List of Articles Open Access Article Abstract Page Full-Text 1 - Validation of the professional development model for elementary school teachersAbstract Yaqoub Jahandeh jafar ghahremani hossein baghaei Open Access Article Abstract Page Full-Text 2 - Identifying and Prioritizing Factors Affecting the Probability of Social Security Retirement with the Delphi and Fuzzy Dimtel approach Jafar abrishambaf حسن قدرتی hosein panahian Meytham Arabzadeh Hossein jabbary Open Access Article Abstract Page Full-Text 3 - An Empirical Analysis of the Interrelationship between Copper Industry Output and Macroeconomic Indicators: A Simultaneous Equations System Approach Hossein Nouri Ali Salmanpour zonouz Sima Eskandari Sabzi MEHDI MORADI Open Access Article Abstract Page Full-Text 4 - Optimizing the investment stock portfolio by using algorithms Meta-heuristics of invasive weeds and cuckoos Navid Mahmoodzadeh maleki Heidar mohamadzadeh salteh Soliman Iranzadeh