Digital Commons Network^™

A Hybrid Artificial Intelligence Model For Detecting Keratoconus, Zaid Abdi Alkareem Alyasseri, Ali H. Al-Timemy, Ammar Kamal Abasi, Alexandru Lavric, Husam Jasim Mohammed, Hidenori Takahashi, Jose Arthur Milhomens Filho, Mauro Campos, Rossen M. Hazarbassanov, Siamak Yousefi

Machine Learning Faculty Publications

Machine learning models have recently provided great promise in diagnosis of several ophthalmic disorders, including keratoconus (KCN). Keratoconus, a noninflammatory ectatic corneal disorder characterized by progressive cornea thinning, is challenging to detect as signs may be subtle. Several machine learning models have been proposed to detect KCN, however most of the models are supervised and thus require large well-annotated data. This paper proposes a new unsupervised model to detect KCN, based on adapted flower pollination algorithm (FPA) and the k-means algorithm. We will evaluate the proposed models using corneal data collected from 5430 eyes at different stages of KCN severity …

Commencement [Program], December 17, 2022, University Of Northern Iowa

UNI Commencement Programs

The program of the commencement ceremonies, including a list of institutional leadership, a list of the departments by college, awards given at the ceremonies, and a list of undergraduate and graduate degree candidates. This commencement program is not an official graduate list.

Do Emotional Support Animals Actually Help?, Harold Herzog

Herzog - Companion Animal Issues

U.S. federal law allows people with mental-health disorders to have emotional support animals in college dorms and no-pet apartments. This legislation assumes there are proven benefits of of living with emotional support animals. There is no substantial research that supports the use of emotional support animals in public housing or for air travel.

Amaryllis & Belladonna, Office Of Arts + Cultural Programming, Peak Performances At Montclair State University

2022-2023 Artists Invoke the Powers of Community as They Bring Audiences Into Fiery, Mysterious, Illuminating Visions of Our World

Amaryllis & Belladonna are two new, modular, and interlocking projects by Brooklyn-based guitarist, composer, and MacArthur fellow Mary Halvorson. Amaryllis is a sextet that filters Halvorson’s compositional explorations of melody, harmony, and counterpoint through the lens of six master improvisers, arranged in a way that allows the music to unfold differently every time. Belladonna is a set of compositions written specifically for Halvorson on guitar plus The Mivos Quartet. Highlighting Halvorson’s compositional voice in a fresh context, the music is augmented by Halvorson’s guitar throughout, adding elements of chance and improvisation. Halvorson says, “Amaryllis features some of my favorite musicians …

Improving Elementary Nutrition Education Curriculum In San Francisco - A Program Analysis Of The Food Education Project, Audrey N. Chang

Master's Projects and Capstones

Childhood obesity and food insecurity are problems within San Francisco, California. The purpose of this program analysis is to assess the Food Education Project (FEP), which is one of many projects addressing nutrition education and the long-term public health impact is to solve the problems of food insecurity and childhood obesity. Through primary data collection, students shared their honest feelings about food and were able to openly discuss what they know and do not know about food. A literature review was conducted through research from various databases from the University of San Francisco to identify not only current interventions but …

Problems And Suggestions To Improve Pronunciation Skills Of English Language Learners In China, Yi Fang

Master's Projects and Capstones

This project is based on the input hypothesis theoretical framework. The literature review explores the importance of pronunciation in English communication, problems with pronunciation and what causes them will be talked about for people learning English. Lastly, since the goal of this field project is to help English language learners in China improve their pronunciation, the third theme is about how to solve pronunciation problems and what learners need. One of the conclusions is that Chinese language learners' performance in the English language is significantly influenced by motivation, attitudes, parental support, openness to communication, and other linguistic and nonlinguistic factors. …

Towards Robust Channel Dynamics: Photoionization In Nitrogen And Air, Justin K. Smith

