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Your search keyword '"Chen, Xiao ‐ Ping"' showing total 2,357 results
Start Over Author "Chen, Xiao ‐ Ping"
2,357 results on '"Chen, Xiao ‐ Ping"'

2. The second order Caffarelli-Kohn-Nirenberg identities and inequalities

Author

Chen, Xiao-Ping and Tang, Chun-Lei

Subjects
Mathematics - Analysis of PDEs
Abstract

This paper focuses on optimal constants and optimizers of the second order Caffarelli-Kohn-Nirenberg inequalities. Firstly, we aim to study optimal constants and optimizers for the following second order Caffarelli-Kohn-Nirenberg inequality in radial space: let $N\ge1$, $t\ge p>1$, \begin{equation}\label{0.1} \left(\int_{\mathbb{R}^N} \frac{|\Delta u|^p}{|x|^{p\alpha}} \mathrm{d}x\right)^{\frac{1}{p}} \left[\int_{\mathbb{R}^N} \frac{\left|\nabla u\right|^{\frac{p(t-1)}{p-1}}} {|x|^{\frac{p(t-1)}{p-1}\beta}} \mathrm{d}x\right]^{\frac{p-1}{p}} \ge C(N,p,t,\alpha,\beta) \int_{\mathbb{R}^N} \frac{\left|\nabla u\right|^t}{|x|^{t\gamma}} \mathrm{d}x. \end{equation} Secondly, we establish second order $L^p$-Caffarelli-Kohn-Nirenberg identities, and obtain optimal constants and optimizers of the second order $L^p$-Caffarelli-Kohn-Nirenberg inequalities (i.e., $p=t$ in \eqref{0.1}) in general space. Lastly, under some more general assumptions, we consider the optimal weighted second order Heisenberg Uncertainty Principles, which complements the recent work [``The sharp second order Caffareli-Kohn-Nirenberg inequality and stability estimates for the sharp second order uncertainty principle'', 2022, arXiv:2102.01425]. This paper's main novelty lies in the fact that we research the optimal versions of the second order Caffarelli-Kohn-Nirenberg inequalities \eqref{0.1} in radial space or in general space, and also establish the second order $L^p$-Caffarelli-Kohn-Nirenberg identities.

Published
2024

3. Origin of giant magnetoresistance in layered nodal-line semimetal TaNiTe5 nanoflakes

Author

Zhou, Ding-Bang, Gao, Kuang-Hong, Zhao, Meng-Fan, Jia, Zhi-Yan, Hu, Xiao-Xia, Guo, Qian-Jin, Du, Hai-Yan, Chen, Xiao-Ping, and Li, Zhi-Qing

Subjects
Condensed Matter - Mesoscale and Nanoscale Physics
Abstract

Layered transition metal chalcogenides have stimulated a wide research interest due to their many exotic physical properties. In this paper, we studied the magnetotransport properties of the exfoliated TaNiTe5, a recently discovered Dirac nodal-line semimetal. A giant positive magnetoresistance (MR) is observed when the current is parallel to the crystallographic c axis, while it is strongly diminished when the current flows along the a axis. The observed giant MR is gradually suppressed either on reducing the thickness of nanoflake or on increasing temperature. By performing MR measurement in tilted magnetic fields, the interlayer coupling is found to be weakened both by reducing the thickness and by increasing temperature. We propose a mechanism of electron-electron interaction-assisted interlayer transport as a origin of the giant MR. The mechanism is likely to provide a explanation for the giant MR in other layered materials., Comment: 21 pages, 7 figures, 1 table

Published
2024

16. The Secret Code of Nonverbal Communication

Author

Adair, Wendi L., Buchan, Nancy R., Chen, Xiao-Ping, Liu, Leigh Anne, Glazer, Sharon, Series Editor, T. Kwantes, Catherine, Series Editor, Adair, Wendi L., Buchan, Nancy R., Chen, Xiao-Ping, and Liu, Leigh Anne

Published
2024
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19. Primary Hepatobiliary Cancer Cohort of Central China (CCGLC-002)

Author

Chinese Cooperative Group of Liver Cancer, Chen Xiao-ping Foundation for the Development of Science and Technology of Hubei Province, Haplox Biotechnology Co., Ltd., Geneplus-Beijing Co. Ltd., YuceBio Technology, Gelesis, Inc., and Zhang Bi Xiang, MD, Chairman of Department of General Surgery

Published
2023

20. Nocardia Rubra Cell Wall Skeleton (N-CWS) Plus HAIC, Lenvatinib and Tislelizumab in Treating Patients With Advanced HCC (CCGLC-007)

