EDITOR IN CHIEF: Dr. Amulya Chandra Mandal Professor Department of Mathematics University of Dhaka, Dhaka-1000, Bangladesh. GUEST EDITORS: 1. Dr. Sidhartha Bhowmick Associate Professor Department of Mathematics Jagannath University, Dhaka-1100, Bangladesh. 2. Ms. Mili Saha Assistant Professor Department of English Jagannath University, Dhaka-1100, Bangladesh. 3. Dr. Goutam Saha Assistant Professor Department of Mathematics University of Dhaka, Dhaka-1000, Bangladesh. 4. Dr Md Sadek Ferdous Assistant Professor Department of Computer Science and Engineering Shahjalal University of Science and Technology, Sylhet 5. Dr. Ahmed Kadhim Hussein Assistant Professor Department of Mechanical Engineering University of Babylon, Babylon City, Hilla, Iraq. 6. Dr. Anamul Haque Sajib Assistant Professor Department of Statistics University of Dhaka, Dhaka-1000, Bangladesh. 7. Dr. Ahmed Abdul-Rida Yaseen Al-Waaly Lecturer Department of Mechanical Engineering College of Engineering Wasit University, Al-Kut, Wasit, Iraq. 8. Ms. Seema Paul Department of Sustainable Development, Environment Science and Engineering (SEED) KTH Royal Institute of Technology, SE - 10044 Stockholm, Sweden. 9. Nurul Mohammad Zayed Assistant Professor Department of Real Estate Faculty of Business and Entrepreneurship Daffodil International University, Dhaka, Bangladesh.