List of Articles چرخ زنجیر Open Access Article Abstract Page Full-Text 1 - Comparison of the efficiency of artificial neural network and regression in predicting the skidding time of steel-tracked skidder and agriculture tractor Najibeh Gilanipoor Akbar Najafi Hamid Arya Open Access Article Abstract Page Full-Text 2 - The weight optimization hub gas valve using a special machine removal Parviz Ghazviniyan