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浏览/检索结果: 共10条，第1-10条 帮助

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云南梧桐(Firmiana major)的变色花传粉功能特征及遗传结构研究 学位论文  OAI收割
: 中国科学院大学, 2022
作者:  马雨倩
  |  收藏  |  浏览/下载：22/0  |  提交时间：2024/05/14
Clinical Relevance of PD-L1 Expression and CD8+T Cells' Infiltration in Patients With Lung Invasive Mucinous Adenocarcinoma 期刊论文  OAI收割
FRONTIERS IN ONCOLOGY, 2021, 卷号: 11
作者:  Xu, Xiaoling;  Li, Na;  Wang, Ding;  Chen, Wei;  Fan, Yun
  |  收藏  |  浏览/下载：56/0  |  提交时间：2021/08/31
Morphological and genetic analyses of the current major cultivars of Undaria pinnatifida at Lvshun, Dalian, the principal farming region in North China 期刊论文  OAI收割
JOURNAL OF APPLIED PHYCOLOGY, 2021, 页码: 10
作者:  Li, Xiaodong;  Pang, Shaojun;  Shan, Tifeng;  Su, Li;  Li, Jing
  |  收藏  |  浏览/下载：73/0  |  提交时间：2021/06/24
Aerodynamic shape optimization of an urban maglev train 期刊论文  OAI收割
ACTA MECHANICA SINICA, 2021, 页码: 16
作者:  Sun ZX(孙振旭);  Wang MY(王梦莹);  Wei LY(魏涟漪);  Kong FB;  Yang GW(杨国伟)
  |  收藏  |  浏览/下载：38/0  |  提交时间：2021/06/15
Factors influencing the fate of antibiotic resistance genes during thermochemical pretreatment and anaerobic digestion of pharmaceutical waste sludge 期刊论文  OAI收割
ENVIRONMENTAL POLLUTION, 2018, 卷号: 243, 页码: 1403-1413
作者:  Tong, Juan;  Lu, Xueting;  Zhang, Junya;  Angelidaki, Irini;  Wei, Yuansong
  |  收藏  |  浏览/下载：43/0  |  提交时间：2019/06/19
The characteristics and functions of a miniature inverted-repeat transposable element TaMITE81 in the 5' UTR of TaCHS7BL from Triticum aestivum 期刊论文  OAI收割
molecular genetics and genomics, 2016, 卷号: 291, 期号: 5, 页码: 1991-1998
作者:  Xi, Xinyuan;  Li, Na;  Li, Shiming;  Chen, Wenjie;  Zhang, Bo
收藏  |  浏览/下载：39/0  |  提交时间：2016/12/19
The characteristics and functions of a miniature inverted-repeat transposable element tamite81 in the 5' utr of tachs7bl from triticum aestivum 期刊论文  iSwitch采集
Molecular genetics and genomics, 2016, 卷号: 291, 期号: 5, 页码: 1991-1998
作者:  Xi, Xinyuan;  Li, Na;  Li, Shiming;  Chen, Wenjie;  Zhang, Bo
收藏  |  浏览/下载：63/0  |  提交时间：2019/05/09
An improved hyperspectral classification algorithm based on back-propagation neural networks (EI CONFERENCE) 会议论文  OAI收割
2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2012, June 1, 2012 - June 3, 2012, Nanjing, China
作者:  Yu P.;  Yu P.
收藏  |  浏览/下载：43/0  |  提交时间：2013/03/25
In this paper  a new method is proposed to improve the classification performance of hyperspectral images by combining the principal component analysis (PCA)  genetic algorithm (GA)  and artificial neural networks (ANNs). First  some characteristics of the hyperspectral remotely sensed data  such as high correlation  high redundancy  etc.  are investigated. Based on the above analysis  we propose to use the principal component analysis to capture the main information existing in the hyperspectral images and reduce its dimensionality consequently. Next  we use neural networks to classify the reduced hyperspectral data. Since the back-propagation neural network we used is easy to suffer from the local minimum problem  we adopt a genetic algorithm to optimize the BP network's weights and the threshold. Experimental results show that the classification accuracy is improved and the time of calculation is reduced as well. 2012 IEEE.  
Channel characteristics and formation mechanism of Ganjiang River 期刊论文  OAI收割
The Journal of Chinese Geography, 2000, 卷号: 10, 期号: 4, 页码: 422
作者:  Chen Zhiqing
  |  收藏  |  浏览/下载：21/0  |  提交时间：2021/03/16
Channel characteristics and formation mechanism of Ganjiang River 期刊论文  OAI收割
The Journal of Chinese Geography, 2000, 卷号: 10, 期号: 4, 页码: 422
作者:  Chen Zhiqing
  |  收藏  |  浏览/下载：20/0  |  提交时间：2021/03/16