Publications

Books and Book Chapters

Magazine Articles
  1. R. A. Ghunem, A. H. El-Hag, M. Marzinotto, M. T. Nazir, K. L. Wong and S. H. Jayaram, “Overhead Lines and Wildfires: Role of Outdoor Insulators”, IEEE Electrical Insulation Magazine, Vol. 38, No. 4, pp. 14-25, July/August 2022.
  2. Ayman El-Hag, “Application of machine learning in outdoor insulators condition monitoring and diagnostics”, IEEE Instrumentation and Measurement Magazine, Vol. 24, No. 2, pp. 101-108, April 2021 (invited for a special issue titled “Instrumentation and Measurement in Canada”)
  3. Ayman H. El-Hag, “Promoting Condition Monitoring and Diagnostics of Electrical Insulation in Undergraduate Capstone Graduation Projects”, IEEE Electrical Insulation Magazine, Vol. 31, No. 5, pp. 8-15, September/October 2015.
  4. Esam AlMurawwi, Kamal AlMazam, AbdelRahim Huwair, Ayman El-Hag, and Nasser Qaddoumi, “Partial Discharge and Oil Quality Monitoring Using an RF Antenna”, IEEE Industry Applications magazine, pp. 57-59, May/June 2010.
  5. Ayman H. El-Hag, Luiz Henrique Meyer and Ali Naderian, “Experience with Salt-fog and IPT Tests for Aging Polymeric Materials” IEEE Electrical Insulation Magazine, Vol. 26, No. 2, pp. 42-50, March/April 2010.

Refereed Journal Papers
  1. Abdulla Lutfi, Ayman El Hag, and Khaled Shaban, “Non-Intrusive Ultrasonic Sensing and Deep Learning for Outdoor Ceramic Insulator Assessment”, IEEE Transactions on Dielectric and Electrical Insulation, in the press
  2. Ahmad Darwish, Shady S. Refaat, Haitham Abu-Rub, Hamid A. Toliyat, Celal F. Kumru, Farook Mustafa, Ayman H. El-Hag, Graeme Coapes, and Sayed Mohammad Kamel, “Novel Antenna for Partial Discharge Detection and Classification: A Convolutional Neural Network-Based Deep Learning Approach ”, IEEE Transactions on Dielectric and Electrical Insulation, in the press.
  3. M. A. Faraji, A. Shooshtari, and A. El-Hag, “Stacked Ensemble Regression Model for Prediction of Furan”, Energies 16, 7656, pp. 1-11, 2023.
  4.  Hafiz M. Usman, Ramadan ElShatshat and Ayman H. El-Hag, “Distribution Transformer Remaining Useful Life Estimation Considering Electric Vehicle Penetration”, IEEE Transactions on Power Delivery, Vol. 38, No. 5, pp. 3130-3141, October 2023.
  5. Hafiz M. Usman, Ramadan ElShatshat and Ayman H. El-Hag, “A Novel Non-Intrusive Framework for Real-Time Disaggregation of Behind-the-Meter Solar Generation from Smart Meter Data”, Electric Power System Research, Volume 225, pp. 1-10, September 2023.
  6. Fadi Z. Kamand, Belal Saleh, Mohammad K. Hassan, Refat A. Ghunem, Ayman H. El-Hag, Ahmed Abdala, and Leena Al-Sulaiti, “Tracking and Erosion of polydimethlysiloxane with Different Molecular Weight for Outdoor Insulation”, IEEE Transactions on Dielectric and Electrical Insulation, Vol. 30, Issue 2, pp. 902-907, April 2023.
  7. Wasim Al-Masri, Ali Wadi, Member, Mamoun F. Abdel-Hafez, Hashim A. Hashim, and Ayman El-Hag, “Partial Discharge Localization in Power Transformers Using Invariant Extended Kalman Filter”, IEEE Transactions on Instrumentation and Measurement, Volume 72, pp. 1-10, 2023, Art no. 1002110
  8. Sara Mantach, Abdulla Lutfi, Hamed Moradi Tavasani, Ahmed Ashraf, Ayman El-Hag and Behzad Kordi, “Deep Learning in High Voltage Engineering: A Literature Review” Energies, 15, 5005, pp. 1-32, 2022.
  9. Fadi Z. Kamand, Basharat Mehmood, Refat Ghunem, Mohammad K. Hassan, Ayman El-Hag, Leena Al-Sulaiti and Ahmed Abdala, “Self-Healing Silicones for Outdoor High Voltage Insulation: Mechanism, Applications and Measurements”, Energies, 15, 1677, pp. 1-17, 2022.
  10. Hafiz M. Usman, Ramadan ElShatshat, Ayman H. El-Hag and Rabih A. Jabr, “Distribution Transformer kVA Load Estimation Using Smart Meter Data”, Electric Power System Research, Volume 204, pp. 1-11, March 2022.
  11. Youssef El Haj, Ayman H. El-Hag and Refat A. Ghunem, “Application of Deep-Learning via Transfer Learning to Evaluate Silicone Rubber Material Surface Erosion”, Dielectric Letters, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 28, Issue 4, pp. 1465-1467, August 2021.
  12. Danial Waleed, Shayok Mukhopadhyay, Usman Tariq, and Ayman El-Hag, “Drone Based Ceramic Insulators Condition Monitoring”, IEEE Transactions on Instrumentation and Measurement, Vol. 70, pp. 1-12, 2021, Art no. 6007312.
  13. Amir Soltani and Ayman El-Hag, “A New Radial Basis Function Neural Network-Based Method for Denoising of Partial Discharge Signals”, Measurement, Vol. 172, February 2021.
  14. Suganya Govindarajan, Venkateshwar Ragavan, Ayman El-Hag, Kannan Krithivasan and Jayalalitha Subbaiah, “Development of Hankel Singular - Hypergraph Feature Extraction Technique for Acoustic Partial Discharge Pattern Classification”, Energies, 14, no. 7, pp. 1-15, 2021.
  15. Mohammad Avzayesh, Mamoun F. Abdel-Hafez, Wasim Al-Masri, Mohammad AlShabi, Ayman H. El-Hag, “A Hybrid Estimation-Based Technique for Partial Discharge Localization”, IEEE Transactions on Instrumentation and Measurement, Vol. 69, Issue 11, pp. 8744 - 8753, November 2020.
  16. Ahmad Nayyar Hassan and Ayman El-Hag, “Two-Layer Ensemble-Based Soft Voting Classifier for Transformer Oil Interfacial Tension Prediction”, Energies, 13, no. 7, pp. 1-11, 2020.
  17. Amr Ibrahim, Ahmad Dalbah, Ayaat Abualsaud, Usman Tariq and Ayman El-Hag,  “Application of Machine Learning to Evaluate Insulator Surface Erosion”, IEEE Transactions on Instrumentation and Measurement, Vol. 69, Issue 02, pp. 314 - 316, February 2020
  18. Satish Polisetty, Ayman El-Hag and Shesha Jayaram, “Classification of Common Discharges in Outdoor Insulation Using Acoustic Signals and Artificial Neural Network”, IET High Voltage, Vol. 4, No 4, pp. 333–338, 2019.
  19. Daouda Koné, Refat Atef Ghunem, Ladji Cissé, Yazid Hadjadj and Ayman H. El-Hag, “Effect of Residue Formed during the AC and DC Dry-Band Arcing on Silicone Rubber Filled with Natural Silica”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 26, Issue 5, pp. 1613-1619, October 2019.
