List of Articles Spanning Tree Open Access Article Abstract Page Full-Text 1 - Visualized Portfolio Optimization of stock market: Case of TSE Fatemeh Lakzaie Alireza Bahiraie saeed mohammadian Open Access Article Abstract Page Full-Text 2 - Tehran Securities Exchange's leading stocks in currency crisis: minimum spanning tree Mostafa Baratpour Ghodratollah Emamverdi Mahmoud Mahmoudzadeh Parvaneh Salatin Open Access Article Abstract Page Full-Text 3 - A New Proposed Clustering Method for Energy Efficient Routing in Wireless Sensor Networks Sara Nasirian Farhad Faghani Open Access Article Abstract Page Full-Text 4 - A Typology of Financial Networks According to Their Typological Characteristics (A Study of Tehran Stock Exchange) Majid Montasheri Hojjatollah Sadeqi Open Access Article Abstract Page Full-Text 5 - Analysis of Financial networks in Tehran Stock Exchange using the application of centrality measures Majid Montasheri Hojjatollah Sadeqi Open Access Article Abstract Page Full-Text 6 - SOLVING A STEP FIXED CHARGE TRANSPORTATION PROBLEM BY A SPANNING TREE-BASED MEMETIC ALGORITHM Saber Molla-Alizadeh-Zavardehi Masoud Sanei Reza Soltani Ali Mahmoodirad Open Access Article Abstract Page Full-Text 7 - Providing a Simple Method for the Calculation of the Source and Target Reliabili- ty in a Communication Network (SAT) S. Babaee E. Kheirkhah