Electrical and Computer Engineering ETDs

In present photoionization models used in computational studies, there is a lack of experimental data and several assumptions pertaining to photo-electron production in the gas. It is widely accepted that wavelengths between 98 nm and 102.5 nm are the primary contributors to photoionization of oxygen in an air plasma. In air, the collisional kinetics of nitrogen provide the photons, which results in the ionization of oxygen. Photoionization rate measurements from a low current corona discharge in synthetic air mixtures are reported to provide new empirical data. In addition, this provides a method to estimate the scaling parameter w/a. Concurrently, vacuum …

Roles Of Individual Protein In De Novo Polycomb Protein Recruitment, Piao Ye

Biological Sciences Theses and Dissertations

Polycomb Group (PcG) proteins are evolutionarily conserved epigenetic transcriptional regulators that maintain the transcriptional repression of silenced genes by maintaining heritable chromatin states. PcG proteins first discovered as repressors of Hox genes in Drosophila, later were shown to regulate a wide range of genes. In mammals, PcG proteins are involved in maintaining pluripotent state of stem cells and controlling cell differentiation. Misexpression of PcG protein leads to cancers like lymphoma and melanoma. PcG proteins maintain rather than initiate transcriptional repression, once PcG – mediated repression is established it can be maintained through an unlimited number of cycles. Most studies of …

Hysterical, Xochiyollotl Harbison

Art

Hysterical is an exhibition consisting of 11 ceramic sculptures, five paintings, and four digital prints. The work in this show dissects my interactions and experiences with womanhood, femininity, fatness, gender and sexuality. Working within three main themes, I attempt to find my place within those constructs; the first being my relationship with my body and my existence within that body in relation to the rest of the world, the exploitation of and oppression of women and feminine presenting people economically, politically, and socially, and lastly, the onus of violence and the idea of protection. Using familiar imagery as metaphor, I …

A Horn Microstrip Transmission Line For The Characterization And Investigation Of Multipactor At Various Pressure And Power, Shaho Hamadamin

Electrical and Computer Engineering ETDs

The University of New Mexico is designing, building, and testing a multipactor testbed based on a horn-microstrip transmission line to characterize and investigate the multipactor effect for a range of vacuum pressures and power. A horn-shaped, 50 Ω Al microstrip line is positioned inside a six-way cross stainless-steel chamber that is vacuumed down to low ~10−7 torr. A 100 𝑀𝑀𝑀𝑀𝑀𝑀 sine signal is fed to a rf amplifier with a bandwidth of 250 − 105 𝑀𝑀𝑀𝑀𝑀𝑀, that can reach 120𝑊𝑊 average (CW) power. Two multipacting detection methods, i.e., global, and local methods, are implemented for accurate multipaction detection. The former …

Protection And Control Of Electric Power Grid Under High Penetration Of Ders, Binod Prasad Poudel

Electrical and Computer Engineering ETDs

Modernizing power grids with communication-based technologies has introduced new challenges to the operation of the grid, especially when the communication network experiences failure or data is corrupted during the transfer. This issue is studied in this dissertation from the control and protection perspective. First, the cyber attack detection and mitigation of distributed control of microgrids is addressed when the distributed energy resources (DER) are exposed to false data injection attacks. A cyber-threat detection technique is proposed based on Kullback-Liebler divergence-based criterion. This criterion with a threshold can detect the misbehavior of a compromised DER control unit and, consequently, calculates the …

Stories, Elizabeth Stuart Phelps, Roxanne Harde , Editor

Zea E-Books Collection

Today, Elizabeth Stuart Phelps (1844–1911) is best known for a handful of her novels: The Gates Ajar (1868), The Silent Partner (1871), and The Story of Avis (1877). During her life, however, the short story was a hugely popular genre in which she was fully invested and where she made a good deal of her living. Stories were her earliest and latest publications, and they were work that she both enjoyed and employed to greater ends. From 1864 to her death in 1911, she published almost one hundred and fifty short stories in the leading periodicals of the day. This …

Towards Multipronged On-Chip Memory And Data Protection From Verification To Design And Test, Senwen Kan, Jennifer Dworak

