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银行集中信用违约预警模型 会议论文
社会经济发展转型与系统工程——中国系统工程学会第17届学术年会
作者:  张国兴;  刘鹏;  汪应洛;  郭菊娥
收藏  |  浏览/下载：0/0  |  提交时间：2015/06/18
聚N;N-二乙基丙烯酰胺的分子链特性研究 会议论文
中国化学会成立80周年第十六届全国化学热力学和热分析学术会议
作者:  方建;  赵继华;  沈伟国
收藏  |  浏览/下载：3/0  |  提交时间：2015/06/25
丙烯酸与N;N-二乙基丙烯酰胺共聚物水溶液的分子动力学研究 会议论文
中国化学会成立80周年第十六届全国化学热力学和热分析学术会议
作者:  方建;  赵继华;  沈伟国
收藏  |  浏览/下载：2/0  |  提交时间：2015/06/25
结晶紫碱性褪色反应在二元体系近临界区的动力学研究 会议论文
中国化学会成立80周年第十六届全国化学热力学和热分析学术会议
作者:  杜中玉;  沈伟国
收藏  |  浏览/下载：2/0  |  提交时间：2015/06/25
Eu_xTb_(1-x)-ABDC金属有机框架比例荧光探针研究 会议论文
第十二届固态化学与无机合成学术会议
作者:  郭礼荣;  刘伟生
收藏  |  浏览/下载：3/0  |  提交时间：2015/06/25
Immersed nanospheres super-lithography for the fabrication of sub-70nm nanoholes with period below 700nm (EI CONFERENCE) 会议论文
2012 12th IEEE International Conference on Nanotechnology, NANO 2012, August 20, 2012 - August 23, 2012, Birmingham, United kingdom
Li S.; Shi L.; Yang Z.; Huang X.; Zhang Z.; Gao F.; Guo Y.; Yu W.; Du J.
收藏  |  浏览/下载：129/0  |  提交时间：2013/03/25
A maskless nano-lithography method by using polystyrene spheres (PSs) self-assembled on silver slab (NSSL) was proposed in [optics express  Vol. 16  No. 19 (2008) 14397]. Following that  to break the limitations in resolution and PSs period of NSSL method  in this paper  we present PSs immersed super-resolution lithography (NSISL) technology by embedding the PSs into appropriate material to improve the efficiency of the surface plasmon excitation. The energy modulating mechanism and the rules of the resolution affected by silver slab were studied by calculating and analysing the energy distribution. The curve of the lithography resolution versus the silver thickness was presented. In order to verify this method  contrast analysis was carried out with NSSL. The results show that the lithography resolution is improved efficiently. Taking a specific configuration with PS diameter of 600nm as an example  the resolution was improved to 54nm from 190nm with Ag thickness of 25nm. Based on the calculation results  we carried out the experiments. Nano holes with dimension of 75nm and period of 600nm were obtained. 2012 IEEE.  
Effects of environment factors on imaging performance of long focal length space camera 会议论文
2012
Guo Q. F.; Jin G.; Dong J. H.; Li W.; Li Y. C.; Wang H. P.; Wang K. J.; Zhao W. G.
收藏  |  浏览/下载：10/0  |  提交时间：2013/03/28
An improved hyperspectral classification algorithm based on back-propagation neural networks (EI CONFERENCE) 会议论文
2012 2nd International Conference on Remote Sensing, Environment and Transportation Engineering, RSETE 2012, June 1, 2012 - June 3, 2012, Nanjing, China
Mao W.; Yu P.; Guo B.; Xu Y.; Chen H.
收藏  |  浏览/下载：19/0  |  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.  
The measuring method for low rotational speed with the frequency difference generated by radial gratings (EI CONFERENCE) 会议论文
2012 International Applied Mechanics, Mechatronics Automation Symposium, IAMMAS 2012, September 7, 2012 - September 9, 2012, Shenyang, Liaoning, China
Guo W.-l.; Qiao Y.-f.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
A composite hardness stamp in 184 PDMS for nanostructures transfer in high fidelity (EI CONFERENCE) 会议论文
2012 12th IEEE International Conference on Nanotechnology, NANO 2012, August 20, 2012 - August 23, 2012, Birmingham, United kingdom
Li S.; Shi L.; Yang Z.; Huang X.; Zhang Z.; Gao F.; Guo Y.; Yu W.; Du J.
收藏  |  浏览/下载：13/0  |  提交时间：2013/03/25
To improve the fidelity of nanostructures in transfer process  a composite stamp with reasonable hardness distribution in 184 PDMS used to nanoimprint was studied. The stamp is composed of a stiff 184 PDMS structured layer and a soft 184 PDMS supporter layer. We studied the relationship between the hardness of the 184 PDMS and the proportion of each component in 184 PDMS. The appropriate components proportions of prepolymer and curing agent corresponding to the different region of the composite stamp were presented. The fabrication method of the stamp is also presented. Corresponding experiments were carried out by using this stamp. Kinds of nanostructures were transferred in one inch diameter area with good fidelity. The feature sizes of the structures were less than 100 nm. 2012 IEEE.  

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