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28 results on '"Chen, Shaoxuan"'

1. Data-Driven Discovery of Conservation Laws from Trajectories via Neural Deflation

Author

Chen, Shaoxuan, Kevrekidis, Panayotis G., Zhang, Hong-Kun, and Zhu, Wei

Subjects
Nonlinear Sciences - Pattern Formation and Solitons, Computer Science - Machine Learning
Abstract

In an earlier work by a subset of the present authors, the method of the so-called neural deflation was introduced towards identifying a complete set of functionally independent conservation laws of a nonlinear dynamical system. Here, we extend by a significant step this proposal. Instead of using the explicit knowledge of the underlying equations of motion, we develop the method directly from system trajectories. This is crucial towards enhancing the practical implementation of the method in scenarios where solely data reflecting discrete snapshots of the system are available. We showcase the results of the method and the number of associated conservation laws obtained in a diverse range of examples including 1D and 2D harmonic oscillators, the Toda lattice, the Fermi-Pasta-Ulam-Tsingou lattice and the Calogero-Moser system.

Published
2024

2. Identification of moment equations via data-driven approaches in nonlinear schrodinger models

Author

Yang, Su, Chen, Shaoxuan, Zhu, Wei, and Kevrekidis, P. G.

Subjects
Nonlinear Sciences - Pattern Formation and Solitons, Mathematical Physics
Abstract

The moment quantities associated with the nonlinear Schrodinger equation offer important insights towards the evolution dynamics of such dispersive wave partial differential equation (PDE) models. The effective dynamics of the moment quantities is amenable to both analytical and numerical treatments. In this paper we present a data-driven approach associated with the Sparse Identification of Nonlinear Dynamics (SINDy) to numerically capture the evolution behaviors of such moment quantities. Our method is applied first to some well-known closed systems of ordinary differential equations (ODEs) which describe the evolution dynamics of relevant moment quantities. Our examples are, progressively, of increasing complexity and our findings explore different choices within the SINDy library. We also consider the potential discovery of coordinate transformations that lead to moment system closure. Finally, we extend considerations to settings where a closed analytical form of the moment dynamics is not available.

Published
2024

7. Microglial Piezo1 senses Aβ fibril stiffness to restrict Alzheimer’s disease

Author

Hu, Jin, primary, Chen, Qiang, additional, Zhu, Hongrui, additional, Hou, Lichao, additional, Liu, Wei, additional, Yang, Qihua, additional, Shen, Huidan, additional, Chai, Guolin, additional, Zhang, Boxin, additional, Chen, Shaoxuan, additional, Cai, Zhiyu, additional, Wu, Chongxin, additional, Hong, Fan, additional, Li, Hongda, additional, Chen, Sifang, additional, Xiao, Naian, additional, Wang, Zhan-xiang, additional, Zhang, Xueqin, additional, Wang, Bo, additional, Zhang, Liang, additional, and Mo, Wei, additional

Published
2023
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13. Characterization of delamination failure of two-dimensional horseshoe stretchable interconnects using digital image correlation

Author

Zhang Hongru, Chen Shaoxuan, Bing Liu, Cheng Chen, and Gu Wanghang

Subjects
Digital image correlation, Materials science, Polymers and Plastics, Digital image correlation (DIC), 02 engineering and technology, 010402 general chemistry, 01 natural sciences, von Mises yield criterion, Delamination failure, Point (geometry), Interconnection, Pixel, business.industry, Organic Chemistry, Delamination, Structural engineering, 021001 nanoscience & nanotechnology, Sample (graphics), 0104 chemical sciences, lcsh:TP1080-1185, von mises strain, Stretchable interconnect, lcsh:Polymers and polymer manufacture, Feature (computer vision), 0210 nano-technology, business
Abstract

The purpose of this paper is to achieve efficient detection and prediction of delamination failure of stretchable interconnects by using digital image correlation (DIC) methods. In order to achieve this goal, a visual experiment system and a delamination failure detection and prediction method are designed, and the mechanical characteristics of two-dimensional horseshoe-shaped interconnect are experimentally studied. Firstly, the evolution law of von Mises strain on the surface of the sample was analyzed, and then the time and location of the failure were determined by measuring and calculating the strain at the failure site, and the site that was about to fail was predicted based on this criterion. The experimental results show that von Mises strain field has a distribution feature closely related to the two-dimensional horseshoe geometry, and the boundaries of each strain region are obvious. When a 2 μm layer thickness sample was stretched 3.2 mm at 50 °C, the sample delaminates at 60 pixels on the horizontal reference line, based on the 0.0187 strain difference at the failure point, the location where the failure is about to occur is successfully predicted.

