M.  Jafari, S .Minaei, N. Safaie, F. Torkamani-Azar, " Introducing an Effective Method in Extracting Plants From Thermal Images", presented in the 10^th national congress on Biosystems Eng. & Mechanization, Mashhad, Iran, September, 2016.

M.  Jafari, S .Minaei, N. Safaie, F. Torkamani-Azar, " Thermal Observations of Rose Powdery Mildew and Gray Mold Diseases", presented in the 10^th national congress on Biosystems Eng. & Mechanization, Mashhad, Iran, September, 2016.

M.  Jafari, S .Minaei, N. Safaie, F. Torkamani-Azar, " Design and Development of a Machine Vision and Site-specific Spraying System for Detecting Rose Powdery Mildew and Gray Mold Diseases by Combing Thermal and Visible Images", presented in 2^nd National conference on Agricultural Mechanization and New Technologies, Ahvaz, Iran, May 2016.

M. Jafari, A. Hemmat, M. Sadeghi, R. Amirfattahi," Design and Development of a Variable-Rate Seeder: a Study of time response", presented in 10^th International Congress on Mechanization and Energy in Agriculture, Antalya- turkey, August 2008.

M. Jafari, A. Hemmat, M. Sadeghi, "Comparison of indexes in Evaluation of Seed Distribution Non-Uniformity from Metering Devices of a Grain Drill to be Used as a Variable Rate ", (presented in the 5^th national conference of Agricultural Machinery Engineering and mechanization, Mashhad, Iran, August 2008)

M. Jafari, A. Hemmat, M. Sadeghi, R. Amirfattahi , "Design, Development and Evaluation of A Control System to Change A Uniform-Rate Grain Drill to Variable-rate one"(presented in The 5^th national conference of Agricultural Machinery Engineering and mechanization, Mashhad, Iran, August 2008)

M. Jafari, A. Hemmat, M. Sadeghi. "Seed Uniformity of Metering Devices in a Grain Drill Used as a Variable-Rate Seeder", (presented in the International Conference on Agricultural Engineering & Industry Exhibition, Hersonissos- Greece, June 2008)

M. Jafari, A.Hemmat. "Integrating and Identifying of the Tractor Autosteering ". (presented to The third student conference of Agricultural Machinery Engineering, Shiraz, Iran, April 2007)

M. Jafari, A. Khorsandi, M. Sadeghi. "Determination of Moisture Content and Soil Electric Guidance by Capacitor Sensors". (presented in The third student conference of Agricultural Machinery Engineering, Shiraz, Iran, April 2007)