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- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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
-
- 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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