Computer Science and Engineering Theses and Dissertations

Modern System on Chips (SoCs) generally include embedded memories, and these memories may be vulnerable to malicious attacks such as hardware trojan horses (HTHs), test access port exploitation, and malicious software. This dissertation contributes verification as well as design obfuscation solutions aimed at design level detection of memory HTH circuits as well as obfuscation to prevent HTH triggering for embedded memory during functional operation. For malicious attack vectors stemming from test/debug interfaces, this dissertation presents novel solutions that enhance design verification and securitization of an IJTAG based test access interface. Such solutions can enhance SoC protection by preventing memory test …

Compact Formulation Of Multicommodity Network Flows With Applications To The Backhaul Profit Maximization Problem And Fixed Charge Network Flow Problem, Yulan Bai

Operations Research and Engineering Management Theses and Dissertations

The triples formulation is a compact formulation of multicommodity network flow problems that provides a different representation of flow than the traditional and widely used node-arc and arc-path approaches. In the literature, the triples formulation has been applied successfully to the maximum concurrent flow problem and to a network optimization problem with piecewise linear convex costs. This dissertation applies the triples formulation to the backhaul profit maximization problem (BPMP) and the fixed charge network flow problem (FCNF). It is shown that the triples representation of multicommodity flow significantly reduces the number of variables and constraints in the mixed integer programming …

Leveraging Crowdsourced Navigation Data In Roadway Pluvial Flash Flood Prediction, Arefeh Safaei-Moghadam

Civil and Environmental Engineering Theses and Dissertations

This dissertation develops and tests a new data-driven framework for short-term roadway pluvial flash flood (PFF) risk estimation at the scale of road segments using crowdsourced navigation data and a simplified physics-based PFF model. Pluvial flash flooding (PFF) is defined as localized floods caused by an overwhelmed natural or engineered drainage system. This study develops a data curation and computational framework for data collection, preprocessing, and modeling to estimate the risk of PFF at road-segment scales. A hybrid approach is also developed that couples a statistical model and a simplified physics-based simulation model in a machine learning (ML) model to …

Experimental And Numerical Studies On Laser Hot Wire Cladding By A High-Power Direct Diode Laser, Mingpu Yao

Mechanical Engineering Research Theses and Dissertations

Laser hot wire cladding is an advanced surface modification technology. It has been extensively growing during the last decades due to its high deposition rate, good metallurgical bonding between the substrate and clad layer, low dilution ratio, and small heat-affected zone. There are many kinds of lasers widely used in the laser cladding process. The high-power direct diode laser is widely welcomed because of its high energy efficiency, high electro-optic conversion efficiency, low cost, and high reliability. A rectangular-shaped direct diode laser beam combined with hot wire feeding can achieve a lower dilution depth with a uniform fusion line compared …

Accuracy, Precision, And Efficiency: Comparing Mapping Techniques In Nixtun-Ch’Ich’, Petén, Guatemala, Gabriela Zygadlo

Theses and Dissertations

New archaeological survey technologies have transformed the way in which sites are mapped. Nixtun-Ch’ich’ in Petén, Guatemala has been surveyed in a variety of ways including a theodolite with an electronic distance measurement (EDM), total station (TS), laser imaging, detection and ranging (LiDAR), and photogrammetry. This paper aims to compare various mapping techniques and their accuracy, precision, and efficiency when pertaining specifically to mapping in Nixtun-Ch’ich’, Petén, Guatemala. The goal is to evaluate which technique is most efficient when mapping in the site by considering the variables of cost, time, and environment of the site. The paper also considers the …

New York City Lacks The Resources To Keep Cyclists Happy (Or Safe) But Help Is On The Way, Richard Heaton

Capstones

Across New York City, the disparity in bike resources has been on the rise, leaving many New Yorkers without access to dedicated bike lanes or other resources. This is especially prevalent in the outer boroughs, but thankfully there are organizations that look to remedy this in the future.

https://richard-heaton.medium.com/new-york-city-lacks-the-resources-to-keep-cyclists-happy-or-safe-but-help-is-on-the-way-15235462f199

December 17, 2022, Seattle University School Of Law

Commencement Programs

No abstract provided.

