Results 101 to 110 of about 279,049 (350)

Slant total electron content for Sirio-Mortelliccio ray path

Annals of Geophysics, 2006
The Total Electron Content (TEC) is used to indicate the ionisation of the ionosphere. TEC is a quantity that concern for predicting space weather effects on telecommunications, improving the accuracy of satellite navigation, fly control vehicles and ...
P. Spalla, R. G. Ezquer, M. A. Cabrera
doaj   +1 more source

Time-reversal and the adjoint method with an application in telecommunication [PDF]

arXiv, 2004
We establish a direct link between the time-reversal technique and the so-called adjoint method for imaging. Using this relationship, we derive new solution strategies for an inverse problem which arises in telecommunication. These strategies are all based on iterative time-reversal experiments, which try to solve the inverse problem experimentally ...
arxiv  

A MEMS Electromagnetic Vibration Energy Harvester with Monolithically Integrated NdFeB Micromagnets

Advanced Materials Technologies, EarlyView.
50µm thick sputtered arrays of NdFeB micromagnets are directly integrated into a functional MEMS in‐plane electromagnetic vibration energy harvester. A combination of analytical modeling and numerical simulations guided the design of the magnet arrays and ad‐hoc coil, to produce a high transduction factor.
Ilona Lecerf, José Elìas Angulo‐Cervera, Frederico Orlandini‐Keller, Pierre Moritz, Fabrice Mathieu, David Bourrier, Samuel Charlot, Liviu Nicu, Thierry Leïchlé, Thibaut Devillers, Richard Haettel, Nora M. Dempsey, Thomas Blon, Lise‐Marie Lacroix   +13 more
wiley   +1 more source

EarthScope [PDF]

, 2002
EarthScope applies modern observational, analytical, and telecommunications technologies to investigate the structure and evolution of the North American continent and the physical processes controlling earthquakes and volcanic eruptions.
Michelle Hall-Wallace
core   +1 more source

Comparative Test of Novel Fluorescent Optical Antennas for LED‐ and Laser‐Based Optical Wireless Communications

Advanced Optical Materials, EarlyView.
New fluorescent optical antennas are realized and tested for diverse Optical Wireless Communication (OWC) applications. The fluorescent concentrator slabs, based on different organic fluorophores, convert and convey the digital data conveyed through intensity modulation of incoming light toward a small‐area photodiode.
Marco Meucci, Mauro Aresti, Giulio Cossu, Lorenzo Gilli, Luca Oliviero, Matteo Bartolini, Andrea Pucci, Ernesto Ciaramella, Jacopo Catani   +8 more
wiley   +1 more source

Evaluation of Different Power Saving Techniques for MBMS Services

EURASIP Journal on Wireless Communications and Networking, 2009
Over the last years we have witnessed an explosive growth of multimedia computing, wireless communication and applications. Following the rapid increase in penetration rate of broadband services, the Third Generation Partnership Project (3GPP) is ...
Alexiou Antonios, Bouras Christos, Kokkinos Vasileios   +2 more
doaj   +2 more sources

Uncertainty Modeling and Stability Assessment of Minimum Spanning Trees in Network Design

Mathematics
The Minimum Spanning Tree (MST) problem in networks focuses on finding efficient routes, with applications in transportation, logistics, telecommunications, and more. However, catastrophes can make these networks uncertain, requiring robust computational
Ahmad Hosseini
doaj   +1 more source

Building Scalable Silicon Microring Resonator‐Based Neuromorphic Photonic Circuits Using Post‐Fabrication Processing with Photochromic Material

Advanced Optical Materials, EarlyView.
One of the high‐impact research goals in neuromorphic photonics is to build scalable photonic artificial intelligence computing at high energy efficiency. This perspective paper discusses microring resonator (MRR)‐based large‐scale photonic neural networks, variations of MRR resonance wavelength from fabrication, and post‐fabrication processing with ...
Lei Xu, Jiawei Zhang, Eli A. Doris, Simon Bilodeau, Jesse A. Wisch, Manting Gui, Yusuf O. Jimoh, Bhavin Shastri, Barry P. Rand, Paul R. Prucnal   +9 more
wiley   +1 more source

Link budget analysis of bi-directional LEO and GEO optical feeder links advancing the beam wander model’s accuracy

Scientific Reports
The telecommunications of the future rely on the concept of a three-dimensional architecture able to integrate terrestrial and non-terrestrial networks with the goal to ensure a reliable and high-speed connectivity to users located anywhere.
Carla Cantore, Davide Monopoli, Angelo Altamura, Alberto Mengali, Marco Grande, Antonella D’Orazio   +5 more
doaj   +1 more source

Plasmonic and Photonic Modes in Colloidal CuS Nanocrystals

Advanced Optical Materials, EarlyView.
Copper sulfide in the covellite phase (CuS) can exhibit exceptional optoelectronic properties with plasmonic and photonic absorption in its monolithic nanomaterial form. In this work, the phenomenon of near‐infrared (NIR) to visible electromagnetic field localization in ultrathin crystalline quasi‐2D CuS nanocrystals is demonstrated by mapping ...
Kenan Elibol, Fatemeh Davoodi, Urvi Parekh, Masoud Taleb, Stefan Scheel, Marko Burghard, Peter A. van Aken, Christian Klinke, Nahid Talebi, Rostyslav Lesyuk   +9 more
wiley   +1 more source