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- Description:
- We establish the criterion for chaos in three-planet systems, for systems similar to those discovered by the Kepler spacecraft. Our main results are as follows: (i) The simplest criterion, which is based on overlapping mean motion resonances (MMRs), only agrees with numerical simulations at a very crude level. (ii) Much...
- Keyword:
- Warps, Protoplanetary Disks, Simulations, Chaos, Planets, and Dynamics
- Subject:
- Astronomy
- Creator:
- Rath, Jeremy
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16392 and etdadmin_upload_956915
-
- Description:
- A great deal of work has been done in recent years to construct algebraic invariants ofLegendrian knots, and their higher-dimensional analogues. Here we employ the diagram- matic calculus developed in [3], in order to develop an iterative method for computing the so-called vexillary functions of a class of Legendrian surfaces....
- Keyword:
- Moduli, Legendrian, Knot, Combinatorics, and Microlocal
- Subject:
- Mathematics
- Creator:
- Snadden, John Arthur
- 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:16484 and etdadmin_upload_980155
-
- Description:
- Autism spectrum disorder (ASD) and intellectual disability (ID) are two of the most highly prevalent neurodevelopmental disorders (NDDs), each affecting roughly 2% of the population. Despite the need for therapies, few exist due to a myriad of challenges, such as the complex underlying genetic etiology and historic inaccessibility of neural...
- Keyword:
- PACS1 syndrome, Induced pluripotent stem cells, Single-cell RNA sequencing, Intellectual disability, Cerebral organoids, and Autism spectrum disorder
- Subject:
- Molecular biology and Neurosciences
- Creator:
- Rylaarsdam, Lauren Elizabeth
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_984633 and http://dissertations.umi.com/northwestern:16538
-
- Description:
- The production and spread of digital news involves a wide range of actors: journalists and the organizations that employ them, social media platforms, audiences, and myriad commentators, citizen journalists, bloggers, and other actors who contribute to the news ecosystem without inhabiting an official role. These actors interact in flexible, often...
- Keyword:
- computational social science, algorithms, digital journalism, simulation, network analysis, and complexity
- Subject:
- Journalism, Computer science, and Communication
- Creator:
- Hagar, Nicholas
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_984386 and http://dissertations.umi.com/northwestern:16531
-
- Description:
- This dissertation presents an affect-centered approach to the analysis and interpretation of the experience of music and its attendant meaning in selected works of literature and cinema. Music’s interpretative mutability often charges it with meaning, though in infinite gradations of singularity rather than any universal sense. Rather than undertake a...
- Subject:
- French literature and Music
- Creator:
- Jackson, Colin
- 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:16432 and etdadmin_upload_965301
-
- Description:
- Vertebrate brains evolved to facilitate a diverse array of behaviors and internal cognitive processes. Theories of neural function have proposed that neural computation is organized within populations or ensembles of neurons. Here, we identify ensembles of neurons in the striatum, the main input nucleus of the basal ganglia, in which...
- Keyword:
- Wireless Optogenetics, Basal Ganglia, Striatum, Dopamine, Neural Ensemble, and Population Activity
- Subject:
- Neurosciences
- Creator:
- Minkowicz, Samuel
- 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:16515 and etdadmin_upload_983540
-
- Description:
- This dissertation studies three markets with regulated prices. I focus on how these regulations shape the behavior of firms along non-price dimensions. Chapter 1 studies the effects of community rating regulations in the US individual health insurance exchange market. In this market, the Affordable Care Act established community rating areas...
- Keyword:
- Industrial organization, Health economics, and Applied microeconomics
- Subject:
- Economics
- Creator:
- Geddes, Eilidh
- 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:16454 and etdadmin_upload_971770
-
- Description:
- The dissertation project considers the generative possibilities to envision Black subjectivity that emerges from a sustained consideration of different forms of difficult racial and sexual intimacies. The artists whose work is engaged throughout the project, Leasho Johnson, Ajamu X, and NIC Kay recognize that to be Black is to always...
- Keyword:
- Black Visual Culture, Gender and Sexuality Studies, Black Studies, Intimacy, Queer Studies, and Performance Studies
- Subject:
- African American studies
- Creator:
- Marsh, Gervais
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_987546 and http://dissertations.umi.com/northwestern:16619
-
- Description:
- Chapter 1. Caste, Bureaucracy, and the Limits to Political Affirmative Action. The aim of political affirmative action policies is to ensure that disadvantaged groups are represented in their governments and, in turn, that laws preferred by this group are more likely to be instituted. Often, however, they have not been...
- Keyword:
- citizenship, affirmative action, contagion, caste, bureaucracy, and political economy
- Subject:
- Economics
- Creator:
- Campillo Betancourt, Eduardo
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2023-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_986068 and http://dissertations.umi.com/northwestern:16575
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- Description:
- Human olfactory function is important for a myriad of behaviors, including food seeking, social cognition, memory, emotional regulation, and detecting environmental threats. In animal models, particularly dense olfactory inputs have been shown to target orbitofrontal cortex (OFC), a region involved in multimodal sensory integration, reward coding, and flexibly guiding our...
- Keyword:
- aging, tractography, olfaction, alzheimer's disease, orbitofrontal cortex, and diffusion magnetic resonance imaging
- Subject:
- Neurosciences
- Creator:
- Echevarria-Cooper, Shiloh Luela
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 05/31/2023
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16387 and etdadmin_upload_952134