Results 31 to 40 of about 19,221,438 (289)

High-Precision Collaborative Relative Navigation Method for Multiple Aircraft Based on Geometric Topology Constraints [PDF]

open access: yesHangkong bingqi
Multiple aircraft formation has strong multi operation capability, high reliability and high overall efficiency, which is an important direction for the future development of aviation field.
Lu Kewen, Wang Xinlong, Wang Bin
doaj   +1 more source

Real-Time Precise DGNSS/INS Integrated Relative Positioning with High Output Rate and Low Broadcast Rate for Kinematic-to-Kinematic Applications

open access: yesRemote Sensing, 2022
High-output-rate relative positions are required for high-speed safety-critical kinematic-to-kinematic applications such as pre-crash sensing and shipboard landing.
Qingsong Li   +4 more
doaj   +1 more source

Computed Tomography Reconstruction Algorithm Based on Relative Total Variation Minimization

open access: yesCT Lilun yu yingyong yanjiu, 2023
The total variation (TV) minimization algorithm is an effective CT image reconstruction algorithm that can reconstruct sparse or noisy projection data with high accuracy. However, in some cases, the TV algorithm produces stepped artifacts.
Jiahao ZHANG, Zhiwei QIAO
doaj   +1 more source

Evaluation Model of College Students’ Entrepreneurship Success Rate Based on Grey Relational Theory [PDF]

open access: yesE3S Web of Conferences, 2021
In order to improve the success rate of entrepreneurship of college students, it is necessary to establish a success rate evaluation model to analyze the success rate of entrepreneurship and make the optimal discrimination.
Yan Xiaonan, Tian Jian
doaj   +1 more source

Measuring Trace Gas Emission from Multi-Distributed Sources Using Vertical Radial Plume Mapping (VRPM) and Backward Lagrangian Stochastic (bLS) Techniques

open access: yesAtmosphere, 2011
Two micrometeorological techniques for measuring trace gas emission rates from distributed area sources were evaluated using a variety of synthetic area sources.
Thomas K. Flesch   +3 more
doaj   +1 more source

MCI Detection Using Kernel Eigen-Relative-Power Features of EEG Signals

open access: yesActuators, 2021
Classification between individuals with mild cognitive impairment (MCI) and healthy controls (HC) based on electroencephalography (EEG) has been considered a challenging task to be addressed for the purpose of its early detection.
Yu-Tsung Hsiao   +5 more
doaj   +1 more source

High-Accuracy Measurement of Aperture Area Relative to A Standard Known Aperture

open access: yesJournal of Research of the National Institute of Standards and Technology, 1995
Precise knowledge of the area of apertures used in high precision radiometry is extremely important. A method is presented here for the determination of the area of round and irregularly shaped apertures by comparison to a standard aperture which has been measured by other means to high accuracy.
Fowler, Joel B., Dezsi, Gyula
openaire   +2 more sources

PRDL: Relative Localization Method of RFID Tags via Phase and RSSI Based on Deep Learning

open access: yesIEEE Access, 2019
Ultra-high frequency radio frequency identification (UHF RFID) technology has been widely used in many areas, and RFID localization becomes a research hotspot.
Leixian Shen   +4 more
doaj   +1 more source

Incorporating Auxiliary Data of Different Spatial Scales for Spatial Prediction of Soil Nitrogen Using Robust Residual Cokriging (RRCoK)

open access: yesAgronomy, 2021
Auxiliary data has usually been incorporated into geostatistics for high-accuracy spatial prediction. Due to the different spatial scales, category and point auxiliary data have rarely been incorporated into prediction models together.
Mingkai Qu   +4 more
doaj   +1 more source

Systematic reviews of diagnostic test accuracy

open access: yes, 2008
More and more systematic reviews of diagnostic test accuracy studies are being published, but they can be methodologically challenging. In this paper, the authors present some of the recent developments in the methodology for conducting systematic ...
JJ Deeks   +6 more
core   +1 more source

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