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2019

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The Effect Of Perinatal Depression Upon Neonatal Outcome In A Population Of Adolescent Latinas, Jocelyn Ruiz Dec 2019

The Effect Of Perinatal Depression Upon Neonatal Outcome In A Population Of Adolescent Latinas, Jocelyn Ruiz

2019 Fall Honors Capstone Projects - Archive

The purpose of this secondary analysis was to explore the prevalence of perinatal depression and effects of depression upon neonatal outcomes among Latina adolescents. The subjects included Latina adolescents (13-19 years old; N=183) giving birth at John Peter Smith Hospital in Fort Worth, TX. The study design was a secondary analysis of data originally collected over nine months postpartum to explore adolescents’ (N=303) mental health and birth experiences. Depression variables were measured via a one-item rating scale for prenatal depression and the Edinburg Postpartum Depression Scale (EPDS). A composite variable of this data defined perinatal depression. Adverse infant outcomes included …

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Zombie Firms And The Interest Rate Channel, Ismael Guzman-Diaz Dec 2019

Zombie Firms And The Interest Rate Channel, Ismael Guzman-Diaz

2019 Fall Honors Capstone Projects - Archive

In this paper we investigate the interaction between interest rates and the prevalence of so called ‘Zombie’ firms. Zombie firms are relatively unproductive, insolvent firms, who nevertheless remain in the market. The past several decades have witnessed a steady rise in the prevalence of these firms across advanced economies. Significant evidence now exists of their detrimental effects on healthy firms within their industries and on the economy as a whole through allocative inefficiencies and drags on productivity growth. Notably, this zombie phenomenon coincides with the long-term lowering trend in benchmark interest rates, providing a theoretical life-support mechanism through which zombie …

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Opening French Doors: An Examination Of French Business Executives’ Perspectives On Work Disparities Between American And French Work Cultures In The Dallas-Fort Worth Metroplex, Yahaira Arneros Dec 2019

Opening French Doors: An Examination Of French Business Executives’ Perspectives On Work Disparities Between American And French Work Cultures In The Dallas-Fort Worth Metroplex, Yahaira Arneros

2019 Fall Honors Capstone Projects - Archive

The United States is no stranger to hosting foreign business subsidiaries in our evergrowing international business world. As the US opens its doors to native French business executives, one asks how their culture perceives US workers and how to ensure that business relations between the two flow as smoothly as possible. Qualitative data was gathered from three native French business executives, in three native French subsidiaries in the DFW Metroplex. Data was gathered in face-to-face personal interviews conducted in French about disparities between French and American work culture. Similarities in perception of US work culture by the French were found …

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Modeling The Effects Of The Development Of Fm 156 On The Big Fossil Creek - West Trinity River Watershed, Valerie Arruda Dec 2019

Modeling The Effects Of The Development Of Fm 156 On The Big Fossil Creek - West Trinity River Watershed, Valerie Arruda

2019 Fall Honors Capstone Projects - Archive

Urban development increases the runoff created from a property, requiring analysis to ensure the watershed in question is not negatively affected, and adjacent properties are not adversely impacted. This study focuses on a project currently being done by the Texas Department of Transportation, including the widening and reconstruction of FM 156 in Saginaw, Texas, within the Big Fossil Creek Watershed. This project runs through a FEMA floodway, presenting challenges in the allowed scope of work. The focus of this study is to model the watershed using the hydraulic analysis software, HEC-RAS, and to design the proposed 4-lane roadway profile, including …

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Enhancements Of Shear Tests For Asphalt Concrete, Yazeed Suleiman Jweihan Dec 2019

Enhancements Of Shear Tests For Asphalt Concrete, Yazeed Suleiman Jweihan

Civil Engineering Dissertations - Archive

The measurement of the fundamental shear properties of asphalt mixes is imperative to the improvement of modelling of rutting development in asphalt concrete. The Duplicate Shear Tester (DST) is a recent device developed at the University of Texas at Arlington as a replacement to the Superpave Shear Tester (SST). It measures the average shear properties of two asphalt concrete specimens at the same time. It has ability to perform the two common SST tests: the FSCH and RSCH in according to the standard test method AASHTO T-320. Although the DST has successfully satisfied the objectives of being a reliable, inexpensive …

