Digital Commons Network^™

Radiographic Evaluation Of Bone And Mucosa Using Low-Dose Cbct With Radiopaque X-Resin Stent Versus Ct And Ridge Mapping: A Validity Study, Enji Ahmed Mahmoud, Nader Nabil Rizkallah, Eman Abdelaziz, Mushira Mohamed Dahaba

Dentistry

No abstract provided.

Diagnostic And Prognostic Value Of Salivary Biomarkers In Oral Cancer And Precancer: Review Article, Dalia Ghalwash

Dentistry

Objectives: Salivary biomarker constitute major progress in diagnosis of oral cancer and is a rapidly developing arena of scientific research and is considered a promising prognostic and diagnostic utensil in oral malignant and oral potentially malignant disorders. The search for salivary biomarkers that may have importance in diagnosis, and prognosis of oral cancer is ongoing. Methods: A literature search was performed using the Cochrane library and PubMed databases from 1995 to September 2019. Results: In the recent biological era “omics” method is a new biomarker detection tool that emphasis on exploring many molecules present in saliva. Presently, five main salivary …

Effect Of Surface Treatment And Storage Time On Immediate Repair Bond Strength Durability Of Methacrylate- And Ormocer-Based Bulk Fill Resin Composites., Sara Adel Botros

Dentistry

The aim of this study was to evaluate the effect of surface treatment and storage time on immediate repair bond durability of methacrylate- and ormocer-based bulk fill composites. In total, 265 discs were divided into 32 groups (n = 8/group) according to: (1) Material: X-tra fil and Admira Fusion X-tra; (2) Surface treatment: oxygen inhibition; matrix; Futurabond M+; Silane/Futurabond M+; Admira Bond; Silane/Admira Bond; ceramic repair system; and Silane/Cimara bond; and (3) Storage time: 24 h and 6 months. Each disc received three micro-cylinders from the same material. Specimens were subjected to micro-shear bond strength testing either at 24 h …

Air Quality Assessment Due To Particulate Matter (Pm2.5 And Pm10) In Three Indian Cities (Delhi, Kolkata And Guwahati) And Implication On Health, Abhishek Dutta

Chulalongkorn University Theses and Dissertations (Chula ETD)

This study aimed to understand the level of air pollution in three Indian cities, i.e., Delhi, Kolkata, and Guwahati, evaluate the predictive ability of multiple linear regression (MLR) forecast models and assess the association between air pollution and daily hospital visits for the respiratory diseases (ICD-10, J00-J99). This study found that the mean value of PM concentrations for 2016-2018 was substantially higher than standard in all three cities. During COVID-19 in 2019-2020, air pollution compared control measurement, PM2.5, PM10, NO2, and CO were reduced drastically for Delhi but O3 and SO2 took an upward surge. Frequency analysis indicated winter season …

Gw190814: Gravitational Waves From The Coalescence Of A 23 Solar Mass Black Hole With A 2.6 Solar Mass Compact Object, R. Abbott, T. D. Abbott, S. Abraham, A. Aich, G. Bissenbayeva, Teviet Creighton, Mario C. Diaz, Soma Mukherjee

Physics & Astronomy Faculty Publications

We report the observation of a compact binary coalescence involving a 22.2 - 24.3 M⊙ black hole and a compact object with a mass of 2.50 - 2.67 M⊙ (all measurements quoted at the 90% credible level). The gravitational-wave signal, GW190814, was observed during LIGO's and Virgo's third observing run on August 14, 2019 at 21:10:39 UTC and has a signal-to-noise ratio of 25 in the three-detector network. The source was localized to 18.5 deg2 at a distance of 241+41−45 Mpc; no electromagnetic counterpart has been confirmed to date. The source has the most unequal mass ratio yet measured with …

Gw190412: Observation Of A Binary-Black-Hole Coalescence With Asymmetric Masses, R. Abbott, T. D. Abbott, S. Abraham, A. Aich, G. Bissenbayeva, Teviet Creighton, Mario C. Diaz, Volker Quetschke, Malik Rakhmanov, K. E. Ramirez, P. K. Roy