  20. Amir Abbas Soltani and Ayman El-Hag, “Denoising of Radio Frequency Partial Discharge Signals Using Artificial Neural Network”, Energies, 12, no. 18, pp. 1-14, 2019.
  21. Alhaytham Alqudsi and Ayman El-Hag, “Application of Machine Learning in Transformer Health Index Prediction”, Energies, 12, no. 14, pp. 1-12, 2019.
  22. Abdelrahman K. Abouzeid, Ayman El-Hag and Khaled Assaleh, “Equivalent Salt Deposit Density Prediction of Silicone Rubber Insulators under Simulated Pollution Conditions”, Electric power components and Systems, Vol. 46, No. 10, pp. 1121–1131, December 2018.
  23. Kamel Benhmed, Abdelniser Mooman, Abdunnaser Younes, Khaled Shaban and Ayman El-Hag, “Feature Selection for Effective Health Index Diagnoses of Power Transformers”, Power Engineering Letters, IEEE Transactions on Power Delivery, Vol. 33, Issue 6, pp. 3223-3226, December 2018
  24. Ali Wadi, Wasim Al-Masri, Wisal Siyam, Mamoun F. Abdel-Hafez, Ayman H. El-Hag, “Accurate Estimation of Partial Discharge Location using Maximum Likelihood”, IEEE Sensors Letters, Vol. 2, Issue 4, 2018.
  25. Alhaytham Alqudsi and Ayman El-Hag, “Assessing the Power Transformer Insulation Health Condition Using a Feature-Reduced Predictor Model”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 25, Issue 3, pp. 853-862, June 2018.
  26. Nameer Al Khafaf and Ayman El-Hag, “Bayesian Regularization of Neural Network to Predict Leakage Current in a Salt Fog Environment”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 25, Issue 2, pp. 686-693, April 2018.
  27. Ramy Hussein, Khaled Shaban and Ayman El-Hag, “Denoising Different Types of Acoustic Partial Discharge Signals using Power Spectral Subtraction”, IET High Voltage, Vol. 3, No 1, pp. 44–50, 2018.
  28. Ramy Hussein, Khaled Bashir Shaban, and Ayman H. El-Hag, “Robust Feature Extraction and Classification of Acoustic Partial Discharge Signals Corrupted with Noise”, IEEE Transactions on Instrumentation and Measurement, Vol. 66, Issue 03, pp. 405 - 413, March 2017.
  29. Shaharyar Anjum, Shesha  Jayaram, Ayman  El-Hag and Ali  Naderian, “Detection and Classification of Defects in Ceramic Insulators using RF Antenna”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 24, Issue 1, pp. 183-190, February 2017
  30. Abdalmonam H. Zahed, Ayman El-Hag, Nasser Qaddoumi, Ramy Hussein and Khaled Shaban, “Comparison of Different Fourth Order Hilbert Fractal Antennas for Partial Discharge Measurement”, IEEE Transactions on Dielectrics and Electrical Insulation, , Vol. 24, Issue 1, pp. 175-182, February 2017
  31. Mustafa M.O. Harbaji, Abdalmonam H. Zahed, Shahed A. Habboub, Maryam A. AlMajidi, Mustafa J. Assaf, Ayman H. El-Hag, and Nasser N. Qaddoumi, “Design of Hilbert Fractal Antenna for Partial Discharge Classification in Oil-Paper Insulated System”, IEEE Sensors Journal, Vol. 17, No. 7, pp. 1037-1045, February 2017.
  32. Refat Ghunem, Li-Lin Tay, Hocine Terrab and Ayman H. El-Hag, “Analysis of Service-Aged 200 kV and 400 kV Silicone Rubber Insulation in the Gulf Region”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 23, Issue 6, pp. 3539-3546, December 2016.
  33. Ramy Hussein, Khaled Bashir Shaban, and Ayman H. El-Hag, “Energy Conservation-based Thresholding for Effective Wavelet Denoising of Partial Discharge Signals”, IET Science, Measurement & Technology, Vol. 10, No 7, pp. 813–822, 2016.
  34. H. Terrab, A. H. El-Hag and A. Bayadi, “Surface Condition Assessment of Ceramic Outdoor Insulators under Simulated Pollution Conditions”, Insight - Non-Destructive Testing and Condition Monitoring, Vol. 58, No. 9, pp. 502-509, September 2016.
  35. Wasim Al-Masri, Mamoun F. Abdel-Hafez and Ayman El-Hag, “Towards A High-Accuracy Estimation of Partial Discharge Location”, IEEE Transactions on Instrumentation and Measurement, Vol. 65, Issue 09, pp. 2145 - 2153, September 2016.
  36. Khaled Bashir Shaban, Ayman H. El-Hag, and Kamel Benhmed, “Prediction of Transformer Furan Levels”, Power Engineering Letters, IEEE Transactions on Power Delivery, Vol. 31, Issue 4, pp. 1778 - 1779, August 2016.
  37. Ramy Hussein, Khaled Bashir Shaban, and Ayman H. El-Hag, “Denoising of Acoustic Partial Discharge Signals Corrupted with Random Noise”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 23, Issue 3, pp. 1453-1459, June 2016.
  38. Wei Lee Woon, Ayman El-Hag and Mustafa Harbaji, “Machine Learning Techniques for Robust Classification of Partial Discharges in Oil-Paper Insulation Systems”, IET Science, Measurement & Technology, Vol. 10, No. 3, pp. 221 - 227, 2016.
  39. Wasim Al-Masri, Mamoun F. Abdel-Hafez and Ayman El-Hag, “A Novel Bias Detection Technique for Partial Discharge Localization in Oil Insulation System”, IEEE Transactions on Instrumentation and Measurement, Vol. 65, Issue 02, pp. 448-457, 2016.
  40. Ramy Hussein, Khaled Bashir Shaban, and Ayman H. El-Hag, “Wavelet Transform with Histogram-based Threshold Estimation for Online Partial Discharge Signal Denoising”, IEEE Transactions on Instrumentation and Measurement, Vol. 64, Issue 12, pp. 3601-3614, 2015.
  41. Yousef El Haj, Lutfi Albasha, Ayman El-Hag and Hasan Mir, “Data Communication through Distribution Networks for Smart Grid Applications”, IET Science, Measurement & Technology, Vol. 9, No. 6, pp. 774-781, 2015.
  42. Mustafa Harbaji, Khaled Shaban and Ayman El-Hag, “Classification of Common Partial Discharge Types in Oil-Paper Insulation System Using Acoustic Signals”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 22, Issue 3, pp. 1674-1683, June 2015.
  43. Fadi Aloul, Imran Zualkernan, Ghaleb Husseini, Ayman El-Hag, Yousef Al-Assaf, “A Case Study of a College-Wide First Year Undergraduate Engineering Course”, European Journal of Engineering Education, Volume 40, Issue 1, pp. 32-51, 2015.
  44. Ibrahim Jarrar, Khaled Assaleh and Ayman H. El-Hag, “Using a Pattern Recognition-Based Technique to Assess the Hydrophobicity Class of Silicone Rubber Materials”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 21, Issue 6, pp. 2611-2618, December 2014.
