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- Description:
- The staggered (or imbricated) lamellar ``brick-and-mortar" nanostructure of nacre endows nacre with strength and fracture toughness values exceeding by an order of magnitude those of the constituents, and inspires the advent of new robust biomimetic materials. While many deterministic studies clarified these advantageous features in the mean sense, a closed-form...
- Keyword:
- Nacre, Strength, Probability, Octet-truss, Architected Material, and Size Effect
- Subject:
- Mechanics, Mechanical engineering, and Civil engineering
- Creator:
- Luo, Wen
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15081 and etdadmin_upload_741756
-
- Description:
- In Chapter 1, I investigate whether physical capital anchors the spatial distribution of economic activity and how capital destruction affects local economic activity in the short and the long term. I investigate these questions by examining the 1975 frost that damaged coffee trees in the Brazilian state of Paraná. I...
- Keyword:
- Persistence, Agglomeration economies, Economic geography, Economic development, and Brazil
- Subject:
- Geography and Economics
- Creator:
- Barsanetti, Bruno
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15052 and etdadmin_upload_734725
-
- Description:
- The mammalian retina contains three classes of photoreceptors: rods, cones and the recently discovered intrinsically photosensitive retinal ganglion cells (ipRGCs). ipRGCs express the photopigment melanopsin and were initially thought to be a homogeneous population of cells that drive subconscious visual behaviors such as circadian photoentrainment and pupil constriction. However, recent...
- Subject:
- Neurosciences
- Creator:
- Sonoda, Takuma
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15030 and etdadmin_upload_724350
-
- Description:
- Thermoelectric modules that convert heat into electrical energy are attractive for improving global energy management. This thesis reports the synthesis and characterization of two new families of lead and tin chalcogenide alloys and focuses on the impact of the grain boundaries, phase segregation, and atomic vacancies on the electronic and...
- Keyword:
- Solid state chemistry, Thermoelectrics, Charge transport, Material science, and Thermal transport
- Subject:
- Inorganic chemistry and Chemistry
- Creator:
- Slade, Tyler John
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_740640 and http://dissertations.umi.com/northwestern:15071
-
- Description:
- Stimuli-responsive colloidal crystals with reconfigurable structures and properties have garnered significant interest in fields focused on the development of on-demand optics, adaptive catalysts, as well as chemical and biological sensors. A variety of different assembly techniques have been developed to engineer colloidal crystals. However, most reported structures are static as...
- Keyword:
- DNA, Colloidal crystals, and Stimuli-responsiveness
- Subject:
- Engineering
- Creator:
- Zhu, Jinghan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15066 and etdadmin_upload_739736
-
- Description:
- This study is a response to the observation that people articulate meanings of rules in flexible and context-specific ways, but that literature on international legal, norm-based, strategic-logical, and ethical/moral rules typically treats them as pregiven, stable objects. By examining people’s evolving justifications of practices related to firefighting (protecting against and...
- Keyword:
- incendiary munitions, conflagrations, rules, and rhetoric
- Subject:
- International relations and Political science
- Creator:
- Dijmarescu, Horia M.
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15055 and etdadmin_upload_736297
-
- Description:
- Over the last several decades, market-driven needs created a vast assortment of products with micron-sized features. To achieve the necessary levels of precision and accuracy, a synergistic approach was undertaken, where both material addition and subtraction was employed in the creation of the desired parts. However, currently employed micromanufacturing processes...
- Keyword:
- self-assembly, electrophoretically-guided micro additive manufacturing, electrophoretic deposition, dielectrophoresis, and process control
- Subject:
- Mechanical engineering
- Creator:
- Pritchet, David
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_720880 and http://dissertations.umi.com/northwestern:15023
-
- Description:
- This dissertation is a wide-range study of the relationships between the three central elements of the production function: technology, capital and its financing, and labor. Chapter 1 analyzes the relationship between labor and recent wave of automation and digitization technologies, showing that while they typically substitute for workers, in several...
- Keyword:
- flexibility, labor supply, household debt, capital structure, automation and digitization, and labor scarcity
- Subject:
- Economics, Finance, and Labor economics
- Creator:
- Zator, Michal
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_737737 and http://dissertations.umi.com/northwestern:15059
-
- Description:
- There has been significant growth in applying composite materials for various engineering applications in the past several decades. Composites allow engineers to tailor material microstructures and constituents for desired structural properties that usually outperform traditional engineering materials such as alloys. However, due to the heterogeneous nature of composites' microstructure, composite...
- Keyword:
- UD composite, woven composite, reduced order modeling, and structural performance prediction
- Subject:
- Engineering
- Creator:
- Gao, Jiaying
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15053 and etdadmin_upload_735144
-
- Description:
- Uterine leiomyoma (LM), the most common tumor of women, causes severe morbidity. LM cells can be separated into three molecularly and functionally distinct cell populations based on the expression pattern of CD34 and CD49b: stem (LSC, CD34+/CD49b+), intermediate (LIC, CD34+/CD49b-), and differentiated cells (LDC, CD34-/CD49b-). Progesterone via progesterone receptor (PR/PGR)...
