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	Precipitation manipulation and terrestrial carbon cycling: The roles of treatment magnitude, experimental duration and local climate 期刊论文 OAI收割 GLOBAL ECOLOGY AND BIOGEOGRAPHY, 2021, 页码: 13 作者: Wang, Jinsong; Tian, Dashuan; Knapp, Alan K.; Chen, Han Y. H.; Luo, Yiqi \| 收藏 \| 浏览/下载：67/0 \| 提交时间：2021/08/19 carbon cycling climatic context experimental duration precipitation response synthesis treatment magnitude
	Precipitation manipulation and terrestrial carbon cycling: The roles of treatment magnitude, experimental duration and local climate 期刊论文 OAI收割 GLOBAL ECOLOGY AND BIOGEOGRAPHY, 2021, 页码: 13 作者: Wang, Jinsong \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2021/08/19 carbon cycling climatic context experimental duration precipitation response synthesis treatment magnitude
	Corner detection using Gabor filters 期刊论文 OAI收割 iet image processing, 2014, 卷号: 8, 期号: 11, 页码: 639-646 作者: Zhang, Wei-Chuan; Wang, Fu-Ping; Zhu, Lei; Zhou, Zuo-Feng 收藏 \| 浏览/下载：51/0 \| 提交时间：2015/03/19 edge detection Gabor filters grey systems affine transforms Gabor filter contour-based corner detection magnitude response edge contour shape analysis local curvature maxima points planar curve corresponding grey-variation information Canny edge detector normalised magnitude response magnitude response threshold angle threshold detection accuracy localisation accuracy afflne transform noise-robustness
	Chirp estimation of PZT for integrating-bucket method (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optical Test and Measurement Technology and Equipment, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhang J.; Liu W.; Zhang J.; Zhang J. 收藏 \| 浏览/下载：21/0 \| 提交时间：2013/03/25 The nonlinear response of the PZT for the integrating bucket method is studied by our proposed method: discrete chirp Fourier transform (DCFT) and maximum likelihood estimation (MLE) techniques for the integrating bucket method. Based on the signal processing theory the intensity obtained from CCD is processed by the DCFT and thus nonlinear response and chirp coefficient of the PZT can be coarsely estimated. This is followed by the MLE method in which an iterative optimization process is complemented for accurately estimating the nonlinear response and chirp coefficient of the PZT. One key advantage of the proposed method is that not only the nonlinear response and chirp coefficient of the PZT can be acquired but also initial phase acquired. Our method is tested by simulating conditions under which a certain magnitude of nonlinearity is assumed. Nonlinear response attained by the DCFT is compared to that attained by the MLE and a difference between the actual nonlinear response of the PZT and our accurate estimation by the proposed method is revealed. Several factors that will have influence on the nonlinear response of the PZT are discussed. 2010 Copyright SPIE - The International Society for Optical Engineering.
	On the relationship of non-parametric methods for coherence function estimation 期刊论文 OAI收割 Elsevier Signal Processing, 2008, 期号: 11 Zheng CS(郑成诗); Zhou MY(周名远); Li XD(李晓东) 收藏 \| 浏览/下载：19/0 \| 提交时间：2011/12/02 Non-parametric Magnitude coherence function (MSC) Minimum variance distortionless response (MVDR) Canonical correlation analysis (CCA)
	Characteristics of ZnMgO-based metal-semiconductor-metal photodetectors (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Photoelectronic Imaging and Detection, September 9, 2007 - September 12, 2007, Beijing, China 作者: Zhang J.; Li B.; Li B.; Li B.; Zhao Y. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 In recent years ZnMgO semiconductor alloys with a direct bandgap tunable between 3.37 eV and 7.8 eV become one of the most suitable materials for the fabrication of ultraviolet detectors. In this paper we have fabricated metal-semiconductor-metal photodetectors on 1-m thick Zn 0.8Mg0.2O films. The interdigital metal electrodes are 500 m long and 5 m wide with an interelectrode spacing 2 m 5 m and 10 m respectively. Zn0.8Mg0.2O films were grown on quartz by ratio frequency magnetron sputtering at 500C. Dark current spectral responsivity and pulse response were carried out for the devices with different finger pitches. All the photodetectors showed the peak responsivity at 330 nm and the ultraviolet-visible rejection ratio (R330 nm/R400 nm) is more than four orders of magnitude at 3 V bias. For the device with 2 m finger pitch the detectivity was calculated as 4.21011 cm Hz 1/2/W at 330 nm. Furthermore the transient response measurement for all devices revealed similar rise time of 10 ns. The 90%-10% fall times are 130 ns 170 ns and 230 ns for the devices with different finger pitches of 2 m 5 m and 10 m respectively..
	On orbit MTF measurement of remote sensing camera based on wavelet transform (EI CONFERENCE) 会议论文 OAI收割 ICO20: Remote Sensing and Infrared Devices and Systems, August 21, 2005 - August 26, 2005, Changchun, China 作者: Wang X.; Wang X.; Wang X. 收藏 \| 浏览/下载：17/0 \| 提交时间：2013/03/25 High resolution remote sensing images are often applied in many research fields. But there are less research on images quality for an orbit remote sensing camera. The magnitude of the OTF as the modulation transfer function (MTF) is a measure of the 2-D spatial frequency response of the remote sensing camera. In this paper knife-edge technique based on quadratic spline wavelet fast transform algorithm is proposed and applied to generate MTF with a greatly high resolution in horizontal or vertical direction. The result has fully demonstrate the potential applicability and good property of the method to estimate MTF for remote sensing camera.