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1,201 results on '"ZHANG, Qiqi"'

3. Liouville theorem for quasilinear elliptic equations in $\mathbb R^N$

Author

Wu, Wangzhe and Zhang, Qiqi

Subjects
Mathematics - Analysis of PDEs
Abstract

We prove Liouville theorem for the equation $\Delta_m v + v^p + M |\nabla v|^{q}= 0$ in a domain $\Omega\subset\mathbb R^n$, with $M\in \mathbb{R}$ in the critical and subcritical case. As a natural extension of our recent work \cite{MWZ}, the proof is based on an integral identity and Young's inequality.

Published
2023

11. High Energy Density in layered 2D Nanomaterial based Polymer Dielectric Films

Author

Singh, Maninderjeet, Das, Priyanka, Samanta, Pabitra Narayan, Bera, Sumit, Tanthirige, Ruskshan, Shook, Brian, Nejat, Roshanak, Behera, Banarji, Zhang, Qiqi, Dai, Qilin, Pramanik, Avijit, Ray, Paresh, Raghavan, Dharmaraj, Leszczysnki, Jerzy, Karim, Alamgir, and Pradhan, Nihar R.

Subjects
Physics - Applied Physics, Condensed Matter - Materials Science
Abstract

Dielectric capacitors are critical components in electronics and energy storage devices. The polymer based dielectric capacitors have advantages of flexibility, fast charge and discharge, low loss, and graceful failure. Elevating the use of polymeric dielectric capacitors for advanced energy applications such as electric vehicles (EVs) however requires significant enhancement of their energy densities. Here, we report a polymer thin film heterostructure based capacitor of poly(vinylidene fluoride)/poly(methyl methacrylate) with stratified 2D nanofillers (Mica or h-BN nanosheets) (PVDF/PMMA-2D fillers/PVDF), that shows enhanced permittivity, high dielectric strength and an ultra-high energy density of 75 J/cm3 with efficiency over 79%. Density functional theory calculations verify the observed permittivity enhancement. This approach of using oriented 2D nanofillers based polymer heterostructure composites is expected to be universal for designing high energy density thin film polymeric dielectric capacitors for myriads of applications.

Published
2023
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13. Comparative Analysis of forecasting exchange rate using ARCH and GARCH Models: A Case Study of China

Author

Zhang, Qiqi, Pan, Jianing, Geng, Jiahao, Zhu, Xun, Appolloni, Andrea, Series Editor, Caracciolo, Francesco, Series Editor, Ding, Zhuoqi, Series Editor, Gogas, Periklis, Series Editor, Huang, Gordon, Series Editor, Nartea, Gilbert, Series Editor, Ngo, Thanh, Series Editor, Striełkowski, Wadim, Series Editor, Elbagory, Khaled, editor, Wu, Zefu, editor, Al-Jaifi, Hamdan Amer Ali, editor, and Zabri, Shafie Mohamed, editor

Published
2024
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46. Federated Learning Based Collaboration Framework of Data Sharing for Intelligent Design of Residential Buildings

Author

Zhang, Qiqi, Pan, Wei, Barbosa-Povoa, Ana Paula, Editorial Board Member, de Almeida, Adiel Teixeira, Editorial Board Member, Gans, Noah, Editorial Board Member, Gupta, Jatinder N. D., Editorial Board Member, Heim, Gregory R., Editorial Board Member, Hua, Guowei, Editorial Board Member, Kimms, Alf, Editorial Board Member, Li, Xiang, Editorial Board Member, Masri, Hatem, Editorial Board Member, Nickel, Stefan, Editorial Board Member, Qiu, Robin, Editorial Board Member, Shankar, Ravi, Editorial Board Member, Slowiński, Roman, Editorial Board Member, Tang, Christopher S., Editorial Board Member, Wu, Yuzhe, Editorial Board Member, Zhu, Joe, Editorial Board Member, Zopounidis, Constantin, Editorial Board Member, Li, Jing, editor, Lu, Weisheng, editor, Peng, Yi, editor, Yuan, Hongping, editor, and Wang, Daikun, editor

Published
2023
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47. The Inheritance and Innovation of Cultural Variety Shows : Taking the Third Season of 'The Reader' as an Example

Author

Zhang, Qiqi, Striełkowski, Wadim, Editor-in-Chief, Black, Jessica M., Series Editor, Butterfield, Stephen A., Series Editor, Chang, Chi-Cheng, Series Editor, Cheng, Jiuqing, Series Editor, Dumanig, Francisco Perlas, Series Editor, Al-Mabuk, Radhi, Series Editor, Scheper-Hughes, Nancy, Series Editor, Urban, Mathias, Series Editor, Webb, Stephen, Series Editor, Zhan, Zehui, editor, Chew, Fong Peng, editor, and Anthony, Marcus T., editor

Published
2023
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