ـ مقالات منتشر شده در مجلات بین المللی ( ISI,ISC ) :

 

  مقالات منتشر شده در مجلات معتبر بین المللی خارجی

 

New analytical hierarchical process/data envelopment analysis methodology for ranking decision-making units/ international transactions in operational research/2013

 

An enumeration algorithm for integer-valued data envelopment analysis/ international transactions in operational research/2013

 

Improving the discrimination of DEA models in multiple time periods/ international transactions in operational research/2012

 

Global MalmquistIndex:The Effect of the Balanced Factor/ Australian Journal of Basic and Applied Sciences/2012

 

proportional production trade-offs in dea/ asia-pacific journal of operational research/2012

 

برای رتبه بندی واحدهای تصمی مگیرنده AHP / DEA توسعهای بر روش,مدیریت صنعتی دانشکده مدیریت دانشگاه تهران,

1390/01/01

The master Malmquist index measurement using DEA-based weighted average efficiency,Int. J. Data Analysis Techniques and Strategies,1390/10/01 

Measuring the Effect of the Rules and Regulations on Global Malmquist Index,International Journal of Operations Research and Information Systems,1390/06/01 

Improving the discrimination of DEA models in multiple time periods, INTERNATIONAL TRANSACTIONS IN OPERATIONAL RESEARCH1390/01/05,

An enumeration algorithm for integer-valued data envelopment analysis,INTERNATIONAL TRANSACTIONS IN OPERATIONAL RESEARCH,1390/04/01 

 New analytical hierarchical process/data envelopment analysis methodology for ranking decision-making units,INTERNATIONAL TRANSACTIONS IN OPERATIONAL RESEARCH,1390/01/01
o Measuring the Effect of the Rules and Regulations on Global Malmquist Index, International Journal of Operations Research and Information System (IJORIS), 2011, In press. (joint with M. Afsharian)

 o New AHP/DEA Methodology for Ranking Decision-Making Units, International Transactions in Operational Research (ITOR), 2011, In press. (joint with M. Rafiee Sani)

 o Improving Discrimination of DEA Models in Multiple Time Periods, International Transactions in Operational Research (ITOR), 2010, Vol. 17, pp. 667-679. (joint with M. Afsharian)

 o A note on " An Extended Numeration Method for Solving Free Disposal Hull Models in DEA", Asia-Pacific Journal of Operational Research, 2010, Vol. 27, No. 5, pp. 607-610. (joint with R. Khanjani).

 o The measurement of relative efficiency using data envelopment analysis with assurance regions that link inputs and outputs, European Journal of Operational Research, 2009, Article in Press, (joint with M. Khalili, A. Camanho, and M. Portela).

 o An improvement on Tracy and Chen's model " a generalized model for weight restrictions in DEA, Journal of Operational Research Society, 2009, Article in Press, (joint with M. Khalili, A. Camanho, and M. Portela).

 o A complete ranking of DMUs using restrictions in DEA models, Applied Mathematics and Computation, 2007, Vol. , pp. (joint with M. Afsharian).

 o Model improvement for computational difficulties of DEA technique in the presence of special DMUs, Applied Mathematics and Computation, 2006, Vol. , pp. (joint with M. Afsharian).

 o Recognizing the efficiency, weak efficiency and inefficiency of DMUs with an epsilon independent linear program, Applied Mathematics and Computation, 2006, Vol. , pp. (joint with M. Khalili).

 o An efficient approach for computing non-Archimedean  in DEA based on integrated models, Applied Mathematics and Computation, 2005, Vol. , pp. (joint with S.A. Mirhassani).

 o The overall assurance interval for the non-Archimedean Epsilon in DEA models; A partition base algorithm, Applied Mathematics and Computation, 2005, Vol. , pp.

 o An Assurance Interval for the Non-Archimedean Epsilon in DEA Models, Operations Research, 2000, Vol. 48, pp. 344-347 (joint with S. Mehrabian, G.R. Jahanshahloo and G.R. Amin).

 o A Complete Efficiency Ranking of Decision Making Units in Data Envelopment Analysis, Computational Optimization and Application, 1999, Vol. 14, pp. 261-266 (joint with S. Mehrabian and G.R. Jahanshahloo).

 o Sampling Size and Efficiency Bias in Data Envelopment Analysis, Journal of Applied Mathematics & Decision Sciences, 1998, Vol. 2, pp. 51-64 (joint with M. Howland and C. van de Panne).

