中国科学院机构知识库网格系统: 检索

浏览/检索结果: 共7条，第1-7条

帮助

条数/页：排序方式：
	Characteristics and driving factors of oceanic oxygen minimum zone (OMZ) in the context of global change 期刊论文 OAI收割 SCIENCE CHINA-EARTH SCIENCES, 2026, 页码: 13 作者: Ma, Jun; Song, Jinming; Li, Xuegang; Yuan, Huamao; Duan, Liqin \| 收藏 \| 浏览/下载：1/0 \| 提交时间：2026/06/02 Oxygen minimum zone (OMZ) Hypoxia Ocean Basic characteristics
	Research Progress on Characteristics of Marine Natural Gas Hydrate Reservoirs 期刊论文 OAI收割 ENERGIES, 2024, 卷号: 17, 期号: 17, 页码: 23 作者: Yan, Jiajia; Yan, Kefeng; Huang, Ting; Mao, Minghang; Li, Xiaosen \| 收藏 \| 浏览/下载：2/0 \| 提交时间：2025/11/20 natural gas hydrate reservoir characteristics basic physical properties test method and technology
	The research on statistical properties of TDI-CCD imaging noise (EI CONFERENCE) 会议论文 OAI收割 International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Imaging Detectors and Applications, May 24, 2011 - May 26, 2011, Beijing, China Gu Y.-Y.; Shen X.-H.; He G.-X. 收藏 \| 浏览/下载：46/0 \| 提交时间：2013/03/25 TDI-CCD can improve the sensitivity of space camera without any degradation of spatial resolution which is widely used in aerospace imaging devices. The article describes the basic working principle and application characteristics of TDI-CCD devices analyses the composition of TDI-CCD imaging noise and propose a new method to analyze TDI-CCD imaging noise with statistical probability distribution. In order to estimate the distribution of gray values affect by noise we introduced the concept of skewness and kurtosis. We design an experiment using constant illumination light source take image with TDI-CCD working at different stage such as stage 16 stage 32 stage 48 stage 64 and stage 96 analyse the characteristics of image noise with the method we proposed experimental results show that the gray values approximately meet normal distribution in large sample cases. 2011 SPIE.
	Rearrangeable nonblocking 88 matrix optical switches based on extended banyan network (EI CONFERENCE) 会议论文 OAI收割作者: Zhang Y. 收藏 \| 浏览/下载：44/0 \| 提交时间：2013/03/25 Based on the CROSSBAR network (CN) and the BANYAN network (BN) 8 matrix optical switch two new rearrangeable nonblocking constructions of extended BANYAN network (EBN) are proposed for implementing 88 optical matrix switch. The interconnection characteristics of these two types of rearrangeable nonblocking EBN were studied optical insertion loss of 4.6 dB and the logic program for driving switching units was provided. The calculated insertion loss was 3.3 dB for 88 optical matrix switch. Silica waveguide 88 matrix optical switch was designed and fabricated according to the calculated results. The silica waveguide propagation loss of 0.1 dB/cm and waveguide-fiber coupling loss of 0.5dB/point were measured. With the fabricated 87times cross-talk of -38 dB polarization dependent loss of 0.4 dB averaged switching power of 1.6 W and switching time of 1 ms were achieved. A basic agreement between experimental results and theoretical calculated values was achieved.
	Analysis and design of No-Reference Image Quality Assessment (EI CONFERENCE) 会议论文 OAI收割 2008 International Conference on MultiMedia and Information Technology, MMIT 2008, December 30, 2008 - December 31, 2008, Three Gorges, China 作者: Wang L.; Wang L.; Wang L. 收藏 \| 浏览/下载：32/0 \| 提交时间：2013/03/25 No-Reference (NR) Image Quality Assessment (IQA) seeks to assign quality scores that are consistent with human perception but without an explicit comparison with the reference image. Unfortunately the field of NR IQA has been largely unexplored. The basic problems in NR IQA are discussed in this paper. and several methods used in NR IQA are explained and analyzed. Finally an overall NR IQA method is designed. It should be a synthetical index which applying fuzzy measures and fuzzy integrals incorporating Human Vision System (HVS) characteristics and adhering to the philosophy of quantifying quality through blind distortion measurement. 2008 IEEE.
	电子束蒸发镀膜速率控制期刊论文 OAI收割中国激光, 2008, 卷号: 35, 期号: 10, 页码: 1591, 1594 王善成; 方明; 易葵; 邵淑英; 范正修收藏 \| 浏览/下载：1614/209 \| 提交时间：2009/09/22 薄膜薄膜工艺速率控制比列积分微分控制 Basic principles Closed-loop controls Control parameters Evaporation characteristics Film process Improved processes Proportion integral differential Rate control Rate controls
	Rearrangeable nonblocking 88 matrix optical switch based on silica waveguides and extended banyan network (EI CONFERENCE) 会议论文 OAI收割 Science and Technology of Dielectrics for Active and Passive Photonic Devices - 210th Electrochemical Society Meeting, October 29, 2006 - November 3, 2006, Cancun, Mexico 作者: Zhang Y. 收藏 \| 浏览/下载：47/0 \| 提交时间：2013/03/25 Based on the CROSSBAR network (CN) and the BANYAN network (BN) two new rearrangeable nonblocking constructions of extended BANYAN network (EBN) were proposed for implementing 88 optical matrix switch. The interconnection characteristics of these two types of rearrangeable nonblocking EBN were studied and the driver logic program of switching units was provided. The calculated insertion loss is 3.3 dB for 88 optical matrix switch. Silica waveguide 88 matrix optical switch was designed and fabricated according to the calculated results. The silica waveguide propagation loss of 0.1 dB/cm and waveguide-fiber coupling loss of 0.5dB/point were measured out. With the fabricated 88 matrix optical switch optical insertion loss of 4.6 dB cross-talk of -38 dB polarization dependent loss of 0.4 dB averaged switching power of 1.6 W and switching time of 1 ms were achieved. A basic agreement between experimental results and theoretical calculated values was achieved. copyright The Electrochemical Society.