Digital Commons Network^™

Material Witnesses: Deconstructing Networks Of Credibility And Objectivity In Medical Narratives From Mary Toft To The Contraceptive Pill, Krista Elizabeth Roberts

Theses and Dissertations

In this dissertation, I argue that to better understand the tangled, embedded human and nonhuman subjects and how their testimonies function in western medical history, we need to first understand their erasure. By using relationality as a reading method, I break apart who and with whom individuals make medical decisions by considering what constitutes evidence. In the Mary Toft case, expert witnessing informs the ways in which a reader trusts what the narrator claims. The medicolegal conventions of courtroom testimony shape the ways in which medical men wrote their pamphlets. These men shore up their credibility through descriptions of nonhuman …

The Politics Of Di/Visibility: Narrative Positioning And Disability Representation In Children’S Literature, Agathe Lancrenon

Theses and Dissertations

Disabled individuals are the largest minority group in the United States and Disability scholarship is intricately connected to lived experiences and advocacy, but it too often remains overlooked even in conversations that intend to bring to light historically underrepresented groups. This dissertation provides an analysis of a broad range of children’s literature and its role in constructing literal and ideological images of disability. It offers a critical analysis of visuality in the following children’s texts: Wonder by R.J. Palacio, El Deafo by Cece Bell, Miss Little’s Gift by Douglas Wood, Thank You, Mr Falker by Patricia Polacco, A Boy and …

Evaluating The Multi-Level Community Effects Of Root Hemiparasites In Northern Illinois, Anna Marie Scheidel

Theses and Dissertations

Root hemiparasites are green plants that tap into a neighboring plant’s water-filled xylem to acquire inorganic nutrients, which can lead to an accumulation of nutrients in hemiparasite biomass. I performed an observational field study at Nachusa Grasslands and Franklin Creek State Natural Area (Lee County, IL) in 2019 to investigate how the presence of five root hemiparasites (Aureolaria grandiflora (Benth.) Pennell, Agalinis tenuifolia (Vahl) Raf., Castilleja sessiliflora (Pursh), Dasistoma macrophylla (Nutt.) Raf., Pedicularis canadensis L.) affects their communities through the (a)keystone species hypothesis, that hemiparasites will increase measures of diversity by altering competition among surrounding plant species, (b) ecological engineer …

Metallic Superhydrophobic Surfaces Engineered By A Hot Water Treatment Process For Bioinspired Atmospheric Water Generation Applications, Laylan Bapper Hassan

Theses and Dissertations

Atmospheric water generation, which involves condensing water vapor in humid ambient air on a solid surface, offers an attractive solution to water-deficiency problems such as the need for drinking water in developing countries, deserts, remote areas like mountain tops, or for producing agricultural water under drought conditions. Selection of materials for the condensation surface faces two opposing challenges. Specifically, when a film-like condensation forms on a hydrophilic surface, it covers the solid surface and hinders further condensation. On the other hand, the use of a hydrophobic surface reduces the nucleation rate of condensation and therefore reduces the water collection efficiency. …

Womanist Ways In A Man's World: Unpacking Anti-Blackness In Higher Education Enrollment Management Roles, Mesha C Garner

Theses and Dissertations

This study evaluated the phenomenon of anti-Black womanism in enrollment management at Historically White Institutions (HWIs) for Black women professionals. The qualitative study was conducted to understand dialectical functions of enrollment management and the dialectical responsibilities that Black women have while working in enrollment management. The theoretical framework of anti-Black womanism guided this study. Anti-Black womanism is a dual lens of BlackCrit (Dei, 2017; Dumas and Ross, 2016) and Womanism (Phillips, 2006). Furthermore, this study comprised the historical perspective and acknowledged the settler-colonial complex to best conceptualize the perceptions of Black people, particularly Black women. This study included 10 participants, …

Personalized Learning Path Generation Based On Genetic Algorithms, Lumbardh Elshani

Theses and Dissertations

A substantial disadvantage of traditional learning is that all students follow the same curriculum sequence, but not all of them have the same background of knowledge, the same preferences, the same learning goals, and the same needs. Traditional teaching resources, such as textbooks, in most cases orient students to follow fixed sequences during the learning process, thus impairing their performance. Curriculum sequencing is an important research issue for learning process because no fixed learning paths will be appropriate for all learners. For this reason, many research papers are focused on the development of mechanisms to offer personalization on learning sequences, …

