Results 81 to 90 of about 2,036 (280)
Advanced Science, EarlyView.Here, we demonstrate and investigate polarization‐enabled electromechanical responses in cryogenic physical vapor deposition (cryogenic PVD)‐deposited TexSe1‐x thin films, a tellurium‐based compound with a tunable bandgap and enhanced non‐centrosymmetry.
Chia‐Chen Chung +16 more
wiley +1 more source
Mission Planning for LEO Satellite IoT Constellation Based on Genetic Algorithm
天地一体化信息网络A mission planning algorithm based on genetic algorithm was designed for LEO satellite IoT constellation with no inter-satellite links, aimed to achieve real-time data communication through multiple ground stations while maximized the resource allocation
Yanhong LI +4 more
doaj +2 more sources
Scalable Cloud-Based LEO Satellite Constellation Simulator
, 2015 Distributed applications deployed on LEO satellites and ground stations require substantial communication between different members in a constellation to overcome the earth coverage barriers imposed by GEOs.
Karim Sobh +3 more
core +1 more source
Advanced Science, EarlyView.A hierarchically structured Fe‐BTC‐PMA immobilized 3D‐printed platform is engineered as a robust artificial enzyme for colorimetric glucose sensing. The hybrid architecture efficiently activates H2O2 to drive TMB oxidation. This integrated system enables sensitive, reusable, and scalable detection with enhanced catalytic stability and analytical ...
Paramita Koley +10 more
wiley +1 more source
Optimal design of the long-term LEO almanac by considering the atmosphere drag effects
Geo-spatial Information ScienceAlmanac is an elegant design to help Global Navigation Satellite Systems (GNSS) signal acquisition, which has been adopted by all global satellite navigation systems. For the future low Earth orbit (LEO) navigation constellation, the almanac will be more
Xueli Guo, Lei Wang, You Li
doaj +1 more source
Engineering of Crystal and Domain Structures in Epitaxial Y:HfO2 Thin Films by YSZ Substrate Miscut
Advanced Science, EarlyView.We investigate how YSZ substrate miscut influences crystal structure and domain formation in epitaxial Y‐doped HfO2 thin films. Using magnetron sputtering, high‐resolution X‐ray diffraction, atomic‐resolution scanning transmission electron microscopy, and first‐principles calculations, we systematically examine the characteristics of thickness‐ and ...
Jun Young Lee +12 more
wiley +1 more source
Advanced Science, EarlyView.Quasi‐2D perovskite‐organic segregated‐structure coupling enables low‐power narrowband photomultiplication photodetectors with 110 nm perovskite layer. The optimal device achieves 1200% EQE and 1.82 × 1011 Jones D* at 3 V, offering a new strategy for miniaturized high‐selectivity optoelectronic sensing.
Hongfei Qu +11 more
wiley +1 more source
Management of MEC Service and Optimization of Mission Migration in LEO Satellite Networks
天地一体化信息网络, 2022 Low earth orbit (LEO) satellites play an important role in the communication of earth observation and wide area coverage because of their advantages of short transmission delay and low deployment cost.Due to limited size and weight of LEO satellite ...
Zhihui LIU +5 more
doaj +2 more sources
A DTN routing scheme for quasi-deterministic networks with application to LEO satellites topology [PDF]
, 2012 We propose a novel DTN routing algorithm, called DQN, specifically designed for quasi-deterministic networks with an application to satellite constellations.
Dubois, Emmanuel +11 more
core +1 more source
The Interaction between the LEO Satellite Constellation and the Space Debris Environment
, 2021 The wide application of satellite constellations in the field of space-based global communications and remote sensing has led to a substantial increase in small-satellite launch plans, a sharp increase in the density of space objects in low-Earth orbit ...
Ronglan Wang +4 more
core +1 more source