Zobrazeno 1 - 10
of 143
pro vyhledávání: '"Jifeng Chu"'
Autor:
Cang Liang, Huan Yuan, Cheng Zhao, Renjie Zhang, Aijun Yang, Jifeng Chu, Mingzhe Rong, Xiaohua Wang, Aiguo Patrick Hu
Publikováno v:
International Journal of Electrical Power & Energy Systems, Vol 160, Iss , Pp 110084- (2024)
At present, wireless power transfer (WPT) systems with constant current (CC) or constant voltage (CV) characteristics are typically achieved using a single transmitter and single pickup (STSP) configuration, which cannot transfer power to multiple ba
Externí odkaz:
https://doaj.org/article/28e16d62d3204edeb577590e9cb5561b
Publikováno v:
High Voltage, Vol 9, Iss 2, Pp 336-345 (2024)
Abstract Vibration with a frequency of 100 Hz is widely distributed in the power equipment, and it can provide a new way to supply energy for sensors by vibration energy harvesting. The vibration energy harvesting method based on electromagnetic indu
Externí odkaz:
https://doaj.org/article/c63d0df79ae241d09a6570b272a01b0f
Autor:
Jifeng Chu, Aijun Yang, Qiongyuan Wang, Xu Yang, Dawei Wang, Xiaohua Wang, Huan Yuan, Mingzhe Rong
Publikováno v:
Microsystems & Nanoengineering, Vol 7, Iss 1, Pp 1-16 (2021)
Abstract A difficult issue restricting the development of gas sensors is multicomponent recognition. Herein, a gas-sensing (GS) microchip loaded with three gas-sensitive materials was fabricated via a micromachining technique. Then, a portable gas de
Externí odkaz:
https://doaj.org/article/e478b63516cf42e6bbf96b8a92bb870a
Autor:
Aijun Yang, Weijuan Li, Jifeng Chu, Dawei Wang, Huan Yuan, Jinguo Zhu, Xiaohua Wang, Mingzhe Rong
Publikováno v:
Materials & Design, Vol 187, Iss , Pp - (2020)
Metal oxide semiconductors (MOSs) are widely used gas-sensing materials because of their large response values and fast response speed. However, high operating temperature hinders the development of MOS-based gas sensors. To detect SF6 decomposition
Externí odkaz:
https://doaj.org/article/0d24c33885fd453098f8f5a0ada6288e
Autor:
Juntao Sun, Jifeng Chu
Publikováno v:
Electronic Journal of Differential Equations, Vol 2014, Iss 94,, Pp 1-10 (2014)
In this article we give a necessary sufficient conditions for the existence of periodic solutions to impulsive periodic solution for a singular differential equation. The proof is based on the variational method.
Externí odkaz:
https://doaj.org/article/4ae7814d8b3447f699ac383aa6889a95
Publikováno v:
Abstract and Applied Analysis, Vol 2015 (2015)
Externí odkaz:
https://doaj.org/article/6e35aa7435c245189c1ec6178048164a
Autor:
Jifeng Chu, Zhongcheng Zhou
Publikováno v:
Electronic Journal of Differential Equations, Vol 2005, Iss 86, Pp 1-9 (2005)
We study the ordinary differential equation $x''+lambda a(t)f(x)=0$ with the boundary conditions $x(0)=0$ and $x'(1)=int_{eta}^{1}x'(s)dg(s)$. We characterize values of $lambda$ for which boundary-value problem has a positive solution. Also we find a
Externí odkaz:
https://doaj.org/article/0b57f379e9664499baf632736b89d3dd
Publikováno v:
Abstract and Applied Analysis, Vol 2013 (2013)
Externí odkaz:
https://doaj.org/article/7738417b70f543d1813365448cd0f813
Publikováno v:
Abstract and Applied Analysis, Vol 2013 (2013)
We present a survey on the existence of periodic solutions of singular differential equations. In particular, we pay our attention to singular scalar differential equations, singular damped differential equations, singular impulsive differential equa
Externí odkaz:
https://doaj.org/article/db0eb8da005d44b1b0ffe69ec6a31d52
Autor:
Jifeng Chu, Ting Xia
Publikováno v:
Abstract and Applied Analysis, Vol 2010 (2010)
Let a(t),b(t) be continuous T-periodic functions with ∫0Tb(t)dt=0. We establish one stability criterion for the linear damped oscillator x′′+b(t)x′+a(t)x=0. Moreover, based on the computation of the corresponding Birkhoff normal forms, we pre
Externí odkaz:
https://doaj.org/article/ccd45a2651ed440796706d850bcfb84e