Results 71 to 80 of about 1,401 (153)

Parameter identification in prestressed concrete beams by incremental beam–column equation and physics‐informed neural networks

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 19, Page 2876-2899, 5 August 2025.
Abstract This paper explores a novel methodology for identifying prestress force (and bending rigidity) from the perspective of static deflection methods and derives an incremental beam–column equation (iBCE) by elucidating the mechanisms underlying the long‐ and short‐term behaviors, with particular emphasis on a physical system that disregards long ...
Yifan Yang, Zengwei Guo, Zhiyuan Liu
wiley   +1 more source

Efficient fetal-maternal ECG signal separation from two channel maternal abdominal ECG via diffusion-based channel selection

, 2017
There is a need for affordable, widely deployable maternal-fetal ECG monitors to improve maternal and fetal health during pregnancy and delivery. Based on the diffusion-based channel selection, here we present the mathematical formalism and clinical ...
Frasch, Martin G., Li, Ruilin, Wu, Hau-tieng   +2 more
core   +1 more source

Generalization of anomaly detection in bridge structures using a vibration‐based Siamese convolutional neural network

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 18, Page 2751-2768, 18 July 2025.
Abstract Corrosion is one of the main damages in steel bridges, which appears as a loss of material and sectional area and causes member failure over time. A reliable bridge management system not only should help in preventing catastrophic structural failure by employing an in‐time anomaly detection approach for all the bridges within a network but ...
Alireza Ghiasi, Zhen Zhang, Zijie Zeng, Ching Tai Ng, Abdul Hamid Sheikh, Javen Qinfeng Shi   +5 more
wiley   +1 more source

The Synchrosqueezed Method and Its Theory-Analysis-Based Novel Short-Time Fractional Fourier Transform for Chirp Signals

Remote Sensing
Time–frequency analysis is an important tool used for the processing and interpretation of non-stationary signals, such as seismic data and remote sensing data.
Zhen Li, Zhaoqi Gao, Liang Chen, Jinghuai Gao, Zongben Xu   +4 more
doaj   +1 more source

Blind separation of asymmetric signals based on Synchrosqueezing Wavelet Transform

MATEC Web of Conferences, 2018
A blind separation algorithm based on synchronous squeezing wavelet transform is proposed to solve the blind separation problem of single channel asymmetric signals in satellite communications.
Peng Chuang, Yang Xiaojing, Zhang Yu
doaj   +1 more source

A time-frequency based method for the detection and tracking of multiple non-linearly modulated components with births and deaths

, 2015
International audienceThe estimation of the components which contain the characteristics of a signal attracts great attention in many real world applications.
Li, Zhongyang, Martin, Nadine
core   +3 more sources

How Orienting and Defence Drives Oscillatory Responses in Human Visual and Motor Cortical Circuits During Viewing of Threat Pictures: Evidence From ssVEPs and Beta‐Band Desynchronization

European Journal of Neuroscience, Volume 61, Issue 12, June 2025.
Healthy human participants engage mainly in two fundamental response strategies towards threat related picture content: orienting and defence. Orienting has been associated with heart rate (HR) deceleration, whereas defence evokes HR acceleration.
Carlota Gil Martín, Silvia Molina Blanco, Miriam Díaz Sánchez, Sergio Felipe Calvo García, Gabriel Sánchez del Corral, Sara Pampín del Río, Stephan Moratti   +6 more
wiley   +1 more source

Wavelet-Enhanced Time-Frequency Analysis Method for Bearing Fault Detection of Rotating Machinery

IEEE Access
In industrial settings, analyzing vibration signals from rolling bearings is a key method for diagnosing faults in rotating machinery. However, these faults often appear as a series of transient events with quickly changing frequencies, which makes it ...
Gang Yu, Haoran Dong, Wenkai Wang, Aoran Wang, Mingxu Sun, Feng Li   +5 more
doaj   +1 more source

Time-frequency and time-scale analysis of deformed stationary processes, with application to non-stationary sound modeling

, 2016
International audienceA class of random non-stationary signals termed timbre×dynamics is introduced and studied. These signals are obtained by non-linear transformations of sta-tionary random gaussian signals, in such a way that the transformation can be
Omer, Harold, Torrésani, Bruno
core   +3 more sources

Network models for temporal data reconstruction for dam health monitoring

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 14, Page 2010-2031, 3 June 2025.
Abstract The reconstruction of monitoring data reconstruction is an important step in the process of structural health monitoring. Monitoring data reconstruction involves generating values that are close to the true or expected values, and then using the generated values to replace the anomalous data or fill in the missing data.
Yongjiang Chen, Kui Wang, Mingjie Zhao, JianFeng Liu   +3 more
wiley   +1 more source