 

  مقالات منتشر شده در مجلات معتبر علمی و پژوهشی داخل

 

 

 o Application of DEA to performance evaluation of health system of Asian countries, Health Information Management Journal, 2010, Vol. 7, No. 1, pp. 1-14. (joint with Sattari) (In Persian)

 o Ranking efficient units in DEA using the weakened under evaluation unit in the production possibility set, Journal of Science and Engineering, Iran University of Science and Technology, 2008, Vol., pp. (joint with Keshvari).

 o Combination Model of TFP evaluation using DEA and Tournquist index; with calculation of NIOC productivity growth, Quarterly Journal of Modarress, Tarbiyat Modarress University, 2007, Vol., pp. (joint with Afsharian) (in Persian).

 o Analyze of the regional differences in productivity of agricultural section using DEA, Journal of Economics and agriculture, Shiraz University, 2007, Vol., pp. (joint with Abdollahi and Rajabi Tanha) (in Persian).
o Logical solutions presentation of improvement of TFP using generalized DEA models, Quarterly Journal of Economical Research, Economics research Center. 2007, Vol., pp. (joint with Afsharian and Taslimi) (in Persian).

 o TFP growth using generalized DEA models, Economics Researches, Tarbiyat Moddaress University, 2007, Vol., pp. (joint with Afsharian and Khalili) (in Persian).
o Evaluation of TFP growth using non-parametric DEA models; with a case study of power industry, Journal of Economical Research, University of Tehran. 2007, Vol., pp. (joint with Afsharian and Analui) (in Persian).

 o Courses scheduling in the university using two phases mathematical programming models, Journal of Daneshvar, Shahed University, 2006, Vol., pp. (joint with Khalili and Mansour-Zadeh) (in Persian).
o Generalized inverse DEA models, Journal of Amir-Kabir, Amir-Kabir University of Technology, 2006, Vol., pp. (joint with Khalili, Taslimi, and Afsharian) (in Persian).
o Evaluation of TFP growth and efficiency and technological changes using generalized DEA models; with a case study of oil fields, Quarterly Journal of Economical Research, Economics research Center. 2006, Vol., pp. (joint with Afsharian) (in Persian).

 o A layer DEA model for measuring and improving the efficiency in the presence of special decision making units, Journal of Science and Engineering, Iran University of Science and Technology, 2006, Vol., pp. (joint with Mirhassani).

 o Recognizing efficiency, weak efficiency and inefficiency of DMUs using Epsilon independent linear program, Journal of Science and Engineering, Iran University of Science and Technology, 2005, Vol., pp. (joint with Keshvari and Khalili) (in Persian).

 o Evaluation of productivity growth using Malmquist Index of DEA, Journal of Science and Engineering, Iran University of Science and Technology, 2005, Vol., pp. (joint with Keshvari and Hashemi) (in Persian).

 o Efficiency Evaluation of the companies accepted in Tehran bourse using mathematical method of benchmarking of DEA, Quarterly Journal of Economical Research, Economics research Center. 2005, Vol., pp. (joint with Nikomaram and Ghaee) (in Persian).

 o Mathematical model of performance evaluation for the organizations with low homogeneity and its application on power utility companies, Journal of Management and Development, Institute of Management Research and Education, 2001, Vol., pp. (joint with M. Daneshian) (in Persian).

 o Performance evaluation of the agricultural water networks using DEA, Journal of agricultural science and technology, Esfahan Industrial University, 2001, Vol. , pp. (joint with Monem and Salehi) (in Persian).
o Efficiency Bias in DEA: A Simulation Study on a Large Scale Bank Branches, Journal of Management and Economy, Teacher Training University, 1998, Vol. 37, pp. 89-107 (joint with C. van de Panne).

 o Measuring the efficiency of Academic Units at TTU, Journal of Management and Economy, Teacher Training University, 1994, Vol. 20, pp. 1-13 (joint with G.R. Jahanshahloo).

 o Decision Support System for Determining the Optimum No of Personnel for Power Plants, Journal of Management and Development, Institute of Management Research and Education, 2000, Vol. 3, pp. 40-48 (joint with M. Daneshian and N. Alamdar) (in Persian).

