中国科学院机构知识库网格系统: 检索

Thermal radiation and chemically reactive aspects of mixed convection flow using water base nanofluids: Tiwari and Das model 期刊论文 OAI收割
WAVES IN RANDOM AND COMPLEX MEDIA, 2021, 页码: 31
作者: Elkotb, Mohamed Abdelghany; Hamid, Aamir; Khan, M. Riaz; Khan, Muhammad Naveed; Galal, Ahmed M.

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收藏 | 浏览/下载：36/0 | 提交时间：2022/04/02

Dynamic Activation of Adsorbed Intermediates via Axial Traction for the Promoted Electrochemical CO2 Reduction 期刊论文 OAI收割
Angewandte Chemie - International Edition, 2021, 卷号: 60, 期号: 8, 页码: 4192-4198
作者: Wang, Xinyue; Wang, Yu; Sang, Xiahan; Zheng, Wanzhen; Zhang, Shihan

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收藏 | 浏览/下载：90/0 | 提交时间：2021/09/06

Nickel compounds Atoms Carbon dioxide Coordination reactions Electrocatalysts Electronic structure Nitrogen Oxygen Reduction Adsorbed intermediates Faradic efficiency Local environments Metal centers Nitrogen ligand Overall reactions Potential windows Traction effects

Contributions of Climatic Factors to Interannual Variability of the Vegetation Index in Northern China Grasslands 期刊论文 OAI收割
JOURNAL OF CLIMATE, 2020, 卷号: 33, 期号: 1, 页码: 175-183
作者: Zhao, Wei; Hu, Zhongmin; Guo, Qun; Wu, Genan; Chen, Ruru

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收藏 | 浏览/下载：26/0 | 提交时间：2020/05/19

Biosphere-atmosphere interaction Variational analysis Local effects Regional effects Vegetation-atmosphere interactions

Topographic Controls on Vegetation Changes in Alpine Tundra of the Changbai Mountains 期刊论文 OAI收割
FORESTS, 2018, 卷号: 9, 期号: 12, 页码: 13
作者: Wu, Miaomiao; He, Hong S.; Zong, Shengwei; Tan, Xinyuan

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收藏 | 浏览/下载：48/0 | 提交时间：2019/06/04

alpine tundra of the Changbai Mountains vegetation changes mountain topographic aspect local topographic aspect scale effects

Coal permeability maps under the influence of multiple coupled processes 期刊论文 OAI收割
INTERNATIONAL JOURNAL OF COAL GEOLOGY, 2018, 卷号: 187, 页码: 71-82
作者: Zhang, Shouwen; Liu, Jishan; Wei, Mingyao; Elsworth, Derek

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收藏 | 浏览/下载：53/0 | 提交时间：2018/06/05

Permeability map Overlapping approach Global strain Local effects Coupled processes

Effect of nitridation on visible light photocatalytic behavior of microporous (Ag, Ag2O) co-loaded TiO2 期刊论文 OAI收割
MICROPOROUS AND MESOPOROUS MATERIALS, 2017, 卷号: 240, 页码: 137-144
作者: Xiong, Fengqiang; Yang, Minghui; Zou, Mingming; Liu, Honghong; Feng, Lu

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收藏 | 浏览/下载：29/0 | 提交时间：2019/06/20

Visible Light Photocatalysis Tio2 Local Surface Plasmonic Resonance Effects Heterojunction Nitridation

Semi-parametric inference for semi-varying coefficient panel data model with individual effects 期刊论文 OAI收割
JOURNAL OF MULTIVARIATE ANALYSIS, 2017, 卷号: 154, 页码: 262-281
作者: Hu, Xuemei

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收藏 | 浏览/下载：23/0 | 提交时间：2018/07/30

Panel data Fixed effects Random effects Local linear smoothing Semi-varying coefficient model Bootstrap procedure

Benchmark assessment of coal permeability models on the accuracy of permeability prediction 期刊论文 OAI收割
FUEL, 2014, 卷号: 132, 页码: 194-203
作者: Peng, Yan; Liu, Jishan; Zhu, Wancheng; Pan, Zhejun; Connell, Luke

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收藏 | 浏览/下载：27/0 | 提交时间：2018/06/05

Benchmark assessment Coal permeability Boundary effects Local equilibrium

A Local Image Enhancement Method Based on Adjacent Pixel Gray Order-preserving Principle 会议论文 OAI收割
5th International Symposium on Photoelectronic Detection and Imaging (ISPDI) - Infrared Imaging and Applications, Beijing, June 25-27, 2013
作者: Fan XP(范晓鹏); Cai TF(蔡铁峰); Zhu F(朱枫)

收藏 | 浏览/下载：35/0 | 提交时间：2013/12/26

The paper is committed in local image enhancement. At first, the authors propose an adjacent pixel gray order-preserving principle. Adjacent pixel gray order-preserving principle is the basement of local enhancement method which ensures that there is no distortion in processed image. And then, the authors propose an iterative algorithm, which could stretch gray-scale difference of adjacent pixels in premise of not changing gray magnitude relationship between adjacent pixels. At last, the authors propose a totally reference image quality assessment method based on adjacent pixel gray order-preserving principle. According to this quality assessment method, the authors made a set of comparative experiments with local histogram equalization and method. Experimental results show that the proposed enhancement method can get higher score and provide better visual effects, fully demonstrating its effectiveness. According to this quality assessment method, the proposed method shows a good effectiveness, through experimental results and comparison with local histogram equalization method.

Research on infrared dim-point target detection and tracking under sea-sky-line complex background (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, May 24, 2011 - May 24, 2011, Beijing, China
作者: Dong Y.-X.; Zhang H.-B.; Li Y.; Li Y.; Li Y.

收藏 | 浏览/下载：109/0 | 提交时间：2013/03/25

Target detection and tracking technology in infrared image is an important part of modern military defense system. Infrared dim-point targets detection and recognition under complex background is a difficulty and important strategic value and challenging research topic. The main objects that carrier-borne infrared vigilance system detected are sea-skimming aircrafts and missiles. Due to the characteristics of wide field of view of vigilance system the target is usually under the sea clutter. Detection and recognition of the target will be taken great difficulties.There are some traditional point target detection algorithms such as adaptive background prediction detecting method. When background has dispersion-decreasing structure the traditional target detection algorithms would be more useful. But when the background has large gray gradient such as sea-sky-line sea waves etc.The bigger false-alarm rate will be taken in these local area.It could not obtain satisfactory results. Because dim-point target itself does not have obvious geometry or texture feature in our opinion from the perspective of mathematics the detection of dim-point targets in image is about singular function analysis.And from the perspective image processing analysis the judgment of isolated singularity in the image is key problem. The foregoing points for dim-point targets detection its essence is a separation of target and background of different singularity characteristics.The image from infrared sensor usually accompanied by different kinds of noise. These external noises could be caused by the complicated background or from the sensor itself. The noise might affect target detection and tracking. Therefore the purpose of the image preprocessing is to reduce the effects from noise also to raise the SNR of image and to increase the contrast of target and background. According to the low sea-skimming infrared flying small target characteristics the median filter is used to eliminate noise improve signal-to-noise ratio then the multi-point multi-storey vertical Sobel algorithm will be used to detect the sea-sky-line so that we can segment sea and sky in the image. Finally using centroid tracking method to capture and trace target. This method has been successfully used to trace target under the sea-sky complex background. 2011 Copyright Society of Photo-Optical Instrumentation Engineers (SPIE).