Experimental and simulation studies on ELM characteristics under a plasma current ramping up discharge on EAST oleh Bang Li, Tingfeng Ming, Yanlong Li, Qiqi Shi, Rongjing Deng, Shanwei Hou, Xiaohe Wu, Yanjie Yang, Kaixuan Fan, Xiaoju Liu, Tianyang Xia, Qing Zang, Xiang Gao, GuoQiang Li