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Deep Ellum: Portrait Of A Community Lesson Introduction & Resources, Elizabeth Barnes Dec 2019

Deep Ellum: Portrait Of A Community Lesson Introduction & Resources, Elizabeth Barnes

K-12 Teacher African American History Research Grant Program 2019

This lesson gives an in-depth look at how an 1930's WPA historian characterized the segregated community of Deep Ellum. Students are asked to analyze the reading and make connections to their own time. Refer to the supplemental files below for all materials and resources developed for this lesson.

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Mansfield Integration Incident: A Mini Unit On School Desegregation And Social Justice & Resources, David Mabry Dec 2019

Mansfield Integration Incident: A Mini Unit On School Desegregation And Social Justice & Resources, David Mabry

K-12 Teacher African American History Research Grant Program 2019

This mini-unit contains lesson plans that were designed to give a local connection to students studying the desegregation of schools following the historic Brown v Board of Education decision on 1955. The incident in Mansfield was significant in the fact that the governor of the state used state law enforcement officers to ensure African-American students did not register for the new school year at Mansfield High School. These plans included a variety of activities to understand the struggle for equality of education and its importance in overcoming Jim Crow legislation throughout the South. the construction of a timeline for desegregation …

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Physical Characterization And Evaluation Of Energy Potential For Mined Waste From Irving Landfill, Vijay Kakara Dec 2019

Physical Characterization And Evaluation Of Energy Potential For Mined Waste From Irving Landfill, Vijay Kakara

Civil Engineering Theses - Archive

Historically landfills have been seen as the ultimate solution for storing waste at minimum cost. But, now it is a well-known fact that these deposits have numerous implications such as long term methane emissions, local pollution and many space-related issues etc. In most parts of the world, however, landfilling is the most common method to dispose waste. Even developed countries with recycling and waste treatment facilities have been no exception in landfilling. Therefore over the years, several old and operating landfills have been accumulated with an enormous amount of obsolete materials and products. To address such issues related to waste …

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Driveability Of Recycled Plastic Pin (Rpp) In North Texas, Arif Mohammad Aziz Dec 2019

Driveability Of Recycled Plastic Pin (Rpp) In North Texas, Arif Mohammad Aziz

Civil Engineering Theses - Archive

The Recycled Plastic Pins (RPP) have been extensively used as an alternative to the conventional slope stabilization methods in stabilizing shallows slope failure in Texas, Missouri, Kansas, and Idaho in the United States. The RPP provides additional resistance along the potential slip surface when it is driven into the slope and increases the factor of safety. RPPs are fabricated from recycled plastics and waste materials (i.e. polymers, sawdust, and fly ash), and is nondegradable in nature. It is found to be very useful and beneficial engineering materials for civil engineering infrastructure projects. The cost-effectiveness of using any engineering material largely …

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Black Agency And Aesthetic Innovation In Sergio Giral's El Otro Francisco, Philip Kaisary Dec 2019

Black Agency And Aesthetic Innovation In Sergio Giral's El Otro Francisco, Philip Kaisary

PALARA: Publication of the Afro-Latin/American Research Association

In 2013, Henry Louis Gates lamented the tradition of whitewashing and the passing over of slave stories which has become commonplace throughout cinematic history: “there have been all too few films that have captured, or even attempted to convey, the truth of the experience of slavery, from the slave’s point of view” and even fewer “worthy of recognition.” While it is true that there have been some high-profile films produced in the last decade – 12 Years a Slave, Django Unchained, and Birth of a Nation, among others – that have endeavored to represent slavery from the …

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Analysis Of Laminated Curved Beam With And Without Defects And Imperfections, Wei-Tsen Lu Dec 2019

Analysis Of Laminated Curved Beam With And Without Defects And Imperfections, Wei-Tsen Lu

