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	Multi-branch erbium fiber-based femtosecond optical frequency comb for measurement of cavity ring-down spectroscopy 期刊论文 OAI收割 ACTA PHYSICA SINICA, 2022, 卷号: 71, 期号: 8, 页码: 9 作者: Bing-Jie, Rao; Pan, Zhang; Ming-Kun, Li; Xi-Guang, Yang; Lu-Lu, Yan \| 收藏 \| 浏览/下载：50/0 \| 提交时间：2022/08/15 erbium fiber-based femtosecond optical frequency comb mode-locked laser spectral broaden spectroscopy measurement
	Solitary kinetic Alfven waves in dusty plasmas 期刊论文 OAI收割 PHYSICS OF PLASMAS, 2008, 卷号: 15, 期号: 8, 页码: 083703 作者: Li, Yang-fang; Wu, D. J.; Morfill, G. E. 收藏 \| 浏览/下载：33/0 \| 提交时间：2011/12/29 Solitary kinetic Alfven waves in dusty plasmas are studied by Considering the dust charge variation. The effect of the dust charge-to-mass ratio on the soliton solution is discussed. The Sagdeev potential is derived analytically with constant dust charge and then calculated numerically by taking the dust charge variation into account. We show that the dust charge-to-mass ratio plays an important role in the soliton properties. The soliton solutions are comprised of two branches. One branch is sub-Alfvenic and the soliton velocity is obviously smaller than the Alfven speed. The other branch is super-Alfvenic and the soliton velocity is very close to or greater than the Alfven speed. Both compressive and rarefactive solitons can exist. For the sub-Alfvenic branch the rarefactive soliton is bell-shaped and it is much narrower than the compressive one. However for the super-Alfvenic branch the compressive soliton is bell-shaped and narrower and the rarefactive one is broadened. When the charge-to-mass ratio of the dust grains is sufficiently high the width of the rarefactive soliton in the super-Alfvenic branch will broaden extremely and a electron depletion will be observed. It is also shown that the bell-shaped soliton can transition to a cusped structure when the velocity is sufficiently high. (C) 2008 American Institute of Physics.
	Red shift and broadening of backward harmonic radiation from electron oscillations driven by femtosecond laser pulse 期刊论文 OAI收割 plasma sci. technol., 2006, 卷号: 8, 期号: 4, 页码: 402, 405 Tian Youwei; Yu Wei; 陆培祥; Senecha Vinod K.; Xu Han; 邓德刚; 李儒新; 徐至展收藏 \| 浏览/下载：1161/295 \| 提交时间：2009/09/18 harmonic emission broaden red shift femtosecond laser
	The signal extraction of fetal heart rate based on wavelet transform and BP neural network (EI CONFERENCE) 会议论文 OAI收割 Third International Conference on Experimental Mechanics and Third Conference of the Asian Committee on Experimental Mechanics, November 29, 2004 - December 1, 2004, Singapore, Singapore Hong Y. X.; Cheng Z. B.; Dai F. H. 收藏 \| 浏览/下载：31/0 \| 提交时间：2013/03/25 This paper briefly introduces the collection and recognition of bio-medical signals the other threading is analyzing data. Using the method designs the method to collect FM signals. A detailed discussion on the system hardware it is broaden to analyze the signal in real-time. Wavelet transform to remove the main interference in the FM and by adding time-window to recognize with BP network structure and functions is also given. Under LabWindows/CVI Finally the results of collecting signals and BP networks are discussed.8 pregnant women's signals of FM were collected successfully by using the sensor. The correctness rate of BP network recognition is about 83.3% by using the above measure. the hardware and the driver do compatible the hardware equipment work properly actively. The paper adopts multi threading technology for real-time analysis and makes use of latency time of CPU effectively expedites program reflect speed improves the program to perform efficiency. One threading is collecting data
	飞秒强激光作用下电子振荡导致的谐波辐射频谱的展宽和红移期刊论文 OAI收割强激光与粒子束, 2005, 卷号: 17, 期号: 12, 页码: 1761, 1764 田友伟; 余玮; 陆培祥; 何峰; 徐涵收藏 \| 浏览/下载：1396/95 \| 提交时间：2009/09/18 谐波辐射 Harmonic emission 展宽 Broaden 红移 Redshift 飞秒激光 Femtosecond laser
	An analysis of the propagation characteristic of a pulse wave through a strong turbulence medium 期刊论文 OAI收割 ACTA PHYSICA SINICA, 2001, 卷号: 50, 期号: 6, 页码: 1052-1057 作者: Zhang, M; Wu, ZS; Zhang, YD; Yang, TG \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2021/11/29 pulse wave turbulence medium two-frequency correlation function pulse broaden scintillation index