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Related Concept Videos

Interference and Superposition of Waves01:07

Interference and Superposition of Waves

When two waves of the same nature occur in the same region simultaneously, they result in interference. Interference of waves implies that the net effect of the waves is the sum of the individual waves' effects. However, it does not imply that the individual waves affect the propagation of other waves.
Interference occurs in mechanical waves, such as sound waves, waves on a string, and surface water waves. Mechanical waves correspond to the physical displacement of particles. Hence,...
Interference: Path Lengths01:10

Interference: Path Lengths

Consider two sources of sound, that may or may not be in phase, emitting waves at a single frequency, and consider the frequencies to be the same.
Two special sources may be considered when they are in phase. This can be easily achieved by feeding the two sources from the same source. An example would be synchronizing the two speakers by feeding them with the same source, such as the sound waves produced by a tuning fork. This setup ensures that the two sources have the same frequency and are...
Sound Waves: Interference00:53

Sound Waves: Interference

Sound waves can be modeled either as longitudinal waves, wherein the molecules of the medium oscillate around an equilibrium position, or as pressure waves. When two identical waves from the same source superimpose on each other, the combination of two crests or two troughs results in amplitude reinforcement known as constructive interference. If two identical waves, that are initially in phase, become out of phase because of different path lengths, the combination of crests with troughs...
Mutual Inductance01:24

Mutual Inductance

Inductance is the property of a device that tells us how effectively it induces an emf in another device. In other words, it is a physical quantity that expresses the effectiveness of a given device.
When two circuits carrying time-varying currents are close to one another, the magnetic flux through each circuit varies because of the changing current in the other circuit. Consequently, an emf is induced in each circuit by the changing current in the other. Therefore, this type of emf is called...
Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences01:20

Inductively Coupled Plasma-Mass Spectrometry (ICP-MS): Interferences

Inductively coupled plasma–mass spectrometry (ICP–MS) is a highly selective and sensitive technique for accurate elemental analysis. Though the analysis of ICP–MS mass spectra is comparatively straightforward, it is affected by spectroscopic and non-spectroscopic interferences. Spectroscopic interferences arise when the plasma contains ionic species with an m/z value the same as the analyte ion. Spectroscopic interference can be categorized as isobaric, polyatomic ions, and refractory oxide ion...
Intermolecular Forces03:13

Intermolecular Forces

Atoms and molecules interact through bonds (or forces): intramolecular and intermolecular. The forces are electrostatic as they arise from interactions (attractive or repulsive) between charged species (permanent, partial, or temporary charges) and exist with varying strengths between ions, polar, nonpolar, and neutral molecules. The different types of intermolecular forces are ion–dipole, dipole–dipole, hydrogen bonds, and dispersion; among these, dipole–dipole, hydrogen bonds, and dispersion...

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Measurement of the Directional Information Flow in fNIRS-Hyperscanning Data using the Partial Wavelet Transform Coherence Method
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Mutual interference is common and mostly intermediate in magnitude.

John P Delong1, David A Vasseur

  • 1Department of Ecology and Evolutionary Biology, Yale University, New Haven, CT 06520, USA. john.delong@yale.edu

BMC Ecology
|January 8, 2011
PubMed
Summary
This summary is machine-generated.

Mutual interference competition, where individuals hinder each other

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Area of Science:

  • Ecology
  • Population Dynamics
  • Behavioral Ecology

Background:

  • Interference competition negatively impacts resource access due to the presence of other individuals.
  • Mutual interference within a population is modeled using a scaling exponent (m) on predator numbers.
  • Theories range from prey dependence (m=0) to ratio dependence (m=-1), with recent arguments for intermediate levels.

Purpose of the Study:

  • To empirically evaluate the prevalence and magnitude of intermediate mutual interference.
  • To compile and analyze the largest dataset of unbiased mutual interference estimates.

Main Methods:

  • Literature review to gather existing estimates of mutual interference.
  • Analysis of additional empirical data to supplement the literature review.
  • Compilation of a comprehensive dataset of mutual interference estimates.

Main Results:

  • The compiled dataset included examples consistent with both prey and ratio dependence.
  • A strong tendency towards ratio dependence was observed, with a median m of -0.7 and mean m of -0.8.
  • Only one dataset aligned with prey dependence, suggesting it is less common.

Conclusions:

  • Empirical data support the hypothesis that mutual interference is predominantly intermediate.
  • Interference competition appears to be a common phenomenon in studied systems.
  • Further research is needed on factors influencing interference and its density dependence.