Mechanical and Aerospace Engineering Dissertations - Archive

Several studies have focused on the modeling and response characterization of composite structural members, with particular emphasis on composite curved beams. The class of curved beam is explored to determine mechanical response in primary aerospace structural applications. The present work focuses on developing analytical closed-form solutions for investigating composite curved beams with and without fiber waviness and delamination. The present work can efficiently characterize the structural behavior of composite curved beams under bending. This work shows the development of a novel mathematical approach to predict structural performance by investigating axial stiffness, bending stiffness with consideration of shear deformation in composite …

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Electrowetting-On-Dielectric (Ewod) Digital Microfluidic Device For Synthetic Organic Chemistry, Matin Torabinia Dec 2019

Electrowetting-On-Dielectric (Ewod) Digital Microfluidic Device For Synthetic Organic Chemistry, Matin Torabinia

Mechanical and Aerospace Engineering Dissertations - Archive

Over the past decades, microscale chemical reaction technology has been attractive in diverse areas of chemistry. It allows the precise control of quantified reagents and highly efficient heat and mass transfer, because of a large interface-to-volume ratio–particularly in case of the exothermic reaction and mixing–, reduced consumption of toxic or expensive agents, improved reaction profiles, and enhanced selectivity compared to macro-scale reactions. The mainstream microscale reaction processes were established using continuous microchannel flow systems, which has emerged as a powerful complement to batch chemistry on the laboratory scale due to relative advantages, some of which include: increased safety, more accurate …

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An Implementation Of The Regularized Extended Finite Element Method In Abaqus, Yu-Jui Liang Dec 2019

An Implementation Of The Regularized Extended Finite Element Method In Abaqus, Yu-Jui Liang

Mechanical and Aerospace Engineering Dissertations - Archive

The Regularized eXtended Finite Element Method (Rx-FEM) methodology is a discrete damage modeling (DDM) technique, which represents an approach to the progressive damage analysis (PDA) in laminated composites when multiple damage events such as matrix cracks and delamination are introduced into the model via the displacement discontinuities. In the Rx-FEM, the Heaviside step function that is typically used to introduce a displacement discontinuity across a crack surface in the eXtended Finite Element Method (x-FEM) is replaced by a continuous function approximated by using the finite element (FE) shape functions. This regularization offers unique possibility for the implementation of the Rx-FEM …

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African American Women's Resistance In The Aftermath Of Lynching, Lacey A. Brown-Bernal Dec 2019

African American Women's Resistance In The Aftermath Of Lynching, Lacey A. Brown-Bernal

History Theses - Archive

This thesis focuses on resistance strategies used by African American women in the aftermath of lynching in the late nineteenth and early twentieth centuries. It examines the ways in which those strategies were shared, modified, and deployed by black women activists throughout the Jim Crow Era and traces the connection to contemporary movements for social justice. The starting point for this study of generational change within African American women’s resistance to violence is the transatlantic anti-lynching campaign of Ida B. Wells and an examination of newspaper articles that detailed her actions while abroad with an eye to considering how her …

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Advances In Liquid Chromatography And Liquid Chromatography- Mass Spectrometry For The Chiral Analysis Of Amino Acids And Differentiation Of Isomeric Amino Acid Residues In Peptides/Proteins From Complex Matrices, Siqi Du Dec 2019

Advances In Liquid Chromatography And Liquid Chromatography- Mass Spectrometry For The Chiral Analysis Of Amino Acids And Differentiation Of Isomeric Amino Acid Residues In Peptides/Proteins From Complex Matrices, Siqi Du

Chemistry & Biochemistry Dissertations - Archive

Amino acids are essential building blocks in all living organisms. Initially it was believed that only L-amino acids were relevant in higher organisms, and D-amino acids were laboratory artifacts. Today, various D-amino acids have been detected in different organisms, including humans, and some even play essential roles in biological processes. In addition, abnormal D-amino acid levels have been reported in patients with different diseases. The variations in D-amino acid levels might be of some diagnostic value. However, our knowledge of D-amino acids remains limited and most of the D-amino acids are not well investigated due to the lack of a …

