A farewell message from the editor-in-chief
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论文评审过程：Received 15 December 2015, Revised 16 December 2015, Accepted 17 December 2015, Available online 1 February 2016, Version of Record 19 February 2016.
论文官网地址：https://doi.org/10.1016/j.ipm.2015.12.015
