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	Prediction of soil organic carbon in black soil based on a synergistic scheme from hyperspectral data: Combining fractional-order derivatives and three-dimensional spectral indices 期刊论文 OAI收割 COMPUTERS AND ELECTRONICS IN AGRICULTURE, 2024, 卷号: 220, 页码: 108905 作者: Geng, Jing; Lv, Junwei; Pei, Jie; Liao, Chunhua; Tan, Qiuyuan \| 收藏 \| 浏览/下载：23/0 \| 提交时间：2024/06/17 ZY1-02D Digital soil mapping Soil organic carbon Three-dimensional spectral index Fractional order derivative
	Performance investigation of SP3 and diffusion approximation for three-dimensional whole-body optical imaging of small animals 期刊论文 OAI收割 MEDICAL & BIOLOGICAL ENGINEERING & COMPUTING, 2015, 卷号: 53, 期号: 9, 页码: 805-814 作者: Yang, Defu; Chen, Xueli; Cao, Xu; Wang, Jing; Liang, Jimin 收藏 \| 浏览/下载：33/0 \| 提交时间：2015/11/04 Tissue classification criterion Performance investigation Third-order simplified harmonic spherical approximation Diffusion approximation Three-dimensional optical imaging
	Structural design of large aperture rectangular mirror for space telescope (EI CONFERENCE) 会议论文 OAI收割 2nd International Conference on Civil Engineering and Transportation, ICCET 2012, October 27, 2012 - October 28, 2012, Guilin, China 作者: Li Z.; Li Z. 收藏 \| 浏览/下载：49/0 \| 提交时间：2013/03/25 Structural design of large aperture mirror is one of the key technologies for space telescope development. To meet the requirements of high stiffness strength and thermal dimensional stability some factors such as support scheme materials selection lightweight design and flexible support design were taken into account. The three supports location of the mirror was determined according to the modal analytical solution. By adjusting the parameters of flexure hinge influences of gravity assembly stress and thermal stress on the mirror were reduced obviously. Finite element analysis (FEA) results indicate that the surface accuracy reach to rms10.2nm and 10.8nm under the gravity along optical axis direction and 5C uniform temperature rise respectively the fundamental frequency of the mirror component is 268Hz. Dynamics test shows that the first order natural frequency is 256Hz which shows an error less than 5% compared to FEA results. (2013) Trans Tech Publications Switzerland.
	Research on the torque characteristic of disc micromotor on axial magnetic field (EI CONFERENCE) 会议论文 OAI收割 2012 2nd International Conference on Consumer Electronics, Communications and Networks, CECNet 2012, April 21, 2012 - April 23, 2012, Three Gorges, China Liu B. 收藏 \| 浏览/下载：60/0 \| 提交时间：2013/03/25 In order to increase the electromagnetic torque density of micromotor with axial magnetic field numerical analysis of permanent magnetic field and electromagnetic torque were deduced and the key factors of increasing torque density of micromotor was obtained. The numerical analysis of three-dimensional magnetic field in air gap produced by spliced sector permanent magnetic poles is done and the way of improving flux density and permanent magnet use efficiency are given through investigating the influence of magnet thickness height of air gap and pole interval rate and other parameters to air gap flux density and leakage flux. Based on the test of axial magnetic field and torque characteristic of micromotor the analysis of micromotor magnetic field and calculation of torque are verified meanwhile using the plane stator with 0.7mm thickness assemble micromotor having minimum air gap height of 1mm and its torque constant up to 3.8mNm/A. 2012 IEEE.
	The angular velocity estimation principal of -- filter based on high sampling rate (EI CONFERENCE) 会议论文 OAI收割 2011 2nd International Conference on Mechanic Automation and Control Engineering, MACE 2011, July 15, 2011 - July 17, 2011, Inner Mongolia, China 作者: Zhang Y. 收藏 \| 浏览/下载：34/0 \| 提交时间：2013/03/25 In order to get angular velocity of stabilization servo mechanism from angular position sensors -- filter and its angular velocity transfer function were predigested. Combing with optimum parameters -- filter based on high sampling rate was established the effect of and sample rate on filter nature frequency were evaluated. According to the requirements of stabilization platform the principle of steady and transient tracking filter differential were proved. With the hypothesis of constant acceleration the frequency characteristics of angular velocity transfer function were analyzed three-dimensional Kalman filter was simplified and the filter parameters were designed. The results show that when the spectrum of input signal was lower than 6rad/s parameters was 0.02 and sampling period were 0.08ms and 0.1ms respectively the filter can realize differential exactly when the spectrum was 9rad/s the precision was no less than 1.1% the phase leading of angular position was no less than 70 the natural frequency should be higher than the cut-off frequency of stabilization platform was two or three times. In the engineering of electro-optical stabilization servo mechanism -- filter has properties of tracking differential and reached the requirement of platform angular velocity estimation. Also it is one of the effective methods to get angular velocity from angular position sensors. 2011 IEEE.
	Modeling of satellite borne TDI CCD pitching imaging image motion velocity vector (EI CONFERENCE) 会议论文 OAI收割 2009 IEEE International Conference on Automation and Logistics, ICAL 2009, August 5, 2009 - August 7, 2009, Shenyang, China 作者: Zhang L.; Li S.; Zhang L. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 In order to obtain three-dimensional observation effect with single satellite borne time delay and integrate charge coupled device (TDI-CCD) pitching imaging is required. More accurate real-time image motion velocity vector computational model of space camera is also necessary to make the imaging perfect. Imaging motion velocity vector computation model must be set up on image plane at pitching imaging. According to the geometric relationship between the pitching imaging space camera and the Earth's rotation motion satellite borne TDI CCD pitching imaging motion velocity vector model is derived by mapping the ground speed to the image plane and using coordinate transformation method. The numerical simulation results show that the image velocity model can reduce deviation angle error about 33' and about 30% image motion speed error compared to traditional ground velocity model. 2009 IEEE.
	Template synthesis of 3-D bimodal ordered porous silica 期刊论文 OAI收割 CHINESE SCIENCE BULLETIN, 2001, 卷号: 46, 期号: 21, 页码: 1785-1790 作者: Yang, ZZ; Qi, K; Rong, JH; Wang, LJ; Liu, ZP \| 收藏 \| 浏览/下载：26/0 \| 提交时间：2019/04/09 Template Synthesis Bimodal Porous Silica Three Dimensional Order Bulk Sol-gel Process
	Synthesis of 3D ordered porous polystyrene using silica template 期刊论文 OAI收割 CHINESE SCIENCE BULLETIN, 2001, 卷号: 46, 期号: 4, 页码: 306-308 作者: Rong, JH; Yang, ZZ; Qi, K; Jin, XG \| 收藏 \| 浏览/下载：23/0 \| 提交时间：2019/04/09 Template Synthesis Colloidal Silica Three-dimensional Order Macroporous Polystyrene