Jordan University of Science and Technology

Mahmoud Alrefaei's Home Page 

                                        Associate Professor
                                         Department of  Mathematics and Statistics, Chair
                                         Jordan University of Science and Technology

                                        P.O. Box 3030, Irbid, JORDAN

                                        (tel) +962-2-720 1000 Ext. 23500

                                        (Fax) 962-2-709 5014

                                            e-mail: alrefaei@just.edu.jo

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EDUCATION:

·         PhD: Mathematics and Industrial Engineering/ Specialty in Operations Research, Subspecialty in Discrete Stochastic Optimization using Simulation.
University of Wisconsin-Madison, Madison, Wisconsin, USA. August 1997.

PhD thesis: Discrete Stochastic Optimization Using Random Search

PhD supervisor: Prof. Sigrun Andradottir (Georgia Institute of Technology)

·         M.A. in Mathematics
University of Wisconsin-Madison, Madison, Wisconsin, USA. June 1997.

·         M.Sc. in Mathematics
Yarmouk University, Irbid, Jordan. August 1985.

·         B.Sc. in Mathematics
Yarmouk University, Irbid, Jordan. August 1983.

Current Research Interest:

My research interests include Stochastic Optimization, Simulated Annealing, Discrete Event Simulation, Statistical Selection Techniques, Ordinal Optimization, and Simulating Manufacturing Systems. 

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Publications:

1. Alrefaei, M. H. and S. Andradóttir. "A new search algorithm for discrete stochastic optimization." In Proceedings of the 1995 Winter Simulation Conference, eds. C. Alexopoulos, K. Kang, W. R. Lilegdon, and D. Goldsman.
2. Alrefaei, M. H. and S. Andradóttir. "Discrete stochastic optimization via a modification of the stochastic ruler method." In the Proceedings of the 1996 Winter Simulation Conference. 
3. Alrefaei, M. H. and S. Andradóttir. "Accelerating the convergence of the stochastic ruler method for discrete stochastic optimization." In the Proceedings of the 1997 Winter Simulation Conference., 1997. 
4. Alrefaei, M. H. and S. Andradóttir. "A simulated annealing algorithm with constant temperature for discrete stochastic optimization."  Management Science, 45: 748--764, 1999.
5. Alrefaei, M. H. and S. Andradóttir. "A modification of the stochastic ruler method for discrete stochastic optimization". European Journal of Operational Research.  133: 160--182
6. Alrefaei, M. H. A Method for optimizing admission control of a Vvice Mmltihop radio network. Proceedings of the 4th St. Petersburg Workshop on Simulation, ed. S. M. Ermakov, Yu. N. Kashtanov, and V. B. Melas.   2001
7. Alrefaei, M. H. A two-phase method for selecting the best-simulated system. In The Proceedings of the 2001 International Arab Conference on Information Technology ACIT 2001, ed. Ahmad Dalal'ah. Jordan University of Science and Technology, Irbid, Jordan. 2001.

8. Alrefaei, M. H.  Stochastic optimization using the standard clock simulation. International Journal of Applied Mathematics 8: 317-333. 2002.

9. Alrefaei, M. H.  A Technique for Simulation Optimization.  Proceeding of the Fourth Middle East Symposium on Simulation and Modeling (MESM) Sharjah, UAE. 2002. 

10.  Alrefaei, M. H. 2003. A stopping Rule for Stochastic Simulated Annealing with Constant Temperature. WSEAS Transactions on Circuits and Systems. 2: 517-522.

11.   Alrefaei, M. H. and A. J. Alawneh. 2004.  Selecting the Best Stochastic System for Large Scale Problems in DEDS. Mathematics and Computers in Simulations. 64: 237-245. 

12.  Alrefaei, M. H. and Hossam Abdul-Rahman, Two Sequential Algorithms for Selecting one of the Best Simulated Systems. WSEAS Transactions on Systems. 3: 2517-2522, 2004.

13.      Alrefaei, M. H., A Simulated Annealing Applied for Optimizing a Voice Multihop Radio Network. Applied Mathematics and Computation. In press. 2004.

14.        Alrefaei, M. H., and S. Andradóttir. Discrete stochastic optimization using variants of the stochastic ruler method. Naval Research Logistics, to appear 52: 344-360, 2005.

15. Alrefaei, M. H. and A. J. Alawneh.  Solution quality of random search methods for discrete stochastic optimization. Mathematics and Computers in Simulations, 68: 115–125. 2005.

16.  Alrefaei, M. H. and Mohammad AlMomani. Subset selection of best simulated systems, Accepted in a Special issue of the Journal of Franklin Institute 2005.

17. Alrefaei, M. H., and Mohammad Al-Momani. A Three Stage Statistical Procedure for selecting a good enough simulated system. Accepted at the International Journal of Pure and Applied Mathematics. 2005

Working Papers:

18. Alrefaei, M. H., and Hossam Abdul-Rahman. An adaptive Monte Carlo integration algorithm with general division approach. Working Paper.

