Conservation-Dissipation Formalism for soft matter physics: I. Augmentation to Doi's variational approach Liangrong Peng, Yucheng Hu and Liu Hong Eur. Phys. J. E, 42 6 (2019) 73 Published online: 13 June 2019 DOI: 10.1140/epje/i2019-11847-2