Physics & Astronomy Faculty Publications

We report the observation of gravitational waves from a binary-black-hole coalescence during the first two weeks of LIGO’s and Virgo’s third observing run. The signal was recorded on April 12, 2019 at 05∶30∶44 UTC with a network signal-to-noise ratio of 19. The binary is different from observations during the first two observing runs most notably due to its asymmetric masses: a ∼30 M⊙ black hole merged with a ∼8 M⊙ black hole companion. The more massive black hole rotated with a dimensionless spin magnitude between 0.22 and 0.60 (90% probability). Asymmetric systems are predicted to emit gravitational waves with stronger …

Preparing Commercial Space For Safety Management System Implementation, Brian Eugene Teske

Theses and Dissertations

In 2014 The commercial space company, Scaled Composites, suffered a catastrophic event during a test flight, killing one astronaut. Several recommendations for the Federal Aviation Administration, Office of Commercial Space Transportation emerged from the National Transportation Safety Board. One recommendation was the introduction of a safety management system (SMS) as a safety protocol and became the genesis of this research project. This study has two purposes. The first purpose is to investigate whether the attributes of safety management system theory (SMST) exist in commercial space organizations. The second purpose is to explore the characteristics of high reliability theory (HRT) to …

A Guide To Ligo–Virgo Detector Noise And Extraction Of Transient Gravitational-Wave Signals, B. P. Abbott, R. Abbott, Teviet Creighton, Mario C. Diaz, Soma Mukherjee, Volker Quetschke, Malik Rakhmanov, K. E. Ramirez, Satzhan Sitmukhambetov, Robert Stone, D. Tuyenbayev, W. H. Wang, A. K. Zadrozny

Physics & Astronomy Faculty Publications

The LIGO Scientific Collaboration and the Virgo Collaboration have cataloged eleven confidently detected gravitational-wave events during the first two observing runs of the advanced detector era. All eleven events were consistent with being from well-modeled mergers between compact stellar-mass objects: black holes or neutron stars. The data around the time of each of these events have been made publicly available through the gravitational-wave open science center. The entirety of the gravitational-wave strain data from the first and second observing runs have also now been made publicly available. There is considerable interest among the broad scientific community in understanding the data …

Uncertainty Quantification And Economic Dispatch Models For The Power Grid, Arun Sukumaran Nair

Theses and Dissertations

The modern power grid is constrained by several challenges, such as increased penetration of Distributed Energy Resources (DER), rising demand for Electric Vehicle (EV) integration, and the need to schedule resources in real-time accurately. To address the above challenges, this dissertation offers solutions through data-driven forecasting models, topology-aware economic dispatch models, and efficient optional power flow calculations for large scale grids. Particularly, in chapter 2, a novel microgrid decomposition scheme is proposed to divide the large scale power grids into smaller microgrids. Here, a two-stage Nearest-Generator Girvan-Newman (NGGN) algorithm, a graphicalclustering-based approach, followed by a distributed economic dispatch model, is …

Examining Links Between Culture, Identity, And Learning, Margaret Beale Spencer, Carly Offidani-Bertrand, Keshia Harris, Gabriel M. Velez

College of Education Faculty Research and Publications

Learning as a cultural process is deeply rooted in our biology and in our evolutionary history. Prior generational intrusions and major events have implications for patterned interactions, processes, and outcomes for subsequent cohorts. Elder’s “Children of the Great Depression: Social Change in Life Experience” (1974) provides an illustration determined by a major socioeconomic fluctuation. Specifically, his description of the long-term impacts of the early 20th century economic depression on youth as observed across time are parallel to current 21st century observations of developmental expressions of cultural processes having under-acknowledged foundations (Davis, Burleigh, & Gardner, 1941; Davis & Havighurst, 1946; …

Enhanced Pml Based On The Long Short Term Memory Network For The Fdtd Method, He Ming Yao, Lijun Jiang

