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Number of items: 5
Date joined: Oct 30 2023

Charles Nicholson's Work

#1

SIR Model for Epidemic Disease with Vaccination and Culling

This is a simple SIR model for a rapid-growth animal population that includes initial vaccination an ... Read more
This is a simple SIR model for a rapid-growth animal population that includes initial vaccination and culling once an epidemic has begun.
sim108 runs
Economics Health
#2

Tanzania Dairy Investment Model

This is a model that allows assessment of investments in Tanzania's dairy sector from 2024 to 2030
sim1318 runs
Business Technology Economics
#3

WCCI Supply Chain Assessment Model

Assesses supply chain management decisions for a cheese converting company
sim2002 runs
Business Economics
#4

Test Model

Just a test
sim2 runs
Economics
#5

Dairy Farm Financial Impacts of HPAI Infection

This is a tool that allows dairy farms to estimate the reduction in Income Over Feed Cost (IOFC) res ... Read more
This is a tool that allows dairy farms to estimate the reduction in Income Over Feed Cost (IOFC) resulting from a infection with Highly Pathogenic Avian Influenza (HPAI).
sim62 runs
Economics
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Uploading a Bundle from Zip

Instead of creating bundles, categories, and assemblies one by one, you can upload a single zip file that contains all of your bundle's content. To create your zipped bundle, make a folder with your bundle's name and add subfolders with your categories' names. The folder tree should have the same structure that you want the categories to have in your bundle. Place your assembly .stmx files in the appropriate category folders, then zip your bundle folder and upload it using the Upload Bundle from Zip link above.

Assemblies, Bundles, and Categories

Assemblies are self contained models that demonstrate common ways to connect together building blocks and that can be used as parts of other models. This is analogous to using prefabricated wall and roof pieces to construct a house.

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Models are mathematical representations of how elements in a system are connected and interact (e.g., ecosystems, organizations, supply chains). When running models on the isee Exchange™, results can be viewed in output devices like graphs and tables.

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Causal Loop Diagram (CLD)

A map that represents the feedback structure of a system.

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CLDs are high-level maps that represents the feedback structure of a system and easily communicate the essence of a model. They appear in the isee Exchange™ when authors upload them from the Stella desktop software or create them with Stella Online™.