Results 81 to 90 of about 1,686,769 (280)

PVmatAgent: A Large Language Model (LLM) Agent for Perovskite Photovoltaic Material Design and Analysis

Materials Genome Engineering Advances, EarlyView.
PVmatAgent, an LLM‐based autonomous agent integrating 13 domain‐specific tools, executes the complete photovoltaic materials discovery pipeline (from literature retrieval and crystal structure generation to efficiency prediction and commercial assessment), while preventing hallucination via an enforced output parser.
Hangyuan Deng, Yuyan Wu, Youle Wang, Lei Zhang   +3 more
wiley   +1 more source

Optimal Design of Elastic Plates: Hybrid Numerical Method Based on Homogenization and Shape Derivative

Mathematical Methods in the Applied Sciences, EarlyView.
ABSTRACT This paper focuses on optimal design problems in the context of the Kirchhoff‐Love model for pure bending of a thin, solid, symmetric plate under a transverse load. The objective is to simultaneously determine the optimal outer shape of the domain and the distribution of two isotropic materials within the domain in order to minimize compliance.
Ivana Crnjac, Jelena Jankov Pavlović, Petar Kunštek   +2 more
wiley   +1 more source

Robust Position Control of an Electro‐Hydraulic Actuator via Metaheuristic Optimization of a Fractional‐Order PID Controller

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this study, a robust position control strategy is presented for a two‐stage electro‐hydraulic actuator system using a fractional‐order proportional–integral–derivative (FOPID) controller tuned by Kirchhoff's law algorithm (KLA). Electro‐hydraulic systems exhibit strong nonlinearities, parameter uncertainties, and external disturbances ...
Ridvan Firat Cinar, Davut Izci, Serdar Ekinci, Mohammad Salman, Mohammad Al‐Rabayah, Ali Akdagli, Ali Yildiz, Filiz Karaomerlioglu, Gökhan Yüksek   +8 more
wiley   +1 more source

Normalized ground state solutions for Kirchhoff equation with subcritical or critical perturbation

Electronic Journal of Differential Equations
This article concerns the Kirchhoff equation with subcritical or critical perturbation. We establish the existence of normalized ground state solutions by using Pohozaev manifold and subcritical approximation methods.
Zian Fan
doaj  

An Iterative Method for the Interaction Between a Bounded Beam and an Interface Defect in Solids, Under Kirchhoff Approximation

, 2009
International audienceThe method of passive re-emission under Kirchhoff approximation is used in this paper in order to solve the problem of the interaction of a monochromatic ultrasonic bounded beam (emitted by a plane transducer) with a bi-dimensional ...
Potel, Catherine, Gatignol, Philippe, Bedrici, Nacera   +2 more
core   +1 more source

Detecting Loosening of Bolt‐Flanged Pipe Using Smoothed Pseudo Wigner–Ville Distribution: Digital Twin‐Based Approach Using Convolution Neural Networks

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT In this paper, an integrated digital twin‐based fault‐diagnosis framework is proposed to detect bolt loosening in flanged pipe connections. The approach combines finite element‐based numerical modeling, experimental modal analysis, and advanced signal processing‐assisted deep learning to achieve reliable loosening detection under operational ...
Milad Shabani Yousefabad, Behzad Totakhaneh Bonab, Morteza Homayoun Sadeghi, Mir Mohammad Ettefagh, Mohammad Reza Chalak Qazani   +4 more
wiley   +1 more source

Extension of the scalar Kirchhoff approximation for calculating the coherent scattering from multi-layers with random rough interfaces

, 2021
International audienceThis paper deals with the electromagnetic wave scatteringfrom multi-layered media, containing random rough interfaces.It presents an extension of a basic asymptotic modelcalled the Kirchhoff-tangent plane approximation (KA) tomulti ...
Pinel, Nicolas
core  

Application of Non‐Isothermal Network Theory With Curved‐Channel Element Characteristics to Predict Melt Conveying in High‐Performance Single‐Screw Extruders

Journal of Polymer Science, EarlyView.
This study presents a fast and accurate calculation tool to predict conveying of polymer melts in single‐screw extruders. Integrating generalized sub‐models into network theory allows to represent the complex screw shapes and material behavior more realistically. Tests on an industrial extruder show close agreement with experiments, outperforming older
Daniel Herzog, Wolfgang Roland, Christian Marschik, Gerald Berger‐Weber   +3 more
wiley   +1 more source

Gouy Phase Shift Calculation of Arbitrary Modes Diffracted From Optical Waveguides

IEEE Access
We present an accurate method to calculate the Gouy Phase Shift of arbitrary beams, combining the Fresnel-Kirchhoff diffraction formula, or, alternatively, the Angular Spectrum Representation with the transverse momenta spreading formulation.
Wender G. Daniel, Gilliard N. Malheiros-Silveira   +1 more
doaj   +1 more source

Integrating Image Segmentation and Deep Learning to Improve Radio Frequency Propagation Models

International Journal of Satellite Communications and Networking, EarlyView.
ABSTRACT This paper proposes a multi‐sensor approach to improve radio frequency (RF) propagation models, which play a key role in the rapidly expanding field of connected vehicle technology. Focusing on the 1‐ to 20‐GHz frequency range, which is critical for both satellite‐to‐vehicle and base station‐to‐vehicle communications, our study introduces a ...
Jonathan Israel, Xavier Boulanger, Vegard Arneson   +2 more
wiley   +1 more source