List of Articles Trustful Open Access Article Abstract Page Full-Text 1 - The Model of Managers Competency on the Basis of Imam Ali's Nahjolbaleghah Parisa Ghorbannejad Ahmad Isakhani Open Access Article Abstract Page Full-Text 2 - Examining the Relationship between the Principals' Personality Characteristics and Their Effectiveness in Sarab Guidance and High Schools during 2004 – 2005 sadegh maleki avarsin Davood Moshkati Open Access Article Abstract Page Full-Text 3 - Developing the Supply Chain Management (SCM) Model and Using the Theory of Constraints (TOC) Rasol Hoji majid bagherzadeh khajeh