List of Articles چرخه DMAIC Open Access Article Abstract Page Full-Text 1 - Evaluation and Improvement in Company Manufacturing Processes based on the Six-sigma Methodology Alireza Alinezhad Parviz Mohammadpour Nima Esfandiari Open Access Article Abstract Page Full-Text 2 - The six sigma and lean management Approaches in education parivash Jafari, sohrab Yazdani,