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浏览/检索结果: 共7条，第1-7条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 A Preliminary Experimental and Numerical Study on the Applicability of Liquid CO2 Fracturing in Sparse Sandstone 期刊论文  OAI收割 ROCK MECHANICS AND ROCK ENGINEERING, 2023, 卷号: -, 期号: -, 页码: - 作者:  Ma, Dongdong;  Wu, Yu;  Ma, Xiao;  Hu, Dawei;  Zhou, Hui   |  收藏  |  浏览/下载：19/0  |  提交时间：2023/08/02 Sparse sandstone  Liquid CO2  Interlayer  Permeation effect   Design of Power-Imbalanced SCMA Codebook 期刊论文  OAI收割 IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 2022, 卷号: 71, 期号: 2, 页码: 2140-2145 作者:  Li, Xudong;  Gao, Zhicheng;  Gui, Yiming;  Liu, Zilong;  Xiao, Pei   |  收藏  |  浏览/下载：38/0  |  提交时间：2022/12/07 NOMA  Genetic algorithms  Electronic mail  Downlink  Sparse matrices  Codes  Receivers  Sparse code multiple access (SCMA)  power imbalance  near-far effect  minimum Euclidean distance (MED)  minimum product distance (MPD)   A White-headed langurs impulsive state feedback control model with sparse effect and continuous delay 期刊论文  OAI收割 COMMUNICATIONS IN NONLINEAR SCIENCE AND NUMERICAL SIMULATION, 2017, 卷号: 50, 页码: 88-102 作者:  Chen, Shidong;  Xu, Weijian;  Chen, Lansun;  Huang, Zhonghao   |  收藏  |  浏览/下载：25/0  |  提交时间：2018/07/30 White-headed langurs  Sparse effect  Continuous delay  Impulsive state feedback control  Order-1 periodic solution   A SPARSE OPTIMIZATION METHOD FOR MASKING EFFECT REMOVAL IN NOISE SYNTHETIC APERTURE RADAR 会议论文  OAI收割 36th IEEE International Geoscience and Remote Sensing Symposium (IGARSS), Beijing, PEOPLES R CHINA, JUL 10-15, 2016 作者:  Dong, Xiao;  Zhang, Yunhua;  Zhai, Wenshuai 收藏  |  浏览/下载：24/0  |  提交时间：2017/04/07 Compressed sensing  inverse problem  masking effect  noise radar  sparse optimization  synthetic aperture radar (SAR)   气动畸变退化图像复原方法研究 学位论文  OAI收割 工学博士, 中国科学院自动化研究所: 中国科学院大学, 2014 作者:  胡文锐 收藏  |  浏览/下载：111/0  |  提交时间：2015/09/02 气动畸变退化效应  非刚体图像配准  非局部稀疏编码  张量分解  可调整核回归  aero-optic effect  nonrigid image registration  nonlocally sparse coding  tensor decompostion  steer kernel regression   气动光学畸变图像复原和视觉目标跟踪方法研究 学位论文  OAI收割 工学博士, 中国科学院自动化研究所: 中国科学院大学, 2013 作者:  谢源 收藏  |  浏览/下载：118/0  |  提交时间：2015/09/02 气动光学效应  畸变图像复原  Bregman迭代  视觉目标跟踪  稀疏编码  aero-optic effect  distorted image restoration  Bregman iteration  visual tracking  sparse coding   The synthesis and field emission property of carbon nanotubes on carbon fibers substrate (EI CONFERENCE) 会议论文  OAI收割 Technical Digest of the 20th International Vacuum Nanoelectronics Conference, IVNC 07, July 8, 2008 - July 12, 2008, Chicago, IL, United states Leyong Z.; Weibiao W.; Jingqiu L.; Yuxue X.; Da L.; Song C.; Haifeng Z. 收藏  |  浏览/下载：33/0  |  提交时间：2013/03/25 Using ferrocene as catalyst precursor  C2H2 as carbon source  carbon nanotubes (CNTs) with uniform density were synthesized on carbon fibers substrate by floating catalyst method. The morphology and microstructure were characterized by field emission scanning electron microscope (FESEM) and high-resolution transmission electron microscopy (HRTEM). The observation showed that the length of CNTs is about 2 m  the average space between adjacent CNTs is about 300 nm and the diameter of CNT is about 45 nm. The less dense "short and stubby" aligned CNTs films should have good electron field emission characteristics. The results of field emission showed that the emission current of CNTs/carbon fibers was 5 A at the field of 2.5 V/m  and the emission current can be 280 A with a field of 7 V/m (the specimen area is 0.25 cm2 and the distance between cathode and anode is 200 m). The calculation based on the F-N plot indicated that the field enhancement factor of CNTs tip is 499122. Using the conductivity and chemical stability of carbon fibers and the uniform and sparse density distribution of CNTs on carbon fibers substrate  the tip predominance of carbon nanotubes can be exerted  and simultaneously the effect of screening effects between adjacent carbon nanotubes on the field emission performance can also be effectively decreased. The CNTs synthesized on carbon fibers substrate has many predominances for the fabrication of cold cathode devices. For example  using the removability of carbon fibers  the cathode of CNTs/carbon fibers can be arbitrarily moved  enlaced or combined to form different patterns  and the cathode of CNTs/carbon fibers can be also fabricated in large size. Therefore  CNTs/carbon fibers may have potential application in field emission displays.