dr ahamadi

Ph.D:  Applied Probability and Statistics, City University London, 2011 Dissertation: Stochastic Modeling and Maintenance Optimization of Systems Subject to Deterioration

 Research Cluster: Systems and Modeling

M.S.C : Mathematical Statistics, Isfahan University, 2005 Dissertation: A Study on Repairable Systems

B.Sc :  Statistics, Isfahan University, 2003 Dissertation: A Study on the Proportional Hazard Model

 Assistant Perofessor

Ad Hoc Reviewing

• Computers and Industrial Engineering Journal

• IMA Journal of Management Mathematics

• Journal of Structure and Infrastructure Engineering

• Asia-Pacific Journal of Operational Research

• Journal of IEEE Transactions on Reliability

 • Journal of Reliability Engineering and System Safety

• International Journal of Quality & Reliability Management

 • Stochastic Modeling in Reliability

• Maintenance Optimization

• Inspection Planning

• Aging and Degradation Modeling

 A probabilistic model for maintaining and optimising the life-cycle performance of deteriorating structures R Ahmadi International journal of operational research 33 (2), 256 - 276 2018 
An optimal maintenance policy based on partial information R Ahmadi, S Wu CRC Press 2018 
An integrated approach to maintenance scheduling of multi-state production systems subject to deterioration R Ahmadi IMA Journal of Management Mathematics 30 (2), 235-264 2018
A novel data-driven approach to optimizing replacement policy R Ahmadi, S Wu Reliability Engineering & System Safety 167, 506-516 1 2017 
Maintenance planning for a deteriorating production process R Ahmadi, M Fouladirad Reliability Engineering & System Safety 159, 108-118 4 2017 
​An optimal replacement policy for complex multi-component systems R Ahmadi International Journal of Production Research 54 (17), 5303-5316

 R. Ahmadi, A Probabilistic Model for Maintaining and Optimizing the Life-Cycle Performance of Deteriorating Structures. To appear in Int. J. Operational Research, 2015 [21 pages].

 R. Ahmadi, Scheduling Preventive Maintenance for a Non-periodically Inspected Deteriorating system. Int. J. Rel. Qual. Saf. Eng., 2015; 22(6) [40 pages].

 R. Ahmadi, A New Approach to Modelling Condition-Based Maintenance for Stochastically Deteriorating Systems. Int. J. Rel. Qual. Saf. Eng., 2014;  21(5) [25 pages].

R. Ahmadi, Optimal Maintenance Scheduling for a Complex Manufacturing System Subject to Deterioration. Annals of Operations Research; 2014; 217(1): pp. 1-29.

5. R. Ahmadi and M.J. Newby, Maintenance Scheduling of a Manufacturing System Subject to Deterioration. Reliability Engineering and System Safety; 2011; 96(10): pp. 1411-1420.
 

 Papers in Refereed Conference Proceedings

1. R. Ahmadi, Maintenance Scheduling of a Manufacturing System Subject to Linear Deterioration Model. Proceedings of the 18th ISSAT International Conference on Reliability and Quality in Design; Boston, MA; United States; 26 July 2012 through 28 July 2012; Pages 355-363; ISBN: 978-097634868-9.

2. R. Ahmadi and M.J. Newby, An Optimal Preventive Maintenance Policy of a Deteriorating System Subject to a Bivariate State Process. Advances in Safety, Reliability and Risk Management. Taylor and Francis Group, London, 2011, 810-818, ISBN: 978-0-415-68379-1, DOI: 101201/b11433-115.

Chapters in Books

1. R. Ahmadi and M.J. Newby, A New Approach to Maintenance Optimization by Modelling Intensity Control. Mathematical and Statistical Models in Reliability, Statistics for Industry and Technology, Part 1, 69-85, DOI: 10.1007/978-0-8176-497-5_5, (2010). 
 

Invited Presentations (Seminars and Conferences)

1. R. Ahmadi, A Preventive Maintenance Model for Periodically Inspected Deteriorating systems. 1st National Seminar on Reliability Theory and Its Application. Isfahan University, Iran. May 27-28, 2015.

2. R. Ahmadi, A new approach to modelling condition-based maintenance for stochastically deteriorating systems. Accepted for presentation at INFORMS Applied Probability Society Conference 2013, Costa Rica.

3. R. Ahmadi and M.J. Newby, A Semi-Parametric Approach to Maintenance Optimization. 6th International Conference on Mathematical Methods in Reliability (MMR). The Russian State University of Oil and Gas, Moscow. Russia. June 22-26, 2009.

4. R. Ahmadi, Optimal Replacement Policy of Repairable Systems. 3rd Conference on Maintenance and Repair. Tehran, Iran. September 12-13, 2005.

5. R. Ahmadi, Repair and Maintenance Models of Systems Subject to Shock Processes. 5th Seminar on Probability and Stochastic Processes. Birjand University, Iran. August, 24-25, 2005.

6. R. Ahmadi, Regression Models with Proportional Hazards. 3rd Student Seminar on Probability and Statistics. Ferdosi University of Mashhad, Iran. August 19-21, 2004.