List of Articles reduction Open Access Article Abstract Page Full-Text 1 - A Comparative Study on Existing Techniques for Variable Reduction Including Factor Analysis, Principal Component Analysis, Correlation-Based Techniques, and Relief in Predicting the Risk of Stock Price Crash in Tehran Stock Exchange Hassan Mohammadi Alireza Zarei Soudani Open Access Article Abstract Page Full-Text 2 - Human Resource Planning by Using Markov Chains: Case Study of Islamic Azad University-Firouzkouh Branch ملیحه صحرایی