 o Performance Evaluation of Electricity Distribution using Data Envelopment Analysis, Journal of Management and Development, Institute of Management Research and Education, 1999, Vol. 2, pp. 61-70 (joint with M. ZerafatAngiz and N. Alamdar) (in Persian).

 o Measuring the Efficiency of Academic Units at the Teacher Training University, Journal of Sciences, Teacher Training University, 1995, Vol. 6, (joint with G.R. Jahanshahloo).

 o Power Plant Efficiency Evaluation using Data Envelopment Analysis, Journal of Sciences, Islamic Azad University, 2000, Vol. 9, No. 35, pp. (joint with N. Alamdar) (in Persian).

 o Technical Progress and Regress Evaluation of the Industrian section of Iran, Journal of Sciences, Islamic Azad University, 1999, Vol. 8, No. 33, pp.

 o Efficiency Evaluation of Insurance Companies Branches using DEA, Quarterly Journal of Insurance, Iran Central Insurance, 1999, Vol. 54, pp. 34-45 (in Persian).

 o The Industrial Sector Efficiency of Iran using Data Envelopment Analysis, Journal of Sciences, Islamic Azad University, 1997, Vol. 6, No. 24, pp. (joint with M.A. Sobhanallahi and S. Daneshvar).

 o Tutorial on Data Envelopment Analysis, Journal of Sciences, Islamic Azad University, 1997, Vol. 6, No. 23, pp. (joint with S. Mehrabian).

 o A Modified Model for Variable Returns to Scale in DEA: with an Empirical Investigation, Journal of Sciences, Islamic Azad University, 1997, Vol. 6, No. 23, pp. (joint with S. Saati, S. Daneshvar).

 o Determining the Comparative Efficiency of Schools; an Application of Data Envelopment Analysis, Journal of Sciences, Islamic Azad University, 1997, pp. (joint with G. R. Jahanshahloo, F. Hossein-Zadeh and C. van de Panne).

 o Model Specification and Efficiency Bias in Data Envelopment Analysis, Journal of Sciences, Islamic Azad University, 1997, Vol. 6, pp. 377-391 (joint with C. van de Panne).

 o Computational Frame-Work of Infinitesimal in DEA; with an Empirical Investigation on Schools, Journal of Sciences, Islamic Azad University, 1997, Vol. 6, pp. 349-359 (joint with G. R. Jahanshahloo, S. Mehrabian and M. Toloo).

 o The Role of Bounds on Multipliers in DEA; with an Empirical Study, Journal of Sciences, Islamic Azad University, 1997, Vol. 6, pp. 331-347 (joint with G. R. Jahanshahloo, S. Saati M. and S. Mehrabian).

 o Cell Formation in Group Technology; an Empirical Study on Real Data Worth, Journal of Sciences, Islamic Azad University, 1996, Vol. 5, pp. 311-322 (joint with M. A. Sobhanallahi, G. R. Jahanshahloo, and G. R. Amin).

 o Sampling Size and Efficiency in Data Envelopment Analysis, Journal of Sciences, Islamic Azad University, 1996, Vol. 5, pp. 299-310 (joint with S. Mehrabian and C. van de Panne).

 o Using Extreme Recession Directions for Finding Unique Bound for Non-Archimedean Epsilon in DEA Models, Journal of Sciences, Islamic Azad University, 1997, Vol. 6, No. 24, pp. (joint with G.R. Jahanshahloo, S. Mehrabian and S. Daneshvar).

 o Estimating the Volume Delay Functions in the Mashed streets, Journal of Sciences, University for Teacher Education, 1994, Vol. 6, pp. 1-6 (joint with G. R. Jahanshahloo, M. Iranpanah, and F. Sharifzadeh).

 o Measuring the Efficiency of Academic Units at the Teacher Training University, Journal of Economics and Management, Quarterly Journal of the Islamic Azad University, Vol. 20, pp. 1-13 (joint with G. R. Jahanshahloo).

 o Estimation of Returns to Scale using DEA; with Empirical Study, Journal of Sciences, Islamic Azad University, 1996, Vol. 5, pp. 287-297 (joint with G. R. Jahanshahloo, S. Saati M. and S. Daneshvar).