Potential Benefits Of The Campus Outdoor Built Environment On Student Stress, Leading To Improved Retention, Kevin Dilliard

Graduate Liberal Studies Theses and Dissertations

University landscape managers often ask themselves, are they making a difference? Since what they do is not a revenue-generating department, how can they validate their true worth beyond making the campus beautiful, which is excellent, but what added value do they bring? As is common practice, when economic times get tough, the landscape department budget is one of the first to be cut, but is that the wisest thing to do? This research was intended to explore the concept that the services landscape managers provide have a return on investment by providing an environment in which students can thrive and …

Regression Modeling Of Complex Survival Data Based On Pseudo-Observations, Rong Rong

Statistical Science Theses and Dissertations

The restricted mean survival time (RMST) is a clinically meaningful summary measure in studies with survival outcomes. Statistical methods have been developed for regression analysis of RMST to investigate impacts of covariates on RMST, which is a useful alternative to the Cox regression analysis. However, existing methods for regression modeling of RMST are not applicable to left-truncated right-censored data that arise frequently in prevalent cohort studies, for which the sampling bias due to left truncation and informative censoring induced by the prevalent sampling scheme must be properly addressed. Meanwhile, statistical methods have been developed for regression modeling of the cumulative …

Understanding Your Cultural Identities: A Self-Study Of The Impact Of One’S Cultural Identities On Interpreting Interactions, Shelby L.W. Sammartino

Education Doctorate Dissertations

There is a disproportionality of students of color receiving office referrals for disrespect and defiance because disrespect and defiance are subjective in interpretation by teachers in the classroom. This self-study aims for the researcher to identify and understand the construction of their cultural identities, so they can determine how their cultural identities impact their interpretation of interactions with students concerning disrespect and defiance, how their cultural identities impact their choice of behavior management technique in interactions concerning disrespect and defiance, and how their cultural identities impact their discipline decisions in interactions concerning disrespect and defiance. The data to determine the …

Cultivating Lifelong Readers: A Study Of How English Teachers Can Bring Pleasure Back Into The Reading Lives Of Students, Kaylie Jo Schertzing

Masters Projects

Research has revealed that many of today’s students are not reading for pleasure. Although research shows that recreational reading is linked with academic success, educational policies have left reading for pleasure out of focus and instead emphasize a particular type of reading that is assessed on mandated tests. As a result of curriculum reforms, English Language Arts curriculum has been narrowed and left reading for pleasure out of focus. This project explores the history of curriculum reform in the United States as it relates to the teaching of English Language Arts as well as recent research surrounding how recreational reading …

Detecting Transient Events With Genetic Algorithms, Dylan G. Palmieri

Computer Science

Accurately detecting and analyzing events in a power system is a difficult, but important task. This project aims to determine whether genetic algorithms are viable - in terms of both accuracy and efficiency - for detecting these events in large sets of power systems data. Although power systems events are intially classified using a trigger-based system at the time of the event, this project aims to show that power systems can be broken down into their component parts (lineto-line voltage, current, etc.) and analyzed in isolation after the fact with similar accuracy. The system attempts to achieve this goal by …

Architects Of Abundance: Indigenous Regenerative Food And Land Management Systems And The Excavation Of Hidden History, Lyla June Johnston

Indigenous Studies

Pre-Columbian and contemporary Indigenous Nations of North and South America (hereafter referred to as Turtle Island and Abya Yala) have managed ecosystems extensively to produce prolific and predictable food systems for themselves and non-humans, whom they often view as relatives. The elements of earth, water, fire, and air are explored to analyze Indigenous soil management, Indigenous aquaculture, Indigenous pyrogenic land management, and Indigenous oral histories, respectively. First, a review of four Indigenous societies and their soil management techniques revealed that none of these systems require outside fertilizer or irrigation to sustain ecocentric food systems on millennial scales. Second, a comparative …

