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

Sum and Difference OpAmps01:22

Sum and Difference OpAmps

874
Operational amplifiers (op-amps) are versatile devices that extend beyond amplification. In this context, two specific op-amp configurations are explored: the summing and difference amplifiers.
A summing amplifier, or an adder, utilizes an op-amp to merge multiple input signals into a single output signal. When audio signals are introduced into its input channels, the input resistors initiate currents that traverse feedback resistors, resulting in an output voltage. Applying Kirchhoff's...
874
Odds Ratio01:09

Odds Ratio

227
The odds ratio (OR) is a statistical measure used extensively in epidemiology and research to quantify the strength of association between exposure and outcome across different groups. Unlike relative risk, which compares the probabilities of an event occurring, the odds ratio compares the odds of an event occurring in the exposed group to the odds of it occurring in the unexposed group. The odds, in this context, are calculated as the probability of the event happening divided by the...
227
Characteristics of Practical Op Amps01:16

Characteristics of Practical Op Amps

600
A difference amplifier, a crucial component in numerous electronic devices, ideally amplifies only the difference-mode signal, which is the difference between two input signals. However, in practical circuits, the output voltage depends on both the differential gain and the common-mode gain.
The ratio of differential gain to the common-mode gain is defined as the common-mode rejection ratio (CMRR). This ratio quantifies the ability of operational amplifiers (op-amps) to reject common-mode...
600
Principle of Equivalence01:18

Principle of Equivalence

2.3K
According to Albert Einstein (1897-1955), free-falling and feeling weightless are intrinsically linked. If a person were in free-fall under gravity, for example, diving towards the Earth from an airplane, they would feel completely weightless. Similarly, a person descending in a lift may feel partially weightless. Broadly speaking, it is assumed that an object in a uniform gravitational field and an object undergoing constant acceleration in the absence of gravity are under the same...
2.3K
Column Efficiency: Rate Theory01:12

Column Efficiency: Rate Theory

468
The rate theory of chromatography provides quantitative insight into the shapes and widths of elution bands. These bands are based on the random-walk mechanism governing molecular migration within a column. The Gaussian profile of chromatographic bands arises from the cumulative effect of random molecular motions as they progress through the column.
During elution, a solute molecule experiences numerous transitions between stationary and mobile phases, exhibiting irregular residence times in...
468
Routh-Hurwitz Criterion II01:19

Routh-Hurwitz Criterion II

373
In the application of the Routh-Hurwitz criterion, two specific scenarios can arise that complicate stability analysis.
The first scenario occurs when a singular zero appears in the first column of the Routh table. This situation creates a division by zero issues. To resolve this, a small positive or negative number, denoted as epsilon (∈), is substituted for the zero. The stability analysis proceeds by assuming a sign for ∈. If ∈ is positive, any sign change in the first...
373

You might also read

Related Articles

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

Sort by
Same author

Proxy failure in academia: More than just another example.

The Behavioral and brain sciences·2024
Same author

Exploring binding potential of two new indole alkaloids from <i>Nauclea officinalis</i> against third and fourth generation EGFR: druglikeness, <i>in silico</i> ADMET, docking, DFT, molecular dynamics simulation, and MMGBSA study.

Natural product research·2024
Same author

Tradition-invention dichotomy and optimization in the field of science.

The Behavioral and brain sciences·2022
Same author

Nectar Sugar Composition, Standing Nectar Crop and Floral Visitor Diversity of Three Endemic Plant Species from Western Ghats Biodiversity Hot-Spot of India.

Chemistry & biodiversity·2022
Same author

Phylogenetic diversity and activity screening of cultivable Actinobacteria isolated from marine sponges and associated environments from the western coast of India.

Access microbiology·2021
Same author

Evaluating alternative hypotheses to explain the downward trend in the indices of the COVID-19 pandemic death rate.

PeerJ·2021

Related Experiment Video

Updated: Aug 30, 2025

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

2.6K

The ratio versus difference optimization and its implications for optimality theory.

Sonali Shinde1, Ankur Patwardhan1, Milind Watve2

  • 1Annasaheb Kulkarni Department of Biodiversity, Abasaheb Garware College, Pune, 411004, India.

Evolution; International Journal of Organic Evolution
|August 27, 2022
PubMed
Summary
This summary is machine-generated.

This study clarifies when to use ratio versus difference optimization models in evolutionary ecology. Applying these models resolves long-standing debates in areas like parental investment and viral burst size.

Keywords:
Difference optimumoffspring quality-quantity trade-offoptimality theoryparental investmentpollinationratio optimum

More Related Videos

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
13:00

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

10.0K
The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
08:24

The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies

Published on: August 25, 2023

792

Related Experiment Videos

Last Updated: Aug 30, 2025

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments
08:12

A Psychophysics Paradigm for the Collection and Analysis of Similarity Judgments

Published on: March 1, 2022

2.6K
Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
13:00

Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

Published on: January 23, 2017

10.0K
The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
08:24

The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies

Published on: August 25, 2023

792

Area of Science:

  • Evolutionary Ecology
  • Behavioral Ecology
  • Optimization Theory

Background:

  • Classical optimization models include ratio-of-returns and difference-between-returns approaches.
  • The conditions determining the appropriateness of ratio versus difference optimization are not fully understood.
  • Existing theories suggest ratio optimum applies when investment capital is limited, and difference optimum when investment opportunities are limited.

Purpose of the Study:

  • To generalize and expand the principle distinguishing ratio and difference optimization.
  • To apply this principle across diverse evolutionary ecological problems.
  • To resolve existing debates and conundrums in evolutionary and behavioral studies.

Main Methods:

  • Development of a general framework for ratio-difference optimization.
  • Application of the framework to various evolutionary ecological scenarios.
  • Analysis of long-standing debates through the lens of the ratio-difference distinction.

Main Results:

  • Demonstration that the ratio-difference distinction provides a unified approach to optimization problems.
  • Successful application to diverse fields including parental investment, offspring trade-offs, nectar production, pollinator behavior, viral burst size, and protein handling.
  • Resolution of previously intractable problems in evolutionary and behavioral science.

Conclusions:

  • The ratio-difference optimization framework offers a powerful tool for understanding evolutionary and ecological strategies.
  • This distinction is crucial for resolving debates and advancing research in multiple scientific domains.
  • The study provides a unified perspective on optimization problems in biology and behavior.