فهرس المقالات Azadeh Roustakiani المقاله 1 - An Improved Sentiment Analysis Algorithm Based on Appraisal Theory and Fuzzy Logic 10.7508/jist.2018.02.004 Azadeh Roustakiani Neda Abdolvand Saeideh Rajaei Harandi Journal of Information Systems and Telecommunication (JIST) , العدد 2 , السنة 6 , بهار 2018