中国科学院机构知识库网格系统: 检索

Spatial attention based visual semantic learning for action recognition in still images 期刊论文 OAI收割
NEUROCOMPUTING, 2020, 卷号: 413, 页码: 383-396
作者: Zheng, Yunpeng; Zheng, Xiangtao; Lu, Xiaoqiang; Wu, Siyuan

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收藏 | 浏览/下载：34/0 | 提交时间：2020/11/09

Still image-based action recognition Spatial attention Semantic parts Deep learning

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

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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.

Constant cyclotron line energy in Hercules X-1 - Joint Insight-HXMT and NuSTAR observations 期刊论文 OAI收割
Journal of High Energy Astrophysics, 2019, 卷号: 23, 页码: 29-32
作者: HXMT

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收藏 | 浏览/下载：50/0 | 提交时间：2022/02/08

Stars: neutron star Pulsars: binary(Her X-1) X-rays: stars Astrophysics - High Energy Astrophysical Phenomena Abstract: The long-term evolution of the centroid energy of the CRSF in Her X-1 is still a mystery. We report a new measurement from a campaign between Insight-HXMT and NuSTAR performed in February 2018. Generally, the two satellites show well consistent results of timing and spectral properties. The joint spectral analysis confirms that the previously observed long decay phase has ended, and that the line energy instead keeps constant around 37.5 keV after flux correction.

Entanglement Loss for Context-Based Still Image Action Recognition 会议论文 OAI收割
Shanghai, China, July 8, 2019 - July 12, 2019
作者: Xin M(辛淼); Shuhang Wang; Jian Cheng

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收藏 | 浏览/下载：4/0 | 提交时间：2023/04/25

Still image action recognition attribute entanglement feature learning loss function

A Benchmark and Comparative Study of Video-Based Face Recognition on COX Face Database 期刊论文 OAI收割
IEEE TRANSACTIONS ON IMAGE PROCESSING, 2015, 卷号: 24, 期号: 12, 页码: 15
作者: Huang, Zhiwu; Shan, Shiguang; Wang, Ruiping; Zhang, Haihong; Lao, Shihong

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收藏 | 浏览/下载：22/0 | 提交时间：2019/12/13

Video-based face recognition video-to-still still-to-video video-to-video COX Face DB benchmarking point-to-set correlation learning

Point-Manifold Discriminant Analysis for Still-to-Video Face Recognition 期刊论文 OAI收割
IEICE TRANSACTIONS ON INFORMATION AND SYSTEMS, 2014, 卷号: E97D, 期号: 10, 页码: 2780-2789
作者: Chen, Xue; Wang, Chunheng; Xiao, Baihua; Shao, Yunxue

收藏 | 浏览/下载：32/0 | 提交时间：2015/08/12

face recognition still-to-video discriminant analysis point-manifold distance scenario-oriented

电视节目结构化分析与摘要技术研究 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: 徐夙

收藏 | 浏览/下载：27/0 | 提交时间：2015/09/02

逻辑单元分割条件随机场模型图片摘要图片摘要可视化 Logical Unit Segmentation Conditional Random field Still-image Abstract Still-image Visualization

石松生物碱(-)-Huperzine W和(+)-Lycopladine A的不对称全合成 学位论文 OAI收割
硕士: 中国科学院研究生院, 2012
徐弢

收藏 | 浏览/下载：44/0 | 提交时间：2015/03/23

全合成 Huperzine W Lycopladine A Helquist环化 Still偶联 Krhnke吡啶合成

Design of semi-physical simulation for small satellite by virtual display (EI CONFERENCE) 会议论文 OAI收割
2011 3rd International Conference on Mechanical and Electronics Engineering, ICMEE 2011, September 23, 2011 - September 25, 2011, Hefei, China
Xu K.; Lv Y.; Jin G.

收藏 | 浏览/下载：20/0 | 提交时间：2013/03/25

Semi-physical simulation of attitude control system is the more synthetically test and verify for designing of small satellite control system. It is an important means of small satellite development. However the results of current semi-physical simulation system have a lot of non-intuitive. Compare with the actual environment the simulation environment still has striking disparity. So the shortcomings affect precision of simulation. Based on the virtual display technology the group semi-physical simulation system has been constructed for attitude control of small satellite due to the combination with xPC real-time environment the simulation computer high-precision single-axis air-bearing turntable reaction wheel air thrust device fiber gyroscopes sensors synchronizer power subsystem and wireless devices virtual display computer etc. Semi-physical simulation achieved the visual simulation in orbit and tracked new information of virtual environment of space into real-time simulation computer. Simulation results show that the simulation system for real-time attitude and orbit position of small satellite semi-physical simulation has an excellent display effect. At the same time Real-time transfuse of orbit information provides a more accurate space environment simulation. The simulation system of small satellite attitude control to design and evaluate the more direct and convenient. (2012) Trans Tech Publications Switzerland.

PID control of glucose concentration in subjects with type 1 diabetes based on a simplified model: An in silico trial (EI CONFERENCE) 会议论文 OAI收割
10th World Congress on Intelligent Control and Automation, WCICA 2012, July 6, 2012 - July 8, 2012, Beijing, China
作者: Yu L.

收藏 | 浏览/下载：29/0 | 提交时间：2013/03/25

An artificial pancreas system (APS) mimics the function of a real pancreas through monitoring a diabetic's blood glucose and administering the right dose of insulin via an automatic control loop. It is hailed as a promising cure of diabetes though this technology is still years away from commercial use due to a few technological bottlenecks. The simulation model of insulin-glucose metabolism of type 1 diabetes mellitus (T1DM) is an essential part of APS. In order to simplify the parameter identification task so that the model can be implemented electronically with ease this paper presents a simplified model based on Routh approximation model reduction method. The results show that the approximation error between the simplified model and the original model is so small that can be neglected. Based on the simplified model a PID controller is designed to maintain normoglycemia (90mg/dl) in subjects with T1DM. The in silico simulation results show that the glucose concentration is controlled well the risk of hyperglycemia and hypoglycemia is reduced a lot. This suggests that the simplified model describes the insulin-glucose metabolism process accurately and the PID control algorithm is well-suitable to guide the further development of an APS. 2012 IEEE.