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	Specific Responses of Soil Microbial Residue Carbon to Long-Term Mineral Fertilizer Applications to Reddish Paddy Soils 期刊论文 OAI收割 PEDOSPHERE, 2018, 卷号: 28, 期号: 3, 页码: 488-496 作者: Zhang Xinyu; Xie Juan; Yang Fengting; Dong Wenyi; Dai Xiaoqin \| 收藏 \| 浏览/下载：39/0 \| 提交时间：2019/05/23 amino sugar application rate application ratio bacterial C fungal C soil nutrient soil organic C
	Specific Responses of Soil Microbial Residue Carbon to Long-Term Mineral Fertilizer Applications to Reddish Paddy Soils 期刊论文 OAI收割 PEDOSPHERE, 2018, 卷号: 28, 期号: 3, 页码: 488-496 作者: Zhang Xinyu; Xie Juan; Yang Fengting; Dong Wenyi; Dai Xiaoqin \| 收藏 \| 浏览/下载：9/0 \| 提交时间：2019/05/23 amino sugar application rate application ratio bacterial C fungal C soil nutrient soil organic C
	Specific Responses of Soil Microbial Residue Carbon to Long-Term Mineral Fertilizer Applications to Reddish Paddy Soils 期刊论文 OAI收割 PEDOSPHERE, 2018, 卷号: 28, 期号: 3, 页码: 488-496 作者: Zhang Xinyu; Xie Juan; Yang Fengting; Dong Wenyi; Dai Xiaoqin \| 收藏 \| 浏览/下载：18/0 \| 提交时间：2019/05/23 amino sugar application rate application ratio bacterial C fungal C soil nutrient soil organic C
	Parallel transformation of K-SVD solar image denoising algorithm 会议论文 OAI收割作者: Liang, Youwen \| 收藏 \| 浏览/下载：22/0 \| 提交时间：2018/12/20 Application programming interfaces (API) - Parallel processing systems - Parallel programming - Photonics - Signal to noise ratio - White noise
	A hybrid median filter for enhancing dim small point targets and its fast implementation (EI CONFERENCE) 会议论文 OAI收割 2011 International Conference on Multimedia and Signal Processing, CMSP 2011, May 14, 2011 - May 15, 2011, Guilin, Guangxi, China Yang Q. 收藏 \| 浏览/下载：22/0 \| 提交时间：2013/03/25 Weak stars and middle altitude orbit satellites or high altitude orbit satellites are presented as dim point targets in images of astronomical observation. They have low intensity and occupy few pixels in image. In most situations the background of sky is always ununiform and there exists pulse noises. Thus results in targets submerging in background noises and low signal noise ratio (SNR). Median filter is an effective method for removing pulse noise. But it can blur image after modifying gray of non-noise pixels when image has low SNR. A hybrid median filter algorithm is proposed to process low SNR dim point targets image. The newly proposed method can suppress the pulse noises also can increase target $SNR$ and does not add extra fake targets. The time complexity of median filter is O(N2)(N is the widow size) and is difficult to implement in hardware. For quasi real time application a fast implementation of our hybrid median filter is proposed to reduce the time complexity to O(N). Experimental results show that the newly proposed algorithm is superior to ordinary median filter and fast median filter by comparing visual effect and performance. 2011 IEEE.
	Application of precision harmonic gear drive in focusing mechanism of space camera (EI CONFERENCE) 会议论文 OAI收割 5th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Smart Structures and Materials in Manufacturing and Testing, April 26, 2010 - April 29, 2010, Dalian, China 作者: Zhang X.; Zhang X.; Zhang X. 收藏 \| 浏览/下载：26/0 \| 提交时间：2013/03/25 A kind of precision harmonic gear drive in the focusing mechanism of space camera is studied which adopt external meshing complex wave transmission mode. Wave generator is combined with an elliptic cam and a flexible bearing around it. Flexspline is a structure of single wave with the same teeth. The output shaft is supported by a single cross-roller bearing. Ball screws connected the output shaft translate the rotational motion to the linear motion and drive the focusing mirror repeated moving along the linear guide. The output rigid wheel is connected with absolute encoder to detect displacement of focusing movement. It has the characteristics of big transmission ratio high precision compact structure high efficiency and smooth running etc. According to the practical application of this harmonic gear drive in the space camera the location relationship between the displacement of focusing structure and the focal plane movement is derived and the system error is analyzed its accuracy is tested with the open-loop control method. Experimental results show that transmission ratio of the instrument is 1:70 repeated positional accuracy is 2m which meet the requirements for use. 2010 SPIE.