Electrical and Computer Engineering Faculty Research & Creative Works

This paper proposes a new absorbing boundary condition (ABC) computation approach based on the deep learning technique. Benefited from the sequence dependence feature, the Long Short-Term Memory (LSTM) network is employed to replace the conventional perfectly matched layer (PML) ABC for the Finite-Difference Time-Domain (FDTD) solving process. The newly proposed LSTM based PML model is trained by the electromagnetic field data on the interface of the conventional PML. Different from the conventional PML, the newly proposed model only needs one cell layer as the boundary. Hence, the newly proposed method conveniently reduces both the algorithm's complexity and the area of …

Pseudospin-Polarized Topological Line Defects In Dielectric Photonic Crystals, Menglin L.N. Chen, Li (Lijun) Jun Jiang, Zhihao Lan, Wei E.I. Sha

Electrical and Computer Engineering Faculty Research & Creative Works

Electromagnetic (EM) topological insulators have been extensively explored due to the robust edge states they support. In this work, we propose a topological EM system based on a line defect in topologically nontrivial photonic crystals (PCs). With a finite-difference supercell approach, modal analysis of the PC structure is investigated in detail. The topological line-defect states are pseudospin polarized and their energy flow directions are determined by the corresponding pseudospin helicities. These states can be excited by using two spatially symmetric line-source arrays carrying orbital angular momenta. The feature of the unidirectional propagation is demonstrated, and it is stable when disorders …

Nurse Leader Influence And Nurse-Sensitive Outcomes In Critical Access Hospitals, Jennifer Diane Eccles

Theses and Dissertations

Introduction: Rural residents of the United States are sicker, are at higher risk of death, and have shorter lifespans than those in metropolitan areas (Singh & Siahpush, 2014). Nurse leaders may have the opportunity to influence improved patient outcomes in rural areas. No exploration of nurse leader influence as it relates to nurse-sensitive outcomes in rural healthcare settings was found in the literature. The purpose of this study was to determine the differences among nurse leader influence and nurse-sensitive outcome scores in critical access hospitals, which are rural in nature, in North Dakota as compared to other states in the …

Parental Leave Policies: Implications For Higher Education Policy, Muneka Nwoko

Theses and Dissertations

A persistent disadvantage of individuals and couples navigating and negotiating parental leave policies is often embedded in biased assumptions. Oftentimes, as a result, individuals and couples inherently encounter vastly different parental leave experiences. However, recommendations from the literature and federal policy support the need for gender equity, family-focused initiatives, and workplace interventions related to individuals and couples navigating and negotiating parental leave processes. Yet because of a lack of policy standardization, policy protocols related to these recommendations have proved unsuccessful in addressing the complexities individuals and couples experience when navigating and negotiating parental leave processes. Thus, this study applies a …

Effects Of Exercise Training On Resting Testosterone Concentrations In Sedentary Men: A Systematic Review And Meta-Analysis, Nolan James Potter

Theses and Dissertations

Background: The anabolic hormone testosterone plays a pivotal role in the healthy aging of men and tends to decline with age.

Objective: The aims of this systematic review and meta-analysis were twofold: 1) to evaluate the effect of exercise training on resting total testosterone concentration in men; and 2) to determine if the effects of exercise training differed by training type, age or weight status.

Methods: Electronic databases (MEDLINE, Scopus, CINAHL, and SPORTDiscus) were systematically searched (up to and including 19 September 2019) for peer-reviewed randomized controlled trials (RCTs) meeting the following criteria: apparently healthy, previously sedentary men (aged ≥18 …

Nature Inspired Solid–Liquid Phase Amphibious Adhesive, Alin Cristian Chipara, Gustavo Brunetto, Sehmus Ozden, Henrik Haspel, Partha Kumbhakar, Ákos Kukovecz, Zoltán Kónya, Robert Vajtai, Mircea Chipara, Douglas S. Galvao

Physics & Astronomy Faculty Publications

Here we report a new class of bio-inspired solid–liquid adhesive, obtained by simple mechanical dispersion of PVDF (polyvinylidene fluoride) (solid spheres) into PDMS (polydimethylsiloxane) (liquid). The adhesive behavior arises from strong solid–liquid interactions. This is a chemical reaction free adhesive (no curing time) that can be repeatedly used and is capable of instantaneously joining a large number of diverse materials (metals, ceramic, and polymer) in air and underwater. The current work is a significant advance in the development of amphibious multifunctional adhesives and presents potential applications in a range of sealing applications, including medical ones.

