List of Articles Artifact Open Access Article Abstract Page Full-Text 1 - Relation between Culture and Complexity of Organizational Structure A Case Study of IRIB Radio محسن قدمی اسماعیل مرزبان مینا قدمی Open Access Article Abstract Page Full-Text 2 - Study of the Stone Artifacts of Tepe Hissar, Damghan (4000-2000 BC) Hamid Amanollahi Open Access Article Abstract Page Full-Text 3 - New Strategy for Stopping Sifting Process during Bio-signals De-nosing By EMD: In Case of Low Frequency Artifact Reduction from ECG and EMG Mohammad Shahbakhti Elnaz Heydari Mohsen Naji Open Access Article Abstract Page Full-Text 4 - The Impact of Mediational Artifact Types on EFL Learners’ Writing Complexity: Collaboration vs. Asynchronous Artifacts Nasibe Bagherpour Mojgan Rashtchi Parviz Birjandi Open Access Article Abstract Page Full-Text 5 - Design of Low-Pass Filter of X-Ray Energy to Improve the Quality of Medical Imaging Sasan Soudi Bahareh Khaksar Jalali Hossein Eshghifard