 o A Large-scale Study of Bank Branch Efficiency, Journal of Sciences, Islamic Azad University, 1996, Vol. 5, pp. 263-285 (joint with C. van de Panne and M. Howland).

 o Computational Difficulties of Ranking the Efficient Decision Making Units, Journal of Sciences, Islamic Azad University, 1993, Vol. 3, pp. 204-208 (joint with G. R. Jahanshahloo).

 o Ranking the Efficient Academic Units at the Teacher Training University, Journal of Sciences, Islamic Azad University, 1993, Vol. 3,pp. 218-223 (joint with G. R. Jahanshahloo).

 o The Use of 11 Criterion in Efficiency Analysis, Journal of Sciences, Islamic Azad University, 1993, Vol. 3, pp. 224-233 (joint with G. R. Jahanshahloo).

 o Linear Programming with Multiple Objective Function, Journal of Sciences, Islamic Azad University, 1992, Vol. 2, pp. 407-426 (joint with G. R. Jahanshahloo) (in Persian).

 

 

 

 

 

 

 

مقالات منتشر شده در کنفرانس های بین المللی داخلی و خارجی

کنفرانس های بین المللی خارجی

 

o Extended global Malmquist index, Paper Presented at the 8th  International Conference on DEA (DEA2010), June 2010, Beirut, Lebanon, (joint with Afsharian).

o Effect of rules and regulations on productivity changes, Paper Presented at the 8th  International Conference on DEA (DEA2010), June 2010, Beirut, Lebanon, (joint with Afsharian).

o Using FDH technology to determine anchor points in DEA, Paper Presented at the 24th  European Conference on Operational Research, July 2010, Lisbon, Portugal, (joint with Keshvari).

o New model designer of DEAOS, Paper Presented at the 24th  European Conference on Operational Research, July 2010, Lisbon, Portugal, (joint with Niknejad).

o New features and capabilities of Data Envelopment Analysis Online Software (DEAOS), Paper Presented at the 23ed European Conference on Operational Research, July 2009, Bonn, Germany, (joint with Niknejad).

o An extended numeration method for solving FDH/DEA models of standard economies of scale, Paper Presented at the IFORS 2008 Conference, July 2008, Sandton, South Africa, (joint with Keshvari and Babazadeh).

o Anew approach for classifying the non-homogeneous DMUs using DEA, Paper Presented at the IFORS 2008 Conference, July 2008, Sandton, South Africa, (joint with Aliakbari and Makui).

o Data Envelopment Analysis Online Software (DEAOS), Paper Presented at the 22nd European Conference on Operational Research, July 2007, Prague, Czech Republic, (joint with Afsharian and Niknejad).

o Provincial gas distribution companies productivity monitoring system by using DEA, Paper Presented at the 22nd European Conference on Operational Research, July 2007, Prague, Czech Republic, (joint with Babazadeh).

o Frontier relationship between performance metrics, Paper Presented at the 22nd European Conference on Operational Research, July 2007, Prague, Czech Republic, (joint with Analui).

o Full ranking of DMUs with a multi-objective DEA model, Paper Presented at the 5th  International Symposium on DEA and Performance Management, January 2007, Hyderabad, India, (joint with Khalili and Afsharian).

o DEA-based Tornquvist productivity index; an application in the oil industry, Paper Presented at the 5th  International Symposium on DEA and Performance Management, January 2007, Hyderabad, India, (joint with Afsharian).

o Well drilling performance measurement using Data Envelopment Analysis, Paper Presented at the 4th International DEA Symposium, June 2004, in Aston University, UK, (joint with S.A. Mirhassani).

o From the Data Envelopment Analysis Technique to the Development of a Productivity System, Paper Presented at the 4th International DEA Symposium, June 2004, in Aston University, UK, (joint with S.A. Mirhassani).

o Efficiency Assessment with Integrated Models and General Weight Restrictions, Paper Presented at the International DEA Symposium 2002, June 24-26, 2002, in Moscow, Russia, (joint with S.A. Mirhassani).

o A Layer Model of Measuring and Improving the Efficiency for the Abnormal Data, Paper Presented at the International DEA Symposium 2002, June 24-26, 2002, in Moscow, Russia, (joint with S.A. Mirhassani).