	performance evaluation of multithreaded sparse matrix-vector multiplication using openmp 会议论文 OAI收割 11th IEEE International Conference on High Performance Computing and Communications, Seoul, SOUTH KOREA, JUN 25-27, Liu Shengfei; Zhang Yunquan; Sun Xiangzheng; Qiu RongRong \| 收藏 \| 浏览/下载：28/0 \| 提交时间：2011/03/20 Dawning S4800A1 OpenMP compute-to-memory ratio irregular memory access patterns iterative methods multithreaded sparse matrix-vector multiplication nonzero scheduling performance evaluation application program interfaces matrix multiplication multi-threading scheduling shared memory systems software performance evaluation sparse matrices vectors
	Fabrication and electron emission of carbon microtubes (EI CONFERENCE) 会议论文 OAI收割 Technical Digest of the 18th International Vacuum Nanoelectronics Conference, IVNC 2005, July 10, 2005 - July 14, 2005, Oxford, United kingdom 作者: Liu L.; Liu L.; Wang W.; Wang W. 收藏 \| 浏览/下载：40/0 \| 提交时间：2013/03/25 Carbon nanotubes have been attracting attention because of their unique physical properties and their application potential for field emission cathode. Carbon nanotubes possess the following properties favorable for field emission material such as a high aspect ratio and sharp tip high chemical stability high mechanical strength stable at high temperature. Some research works on carbon nanotubes field emitter and field emission display have been reported. Here a kind of carbon microtubes and its field emission properties are introduced. They have some different properties with carbon nanotubes and the density is lower than carbon nanotubes bundles. These carbon microtubes are directly synthesized by liquidoid epitaxy method on silicon substrates at low temperature. The field emission properties of carbon microtubes are reported too. Carbon microtubes film is synthesized in liquid by electrolysis. The graphite plate is as anode and n-silicon substrate with resistivity of 4-8 cm is as cathode. The electrolysis current is about 5-8mA/cm2 and applied voltage is 800-1500V. Temperatures of the methanol base solution is maintained at 60C in process of deposition of carbon microtubes. Carbon microtubes film is observed by scanning electron microscopy(SEM) as shown in fig.1(a b). The wall's thickness of carbon microtube is about 60nm. The diameter of carbon microtube is about 0.8 m. Raman spectrum of carbon microtubes film shows the two peaks at 1342and 1560cm-1. The field emission properties of carbon microtubes are measured in high vacuum chamber(10-5Pa). The emission area of carbon microtubes is 0.5cm 0.5cm. The threshold of field emission of the carbon microtubes film is about 3.6V/ m. Field emission property of carbon microtubes film is shown in fig.2. Another when the electric field between anode and cathode is 10V/ m the electric field distribution on single carbon microtube is also given after calculation according to electric field theory. Fig 3 shows that electric field distribution vertical section on the of single carbon microtube top with 2 m of highness. These results may help us to understand field emission properties of carbon microtubes. According to research results it is found that liquidoid synthesis is simple method to produce carbon microtubes cold cathode material and the carbon microtubes have better field emission properties. 2005 IEEE.
	V-shaped electro-optic characteristics in FLC gels (EI CONFERENCE) 会议论文 OAI收割作者: Li J.; Li J.; Li J.; Xuan L. 收藏 \| 浏览/下载：32/0 \| 提交时间：2013/03/25 The effects of polymer network formed under UV irradiation with electric field application ( 50V 5Hz) to ferroelectric liquid crystal (FLC) molecules orientation and electrooptic characteristics have been studied. The polymer network formed in SmC*phase is anisotropic and fibrils-like and a typical striped texture was observed in the cell. The FLC gels exhibit a symmetric V-shaped electrooptic characteristics with thresholdless voltage and high contrast ratio (40:1). A theory explanation of the unique properties is given by establishing a molecular orientation model and conducting a computer simulation. A good fitting of the electrooptic dynamic response of FLC gels has been obtained by introducing a potential (bulk anchoring energy) originated from the photo-cured polymer network. 2002 Taylor Francis.