Results 151 to 160 of about 18,652 (263)

Research on Radio Altimetry in Urban Environments Based on Electromagnetic Simulation Echo Modeling Technology. [PDF]

Sensors (Basel)
Xiong J, Xie X, Guan X, Xu Y, Li C.
europepmc   +1 more source

Conformal Reconfigurable Intelligent Surfaces: A Cylindrical Geometry Perspective

Advanced Electronic Materials, EarlyView.
Cylindrical reconfigurable intelligent surfaces are explored for low‐complexity beam steering using one‐bit meta‐atoms. A multi‐level modeling approach, including optimization‐based synthesis, demonstrates that even minimal hardware can support directive scattering.
Filippo Pepe, Ivan Iudice, Giuseppe Castaldi, Marco Di Renzo, Vincenzo Galdi   +4 more
wiley   +1 more source

Dynamic Fracture Monitoring Technique in Deep Coal Seams Based on a Time-Varying Electric Field Method. [PDF]

ACS Omega
Zhang J, Yang F, An Q, Ding H, Cao X, Yan B, Deng Q.   +6 more
europepmc   +1 more source

Criticality Analysis of the Lower Ionosphere Perturbations Prior to the 2016 Kumamoto (Japan) Earthquakes as Based on VLF Electromagnetic Wave Propagation Data Observed at Multiple Stations. [PDF]

Entropy (Basel), 2018
Potirakis SM, Asano T, Hayakawa M.
europepmc   +1 more source

Updatable Closed‐Form Evaluation of Arbitrarily Complex Multiport Network Connections

Advanced Electronic Materials, EarlyView.
The inverse design of electrically large wave devices often uses reduced‐order multiport models with discrete optimization, requiring many evaluations of complex interconnections between subsystems that differ only in a few blocks. This paper introduces a closed‐form framework enabling efficient Woodbury low‐rank updates of related, previous ...
Hugo Prod'homme, Philipp del Hougne
wiley   +1 more source

Lightning-generated waves detected at Mars. [PDF]

Sci Adv
Němec F, Rosická K, Kolmašová I, Santolík O.   +3 more
europepmc   +1 more source

Terahertz Channel Modeling, Estimation and Localization in RIS‐Assisted Systems

Advanced Electronic Materials, EarlyView.
Reconfigurable intelligent surfaces have become a recent intensive research focus. Based on practical applications, channel strategies for RIS‐assisted terahertz wireless communication systems are categorized into three different types: channel modeling, channel estimation, and channel localization.
Hongjing Wang, Weipeng Wang, Xuan Cong, Shiyu Wang, Gao Li, Sen Gong, Lin Huang, Hongxin Zeng, Yaxin Zhang, Ziqiang Yang   +9 more
wiley   +1 more source

Observation of synthetic moving effect in metamaterials. [PDF]

Light Sci Appl
Yang Q, Li Z, Wen X, You O, Ishihara T, Yin X, Zhang S.   +6 more
europepmc   +1 more source

Fundamental Challenges, Physical Implementations, and Integration Strategies for Ising Machines in Large‐Scale Optimization Tasks

Advanced Electronic Materials, EarlyView.
Ising machines are emerging as specialized hardware solvers for computationally hard optimization problems. This review examines five major platforms—digital CMOS, analog CMOS, emerging devices, coherent optics, and quantum systems—highlighting physics‐rooted advantages and shared bottlenecks in scalability and connectivity.
Hyunjun Lee, Joon Pyo Kim, Sanghyeon Kim
wiley   +1 more source

Research on Electro-Acoustic Synergistic Partial Discharge Detection Technology for Cable Terminations. [PDF]

Sensors (Basel)
Chen C, Wang X, Li Y, Chen Q.
europepmc   +1 more source