- Keyword:
- RANK/RANKL pathway, Progesterone signaling, Tumor stem cell, DNA methylation, and Uterine leiomyoma
- Subject:
- Biology
- Creator:
- Liu, Shimeng
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15024 and etdadmin_upload_722143
-
- Description:
- This thesis explores questions in labor economics and applied microeconomics, with particular focus on issues that have implications for public policy. The first essay estimates the Frisch elasticity, sometimes known as the wage elasticity of labor supply in response to anticipated wage changes. Despite its importance in macroeconomic and public...
- Keyword:
- Public Economics, Applied Microeconomics, and Labor Economics
- Subject:
- Economics
- Creator:
- Ong, Pinchuan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_737671 and http://dissertations.umi.com/northwestern:15058
-
- Description:
- Over 6 million adults in the United States have heart failure, a serious public health problem. Differences in the progression of heart failure are in part due to variability in sex, age, and genetic variation background including ancestry. Medical biobanks provide a resource to study this variability as they include...
- Subject:
- Bioinformatics and Genetics
- Creator:
- Pottinger, Tess D
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_742461 and http://dissertations.umi.com/northwestern:15091
-
- Description:
- This dissertation presents research on the game theory of political power, both between and within nations. It first revisits a classical distinction between three different types of power or influence: information, rewards and threats. By presenting a binary-action Principal-Agent problem which incorporates the essential ingredients of all three types of...
- Keyword:
- Game Theory, Mechanism Design, and Political Economy
- Subject:
- Economics, Political science, and Economic theory
- Creator:
- Theisen, Alexander Scott
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_742509 and http://dissertations.umi.com/northwestern:15094
-
- Description:
- The advent of sequencing technologies has generated a large amount of biological and medical data. These data such as genetic sequencing data and lab experimental evidence data can help understand critical biomedical problems. This dissertation makes contribution in three different but related applications in biomedical research. In Chapter 2, we...
- Keyword:
- Normalization, Metagenomics, Graph neural network, Clustering, and Differential abundance test
- Subject:
- Biostatistics, Statistics, and Bioinformatics
- Creator:
- Ma, Yuanjing
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15057 and etdadmin_upload_736532
-
- Description:
- Natural products from fungi have had an immeasurable societal impact as both friends and foes to human health. This includes numerous therapeutics that have had widespread clinical success, mycotoxins that are implicated in fungal pathogenicity, and various agrochemicals. Recent genome sequencing efforts have revealed that fungal genomes contain the capacity...
- Subject:
- Biochemistry
- Creator:
- Robey, Matthew
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_731063 and http://dissertations.umi.com/northwestern:15039
-
- Description:
- This dissertation explores the interaction of debt covenants and firms’ investment behaviors, especially the association between debt covenants and project-level operations. Although previous research has examined the association between contractual terms or gross measures of investment and covenants, there is little known about the ways that covenants influence the choice...
- Subject:
- Accounting
- Creator:
- Rigsby, Christopher
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15083 and etdadmin_upload_741862
-
- Description:
- Interactions between working memory and long term memory systems are still not well understood, as the systems have long been thought to be mostly separate. An interesting intersection of these memory systems is domain-specific expertise, whereby individuals are able to show supra-span memory for information related to the area of...
- Keyword:
- Domain-specific expertise, Long term memory, Working memory, and Expertise
- Subject:
- Psychology and Neurosciences
- Creator:
- Gigler, Kathryn Lee
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_743356 and http://dissertations.umi.com/northwestern:15112
-
- Description:
- Atrial fibrillation (AF) is the most common cardiac arrhythmia, and associated with increased risk for ischemic stroke and mortality. While the risk of stroke has been shown to be reduced with the use of oral anticoagulants like Warfarin, these medications are predictably linked with an increased risk of bleeding, and...
- Keyword:
- Multidimensional imaging, Unicuspid aortic valves, Cardiac MRI, 4D flow MRI, Atrial fibrillation, and Magnetic Resonance Imaging
- Subject:
- Biomedical engineering, Medical imaging, and Engineering
- Creator:
- Ma, Liliana Esther
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_723481 and http://dissertations.umi.com/northwestern:15025
-
- Description:
- In machine learning, classification that assigns a label to a sample is a fundamental problem and serves a building block for various applications of artificial intelligence such as speech recognition, sentimental analysis, and image recognition. During the last years, deep learning rejuvenates artificial intelligence; in particular, it leads to tremendous...
- Keyword:
- Classification, Deep learning, and Machine learning
- Subject:
- Industrial engineering
- Creator:
- Koo, Jaehoon
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15036 and etdadmin_upload_729998
-
- Description:
- This dissertation investigates the relationship between melancholy and the development of American and Iranian literary discourses as responses to the crisis of postwar sovereignty. While situating itself against the complicated backdrop of US/Iran relations since the Second World War, it explores the impact of religion on the formation of political...
- Keyword:
- melancholy, paranoia, guilt, narration, Sovereignty, and politics
- Subject:
- Literature, Psychology, and Political science
- Creator:
- Mohammadi, Marjan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 01/21/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_731789 and http://dissertations.umi.com/northwestern:15044