A Simple Graphical Method For Calculating The Standing Wave Frequencies On A Rectangular Membrane, Joseph D. Romano, Richard H. Price

Physics & Astronomy Faculty Publications

In introductory physics courses, simple arguments based on traveling waves on a string are used to relate the frequency of standing waves to boundary conditions, e.g., the fixed ends of the string. Here, we extend that approach to two-dimensional waves such as the oscillations of a rectangular membrane with edges fixed at the boundary. This results in a graphical method that uses only simple geometry and is suitable for explaining two-dimensional standing-wave oscillations to non-science majors, e.g., in a physics of sound and music class.

Constant Intensity Conical Diffraction In Discrete One-Dimensional Lattices With Charge-Conjugation Symmetry, Mojgan Dehghani, Cem Yuce, Tsampikos Kottos, Hamidreza Ramezani

Physics & Astronomy Faculty Publications

We engineer anomalous conical diffraction (CD), occurring in discrete one-dimensional lattices with chargeconjugation symmetry when an exceptional point is in the proximity of the modes that compose the initial excitation. The evolving waveform propagates ballistically, acquiring a constant intensity profile within the boundaries of the spreading cone. The linear increase in the total intensity along the propagation direction is responsible for the generation of constant intensity CD.

The Sentinel Effect And Financial Reporting Aggressiveness In The Healthcare Industry, Jared Koreff, S. W. G. Robb, G. Trompeter

School of Business Faculty Research

The sentinel effect posits that the perception of increased oversight is associated with improved behavior. We consider the association between enhanced government oversight and financial reporting aggressiveness in the healthcare industry. Specifically, we examine the association between criminal cases (pending cases and successful cases) against healthcare providers and the quality of subjective accounts that require significant judgment and have been shown to be linked to healthcare earnings management – revenue accruals and the allowance for doubtful accounts. We find that heightened government oversight is associated with lower financial reporting aggressiveness.

Decomposition Of 2-Soliton Solutions For The Good Boussinesq Equations, Vesselin Vatchev

School of Mathematical & Statistical Sciences Faculty Publications

We consider decompositions of two-soliton solutions for the good Boussinesq equation obtained by the Hirota method and the Wronskian technique. The explicit forms of the components are used to study the dynamics of 2-soliton solutions. An interpretation in the context of eigenvalue problems arising from KdV type equations and transport equations is considered. Numerical examples are included.

Absurdity In The Statehouse: Burlesque Legislation And The Politics Of Rejection, Calvin Coker

Faculty and Staff Scholarship

This manuscript analyzes the public debate over legislation designed to mock and reject regulations of abortion in the United States. The bills, such as one in Texas requiring men to remain abstinent and avoid seminal discharge outside of narrow circumstances, are intentionally unworkable to critique Targeted Regulation of Abortion Provider (TRAP) laws, and laws regulating access to abortion in the US. I argue the bills are a form of Burkean burlesque, a novel strategy of humor and biting critique in the context of the US abortion debate. As that debate is characterized primarily by Burke’s (1984) tragic frame, with a …

Results Of A Second Season Of Paleolithic Survey In The Agig Area: The Red Sea Region Of The Sudan, Amanuel Beyin, Abubakr Abdelrahman Adam, Ahmed Alhaj O. Balela, Boshra Abdella Adem

Faculty and Staff Scholarship

One of the contentious issues in paleoanthropology today concerns the geographic route/routes through which hominins (early humans) left Africa. The Nile corridor and the Strait of Bab al-Mandab (the southern Red Sea) are commonly cited as the likely routes by which hominins dispersed out of East Africa (Van Peer 1998; Derricourt 2005; Beyin 2006). However, the extent to which hominin movements remained confned to these regions is unclear. The western periphery of the Red Sea (WPRS) occupies a critical geographic location to be considered as an ideal region to assess the role of coastal habitats in hominin survival, and the …

Sex And Age Differences In Prevalence And Risk Factors For Prediabetes In Mexican-Americans, Kristina Vatcheva, Belinda M. Reininger, Susan P. Fisher-Hoch, Joseph B. Mccormick

School of Mathematical & Statistical Sciences Faculty Publications

AIMS:

Over 1/3 of Americans have prediabetes, while 9.4% have type 2 diabetes. The aim of our study was to estimate the prevalence of prediabetes in Mexican Americans, with known 28.2% prevalence of type 2 diabetes, by age and sex and to identify critical socio-demographic and clinical factors associated with prediabetes.

