Population Density Model
Class Name
Location in Objects Pane
 Model > Consequence > Social > Population Density Model
Model Description
Model Form
The population density is computed as the maximum yearly population density times three coefficients that respectively account for the reduction in the population based on the hour of the day, the day of the week, and the month of the year in which the earthquake occurs.
DDM sensitivities
Properties
Object Name
 Name of the object in Rtx
 Allowable characters are uppercase and lowercase letters, numbers, and underscore (“_”)
 The name is unique and casesensitive
Display Output
 Determines whether the model is allowed to print messages to the Output Pane
Time

Time of occurrence of the event
Maximum Population Density

Maximum yearly population density
Population Ratios Per Month
 A vector of 12 elements, each of which is a number between 0 and 1, showing the monthly change in the population
Population Ratios Per Weekday
 A vector of 7 elements, each of which is a number between 0 and 1, showing the daily change in the population during a week
Population Ratios Per Hour

A vector of 24 elements, each of which is a number between 0 and 1, showing the hourly change in the population during a day.
Output (Automatically generated generic response object)
 The population density at the time of earthquake occurrence
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