Auditimi I Elementeve Të Sigurisë Rrugore Në Autostradën “Arbën Xhaferi”, Lekë Krasniqi

Theses and Dissertations

Ky hulumtim ka të bëjë me auditimin e sigurisë së elementeve të rrugës pas përfundimit të punimeve ndërtimore të Autostradës “Arbën Xhaferi”, ndërtimi i së cilës ka nisur në vitin 2015, me gjatësi 65km nga kryeqyteti i Republikës së Kosovës - Prishtina në drejtim të kryeqytetit të Maqedonisë Veriore - Shkupit, inaugurimi i së cilës është bërë në muajin maj të vitit 2019.

Teza e masterit përshkruan konceptin e Auditimit të elementeve të sigurisë rrugore në autostradën “Arbën Xhaferi” i cili është bërë para se të bëhet hapja, në mënyrë që të bëhet auditimi i të gjitha elementeve të sigurisë …

Model Based Systems Engineering Demonstrator For Air Worthiness With Performance Data Of Department Of Defense Rotorcraft, Bretton M. Bethel

Theses and Dissertations

Airworthiness is a process of certifying that an aircraft can be safety operated within specified bounds. This process is essential to ensuring the safety of the aircraft, its personnel, and the surrounding assets. A Model-Based Systems Engineering (MBSE) approach can be utilized as a method to improve the airworthiness process. MBSE is the methodology of creating and utilizing domain models as a means of exchanging and presenting information for a wide variety of disciplines to understand and replacing previous document-based exchange. The objective of this research is to develop a reference architecture with a MBSE approach to perform the airworthiness …

Contract Information Extraction Using Machine Learning, Zachary E. Butcher

Theses and Dissertations

The Air Force Sustainment Center assisted by the Data Analytics Resource Team and the Defense Logistics Agency collected four million contracts onto one of the Air Force Research Laboratory’s high power computers. This thesis focuses on the effort to determine if parts are available through those contracts. Some information is extracted using machine learning in combination with natural language processing. Where machine learning methods are unsuccessful or inappropriate, text mining techniques, such as pattern recognition and rules, are used. Upon completion, the information is combined into a Gantt chart for quick evaluation. Only 21% of the contracts have their information …

Static Fatigue Of Hi-Nicalon™ S Ceramic Fiber Tows At 600°C In Air And Silicic Acid-Saturated Steam, Caleigh M. Nelson

Theses and Dissertations

Ceramic matrix composites (CMCs) have the potential to be utilized in applications such as hypersonic vehicles, aircraft leading edges, hot sections of engines, and rocket nozzles. Of particular interest are advanced SiC/SiC composites that can withstand the elevated temperatures and harsh oxidizing environments while maintaining their properties and structural integrity under an applied load. Steam, a major component of combustion environment, is one such aggressive oxidizing environment. As steam passes through the SiC/SiC composite, entering the composite interior through the cracks in the SiC matrix, it becomes saturated with silicic acid, Si(OH)₄. Before incorporating SiC/SiC composites in the …

Hybridized Spacecraft Attitude Control Via Reinforcement Learning Using Control Moment Gyroscope Arrays, Cecily C. Agu

Theses and Dissertations

Machine learning techniques in the form of reinforcement learning (RL) can solve complex nonlinear problems found within spacecraft attitude determination and control systems (ADCS). Three CMG arrays were implemented in two simulated spacecraft environments using a reinforcement learning controller. The performance of the controllers were evaluated using target profiles from traditional control law implementations, singularity measure, and variable initial state values. The current research demonstrates that while RL techniques can be implemented, further exploration is needed to investigate the operational efficacy of an approach for producing comparable performance attributes with respect to traditional control laws.

