Results 1 to 10 of about 4,075,278 (310)
Vehicle Bump Testing Parameters Influencing Modal Identification of Long-Span Segmental Prestressed Concrete Bridges [PDF]
Sensors, 2022 In-service prestressed concrete box girder bridges have received increasing attention in recent years due to a large number of bridges reaching decades in service.
Wilson Hernandez +2 more
doaj +2 more sources
Modal Identification Techniques for Concrete Dams: A Comprehensive Review and Application
SciThroughout history, the implementation of structural health monitoring systems has played a crucial role in evaluating the responses of dams to environmental and human-induced threats. By continuously monitoring structural integrity and analyzing dynamic
Hasan Mostafaei
doaj +2 more sources
Online Modal Identification of Concrete Dams Using the Subspace Tracking-Based Method
Shock and Vibration, 2019 To investigate the time-varying dynamic characteristics of concrete dams under the excitation of large earthquakes for online structural health monitoring and damage evaluation, an online modal identification procedure based on strong-motion records is ...
Lin Cheng +3 more
doaj +2 more sources
A multi-modal parcellation of human cerebral cortex
Nature, 2016 Understanding the amazingly complex human cerebral cortex requires a map (or parcellation) of its major subdivisions, known as cortical areas. Making an accurate areal map has been a century-old objective in neuroscience.
Matthew F Glasser +2 more
exaly +2 more sources
An Energy Approach to the Modal Identification of a Variable Thickness Quartz Crystal Plate [PDF]
SensorsThe primary objective of modal identification for variable thickness quartz plates is to ascertain their dominant operating mode, which is essential for examining the vibration of beveled quartz resonators.
Zhe Wang +4 more
doaj +2 more sources
Hybrid Time–Frequency Analysis for Micromobility-Based Indirect Bridge Health Monitoring [PDF]
SensorsBridges serve as vital connectors in the transportation network and infrastructure. Given their significance, it is crucial to continuously monitor bridge conditions to ensure the efficient operation of transportation systems.
Premjeet Singh +2 more
doaj +2 more sources
High-Speed Railway, 2023 Modal and damage identification based on ambient excitation can greatly improve the efficiency of high-speed railway bridge vibration detection. This paper first describes the basic principles of stochastic subspace identification, peak-picking, and ...
Jiahuan Li +3 more
doaj +1 more source
Bridge modal identification using acceleration measurements within moving vehicles [PDF]
Mechanical systems and signal processing, 2020 Vehicles commuting over bridge structures respond dynamically to the bridge’s vibrations. An acceleration signal collected within a moving vehicle contains a trace of the bridge’s structural response, but also includes other sources such as the vehicle ...
Soheil Sadeghi Eshkevari +2 more
semanticscholar +1 more source
Enhanced drive‐by bridge modal identification via dual Kalman filter and singular spectrum analysis
Structural Control & Health Monitoring, 2022 The drive‐by bridge health monitoring is to assess the bridge condition using the acceleration responses measured on the body or axle of instrumented vehicles. The vehicle responses are greatly affected by the road surface roughness that makes the bridge
Jiantao Li, Xinqun Zhu, Jian Guo
semanticscholar +1 more source
Modality effects in word identification [PDF]
Memory & Cognition, 1974 An experiment was designed to investigate the locus of persistence of information about presentation modality for verbal stimuli. Twenty-four Ss were presented with a continuous series of 672 letter sequences for word/nonword categorization. The sequences were divided equally between words and nonwords, and each item was presented twice in the series ...
K, Kirsner, M C, Smith
openaire +2 more sources