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

Thermodynamics: Chemical Potential and Activity01:10

Thermodynamics: Chemical Potential and Activity

1.7K
The effective concentration of a species in a solution can be expressed precisely in terms of its activity. Activity considers the effect of electrolytes present in the vicinity of the species of interest and depends on the ionic strength of the solution. The activity of a species is expressed as the product of molar concentration and the activity coefficient of the species.
The thermodynamic equilibrium constant is more accurately defined in terms of activity rather than concentration.
1.7K
Sexually Transmitted Infections01:26

Sexually Transmitted Infections

1.1K
Sexually transmitted infections (STIs) are diseases transmitted primarily through unsafe sexual interactions. Bacteria, viruses, or parasites cause them and can result in severe health complications if untreated.ChlamydiaThe bacterium Chlamydia trachomatis is responsible for the disease Chlamydia, the most common STI in the United States. This peculiar pathogen requires human cells to reproduce, residing intracellularly. The initial infection often goes unnoticed because it typically does not...
1.1K
Male Sexual Response: Erection & Ejaculation01:17

Male Sexual Response: Erection & Ejaculation

21.1K
Sexual stimulation can take various forms, such as physical touch and visual or auditory cues. When this happens, the parasympathetic reflex in the sacral portion of the spinal cord is activated. This reflex stimulates the release of nitric oxide (NO), which then dilates the arterioles in the penis, increasing blood flow to the erectile tissues - the corpora cavernosa and corpus spongiosum.
The blood filling the erectile tissues compresses the veins, which helps to prevent blood from leaving...
21.1K
Development of the Sexual Organs in the Embryo and Fetus01:15

Development of the Sexual Organs in the Embryo and Fetus

3.8K
Development of the reproductive organs in an embryo starts from a bipotential state. This means the early embryo can develop either male or female reproductive organs. The formation of these organs begins with the growth of gonadal ridges that arise from the intermediate mesoderm during the fifth week of development.
Near the gonadal ridges, two duct systems are present: the mesonephric ducts (Wolffian ducts) and paramesonephric ducts (Müllerian ducts). These ducts form the basis for the...
3.8K
Drug Distribution: Volume of Distribution01:25

Drug Distribution: Volume of Distribution

7.5K
The volume of distribution refers to the theoretical volume necessary to contain the entire amount of an administered drug at the same concentration observed in the blood plasma. The body's intracellular fluid compartment, which makes up two-thirds of the total body water, is contrasted with the extracellular fluid compartment—comprising plasma and interstitial fluid—that accounts for one-third. The volume of distribution can vary depending on the characteristics of the drug.
7.5K
Potential Energy00:52

Potential Energy

42.7K
The energy stored by a structure and location of matter in space is called potential energy. For instance, raising a kettlebell changes its spatial location and increases its potential energy. Similarly, a stretched rubber band contains potential energy which, under certain conditions, can be converted into other forms of energy, such as kinetic energy.
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
42.7K

You might also read

Related Articles

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

Sort by
Same author

Social influence on women's contraceptive use: Population-based, sociocentric network study in rural Uganda.

Social science & medicine (1982)·2026
Same author

Sociodemographic characteristics predict land use patterns by farmers near a protected area in Madagascar.

Scientific reports·2026
Same author

Hidden Structure of Care Coordination in Heart Failure Care Transitions: A Mixed-Method Network Analysis of Clinical Notes.

Journal of cardiac failure·2026
Same author

Spreading potential in disease relevant networks: Predicting centralities in rural Northeast Madagascar.

PLOS global public health·2026
Same author

Identifying Social-Epidemiological Roles Associated with Viral Exposure Using Regular Equivalence Blockmodeling.

medRxiv : the preprint server for health sciences·2025
Same author

Gaps in Effective HIV Pre-exposure Prophylaxis Screening and Uptake Among Fishermen in Kenya.

AIDS and behavior·2025

Related Experiment Video

Updated: Feb 9, 2026

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

587

Epidemic potential by sexual activity distributions.

James Moody1, Jimi Adams2, Martina Morris3

  • 1Department of Sociology, Duke University, Durham, NC, USA and Department of Sociology, King Abdulaziz University, Jedda, Saudi Arabia.

Network Science (Cambridge University Press)
|February 17, 2018
PubMed
Summary

Network structure impacts disease spread. Interventions must consider how changes in connectivity volume and shape influence disease transmission, as altering high-degree nodes may unexpectedly increase spread.

Keywords:
cohesionconnectivitydegree distributionsdynamic network diffusionsexually transmitted infectionssimulation

More Related Videos

Assessment of Sexual Behavior of Male Mice
04:38

Assessment of Sexual Behavior of Male Mice

Published on: March 5, 2020

21.9K
Microscopy of Fission Yeast Sexual Lifecycle
07:47

Microscopy of Fission Yeast Sexual Lifecycle

Published on: March 9, 2016

15.2K

Related Experiment Videos

Last Updated: Feb 9, 2026

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus
05:34

Sexual Crosses with the Mucoromycete Phycomyces blakesleeanus

Published on: June 6, 2025

587
Assessment of Sexual Behavior of Male Mice
04:38

Assessment of Sexual Behavior of Male Mice

Published on: March 5, 2020

21.9K
Microscopy of Fission Yeast Sexual Lifecycle
07:47

Microscopy of Fission Yeast Sexual Lifecycle

Published on: March 9, 2016

15.2K

Area of Science:

  • Epidemiology
  • Network Science
  • Mathematical Biology

Background:

  • Sexually transmitted infections (STIs) like HIV require transmission pathways within populations.
  • Network connectivity, influenced by degree distribution, is crucial for disease propagation.
  • Understanding the degree distribution's role is key to predicting and controlling STI spread.

Purpose of the Study:

  • To investigate how mean degree (volume) and upper tail skewness (shape) of degree distributions affect network connectivity.
  • To analyze the interaction between volume and shape in determining network properties relevant to disease transmission.
  • To examine the phase transition to giant components and its dependence on distribution features.

Main Methods:

  • Utilized simulation methods to model network connectivity.
  • Analyzed the impact of varying mean degree and upper tail skewness on network structure.
  • Quantified the relationship between distribution features and the emergence of giant components.

Main Results:

  • A significant interaction was observed between the shape and volume of degree distributions.
  • Low mean degree favored connectivity in long-tailed distributions, while high mean degree favored short-tailed distributions.
  • The phase transition to giant components was positively related to mean degree, with short-tailed distributions showing a sharper and more extensive transition.

Conclusions:

  • Network interventions must consider both the volume and shape of degree distributions to avoid unintended consequences.
  • Policies targeting high-degree nodes may inadvertently increase connectivity and disease spread if they redistribute connections to lower-degree actors.
  • Tailoring interventions to specific distribution characteristics is essential for effective STI control.