Cyclic Pursuit, Daniel E. Oke

Theses and Dissertations

This thesis analyzes cyclic pursuit with the intent of developing swarm attack strategies for autonomous agents. Research was focused on finding the effects of pursuers capture range, evader speed and size of formation on the probability of escape. The temporal evolution of several polygonal formations was analyzed. The polygons could be regular or arbitrary polygons. The thesis demonstrated that an increased capture range, formation size, reduced evader speed aided capture probability. Irregular n-gon formations reduced to n-1 gon repeatedly, pursuer clusters formed until two clusters remained which eventually came together, so all the n pursuers coalesced until convergence. Regular n-gon …

Fluid Dynamics Modeling For Per- And Polyfluoroalkyl Substances Removal In Legacy Fire Suppression Systems, Jacob G. Spaulding

Theses and Dissertations

Legacy per- and polyfluoroalkyl substances (PFASs) exist in the form of aqueous film-forming foams within hangar fire suppression systems throughout the country, posing a threat to both surrounding environments as well as local populations. The United States (US) Department of Defense (DoD), in conjunction with the US Environmental Protection Agency (EPA), is investigating best practices to flush out existing contaminants prior to disposal and replacement with a less environmentally harmful replacement. While current procedures dictate a triple rinse of the entire system to yield contaminant levels acceptable to the DoD, the practice has never truly been tested. Designed as a …

An Examination Of Civilian Retention In The United States Air Force, William F. Wilson

Theses and Dissertations

The backbone of the United States Air Force is undoubtedly the large civilian workforce that supplements the great work that is accomplished. Many research studies have been conducted on officer and enlisted personnel to ensure that the career fields are properly developed and managed to meet the ever growing demands of the military's varied missions, but no recent studies have focused on the civilian workforce. Striking a balance between new and experienced employees is paramount to success given the ever-changing economic and political landscapes where we find ourselves. The first part of the research uses logistic regression to determine the …

Evaluation Of Efficient Water Reuse Technologies For Sustainable Forward Operating Bases, Kelsie L. Crouch

Theses and Dissertations

A secure water source is essential to the resiliency and readiness of military installations and contingency operation locations, especially those located in the dry climates the US military operates in today. There are multiple issues of concern when identifying water sources, such as security, cleanliness, accessibility, and sustainability. Water resources pose a potential vulnerability to mission readiness in a remote, agile environment, such as a forward operating base (FOB). Having a secure water resource helps facilitate mission readiness in the contingency environment, offering the opportunity to be more resilient and cost-effective. Current water treatment technologies present the possibility to perform …

Examining Military Cargo Pilots' Eco-Friendly Flying Intention, Ioan A. Gaitan

Theses and Dissertations

The US Air Force is the largest operational energy consumer within the Department of Defense primarily due to aviation fuel use. Military pilots can play important roles in saving aviation fuel by flying aircraft in an eco-friendly manner. According to the theory of planned behavior (TPB), intention is the major predictor of behavior. This study tests two models based on TPB for understanding cargo pilots’ eco-friendly intentions when they conduct channel or logistics missions. The study found that attitude, subjective norm, and perceived behavior control were significant antecedents to intention in a multiple regression with aggregated scales.

An Analysis Of Application Type, Super Domain, And Productivity In Software Intensive Defense Acquisition, Evan P. Amato

Theses and Dissertations

The productivity of software developers has been an area of interest in the private industry in an endeavor to more appropriately interpret pertinent software development cost drivers. In an effort to better predict the cost of developing software, many have focused on Application Type as an important factor. The Department of Defense (DoD) has recently adopted a similar focus. Studies on categorization schemes of Application Types have shown increasingly relevant cost and productivity driving characteristics recently in the DoD. Identification of factors associated with distinct productivity effects is important for the defense acquisition and software cost estimation domains. Distinct factors …

Spatiotemporal Analysis Of Variability In Soil Volumetric Water Content And Spatial Statistical Methods For Management Zone Delineation For Variable Rate Irrigation, Isak Lars Larsen

Theses and Dissertations

Irrigated agriculture is the largest user of freshwater in a world experiencing increased water scarcity and water demands. Variable rate irrigation (VRI) aims to use water efficiently in crop production, resulting in good yields and water conservation. With VRI, the grower is able to employ custom irrigation rates for different parts of a field. Adoption of VRI has been limited due to the complexity of matching irrigation to spatiotemporal crop water needs and the cost/benefit economics of VRI equipment. The goal of this study was to quantify spatiotemporal variability of VWC in a field that has uniform soil type and …

The Reemergence Of Eradicated Disease Due To Ecological Impact Of Climate Change, Claudia Kolakowski

