| Optimization problems of replacement first or last in reliability theory X Zhao, T Nakagawa European journal of operational research 223 (1), 141-149, 2012 | 138 | 2012 |
| Age replacement models: A summary with new perspectives and methods X Zhao, KN Al-Khalifa, AM Hamouda, T Nakagawa Reliability Engineering & System Safety 161, 95-105, 2017 | 91 | 2017 |
| Optimal age replacement and inspection policies with random failure and replacement times T Nakagawa, X Zhao, WY Yun International Journal of Reliability, Quality and Safety Engineering 18 (05 …, 2011 | 58 | 2011 |
| Preventive replacement policies with time of operations, mission durations, minimal repairs and maintenance triggering approaches X Zhao, J Cai, S Mizutani, T Nakagawa Journal of Manufacturing Systems 61, 819-829, 2021 | 52 | 2021 |
| Optimization problems of a parallel system with a random number of units T Nakagawa, X Zhao IEEE Transactions on Reliability 61 (2), 543-548, 2012 | 50 | 2012 |
| Optimal policies for cumulative damage models with maintenance last and first X Zhao, C Qian, T Nakagawa Reliability Engineering & System Safety 110, 50-59, 2013 | 45 | 2013 |
| Maintenance overtime policies in reliability theory: models with random working cycles T Nakagawa, X Zhao Springer International Publishing, 2015 | 44 | 2015 |
| Which is better for replacement policies with continuous or discrete scheduled times? X Zhao, S Mizutani, T Nakagawa European Journal of Operational Research 242 (2), 477-486, 2015 | 39 | 2015 |
| Optimal imperfect preventive maintenance policies for a used system X Zhao, T Nakagawa, C Qian International Journal of Systems Science 43 (9), 1632-1641, 2012 | 39 | 2012 |
| Comparisons of replacement policies with periodic times and repair numbers X Zhao, C Qian, T Nakagawa Reliability Engineering & System Safety 168, 161-170, 2017 | 38 | 2017 |
| First and last triggering event approaches for replacement with minimal repairs X Zhao, KN Al-Khalifa, AM Hamouda, T Nakagawa IEEE Transactions on Reliability 65 (1), 197-207, 2015 | 37 | 2015 |
| Optimal replacement last with continuous and discrete policies X Zhao, T Nakagawa, MJ Zuo IEEE Transactions on Reliability 63 (4), 868-880, 2014 | 37 | 2014 |
| Periodic replacement policies with shortage and excess costs X Zhao, M Chen, T Nakagawa Annals of Operations Research, 1-19, 2022 | 34 | 2022 |
| Approximate methods for optimal replacement, maintenance, and inspection policies X Zhao, KN Al-Khalifa, T Nakagawa Reliability Engineering & System Safety 144, 68-73, 2015 | 31 | 2015 |
| Optimal periodic and random inspections with first, last and overtime policies X Zhao, T Nakagawa International Journal of Systems Science 46 (9), 1648-1660, 2015 | 29 | 2015 |
| Random number of units for K-out-of-n systems K Ito, X Zhao, T Nakagawa Applied Mathematical Modelling 45, 563-572, 2017 | 26 | 2017 |
| A revisit of age-based replacement models with exponential failure distributions X Zhao, B Li, S Mizutani, T Nakagawa IEEE Transactions on Reliability 71 (4), 1477-1487, 2021 | 24 | 2021 |
| Replacement policies with general models M Chen, X Zhao, T Nakagawa Annals of Operations Research 277, 47-61, 2019 | 24 | 2019 |
| Where does “whichever occurs first” hold for preventive maintenance modelings? X Zhao, HC Liu, T Nakagawa Reliability Engineering & System Safety 142, 203-211, 2015 | 23 | 2015 |
| Advanced maintenance policies for shock and damage models X Zhao, T Nakagawa Springer International Publishing, 2018 | 22 | 2018 |
