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

Selected Data About Geographic Locations01:25

Selected Data About Geographic Locations

Geographic Information Systems (GIS) rely on two core types of data: spatial data and attribute data.Spatial DataSpatial data defines the physical location of features within a coordinate system, typically expressed in terms of latitude and longitude. It provides precise positioning for elements like roads, rivers, or buildings.Attribute DataAttribute data complements spatial data by adding descriptive information about these features. For example, a road's spatial data includes its start and...
Cell Size01:22

Cell Size

Cell sizes vary widely among and within organisms. Bacterial cells range between 1-10 micrometers (μm)and are considerably smaller than most eukaryotic cells. The smallest bacteria are 0.1 μm in diameter—about a thousand times smaller than eukaryotic cells, which typically range from 10-100 μm.
Surface Area
Cells can take in nutrients and water via diffusion through the plasma membrane itself or through specific channels in the membrane. The area of the membrane surrounding the cells limits the...
Size and Structure of Viral Genomes01:26

Size and Structure of Viral Genomes

Viral genomes exhibit remarkable diversity in size, structure, and composition, influencing their replication strategies and interactions with host cells. These genomes consist of either DNA or RNA and may be linear or circular. Additionally, they can be single-stranded or double-stranded, with each configuration affecting how the virus propagates within a host. RNA viruses, for instance, generally have smaller genomes than DNA viruses, a factor that contributes to their high mutation rates and...
Neuron Structure01:30

Neuron Structure

Neurons are the main type of cell in the nervous system that generate and transmit electrochemical signals. They primarily communicate with each other using neurotransmitters at specific junctions called synapses. Neurons come in many shapes that often relate to their function, but most share three main structures: an axon and dendrites that extend out from a cell body.
Structure and Function of Neurons
The neuronal cell body—the soma— houses the nucleus and organelles vital to cellular...
Neuron Structure01:31

Neuron Structure

Overview
Ionic Crystal Structures02:42

Ionic Crystal Structures

Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...

You might also read

Related Articles

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

Sort by
Same author

The internal and external cost of motor vehicle crashes.

Scientific reports·2025
Same author

Choosing to drive from alcohol serving establishments (ASEs).

Traffic injury prevention·2024
Same author

The racial composition of road users, traffic citations, and police stops.

Proceedings of the National Academy of Sciences of the United States of America·2024
Same author

Scheduling optimisation of alcohol test sites.

Scientific reports·2024
Same author

The angiogenic growth of cities.

Journal of the Royal Society, Interface·2024
Same author

Improving access to extracorporeal membrane oxygenation for out of hospital cardiac arrest: pre-hospital ECPR and alternate delivery strategies.

Scandinavian journal of trauma, resuscitation and emergency medicine·2022

Related Experiment Video

Updated: May 25, 2026

Modeling the Functional Network for Spatial Navigation in the Human Brain
05:55

Modeling the Functional Network for Spatial Navigation in the Human Brain

Published on: October 13, 2023

Network structure and city size.

David Levinson1

  • 1Department of Civil Engineering, University of Minnesota, Minneapolis, Minnesota, United States of America. dlevinson@umn.edu

Plos One
|January 19, 2012
PubMed
Summary
This summary is machine-generated.

Larger cities have more interconnected transportation networks. Better job accessibility and network connectivity significantly reduce commute times and car usage in major US metropolitan areas.

Related Experiment Videos

Last Updated: May 25, 2026

Modeling the Functional Network for Spatial Navigation in the Human Brain
05:55

Modeling the Functional Network for Spatial Navigation in the Human Brain

Published on: October 13, 2023

Area of Science:

  • Urban planning
  • Transportation engineering
  • Network science

Background:

  • City network structures vary significantly.
  • Understanding these variations is key to improving urban performance.
  • Transportation networks influence city functionality and resident experience.

Purpose of the Study:

  • To systematically compare surface transportation network structures across the 50 largest US metropolitan areas.
  • To identify scaling parameters relating city size to network structure.
  • To analyze the impact of network structure and job accessibility on commute times and auto mode share.

Main Methods:

  • Comparison of network structure variables (connectivity, hierarchy, circuity, treeness, entropy, accessibility).
  • Analysis of scaling parameters for network size and structure relative to city size.
  • Measurement and ranking of job accessibility across metropolitan areas.
  • Statistical analysis of commute time and auto mode share based on accessibility and network metrics.

Main Results:

  • Larger cities exhibit greater physical interconnectedness.
  • A 1% increase in job accessibility reduces commute times by approximately 90 seconds each way.
  • Improved network connectivity and treeness correlate with reduced commute times and lower auto mode share.

Conclusions:

  • Urban network structure is a critical factor in city performance.
  • Job accessibility and network design significantly impact commute efficiency and transportation choices.
  • Network and accessibility metrics are vital tools for urban planning and evaluating infrastructure investments.