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- 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
-
- Description:
- This multi-study dissertation explored technology and creativity within three different technology-rich creative musical spaces. Through the use of three contrasting empirical methods (qualitative content analysis, intrinsic case study, and phenomenology), I explored the complex ways technology and musical creativity are linked. In the first study, I completed a content analysis...
- Keyword:
- Creativity and Technology
- Subject:
- Music education
- Creator:
- Horton, Patrick William
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2022-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_926978 and http://dissertations.umi.com/northwestern:16217
-
- Description:
- Design problems are highly ill-structured, having “ambiguous specifications of goals, no determined solution path, and the need to integrate multiple knowledge domains” (Jonassen, 2000, p. 80). Design problems are generated by stakeholders to meet needs that exist outside of the classroom (Simon, 1973; Jonassen, 2000)—this is in contrast to most...
- Keyword:
- Iteration, Project-based Learning, Design, Design-based Research, and Coaching
- Subject:
- Education, Design, and Educational technology
- Creator:
- Rees Lewis, Daniel George
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14426 and etdadmin_upload_623161
-
- Description:
- This dissertation investigates processes controlling the Ca isotope geochemistry (δ44/40Ca) of Icelandic samples, from an atomic to island-wide scale. These studies embody the range of applications for which the Ca isotope proxy can apply in surficial environments, and I offer novel δ44/40Ca data for Icelandic rivers, rocks, minerals, soil, and...
- Keyword:
- chemical weathering, basalt , Calcium isotopes, carbon cycle, Iceland, and zeolites
- Subject:
- Geochemistry, Geology, and Environmental geology
- Creator:
- Nelson, Claire
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/02/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_848961 and http://dissertations.umi.com/northwestern:15786
-
- Description:
- Miniaturized lasers are important for fundamental studies of light-matter interactions and applications in on-chip photonic integration. Plasmonic nanoparticle lattices supporting surface lattice resonances can provide optical feedback for directional lasing emission at room temperature. This thesis focuses on how the design of plasmon cavities can enable engineering of laser emission...
- Keyword:
- Nanolasers, Colloidal quantum dots, Surface lattice resonances, Brillouin zone, Plasmons, and Nanophotonics
- Subject:
- Applied physics
- Creator:
- Guan, Jun
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 06/28/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15581 and etdadmin_upload_819603
-
- Description:
- Ionizing radiation is known for being dangerous at high doses, beneficial for diagnosis and treatment of diseases, and expensive for hazardous waste disposal and other protection policies governments put in place. Balancing the benefits and risks is key to maximizing public health, reducing public fears, and reducing extraneous costs that...
- Subject:
- Biology
- Creator:
- Zander, Alia
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/01/2021
- Date Created:
- 2020-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:15292 and etdadmin_upload_765069
-
- Description:
- Semiconductor nanowires, such as group IV and III-V nanowires, shows distinct electrical, optical and mechanical properties from their bulk counterparts due to their nanoscale size and 1-D morphology. For example, the quantum confinement effect modulates the band gap of a semiconductor nanowire when its diameter approaches or below the exciton...
- Keyword:
- atom-probe tomography, doping, nanowire, silicon, CVD, and strain
- Subject:
- Nanotechnology, Nanoscience, and Materials Science
- Creator:
- Sun, Zhiyuan
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:14424 and etdadmin_upload_622561
-
- Description:
- Theoretical investigation of photochemical processes in molecules is a nontrivial task. Ab initio calculations that completely describe such processes are often intractable to perform given today’s hardware. Thus, to gain insight into common areas of interest, such as in transition metal photochemistry and organic photovoltaics, less accurate but more feasible...
- Subject:
- Chemistry
- Creator:
- Kelley, Matthew
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 02/12/2020
- Date Created:
- 2018-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_631424 and http://dissertations.umi.com/northwestern:14486
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- Description:
- The demand for low cost, unconventional electronics requires new materials with unique characteristics that the traditionally used silicon-based technologies cannot provide. Metal oxide semiconductors, such has amorphous indium gallium zinc oxide (a-IGZO), have made impressive strides as alternatives to amorphous silicon for electronics applications. However, to achieve the full potential...
- Keyword:
- Combustion processing, Thin-film transistor, SANDs, and Metal Oxides
- Subject:
- Inorganic chemistry, Chemistry, and Materials Science
- Creator:
- Stallings, Katie Lynn
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 10/07/2021
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- etdadmin_upload_844267 and http://dissertations.umi.com/northwestern:15733
-
- Description:
- Before initiating a walking movement, the central nervous system forms a motor plan, a set of motor commands predicted to accomplish task-specific goals. To be effective, motor plans must be continually updated to consider an ever-changing external environment. Despite being an inherent part of walking, how the nervous system adapts...
- Keyword:
- Motor Learning, Adaptation, Gait, Uncertainty, Center of Mass, and Motor Control
- Subject:
- Physical therapy and Biomedical engineering
- Creator:
- Bucklin, Mary Ann
- Owner:
- Scholarly Digital Publishing
- Language:
- en
- Date Uploaded:
- 09/22/2022
- Date Created:
- 2021-01-01
- Resource Type:
- Dissertation
- Alternate Identifier:
- http://dissertations.umi.com/northwestern:16185 and etdadmin_upload_922879