中国开放科研知识云: 检索

Real-time detection of BDS orbit manoeuvres based on the combination of GPS and BDS observations 期刊论文
IET RADAR SONAR AND NAVIGATION, 2020, 卷号: 14, 期号: 10, 页码: 1603-1609
作者: Tu, Rui; Zhang, Rui; Liu, Zhanke; Fan, Lihong; Han, Junqiang

收藏 | 浏览/下载：38/0 | 提交时间：2021/11/29

Global Positioning System artificial satellites object detection BDS orbit manoeuvre detection method Global Positioning System single BDS system orbital manoeuvre observation time real-time detection Chinese BeiDou navigation satellite system timing services BDS satellites continuous PNT services reliable PNT services geostationary orbit global positioning navigation and timing services inclined geosynchronous medium earth orbit MEO combined GPS-BDS system receiver clock error bias time 157 0 min

Permissible area analyses of measurement errors with required fault diagnosability performance 期刊论文
Sensors (Switzerland), 2019, 卷号: 19, 期号: 22
作者: Jiang, Dong-Nian; Li, Wei

收藏 | 浏览/下载：15/0 | 提交时间：2020/11/14

Measurement errors Monte Carlo methods Normal distribution Adverse effect Analysis of measurements Fault diagnosability Kullback Leibler divergence Quantitative evaluation Reliable detection Sparse kernels

Reliable Communication Mechanism Design for Interaction between Android and ROS 会议论文
8th Annual IEEE International Conference on Cyber Technology in Automation, Control and Intelligent Systems, CYBER 2018, 2018-07-19
作者: Shao, Z.; Li, M.; Qu, Y.; Song, G.; Guan, Y.

收藏 | 浏览/下载：9/0 | 提交时间：2019/12/30

Anomaly detection Intelligent systems Machine design Application layers Application prospect Communication mechanisms Current mechanisms Interactive control Reliable communication Robot operating system TCP/IP protocol Android (operating system)

食用蔬菜能吸收和积累微塑料 期刊论文
科学通报, 2019, 卷号: 64, 期号: 9, 页码: 928-934
作者: 李连祯; 周倩; 尹娜; 涂晨; 骆永明

收藏 | 浏览/下载：63/0 | 提交时间：2020/06/17

微塑料生菜聚苯乙烯微球吸收积累健康风险 microplastics lettuce polystyrene microbeads uptake accumulation human health risk Microplastic (MP, 100 nm-5 mm) may present an attributable risk to ecosystem and human health, and its pollution has become a global environmental concern. Despite a wealth of information on the accumulation of MPs in aquatic species, there is no information on the uptake and accumulation of MPs by higher plants. Terrestrial edible plants are directly exposed to MPs when agricultural soil was applied with organic manure, sewage sludge as fertilizer or plastic mulching. In this paper, the uptake of two sizes of polystyrene (PS) microbeads (0.2 and 1.0 mum) and then their distribution and migration in an edible plant lettuce were firstly investigated based on laboratory experiments. We used fluorescent markers to track PS microbeads in plant tissues and found fluorescence to be a sensitive and reliable detection method. Sections from untreated control lettuce showed no autofluorescence. When roots were treated with fluorescently labeled PS microbeads, the microbeads could be identified by its fluorescence. Our main study investigated the uptake of 0.2 mum beads, as few luminescence signals were observed in lettuce roots for 1.0 mum beads in our experiment. We observed that 0.2 mum fluorescent microbeads were extracellularly trapped in the root cap mucilage (which is a highly hydrated polysaccharide) and a dark green tip (which was typical of lettuce roots exposed to label PS beads) was usually visible to the naked eye. Confocal images revealed that the PS luminescence signals were mainly located in the vascular system and on the cell walls of the cortex tissue of the roots, indicated that the beads passed through the intercellular space via the apoplastic transport system. Once inside the central cylinder, the 0.2 mum PS beads were transferred from the roots to the stems and leaves via the vascular system following the transpiration stream. We also observed that the PS beads adhered to one another and self-assembled systematically into grape-like and (chain) string-like clusters in the intercellular space of the root and stem vascular tissue of lettuce plant. In contrast to the root and stem, PS beads were dispersed in the leaf tissue. Here, for the first time we provide evidence of the adherence, uptake, accumulation, and translocation of submicrometer MPs within an edible plant. Our findings highlight the previously underappreciated human exposure pathway to MPs through the consumption of contaminated crops and emphasize the need for new management strategies to control the release of MPs waste products into the terrestrial environment. Ultimately, the potential impacts of low range sized MPs on food safety of crop plants and human health need to be urgently considered.