  45. Yomna O. Shaker, Ayman H. El-Hag, Utkarsh Patel and Shesha H. Jayaram, “Thermal Modeling of Medium Voltage Cable Terminations under Square Pulses”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 21, Issue 3, pp. 932-939, June 2014.
  46. Farag Sallabi, A. M. Gaouda, A. H. El-Hag and M.M.A. Salama, “Evaluation of ZigBee Wireless Sensor Networks under Abnormal Conditions in Electric Distribution Systems”, IEEE Transactions on Power Delivery, Vol. 29, Issue 1, pp. 13-20, February 2014.
  47. E. A. Cherney, M. Marzinotto, R. S. Gorur, I. Ramirez, S. Li, A. El-Hag, A. Tzimas, “End-of-Life and Replacement Strategies for RTV Silicone Rubber Coatings”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 21, Issue 1, pp. 253-261, February 2014.
  48. Nasser Qaddoumi, Ayman H. El-Hag, and Yasser Saker, “Outdoor Insulators Testing Using Artificial Neural Network Based Near-Field Microwave Technique”, IEEE Transactions on Instrumentation and Measurement, Vol. 63, Issue 2, pp. 260-266, 2014.
  49. Ibrahim Y. Shurrab, Ayman H. El-Hag, Khaled Assaleh, Refat Atef Ghunem and Shesha Jayaram, “An RF-Based Monitoring and Classification of Partial Discharge on Silicone Rubber Surface”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 20, Issue 6, pp. 2188-2194, December 2013.
  50. A. H. El-Hag, O. Rodriguez, S. H. Jayaram and M. W. Griffiths, “A Performance Study of a Multi-level Electrode Treatment Chamber for Food Processing”, IEEE Transactions on Industry Applications, Vol. 49, No. 3,  pp. 1091-1097, May/June, 2013.
  51. E. A. Cherney, A. El-Hag, S. Li, R. S. Gorur, L. Meyer, I. Ramirez, M. Marzinotto, J. M. George, “RTV Silicone Rubber Pre-coated Ceramic Insulators for Transmission Lines”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 20, No. 1,  pp. 237-244, February 2013.
  52. A. Swedan, A. H. El-Hag and K. Assaleh, “Acoustic Detection of Partial Discharge Using Signal Processing and Pattern Recognition Techniques”, Insight - Non-Destructive Testing and Condition Monitoring, Vol. 54, No. 12, pp. 667-672, December 2012.
  53. Refat A. Ghunem, Khaled Assaleh and Ayman H. El-Hag, “Artificial Neural Networks with Stepwise Regression for Predicting Transformer Oil Furan Content”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 19, No. 2, pp. 414-420, April 2012.
  54. A. R. Al-Ali, Ayman El-Hag, Mujib Bahadiri, Mustafa Harbaji, Yousef Ali El Haj, “Renewable and Storage Energy Integration for Smart Grid Housing”, Journal of Electronic Science and Technology, Vol. 10, No. 1, pp. 7-14, March 2012.
  55. Robert Allan, Shesha Jayaram, Ayman El-Hag and Paul McGrath, “Development and Testing of a Conductive Composite Material for Wet ESP Applications”, International Journal on Plasma Environmental Science and Technology, Vol. 6, No. 1, March, pp. 15-19, 2012.
  56. Nabil Bastaki, A. M. Gaouda, A. H. El-Hag and S. H. Jayaram, “Condition Monitoring of Pulsed Electric Field Food Processing Systems”, Insight - Non-Destructive Testing and Condition Monitoring, Vol. 54, No. 1 January 2012, pp. 36-44.
  57. Ayman H. El-Hag, Shesha H. Jayaram, O. Rodriguez, and M. W. Griffiths “The Influence of Size and Shape of Microorganism on Pulsed Electric Field Inactivation”, IEEE Transactions on nano-bio science, Vol. 10, No. 3, September 2011 , pp. 133-138.
  58. Omniyah Gul M. Khan and Ayman H. El-Hag, “Biological Cell Electroporation Using Nanosecond Electrical Pulses”, Journal of Medical Imaging and Health Informatics, Vol. 1, No. 3, September 2011 , pp. 278-283.
  59. Ayman H. El-Hag, Yasser Adel Saker and Ibrahim Shurrab, “Online Oil Condition Monitoring using Partial Discharge Signal” Power Engineering Letters, IEEE Transactions on Power Delivery, Vol. 26, No. 2, pp. 1288-1289, April 2011.
  60. N.  Qaddoumi, A. H. El-Hag, M. Al Hosani, I. Al Mansouri and H. Al Ghufli, “Detecting Defects in Outdoor Non-Ceramic Insulators using Near Field Microwave Non-Destructive Testing” IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 17, No 2, pp. 402-407, April 2010.
  61. M. Gaouda, A. H. El-Hag and S. H. Jarayam, “Detection of Discharge Activities During Pulsed Electric Field Food Processing” IEEE Transactions on Industry Applications, Vol. 46, No. 1, pp. 16-22, January/February 2010.
  62. A. H. El-Hag, R. Dadarwal, O. Rodriguez S. H. Jayaram and M. W. Griffiths, “Survivability of Inoculated Versus Naturally Grown Bacteria in Apple Juice under Pulsed Electric Fields” IEEE Transactions on Industry Applications, Vol. 46, No. 1, pp. 9-15, January/February 2010.
  63. Khaled Shaban, Ayman El-Hag and Andrei Matveev, “A Cascade of Artificial Neural Networks to Predict Transformers Oil Parameters” IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 16, No. 2, pp. 516-523, April 2009.
  64. A.H. El-Hag, S. Jayaram & E.A. Cherney, “Calculation of leakage current density of silicone rubber insulators under accelerated aging conditions” Journal of Electrostatics, N0. 67, pp. 48-53. 2009.
  65. T.K. Abdel-Galil, A. H. El-Hag, A.M. Gaouda, M. M. A. Salama  and  R. Bartnikas, “Partial Discharge De-noising using Eigen-Decomposition Technique” IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 15, Issue 6, pp. 1657-1662, December 2008.
  66. A. H. El-Hag, Ali Naderian & Majid Sanaye-Pasand “Prediction of Leakage Current of Polymeric Insulators in Early Aging Period”, Electric Power System Research, Vol. 78, No. 10, pp. 1686–1692 October 2008.
  67. Adedayo Otunola; Ayman EL-Hag, Shesha Jayaram and William A. Anderson “Effectiveness of Pulsed Electric Fields in Controlling Microbial Growth in Milk” International Journal of Food Engineering , Vol. 4, No. 7, August 2008, Article 1.
  68. A.M. Gaouda, A. H. El-Hag, T.K. Abdel-Galil, M. M. A. Salama  and  R. Bartnikas, “On-Line Detection and Measurement of Partial Discharge Signals in a Noisy Environment” IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 15, No. 4, August 2008, pp. 1162-1173.
  69. Majid Sanaye-Pasand, Ali Naderian, A. H. El-Hag and S. Jayaram “Comparison of Available Silicone Rubber Coatings for High Voltage Applications” International Journal of Emerging Electric Power Systems, Vol. 9, No. 1, January 2008, Article 1, pp. 1-14.
  70. A.H. El-Hag, S. Jayaram & E.A. Cherney “Effect of insulator profile on aging performance of silicone rubber insulators in salt-fog” IEEE Transaction on Dielectrics and Electrical Insulation Vol. 14, No. 2, April 2007, pp. 352-359.
