM 17 & ASRAM2024), 2024.

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6. Khalid, Muhammad Hammad; Bui, Ha; Al Rashdan, Ahmad; Mohaghegh, Zahra. "On the Definitions of Automation Trustworthiness and Automation Transparency in Nuclear Power Domain." Transactions of the American Nuclear Society, 131(1), 88-91, 2024. American Nuclear Society.

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7. Albati, Mohammad; Bui, Ha; Reihani, Seyed A; Mohaghegh, Zahra. "Integrated Human Reliability Analysis (I-HRA) Methodology for External Control Room Scenarios at Nuclear Power Plants." Probabilistic Safety Assessment and Management & Asian Symposium on Risk Assessment and Management (PSAM 17 & ASRAM2024), 2024.

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8. Fargusson, Spencer; Fisher, Riley; Farshadmanesh, Pegah; Bui, Ha; Mohaghegh, Zahra. "Theoretical Foundation of Modeling Human-Digital Twin Interactions and Their Impacts on Safety Risk in Nuclear Power Plants." Proceedings of the IAPSAM Topical Conference on Artificial Intelligence and Risk Analysis for Probabilistic Safety/Security Assessment & Management, 2023.

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9. Fisher, Riley; Sakurahara, Tatsuya; Bui, Ha; Afzali, Ami; Rowell, Arden; Mohaghegh, Zahra. "Risk-informed Performance-based Regulation for Advanced Nuclear Power Reactors: Role of Artificial Intelligence as an Enabling Technology." Proceedings of the IAPSAM Topical Conference on Artificial Intelligence and Risk Analysis for Probabilistic Safety/Security Assessment & Management, 2023.

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10. Fisher, Riley; Fargusson, Spencer; Mitstifer, Jake; Beal, John; Bui, Ha; Farshadmanesh, Pegah; Sakurahara, Tatsuya; Reihani, Seyed; Kee, Ernie; Mohaghegh, Zahra. "On Modeling Human-Digital Twin Interactions and their Safety Risk Impact in Nuclear Power Plants." Probabilistic Safety Assessment and Management (PSAM) International Topical Meeting on Artificial Intelligence (AI) and Risk Analysis, 2023.

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11. Kee, Ernie; Bui, Ha; Farshadmanesh, Pegah; Mohaghegh, Zahra. "Integrating Artificial Intelligence in Earthquake Arrival Process for Enhanced Seismic Probabilistic Risk Assessment." Proceedings of the IAPSAM Topical Conference on Artificial Intelligence and Risk Analysis for Probabilistic Safety/Security Assessment & Management, 2023.

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12. Morasca, Madeline; Fargusson, Spencer; Scott, Ben; Bui, Ha; Farshadmanesh, Pegah; Mohaghegh, Zahra. "Integrated Modeling of Human Interactions with Hardware and Software in Digital Twins to Support Risk-Informed Regulation for Existing Plants and Advanced Reactors: Preliminary Results of Literature Review." American Nuclear Society (ANS) 2023 Student Conference, 2023.

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    PDF available upon request.

13. Khalid, Muhammad Hammad; Ahmed, Md Istiaque; Roy, Samrendra; Bui, Ha; Reihani, Seyed; Rashdan, Ahmad Al; Mohaghegh, Zahra. "Evaluation of Automation Trustworthiness in Nuclear Power Plants: A Risk-Informed Approach using Probabilistic Validation and Integrated Probabilistic Risk Assessment." Proceedings of the IAPSAM Topical Conference on Artificial Intelligence and Risk Analysis for Probabilistic Safety/Security Assessment & Management, 2023.

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14. Fisher, Riley; Kee, Ernest; Johnson, David; Bui, Ha; Mohaghegh, Zahra. "Engineering & Environmental Justice: Protections, Hazards, and Technological Systems." ASME International Mechanical Engineering Congress and Exposition, 87707, V013T15A002, 2023. American Society of Mechanical Engineers.

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15. Khalid, Muhammad Hammad; Bui, Ha; Farshadmanesh, Pegah; Al Rashdan, Ahmad; Mohaghegh, Zahra. "Automation Trustworthiness in Nuclear Power Plants: A Literature Review." Proceedings of the IAPSAM Topical Conference on Artificial Intelligence and Risk Analysis for Probabilistic Safety/Security Assessment & Management, 2023.

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16. Bui, Ha; Sakurahara, Tatsuya; Reihani, Seyed A; Kee, Ernie; Mohaghegh, Zahra. "Probabilistic Validation Methodology for Probabilistic Risk Assessment." 16th Probabilistic Safety Assessment & Management Conference (PSAM 16), 2022.

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    PDF available upon request.

17. Bui, Ha; Sakurahara, Tatsuya; Reihani, Seyed; Biersdorf, John; Mohaghegh, Zahra. "I-PRA Uncertainty Importance Ranking to Enhance Fire PRA Realism for Nuclear Power Plants." Transactions of the American Nuclear Society, 123(1), 967-970, 2020.

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    PDF available upon request.

18. Sakurahara, Tatsuya; Bui, Ha; Reihani, Seyed; Kee, Ernie; Mohaghegh, Zahra. "Enhancing Realism in Fire Probabilistic Risk Assessment of Nuclear Power Plants." 30th European Safety and Reliability Conference, ESREL 2020 and 15th Probabilistic Safety Assessment and Management Conference, PSAM 2020, 1836-1843, 2020. Research Publishing Services.

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19. Bui, Ha; Sakurahara, Tatsuya; Reihani, Seyed; Biersdorf, John; Mohaghegh, Zahra. "Integrated Probabilistic Risk Assessment (I-PRA) Importance Ranking for Fire PRA of Nuclear Power Plants." Transactions of the American Nuclear Society, 121, 997-1003, 2019.

