Results 91 to 100 of about 6,561 (302)

Integrated Field‐Free SOT Domain‐Wall Synapses and MTJ Stochastic Neurons for Hardware Boltzmann Machines

Advanced Functional Materials, EarlyView.
Field‐free spin‐orbit torque domain‐wall synapses integrated with stochastic MTJ neurons enable compact hardware Boltzmann machines. Leveraging intrinsic stochasticity and multi‐level conductance, the system achieves efficient probabilistic learning with high accuracy, demonstrating a scalable spintronic platform for energy‐efficient edge AI.
Aijaz H. Lone, Meng Tang, Camelia Florica, Bin He, Jingkai Xu, Selma Amara, Georgian Melinte, Xixiang Zhang, Gianluca Setti   +8 more
wiley   +1 more source

Autonomous control of a reconfigurable constellation of satellites on geostationary orbit with artificial potential fields

, 2012
This paper presents a method of controlling a constellation of small satellites in Geostationary Earth Orbit (GEO) such that the constellation is able to reconfigure - changing the angular position of its members relative to the Earth’s surface in order ...
Colombo, Camilla, McInnes, Colin, Mushet, Garrie   +2 more
core  

Reliability Analysis of Low Earth Orbit Broadband Satellite Communication Constellations

, 2020
Large space-based communication networks have been growing in numbers of satellites, with plans to launch more than 10,000 satellites into Low Earth Orbit (LEO).
Nazmy, Islam Aly Sadek
core  

Semi-Empirical Astronomical Light Pollution Evaluation of Satellite Constellations. [PDF]

J Astronaut Sci, 2022
Hall DT.
europepmc   +1 more source

Robustness of satellite constellation networks

Computer Communications, 2022
Xin Xu, Zhixiang Gao, Aijun Liu 0001
openaire   +1 more source

Exciton Binding Energy of Phosphorescent Emitter Molecules in Organic Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
Energy level alignment is key to efficient OLED design, yet determining LUMO energies remains challenging. A methodology based on field‐induced dissociation and kinetic Monte Carlo simulations is presented to extract LUMO energies of iridium‐based phosphorescent emitters from their exciton binding energy.
Hiroki Tomita, Lucas R. L. Norg, Patrick Diederen, Clint van Hoesel, Christ H. L. Weijtens, Peter A. Bobbert, Reinder Coehoorn   +6 more
wiley   +1 more source

TCP VIA SATELLITE CONSTELLATIONS

, 2008
Many Transmission Control Protocol (TCP) versions have been proposed for terrestrial wired networks over the Internet Protocol (IP), e.g. Tahoe and Reno.
R. Kapoor, F. Vatalaro, M. Gerla, M. A. Vazquez-castro, M. Luglio, J. Stepanek   +5 more
core  

Satellite constellations: International legal and technical aspects

Over the past few years, the process of deploying mega-constellations of satellites by private companies has attracted increasing attention. The most famous satellite constellations include the American Starlink and the British One Web.
Mednikova M., Abashidze A., Chernykh I.
core   +1 more source

Ultrasensitive Anti‐Stokes Luminescence Thermometry in Transition Metal Dichalcogenide Monolayers

Advanced Functional Materials, EarlyView.
We demonstrate a highly sensitive nanothermometer using anti‐Stokes photoluminescence, also known as photoluminescence upconversion (UPL), in monolayer tungsten disulfide. A strong resonantly enhanced UPL is observed, confirming the central role of optical phonons in the PL upconversion mechanism.
Sharada Nagarkar, Fahrettin Sarcan, Elanur Hut, Emiliano R. Martins, Stuart A. Cavill, Thomas F. Krauss, Yue Wang   +6 more
wiley   +1 more source

Small Satellite Constellations for EHF Polar Coverage

, 1990
Because atmospheric attenuation is greater for EHF frequencies than lower frequencies, it is necessary to design EHF satellite constellations so that the minimum elevation angles of the ground station antennas are larger than for satellite communication ...
Acker, William
core   +1 more source