1. Hui-Ming Wee, Yen-Deng Huang, Simon Wu and Yung-Lung Cheng (2014) “Replenishment policy with emergency purchase and partial backorder” 3rd International Conference on Management, Behavioral Sciences and Economics Issues (ICMBSE'2014) Singapore. Feb. 11-12.
2. Yung-Lung Cheng (2013)“Study the Optimal Inventory Strategy of A Single Supplies and Multiple Retailers with Deteriorating Item in Supply Chain”2013 International Conference on Business Expertise & Ethics, Taichung, Taiwan.April 26.
3. Guang-Jin Chen, Yung-Lung Cheng (2011)“Green Recycling Process of Innovation Management”2012 International Conference on Innovation Services(2012 ICIS), Taoyuan, Taiwan. December 20-21.
4. Hui-Ming Wee, Ping-Shun Chen, Yung-Lung Cheng (2011)“Green Supply Chain Innovation Recovery Inventory Model”2012 International Conference on Innovation Services(2012 ICIS), Taoyuan, Taiwan. December 20-21.
5. Hui-Ming Wee, Ping-Shun Chen, Yung-Lung Cheng (2010)“Green Supply Chain and Recovery Inventory Model”2010 Greening Optimization International Forum, Hsinchu, Taiwan. December 10-13.