Results 51 to 60 of about 441,238 (236)

RIS-Assisted Wireless System in the Presence of Direct Channel: Channel Statistics and Performance Analysis

open access: yesIEEE Access
A reconfigurable intelligent surface (RIS)-aided wireless communication system is considered in this paper, where the transmitter sends data to the receiver via a direct link and the RIS.
Soumya P. Dash, Debasish Ghose
doaj   +1 more source

Upper bound limit analysis of coral reef limestone cavern roof stability incorporating a tension‐shear failure mechanism with tensile‐strength cut‐off

open access: yesDeep Underground Science and Engineering, EarlyView.
For the roof of coral reef limestone caverns, a novel tension‐shear composite failure mechanism was developed. The most critical tensile crack model was identified using a hybrid optimization algorithm, and the stability of the cavern roof was analyzed accordingly.
Dongsheng Xu, Chenxu Li, Chuantan Hou
wiley   +1 more source

Envelope

open access: yes
Large manila envelope on which Chilson has written “Section IV ...

core   +4 more sources

Workspace Definition in Parallelogram Manipulators: A Theoretical Framework Based on Boundary Functions

open access: yesTechnologies
Robots with parallelogram mechanisms are widely employed in industrial applications due to their mechanical rigidity and precise motion control. However, the analytical definition of feasible workspace regions free from self-collisions remains an open ...
Luis F. Luque-Vega   +8 more
doaj   +1 more source

Investigation on tunnel stability considering pipe‐roof support with transparent soil technology

open access: yesDeep Underground Science and Engineering, EarlyView.
This study integrates transparent soil technology, 3D reconstruction and numerical simulation to captures the full‐field deformation of shield tunnel instability. Results demonstrate that pipe‐roof support enhances stability via the “soil‐arching barrier effect,” effectively restraining failure wedge development by extending stress transfer paths ...
Zhi Jia   +4 more
wiley   +1 more source

EEG CONNECT: A proposed reporting checklist for EEG‐based connectivity studies in clinical epilepsy research

open access: yesEpilepsia Open, EarlyView.
Abstract EEG‐based connectivity analysis has emerged as a promising approach for investigating brain network dynamics in clinical epilepsy research. However, the diversity of analytical approaches, preprocessing pipelines, and reporting practices poses challenges to reproducibility and clinical translation.
Naoto Kuroda   +6 more
wiley   +1 more source

Complete characterization of the asymptotic stability region for single-delay second-order linear systems

open access: yesFrontiers in Control Engineering
Determining the exact set of parameters for which a linear time-delay system is asymptotically stable remains a central problem in the analysis of retarded functional differential equations, and complete, closed-form answers are scarce even in low ...
José Ricardo Cuesta-García   +1 more
doaj   +1 more source

Rocking and Rolling of Rigid Polygons Under Seismic Excitation

open access: yesEarthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT We present an event driven analytical framework for rigid cyclic polygons subjected to horizontal ground excitation in which uplift, impact, and successive pivot switching are treated within a unified non‐smooth dynamical description. Rolling is defined as a sequence of energetically admissible transitions between neighbouring vertices tied to
Atif Rasheed   +1 more
wiley   +1 more source

Scott's Representation Theorem and the Univalent Karoubi Envelope

open access: yesCoRR
20 pages, LaTeX; submitted to the 16th International Conference on Interactive Theorem Proving (ITP 2025)
van der Leer, Arnoud   +2 more
openaire   +5 more sources

Forced Draught Impact on Externally Venting Flames: An Experimental and Numerical Investigation

open access: yesFire and Materials, EarlyView.
ABSTRACT Wind can significantly influence fire development and spread in urban and forest environments causing fatal consequences for the public, the first responders, and the environment. Wind‐driven fires can have a significant impact on structural fires as wind can increase the fire's intensity, development, and flame spread.
Anoop Subramania Warrier   +5 more
wiley   +1 more source

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