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By Jingzheng Ren. Dr Jingzheng Ren is currently an Assistant Professor of Process System Engineering at The Hong Kong Polytechnic University and an Adjunct Associate Professor of Engineering Operations Research for Sustainability Science at University of Southern Denmark.
When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.