Theses and Dissertations

Global warming is radically changing aspects of the Earth. As scientists continue to research the effects, the ramifications of melting permafrost is coming to light. We build off of a previously existing Anthrax model in the hopes to include climate change as a factor in Anthrax spread. Chapter II develops a simplified version of an Anthrax model. Parameters for the model are found by using previous research and eigenvalues are analyzed in order to find thresholds and equilibria. Chapter III consider the general solutions of the model through eigenvalues and eigenvectors. This model is then extended to include a parameter …

Physiological Consequences Of Neuromodulation And The Cellular Properties That Underlie Them, Margaret Louise Demaegd

Theses and Dissertations

Neuronal activity is a product of more than the underlying neuronal connections. Modulatory influences like changes in the animal’s environment, the animals physiological state, or the release of neuromodulators can dramatically alter neuronal activity. Modulatory influences can be beneficial for the animal because they are a source of neuronal and behavioral plasticity, and they can provide neuronal circuits with the robustness needed to continue to function in new conditions, states, or tasks.However, malfunctions of the modulatory system can disrupt neuronal activity and lead to pathologies. Predicting how modulatory influences will alter neuronal activity is challenging because the underlying cellular and …

Planting Defamation In Arkansas: A Legal Historical Analysis Of The Development Of Defamation Laws In Arkansas During The 19th Century, Jessica Michelle Beel

Theses and Dissertations

This thesis analyzes the early defamation laws in Arkansas by the constitutions of Arkansas, the laws of Arkansas from 1812 to 1874, and Arkansas case law from 1812 to 1874 as concerning defamation, libel, and slander. This research shows how defamation, libel, and slander developed in Arkansas from early territorial periods to the end of the Reconstruction period. These laws were the foundations and the precedent for today’s defamation statutory and case laws in Arkansas, without these laws, it may be argued that defamation in Arkansas would have been decades behind the American legal system. This research advocates for the …

Reimagining Move: Revolutionary Black Humanism And The 1985 Bombing, Joseph E. Cranston

Theses and Dissertations

This thesis examines the extremist group, MOVE and its founder Vincent Leaphart (a.k.a John Africa) in the context of Revolutionary Black humanism, rather than simply a footnote in the tragic events of May 13, 1985. it explores MOVE's predecessors in the Black Panther movement, including The Black Panther Party and how these organizations and individuals might have influenced MOVE and their aims. In addition, ample examination is given to the role that systemic police brutality and racism, specifically within the Philadelphia Police department and city government played in the decisions that MOVE made as they attempted to create a community …

Establishing A Mechanistic Link Between Disturbed Flow And Aneurysm Formation In A 3d Cerebral Bifurcation Model, Nesrine Bouhrira

Theses and Dissertations

The effect of disturbed flow profiles on the endothelium have been studied extensively in systemic vasculature, but less is known about the response of the blood-brain barrier (BBB) to these flow regimes. Here we investigate the effect of steady and pulsatile disturbed flow on the integrity of the BBB using a three-dimensional, perfusable bifurcation model consisting of a co-culture of endothelial cells with mural and glial cells. Experimental flow patterns predicted by computational fluid dynamics mimic in vivo flow regimes, specifically the presence of a recirculation zone immediately downstream of the bifurcation reveal periodic changes in the instantaneous shear stress …

Mutations In Hiv-1 Vpr Affect Pathogenesis In T-Lymphocytes And Novel Strategies To Contain The Current Covid-19 Pandemic, Antonio Solis Leal

Theses and Dissertations

Background SARS-CoV-2 is the virus responsible for the current global pandemic, COVID-19. Because this virus is novel, little is known about its sensitivity to disinfection. Methods We performed suspension tests against SARS-CoV-2 using three commercially available quaternary ammonium compound (Quat) disinfectants and one laboratory-made 0.2% benzalkonium chloride solution. Findings Three of the four formulations completely inactivated the virus within 15 s of contact, even in the presence of a soil load or when diluted in hard water. Conclusion Quats rapidly inactivate SARS-CoV-2, making them potentially useful for controlling SARS-CoV-2 spread in hospitals and the community.

