Search

Your search keyword '"Tang, Xiaoyan"' showing total 2,172 results
Start Over Author "Tang, Xiaoyan"
2,172 results on '"Tang, Xiaoyan"'

1. Oceanic internal solitary wave interactions via the KP equation in a three-layer fluid with shear flow

Author

Sun, Junchao, Tang, Xiaoyan, and Chen, Yong

Subjects
Physics - Fluid Dynamics, Nonlinear Sciences - Pattern Formation and Solitons, Physics - Atmospheric and Oceanic Physics
Abstract

The various patterns of internal solitary wave interactions are complex phenomena in the ocean, susceptible to the influence of shear flow and density distributions. Satellite imagery serves as an effective tool for investigating these interactions, but usually does not provide information on the structure of internal waves and their associated dynamics. Considering a three-layer configuration that approximates ocean stratification, we analytically investigate two-dimensional internal solitary waves (ISW) in a three-layer fluid with shear flow and continuous density distribution using the (2+1)-dimensional Kadomtsev-Petviashvili (KP) model. Firstly, the KP equation is derived from the basic governing equations which include mass and momentum conservations, along with free surface boundary conditions. The coefficients of the KP equation are determined by the vertical distribution of fluid density, shear flow, and layer depth. Secondly, it is found that the interactions of ISW can be carefully classified into five types: ordinary interactions including O-type, asymmetric interactions including P-type, TP-type and TO-type, and Miles resonance. The genuine existence of these interaction types is observed from satellite images in the Andaman Sea, the Malacca Strait, and the coast of Washington state. Finally, the ``bright" and ``dark" internal solitary interactions are discovered in the three-layer fluid, which together constitute the fluctuating forms of oceanic ISW. It is revealed that shear flow is the primary factor to determine whether these types of interactions are ``bright" or ``dark". Besides, a detailed analysis is conducted to show how the ratio of densities influences the properties of these interactions, such as amplitude, angle, and wave width.

Published
2023

10. Study on the Inversion of Dissolved Oxygen in Water Based on HJ-1A Hyperspectral Data

Author

Yang, Lei, Tang, Xiaoyan, Hu, Haotian, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Tan, Kay Chen, Series Editor, Wang, Wei, editor, Liu, Xin, editor, Na, Zhenyu, editor, and Zhang, Baoju, editor

Published
2024
Full Text
View/download PDF

11. Chemical Synthesis of Polyhydroxyalkanoates via Metal-Catalyzed Ring-Opening Polymerization of Cyclic Esters

Author

Tang, Xiaoyan, Abe, Akihiro, Editorial Board Member, Albertsson, Ann-Christine, Editorial Board Member, Coates, Geoffrey W., Editorial Board Member, Genzer, Jan, Editorial Board Member, Kobayashi, Shiro, Editorial Board Member, Lee, Kwang-Sup, Editorial Board Member, Leibler, Ludwik, Editorial Board Member, Long, Timothy E., Editorial Board Member, Möller, Martin, Editorial Board Member, Okay, Oguz, Editorial Board Member, Percec, Virgil, Editorial Board Member, Tang, Ben Zhong, Editorial Board Member, Terentjev, Eugene M., Editorial Board Member, Theato, Patrick, Editorial Board Member, Voit, Brigitte, Editorial Board Member, Wiesner, Ulrich, Editorial Board Member, Zhang, Xi, Editorial Board Member, Künkel, Andreas, editor, Battagliarin, Glauco, editor, Winnacker, Malte, editor, Rieger, Bernhard, editor, and Coates, Geoffrey, editor

