中国科学院机构知识库网格系统: 检索

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	Evaluation of relative pollen productivities in temperate China for reliable pollen-based quantitative reconstructions of Holocene plant cover 期刊论文 OAI收割 FRONTIERS IN PLANT SCIENCE, 2023, 卷号: 14, 页码: 14 作者: Li, Furong; Gaillard, Marie-Jose; Xie, Siqi; Huang, Kangyou; Cui, Qiaoyu \| 收藏 \| 浏览/下载：19/0 \| 提交时间：2023/12/22 China relative pollen productivity evaluation observation of regional vegetation REVEALS model
	Does palynological diversity reflect floristic diversity? A case study from Northeast China 期刊论文 OAI收割 SCIENCE CHINA-EARTH SCIENCES, 2023, 卷号: 66, 期号: 9, 页码: 2097-2108 作者: Cui, Yifan; Qin, Feng; Zhao, Yan; Cui, Qiaoyu; Geng, Rongwei \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2023/10/09 Northeast China Modern palynological diversity Floristic diversity Richness and evenness Community dissimilarity index REVEALS model
	Testing the Effect of Relative Pollen Productivity on the REVEALS Model: A Validated Reconstruction of Europe-Wide Holocene Vegetation 期刊论文 OAI收割 LAND, 2023, 卷号: 12, 期号: 5, 页码: 31 作者: Serge, M. A.; Mazier, F.; Fyfe, R.; Gaillard, M. -J.; Klein, T. \| 收藏 \| 浏览/下载：25/0 \| 提交时间：2023/10/09 Europe quantitative past land cover Holocene pollen data REVEALS model relative pollen productivity validation
	Influence of plant coverage and environmental variables on pollen productivities: evidence from northern China 期刊论文 OAI收割 FRONTIERS OF EARTH SCIENCE, 2020, 页码: 14 作者: Zhang, Kaixiu; Qin, Wen; Tian, Fang; Cao, Xianyong; Li, Yuecong \| 收藏 \| 浏览/下载：37/0 \| 提交时间：2021/01/08 pollen influx pollen productivity vegetation reconstruction REVEALS model northern China
	A case study of the role of climate, humans, and ecological setting in Holocene fire history of northwestern Europe SCI/SSCI论文 OAI收割 2015 作者: Cui Q. Y.; Gaillard, M. J.; Olsson, F.; Greisman, A.; Lemdahl, G. 收藏 \| 浏览/下载：36/0 \| 提交时间：2015/12/09 fire history land-use history charcoal analysis Landscape Reconstruction Algorithm (LRA) Holocene Smaland Sweden landscape reconstruction algorithm new-south-wales fagus-sylvatica forest history reveals-model quantitative reconstructions regional vegetation charcoal analyses plant abundance land-use
	The analysis for the reason of limit cycle generated by friction in servo system (EI CONFERENCE) 会议论文 OAI收割 2010 International Conference on Computer, Mechatronics, Control and Electronic Engineering, CMCE 2010, August 24, 2010 - August 26, 2010, Changchun, China 作者: Li M. 收藏 \| 浏览/下载：20/0 \| 提交时间：2013/03/25 In this paper limit cycle which results from friction during low-velocity servo system has been discussed. First the piecewise linearization method has been applied to change nonlinear stribeck model to linear model. Second with analysis of equilibrium property it is proved the existence of limit cycle and its certain region. The analysis reveals that it is because of stability of equilibrium repeatedly changing results in the limit cycle during low-velocity state. In addition it also points that the key point to avoid this phenomenon is to keep robust stability of the close-loop system. 2010 IEEE.
	Real-time restoration for motion-blurred color images by multichannel combination processing (EI CONFERENCE) 会议论文 OAI收割 1st International Workshop on Education Technology and Computer Science, ETCS 2009, March 7, 2009 - March 8, 2009, Wuhan, Hubei, China 作者: Sun H.; Sun H.; Li S. 收藏 \| 浏览/下载：46/0 \| 提交时间：2013/03/25 A fast algorithm is proposed to restore the color images degraded in a deterministic way by motion- blurred by multichannel combination processing. Based on the color space conversion model the point spread functions of the image motion on each plane of YUV422 image can be achieved. The U V plane of YUV422 images are combined to form a new UV plane which has the same size as Y plane. Then the Y UV plane are packed into a two dimensional complex array which can be transformed directly by FFT and result a composite frequency spectrum. Wiener filter is applied to filter Y UV spectrums separated from the composite spectra. On Graphics Processing Unit (GPU) platform the proposed algorithm can restore a 1024x1024 24-bit motion-blurred color image in 7.95ms and the PSNR of the restored image is 27.12 which reveals a good restoration performance. 2009 IEEE.