1. Lixin, X., Danxia, S., Zhongyi, W.: Evaluation index system of consumer satisfaction for digital library knowledge service in the network environment. Libr. J. 34(3), 117 (2018)
2. Yingying, L., Juan, W., Chunhou, Z.: The construction of digital resources service evaluation index system in university libraries. J. Intell. 12(5), 167–172 (2017)
3. Chen, J., Shi, Y., Shi, S.: Noise analysis of digital ultrasonic nondestructive evaluation system. Int. J. Press. Vessel. Pip. 76(9), 619–630 (2017)
4. Xie, B.Y., Zhao, D.C.: Study online course evaluation system. Appl. Mech. Mater. 35(2), 2187–2190 (2017)
5. Vance, W.M.: Real-time digital signal processing evaluation system. J. Acoust. Soc. Am. 8(1), 79 (2017)