Recent Posts

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51
AI use in Regional Simulation (BRAILS) / Re: Error in changing the number of #Images and seed
« Last post by bacetiner on January 17, 2024, 09:15:36 PM »
Thank you for using the SimCenter Forum!

The issue with setting the random seed and number of buildings in the BRAILS widget was addressed in R2D version 4.0.0. This new version of the R2D is currently only available on GitHub, but the installation media should be out soon.

On another note, I am able to run this query using the BRAILS backend just okay. If you are familiar with Python programming, I may be able to help you get this inventory using the BRAILS backend. The backend has several additional options that, in some instances, allow for better inventory generation. For example, for your region, by changing the source of the footprints, I am able to get an inventory of 1695 buildings (instead of 119 buildings as obtained from OpenStreetMaps).

Please let me know how I can assist you better!

52
Regional Hazard Simulation (R2D, rWhale) / earthquake hazard scenarios
« Last post by jvishnu on January 17, 2024, 07:52:13 PM »
What techniques are used to generate earthquake hazard scenarios?
53
AI use in Regional Simulation (BRAILS) / Error in changing the number of #Images and seed
« Last post by M.R on January 17, 2024, 01:53:09 PM »
Hello, I have a problem with running the Brails.
when I want to run the Brails for more than 10 buildings this error is shown.
 (There was an error in the python process python module, the exit code is 1 ),  #Images and seed should remain just equal to 10. The code is attached in a txt file. The Version of R2D is 3.1.2
Thank you
54
Regional Hazard Simulation (R2D, rWhale) / Uncertainty in earthquake scenario simulation
« Last post by jvishnu on January 16, 2024, 08:40:44 PM »
How is uncertainty considered in earthquake scenario simulation in R2D?
55
Regional Hazard Simulation (R2D, rWhale) / Re: Incomplete building information
« Last post by jvishnu on January 16, 2024, 07:52:48 PM »
Thank you very much for your reply. It is very helpful. What is the minimum building information needed to use R2D?
56
Regional Hazard Simulation (R2D, rWhale) / Re: Incomplete building information
« Last post by jyzhao on January 16, 2024, 06:40:51 PM »
Yes, it is possible to select MOD as None and use user-provided fragility.

However, the "IMasEDP" option, instead of "None", should be selected in ANA. Otherwise, R2D will not link the intensity measures to the provided fragility curves.

Regards,

Jinyan
57
Regional Hazard Simulation (R2D, rWhale) / Re: Earthquake rupture forecast
« Last post by jyzhao on January 16, 2024, 06:36:29 PM »
Hello,

This is the maximum distance from the site "centroid" to the source.

Please note the site "centroid" is roughly estimated by taking the average value of the latitude and longitude values of all sites. It is not the geometry centroid of the sites.

Hope this helps.

Jinyan
58
Regional Hazard Simulation (R2D, rWhale) / Re: R2D extent of the region
« Last post by jyzhao on January 16, 2024, 06:34:28 PM »
Hello,

This depends on the complexity of the analysis/assessment you would like to perform. If you plan to perform a Hazus-style assessment, where a structural analysis model is not needed, and damage and loss are obtained directly from fragility curves, you should be able to assess a state using a very powerful personal computer or DesignSafe's High-performance Computer (HPC) provided through R2D. The biggest challenge here might be preparing and managing big inventory data and hazard information data for such a region. This requires very large memory and storage space.

If you plan to perform structural analysis models in your assessment, you might need more powerful computers. You might be able to require more computational resources from DesignSafe if you are eligible for DesignSafe's criteria. If you have your own HPC resources, you could also contact us, and we could help set up R2D's backend applications on your HPC. Please let us know more specifics of your plan so we can better assist you.

Regards,

Jinyan
59
Regional Hazard Simulation (R2D, rWhale) / Incomplete building information
« Last post by jvishnu on January 16, 2024, 06:32:13 AM »
What if there is no complete information about buildings but we only have fragility curves can we still use the R2D to get damage and loss results?
can we choose MOD and ANA as none and DL as user-provided fragility?
60
Regional Hazard Simulation (R2D, rWhale) / Earthquake rupture forecast
« Last post by jvishnu on January 16, 2024, 04:17:39 AM »
In HAZ, Earthquake scenario, Earthquake rupture forecast, what is the maximum distance?
Is it the maximum distance from the site centroid to the source or site boundary to the source?
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