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32 results on '"Zhang, Yishen"'

11. How the Cognitive Styles Affect the Immersive Experience: A Study of Video-Watching Experience in VR

Author

Li, Wei, Lu, Xiaobo, Zhang, YiShen, Zhao, Huiya, Hutchison, David, Editorial Board Member, Kanade, Takeo, Editorial Board Member, Kittler, Josef, Editorial Board Member, Kleinberg, Jon M., Editorial Board Member, Mattern, Friedemann, Editorial Board Member, Mitchell, John C., Editorial Board Member, Naor, Moni, Editorial Board Member, Pandu Rangan, C., Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Terzopoulos, Demetri, Editorial Board Member, Tygar, Doug, Editorial Board Member, Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Marcus, Aaron, editor, and Wang, Wentao, editor

Published
2019
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16. Credit Risk Assessment Based on Long Short-Term Memory Model

Author

Zhang, Yishen, Wang, Dong, Chen, Yuehui, Shang, Huijie, Tian, Qi, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Huang, De-Shuang, editor, Jo, Kang-Hyun, editor, and Figueroa-García, Juan Carlos, editor

Published
2017
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17. Credit Risk Assessment Based on Flexible Neural Tree Model

Author

Zhang, Yishen, Wang, Dong, Chen, Yuehui, Zhao, Yaou, Shao, Peng, Meng, Qingfang, Hutchison, David, Series editor, Kanade, Takeo, Series editor, Kittler, Josef, Series editor, Kleinberg, Jon M., Series editor, Mattern, Friedemann, Series editor, Mitchell, John C., Series editor, Naor, Moni, Series editor, Pandu Rangan, C., Series editor, Steffen, Bernhard, Series editor, Terzopoulos, Demetri, Series editor, Tygar, Doug, Series editor, Weikum, Gerhard, Series editor, Cong, Fengyu, editor, Leung, Andrew, editor, and Wei, Qinglai, editor

Published
2017
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19. An efficiency calculation model for ball screws by accounting for lead errors

Author

Zhang, Yishen, Zhou, Changguang, Feng, Hutian, Zhang, Yishen, Zhou, Changguang, and Feng, Hutian

Abstract

Transmission efficiency is a pivotal indicator, providing a comprehensive view of the overall performance of a ball screw. While extensive research has predominantly focused on computing transmission efficiency across various operating conditions, the factors influencing the variability have often been overlooked. This study introduces an innovative method for computing transmission efficiency, which considers lead error, drawing on deformation coordination theory and load distribution. Multiple ball screws of varying precision grades underwent rigorous testing to quantify lead errors. Subsequently, each screw was matched with an identical set of nuts to measure the respective transmission efficiencies. Experimental results reveal a linear correlation between lead error and transmission efficiency when both lead error and uneven ball load distribution in ball screws are considered. The relative error between the calculated transmission efficiency results and experimental values for ball screws of different precision grades falls within the range of 0 % to 7.42 %, confirming the validity of the proposed model in this paper.

Published
2023

21. Mercury’s mantle as constrained by its crust

Author

Namur, Olivier, primary, Tosi, Nicola, additional, Shorttle, Oliver, additional, Cartier, Camille, additional, Lin, Yanhao, additional, Zhang, Yishen, additional, Saracino, Fabrizio, additional, Llado, Laurie, additional, Pirotte, Hadrien, additional, and Charlier, Bernard, additional

Published
2023
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28. A re-evaluation of the Al-in-Olivine geothermometer

Author

Zhang, Yishen, primary, Namur, Olivier, additional, Charlier, Bernard, additional, Li, Weiran, additional, Shorttle, Oliver, additional, Gazel, Esteban, additional, Jennings, Eleanor, additional, Thy, Peter, additional, and Grove, Timothy, additional

Published
2022
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30. A novel calculation expression for the experimental friction coefficient of the ball screw

Author

Zhang, Yishen, Zhou, Changguang, Feng, Hutian, Zhang, Yishen, Zhou, Changguang, and Feng, Hutian

Abstract

The friction coefficient inevitably affects the friction force between balls and raceway thus might significantly change the performance of the ball screw. However, the traditional methods for determining friction coefficient are based on different empirical values which may lead to different results. To this end, this paper studies the variation law of the friction coefficient by considering different lubrication states between balls and raceway. An experiment is carried out, through which a Stribeck tribology-based expression of the friction coefficient is proposed. The given results provide two obvious stages of lubrication, and the turning point of the two stages represents the minimum value of the friction coefficient. Moreover, the rotational speed is the main factor that influences the value of the friction coefficient based on the calculation of the average central film thickness.

Published
2021

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