Results 91 to 100 of about 69,939 (249)
Scientific ReportsThe structural, optical, photocatalytic and dielectric properties of Cd0.40Mn0.60ZnO2 annealed nanocomposites prepared by Hydrothermal and subsequently annealed at temperatures between 200 °C and 600 °C.
Mansour Mohamed +4 more
doaj +1 more source
Fortifying the Backbone: Shielding HAPS Backhaul From Intelligent Jamming
IEEE Open Journal of the Communications SocietyHigh altitude platform stations (HAPS) as International Mobile Telecommunications (IMT) base stations (BSs) or HIBS have emerged as a key enabler to extend wireless connectivity to remote areas, emergency services coordination, and backhaul support ...
Xhelja Kodheli +4 more
doaj +1 more source
Metasurface‐Enabled Active‐Like Passive Radar
Advanced Science, EarlyView.A programmable space‐time‐coding metasurface embeds distinct spatiotemporal tags into ambient wireless signals, allowing passive radar to operate in an active‐like manner. By enabling code‐correlated reconstruction under interference, the approach supports robust real‐time UAV tracking in complex environments and points to intelligent, low‐power ...
Mingyi Li +7 more
wiley +1 more source
Advanced Science, EarlyView.The configurational‐entropy strategy enables rapid and sensitive ethanol detection using a multicomponent oxide. The high‐entropy (InSnFeZnW)Ox provides enriched oxygen vacancies and diverse adsorption sites that strengthen surface reactivity. The sensor achieves a 5135% ethanol response with fast kinetics and stable long‐term operation.
Gi Baek Nam +19 more
wiley +1 more source
Научно-технический вестник информационных технологий, механики и оптикиEvidence-based technologies for product quality have a positive impact on a wide range of social and economic processes. One of the immanent problems of implementing such technologies is determined by the contradiction between the need to ensure open ...
V. H. Le +3 more
doaj +1 more source
Advanced Electronic Materials, EarlyView.A diagnostic method for reconfigurable intelligent surfaces (RIS) based on non‐uniform space‐time‐coding modulation is presented. Fault localization is achieved via amplitude‐only spectral measurements, eliminating the need for complex signal processing. A one‐to‐one mapping between harmonic components and RIS elements enables accurate detection.
Xiao Qing Chen +8 more
wiley +1 more source
Provider selection and task allocation model in telecommunications with QoS degradation policy
, 2014 Telecommunications has become a very competitive environment with numerous providers, carriers, and services recently. Every firm uses telecommunication networks in different amounts and ways to carry out their daily operations such as video conferencing, voice over IP and data applications.
Kasap, Nihat +3 more
openaire +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 +4 more
wiley +1 more source
Power system design for a Jupiter solar electric propulsion spacecraft [PDF]
Power system design for Jupiter solar electric propulsion ...
Loucks, R. E., Truscello, V.
core +1 more source
Photoresponse Properties of Ambipolar Transport in WSe2 Field‐Effect Transistors
Advanced Electronic Materials, EarlyView.This study explores the photoresponse of WSe2 ambipolar field‐effect transistors, which exhibit unipolar, saturation, and ambipolar transport regions. Light illumination induces a shift of critical voltage with enhanced photocurrent generation driven by the photogating effect without the material degradation seen in avalanche photodetectors. This study
Jongeun Yoo +11 more
wiley +1 more source