A synthetic method for photovoltaic series arc fault detection with different loads and its identification 会议论文
作者: Chen, Silei; Li, Xingwen; Xiong, Jiayu; Wang, Qian

收藏 | 浏览/下载：3/0 | 提交时间：2019/11/26

Detection methods Experimental platform Photovoltaic generation Reliable methods Series arc-fault Short time fourier transformations Synthetic methods Transient process

Roundtable:Research Opportunities and Challenges for Large-Scale Software Systems 期刊论文
计算机科学技术学报（英文版）, 2016
Xusheng Xiao; Jian-Guang Lou; Shan Lu; David C Shepherd; Xin Peng; Qian-Xiang Wang

收藏 | 浏览/下载：3/0 | 提交时间：2017/12/04

organization-wide software behavior log analysis reliable cloud distributed system usage data clone detection and management code search organization-wide software behavior log analysis reliable cloud distributed system usage data clone detection and management code search

Fault diagnosis algorithm of chemical industry process based on variable window adaptive KPCA 期刊论文
Dongnan Daxue Xuebao (Ziran Kexue Ban)/Journal of Southeast University (Natural Science Edition), 2013, 卷号: 43, 期号: SUPPL.I, 页码: 93-97
作者: Zhao, Xiaoqiang; Yang, Wu; Xue, Yongfei

收藏 | 浏览/下载：14/0 | 提交时间：2020/11/14

Benzene Chemical industry Dewaxing Errors Failure analysis Fault detection Ketones Principal component analysis Diagnosis algorithms False alarm rate Industry process Kernel principal component analyses (KPCA) Ketone Benzol dewaxing process Large amounts of data Reliable performance Variable windows

Design and implementation of voice broadcasting system for airport 期刊论文
2010, 2010
Chne Han; Cat Lian-Hong; Zhong Yu-Zhuo

收藏 | 浏览/下载：1/0

Arc fault signatures detection on aircraft wiring system (EI CONFERENCE) 会议论文
6th World Congress on Intelligent Control and Automation, WCICA 2006, June 21, 2006 - June 23, 2006, Dalian, China
Hongkun Z.; Tao C.; Wenjun L.

收藏 | 浏览/下载：18/0 | 提交时间：2013/03/25

In this paper an arc fault detection method Is proposed based on characteristics of the fault current of an electric arc. A localized signal processing method Is developed using wavelet analysis to decompose the differential current signal Into a series of wavelet components each of which Is a time-domain signal that covers a specific frequency band. Thus more distinctive signal features that represent arc faults and other fault transient phenomena are extracted. As a result by quantifying the extracted features an arc faults are distinguished from phenomena similar to arc and other fault transients using the differences In the quantified features. Simulation studies have demonstrated that the proposed method Is reliable and simple. 2006 IEEE.

PSO based gabor wavelet feature extraction method (EI CONFERENCE) 会议论文
2004 International Conference on Information Acquisition, ICIA 2004, June 21, 2004 - June 25, 2004, Hefei, China
Sun H.; Pan Y.; Zhang Y.

收藏 | 浏览/下载：13/0 | 提交时间：2013/03/25

In this paper the time of feature extraction is faster. By test in low contrast image 2D continues Gabor wavelets are adopted to realize feature extraction. By optimize Gabor wavelet's parameters of translation the feasibility and effectiveness of the algorithm are demonstrated by VC++ simulation platform in experiments. 2004 IEEE. orientation and scale to make it approximates a local image contour region. The method of Sobel edge detection is used to get the initial position and orientation value of optimization in order to improve the convergence speed. In the wavelet characteristic space we adopt PSO (particle swarm optimization) Algorithm to identify points on the security border of the system. Comparing to the LM algorithm it can ensure reliable convergence the target which can improve convergent speed

在结果中检索

相关链接

CORC

联系我们