o Developing a New DEA Based Approach for Bank Branch Grading and Ranking, Paper Presented at the 43rd Conference of the Operations Research Society, September 4-6, 2001, in Bath, U.K..

o Facet Analysis on VRS Models in DEA: with an Empirical Study, Paper Presented at the joint International Conference of Operations Research EURO XV & INFORMS XXXIV, July 14-17, 1997, in Barcelona, Spain, (joint with G.R. Jahanshahloo, S. Mehrabian and S. Daneshvar).

o A Large-Scale Study of Bank Branch Efficiency, Paper Presented at the 37th National Conference of the Canadian Operational Research Society, May 23-25, 1995, in Calgary (joint with C. Van de Panne and M. Howland).

o Efficient Frontier Estimation, a New Approach, Paper Presented at the 37th National Conference of the Canadian Operational Research Society, May 23-25, 1995, in Calgary (joint with G. R. Jahanshahloo).

کنفرانس های ملی و بین المللی داخل 

o A new method for increasing the discrimination power of DEA in comparison to PCA, Proceeding: the 3rd   International Conference of Iranian Operations Research Society, Amirkabir University, May 2010, (joint with Rajabi Tanha).

o The nonconvex global Malmquist index, Proceeding: the 3rd   International Conference of Iranian Operations Research Society, Amirkabir University, May 2010, (joint with Afsharian).

o Measuring the impact of the rules and regulations on productivitychanges in DEA literature, Proceeding: the 3rd   International Conference of Iranian Operations Research Society, Amirkabir University, May 2010, (joint with Afsharian).

o Modeling productivity evaluation using DEA and BSC, Proceeding: the 7th   International Management Conference, Sharif University of Industry, Nov. 2009, (joint with Mohajer).

o Estimating Confidence Intervals of DEA efficiency in Iranian Gas Preventional Companies using Bootstrapping, Proceeding: the 2nd  International Conference of Iranian Operations Research Society, Mazandaran University, May 2009, (joint with Shahraeini).

o Improving Discrimination of DEA Models in Multiple Time Periods by Defining a New Decomposition of Malmquist Index, Proceeding: the 2nd  International Conference of Iranian Operations Research Society, Mazandaran University, May 2009, (joint with Afsharian).

o An efficiency improvement approach in DEA, Proceeding: the 1st International Conference of Iranian Operations Research Society, Kish, February 2008, (joint with Afsharian and Khalili).
o Presenting free disposal hull graphically, Proceeding: the 1st International Conference of Iranian Operations Research Society, Kish, February 2008, (joint with Keshvari).
o An extended numeration algorithm for FDH models in DEA, Proceeding: the 1st International Conference of Iranian Operations Research Society, Kish, February 2008, (joint with Keshvari).
o The pitfalls of using ratio-form of indices in DEA, Proceeding: the 1st International Conference of Iranian Operations Research Society, Kish, February 2008, (joint with Khalili).
o Evaluation of under evaluation unit based on its homogeneous units, Proceeding: the 39th  Annual Iranian Mathematics Conference, Kerman, September 2008, (joint with Bolori) (in Persian).

o Assignment problem development based on non-convexity, Proceeding: the 39th  Annual Iranian Mathematics Conference, Kerman, September 2008, (joint with Bazargani) (in Persian).

o TFP growth of power industry, Proceeding: the 6th  National  Energy Congress, Tavanir, Tehran, June 2007, (joint with Afsharian and Analui) (in Persian).

o Malmquist productivity index based on non-convex DEA models, Proceeding: the 38th Annual Iranian Mathematics Conference, Zanjan, September 2007, (joint with Rajabi Tanha) (in Persian).

o Mathematical models of productivity growth evaluation; differences and capabilities, Proceeding: the 38th Annual Iranian Mathematics Conference, Zanjan, September 2007, (joint with Mohammadi) (in Persian).

o Malmquist productivity index and its generalization, Proceeding: the 34th   Annual Iranian Mathematics Conference, Shahrood, September 2003, (joint with Hashemi). (in Persian).

