Open Access
Issue
JNWPU
Volume 39, Number 1, February 2021
Page(s) 189 - 196
DOI https://doi.org/10.1051/jnwpu/20213910189
Published online 09 April 2021

© 2021 Journal of Northwestern Polytechnical University. All rights reserved.

Licence Creative Commons
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.