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Public Health Emergency Preparedness

This resource was part of AHRQ's Public Health Emergency Preparedness (PHEP) program, which was discontinued on June 30, 2011, in a realignment of Federal efforts.

This information is for reference purposes only. It was current when produced and may now be outdated. Archive material is no longer maintained, and some links may not work. Persons with disabilities having difficulty accessing this information should contact us at: https://info.ahrq.gov. Let us know the nature of the problem, the Web address of what you want, and your contact information.

Please go to www.ahrq.gov for current information.

4. Reference

Home Page Commands

The Home Page is displayed by clicking Home on any of the model Web pages. On the Home Page you can:

  • Click New Scenario to load an empty scenario onto Scenario Input page.
  • Click Open Saved Scenario to select a previously saved scenario and load the scenario onto the Scenario Input page.
  • Click Help to display the User Manual.

Open Saved Scenario Page Commands

The Open Saved Scenario page is displayed by clicking Open Saved Scenario on any of the model Web pages. On the Open Saved Scenario page you can:

  • Click Home to display the home page.
  • Click New Scenario to load an empty scenario onto the Scenario Input page.
  • Click Open Saved Scenario to select a previously saved scenario and load the scenario onto the Scenario Input page.
  • Click Help to display the user manual.
  • Click Browse. to select a previously saved scenario.
  • Click Open to load the scenario that was selected by clicking Browse. and display it on the Scenario Input Page.

Scenario Input Page Commands

The Scenario Input Page is displayed by clicking the New Scenario, Open Saved Scenario, or Modify Scenario button. On the Scenario Input Page you can:

  • Click Home to display the home page.
  • Click New Scenario to load an empty scenario onto Scenario Input page.
  • Click Open Saved Scenario to select a previously saved scenario and load the scenario onto the Scenario Input page.
  • Click Help to display the user manual.
  • Click Save Scenario to save the data entered on the Scenario Input Page into an XML file, which can later be redisplayed on the Scenario Input Page by clicking Open Saved Scenario.
  • Click Run Scenario to run the Mass Evacuation Transportation Model with the inputs that are currently displayed on the Scenario Input Page.

Scenario Results Commands

The Scenario Results Page shows the estimated time to complete the evacuation specified on the Scenario Input Page. On the Scenario Input Page you can:

  • Click Home to display the home page.
  • Click New Scenario to load an empty scenario onto Scenario Input page.
  • Click Open Saved Scenario to select a previously saved scenario and load the scenario onto the Scenario Input page.
  • Click Help to display the user manual.
  • Click Save Scenario to save the data entered on the Scenario Input Page into an XML file, which can later be redisplayed on the Scenario Input Page by clicking Open Saved Scenario.
  • Click Modify Scenario to reload the current scenario onto the Scenario Input Page and, if desired, modify one or more data elements and rerun the model.

XML Schema for Input Files

When you save a scenario, all the data on the Scenario Input Page are saved to an XML file, which can later be loaded into the model by clicking "Open Saved Scenario." In this section, the structure of the XML file is explained. You do not need to understand this structure in order to run the model. However, by understanding the structure you can enter the data needed to run the model in a spreadsheet, save the file as an XML file, and then import the XML file into the model (via the Open Saved Scenario command). The alternative is to enter these data directly into the model. Using the XML approach may be useful if you have a long list of hospitals you want in the model and you can easily assemble the required data for each hospital (i.e., patient mix, capacity, occupancy rate, and location) in electronic form in some other application.

Sample Input File

The screen shot in Exhibit 3 shows an illustrative scenario. When the Save Scenario button is clicked, the XML file shown in Exhibit 4 is produced. Inspection of the XML file enables you to easily go tothe relationship between the data elements on the Scenario Input Page and the XML file.

Exhibit 3: Illustrative Scenario

Exhibit 3: Illustrative Scenario. A screen shot of an illustrative scenario input page shows sample input on vehicle fleet information for the scenario, geographic area, information about the evacuating and receiving facilities, and traffic congestion.

Exhibit 4: XML File Created When the Scenario in Exhibit 3 Is Saved

<?xml version="1.0" encoding="utf-8" ?> 
- <scenario xmlns="http://massevacmodel.ahrq.gov/scenario" scenarioName="Enter Scenario Name Here"
trafficCongestionFactor="1" minutesToOverflowFacility="150" overflowLatitude="10.0" 
overflowLongitude="20.0" surgeCapacity="0.15" msaFipsCode="0040">
- <vehicles>
  <alsAmbulance vehicleType="ALS Ambulance" numAvailable="10" capacity="1" loadMinutes="20" /> 
  <blsAmbulance vehicleType="BLS Ambulance" numAvailable="10" capacity="1" loadMinutes="15" /> 
  <wheelchairVan vehicleType="Wheelchair Van" numAvailable="40" capacity="6" loadMinutes="5" /> 
  <bus vehicleType="Bus" numAvailable="100" capacity="30" loadMinutes="1" /> 
  </vehicles>
- <facilities>
  <facility facilityName="Facility 1" status="evacuating" patientMixBus="20"
patientMixWheelchairVan="30" patientMixBlsAmbulance="30" patientMixAlsAmbulance="20" 
capacity="500" occupancyRate="100" latitude="43.0" longitude="-70.0" /> 
  <facility facilityName="Facility 2" status="receiving" patientMixBus="20" 
patientMixWheelchairVan="30" patientMixBlsAmbulance="30" patientMixAlsAmbulance="20" 
  capacity="500" occupancyRate="100" latitude="43.1" longitude="-70.1" /> 
  </facilities>
  </scenario>
  

With a spreadsheet that supports XML, you can open the saved XML file, enter the input data for the model directly into the spreadsheet, save the spreadsheet as an XML file, and then open the file in the model. The steps for doing this are:

  • Click the Save Scenario button to create an XML file, such as the one shown above in Exhibit 4.
  • Open the XML file within a spreadsheet that supports XML.
  • Display the schema of the XML file.
  • Map elements of the schema onto the spreadsheet (for example, Exhibit 5).
  • Enter (or paste from another application) the model input data on to the spreadsheet.
  • Save the spreadsheet as an XML file.
  • Click Open Saved Scenario in the model and browse to the saved XML file.

Exhibit 5: Illustration of How XML Schema Elements Are Mapped onto a Spreadsheet

Exhibit 5. Illustration of how XML schema elements are mapped onto a spreadsheet. Column A of the spreadsheet calls for the user to enter the scenario name, traffic congestion, the minutes to overflow facility, overflow facility's longitude and latitude, and overflow facility's surge capacity to be entered in column B.  It also ask for vehicle information on Buses, wheel chair vans, BLS ambulances, ALS ambulances. This information, which includes type, capacity, load time, and number available, is to be entered in columns B, C, D, and E.  Finally, Column A asks for Facility Name with the following information in columns B through the right side of the spread sheet: status and patient mix for each type of vehicle; capacity, occupancy rate, latitude and longitude.

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The information on this page is archived and provided for reference purposes only.

 

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