Results 31 to 40 of about 1,686,769 (280)

Measurement and Analysis of Scattering From Slightly Rough Dielectric Surfaces in 100- and 300-GHz Bands

IEEE Access
Due to the extremely short wavelengths of terahertz waves, even slight surface roughness on everyday dielectric materials can significantly influence future terahertz-wave propagation and communication systems.
Riku Yoshino, Jerdvisanop Chakarothai, Keizo Inagaki, Tetsuya Kawanishi   +3 more
doaj   +1 more source

Miraculous Success? Inconsistency and Untruth in Kirchhoff’s Diffraction Theory [PDF]

, 2010
Kirchhoff’s diffraction theory is introduced as a new case study in the realism debate. The theory is extremely successful despite being both inconsistent and not even approximately true. Some habitual realist proclamations simply cannot be maintained in
Vickers, P, Saatsi, Juha, Vickers, Peter, Juha Saatsi, Saatsi, J, Peter Vickers   +5 more
core   +1 more source

Diffusely scattered and transmitted elastic waves by random rough solid-solid interfaces using an elastodynamic Kirchhoff approximation

, 2017
Elastic waves scattered by random rough interfaces separating two distinct media play an important role in modelling phonon scattering and impact upon thermal transport models, and are also integral to ultrasonic inspection.
F. Shi, M. Lowe, R. Craster
semanticscholar   +1 more source

Physics-Based Predictions for Coherent Change Detection Using X-Band Synthetic Aperture Radar

EURASIP Journal on Advances in Signal Processing, 2005
A theoretical model is developed to describe the interferometric coherency between pairs of SAR images of rough soil surfaces. The model is derived using a dyadic form for surface reflectivity in the Kirchhoff approximation.
Mark Preiss, Mark L. Williams
doaj   +1 more source

Memristive‐Gated RC‐Delay Synaptic Transistors for Time‐Encoded Analog in‐Memory Computing

Advanced Functional Materials, EarlyView.
A Memristive‐Gated Transistor for Time‐Encoded Analog In‐Memory Computing — By exploiting the RC delay of a self‐rectifying interface‐type memristor, nonlinear I–V distortion is structurally bypassed, enabling 3‐bit nonvolatile memory, spike‐timing‐based analog encoding, and hardware‐calibrated reservoir‐computing validation within a unified device ...
Yun‐Seo Shin, Eunjoo Yoo, Ki‐Hoon Son, Hyun‐Sik Kim, Dae‐Hee Han, Jeong Hyeon Son, Seung Hwan Lee, Hong‐Sub Lee   +7 more
wiley   +1 more source

Hybrid Ferroelectric Tunnel Junctions with Intrinsic Nonlinearity and Self‐Rectification via Interfacial Reconstruction

Advanced Functional Materials, EarlyView.
Rapid thermal annealing reconstructs the BCFO/Nb:STO interface into an atomically thin reconstructed interfacial layer, which reshapes the tunneling barrier and converts a high‐TER ferroelectric tunnel junction into an intrinsically nonlinear, self‐rectifying device.
Hojin Lee, Joonbong Lee, Jinho Byun, Sang‐Hyeok Yang, A young Cho, Sangwoo Lee, Dae Haa Ryu, Hyunbin Chung, Hee Seo Yun, Moon Seop Choi, Yesul Choi, Sungkyun Park, Min‐Hyung Jung, Dongwon Lee, Yoon‐Uk Heo, Hu Young Jeong, Hongseok Kim, Shinhyeong Lee, Yunseok Kim, Young‐Min Kim, Jaekwang Lee, Taekjib Choi   +21 more
wiley   +1 more source

Local Projection-Based Stabilized Mixed Finite Element Methods for Kirchhoff Plate Bending Problems

Abstract and Applied Analysis, 2013
Based on stress-deflection variational formulation, we propose a family of local projection-based stabilized mixed finite element methods for Kirchhoff plate bending problems.
Xuehai Huang
doaj   +1 more source

Mechanistic Origins of Chemo‐Mechanical Instability and Failure in Solid‐State Lithium‐Sulfur Electrodes

Advanced Functional Materials, EarlyView.
Conversion‐induced sulfur expansion generates strong mechanical constraints and localized stresses within solid‐state Li‐S cathodes. Heterogeneous solid‐electrolyte confinement creates tensile strain‐energy hotspots that govern particle cracking. Larger sulfur particles accelerate fracture, while higher porosity relaxes constraint and delays damage ...
Arpan K. Sharma, Ahmad Ahmad, Bairav S. Vishnugopi, Partha P. Mukherjee   +3 more
wiley   +1 more source

Global Existence and Decay Estimates for a Viscoelastic Petrovsky–Kirchhoff-Type Equation with a Delay Term

Axioms
In this paper, we consider a viscoelastic Kirchhoff equation with a delay term in the internal feedback. By using the Faedo–Galerkin approximation method, we prove the well posedness of the global solutions.
Noureddine Sebih, Abdelhamid Mohammed Djaouti, Chafi Boudekhil, Ashraf Al-Quran   +3 more
doaj   +1 more source

A MATHEMATICAL MODEL OF AN ARTERIAL BIFURCATION

Ural Mathematical Journal, 2019
An asymptotic model of an arterial bifurcation is presented. We propose a simple approximate method of calculation of the pressure drop matrix. The entries of this matrix are included in the modified transmission conditions, which were introduced earlier
German L. Zavorokhin
doaj   +1 more source