中国科学院机构知识库网格系统: 检索

Multi-source underwater DOA estimation using PSO-BP neural network based on high-order cumulant optimization 期刊论文 OAI收割
CHINA COMMUNICATIONS, 2023, 页码: 18
作者: Chen, Haihua; Zhang, Jingyao; Jiang, Bin; Cui, Xuerong; Zhou, Rongrong

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收藏 | 浏览/下载：18/0 | 提交时间：2023/12/04

Direction-of-arrival estimation Estimation Neural networks Mathematical models Training Covariance matrices Biological neural networks particle swarm optimization (PSO) algorithm PSO-BP neural network gaussian colored noise multiple sources higher-order cumulant

Hanzhong bronzes and highly radiogenic lead in Shang period China 期刊论文 OAI收割
JOURNAL OF ARCHAEOLOGICAL SCIENCE, 2019, 卷号: 101, 页码: 131-139
作者: Chen, Kunlong; Mei, Jianjun; Rehren, Thilo; Liu, Siran; Yang, Wei

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收藏 | 浏览/下载：46/0 | 提交时间：2019/03/04

Lead isotopes Provenance Shang China Bronze Highly radiogenic lead Regional specialisation Multiple-direction exchange

Analysis of the dynamic mechanical property of multiple direction impact protection structure inspired by C60 molecule 期刊论文 OAI收割
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2019, 卷号: 233, 期号: 17, 页码: 5919-5932
作者: Shen XH(沈昕慧); Liu JG(刘金国); Zhang PW(张朋伟); Ni ZY(倪智宇); Liu YW(刘玉旺)

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收藏 | 浏览/下载：32/0 | 提交时间：2019/08/04

Bio-inspired C60 (fullerene) molecular structure impact protection dynamic mechanical property drop multiple direction

Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles 期刊论文 OAI收割
QUATERNARY SCIENCE REVIEWS, 2016, 卷号: 145, 期号: 0, 页码: 71-81
作者: Dong, GC (Dong, Guocheng); Huang, FX (Huang, Feixin); Caffee, MW (Caffee, Marc W.); Huang, FX; Yi, CL (Yi, Chaolu)

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收藏 | 浏览/下载：27/0 | 提交时间：2017/09/26

Glacial HisTories From The East Antarctic Ice Sheet (Eais) Provide Keys To UnderstAndIng Correlations Between The Eats And Global Climate. They Are Especially Helpful In The Assessment Of Global Sea Level Change And As a Means Of Quantifying The Magnitude Of pAst Glacial Activity And The RAte At Which Ice Responded To climAte Change. Given The Significance Of Eais Glacial hisTories It Is Imperative That More Glacial Chronologic Data For thIs Region Be Obtained Especially For The Mid-to-lAte Pleistocene. We Report Cosmogenic Be-10 Surface Exposure DAtIng Results From Glacially Transported Cobbles Embedded In Blue-ice moraIne MAterial At Mount hardIng The Grove Mountains Eais. Forty Exotic Cobbles Sampled AlOng Two PrOfiles (a And b) On This Blue-ice MoraIne Present Apparent Exposure-ages RangIng From 7.2 To 542.2 Ka. We Explore This Scattered Dataset By UsIng PrIncipal compOnent Analysis (Pca) To Identify Statistically Significant Trends In The Data. We Identify a correlatiOn betWeen Exposure-age And Distance Of The Cobbles From Mount hardIng. In prOfile a Cobbles Further From Mount HardIng Yield Older Exposure-ages Than Those That Are Relatively Close. In Profile b Cobbles Closer To Mount HardIng Are Found To Have Relatively Older Exposure-ages. In Term Of Glacial hisTory We Suggest That The Direction Of Ice Flow Changed durIng The Period From Similar To 60 To 200 Ka And That Multiple Glacial Fluctuations Occurred In The Mid-late Pleistocene. (c) 2016 Elsevier Ltd. All Rights Reserved.

Parallelizing flow-accumulation calculations on graphics processing units-From iterative DEM preprocessing algorithm to recursive multiple-flow-direction algorithm SCI/SSCI论文 OAI收割
2012
Qin C. Z.; Zhan L. J.

收藏 | 浏览/下载：26/0 | 提交时间：2014/12/24

Parallel computing Graphics processing unit (GPU) Digital terrain analysis Flow accumulation Multiple-flow-direction algorithm (MFD) DEM preprocessing digital elevation models catchment-area extraction topmodel

Parallelizing flow-accumulation calculations on graphics processing units-From iterative DEM preprocessing algorithm to recursive multiple-flow-direction algorithm 期刊论文 OAI收割
Computers & Geosciences, 2012, 卷号: 43, 页码: 7-16
Qin C. Z.; Zhan Li Jun(占利军)

收藏 | 浏览/下载：24/0 | 提交时间：2012/09/04

Parallel computing Graphics processing unit (GPU) Digital terrain analysis Flow accumulation Multiple-flow-direction algorithm (MFD) DEM preprocessing digital elevation models catchment-area extraction topmodel

The stability design and realization of airborne platform based on TMS320F2812 (EI CONFERENCE) 会议论文 OAI收割
2011 International Conference on Mechatronic Science, Electric Engineering and Computer, MEC 2011, August 19, 2011 - August 22, 2011, Jilin, China
作者: Zhang X.; Zhang X.; Zhang X.

收藏 | 浏览/下载：40/0 | 提交时间：2013/03/25

Airborne electro-optical stable platform can isolate movement and vibration of the airframe stabilizes the optic axis of the photoelectic detector realize the observation and tracking for the object. It has comprehensive application value in army and cicil field. Most of present airborne platforms are analogic control system digital control system can improve the system general performance digital control is the development direction of platform systems. In view of the requirements of isolating disturbances and stabilizing optical axis of high-precision photoelectric guidance system a three-axis stabilized platform system centering on the rate gyro was designed. The disturbance-isolation theory of the stabilized platform was analyzed and the control structure including multiple closed-loops was designed. At last a controller of the servo system based on TMS320F2812 DSP has been designed. Experiment results meet the technical index and precision requirement and illustrate the practicability and effectiveness of the scheme. 2011 IEEE.

An approach to computing topographic wetness index based on maximum downslope gradient SCI/SSCI论文 OAI收割
2011
作者: Pei T.

收藏 | 浏览/下载：24/0 | 提交时间：2012/06/08

Topographic wetness index (TWI) Multiple flow direction algorithm (MFD) Digital terrain analysis Digital elevation model (DEM) Resolution surface saturation prediction area soil algorithms topmodel models zones

Mapping soil organic matter using the topographic wetness index: A comparative study based on different flow-direction algorithms and kriging methods SCI/SSCI论文 OAI收割
2010
作者: Yang L.; Pei T.

收藏 | 浏览/下载：37/0 | 提交时间：2012/06/08

Collocated cokriging Single-flow-direction (SFD) Multiple-flow-direction (MFD) Auto-correlation Cross-correlation Terrain variable Digital soil mapping spatial interpolation drainage networks northeast china black soil prediction elevation indicators regression topmodel models

Spatial statistical properties and scale transform analyses on the topographic index derived from DEMs in China SCI/SSCI论文 OAI收割
2009
Yong B.; Zhang W. C.; Niu G. Y.; Ren L. L.; Qin C. Z.

收藏 | 浏览/下载：17/0 | 提交时间：2012/06/08

Topographic index TOPMODEL DEM RCM GCM Downscaling Multiple flow direction algorithm digital elevation model catchment-based approach land-surface processes topmodel framework energy-balance north-america flow paths resolution water algorithms