Author

Chinese Cooperative Group of Liver Cancer, Chen Xiao-ping Foundation for the Development of Science and Technology of Hubei Province, M&R Pharm, Geneplus-Beijing Co. Ltd., Yuce Biotechnology Co., Ltd., Geneis, Simcere Pharmaceutical Co., Ltd, BeiGene, Haplox Biotechnology Co., Ltd., and Wan-Guang Zhang, Executive Deputy Director of Hepatic Surgery Center

Published
2023

22. Existence and asymptotic behavior of least energy sign-changing solutions for Schrodinger-Poisson systems with doubly critical exponents

Author

Chen, Xiao-Ping and Tang, Chun-Lei

Subjects
Mathematics - Analysis of PDEs, Mathematics - Functional Analysis
Abstract

In this paper, we are concerned with the following Schr\"{o}dinger-Poisson system with critical nonlinearity and critical nonlocal term due to the Hardy-Littlewood-Sobolev inequality \begin{equation}\begin{cases} -\Delta u+u+\lambda\phi |u|^3u =|u|^4u+ |u|^{q-2}u,\ \ &\ x \in \mathbb{R}^{3},\\[2mm] -\Delta \phi=|u|^5, \ \ &\ x \in \mathbb{R}^{3}, \end{cases} \end{equation} where $\lambda\in \mathbb{R}$ is a parameter and $q\in(2,6)$. If $\lambda\ge (\frac{q+2}{8})^2$ and $q\in(2,6)$, the above system has no nontrivial solution. If $\lambda\in (\lambda^*,0)$ for some $\lambda^*<0$, we obtain a least energy radial sign-changing solution $u_\lambda$ to the above system. Furthermore, we consider $\lambda$ as a parameter and analyze the asymptotic behavior of $u_\lambda$ as $\lambda\to 0^-$.

Published
2022

28. Efficacy of antihypertensive treatment for target organ protection in patients with masked hypertension (ANTI-MASK): a multicentre, double-blind, placebo-controlled trial

Author

Li, Yan, Huang, Jian-Feng, Zhang, Dong-Yan, An, De-Wei, Li, Ming-Xuan, Zhang, Yi-Qing, Wang, Ji-Guang, Chen, Xin, Liu, Chang-Yuan, Chang, Gui-Li, Hu, Zhe, Feng, Ying-Qing, Li, Xi-Da, Liu, Can, Huang, Jia-Yi, Yu, Yu-Ling, Zheng, Qi-Dong, Wang, Yi-Yun, Zhang, Xue-Ning, Yu, Jing, Ma, Rui-Xin, Liu, Heng-Xia, Chen, Xiao-Ping, Meng, Qing-Tao, Zhang, Zhi-Peng, Dou, Yu, Zhu, Mei-Yu, Wang, Wen-Juan, Zhu, Li-Li, Zhang, Min, Jiang, Yi-Nong, Lu, Yan, Yu, Wei, Xu, Xiao-Ling, Dai, Qiu-Yan, Zhu, Yu-Feng, Zhang, Hui-Jie, Zhang, Yu, Zhang, Jin-Shun, Bu, Pei-Li, Liu, Ling-Xin, Mu, Jian-Jun, Xu, Jing-Tao, Liao, Yue-Yuan, Guo, Hao, Liang, Xin-Yue, and Staessen, Jan A.

Published
2024
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39. Least energy sign-changing solutions for Schrödinger-Poisson systems with potential well

Author

Chen Xiao-Ping and Tang Chun-Lei

Subjects
schrödinger-poisson system, sign-changing solutions, variational methods, 35a15, 35b38, 35j50, Mathematics, QA1-939
Abstract

In this article, we investigate the existence of least energy sign-changing solutions for the following Schrödinger-Poisson system −Δu+V(x)u+K(x)ϕu=f(u),x∈R3,−Δϕ=K(x)u2,x∈R3,\left\{\begin{array}{ll}-\Delta u+V\left(x)u+K\left(x)\phi u=f\left(u),\hspace{1.0em}& x\in {{\mathbb{R}}}^{3},\\ -\Delta \phi =K\left(x){u}^{2},\hspace{1.0em}& x\in {{\mathbb{R}}}^{3},\\ \hspace{1.0em}\end{array}\right. where the functions V(x),K(x)V\left(x),K\left(x) have finite limits as ∣x∣→∞| x| \to \infty satisfying some mild assumptions. By combining variational methods with the global compactness lemma, we obtain a least energy sign-changing solution with exactly two nodal domains, and its energy is strictly larger than twice that of least energy solutions.