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    PDF available upon request.

20. Bui, Ha; Pence, Justin; Mohaghegh, Zahra; Reihani, Seyed; Kee, Ernie. "Spatio-temporal Socio-technical Risk Analysis Methodology: An Application in Emergency Response." Proceedings of the International Topical Meeting on Probabilistic Safety Assessment and Analysis (PSA 2017), 2017.

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21. Sakurahara, Tatsuya; Bui, Ha; Pence, Justin; Cheng, Wen-Chi; Mohaghegh, Zahra; Kee, Ernie; Reihani, Seyed; Wortman, Martin; Moiseytseva, Vera; Yilmaz, Fatma. "Protective Systems: Possible Extensions to the RoverD Method." Proc. Int. Topl. Mtg. Probabilistic Safety Assessment and Analysis (PSA 2017), 24-28, 2017.

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22. Bui, Ha; Sakurahara, Tatsuya; Pence, Justin; Gu, Zi Hui; Mohaghegh, Zahra; Reihani, Seyed; Wortman, Martin; Kee, Ernie; Moiseytseva, Vera; Johnson, David. "Protective Systems: Definitions and Terms in the Regulated Risk Assessment Setting." 2017 International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2017, 1101-1110, 2017. American Nuclear Society.

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    PDF available upon request.

23. Bui, Ha; Sakurahara, Tatsuya; Cheng, Wen Chi; Crook, Timothy; Vaghetto, Rodolfo; Wortman, Martin; Mohaghegh, Zahra; Reihani, Seyed; Kee, Ernie; Munoz, Dominic. "Protective Systems: An Application of Regulatory Guidance for ECCS Sump Performance." 2017 International Topical Meeting on Probabilistic Safety Assessment and Analysis, PSA 2017, 693-702, 2017. American Nuclear Society.

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24. Bui, Ha; Pence, Justin; Mohaghegh, Zahra; Kee, Ernie. "Spatio-temporal Socio-technical Risk Analysis Methodology for Emergency Response." 13th International Conference on Probabilistic Safety Assessment and Management (PSAM 13), 2016.

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25. Anuar, Nuraslinda; Kamanja, Florah; Mtoko, Noloyiso; Ramli, Nurhayati; Ohaga, Eric; Ha, Bui; Dongyoung, Kim; Susanto, Arifin M; Zolkaffly, Zulfakar; Hyejin, Kim. "Functional Requirement Analysis and Function Allocation for APR 1400." Transactions of the Korean Nuclear Society Spring Meeting (Gyeongju, Korea), 2013.

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26. Ha, Bui; Oh, Seung Jong; Oh, Ji Yong. "Examination of the Emergency Planning Zone (EPZ) Using Level 3 PSA Approach with MACCS2." Korean Nuclear Society (Autumn Meeting), 2013.

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27. Ha, Bui; Khanh, Tran; Kahar, Wan Shakirah Wan Abdul; Jung, Jae-Cheon. "Modeling of the Nuclear Power Plant Life-cycle for “Big Data” Management System: A Systems Engineering Viewpoint." Transactions of the Korean Nuclear Society Autumn Meeting (Gyeongju, Korea), 2012.

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Invited Talks/Lectures

1. Invited Talk, “Risk-Informed Safety and Security Analysis for Advanced Nuclear Reactors,” Virtual Workshop: INMM Risk-Informed Physical and Cyber Security, June 3–5, 2025.

2. Invited Lecture, “Enhancing Economic Viability while Maintaining Safety of Nuclear Power Plants,” NPRE 199 Undergraduate Seminar Series, Department of Nuclear, Plasma, and Radiological Engineering, University of Illinois Urbana-Champaign, March 4, 2025.

3. Invited Lecture, “Risk-Informed Performance-Based Analysis and Regulation,” Nuclear Education, Skills, and Technology (NEST) Small Modular Reactor (SMR) Project workshop of the Organisation for Economic Co-operation and Development Nuclear Energy Agency (OECD-NEA), McMaster University, Ontario, Canada, 2024.

4. Invited Talk, “Enhancing Spatiotemporal Resolutions for Probabilistic Risk Assessment of Nuclear Power Plants,” International Workshop on Dynamic Probabilistic Safety Assessment and its Role in Risk-Informed Decision-Making, organized by the Working Group on Risk Assessment (WGRISK) of the Nuclear Energy Agency (NEA) Committee on the Safety of Nuclear Installations (CSNI), hosted by the U.S. Nuclear Regulatory Commission, 2023.

5. Invited Lecture, “A Discourse on Regulatory Approaches for Deployment of Advanced Reactors,” Nuclear Education, Skills, and Technology (NEST) Small Modular Reactor (SMR) Project workshop of the Organisation for Economic Co-operation and Development Nuclear Energy Agency (OECD-NEA), Idaho National Laboratory, 2023.

6. Invited Lecture, “Modeling, Simulation & Validation in Risk-Informed Analysis of Existing Plants & Advanced Reactors,” Modeling, Experiment, and Validation (MeV) Summer School, Idaho National Laboratory, 2023.

7. Invited Lecture, “A Discourse on Regulatory Approaches for Deployment of Advanced Reactors,” Nuclear Education, Skills, and Technology (NEST) Small Modular Reactor (SMR) Project workshop of the Organisation for Economic Co-operation and Development Nuclear Energy Agency (OECD-NEA), Idaho National Laboratory, 2022.

8. Invited Presentation, “Risk Importance Ranking of Fire Data Parameters to Enhance Fire PRA Model Realism,” Idaho National Laboratory, RISA (Risk-Informed Systems Analysis) Virtual Stakeholders Meeting, 2020.

Under Review / In Preparation

Coming soon.