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Direct Functionalization Of Inert C-H And C=C Bonds Using Copper And Zinc Catalysts Supported By Fluorinated Ligands, And The Chemistry Of Fe(Co)5 And Its Analogs With Coinage Metal Ions, Tharun Teja Ponduru Dec 2019

Direct Functionalization Of Inert C-H And C=C Bonds Using Copper And Zinc Catalysts Supported By Fluorinated Ligands, And The Chemistry Of Fe(Co)5 And Its Analogs With Coinage Metal Ions, Tharun Teja Ponduru

Chemistry & Biochemistry Dissertations - Archive

Transition-metal catalyzed direct functionalization of inert C-H and C=C bonds through nitrene- and oxo-transfer reactions are powerful and attractive synthetic strategies for constructing C-N and C-O bonds (e.g. found in amines, aziridines, alcohols, and carbonyl compounds) directly from hydrocarbon feedstocks, and have significant synthetic potential in chemical processes leading to natural products, pharmaceuticals and biologically active molecules. Chapters 2 and 3 of this work mainly focus on nitrene- and oxo-insertion chemistry catalyzed by transition metal complexes. We employed different types of fluorinated ligands to support copper and zinc metal centers. Therefore, complexes [HB(3,5-(CF3)2Pz)3]Cu(NCMe), [H2B(3,5-(CF3)2Pz)2]Cu(NCMe), [H2B(3,5-(CF3)2-4-(NO2)Pz)2]Cu(NCMe), [{(3,5-(CF3)2Pz)ZnEt}2(μ-THF)], [{(3-(CF3),5-(t-Bu)Pz)ZnEt}2(μ-THF)], [{(3,5-(i-Pr)2Pz)ZnEt}2(μ-THF)], [N{(CF3)C(C6F5)N}2]CuNCCH3, and …

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Systematic Approach To On-Line Supercritical Fluid Extraction – Supercritical Fluid Chromatography – Tandem Mass Spectrometry Method Development, Alison Paige Wicker Dec 2019

Systematic Approach To On-Line Supercritical Fluid Extraction – Supercritical Fluid Chromatography – Tandem Mass Spectrometry Method Development, Alison Paige Wicker

Chemistry & Biochemistry Dissertations - Archive

Coupling supercritical fluid extraction (SFE) on-line with supercritical fluid chromatography (SFC) – tandem mass spectrometry (MS/MS) provides a platform for extraction, separation, and detection in a single analysis. Utilization of this technique simplifies sample preparation while limiting sample loss and/or contamination and significantly decreases total analysis time. SFE-SFC-MS/MS requires consideration of many extraction and chromatographic variables to not only provide the most efficient extraction, but to analytically transfer the extracted analytes to the column for separation. There is a fundamental lack of understanding of how the variables in SFE affect those in SFC. In the first study, on-line SFE-SFC-MS/MS was …

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High Confidence Identification Of Cross-Linked Peptides By Mass Spectrometry Cleavable Cross-Linking Technologies, Jayanta Kishor Chakrabarty Dec 2019

High Confidence Identification Of Cross-Linked Peptides By Mass Spectrometry Cleavable Cross-Linking Technologies, Jayanta Kishor Chakrabarty

Chemistry & Biochemistry Dissertations - Archive

Mass spectrometry (MS)-based chemical cross-linking technique is a potential tool for understanding the protein structure and protein-protein interactions. However, low abundances of cross-linked products and the data complexity are the major challenges in this field. New strategies are required to pinpoint cross-linked peptides with high confidence. Our lab designed and synthesized a novel cross-linker with two differential MS-cleavable bonds, namely DUCCT. DUCCT-cross-linked peptide generates different diagnostic fragment ions in Collision Induced Dissociation (CID) and Electron Transfer Dissociation (ETD) (tandem mass spectrometric technique) which helps in the unambiguous identification of cross-linked peptide. We demonstrate the efficiency of DUCCT technology with model …

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A Critical State Approach To The Mechanical Behavior Of Early-Age Cemented Paste Backfill, Amin B. Ghorbanpour Dec 2019