  71. Ayman H. El-Hag, “Leakage current characterization for estimating the conditions of non-ceramic insulators’ surfaces” Electric Power System Research Vol. 77, March 2007, pp. 379-384.
  72. A. H. El-Hag, Z. Zheng, S. Jayaram and S. Boggs, “Effect of Pore Size on the Calculated Pressure at Biological Cells Pore Wall” IEEE Transactions on nano-bio science, Vol. 5,  No. 3,  Sept. 2006 pp. 157 - 163
  73. A. H. El-Hag, S. Jayaram and M.W. Griffiths “Inactivation of Naturally Growing Microorganisms using Pulsed Electric Field” IEEE Transactions on Plasma science Vol. 34, No .4, August, 2006, pp. 1412-1415.
  74. Ali Naderian, A. H. El-Hag, S. Jayaram & E. A. Cherney “A novel method for leakage current prediction of polymeric insulators” Power Engineering Letters, IEEE Transactions on Power Delivery, Vol. 21, No. 1, January 2006, pp. 506-507.
  75. A.H. El-Hag, L.C. Simon, S. Jayaram & E.A. Cherney “Erosion Resistance of Nano-filled Silicone Rubber”, IEEE Transactions on Dielectrics and Electrical Insulation, Vol. 13, No. 1, February 2006, pp. 122-128.
  76. A.H. El-Hag “A new technique to detect dry-band arcing”, Power Engineering Letters, IEEE Transaction on Power Delivery, Vol. 20, No. 2, April 2005, pp. 202-1203.
  77. S. Jayaram, A.H. El-Hag, F. Espino, R. J. Wong and C. Leibovitch, “Effects of Process and Product Parameters on High Voltage Nano Pulse Measurements” IEEE Transactions on Industry Applications, Vol. 41, No. 2, March/April 2005, pp520-526.
  78. A.H. El-Hag, S. Jayaram & E.A. Cherney “Influence of Shed Parameters on the Aging Performance of Silicone Rubber Insulators in Salt-Fog” IEEE Transaction on Dielectrics and Electrical Insulation, Vol. 10, No. 4, August 2003, pp. 655-664.
  79. A.H. El-Hag, S. Jayaram & E.A. Cherney “Fundamental and Low Frequency Harmonic Components of Leakage Current as a Diagnostic Tool to Study Aging of RTV and HTV Silicone Rubber in Salt-Fog” IEEE Transaction on Dielectrics and Electrical Insulation, Vol. 10, No. 1, February 2003, pp. 128-136.
  80. Aiman Al-Haj & Ibrahim El-Amin “factors that influence transformer no-load current harmonics”, IEEE Transactions on Power Delivery, Vol. 15, No. 1, January 2000, pp. 163-166.

Standards

Refereed Conference Papers
  1. Basharat Mehmood, Refat Ghunem, Ayman El-Hag, Mohammad K. Hassan, Leena Al-Sulaiti and Ahmed Abdala, “Assessment of ATH-Filled Silicone Rubber Under DC Dry Band Arcing”, 24th International Middle East Power Systems conference, MEPCON 2023, Mansoura University, Mansoura, Egypt, December 19-21, 2023.
  2. Farook Mustafa and Ayman El-Hag, “Hydrophobicity Classification of RTV Silicone Rubber Coated Insulator using Deep Learning Algorithms”, 23rd International Symposium on High Voltage Engineering, ISH 2023, Glasgow, Scotland, UK 28 August – 1 September 2023, pp. 1089-1092.
  3. Celal Fadil Kumru, Abdulla Lutfi, Ayman El-Hag, Ahmad Darwish, Shady S. Refaat, Haitham Abu-Rub, “A Study on the Ability of Different Non-Intrusive Sensors for Diagnosing Outdoor Insulator Defects”, IEEE Electrical Insulation Conference, Quebec City, Quebec, Canada, June 18-22, 2023, pp. 1-4.
  4. Hafiz M. Usman, Ramadan ElShatshat and Ayman H. El-Hag, “A Practical Approach for Distribution Transformer Loss of Life Assessment Considering Electric Vehicles Penetration”, 2023 IEEE PES General Meeting, accepted.
  5. Abdulla Lutfi and Ayman El-Hag, "Smart Monitoring of Outdoor Insulators", The 5th International Conference on Communications, Signal Processing, and their Applications, Cairo, Egypt, December 27-29, 2022, pp. 1-5.
  6. Abdulla Eyad Lutfi, Ayman El-Hag, Khaled Shaban, “Classification of Common Discharges in Outdoor Insulators Using Ultrasonic Signals”, IEEE CEIDP, Denver, Colorado, October 30 – November 2, 2022, pp. 523 - 526.
  7. Basharat Mehmood, Refat Ghunem, Ayman El-Hag, Mohammad K. Hassan, Leena Al-Sulaiti and Ahmed Abdala, “Effect of Voltage Level on the Performance of Silicone Rubber in the Inclined Plane Tracking and Erosion Test”, IEEE CEIDP, Denver, Colorado, October 30 – November 2, 2022, pp. 515 – 518.
  8. Hafiz M. Usman, Ramadan ElShatshat and Ayman H. El-Hag, “Behind-the-Meter Solar Generation Disaggregation via Universal Adaptive Stabilization”, 2022 IEEE PES General Meeting, Denver, USA, July 17-21, 2022, pp. 1-5.
  9. Ahmad Darwish, Ayman H. El-Hag, Shady S. Refaat, Haitham Abu-Rub and Hamid A. Toliyat, “Impact of Dimensionality Reduction Techniques on the Classification of Ceramic Insulators Defects” IEEE CEIDP, virtual conference, 12-15 Dec. 2021, pp. 243-246.
  10. Hafiz M. Usman, Ramadan ElShatshat and Ayman H. El-Hag, “Distribution Transformer kVA Load Estimation Using Smart Meter Data”, 2021 IEEE Electrical Power and Energy Conference (EPEC), virtual conference, October 22-24 and Oct. 30-31, 2021, pp. 149-153.
  11. Michael Cooper-Stachowsky and Ayman El-Hag, “Experience Teaching Circuit Courses to Civil Engineers”, Conference Proceedings 2021 Canadian Engineering Education Association (CEEA-ACEG21), University of Prince Edward Island; June 21 – 23, 2021, pp. 1-4.
  12. Mohammad Hakami, Ayman El-Hag, and Shesha Jayaram, “Effects of Corona Discharges on Silicone Rubber Samples under Severe Weather Conditions”, IEEE Electrical Insulation Conference (EIC 2021), virtual conference, 2021, June 7 – June 28, 2021, pp. 500-503.
  13. Yehia Fahmy and Ayman El-Hag, “Application of Convolution Neural Network in Hydrophobicity Classification”, 2021 IEEE Electrical Insulation Conference (EIC 2021), virtual conference, June 7 – June 28, 2021, pp. 504-507.
  14. Ramanpreet K. Brar and Ayman H. El-Hag, “Application of Machine Learning in Discharge Classification”, IEEE CEIDP, virtual conference, October 18-30, 2020, pp. 43-46.
  15. Khadija K. Khanum, Refat Ghunem, and Ayman El-Hag, “Thermal Characteristics of Various Silicone Rubber Composites Filled with Silica”, IEEE CEIDP, virtual conference, October 18-30, 2020, pp. 31-34.