o Coputational accuracy and Non-Archimedean infinitesimal Epsilon forms of DEA models, Proceeding: the 4th  Seminal of Mathematical Analysis and its Applications, 2003, IUST, Tehran, pp. (Joint with S.A. Mirhassani)

o Non-Archimedean infinitesimal Epsilon forms of DEA models, Proceeding: the 4th  Seminal of Mathematical Analysis and its Applications, 2003, IUST, Tehran, pp. (Joint with S.A. Mirhassani and Pourtaghavi)
 
o Performance Evaluation of all organizational levels of regional power companies, Proceeding: the 4th  Congress of Quality and Productivity in the Power System, 2003, Tehran, pp. (Joint with S.A. Mirhassani.) (in Persian).

o A layer evaluation using controlled DEA models, Proceeding: the 31st  Annual Iranian Mathematics Conference, Mashhad, September 2002, Forthcoming (joint with Mirhassani).

o Performance Evaluation and Improvement Strategies using DEA; an Application to KREC, Proceeding: the Third Congress of Quality and Productivity in the Power System, 2002, Tehran, pp. 1-10 (Joint with S.A. Mirhassani, M. Kassaeyan, M.R. Hasheminejad) (in Persian).

o Performance Evaluation of the Human Resource Section of TREC, Proceeding: the Third Congress of Quality and Productivity in the Power System, 2002, Tehran, pp. 1-10 (Joint with S.A. Mirhassani and H. Vaziri S.) (in Persian).

o Dynamic Performance Evaluation using Mathematical Models, Proceeding: the Second Congress of Quality and Productivity in the Power System, 2001, Tehran, pp. 1-10 (in Persian).

o Decision Support System for Determining the Optimum No of Personnel using Data Envelopment Analysis, Proceeding: the Second International Conference of Applied Mathematics, October 26-28, 2000, Tehran, pp. 286-298 (joint with B. Daneshian and N. Alamdar) (in Persian)

o Performance Evaluation of Garmsar Irrigation Water Company using Data Envelopment Analysis, Proceeding: the Congress of Garmsar and its Development, 2001, Garmsar (in Persian).

o Measuring Technical Progress and Regress of the Industrial Section of Iran using Data Envelopment Analysis, Proceeding: the First Conference of Optimization and its Applications, 1998, Mashed, Forthcoming.

o Efficiency Evaluation and Sensitivity Analysis in Data Envelopment Analysis, Proceeding: the First Congress Applications of Mathematics in the Human Sciences and Medical, 2000, Tehran, forthcoming (joint with H. Mohammady) (in Persian).

o Ranking the High Schools using Data Envelopment Analysis, Proceeding: the First Congress Applications of Mathematics in the Human Sciences and Medical, 2000, Tehran, (joint with B. Daneshian) (in Persian).

o Sensitivity Analysis of Decision Making Units in Data Envelopment Analysis, Proceeding: the First International Congress of Graph, Combinatorial and Computational Algorithms and Applications, 2000, Tehran, (joint with H. Mohammady) (in Persian).

o Power Plant Efficiency Evaluation using Data Envelopment Analysis, Proceeding: the 13th International Conference of Power Systems, 1999, Tehran , (joint with N. Alamdar) (in Persian).

o Performance Evaluation Banks using DEA, Proceeding: the 2nd Congress of Performance Evaluation of Governmental Organizations, Tehran, August 26, 2000, pp. 179-188 (joint with N. Alizad) (in Persian).

o Data Envelopment Analysis as Effective Tools for Performance Evaluation of Governmental Organizations, Proceeding: the 2nd Congress of Performance Evaluation of Governmental Organizations, Tehran, August 26, 2000, pp. 165-177 (joint with S. Jafari) (in Persian).

o Performance Evaluation of Road Offices of Iran using DEA, Proceeding: the 2nd Congress of Performance Evaluation of Governmental Organizations, Tehran, August 26, 2000, pp. 7-14 (joint with B. Daneshian and M. Iranmanesh) (in Persian).

o DEA Models for Grading the Decision Making Units, Proceeding: the 31st Annual Iranian Mathematics Conference, Tehran, August 23-26, 2000, (joint with M. ZerafatAngiz) (in Persian).

o Determining the Inputs Congestion using CRS Models in DEA, Proceeding: the 31st Annual Iranian Mathematics Conference, Tehran, August 23-26, 2000, (joint with B. Daneshian) (in Persian).

