中国科学院机构知识库网格系统: 检索

Evaluation for effects of variable Martian upper atmosphere on ionospheric peak electron density based on the MGS RO observation 期刊论文 OAI收割
ICARUS, 2023, 卷号: 391, 页码: 11
作者: Chen, Yiding; Liu, Libo; Le, Huijun; Zhang, Hui; Zhang, Ruilong

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收藏 | 浏览/下载：24/0 | 提交时间：2023/03/31

Mars Ionospheres Peak electron density Thermospheric scale height

A Data-Characteristic-Aware Latent Factor Model for Web Services QoS Prediction 期刊论文 OAI收割
IEEE TRANSACTIONS ON KNOWLEDGE AND DATA ENGINEERING, 2022, 卷号: 34, 期号: 6, 页码: 2525-2538
作者: Wu, Di; Luo, Xin; Shang, Mingsheng; He, Yi; Wang, Guoyin

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收藏 | 浏览/下载：39/0 | 提交时间：2022/08/22

Web Service quality-of-service QoS latent factor analysis density peak data-characteristic-aware missing data big data topological neighborhood noise data service selection data science

Method to Address Brittle Rock Strength Scatter Through Fracture Density 期刊论文 OAI收割
ROCK MECHANICS AND ROCK ENGINEERING, 2019, 卷号: 52, 期号: 9, 页码: 3485-3491
作者: Wang, Jie; Ma, Fengshan

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收藏 | 浏览/下载：54/0 | 提交时间：2019/12/04

Fracture density Size effect New strength index Peak load

The influence of temporal and spatial variations on phase separation in debris flow deposition 期刊论文 OAI收割
LANDSLIDES, 2019, 卷号: 16, 期号: 3, 页码: 497-514
作者: Wang, Fei; Wang, Jiading; Chen, Xiaoqing; Chen, Jiangang

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收藏 | 浏览/下载：120/0 | 提交时间：2019/04/15

Debris flow Peak discharge Flow density Experimental analysis Deceleration baffles

Modified Method for Estimating Organic Carbon Density in Discontinuous Karst Soil Using Ground-Penetrating Radar and Geostatistics 期刊论文 OAI收割
Journal of Mountain Science, 2015, 卷号: 12, 期号: 5, 页码: 1229-1240
作者: LI Lei; XIA Yin-hang; LIU Shu-juan; ZHANG Wei; CHEN Xiang-bi

收藏 | 浏览/下载：19/0 | 提交时间：2015/09/22

Discontinuous soil Organic carbon density Soil distribution Estimation method Ground penetrating radar Karst Peak cluster depression

Comparison between ionospheric character parameters retrieved from FORMOSAT3 measurement and ionosonde observation over China 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2014, 卷号: 57, 期号: 11, 页码: 3625-3632
作者: Sun Ling-Feng; Zhao Bi-Qiang; Yue Xin-An; Mao Tian

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收藏 | 浏览/下载：12/0 | 提交时间：2018/09/26

COSMIC Ionosonde The peak electron density The peak height

Comparison between ionospheric character parameters retrieved from FORMOSAT3 measurement and ionosonde observation over China 期刊论文 OAI收割
CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION, 2014, 卷号: 57, 期号: 11, 页码: 3625-3632
作者: Sun Ling-Feng; Zhao Bi-Qiang; Yue Xin-An; Mao Tian

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收藏 | 浏览/下载：23/0 | 提交时间：2018/09/26

COSMIC Ionosonde The peak electron density The peak height

Fabrication and photoluminescence of ZnS: Mn2+ nanowires/ZnO quantum dots/SiO2 heterostructure (EI CONFERENCE) 会议论文 OAI收割
作者: Yang L.; Wang D.; Wang Y.; Wang Y.; Wang Y.

收藏 | 浏览/下载：24/0 | 提交时间：2013/03/25

In this paper we demonstrated the encapsulation of ZnS: Mn2+ nanowires (NWs) and ZnO quantum dots (QDs) with a layer of mesoporous SiO 2 shell for the purpose of integrating dual emission property into one common nanostructure. The average diameter of ZnS: Mn2+ NWs ZnO QDs and ZnS: Mn2+ / ZnO@SiO2 heterostructure was about 10 nm 6 nm and 22 nm respectively. Within ZnS: Mn2+ / ZnO@SiO 2 nanocomposites the intensity of the yellow-orange emission contributed by ZnS: Mn2+ NWs and the UV emission contributed by ZnO QDs was three and ten times higher than their individual components respectively. The fluorescence intensity ratio of the dual emission can be tuned by adjusting the hydrolysis time of tetraethyl orthosilicate. The peak energy of the yellow-orange and UV emission showed blueshift and redshift as increasing the temperature respectively. The anomalous enhancement of the integrated intensity for the UV emission with the temperature indicated that the high surface state density existing in ZnO QDs can overrun the influence of temperature quenching and even alter the photoluminescent properties. 2010 American Institute of Physics.

Analysis of laser jamming to satellite-based detector (EI CONFERENCE) 会议论文 OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者: Guo L.-H.; Guo R.-H.; Wang S.-W.

收藏 | 浏览/下载：30/0 | 提交时间：2013/03/25

The reconnaissance satellite communication satellite and navigation satellite used in the military applications have played more and more important role in the advanced technique wars and already become the significant support and aid system for military actions. With the development of all kinds of satellites anti-satellite laser weapons emerge as the times require. The experiments and analyses of laser disturbing CCD (charge coupled detector) in near ground have been studied by many research groups but their results are not suitable to the case that using laser disturbs the satellite-based detector. Because the distance between the satellite-based detector and the ground is very large it is difficult to damage it directly. However the optical receive system of satellite detector has large optical gain so laser disturbing satellite detector is possible. In order to determine its feasibility the theoretical analyses and experimental study are carried out in the paper. Firstly the influence factors of laser disturbing satellite detector are analyzed in detail which including laser power density on the surface of the detector after long distance transmission and laser power density threshold for disturbing etc. These factors are not only induced by the satellite orbit but dependence on the following parameters: laser average power in the ground laser beam quality tracing and aiming precision and atmospheric transmission. A calculation model is developed by considering all factors which then the power density entering into the detector can be calculated. Secondly the laser disturbing experiment is performed by using LD (laser diode) with the wavelength 808 nm disturbing CCD 5 kilometer away which the disturbing threshold value is obtained as 3.5510-4mW/cm2 that coincides with other researcher's results. Finally using the theoretical model the energy density of laser on the photosensitive surface of MSTI-3 satellite detector is estimated as about 100mW/cm2 which is largely exceed the disturbing threshold and therefore verify the feasibility of using this kind of laser disturbing the satellite-based detector. According to the results. using the similar laser power density absolutely saturate the requirements to laser disturbing satellite-based detector. If considering the peak power of pulsed laser even decrease laser average power it is also possible to damage the detector. This result will provide the reliable evidences to evaluate the effect of laser disturbing satellite-based detector. 2009 SPIE.

Seasonal and latitudinal differences of the saturation effect between ionospheric NmF2 and solar activity indices 期刊论文 OAI收割
Journal of Geophysical Research-Space Physics, 2009, 卷号: 114, 页码: A10303
Ma, R. P.; Xu, J. Y.; Wang, W. B.; Yuan, W.

收藏 | 浏览/下载：14/0 | 提交时间：2014/04/30

international reference ionosphere peak electron-density cycle variations global-model radio noise f-region euv fof2 winds atmosphere