  16. Neha Bhatia, Ayman H. El-Hag and Khaled Shaban, “Machine Learning-based Regression and Classification Models for Oil Assessment of Power Transformers”, IEEE International Conference on Informatics, IoT, and Enabling Technologies (ICIoT’20), Doha, Qatar, February 2-5, 2020, pp. 400-403.
  17. A. Muhammad, A. Shahpurwala, S. Mukhopadhyay and A. H. El-Hag, “Autonomous Drone-Based Powerline Insulator Inspection via Deep Learning”, Robot 2019: Fourth Iberian Robotics Conference, Porto, Portugal, November 2019, pp 52-62.
  18. Daouda Kone, Ladji Cisse, Refat A. Ghunem, Yazid Hadjadj, Ayman H. El-Hag and Kashif N. Bangash, “Suppression of Dry-Band Arcing Erosion by Silica Filler in Silicone Rubber Composites”, IEEE CEIDP, Cancun – Mexico, 21-24 October, 2018, pp. 251-254.
  19. Satish Kumar Polisetty, Shesha Jayaram, and Ayman El-Hag, “Enhancing Partial Discharge Classification Using Acoustic Signals and Artificial Neural Networks”, ESA/ IESJ / IEEE-IAS joint meeting, Boston, USA on June 18-20, 2018.
  20. Ismail Patel, Issam Maarouf, Sohil Soltan, Ahmad Saad, Anwar Al-Taher, Ayman El-Hag and Khaled Assaleh, “Image Processing Based Estimation of Ceramic Insulator Pollution Levels”, 5th Electric Power and Energy Conversion Systems (EPECS 18), Kitakyushu, Japan, 23-25 April, 2018.
  21. Nameer Al Khafaf and Ayman H. El-Hag, “Prediction of Leakage Current Peak Value”, 11th International Symposium on Mechatronics and its Applications, Sharjah, United Arab Emirates, March 4-6, 2018.
  22. Alhaytham Y. Alqudsi and Ayman El-Hag, “A Cost Effective Artificial Intelligence based Transformer Insulation Health Index”, 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON), IIT Ropar, India, November 16-18, 2017, pp. 108-111.
  23. Ayman El-Hag, Shayok Mukhopadhyay, Kamil Al-Ali, and AbdulRahman Al-Saleh, “An Intelligent System for Acoustic Inspection of Outdoor Insulators”, 3rd International Conference on Condition Assessment Techniques in Electrical Systems (CATCON), IIT Ropar, India, November 16-18, 2017, pp. 128-131.
  24. Refat Atef Ghunem, Ayman H. El-Hag, Yazid Hadjadj and Edward A. Cherney, “A Study on the Effect of Inorganic Fillers on the Dry-Band Arcing Erosion of Silicone Rubber Composites”, IEEE CEIDP, Texas, USA, 22-25 October, 2017, pp. 664-667.
  25. Ramy Hussein, Khaled Bashir Shaban and Ayman H. El-Hag, “Robust Detection of Acoustic Partial Discharge Signals in Noisy Environments”, 2017 International Instrumentation and Measurement Technology Conference, Torino, Italy, May 22-25, 2017.
  26. Heba Abu Sharbain, Ahmed Osman, and Ayman El-Hag. "Detection and Identification of Ferroresonance." the Seventh International Conference on Modeling, Simulation and Applied Optimization, ICMSAO'17, Sharjah, UAE, April 4-7, 2017.
  27. Ruba Alkadi, Abdelrahman Shaath, Firas Gefe, Sana Jaber, Nadin Al Rayes, Ayman H. El-Hag, and Nasser Qaddoumi, “Smart Antenna-Based Partial Discharge Detection and Classification System”, “16th Mediterranean Microwave Symposium (MMS2016), Abu Dhabi City – UAE, 14-16 November, 2016.
  28. Kamel Benhmed, Khaled Bashir Shaban and Ayman El-Hag, “Estimating Transformers Health Index using Artificial Intelligent Techniques”, GCC Power 2016 Conference & Exhibition, Doha - Qatar, 08-10 November 2016, pp. 466-471.
  29. Yomna Shaker and Ayman El-Hag, “Experience with Acoustic Sensors in Partial Discharge Detection”, IEEE CEIDP, Toronto, Canada, 16-19 October, 2016, pp. 195-198.
  30. Abdelrahman Khaled, Ayman El-Hag and Khaled Assaleh, “Equivalent Salt Deposit Density Prediction of Outdoor Polymer Insulators during Salt Fog Test”, IEEE CEIDP, Toronto, Canada, 16-19 October, 2016, pp. 786-789.
  31. Refat Ghunem, Li-Lin Tay and Ayman H. El-Hag, “Raman Spectroscopy of 200 kV and 400 kV Service Aged Silicone Rubber Insulation in the Gulf Region”, IEEE CEIDP, Toronto, Canada, 16-19 October, 2016, pp. 810-813.
  32. Yomna Shaker, Abdalmonam Zahed and Ayman El-Hag, “Experience with Acoustic Sensors in Partial Discharge Detection”, 2016 IEEE International Conference on High Voltage Engineering and Application (ICHVE 2016), Chengdu, China, September 19-22, 2016.
  33. Hocine Terrab, Abdelhafid Bayadi and Ayman El-Hag, “A Fuzzy Logic Based Approach to Evaluate the Surface Conditions of Ceramic Outdoor Insulators”, 4th International Conference on Electrical Engineering (ICEE’2015), Boumerdes, Algeria, 13-15 December, 2015.
  34. Wasim Al-Masri, Mamoun F. Abdel-Hafez and Ayman El-Hag, “A Multi-hypothesis Sequential Probability Test for Partial Discharges Localization in Power Transformers”, 10th International Symposium on Mechatronics and its Applications, Sharjah, United Arab Emirates, December 8-10 , 2015.
  35. Hocine Terrab, Ayman El-Hag and Abdelhafid Bayadi, “Characterization of Leakage Current on the Surface of Porcelain Insulator under Contaminated Conditions”, 4th Electric Power and Energy Conversion Systems (EPECS 15), Sharjah, United Arab Emirates, 24-26 November, 2015.
  36. Abdalmonam H. Zahed, Mustafa M. Harbaji, Shahed A. Habboub, Maryam A. AlMajidi, Mustafa J. Assaf, Ayman H. El-Hag, and Nasser N. Qaddoumi, “Design of Hilbert Fractal Antenna for Partial Discharge Detection and Classification”, Electric Power and Energy Conversion Systems (EPECS 15), Sharjah, United Arab Emirates, 24-26 November, 2015.
  37. Hocine Terrab, Ayman El-Hag  and Abdelhafid Bayadi, “Surface Analysis of Field Aged Transmission Class Silicone Rubber Outdoor Insulators”, IEEE CEIDP, Ann Arbor, MI, USA, 18-21 October, 2015, pp. 213-216.
  38. Ramy Hussein, Khaled Bashir Shaban and Ayman H. El-Hag, “Acoustic Partial Discharge Signal Denoising using Power Spectral Subtraction”, IEEE CEIDP, Ann Arbor, MI, USA, 18-21 October, 2015, pp. 330-333.
