Results 41 to 50 of about 2,026 (247)

Generation of Probabilistic Bits by Exploiting Orthogonal Spin Currents in Magnetic Trilayers

Advanced Science, EarlyView.
Fe/Ti/CoFeB trilayers generate orthogonal spin currents that drive stochastic spin–orbit‐torque switching for probabilistic‐bit operation. The switching probability is continuously controlled by the in‐plane magnetic field and drive current, enabling tunable random bit generation.
Donghyeon Han, Chaehyeon Shin, Seok‐Jong Kim, Yunho Jang, Daekyu Koh, Taehwan Kim, Jaeheon Jung, Geon‐Woo Baek, Minseok Kang, Eunseok Kim, Geun‐Hee Lee, Jeongchun Ryu, Makoto Kohda, Junsaku Nitta, Kab‐Jin Kim, Jongsun Park, Kyung‐Jin Lee, Byong‐Guk Park   +17 more
wiley   +1 more source

Survivability Analysis of LEO Satellite Networks Based on Network Utility

IEEE Access, 2019
The LEO satellite network is threatened by accidental faults, malicious attacks and other factors during its operation. This paper proposed a model of survivability evaluation based on network utility.
Yuanyuan Nie, Zhigeng Fang, Su Gao
doaj   +1 more source

Neuromorphic Near‐Sensor and In‐Sensor Computing Enabled by Next‐Generation Material‐Based Sensors

Advanced Science, EarlyView.
This Review presents a structural framework that classifies neuromorphic sensing into near‐sensor and in‐sensor architectures, clarifying physical coupling between sensing and computation. The framework connects neural and synaptic device functions with recent advances in optical, mechanical, and chemical sensing, compares energy consumption and ...
Su Yeon Jung, Gwang Ya Kim, Sejin Kim, Hyunjong Seo, Se Gi Lee, Sang Min Won, Dongjoon Rhee, Joohoon Kang   +7 more
wiley   +1 more source

Reinforcement Learning for Resource Allocation in LEO Satellite Networks [PDF]

IEEE Transactions on Systems, Man and Cybernetics, Part B (Cybernetics), 2007
In this paper, we develop and assess online decision-making algorithms for call admission and routing for low Earth orbit (LEO) satellite networks. It has been shown in a recent paper that, in a LEO satellite system, a semi-Markov decision process formulation of the call admission and routing problem can achieve better performance in terms of an ...
Usaha, W, Barria, J A
openaire   +4 more sources

Impurity Tolerance in LiFePO4 Cathodes: Contrasting Structural, Electronic, and Electrochemical Roles of Residual Ni and Cr

Advanced Science, EarlyView.
Impurity tolerance in LiFePO4 cathodes varies strongly with impurity type and content. Low Ni levels are accommodated within the lattice with minimal structural disruption, whereas higher Ni contents introduce antisite disorder. In contrast, Cr impurities segregate from the LiFePO4 framework, blocking lithium‐ion pathways and leading to inferior ...
Minjin Kim, Hyerin Jeon, Jinhee Lee, Jinsub Choi   +3 more
wiley   +1 more source

Airworthiness analysis of low earth orbit satellite communication technology for UAV application

Dianxin kexue, 2023
With the rapid development of unmanned aerial vehicle (UAV) and low earth orbit (LEO) satellite technology, the integrated network consisted of the space, air, ground and sea has promoted the wide development of Internet of remote things (IoRT) on the ...
Yaoyu HE, Chao ZHANG
doaj   +2 more sources

Network Pruning for Extending Satellite Service Life in LEO Satellite Constellations [PDF]

2015 IEEE International Conference on Data Science and Data Intensive Systems, 2015
We address the problem of network pruning for extending the service life of satellites in LEO constellations. Satellites in LEO constellations can spend over 30 % of their time under the earth's umbra, time during which they are powered by batteries.
Mohammed Hussein, Gentian Jakllari, Béatrice Paillassa   +2 more
openaire   +3 more sources

In Situ Confinement of 0D Halometallates Within Deep Eutectic Solvents: From Systematic Screening to Metal‐Tunable Luminescence for Anti‐Counterfeiting Eutectogels

Advanced Science, EarlyView.
We report photostable, photoluminescent deep eutectic solvents (DESs) powered by in situ‐formed zero‐dimensional (0D) halometallates. Stabilized by microenvironment‐controlling hydrogen bond acceptor (HBA) and donor (HBD) networks, these DESs exhibit vibrant, metal ion‐tunable emission (PLQY = 60.2%).
Jeesu Moon, Minkyu Jung, Woojin Jung, Jaeyune Ryu, Jae‐Seung Lee   +4 more
wiley   +1 more source

Analysis on Low-Earth-Orbit Constellation Networking and Adaptability of Ground IP Routing Technology

天地一体化信息网络, 2020
With the development of the national major project of space-integrated-ground information network including space-based access network and LEO constellation system,it is urgently to be solved how to deal with the routing problem of LEO constellation with
Ci HE, Yasheng ZHANG, Chenhua SUN, Xudong LI   +3 more
doaj   +2 more sources

Secure and Scalable Rerouting in LEO Satellite Networks

CoRR
Resilient routing in large-scale Low Earth Orbit (LEO) satellite networks remains a key challenge due to frequent and unpredictable link and node failures, potentially in response to cybersecurity breaches. While prior work has explored rerouting strategies with various levels of network awareness, their relative tradeoffs under dynamic failure ...
Yanev, L, Ronchetti, P, Smailes, J, Strohmeier, M   +3 more
openaire   +3 more sources