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Work[remove]38

Resource type

Dissertation36
Conference Proceeding2

Creator

Fiske, Lionel David2
Karamchandani, Avinash Jagdish2
Brian Hsu1
Chen, Yuxin1
Christopher Lee1
more Creators »

Keyword

Machine Learning3
Computational Holography2
Computational Imaging2
Cultural Heritage Science2
Dynamical Systems2
more Keywords »

Subject

Applied mathematics[remove]38
Operations research4
Statistics4
Bioinformatics3
Computer science3
more Subjects »

Language

en36

Collection

Northwestern Undergraduate Research Journal1
Undergraduate Research and Arts Expo1

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Filtering by: Type Work Remove constraint Type: Work Subject Applied mathematics Remove constraint Subject: Applied mathematics

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Emergent Simplicity in Mathematical Models for Morphogenesis

Description:

The simplicity of morphogenesis, manifested as collective shape changes, emerges from complex biophysical regulations within a multicellular embryo. Constructing a spatio-temporal atlas of mechanical stresses is central for understanding the emergence of this simplicity. Developing a new mathematical theory for the static mechanics of three-dimensional multicellular aggregates involving pressures and...

Keyword:

Three-dimensional, Morphogenesis, Mathematical model, Ascidian gastrulation, and Force inference

Subject:

Applied mathematics

Creator:

Liu, Siqi

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

08/23/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_1012636 and http://dissertations.umi.com/northwestern:16728
Reduced Models for Noise-driven Limit-cycle Oscillators

Description:

Motivated by rhythms in the brain, we investigate the synchronization of noisy and all-to-all pulse-coupled oscillators. We consider a case where the oscillatory excursions are of varying amplitude and where only sufficiently large excursions result in the output pulses that drive the interactions between the oscillators. In the regime of...

Keyword:

Oscillators, Markov Renewal, Events, Mixed-mode, Spiking, and Noise

Subject:

Applied mathematics

Creator:

Karamchandani, Avinash Jagdish

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

05/31/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16397 and etdadmin_upload_959050
Methods for the Imaging, Analysis, and Display of Layered Media

Description:

This dissertation is a review of three projects I worked on during my time in the Computational Photography Lab at Northwestern University. First, a source separation problem for the X-Ray Fluorescence images of painted works of art is addressed through the incorporation of Hyperspectral Reflectance data. Following this, a discussion...

Keyword:

XRF, Computational Holography, Hypterspectral Imaging, Optical Coherence Tomorgraphy, Computational Imaging, and Cultural Heritage Science

Subject:

Applied mathematics

Creator:

Fiske, Lionel David

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

05/31/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_961685 and http://dissertations.umi.com/northwestern:16405
Reduced Models for Noise-driven Limit-cycle Oscillators

Description:

Motivated by rhythms in the brain, we investigate the synchronization of noisy and all-to-all pulse-coupled oscillators. We consider a case where the oscillatory excursions are of varying amplitude and where only sufficiently large excursions result in the output pulses that drive the interactions between the oscillators. In the regime of...

Keyword:

Oscillators, Markov Renewal, Events, Mixed-mode, Spiking, and Noise

Subject:

Applied mathematics

Creator:

Karamchandani, Avinash Jagdish

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

03/24/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16397 and etdadmin_upload_959050
Methods for the Imaging, Analysis, and Display of Layered Media

Description:

This dissertation is a review of three projects I worked on during my time in the Computational Photography Lab at Northwestern University. First, a source separation problem for the X-Ray Fluorescence images of painted works of art is addressed through the incorporation of Hyperspectral Reflectance data. Following this, a discussion...

Keyword:

XRF, Computational Holography, Hypterspectral Imaging, Optical Coherence Tomorgraphy, Computational Imaging, and Cultural Heritage Science

Subject:

Applied mathematics

Creator:

Fiske, Lionel David

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

03/24/2023

Date Created:

2023-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_961685 and http://dissertations.umi.com/northwestern:16405
Recurrent inhibition within olfactory networks shapes noise correlations and stimulus discrimination

Description:

Each second, living organisms take in sensory input from an ever-changing environment and respond appropriately. Identifying and contextualizing stimuli is critical for survival, and it often necessitates distinguishing between sensory experiences that are similar to each other. Pattern separation characterizes the mechanisms by which neuronal networks extract and highlight differences...

Keyword:

Sensory processing, Neuroscience, and Olfaction

Subject:

Applied mathematics

Creator:

Wang, Angelia Feiyang

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/16/2023

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_945895 and http://dissertations.umi.com/northwestern:16353
Dominance and Spatiotemporal Behavior in Cyclic Ecological Systems

Description:

Deterministic models are used to explain and predict the dynamics of ecosystems featuring cyclic competition schemes. The models are systems of reaction-diffusion partialdifferential equations that account for species mobility via Fickian diffusion and interspecies interactions according to the competition scheme. Length and temporal scales are chosen to be appropriate for...

Keyword:

cyclic ecosystems, nonlinear dynamics, rock-paper-scissors, traveling waves, exceptional species, and computational ecology

Subject:

Ecology and Applied mathematics

Creator:

Stiadle, Thomas Isaac

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/16/2023

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_946682 and http://dissertations.umi.com/northwestern:16361
Nonlinear Dynamical Models: Politics, Stochastics, and a Mexican Hat Dance

Description:

Dynamical modeling aims to capture the essential mechanics at work in real-world systems while remaining tractable enough to yield mathematical insights for predictions and interventions. The work presented here first takes this approach to the system of political ideology and influence, establishing a model for the continuous-time evolution of individual...

Keyword:

Sociophysics, Opinion Dynamics, Dynamical Systems, Stochastics, Modeling, and Coupled Particles

Subject:

Applied mathematics

Creator:

Sabin-Miller, David Webster

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

02/16/2023

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16340 and etdadmin_upload_944503
Distributed Optimization Methods In Large-Scale Systems With Realistic Constraints

Description:

Originally motivated by the emergence of networked systems lacking central coordination such as multiprocessors, wireless sensor networks and smart grids, the study of distributed optimization algorithms has been an active field of research spanning multiple decades. More recently, the rapid growth in the availability of high-dimensional datasets has posed the...

Keyword:

multi-agent systems, optimization, and distributed optimization

Subject:

Electrical engineering and Applied mathematics

Creator:

Iakovidou, Charikleia

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

09/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

http://dissertations.umi.com/northwestern:16228 and etdadmin_upload_927521
A Novel Parallel Adaptive Survivor Selection Framework for Large-Scale Simulation Optimization

Description:

For stochastic simulation optimization in a modern computing era, we introduce a new parallel framework for solving very large-scale problems using a ranking & selection (R&S) approach that simulates all systems or feasible solutions to provide a global statistical guarantee. We propose a parallel adaptive survivor selection (PASS) framework that...

Keyword:

master-worker, simulation, parallel, stochastic, large-scale, and optimization

Subject:

Applied mathematics, Statistics, and Operations research

Creator:

Pei, Linda

Owner:

Scholarly Digital Publishing

Language:

en

Date Uploaded:

06/22/2022

Date Created:

2022-01-01

Resource Type:

Dissertation

Alternate Identifier:

etdadmin_upload_903888 and http://dissertations.umi.com/northwestern:16108

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