  39. Shaharyar Anjum, Ayman El-Hag, Shesha Jayaram, and Ali Naderian, “Radio Frequency (RF) based Field Inspection of Porcelain Insulators”, paper submitted to International Conference on the Properties and Applications of Dielectric Materials. ICPADM, July 19 – 22, 2015 – UNSW (University of New South Wales), Sydney, Australia.
  40. Ibrahim Jarrar, Khaled Assaleh and Ayman H. El-Hag, “Utilizing Digital Image Processing Techniques to Evaluate the Condition of Non-Ceramic Insulators”, the 2015 2nd International Conference on Communications, Signal Processing, and their Applications, February 17–19, Sharjah, United Arab Emirates.
  41. Ramy Hussein and Khaled Bashir Shaban and Ayman H. El-Hag, “'Histogram-based Thresholding in Discrete Wavelet Transform for Partial Discharge Signal Denoising”, the 2015 2nd International Conference on Communications, Signal Processing, and their Applications, February 17–19, Sharjah, United Arab Emirates.
  42. Shaharyar Anjum, Shesha Jayaram, Ayman El-Hag, and Ali Naderian, “Classification of types of defects in ceramic insulators using partial discharge signatures extracted from RF signals” IEEE CEIDP, IOWA, USA, 19 Oct - 22 Oct 2014.
  43. Shaharyar Anjum, Ayman El-Hag, Ali Naderian and  Shesha Jayaram, “Condition Monitoring System For Ceramic Insulator Defects Based on Their Radio Frequency (RF) Signatures”, the International Conference on Condition Monitoring and Diagnosis 2014 (CMD2014), Jeju Island, Korea, September 21-25, 2014, pp. 131-134.
  44. Ibrahim Jarrar, Khaled Assaleh and Ayman H. El-Hag, “Using the Gray Level Co-occurrence Matrix to Improve the Swedish Hydrophobicity Class System”, the International Conference on Condition Monitoring and Diagnosis 2014 (CMD2014), Jeju Island, Korea, September 21-25, 2014, pp. 135-138.
  45. Mohsen B. Ashtiani, S. Mohammad Shahrtash, Ayman El-Hag and Khaled Shaban, “Comparison between Different De-noising Techniques for Acoustic Partial Discharge Signals”, the International Conference on Condition Monitoring and Diagnosis 2014 (CMD2014),  Jeju Island, Korea, September 21-25, 2014, pp. 962-965.
  46. Refat Ghunem, Ayman El-Hag and Shesha Jayaram, “Investigation on Field-Aged RTV-Coated Bushings and Silicone Rubber Insulators in the Gulf Region”, the International Conference on Condition Monitoring and Diagnosis 2014 (CMD2014),  Jeju Island, Korea, September 21-25, 2014, pp. 294-297.
  47. Kamel Benhmed, Khaled Bashir Shaban and Ayman El-Hag, “Cost Effective Assessment of Transformers Using Machine Learning Approach”, 2014 IEEE Innovative Smart Grid Technologies Conference - Asia (ISGT ASIA), Kuala Lumpur, Malaysia, 20 – 23 May 2014.
  48. Yousef El Haj, Lutfi Albasha, Ayman El-Hag and Hasan Mir, “Feasibility of Data Communication through Distribution Transformers for Smart Grid Applications”, 2014 IEEE Innovative Smart Grid Technologies Conference - Asia (ISGT ASIA), Kuala Lumpur, Malaysia, 20 – 23 May 2014.
  49. Ayman H. El-Hag, Ahmed Gaouda, Shesha Jayaram and Saeed Ul-Haq, “Detecting Machine Turn Insulation Failure Using Ground Current Signature” the IEEE First International Conference on Condition Assessment Techniques in Electrical Systems (IEEE CATCON2013), Kolkata, India, December 6-8, 2013.
  50. Mustafa Harbaji, Ayman El-Hag and Khaled Shaban, “Partial Discharge Type Classification Using Acoustic System”, Electric Power and Energy Conversion Systems (EPECS 13), Istanbul, Turkey, October 2-4, 2013.
  51. Ayman H. El-Hag, Nasser Qaddoumi, Rida Mourtada, Esam Al Murawwi, Ahmad Nimer, Kamal AlMazam, Mohammed Hirzallah and AbdelRahim Huwair, “Multi-Purpose RF Antenna for Partial Discharge and Oil Quality Monitoring”, Electric Power and Energy Conversion Systems (EPECS 13), Istanbul, Turkey, October 2-4, 2013.
  52. Esam Al Murawwi, Alip Mohammed, Ayman El-Hag and Zapaer Alip, “Optimization of Corona Ring Design for a 400KV Non-Ceramic Insulator”, IEEE Electrical Insulation Conference (EIC 2013), Ottawa, Canada, June, 2-5, 2013.
  53. Loai Khalayli, Hamid Al Sagban, Hossam Shoman, Khaled Assaleh and Ayman El-Hag, “Automatic Inspection of Outdoor Insulators using Image Processing and Intelligent Techniques” IEEE Electrical Insulation Conference (EIC 2013), Ottawa, Canada, June, 2-5, 2013.
  54. Yomna Shaker, Ayman El-Hag and Shesha Jayaram, “Electro-Thermal Modeling of MV Cable Termination using Finite Elements Technique”, IEEE CEIDP, Montreal, Canada, October 14-17, 2012, pp. 459-462.
  55. Sally Rotby, Ayman H. El-Hag, M. M. A. Salama and R. Bartnikas, “Partial Discharge Detection and Localization inside Power Transformer”, IEEE CEIDP, Montreal, Canada, October 14-17, 2012, pp. 84-87.
  56. Refat Atef Ghunem, Khaled Bashir Shaban, Ayman Hassan El-Hag, and Khaled Assaleh, “Towards Cost-effective Maintenance of Power Transformer by Accurately Predicting its Insulation Condition”, the Electrical Power and Energy Conference (EPEC 2012), London, Canada, October 10-12, 2012, pp. 111-116.
  57. Mohammed Al Zaabi, Mohammed Qasim, Muaz Salah, Ayman El-Hag and Aydin Yesildirek, “A Cost Effective Trigger Circuit for an On-line Multi-sensor Partial Discharge Monitoring System”, IEEE International Symposium on Electrical Insulation (ISEI), San Juan, Puerto Rico, June 10-13, 2012, pp. 104 - 107.
  58. Ibrahim Y. Shurrab, Ayman Al-Hag and Khaled Assaleh, “Partial Discharge On-Line Monitoring of Outdoor Insulators”, IEEE International Symposium on Electrical Insulation (ISEI), San Juan, Puerto Rico, June 10-13, 2012, pp. 391 - 394.
  59. M. Qasim, S. Hoda, M. Al Zaabi, N. Mahdi, G. Gopakumar, S. Abu Rahma, Ayman El-Hag and Aydin Yesildirek, “Remote Monitoring of Power System Apparatus in the Context of Smart Grid”, the 8th International Symposium on Mechatronics and its Applications (ISMA12), Sharjah, UAE, April 10-12, 2012.
  60. Nasser Qaddoumi, Ayman H. El-Hag and Yasser Saker, “Near-Field Microwave Testing Method for Outdoor Insulators Using Artificial Neural Network” International Conference on Electromagnetic Near-Field Characterization and Imaging (ICONIC) Rouen, France, November 30 – December 02, 2011.