Published
2024
Full Text
View/download PDF

25. Complex excitations for the derivative nonlinear Schr\'{o}dinger equation

Author

Zhou, Huijuan, Chen, Yong, Tang, XiaoYan, and Li, Yuqi

Subjects
Nonlinear Sciences - Exactly Solvable and Integrable Systems
Abstract

The Darboux transformation (DT) formulae for the derivative nonlinear Schr\"{o}dinger (DNLS) equation are expressed in concise forms, from which the multi-solitons, n-periodic solutions, higher-order hybrid-pattern solitons and some mixed solutions are obtained. These complex excitations can be constructed thanks to more general semi-degenerate DTs. Even the non-degenerate N-fold DT with a zero seed can generate complicated n-periodic solutions. It is proved that the solution q[N] at the origin depends only on the summation of the spectral parameters. We find the maximum amplitudes of several classes of the wave solutions are determined by the summation. Many interesting phenomena are discovered from these new solutions. For instance, the interactions between n-periodic waves produce peaks with different amplitudes and sizes; A soliton on a single periodic wave background shares a similar feature as a breather due to the interference of the periodic background. In addition, the results are extended to the reverse-space-time DNLS equation., Comment: 24 pages,19 figures

Published
2021

30. Investigation of electrically active defects in GaN using deep-level transient spectroscopy

Author

Tang, Xiaoyan, Halsall, Matthew, and Crowe, Iain

Abstract

In this thesis I will present and discuss the results of electrical and deep-level transient spectroscopy (DLTS) measurements on GaN semiconductors. I report on the effect of sputter metal deposition on the type and concentration of defects in the Si-doped GaN. By comparing the results of the sputtered sample with the evaporated sample, I show a significant increase in leakage current and carrier concentration in the sputter-deposited diode. The DLTS results show that defects detected in the sputtered sample are dissimilar to the defect in the evaporated sample, and defect concentration in the sputtered sample is much higher. I also show that defect concentration in the sputtered sample has dropped 10 times from the surface to 10 nm deeper into the sample, which strongly proved the defect is sputter-induced. These results suggest that additional defects caused by sputter deposition can result in a significant degradation in GaN device performance. I report on the sidewall damages created during reactive-ion etching (RIE) in silicondoped GaN mesa diodes. The defects in mesa diodes of different shapes and areas are characterised using DLTS, and their densities are compared. I show that the concentration of defects is higher in mesa diode with larger area and square shape, due to additional defects are introduced through the sidewall during RIE. The defect distribution in mesa diodes is described by a model, which has precisely reflected the shape and area dependence of defect concentration. I report on the effect of iron doping on the conductivity and deep levels of n-type GaN. The results of electrical measurements show that the leakage current and carrier concentration in the Fe/Si co-doped sample is lower than those in the Si-doped sample. DLTS spectrum of the co-doped sample suggests that Fe doping contributes to the formation of FeGa - VN complex while compensates native vacancies and vacancy complexes, which are major sources of free carriers. The semi-insulating nature of Fe doped GaN and the slow response of Fe concentration in Fe doping are also discussed.

Published
2022

40. On the Evaluation of Firing Accuracy of Electromagnetic Railguns

Author

Chen, Qiming, Tang, Xiaoyan, Li, Zhenchao, Yu, Junsong, Yan, Suna, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Li, Jian, editor, Xie, Kaigui, editor, Hu, Jianlin, editor, and Yang, Qingxin, editor

Published
2023
Full Text
View/download PDF

41. Research on Electromagnetic Launch System of a Small Unmanned Aerial Vehicle

Author

Li, Zhenchao, Ma, Yanbo, Zhao, Wanyu, Yu, Dejiang, Chen, Chong, Chen, Dong, Tang, Xiaoyan, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Xie, Kaigui, editor, Hu, Jianlin, editor, Yang, Qingxin, editor, and Li, Jian, editor

Published
2023
Full Text
View/download PDF

49. Application of regional citrate anticoagulation in patients at high risk of bleeding during intermittent hemodialysis: a prospective multicenter randomized controlled trial

Author

Tang, Xiaoyan, Chen, Dezheng, Zhang, Ling, Fu, Ping, Chen, Yanxia, Xiao, Zhou, Xiao, Xiangcheng, Peng, Weisheng, Cheng, Li, Zhang, Yanmin, Li, Hongbo, Li, Kehui, Gou, Bizhen, Wu, Xin, Yu, Qian, Jian, Lijun, Zhu, Zaizhi, Wen, Yu, Liu, Cheng, Xue, Hen, Zhang, Hongyu, He, Xin, Yan, Bin, Zhong, Liping, Huang, Bin, and Mao, Mingying

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results