List of Articles Investment theory Open Access Article Abstract Page Full-Text 1 - The Investigating of Exchange Rate Volatility Impact on Stock Market Price Efficiency and Optimization of Investment Portfolio Ashban Hassani Elnaz Entezar Open Access Article Abstract Page Full-Text 2 - A study of Financing Decisions and Capital Structure in Real Investment Reza Aghajan Nashtaei Ebrahim Chirani Mehrdad Goodarzvand Chegini Open Access Article Abstract Page Full-Text 3 - Study of Factors Affecting Investment and Ways of Securing Liquidity:Case Study of Rural Cooperatives in Fars Province B. Najafi M.H. Tarazkar A. Shirvanian