  61. Esam Al Murawwi and Ayman El-Hag, “Corona Ring Design for a 400 kV Non-Ceramic Insulator”, the 2nd Electric Power and Energy Conversion Systems conference (EPECS 2011), Sharjah, United Arab Emirate, November 15-17, 2011.
  62. A. Swedan , A. H. El-Hag and K. Assaleh, “Enhancement of Acoustic Based Partial Discharge Detection Using Pattern Recognition Techniques”  the 2nd Electric Power and Energy Conversion Systems conference (EPECS 2011), Sharjah, United Arab Emirate, November 15-17, 2011.
  63. A. M. Gaouda, Farag Sallabi, A. H. El-Hag and M.M.A. Salama, “Zigbee Performance During Severe Interruptions in Electric Power Systems”, the 11th International Conference IEEE EPQU Lisbon, 17 to 19 October 2011.
  64. Utkarsh Patel, Shesha H. Jayaram and Ayman El-Hag, “Analysis of Cable Termination under Power Frequency and High Frequency Voltages”, 2011 IEEE CEIDP, Cancun, Mexico, October 16-19, 2011, pp. 288 – 291.
  65. A. R. Al-Ali, Ayman El-Hag, Mujib Bahadiri, Mustafa Harbaji and Yousef Ali El Haj, “Smart Home Renewable Energy Management System”” the IEEE International Conference on Smart Grid and Clean Energy Technologies,  27-30 September 2011, Chengdu, China.
  66. Ayman El-Hag, Ahmed Gaouda and Shesha Jayaram, “A Novel Technique to Detect AC Machine Turn Insulation Failure Subjected to Steep Front Impulse Waveform” the International Conference on Power Systems Transients, Delft, Netherlands, June 14-17, 2011.
  67. Utkarsh Patel, Shesha H. Jayaram and Ayman El-Hag, “MV Cable Termination Failure Assessment in the Context of Increased Use of Power Electronics” Electrical Insulation Conference (EIC), Annapolis, Maryland, United States, June 5-8, 2011, pp. 418 - 422.
  68. Robert Allan, Shesha Jayaram, Ayman El-Hag and Paul McGrath, “Conductive Composite Material for Wet ESP Applications” the XII International Conference on Electrostatic Precipitation, Nuremberg, Germany,  May, 9th – 11th, 2011.
  69. A. R. Al-Ali, A. H. El-Hag, R.  Dhaouadi and A.  Zainaldain, “Smart Home Gateway for Smart Grid” the Seventh International Conference on Innovations in Information Technology, Abu Dhabi, United Arab Emirates, April 25-27, 2011, pp. 90 - 93.
  70. Fadi Aloul, Imran Zualkernan, Ayman El-Hag, Ghaleb Husseini and Yousef Al-Assaf, “A Case Study of a College-Wide First Year Undergraduate Engineering Course” IEEE Engineering Education 2011, Amman, Jordan, April, 04-06 2011, pp. 179-184.
  71. Omniyah Noory  and Ayman H. El-Hag, “Biological Cell Electroporation Using Nanosecond Electrical Pulses”, the first Middle East Conference on Biomedical Engineering (MECBME’11), Sharjah, UAE, Feb. 22-25, 2011, pp. 28 - 31.
  72. Ibrahim Marwan Jarrar, Ayman El Hag and Nasser Qaddoumi, “Online Techniques to Detect Defects in Non-Ceramic Insulators (NCI)” the GCC cigre meeting, Doha, Qatar, November, 2010.
  73. A.H. El-Hag, S. H. Jayaram, O. Rodriguez  and M. W. Griffiths, “A performance study of a multi-level electrode treatment chamber for food processing” Annual Meeting of the IEEE Industry Applications Society (IAS 2010), October 3-7, 2010, Houston, Texas, USA.
  74. Refat Atef Ghunem, Ayman H. El-Hag, Khaled Assaleh, Fatima Al Dhaheri, “Prediction of furan content in transformer oil using ANN”, IEEE International Symposium on Electrical Insulation (ISEI), San Diego, California, June 6-9, 2010.
  75. Refat Atef Ghunem, Ayman H. El-Hag, Khaled Assaleh and Fatima Al Dhaheri, “Estimating Transformer Oil Parameters Using Artificial Neural Networks” Electric Power and Energy Conversion Systems conference (EPECS 2009), Sharjah, United Arab Emirate, November 10-12, 2009.
  76. Khaled Shaban, Ayman H. El-Hag and Andrei Matveev, “Predicting Transformers Oil Parameters”, Electrical Insulation Conference (EIC), Montréal, Québec, Canada, 1-3 June 2009, pp. 196-199.
  77. Nasser Qaddoumi, Ayman H. El-Hag, Mohamed Al Hosani, Ibrahim Al Mansouri and Hamad Al Ghufli, “Detecting Damages in Outdoor Non-Ceramic Insulators Using Near Field Microwave Non-Destructive Testing” Electrical Insulation Conference (EIC), Montréal, Québec, Canada, 1-3 June 2009, pp. 64-66.
  78. Ayman El-Hag, Yara Fayyad, Arwa Saeed and Ahmed Khairi, “Comparison between Resistively and Capacitively Graded 28-kV Cable Splice” the Third International Conference on Modeling, Simulation, and Applied Optimization, Sharjah, UAE January 20-22, 2009.
  79. A.M. Gaouda, A. H. El-Hag and S. H. Jayaram, “Detection of Discharge Activities during the Pulsed Electric Field Food Processing using Wavelet Transform” Annual Meeting of the IEEE Industry Applications Society (IAS 2008), October 5-9, 2008, Edmonton, Alberta, Canada.
  80. A.H. El-Hag, S. H. Jayaram, M. W. Griffiths and R. Dadarwal, “Survivability of inoculated versus naturally grown bacteria in liquid foods under Pulsed Electric Fields” Annual Meeting of the IEEE Industry Applications Society (IAS 2008), October 5-9, 2008, Edmonton, Alberta, Canada.
  81. Ayman El-Hag and Shesha Jayaram, “Effect of Biological Cell Size and Shape on Killing Efficiency of Pulsed Electric Field” the International Conference on Dielectric Liquids (ICDL), Poitiers-France, from June 30th–July 4th, 2008.
  82. Ayman EL-Hag, Adedayo Otunola, Shesha Jayaram and William A. Anderson, “Reduction of Microbial Growth in Milk by Pulsed Electric Fields”, the International Conference on Dielectric Liquids (ICDL), Poitiers-France, June 30th–July 4th, 2008.
  83. Ali Abdollahian, Ayman H El-Hag, Ali Naderian Jahromi, Majid Sanaye-Pasand and Gholamabas Ranjbar, “A Study on the Aging Characteristics of RTV Insulator Coatings”, the 21st  Canadian Conference on Electrical and Computer Engineering, Niagara Falls, Ontario, Canada, May 4-7, 2008.
  84. Khaled Assaleh and Ayman El-Hag, “Estimating Transformer Oil Parameters Using Polynomial Networks” International Conference on condition monitoring and diagnosis, Beijing, China, 11-14, April, 2008.
  85. A.M. Gaouda, A. H. El-Hag, & M. M. A. Salama, “Partial Discharge Monitoring in a Noisy Environment” International Conference on condition monitoring and diagnosis, Beijing, China, 11-14, April, 2008, pp. 1048 - 1051.
