Results 11 to 20 of about 286,619 (340)

Adaptive Control for an Aircraft Wing System with Hysteresis Nonlinearity

open access: yesMathematics, 2023
This paper involves a novel adaptive control approach of a flexible wing system with hysteresis nonlinearity. The usual control design strategies based on the ordinary differential equations (ODEs) are inapplicable due to the flexible wing system ...
Yi Qin   +4 more
doaj   +1 more source

Application research on 5G technology in fatigue test of full-scale aircraft

open access: yesHangkong gongcheng jinzhan, 2023
With the development of aircraft demand, and emerging of new material and new process, the test and validation technology of aircraft structure strength will also face new challenges.
LIU Bing, ZHANG Jianfeng, MU Bin
doaj   +1 more source

Using Polarization-Diverse Wave-Coefficients for Aerospace Target Recognition

open access: yesIEEE Access, 2020
Wave-coefficients (WCs) based target recognition can be theoretically applied to any a frequency range, with increased sensitivity to aspect angle at higher frequencies.
Xiaomin Jiang   +3 more
doaj   +1 more source

Adaptive Visually Servoed Tracking Control for Wheeled Mobile Robot with Uncertain Model Parameters in Complex Environment

open access: yesComplexity, 2020
This paper investigates the stabilization and trajectory tracking problem of wheeled mobile robot with a ceiling-mounted camera in complex environment.
Fujie Wang   +4 more
doaj   +1 more source

The impact of digitalization and intelligentization on air transportation system

open access: yesAviation, 2021
This study aims to provide insights into the impact levels of digitalization and intelligentization on air transport system (ATS) in Australia, China, the US, and India.
Jiezhuoma La, Iryna Heiets
doaj   +1 more source

Synthesis of GaN Crystals by Nitrogen Pressure-Controlled Recrystallization Technique in Na Alloy Melt

open access: yesCrystals, 2021
GaN crystals are synthesized by recrystallization technique in Na-Li-Ca alloy melt under different N2 pressure. X-ray powder diffraction results confirm that the structure of crystals is GaN with wurtzite type and there still have raw powders remaining ...
Xi Wu   +7 more
doaj   +1 more source

A New Gain-Phase Error Pre-Calibration Method for Uniform Linear Arrays

open access: yesSensors, 2023
In this paper, we consider the gain-phase error calibration problem for uniform linear arrays (ULAs). Based on the adaptive antenna nulling technique, a new gain-phase error pre-calibration method is proposed, requiring only one calibration source with ...
Chang Liu, Xiao Tang, Zhi Zhang
doaj   +1 more source

The Impact of Blockchain Technology and The Internet of Things on the Agile and Sustainable Supply Chain [PDF]

open access: yes, 2022
In addition to being a revolutionary technology for all industries, the Internet of Things; has also shown its potential in processes such as supply chain.
Ghahremani Nahr, Javid, Nozari, Hamed
core   +2 more sources

Relay Selection for Dual-Hop Cooperative Ambient Backscatter Communication Systems

open access: yesSensors, 2023
Previous works only focus on the optimization design for the dual-hop cooperative ambient backscatter communication (AmBC) system with single-relay selection. The impact of relay selection on the outage performance of dual-hop cooperative AmBC systems is
Ping Yang, Weichao Kuang, Shanjin Wang
doaj   +1 more source

Corner-Point and Foreground-Area IoU Loss: Better Localization of Small Objects in Bounding Box Regression

open access: yesSensors, 2023
Bounding box regression is a crucial step in object detection, directly affecting the localization performance of the detected objects. Especially in small object detection, an excellent bounding box regression loss can significantly alleviate the ...
Delong Cai, Zhaoyun Zhang, Zhi Zhang
doaj   +1 more source

Home - About - Disclaimer - Privacy