Published
2021

14. Temporarily Epigenetic Repression in Bergmann Glia Regulates the Migration of Granule Cells

Author

Chen, Shaoxuan, primary, Zhang, Kunkun, additional, Zhang, Boxin, additional, Jiang, Mengyun, additional, Zhang, Xue, additional, Guo, Yi, additional, Yu, Yingying, additional, Qin, Tianyu, additional, Li, Hongda, additional, Chen, Qiang, additional, Cai, Zhiyu, additional, Luo, Site, additional, Huang, Yi, additional, Hu, Jin, additional, and Mo, Wei, additional

Published
2021
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15. Decoupling and detecting angular motion errors based on a line laser sensor for motion platforms

Author

Zhang Hongru, Cheng Chen, Chen Shaoxuan, Hongwei Ji, Bing Liu, and Kai Zhang

Subjects
Physics, business.industry, Decoupling (cosmology), Repeatability, Laser, 01 natural sciences, Atomic and Molecular Physics, and Optics, law.invention, 010309 optics, Light intensity, Interferometry, Circular motion, Optics, law, 0103 physical sciences, Line (geometry), Cartesian coordinate system, Electrical and Electronic Engineering, business, Engineering (miscellaneous)
Abstract

Efficient measurement of a line laser sensor can be achieved by combining it with a multi-axis platform. However, the measuring results are significantly affected by the precision of the platform. To provide a criterion for verifying and compensating for the geometric errors of a platform, a measuring method based on a line laser sensor for angular motion errors is proposed for the first time to the best of our knowledge in this work. The principles of separating and simultaneously detecting the yaw, roll, and pitch errors are elaborated. Based on this, the detection model is built for a three-dimensional platform. Under such an experimental condition, the stability and accuracy of the line laser sensor is tested, and the experimental results revealed small deviations of 3 µm and 10 µm in z axis and x axis, respectively. Ultimately, a series of experiments is performed to verify the feasibility and repeatability of the method. The yaw experimental results indicate that the trend and rule of error conform to the measured value by a laser interferometer, and the maximum variation value is 0.0075 mrad.

Published
2020

16. Effect of an improved multistage thermo-mechanical processing on microstructure and mechanical property of TiB2/Al-Cu composites.

Author

Chen, Songyi, Chen, Shaoxuan, Wang, Dengbiao, and Chen, Kanghua

Subjects
*COLD rolling, *HEAT treatment, *PRECIPITATION (Chemistry), *ALUMINUM composites, *GRAIN size
Abstract

An improved multistage thermomechanical processing including multitemperature rolling and solution heat treatment, severe cold rolling and short-time aging heat treatment, of in-situ TiB2/Al-Cu composites have been proposed to modify matrix grain size, TiB2 particle distribution and precipitates. The average grain size of multitemperature rolling process was about 2 times smaller than that of conventional high temperature rolling. Additional, severe cold rolling prior to aging heat treatment was beneficial to form homogeneous distribution TiB2 particles. The strength and ductility of TiB2/Al-Cu composites were significantly increased by the improved multistage thermomechanical processing due to the formation of finer recrystallized grains, more homogeneous distribution of TiB2 particles and finer aging precipitates. [ABSTRACT FROM AUTHOR]

Published
2024
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17. Deficits in bone geometry in growth hormone-deficient prepubertal boys revealed by high-resolution peripheral quantitative computed tomography

Author

G., Baer Tamar, primary, Agarwal, Sanchita, additional, Chen, Shaoxuan, additional, Chiuzan, Codruta, additional, Sopher, Aviva B., additional, Tao, Rachel, additional, Hassoun, Abeer, additional, Shane, Elizabeth, additional, Fennoy, Ilene, additional, Oberfield, Sharon E., additional, and Vuguin, Patricia M., additional

Published
2020
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19. Viscoelastic characterization of injured brain tissue after controlled cortical impact (CCI) using a mouse model