Published
2022
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40. 'Study on microcosmic properties of waste tire rubber powder

Author

WEN Li-yuan, ZHANG Zhan-jun, LIN Hai, HUANG Gang-jun, KE Hai, CHEN Xiao-ping

Subjects
modified asphalt, waste tire rubber powder, orthogonal test, infrared spectrum, four component analysis, thermal stability, Organic chemistry, QD241-441, Chemical engineering, TP155-156, Chemicals: Manufacture, use, etc., TP200-248
Abstract

Modified asphalt with waste tire rubber powder was prepared by using orthogonal experimental design of four levels and four factors. Aging test of film oven was carried out with the optimized combination of rubber powder modified asphalt.The performance changes of different asphalts were evaluated from macroscopic point of view, and chemical components and revolution of rubber modified asphalt were analyzed from microscopic point of view by three major indicators of asphalt, infrared spectroscopy, four component analysis and differential thermal test. The results showed that the optimal ratio of modified asphalt was 17% （mass fraction, the same below） of rubber powder amount ,180 ℃of mixing temperature, 1/6 of modifier mass ratio and 4% of plasticizer amount. The shape and position of the characteristic infrared absorption peak of asphalt modified with rubber powder remained unchanged, but intensity changed. Meanwhile, the content of chemical components was changed. The components of saturated and aromatic decreased, but resin and asphaltene components increased. The addition of rubber powder reduced degradation rate of the asphalt, increased initial degradation temperature and final residue content, and improved thermal stability of the asphalt.

Published
2022
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41. Social mindfulness and prosociality vary across the globe

Author

Van Doesum, Niels J., Murphy, Ryan O., Gallucci, Marcello, Aharonov-Majar, Efrat, Athenstaedt, Ursula, Au, Wing Tung, Bai, Liying, Böhm, Robert, Bovina, Inna, Buchan, Nancy R., Chen, Xiao-Ping, Dumont, Kitty B., Engelmann, Jan B., Eriksson, Kimmo, Euh, Hyun, Fiedler, Susann, Friesen, Justin, Gächter, Simon, Garcia, Camilo, González, Roberto, Graf, Sylvie, Growiec, Katarzyna, Guimond, Serge, Hřebíčková, Martina, Immer-Bernold, Elizabeth, Joireman, Jeff, Karagonlar, Gokhan, Kawakami, Kerry, Kiyonari, Toko, Kou, Yu, Kuhlman, D. Michael, Kyrtsis, Alexandros-Andreas, Lay, Siugmin, Leonardelli, Geoffrey J., Li, Norman P., Li, Yang, Maciejovsky, Boris, Manesi, Zoi, Mashuri, Ali, Mok, Aurelia, Moser, Karin S., Moták, Ladislav, Netedu, Adrian, Pammi, Chandrasekhar, Platow, Michael J., Raczka-Winkler, Karolina, Folmer, Christopher P. Reinders, Reyna, Cecilia, Romano, Angelo, Shalvi, Shaul, Simão, Cláudia, Stivers, Adam W., Strimling, Pontus, Tsirbas, Yannis, Utz, Sonja, van der Meij, Leander, Waldzus, Sven, Wang, Yiwen, Weber, Bernd, Weisel, Ori, Wildschut, Tim, Winter, Fabian, Wu, Junhui, Yong, Jose C., and Van Lange, Paul A. M.

Published
2021

48. Middle power plays: How and when Mach middle managers use downward abuse and upward guanxi to gain and maintain power.

Author

Keng‐Highberger, Fong, Feng, Zhiyu, Yam, Kai Chi, Chen, Xiao‐Ping, and Li, Hu

Subjects
MIDDLE managers, GUANXI, FIELD research, MACHIAVELLIANISM (Psychology), REPUTATION
Abstract

Summary: Given Machiavellianism's strong historical and theoretical roots in power and politics, there are surprisingly few empirical studies, if any, that directly examine how Machiavellians attain and maintain power in organizations. Understanding this is important because Machiavellian employees have managed to effectively gain power to reach managerial positions of influence in organizations despite their negative reputation. Further, there are contradictory theories and peripheral empirical findings that suggest they gain power either by strategically forging important connections or through coercive force. We propose that a Mach middle manager perspective can help illuminate which power‐gaining strategy is used. Drawing from the Machiavellianism literature and power dependence theory, we theorize how Mach middle managers gain coercive power through abusive supervision on those with less power (their subordinates), while building close guanxi with those with more power (their senior manager) to obtain relational empowerment. Moreover, we theorize that they maintain power by increasing both power‐gaining strategies when Mach middle managers perceive a high threat to hierarchy from subordinates, suggesting these parallel relations are positively connected. We found support for our theoretical model using data from a multi‐confederate experimental lab study and two multi‐wave field studies. The theoretical and empirical implications of our findings are discussed. [ABSTRACT FROM AUTHOR]

Published
2024
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