中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页
机构
成果
学者
登录
注册
登陆
×
验证码:
换一张
忘记密码?
记住我
×
校外用户登录
CAS IR Grid
机构
地理科学与资源研究所 [1]
长春光学精密机械与物... [1]
自动化研究所 [1]
沈阳应用生态研究所 [1]
西安光学精密机械研究... [1]
烟台海岸带研究所 [1]
更多
采集方式
OAI收割 [6]
内容类型
期刊论文 [4]
SCI/SSCI论文 [1]
会议论文 [1]
发表日期
2020 [1]
2019 [2]
2016 [1]
2015 [1]
2010 [1]
学科主题
筛选
浏览/检索结果:
共6条,第1-6条
帮助
条数/页:
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
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
Features Combined Binary Descriptor Based on Voted Ring-Sampling Pattern
期刊论文
OAI收割
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS FOR VIDEO TECHNOLOGY, 2020, 卷号: 30, 期号: 10, 页码: 3675-3687
作者:
Liu, Hongmin
;
Zhang, Qianqian
;
Fan, Bin
;
Wang, Zhiheng
;
Han, Junwei
  |  
收藏
  |  
浏览/下载:25/0
  |  
提交时间:2021/01/07
Histograms
Feature extraction
Encoding
Task analysis
Fans
Computational efficiency
Memory management
Binary descriptor
combined features
gradient feature
intensity feature
ring-sampling pattern
voting strategy
Sampling Time Adaptive Single-Photon Compressive Imaging
期刊论文
OAI收割
IEEE PHOTONICS JOURNAL, 2019, 卷号: 11, 期号: 3
作者:
Wang, Hui
;
Yan, Qiurong
;
Li, Bing
;
Yuan, Chenglong
;
Wang, Yuhao
  |  
收藏
  |  
浏览/下载:95/0
  |  
提交时间:2019/06/27
Time-adaptive sampling
single photon compressive imaging
threshold of light intensity estimation accuracy
黄海桑沟湾水体及沉积物中微塑料污染特征研究
期刊论文
OAI收割
海洋环境科学, 2019, 卷号: 38, 期号: 2, 页码: 198-204
作者:
熊宽旭
;
赵新月
;
周倩
;
付传城
;
涂晨
  |  
收藏
  |  
浏览/下载:40/0
  |  
提交时间:2020/06/17
桑沟湾
微塑料
潮滩
丰度
空间分布
Sanggou bay
microplastics
tidal flats
abundance
spatial distribution
In recent years,research on microplastics pollution in the marine environment has been increasing,but studies on microplastics in water bodies and sediments of the bay under the influence of high-intensity human activities are still rarely reported. In this study,the pollution characteristics of microplastics in the wayer and sediments of Sanggou bay were investigated in December 2017,after the harvest of large-scale aquaculture,with the aim to study the effects of aquaculture activities and hydrodynamics on pollution characteristics and spatial distribution of microplastics in the bay. The results showed that the types of microplastics in the water and sediments of Sanggou bay were mainly fibers,fragments,films,foams and particles. The microplastic abundances in the water and sediments were 1.8 ~ 31.2 N/L,31.2 ~ 1246.8 N/kg,respectively. The average particle sizes of microplastics in water and sediments were 0.51 0.20 mm and 1.54 1.02 mm,respectively. The results of spatial distribution of microplastics in Sanggou bay showed that the high abundance area mainly appears in the inshore waters,and the abundance of microplastics tends to decrease from the inner areas of estuary to the outshore areas. The heterogeneity of microplastic abundance and spatial distribution in Sanggou bay is mainly affected by human activities such as aquaculture,living and shipping,as well as hydrodynamics. In the future,fine sampling and analysis are needed to fully understand the temporal and spatial distribution of microplastics pollution in the bay areas.
Spatial variation of plant species richness in a sand dune field of northeastern Inner Mongolia, China
期刊论文
OAI收割
JOURNAL OF ARID LAND, 2016, 卷号: 8, 期号: 3, 页码: 434-442
作者:
Xing Baozhen
;
Wu Jing
;
Hou Xianzhang
;
Qian Jianqiang
;
Busso, Carlos A.
  |  
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2019/06/04
Biodiversity
Sampling Intensity
Semi-arid Dune
Spatial Analysis
Species Richness
Probabilistic modeling of rockfall trajectories: a review
SCI/SSCI论文
OAI收割
2015
作者:
Li L. P.
;
Lan, H. X.
收藏
  |  
浏览/下载:60/0
  |  
提交时间:2015/12/09
Rockfall trajectory
Probabilistic modeling
Uncertainty
Random
sampling
Rock shape
Rockfall intensity
new-south-wales
patch model
simulation
protection
design
runout
falls
susceptibility
australia
forests
A design of beam shaping unit for 193nm lithography illumination system using angular spectrum theory (EI CONFERENCE)
会议论文
OAI收割
6th International Symposium on Precision Engineering Measurements and Instrumentation, August 8, 2010 - August 11, 2010, Hangzhou, China
作者:
Zhao Y.
;
Zhang W.
;
Zhang W.
;
Li S.
;
Gong Y.
收藏
  |  
浏览/下载:17/0
  |  
提交时间:2013/03/25
Off-axis illumination (OAI) technology is widely used to enhance resolution for deep ultraviolet lithography. The realizing methods of OAI include geometrical optics method and physical optics method. However
the former has the disadvantage of weak intensity distribution controlling ability
and the latter introduces simulation errors evidently when dealing with near field diffraction propagation. A diffractive optical element (DOE) designing method using plane wave angular spectrum theory is presented in this paper. Several kinds of OAI modes at near field away from DOE can be realized
and simulation errors and the size of illuminator are also reduced. According to studying the relationships of the sampling point distance of DOE
light beam propagation distance
and the structure of the beam shaping unit
a method of determining the designing parameters is discussed. Using this method
several illumination modes are realized
and simulation results show that all diffraction efficiencies reach up to 84%. The method of DOE manufacturing is analyzed at last
and it is proven to be feasible. 2010 SPIE.