Results 121 to 130 of about 693,661 (315)
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
The Mission-Aransas Observer (2009, Autumn)
, 2009 Marine ...
Mission-Aransas National Estuarine Research Reserve
core +1 more source
Advanced Electronic Materials, EarlyView.This paper reviews the physics of liquid metals in RF devices, including the influence of mechanical strain on resonance as well as fabrication methods and strategies for designing tunable and strain‐tolerant inductors, capacitors, and antennas.
Md Saifur Rahman, William J. Scheideler
wiley +1 more source
The Mission-Aransas Observer (2011, Autumn)
, 2011 Marine ...
Mission-Aransas National Estuarine Research Reserve
core +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
The Mission-Aransas Observer (2010, Spring)
, 2010 Marine ...
Mission-Aransas National Estuarine Research Reserve
core +1 more source
Recent Advances in Programmable Metasurfaces and Meta‐Devices
Advanced Electronic Materials, EarlyView.Programmable metasurfaces enable various novel functionalities by dynamically tuning electromagnetic wavefronts. This article provides a comprehensive review of recent advances in microwave and terahertz programmable metasurfaces, covering electrical, thermal, optical, and mechanical control mechanisms.
Linda Shao +4 more
wiley +1 more source
Oesophageal cancer and experience with endoscopic stent intubation at St. Marys Hospital, Nairobi
The Annals of African Surgery, 2008 Background: Oesophageal cancer often presents in advanced stages not amenable to surgical resection. In such patients, palliation of dysphagia remains the mainstay of management.
Ndonga A.K, Rucha M.R, Oigara R.
doaj