o Controlling the Indexes Importance in the Evaluation of Efficiency in DEA: with an Empirical Investigation on the Power Plants Efficiency, Proceeding: the 30th Annual Iranian Mathematics Conference, Ardabil, August 1-4, 1999, Forthcoming (joint with B. Arabi and N. Alamdar) (in Persian).

o Determining the Insurance Index using DEA, Proceeding: the 30th Annual Iranian Mathematics Conference, Ardabil, August 1-4, 1999, Forthcoming (joint with H.R. Rostami).

o The Overall Assurance Interval of the Non-Archimedean Epsilon in the DEA Models: An Efficient Algorithm, Proceeding: the 30th Annual Iranian Mathematics Conference, Ardabil, August 1-4, 1999, Forthcoming (joint with C. van de Panne).

o An Assurance Interval for the Non-Archimedean Epsilon in the DEA Models, Proceeding: the 30th Annual Iranian Mathematics Conference, Ardabil, August 1-4, 1999, Forthcoming (joint with S. Mehrabian, G.R. Jahanshahloo and G.R. Amin).

o Efficiency Bias in DEA: a Simulation Study, Proceeding: the 30th Annual Iranian Mathematics Conference, Ardabil, August 1-4, 1999, Forthcoming (joint with C. van de Panne).

o Using Extreme Recession Direction on Determining the Unique Upper Bound of Epsilon in DEA Models , Proceeding: the 29th Annual Iranian Mathematics Conference, Tehran, March 28-31, 1998, Forthcoming (joint with G. R. Jahanshahloo, S. Mehrabian and S. Daneshvar).

o Model Specification and Efficiency Bias in DEA , Proceeding: the 29th Annual Iranian Mathematics Conference, Tehran, March 28-31, 1998, Forthcoming (joint with C. van de Panne).

o Ranking of Decision Making Units with Weight Restrictions: with an Empirical Study on University Departments , Proceeding: the 29th Annual Iranian Mathematics Conference, Tehran, March 28-31, 1998, Forthcoming (joint with G. R. Jahanshahloo and J. PoorMahmood).

o The Use of Categorical Variable in DEA; with an Empirical Investigation, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 573-582 (joint with G. R. Jahanshahloo, S. Mehrabian and A. R. Vahidi).

o Computational Frame-Work of Infinitesimal in DEA; with an Empirical Study, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 547-554 (joint with G. R. Jahanshahloo, S. Mehrabian and M. Toloo).

o The Role of Bounds on Multipliers in DEA; with an Empirical Study, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 459-472 (joint with G. R. Jahanshahloo, S. Saati M and S. Mehrabian).

o Estimation of Returns to Scale using DEA; with an Empirical Study, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 451-457 (joint with G. R. Jahanshahloo, S. Saati M and S. Daneshvar).

o A Complete Efficiency Ranking of DMU's in DEA; with an Empirical Study, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 359-370 (joint with G. R. Jahanshahloo and S. Mehrabian).

o Tutorial on Data Envelopment Analysis, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 255-280 (joint with G. R.. Jahanshahloo).

o Determining the Comparative Efficiency of High Schools; An Application of DEA, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 219-230  (joint with G. R. Jahanshahloo, F. Hossein-Zadeh and C. van de Panne).

o Facet Analysis an VRS Models in DEA; with an Empirical Study, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 109-120  (joint with G. R. Jahanshahloo, S. Mehrabian, S. Daneshvar and S. Saati).

o Cell Formation in Group Technology; an Empirical on Real Data World, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 41-50  (joint with M. A. Sobhanallahi, G. R. Jahanshahloo, and G. R. Amin).

o Sampling Size and Efficiency in DEA, Proceeding: the 28th Annual Iranian Mathematics Conference, Tabriz, March 28-31, 1997, pp. 25-32  (joint with C. van de Panne and S. Mehrabian).

o A Modified Model for VRS in DEA; with an Empirical Study, Proceeding: the 27th Annual Iranian Mathematics Conference, Shiraz, March 28-31, 1996, (Joint with G. R. Jahanshahloo).

o  Measuring the Efficiency of Academic Units at the Teacher Training University, Proceeding: the 26th Annual Iranian Mathematics Conference, Kerman, March 28-31, 1995, pp. 167-171 (Joint with G. R. Jahanshahloo).