Cape Gooseberry Husk For The Removal Of Cecs From Wastewater: A Biosorption Study, Jehan Abdel Salam

Theses and Dissertations

Food and beverage industries produce large amounts of fruit wastes that are normally discarded every year. Meanwhile, these industries along with the pharmaceutical industries discharge wastewater effluents that are loaded with contaminants of emerging concern (CECs). Recent research is directed towards finding alternative cost effective and sustainable solutions for treating wastewater. In this regard, we investigated cape gooseberry husk as a potential biosorbent for the removal of caffeine (CA) and salicylic acid (SA), as examples of CECs, from wastewater. Three different types of husk were investigated; un-activated husk (H), and chemically activated husks (H350 and H500) prepared by acid treatment …

Autophagic Reprogramming Of Bone Marrow-Derived Macrophages, Mayada Mahmoud Zaki Mohamed Mazher

Theses and Dissertations

ABSTRACT Background: Macroautophagy is a highly conserved catabolic process among eukaryotes. Autophagosome is a piece of double-membrane machinery that fuses with lysosomes during macroautophagy to form autolysosomes. Autolysosome degrades organelles and organizes the pathogen engulfment during phagocytosis in innate immunity. Macrophages are highly dynamic immune cells that orchestrate the host-pathogen interaction. Interestingly, autophagy is implicated in disease pathophysiologies such as Crohn’s disease, cancer, and neurodegenerative diseases. Therefore, we studied the interplay between autophagy and macrophage polarization (activation) through two approaches: 1- Systems biology approach to construct the genetic regulatory network and pathway analysis. And to predict the target proteins that …

Autophagic Reprogramming Of Macrophages Polarization, Mayada Mahmoud Zaki Mohamed Mazher

Theses and Dissertations

Background: Macroautophagy is a highly conserved catabolic process among eukaryotes. Autophagosome is a piece of double-membrane machinery that fuses with lysosomes to form autolysosomes. Autolysosome degrades organelles and organizes the pathogen engulfment during phagocytosis in innate immunity. Macrophages are highly dynamic immune cells that orchestrate the host-pathogen interaction. Interestingly, autophagy is implicated in disease pathophysiologies such as Crohn’s disease, cancer, and neurodegenerative diseases. Therefore, this work aimed to study the interplay between autophagy and macrophage polarization (activation) through two approaches, first to construct the genetic regulatory network and pathway analysis. And to predict the target proteins that mediate the interplay …

Discrete Element Modeling Of Hydrogel Extrusion, Rohit Boddu

Theses and Dissertations

Hydrogels are widely used in extrusion bioprinting as bioinks. Understanding how the hydrogel microstructure affects the bioprinting process aids researchers in predicting the behavior of biological components. Current experimental tools are unable to measure internal forces and microstructure variations during the bioprinting process. In this work, discrete element modeling was used to study the internal interactions and the elastic deformation of the molecular chains within hydrogel networks during the extrusion process. Two-dimensional models of hydrogel extrusions were created in Particle Flow Code (PFC; Itasca Co., Minneapolis, MN). For our model's calibration, hydrogel compression testing was used in which a cluster …

Using Student Talk And Reader Response Journals With Emergent Readers, Samantha Gudowski

Theses and Dissertations

The purpose of this study was to explore the impact on comprehension when emergent readers use talk and reader response journals to comprehend text. Data collected from reading attitude surveys, interviews, student journal entries, audio-recorded student conversations and notes in a teacher researcher journal were analyzed for emerging themes. The findings show that talk about text and the use of reader response journals have a positive impact on both reading comprehension and motivation. Implications for future research are discussed in chapter five.

Pёrcaktimi I Laktozёs Nё Qumёshtin E Disa Kafshёve Vendore, Kaltrina Elezi

Theses and Dissertations

Laktoza e qumështit shërben si burim kryesor i energjisë tek fëmijët në gji dhe foshnjat si dhe shërben si burim i makromolekulave për funksionimin e sistemit nervor, ushtron efekte të formësimit të mikroflorës së dobishme në zorrë, mbështet funksionin imunitar dhe lehtëson thithjen e mineraleve. Dobitë nga qumështi, veçanësisht produktet nga qumështi siç janë kosi dhe djathi i deleve dhe dhive janë të padiskutuara për njerëzit e moshave të rritura deri në pleqëri, veçanërisht për personat me probleme të keq tretjes së laktozës, pasi që këto produkte nuk përmbajnë ose përmbajnë fare pak laktozë.

Duke hipotezuar që për prodhimin e …