19. Alrefaei, M. H., and Hossam Abdul-Rahman. A corrector approach for the Adaptive Monte Carlo methods. Working Paper.

     

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Organizing Conferences:

• Director of the Summer School of Mathematical Modeling for Financial Markets. Jordan University of Scienc and Technology, September 11 – 22, 2005.
• Member of the organizing committee of the Summer School: Partial Differential Equations Arising From Geometry. Damascus University, May 15 – 27 2004.
• Member of the organizing committee of the Seventh Scientific day of the Faculty of Science and Arts, May 2004
• A member of the 4th WSEAS Int.Conf. on Simulation, Modelling, and Optimization (ICOSMO2004)  Izmir, Turkey 13 – 16, 2004.
• Chair of the Sixth Scientific day of the Faculty of Science and Arts, May 23 – 24, 2003.
• Chair of The Math Section in the fifth scientific day of the Faculty of Science and Arts, May 2002.

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Contributions to Conferences:

• Alrefaei, M. H. and S. Andradóttir. "A new search algorithm for discrete stochastic optimization." 1995 Winter Simulation Conference, Washington D.C., USA.
• Alrefaei, M. H. and S. Andradóttir. "Discrete stochastic optimization via a modification of the stochastic ruler method." 1996 Winter Simulation Conference.  San Diego, USA. 1996.
• Alrefaei, M. H. and S. Andradóttir. "Accelerating the convergence of the stochastic ruler method for discrete stochastic optimization." 1997 Winter Simulation Conference.

• Alrefaei, M. H. and S. Andradóttir. An approach for accelerating the convergence of discrete stochastic optimization procedures." INFORMS Fall 1995 National Conference in New Orleans.

• Alrefaei, M. H. and S. Andradóttir. A simulated annealing algorithm with constant temperature for discrete stochastic optimization." INFORMS Fall 1996 National Conference in Atlanta.

• Alrefaei, M. H.  Finding an optimal solution under uncertainty. The Scientific day of the faculty of Science and Arts, JUST. 1999.

• Alrefaei, M. H. Some developments of random search methods for discrete stochastic optimization.XX International Seminar on Stability Problems for Stochastic Models. Lublin 1999, Poland.

• Alrefaei, M. H. Stochastic optimization using the standard clock technique. 8th Silivri-G.Magusa Workshop on Stochastic Analysis and Related Topics.North Cyprus. 2000. 

• Alrefaei, M. H., "Optimizing Multihop Radio Network Problems." The Fourth Annual Scientific Day of the Faculty of Science and Arts. JUST, Irbid, Jordan. 2001.

• Alrefaei, M. H. "A Method for Optimizing Admission Control of a Voice Multihop Radio Network."  4th St. Petersburg Workshop on Simulation. St. Petersburg, Russia. 2001.

• Alrefaei, M. H. Simulated Annealing Algorithm for Continuous Stochastic Optimization. Operations Research Conference 2002, Klagenfurt, Austria. 2002.

• Alawneh, Ameen, and M. H. Alrefaei. Selecting the Best Stochatic System. With Ameen Alawneh. Operations Research Conference 2002, Klagenfurt, Austria. 2002.

• Alrefaei, M. H.  A Technique for Simulation Optimization. The Fourth Middle East Symposium on Simulation and Modeling (MESM) Sharjah, UAE. Sept. 2002.

• Alrefaei, M. H. A stopping Rule for Stochastic Simulated Annealing with Constant Temperature. 3rd WSEAS Int. Conf. on SIMULATION, MODELLING and OPTIMIZATION (ICOSMO 2003) Rethymno, Crete Island , Greece , October 13-15, 2003 .

• Alrefaei, M. H.  and Hossam Abdul-Rahman. Two Sequential Algorithms for Selecting one of the Best Simulated Systems. The 4^th WSEAS International Conference on Simulation, Modeling and Optimization (ICOSMO 2004). Izmir , Turkey , September 13-16/2004.

• Alrefaei, M. H., and Mohammad Al-Momani. Subset Selection of Best Simulated Systems. First International Conference on Modeling, Simulation and Applied optimization (ICMSAO 2005). American University of Sharjah , UAE Feb 1-3/ 2005

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Classes Taught:

Graduate Level:

·         Math 794: Special Topics in Operations Research (Graduate Level taught at the Math Department  JUST)

·         CSCI 635, EENG 635: Probability and Stochastic Process (Graduate level taught at the NYiT Middle East Branch of Amman for Computer science and Electrical Engineering Students)

Undergraduate Level:

·         Math 492: Research on Applied Mathematics.

·         Math 475: Optimization Theory

·         Math 472: Seminar in Operations Research

·         Math 470: Probabilistic Models in Operations Research

·         Math 454: Modeling and Simulation

·         Math 416: Seminar in Programming and Analysis

·         Math 412: Computer Simulation

·         Cpe 412: Computer Simulation and Modeling (Taught at the Department of Computer Engineering at JUST)

·         Math 371: Linear Programming

·         Math 241: Discrete Mathematical Structure (for Computer sciences and computer Engineering majors)

·         CIS 491: Graduation Project, Focused (Taught at the Department of Computer Science and Information Technology at JUST)

·         Some other teaching activities include

o        Math 101, 102, 201 Calculus courses

o        Stat 101: Introduction to Statistics (Taught at the Department of Statistics at Yarmouk University)

o        Math 125: Finite Mathematics (Taught at the NYiT Middle East Branch)

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Related Links:

• CIMPA Jordan Summer School(JUST)
• http://www.wseas.org
• Global Optimization Home Page
• IIASA Home Page
• INFORMS
• The Winter Simulation Conference Home Page

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Last update Monday January 18 ,2006