The stability of room mining coal pillars during their secondary mining for recovering coal was analyzed. An analysis was performed for the damage and instabili
This work investigates the performance of various forward error correction codes, by which the MIMO-OFDM system is deployed. To ensure fair investigation, the p
Product family (PF) is the most important part of product platform. A new method is proposed to mine PF based on multi-space product data in PLM database. Produ