Author

Qiu, Suhao, primary, Jiang, Wenheng, additional, Alam, Mohammad Shah, additional, Chen, Shaoxuan, additional, Lai, Changxin, additional, Wang, Tianyao, additional, Li, Xiangdong, additional, Liu, Jun, additional, Gao, Mingyuan, additional, Tang, Yaohui, additional, Li, Xiaowei, additional, Zeng, Jianfeng, additional, and Feng, Yuan, additional

Published
2020
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20. Nucleoporin Seh1 Interacts with Olig2/Brd7 to Promote Oligodendrocyte Differentiation and Myelination

Author

Liu, Zhixiong, primary, Yan, Minbiao, additional, Liang, Yaoji, additional, Liu, Min, additional, Zhang, Kun, additional, Shao, Dandan, additional, Jiang, Rencai, additional, Li, Li, additional, Wang, Chaomeng, additional, Nussenzveig, Daniel R., additional, Zhang, Kunkun, additional, Chen, Shaoxuan, additional, Zhong, Chuanqi, additional, Mo, Wei, additional, Fontoura, Beatriz M.A., additional, and Zhang, Liang, additional

Published
2019
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21. Deficits in Bone Geometry in Growth Hormone-Deficient Prepubertal Boys Revealed by High-Resolution Peripheral Quantitative Computed Tomography

Author

Baer, Tamar G., primary, Agarwal, Sanchita, additional, Chen, Shaoxuan, additional, Chiuzan, Codruta, additional, Sopher, Aviva B., additional, Tao, Rachel, additional, Hassoun, Abeer, additional, Shane, Elizabeth, additional, Fennoy, Ilene, additional, Oberfield, Sharon E., additional, and Vuguin, Patricia M., additional

Published
2019
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23. Effect of an improved multistage thermo-mechanical processing on microstructure and mechanical property of TiB2/Al-Cu composites

Author

Chen, Songyi, Chen, Shaoxuan, Wang, Dengbiao, and Chen, Kanghua

Abstract

An improved multistage thermomechanical processing including multitemperature rolling and solution heat treatment, severe cold rolling and short-time aging heat treatment, of in-situ TiB2/Al-Cu composites have been proposed to modify matrix grain size, TiB2 particle distribution and precipitates. The average grain size of multitemperature rolling process was about 2 times smaller than that of conventional high temperature rolling. Additional, severe cold rolling prior to aging heat treatment was beneficial to form homogeneous distribution TiB2particles. The strength and ductility of TiB2/Al-Cu composites were significantly increased by the improved multistage thermomechanical processing due to the formation of finer recrystallized grains, more homogeneous distribution of TiB2particles and finer aging precipitates.

Published
2024
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24. ULK1/2 Constitute a Bifurcate Node Controlling Glucose Metabolic Fluxes in Addition to Autophagy

Author

Li, Terytty Yang, primary, Sun, Yu, additional, Liang, Yu, additional, Liu, Qing, additional, Shi, Yuzhe, additional, Zhang, Chen-Song, additional, Zhang, Cixiong, additional, Song, Lintao, additional, Zhang, Pu, additional, Zhang, Xianzhong, additional, Li, Xiaotong, additional, Chen, Tao, additional, Huang, Hui-Ying, additional, He, Xiadi, additional, Wang, Yi, additional, Wu, Yu-Qing, additional, Chen, Shaoxuan, additional, Jiang, Ming, additional, Chen, Canhe, additional, Xie, Changchuan, additional, Yang, James Y., additional, Lin, Yan, additional, Zhao, Shimin, additional, Ye, Zhiyun, additional, Lin, Shu-Yong, additional, Chiu, Daniel Tsun-yee, additional, and Lin, Sheng-Cai, additional

Published
2016
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28. [Experimental study on the stimulating effect and the tissue compatibility of a new type of implanted gastric electrical stimulator].

Author

Li Y, Yao S, Mai S, Yao L, Chen S, Zhang W, Guo W, and Zhang C

Subjects
Animals, Dogs, Electrodes, Implanted, Female, Histocompatibility, Electric Stimulation instrumentation, Electric Stimulation methods, Stomach physiology
Abstract

A new type of gastric electrical stimulator (GES) was introduced. After the stimulator was implanted in beagle dogs, its stimulating effects and the pathological changes at the implant site were observed to study the safety and efficacy of stimulator as well as the tissue compatibility of the materials used. The results showed that, this type of stimulator was safe and capable of inhibiting food intake of the dogs, and that the materials used had good tissue compatibility.

Published
2011

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