Related Experiment Video

Updated: Jul 6, 2026

Trajectory Data Analyses for Pedestrian Space-time Activity Study
16:14

Trajectory Data Analyses for Pedestrian Space-time Activity Study

Published on: February 25, 2013

Multi-sectoral urban growth in space and time: an empirical approach

A Kellerman, S Krakover

    Regional Studies
    |April 1, 1986
    PubMed

    Keywords:
    AmericasComparative StudiesDecentralizationDemographic FactorsDeveloped CountriesDeveloping CountriesEconomic DevelopmentEconomic FactorsGeographic FactorsIndustryMacroeconomic FactorsModels, TheoreticalMultiregional AnalysisNorth AmericaNorthern AmericaPennsylvaniaPopulationPopulation DynamicsPopulation GrowthResearch MethodologyResearch ReportSpatial DistributionTime FactorsUnited StatesUrban Spatial Distribution

    More Related Videos

    Monitoring Spatial Segregation in Surface Colonizing Microbial Populations07:40

    Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

    Published on: October 29, 2016

    Cities As Interfaces of Zoonotic Hazard Emergence: Development of the New York City Tick and Wildlife Urban Surveillance System10:17

    Cities As Interfaces of Zoonotic Hazard Emergence: Development of the New York City Tick and Wildlife Urban Surveillance System

    Published on: March 10, 2026

    Related Concept Videos

    Population Growth00:57

    Population Growth

    Population size is dynamic, increasing with birth rates and immigration, and decreasing with death rates and emigration. In ideal conditions with unlimited resources, populations can increase exponentially, which plots as a J-shaped growth rate curve of population size against time. This type of curve is characteristic of newly-introduced invasive species, or populations that have suffered catastrophic declines and are rebounding.However, realistic environmental conditions limit the number of...
    Cross-Sectional Research01:50

    Cross-Sectional Research

    In cross-sectional research, a researcher compares multiple segments of the population at the same time. If they were interested in people's dietary habits, the researcher might directly compare different groups of people by age. Instead of following a group of people for 20 years to see how their dietary habits changed from decade to decade, the researcher would study a group of 20-year-old individuals and compare them to a group of 30-year-old individuals and a group of 40-year-old...
    Mechanistic Models: Compartment Models in Individual and Population Analysis01:23

    Mechanistic Models: Compartment Models in Individual and Population Analysis

    Mechanistic models are utilized in individual analysis using single-source data, but imperfections arise due to data collection errors, preventing perfect prediction of observed data. The mathematical equation involves known values (Xi), observed concentrations (Ci), measurement errors (εi), model parameters (ϕj), and the related function (ƒi) for i number of values. Different least-squares metrics quantify differences between predicted and observed values. The ordinary least squares (OLS)...
    Levels of Use of a GIS01:29

    Levels of Use of a GIS

    Geographic Information Systems (GIS) operate across three levels of application, each representing an increasing degree of complexity: data management, analysis, and prediction. These levels reflect the expanding functionality and versatility of GIS technology in handling spatial data for diverse purposes.Data ManagementAt its foundational level, GIS serves as a tool for data management, enabling the input, storage, retrieval, and organization of spatial data. This level is often employed in...
    Growth Models with Integration: Problem Solving01:27

    Growth Models with Integration: Problem Solving

    In population modeling, integration provides a systematic way to determine accumulated quantities from known rates of change. One such application arises in ecology, where the total weight of a fish population in a body of water is referred to as its biomass. When the rate of growth of this biomass is known as a function of time, calculus can be used to determine the total biomass at a future date.Growth Rate and Biomass FunctionLet the growth rate of the fish population be represented by a...
    Real-World Applications of Space Curves01:29

    Real-World Applications of Space Curves

    Modern aerospace navigation depends on the accurate prediction of motion in three-dimensional space. In defense applications, radar systems continuously track both interceptors and moving aerial targets to find whether their flight paths will result in a collision. These motions are modeled mathematically as space curves, which represent paths that change continuously with time. Each object’s position is described by a vector function that specifies its location in terms of time-dependent...