فهرس المقالات یعقوب انصاری المقاله 1 - Identifying factors affecting energy waste in the production industry and providing a suitable model for energy efficiency and development of renewable energy in the production sector Amanolla Rahpeima Mohammad Bahrami seifabad یعقوب انصاری Roohalah Negahdari Nia Journal of System Management , العدد 42 , السنة 11 , بهار 2025