Results 1 to 10 of about 899,857 (269)

A Two-Level Iterative Node Importance Evaluation of Aircraft Function Modules Based on Influence Matrix

open access: yesInternational Journal of Aerospace Engineering, 2023
Accurate evaluation of the critical nodes in the system is essential work for a multiplatform avionics system (MPAS) for resource allocation and other works.
Chang Liu, Jinyan Wang, Kangxing Wang
doaj   +1 more source

The Design of DGPS/INS Integration for Implementation of 4S-Van [PDF]

open access: yesJournal of Astronomy and Space Sciences, 2002
In this study, we developed low cost INS and (D)GPS integration for continuous attitude and position and utilized it for the determination of exterior orientation parameters of image sensors which are equipped in 4S-Van. During initial alignment process,
Seong-Baek Kim   +3 more
doaj   +1 more source

Texture and anisotropy of hot-pressed h-BN matrix composite ceramics with in situ formed YAG

open access: yesJournal of Advanced Ceramics, 2022
Textured hexagonal boron nitride (h-BN) matrix composite ceramics were prepared by hot-pressing using different contents of 3Y2O3−5Al2O3 (molar ratio of 3:5) as the sintering additive.
Zhuo Zhang   +10 more
doaj   +1 more source

Deep Integration, Global Firms, and Technology Spillovers [PDF]

open access: yes, 2022
This open access book explores the impact of deep regional economic integration on spillovers of knowledge and technology across countries. Deep integration through signing deep regional trade agreements (DRTAs), which cover various policy areas in ...
Jinji, Naoto   +2 more
core   +1 more source

Author Correction: Integrated nano-optomechanical displacement sensor with ultrawide optical bandwidth

open access: yesNature Communications, 2020
An amendment to this paper has been published and can be accessed via a link at the top of the paper.
Tianran Liu   +5 more
doaj   +1 more source

Integrated nano-optomechanical displacement sensor with ultrawide optical bandwidth

open access: yesNature Communications, 2020
On-chip mechanical sensing platforms require tuneable lasers with narrow linewidth and low spectral noise, making read-out challenging. Here, the authors report a nanomechanical sensor with 80nm bandwidth, displacement imprecision of 45 fm/Hz1/2 as well ...
Tianran Liu   +5 more
doaj   +1 more source

Multi frequency multi bit amplitude modulation of spoof surface plasmon polaritons by schottky diode bridged interdigital SRRs

open access: yesScientific Reports, 2021
Multi-frequency multi-bit programmable amplitude modulation (AM) of spoof surface plasmon polaritons (SPPs) is realized at millimeter wave frequencies with interdigital split-ring resonators (SRRs) and In-Ga-Zn-O (IGZO) Schottky diodes.
Haotian Ling   +7 more
doaj   +1 more source

Real-time high-bandwidth mm-wave 5G NR signal transmission with analog radio-over-fiber fronthaul over multi-core fiber

open access: yesEURASIP Journal on Wireless Communications and Networking, 2021
This article presents an experimental demonstration of a high-capacity millimeter-wave 5G NR signal transmission with analog radio-over-fiber (ARoF) fronthaul over multi-core fiber and full real-time processing.
Simon Rommel   +15 more
doaj   +1 more source

Active and Programmable Metasurfaces with Semiconductor Materials and Devices

open access: yesCrystals, 2023
Active metasurfaces provide promising tunabilities to artificial meta−atoms with unnatural optical properties and have found important applications in dynamic cloaking, reconfigurable intelligent surfaces, etc.
Can Cui   +7 more
doaj   +1 more source

Rapid improvement of technology integration in context-aware learning spaces [PDF]

open access: yes, 2011
Context-aware learning spaces (CALSs) utilise resources of the surrounding context in the learning process. UFractions is a CALS combining a storytelling game on a mobile phone and fraction rods for learning mathematics at middle schools.
Erkki Sutinen   +7 more
core   +1 more source

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