A Critical State Approach To The Mechanical Behavior Of Early-Age Cemented Paste Backfill, Amin B. Ghorbanpour

Civil Engineering Dissertations - Archive

Low plasticity to non-plastic mine tailings are typically transported to a storage area through pipelines in form of slurry or thickened tailings. The main concern with such tailings deposits is the possibility of liquefaction and the consequent failure of the tailings retaining dams. Tailings can also be used as Cemented Paste Backfill (CPB) material to fill previously mined underground voids. The state of practice to improve the mechanical properties of tailings is to add a small quantity of cementitious materials or binder agents. Portland cement (PC) is the most common binder agent that is used to improve the mechanical properties …

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Sub-Synchronous Resonance Analysis And Detection, Igor Brandao Machado Matsuo Dec 2019

Sub-Synchronous Resonance Analysis And Detection, Igor Brandao Machado Matsuo

Electrical Engineering Dissertations - Archive

With the increasing penetration of renewable generation resources, power grids have become more susceptible to sub-synchronous resonance phenomena, especially to sub-synchronous control interaction, which produces fast-growing oscillations. The power system operation requirements for a reliable, fast and accurate detection and monitoring system for protection and mitigation purposes are increasing. Besides, risk assessment analysis during grid planning and update studies can be extremely time-consuming due to a large number of possible grid configurations and small time-steps required for the simulation of detailed electromagnetic transient (EMT) models. The first part of this dissertation aims to provide an optimized tool for SSR risk …

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Flexible Ph Sensor For Smart Sensing, Khengdauliu Chawang Dec 2019

Flexible Ph Sensor For Smart Sensing, Khengdauliu Chawang

Electrical Engineering Theses - Archive

pH level of biofluid is crucial in understanding physiological health. Commercial glass electrode pH sensors are bulky and cannot provide real time data. In this study, a novel miniature pH sensor capable of continuous wireless communication was developed, which is a promising technology for providing point-of-care diagnosis. Iridium Oxide because of its wide pH sensing range and biocompatibility has attracted attention from biomedical and food industries; high sensitivity of Iridium Oxide based sensor is attributed to its high charge density. Flexible polyamide Kapton substrate (127 µm) is taken as base substrate and E-Beam method is employed to deposit adhesion and …

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Using Property-Based Testing, Weighted Grammar-Based Generators, And A Consensus Oracle To Test Browser Rendering Engines And To Reproduce Minimized Versions Of Existing Test Cases, Joel David Martin Dec 2019

Using Property-Based Testing, Weighted Grammar-Based Generators, And A Consensus Oracle To Test Browser Rendering Engines And To Reproduce Minimized Versions Of Existing Test Cases, Joel David Martin

Computer Science and Engineering Dissertations - Archive

Verifying that a web browser rendering engine correctly renders all valid web pages is challenging due to the size of the input space (valid web pages), the difficulty of determining correct rendering for any given web page (the test oracle problem), and the degree to which normal variation in browser rendering behavior can obscure other differences (fonts, bor- ders, input controls, etc). These challenges lead to manual human involvement during the testing process. We propose a new Property-Based Testing (PBT) approach that addresses these challenges in order to enable automated web browser render testing. Our approach is composed of the …

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A Mathematical Analysis Of A Model Of Drug Action On Intracellular Calcium Dynamics, Marah Townzen Funk Dec 2019

A Mathematical Analysis Of A Model Of Drug Action On Intracellular Calcium Dynamics, Marah Townzen Funk

2019 Fall Honors Capstone Projects - Archive

The dysregulation of intracellular Ca2+ dynamics is a hallmark feature of several types of cancer. Administering a combination of a drug that blocks store-operated Ca2+ entry and a drug that inhibits tyrosine kinases is a novel chemotherapeutic approach currently being explored. Using data from experimental trials of these drugs, an existing model of Ca2+ dynamics was modified via the Michaelis-Menten theory of enzyme kinetics to reflect the behavior of the cell upon administration of the drugs. Mathematical analyses were performed to determine the overall repercussions of this modification. This included sensitivity analysis to reveal the model's sensitivity to changes to …

