Dr. Yashvir Singh is presently working as an associate professor in the Department of Mechanical Engineering, Graphic Era Deemed to be University, Dehradun, Uttarakhand, India. He has more than 15 years of teaching experience. He has written more than 85 research articles and published in various peer reviewed journals. He is also reviewer and editorial board member of various journals. His specialization includes areas like tribology, biofuels, lubrication, manufacturing, etc. He published various research papers in reputed journals and also reviewed various articles of the journals. Dr. Nishant K. Singh is an associate professor at Hindustan College of Science and Technology, Mathura, Uttar Pradesh, India. He earned his PhD from IIT, Dhanbad, masters in Production Engineering and B. Tech in Mechanical Engineering, Delhi College of Engineering. He has written more than forty articles in well-known international journals and Serves as the Reviewer and Editorial Member in peer-reviewed Journals and Conferences. His research interests include tribology, micro-manufacturing and non-conventional machining processes. Dr. Mangey Ram received his Ph.D., major with Mathematics and minor in Computer Science from G. B. Pant University of Agriculture and Technology, Pantnagar in 2008. He is an editorial board member in many international journals. He has published 102 research publications in national and international journals of repute. His fields of research are Operations Research, Reliability Theory, Fuzzy Reliability, and System Engineering. Currently, he is working as a Professor at Graphic Era University.