  86. A. H. El-Hag, “Experience with Aging Tests for Testing of Non-Ceramic Insulators” the 4th IEEE-GCC conference that was held in Bahrain from 11-14, October, 2007.
  87. A. H El-Hag, A. N. Jahromi, and S. Jayaram, “Aging Performance of ATH based RTV Insulator Coatings” IEEE International Conference on Solid Dielectrics, 8th-13th July, Winchester, Hampshire, UK, 2007, pp. 172-175.
  88. A. H. El-Hag, S. Ul-Haq, S. Jayaram and E. A. Cherney, “Improving the Erosion Resistance of Electrical Insulating Materials using Nano Fillers” American Institute of Physics proceeding of the Sharjah first international conference on Nanotechnology and its applications, April 10-12, 2007, pp. 209-214.
  89. Ali Naderian, Majid Sanaye-Pasand, Hosein Mohseni, Saleh Moonesan, Ayman H. El-Hag, Edward Cherney, Shesha Jayaram and  Gholamreza Jalali, “Performance Investigation of HV Insulators Coated by Silicon Rubber”, 21st International Power Conference, 2006, pp. 953-960.
  90. A. N. Jahromi, A. H. El-Hag, E. A. Cherney and S. Jayaram, “Effect of Acid Immersion on RTV Silicone Rubber Coatings in Inclined Plane Tests” 41 International Universities Power Engineering Conference,  Northumbria University, Newcastle, UK between September 6-8 2006. 
  91. A. H. El-Hag, F. Espino, O. Adedayo and S. Jayaram, “Water Processing by High Intensity Pulsed Electric Fields”, 2006 IEEE CEIDP Kansas City, Missouri,  USA, October 15-18, 2006.
  92. M. I. Marei and A. H. El-Hag “Design Considerations of Pulse Power Supply for Food Pasteurization Application” Proceeding of the ESA/ IEJ / IEEE-IAS joint meeting, Berkley, USA on June 6-9, 2006, pp. 366-374.
  93. A. H. El-Hag, S. Boggs and S. H. Jayaram, “Calculation of Temperature Rise due to the Application of Pulsed Electric Fields in the Context of Food Sterilization” Proceeding of the ESA/ IEJ / IEEE-IAS joint meeting, Berkley, USA on June 6-9, 2006, pp. 261-268.
  94. T. K. Abdel-Galil, A. H. El-Hag, M. M. A. Salama, and R. Bartnikas “Enhanced Partial Discharge De-noising Technique using Eigen-Decomposition.” IEEE International Symposium on Electrical Insulation, Toronto, Canada, June 11 – 14, 2006, pp. 294-297.
  95. Ali Naderian, A. H. El-Hag, S. Jayaram and E. Cherney “Effect of acid immersion on RTV silicone rubber coatings in inclined plane tests” CEIDP 2005, Nashville, Tennessee, USA on October 16-19, 2005, pp. 313-316.
  96. Ali Naderian, A. H. El-Hag, S. Jayaram and E. Cherney, “Prediction of Non-Ceramic Insulators Leakage Current in Salt Fog Test Using Neural Network” CEIDP 2005, Nashville, Tennessee, USA on October 16-19, 2005, pp. 309-312.
  97. A. H. El-Hag, S. Jayaram and M.W. Griffiths, “Inactivation of Naturally Grown Microorganisms in Orange Juice Using Pulsed Electric Fields” Fourth International Symposium on Non-thermal Medical/Biological Treatments Using Electromagnetic Fields and Ionized Gases, Portland, OR, May 15-18, 2005, pp. 73-79.
  98. J. Grenier, S.H. Jayaram, A. H. El-Hag, and M. Kazerani, “A study on effect of medium conductivity on its electric strength under different electrode geometries in nanosecond regimes” International Conference on Dielectric Liquids (ICDL), Portugal, June 26- July 1, 2005, pp. 261-264.
  99. A. H. El-Hag, Z. Zheng, S. Jayaram and S. Boggs, “Effect of Dielectric Saturation of Water on Transmembrane Potential in Biological Cells” International Conference on Dielectric Liquids (ICDL), Portugal, June 26- July 1, 2005, pp. 445-448.
  100. A.H. El-Hag, “Detection of dry-band arcing using time series modeling”. 2004 CEIDP, Boulder, USA, 17-21 October, 2004, pp. 615-618.
  101. A.H. El-Hag, S Jayaram and E.A. Cherney, “Physicochemical properties of silicone rubber nanocomposites for outdoor applications”. 2004 CEIDP, Boulder, USA, 17-21 October, 2004, pp. 688-691.
  102. A.H. El-Hag, S Jayaram and E.A. Cherney, “Comparison between micro and nano filled silicone rubber composites using inclined plane tracking and erosion test”. 2004 CEIDP, Boulder, USA, 17-21 October, 2004, pp. 385-388.
  103. A.H. El-Hag, S. Jayaram and E.A. Cherney, “Calculation of the current density along insulator surface using field and circuit theory approaches ”, 2003 CEIDP, Albuquerque, USA, 19-22 October, 2003, pp. 375-378.
  104. F. P. E. Cortes, A.H. El-Hag S. Jayaram, C. Leibovitch, and R. J. Wong “Effects of Process and Product Parameters on High Voltage Fast Pulse Measurements” ESA-IEEE joint meeting on electrostatics, Arkansas, USA, 24-27 June, 2003, pp. 498-509.
  105. A. H. El-Hag, S. Jayaram and E.A. Cherney, “Effect of Shed Design on Aging Performance of Silicone Rubber Insulators” 2002 CEIDP, Cancun, Mexico, October 20-24, 2002, pp. 363-366.
  106. A.H. El-Hag, S. Jayaram and E.A. Cherney, “Use of Harmonic Components as a Signature to Detect Arcing with HTV Silicone Rubber in Salt Fog” IEEE International Symposium on Electrical Insulation, Boston, USA, April 7 – 10, 2002, pp. 212-215.
  107. A.H. El-Hag, S. Jayaram and E.A. Cherney, “Low Frequency Harmonic Components of Leakage Current as a Diagnostic Tool to Study the Aging of Silicone Rubber Insulators” 2001 CEIDP, Waterloo, Canada, 14-17 October, 2001, pp. 597-600.
  108. A.H. El-Hag, S. Jayaram and E.A. Cherney, “Design Parameters of Weathersheds that Affect the Ageing of Polymer Insulators in Salt-Fog” 2001 IEEE PES Summer Meeting, Vancouver, Canada, 15-19 July, 2001, pp. 530-534.
  109. A.H. El-Hag, S. Jayaram and M.M.A. Salama, “Modeling Transformer Core Non-Linearity”, North American Power Symposium (NAPS) University of Waterloo, Canada, October 23-24, 2000, pp.14-7:14-9.
  110. A.H Al-Haj and Ibrahim El-Amin “Factors that Influence Transformer no-load Current Harmonics”, University Power Engineering Conference, Manchester, UK, 1997, pp. 125-128.
  111. A.S. Farag, M.M. Dawoud, A. Al-Haj, M. Lahloub, T.C. Cheng, Y. Du, “Urban Substations Magnetic Field Shielding in Saudi Arabia”, ISH’97 (10th International Symposium on High Voltage Engineering), Aug. 25-29, 1997, Montreal, Canada, Conference Proceedings, Vol. 8, Paper # 3002.