Modular design of multiscale models, with an application to the innate immune response to fungal respiratory pathogens

What is being modeled?
The early phases of the immune response to respiratory fungal infections with a focus on the role of iron metabolism
Description & purpose of resource

When completed, the model will have a web-based user interface that allows immunologists and other researchers to interact with the model, gain insights into the early stages of the infection and test potential alternative, host centric interventions.

Spatial scales
molecular
cellular
tissue
organ
whole organism
Temporal scales
1 - 103 s
hours
days
This resource is currently
under early-stage development
Has this resource been validated?
No
Collaborators
Reinhard Laubenbacher
PI contact information
laubenbacher@uchc.edu
Keywords
MSM U01
Respiratory Infections
Fungal infections
Modular design
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Between-brain-area functional influence from simultaneous population recordings

What is being modeled?
Our tool seeks to infer the influence of the dynamics of one brain area on another
Description & purpose of resource

Neural representations of for instance task-relevant information are often distributed across multiple brain areas. These representations could have independent dynamics, or could influence each other. Our tool uses latent dynamical system models to assess the degree of influence of dynamics in one brain area on another by correlating the sub-single trial fluctuations of brain areas.

Spatial scales
cellular
Temporal scales
10-3 - 1 s
1 - 103 s
This resource is currently
under early-stage development
likely to be usable without detailed knowledge of its internals
Has this resource been validated?
No
Can this resource be associated with other resources? (e.g.: modular models, linked tools and platforms)
No
Keywords
BRAIN TMM
neuronal networks
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Multi-fidelity surrogate models for skin growth

What is being modeled?
Skin growth during tissue expansion
Description & purpose of resource

Tissue growth and remodeling (G&R) has been modeled in a continuum mechanics framework with an approach similar to plasticity named 'finite growth model'. Computationally, G&R has been simulated with custom finite element implementations. However, these computational implementations are computationally expensive and require an expert modeler to setup for any new set of parameters, boundary or initial conditions. Thus, current models capture the overall trends of G&R in different applications but are difficult to calibrate, cannot be evaluated easily, and ignore mechanical and biological uncertainty. To address these limitations, we leverage machine learning tools to replace the finite element simulations with an inexpensive surrogate with quantified epistemic uncertainty. Specifically, we look at skin growth during tissue expansion and propose a multi-fidelity Gaussian process surrogate to replace the finite element solver. The methodology can be extended to other applications of G&R. We have published one article and the code is available through Bitbucket (link below).

Spatial scales
tissue
Temporal scales
days
This resource is currently
mature and useful in ongoing research
Has this resource been validated?
No
Can this resource be associated with other resources? (e.g.: modular models, linked tools and platforms)
No
Key publications (e.g. describing or using resource)

Lee, Taeksang, Ilias Bilionis, and Adrian Buganza Tepole. "Propagation of uncertainty in the mechanical and biological response of growing tissues using multi-fidelity Gaussian process regression." Computer Methods in Applied Mechanics and Engineering 359 (2020): 112724.

Collaborators
Adrian Buganza Tepole
PI contact information
Purdue University
Keywords
R01
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