I'M A Killer Whale: The Process Of Cultural Identity Development From The Perspectives Of Young Indigenous Children, Angela Lunda

Indigenous Studies

This qualitative single case study examined the phenomenon of cultural identity development from the perspective of young Indigenous children situated within the context of their southeast Alaskan community. Decades of assimilationist policies have eroded cultural identity among many Indigenous Alaskans, yet a strong cultural identity is known to be a protective factor for Indigenous peoples. Building on Indigenous identity development theory, the study sought to answer the research questions: (1) How do young children demonstrate their cultural identity through interactions on the Land? (2) How do community organizations support cultural identity development (CID) in young Indigenous children? (3) What role …

A Wiggle Around A Giant: Exploring The Hot Electrons Within The Io Torus, Drew Coffin

Physics

Jupiter exhibits a fundamental rotational periodicity known as System IV that has no widely-accepted explanation, yet is easily observed in ultraviolet emission from the plasma torus generated by the innermost Galilean moon Io. This periodicity around Jupiter maps to a persistent, radially independent subcorotation within the Io plasma torus. In this thesis, we explore the origin and consequences of this periodicity. Using an equatorial chemistry and diffusive transport model, we demonstrate that a prescribed hot electron population produces a coherent wave of heightened energy flow that induces a consistent subcorotation. This additional hot electron population is consistent with the energization …

Controllability Of Non-Self-Adjoint Systems Of Partial Differential Equations, Jeff Park

Mathematics and Statistics

In this dissertation, we first consider the problem of exact controllability of a system of N one-dimensional coupled wave equations when the control is exerted on a part of the boundary by means of one control. We provide a Kalman condition (necessary and sufficient) and give a description of the attainable set. The second problem we consider is the inverse problem for the vector Schrödinger equation on the interval with a non-self-adjoint matrix potential. In doing so, we prove controllability of the system and develop a method to recover spectral data from the system. Then, we solve the inverse problem …

Using A Stakeholder-Engaged, Iterative, And Systematic Approach To Adapting Collaborative Decision Skills Training For Implementation In Va Psychosocial Rehabilitation And Recovery Centers, Emily B. H. Treichler, Robert Mercado, David Oakes, Dimitri Perivoliotis, Yuliana Gallegos‑Rodriguez, Elijah Sosa, Erin Cisneros, William D. Spaulding, Eric Granholm, Gregory A. Light, Borsika Rabin5,6

Department of Psychology: Faculty Publications

Background: Adaptation of interventions is inevitable during translation to new populations or settings. Systematic approach to adaptation can ensure that fidelity to core functions of the intervention are preserved while optimizing implementation feasibility and effectiveness for the local context. In this study, we used an iterative, mixed methods, and stakeholder-engaged process to systematically adapt Collaborative Decision Skills Training for Veterans with psychosis currently participating in VA Psychosocial Rehabilitation and Recovery Centers.

Methods: A modified approach to Intervention Mapping (IM-Adapt) guided the adaptation process. An Adaptation Resource Team of five Veterans, two VA clinicians, and four researchers was formed. …

Formation And Interrogation Of A Modeling Excel Database For Sorbent Preconcentrate With Gc/Ms, Lisa Caravello

Chemical and Biological Engineering ETDs

Volatile organic compounds (VOCs) are of great interest and the subject of much research, as they can be used in various applications. Preconcentrating this class of analytes is necessary as they can be elusive with simple sampling techniques. VOCs are often captured using sorbents in thermal desorption tubes as preconcentrates prior to analysis, commonly gas chromatography mass spectroscopy (GCMS). There are gaps in knowledge in behavior of materials used as sorbents i.e., if they will retain an analyte of interest appropriately. In this research I seek to eliminate speculation and unknown variables of analyte and sorbent combinations by creating a …