Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Chromatin Structure Regulates pre-mRNA Processing02:41

Chromatin Structure Regulates pre-mRNA Processing

8.1K
In eukaryotic cells, nascent mRNA transcripts need to undergo many post-transcriptional modifications to reach the cell cytoplasm and translate into functional proteins. For a long time, transcription and pre-mRNA processing were considered two independent events that occur sequentially in the cell. However, it has now been well established that transcription and pre-mRNA processing are two simultaneous processes that are precisely regulated inside the cell.
The chromatin structure, especially...
8.1K
Sign Test for Matched Pairs01:17

Sign Test for Matched Pairs

394
The sign test for matched pairs offers a robust method for comparing two paired samples, often for the effects of an intervention in one of them. This method is very useful in situations where the underlying distribution of the data is unknown. The test compares two related samples—often pre- and post-treatment measurements on the same subjects—to determine if there are significant differences in their median values.
To conduct the sign test, we first calculate the differences in...
394
Passive Filters01:27

Passive Filters

974
Passive filters are utilized to shape the frequency spectrum of signals across a diverse array of applications. These filters, using only passive elements like resistors (R), inductors (L), and capacitors (C), are capable of selectively allowing or blocking certain frequency ranges without the need for external power sources.
Low-Pass Filters
Low-pass filters are designed to transmit signals with frequencies lower than the cutoff frequency, ωc, and attenuate those above it. The cutoff...
974
Active versus Passive Immunity01:31

Active versus Passive Immunity

10.1K
Immunity, along with the ability to limit pathogen growth to prevent significant body tissue damage, can be gained either by (1) actively developing an immune response within the individual after exposure to a pathogen or after getting vaccinated or (2) passively transferring immune components from an immune individual to one who is nonimmune. Both these forms of immunity can be found naturally and in medical practices.
Active Immunity
Active immunity refers to the resistance one develops...
10.1K
Wilcoxon Signed-Ranks Test for Matched Pairs01:09

Wilcoxon Signed-Ranks Test for Matched Pairs

489
The Wilcoxon signed-rank test for matched pairs evaluates the null hypothesis by combining the ranks of differences with their signs. It essentially tests whether the median of the differences in a population of matched pairs is zero. Since the test incorporates more information than the sign test, it generally yields more trustable conclusions. This test also does not require the data to follow a normal distribution, but two conditions must be met for it to be applicable: (1) the data must...
489
Passive Diffusion: Overview and Kinetics01:17

Passive Diffusion: Overview and Kinetics

1.3K
Passive diffusion is a critical process that allows small lipophilic drugs to cross the cell membrane along a concentration gradient. This mechanism's efficiency depends on four primary factors: the membrane's surface area, the drug's lipid-water partition coefficient, the concentration gradient, and the membrane's thickness.
When administered orally, drugs establish a substantial concentration gradient between the gastrointestinal (GI) lumen and the bloodstream, expediting...
1.3K

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Lower Limb Vein Reflux Patterns and Clinical Correlates in Ghana.

Annals of vascular surgery·2026
Same author

Burnout Without Borders: Exploring Burnout and the Validity of the Maslach Burnout Inventory Among Medical Students Across Four Countries in Africa.

West African journal of medicine·2025
Same author

Measuring phase difference to sense small-scale ocean sound-speed structure.

JASA express letters·2025
Same author

Phase stability of convergence zone propagation at mid-frequency.

The Journal of the Acoustical Society of America·2024
Same author

Observations and simulations of caustic formation due to oceanographic fine structure.

The Journal of the Acoustical Society of America·2023
Same author

Experimental demonstration of low signal-to-noise ratio matched field processing with a geoacoustic model extracted from noise.

The Journal of the Acoustical Society of America·2023
Same journal

High-resolution depth estimation for multiple wideband sources in deep sea via sparse Bayesian learninga).

The Journal of the Acoustical Society of America·2026
Same journal

Depression markers in speech: An approach based on tract variables dynamics.

The Journal of the Acoustical Society of America·2026
Same journal

The oyster toadfish (Opsanus tau) alters active and diurnal calling amid vessel noise in New York City.

The Journal of the Acoustical Society of America·2026
Same journal

Experimental noise characterisation of phase-locked tandem-rotor in edgewise flight.

The Journal of the Acoustical Society of America·2026
Same journal

The tune-text-temporal synergy: Prosodic effects of final segmental weakening in Neapolitan.

The Journal of the Acoustical Society of America·2026
Same journal

Monitoring vessel movement above critical offshore infrastructure using distributed acoustic sensing.

The Journal of the Acoustical Society of America·2026
See all related articles

Related Experiment Video

Updated: Jan 25, 2026

Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring
08:16

Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring

Published on: October 24, 2025

539

Passive structural monitoring based on data-driven matched field processing.

E Lubeigt1, S Rakotonarivo1, S Mensah1

  • 1Aix-Marseille Université, CNRS, Centrale Marseille, Laboratory of Mechanics and Acoustics, Marseille, France.

The Journal of the Acoustical Society of America
|May 4, 2019
PubMed
Summary
This summary is machine-generated.

This study introduces a passive, data-driven method for defect localization using ambient noise. It requires only acoustic measurements and no prior structural knowledge, enabling efficient structural health monitoring.

More Related Videos

Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures
10:10

Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures

Published on: December 1, 2020

5.6K
Data Communication Based on MQTT in a Polymer Extrusion Process
08:15

Data Communication Based on MQTT in a Polymer Extrusion Process

Published on: July 15, 2022

3.8K

Related Experiment Videos

Last Updated: Jan 25, 2026

Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring
08:16

Collecting and Processing Drone-based Remotely Sensed Data for Use in Forest Recovery Monitoring

Published on: October 24, 2025

539
Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures
10:10

Neutron Crystallography Data Collection and Processing for Modelling Hydrogen Atoms in Protein Structures

Published on: December 1, 2020

5.6K
Data Communication Based on MQTT in a Polymer Extrusion Process
08:15

Data Communication Based on MQTT in a Polymer Extrusion Process

Published on: July 15, 2022

3.8K

Area of Science:

  • Structural Health Monitoring
  • Acoustic Sensing
  • Non-Destructive Testing

Background:

  • Defect localization in structures is crucial for safety and maintenance.
  • Existing methods often require prior knowledge of the structure or active sensing.
  • Ambient noise offers a ubiquitous and passive source for structural analysis.

Purpose of the Study:

  • To develop a passive, data-driven method for localizing structural defects.
  • To utilize ambient noise for defect detection without prior structural information.
  • To validate the method's performance using numerical experiments.

Main Methods:

  • Derivation of a passive, data-driven localization technique.
  • Acquisition of acoustic measurements in a random noise field before and after perturbation.
  • Retrieval of Green's functions via cross-correlation of acoustic measurements.
  • Application of frequency domain matched field processing for perturbation localization.
  • Implementation and comparison of Bartlett, minimum variance, and white noise gain constraint processors.

Main Results:

  • Successfully localized structural perturbations using only ambient noise.
  • Demonstrated the method's independence from prior structural knowledge.
  • Quantified the performance of different matched field processing algorithms in defect localization.

Conclusions:

  • The developed passive method effectively localizes structural defects using ambient noise.
  • This approach offers a non-invasive and efficient alternative for structural health monitoring.
  • Matched field processing provides a robust framework for analyzing acoustic data for defect detection.