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Physical Educators And Awareness Of Impact: Weight Biases By Gender And Implications On The Well-Being Of Students, Aria Green Dec 2019

Physical Educators And Awareness Of Impact: Weight Biases By Gender And Implications On The Well-Being Of Students, Aria Green

2019 Fall Honors Capstone Projects - Archive

Educators are considered primary socializers for children, meaning they have a significant impact on behavioral, academic and interpersonal development. Physical educators, particularly male educators, have been found to express persistent biases against students who appear or are labeled overweight. These shown biases can negatively affect child development; if educators are aware of their impacts, these negative effects could be prevented. This study looked for evidence on the relationship between influential awareness, expressed weight biases and gender of physical educators. Physical educators were asked to fill out a survey which included an influence awareness scale, demographics, personality measures and then reviewed …

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Creative Project In Storytelling: A Perspective Exploration Of Digital Design, Animation, And Virtual Reality, Vincent Williams Ii Dec 2019

Creative Project In Storytelling: A Perspective Exploration Of Digital Design, Animation, And Virtual Reality, Vincent Williams Ii

2019 Fall Honors Capstone Projects - Archive

The impression of youth, their sense of identity and belonging are themes commonly discussed in relation to mass media and societal structures across the globe. Both the risk expectancy and the innovative potential of virtual reality was hypothesized through a number of creative studies. Initially, interviews with developers and local creatives were conducted to better established a common understanding of existing virtual technologies. Studies in narrative storytelling were then utilized to develop concepts, scripts, and a directorial vision for the fictional story “The Years Before.” A short proof of concept film that explores how creators may interact with near-future advancements …

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The Case Of Jesse Washington Lesson & Resources, Elizabeth Barnes Dec 2019

The Case Of Jesse Washington Lesson & Resources, Elizabeth Barnes

K-12 Teacher African American History Research Grant Program 2019

Students will analyze the lynching of a young boy after his questionable conviction for the murder of a woman on a Waco cotton farm. His violent murder became the battle cry for the NAACP's campaign to usher in a national anti-lynching law.

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Material Characterization And Fracture Prediction Of Fdm Printed Parts, Sanchita Sheth Dec 2019

Material Characterization And Fracture Prediction Of Fdm Printed Parts, Sanchita Sheth

Mechanical and Aerospace Engineering Theses - Archive

In order to take advantage of the design freedom that Additive Manufacturing offers, most applications require reliable material characterization. This can ensure that a design performs within its environment and life requirements. This work discusses two models. One investigates the raster angle dependency of stiffness properties and the other numerically predicts fracture in Fused Deposition Modeling (FDM) printed polymer parts. Pre-processing of FDM geometry was done in Abaqus CAE (SIMULIA TM). FEA and post-processing was done in BSAM, which is a damage prediction software developed for composites. BSAM uses a regularized extended finite element approach of Discrete Damage Modeling. In …

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A Robust Controller Design For A Tailless Uav With Effective Control Allocation, Ethem Hakan Orhan Dec 2019

A Robust Controller Design For A Tailless Uav With Effective Control Allocation, Ethem Hakan Orhan

Mechanical and Aerospace Engineering Theses - Archive

Attempts to completely remove the tails from aircraft can be dated back to the early days of modern aviation. A number of stability and control problems arising from the unique characteristics of the configuration resulted in poor handling qualities and some dangerous flight characteristics in the early designs. Lately, this configuration is becoming widespread again and the current state-of-the-art of fly-by wire technology and modern control design techniques enable design of tailless aircraft which are safe to fly. In this thesis, a study on the application of modern robust control design techniques on a tailless UAV is presented. A nonlinear …

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Final Project Report, Andrea Hicks, Sue Ahn, Kontar Wissam Dec 2019

Final Project Report, Andrea Hicks, Sue Ahn, Kontar Wissam

CTEDD Final Project Reports - Archive

No abstract provided.

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Final Project Report, Kristine Williams, Jeff Kramer Dec 2019

Final Project Report, Kristine Williams, Jeff Kramer

CTEDD Final Project Reports - Archive

No abstract provided.

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