List of Articles Non-linear Open Access Article Abstract Page Full-Text 1 - Evaluation of Torsional Single Story Structure During Earthquake According to Canadian provision Seiyed Ali Haj Seiyed Taghia Masoud Ebrahimi Abdoulreza Sarvghad Moghadamc Open Access Article Abstract Page Full-Text 2 - Performance Evaluation of Viscoelastic and Friction Passive Damping System in Steel Structures Mohammad Taghi Kazemia Hosein Hoseini Open Access Article Abstract Page Full-Text 3 - Seismic Performance of Torsionally Stiff and Flexible Single Story Buildings Designed Based on Iranian Seismic Code(Standard 2800) Seiyed Ali Haj Seiyed Taghia A.S. Moghadam Open Access Article Abstract Page Full-Text 4 - A Comparison of Different Non-linear Numerical Models for Pier Shaft Interaction Analysis for study of the Seismic Performance of Bridges Shahriar TavousiTafreshi Amin Ghafooripour Seyed shahrum Jafari