Results 41 to 50 of about 869,960 (293)

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

Analysis of LEO satellite communication and suggestions for its development strategy in China

open access: yesDianxin kexue, 2020
The review on the development in 5G and LEO satellite communications was given on multi aspects.The role of LEO satellite communication in 5G was positioned as a complement,not yet as the main role.The proposals were thus given based on the analysis of ...
Shanzhi CHEN
doaj   +2 more sources

Modulation and Signal Processing for LEO-LEO Optical Inter-Satellite Links

open access: yesIEEE Access, 2023
Nous étudions les aspects clés des communications optiques cohérentes sur les liaisons inter-satellites (ISL) pour les constellations ultra-denses de prochaine génération en orbite terrestre basse (LEO). Dans un premier temps, la pertinence des formats de modulation QPSK, 8-QAM et 16-QAM avec différents débits de symboles (28 GBaud, 60 GBaud et 120 ...
Igor P. Vieira   +2 more
openaire   +3 more sources

Population Based Routing in LEO Satellite Networks [PDF]

open access: yes, 2022
Packet switching in a Low Earth Orbit (LEO) satellite network may calculate the best traffic route through the less populated areas of the planet, in order to avoid relaying through the busiest satellites. A number of ideas for route calculation in a LEO
Landmark, Lars, Fongen, Anders
core  

Electrically Induced Phase Transition and Synaptic Functionality in MoTe2/Graphene Memristors

open access: yesAdvanced Functional Materials, EarlyView.
An electrically induced reversible 2H ↔ 1T′ phase transition is demonstrated in a vertical Au/Ti/MoTe2/graphene memristor with a laterally contacted graphene electrode. Resistive switching proceeds through a compositionally invariant amorphous/2H ↔ amorphous/1T′ transformation, in which a self‐formed amorphous MoTe2 interfacial region is proposed to ...
Chien‐Hua Wang   +7 more
wiley   +1 more source

User group based multi-satellite handover strategy for LEO satellite networks

open access: yesDianxin kexue, 2022
LEO satellite network plays an important role in global communication in the future mobile communication.In large-scale LEO satellite networks, frequent concurrent handoffs by a large number of users will reduce the handover success rate and increase the
Hongtao ZHU, Qing GUO
doaj   +2 more sources

A wised routing protocols for LEO satellite networks [PDF]

open access: yes2015 10th Asian Control Conference (ASCC), 2015
The 10th Asian Control Conference (ASCC), Universiti Teknologi Malaysia ...
Saeid Aghaei Nezhad Firouzja   +3 more
openaire   +4 more sources

Orbit Precision Analysis of Small Man-Made Space Objects in LEO Based on Radar Tracking Measurements [PDF]

open access: yes, 2012
The German Space Operations Center (GSOC) performs collision avoidance for 11 LEO and 2 GEO satellites. Risk detection and maneuver decisions strongly depend on the computed probability of collision that is driven by the anticipated orbit precision of ...
Letsch, Klemens   +6 more
core  

LEO Satellite-assisted Task Offloading for a Near Real-time Earth Observation Service [PDF]

open access: yes
peer reviewedThe next-generation regenerative payload-enabled low Earth orbit (LEO) satellites enable task offloading and delivering services to energy and computation-constrained devices in remote terrains.
VU, Thang Xuan   +2 more
core   +1 more source

Fiber‐Based Wearable Electronics as Adaptive Biointerfaces for Healthcare Applications

open access: yesAdvanced Functional Materials, EarlyView.
Fiber‐based wearable electronics have been extensively studied as adaptive healthcare biointerfaces. In this review, we classify and introduce fiber‐based systems according to biointerface design, conductive materials, transduction mechanisms, and healthcare applications, and provide a perspective on their translation toward reliable, continuous ...
Sangwoo Hong   +5 more
wiley   +1 more source

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