METHODS:

Data were collected between 2004 and 2017 from the Cameron County Hispanic Cohort in Texas. Weighted crude and sex- and age- stratified prevalences were calculated. Survey weighted logistic regression analyses were conducted to identify risk factors for prediabetes.

RESULTS:

The prevalence of prediabetes (32%) was slightly higher than …

The Quantization Of The Standard Triadic Cantor Distribution, Mrinal Kanti Roychowdhury

School of Mathematical & Statistical Sciences Faculty Publications

The quantization scheme in probability theory deals with finding a best approximation of a given probability distribution by a probability distribution that is supported on finitely many points. For a given k ≥ 2, let {Sj : 1 ≤ j ≤ k} be a set of k contractive similarity mappings such that Sj(x) = 1 2k−1x + 2(j−1) 2k−1 for all x ∈ R, and let P = 1 k Pk j=1 P ◦ S−1 j . Then, P is a unique Borel probability measure on R such that P has support the Cantor set generated by the similarity mappings …

On The Voronoi Conjecture For Combinatorially Voronoi Parallelohedra In Dimension 5, Mathieu Dutour Sikiric, Alexey Garber, Alexander Magazinov

School of Mathematical & Statistical Sciences Faculty Publications

In a recent paper, Garber, Gavrilyuk, and Magazinov [Discrete Comput. Geom., 53 (2015), pp. 245--260] proposed a sufficient combinatorial condition for a parallelohedron to be affinely Voronoi. We show that this condition holds for all 5-dimensional Voronoi parallelohedra. Consequently, the Voronoi conjecture in $\mathbb{R}^5$ holds if and only if every 5-dimensional parallelohedron is combinatorially Voronoi. Here, by saying that a parallelohedron $P$ is combinatorially Voronoi, we mean that $P$ is combinatorially equivalent to a Dirichlet--Voronoi polytope for some lattice $\Lambda$, and this combinatorial equivalence is naturally translated into equivalence of the tiling by copies of $P$ with …

Artificial Synaptic Behavior Of Aloe Polysaccharides-Based Device With Au As Top Electrode, Z. X. Lim, I. A. Tayeb, Z. A.A. Hamid, M. F. Ain, A. M. Hashim, J. M. Abdullah, A. A. Sivkov, F. Zhao, K. Y. Cheong

Electrical and Computer Engineering Faculty Research & Creative Works

Formulated, processed, and dried Aloe polysaccharides thin film sandwiched between ITO as bottom electrode and Au as top electrode has been adopted as an artificial synapse to emulate behavior of neuromorphic computing. The synaptic plasticity or weight has been modulated with this simple metal-insulator-metal structure by applying voltage sweep and voltage pulse, with excitatory postsynaptic current being monitored. Synaptic potentiation and depression have been demonstrated by applying 6 consecutive sweeps of voltage in positive and negative polarity, respectively. By varying number (10 - 50) of voltage pulses, variable synaptic weight has been measured with paired pulse facilitation and post-tetanic potentiation …

Intrauterine Exposure To Chronic Hypoxia In The Rat Leads To Progressive Diastolic Function And Increased Aortic Stiffness From Early Postnatal Developmental Stages, Praveen Kumar, Jude S. Morton, Amin Shah, Victor Do, Consolato Sergi, Jesus Serrano-Lomelin, Sandra T. Davidge, Donna Beker, Jody Levasseur, Lisa K. Hornberger

School of Medicine Publications

Aim

We sought to explore whether fetal hypoxia exposure, an insult of placental insufficiency, is associated with left ventricular dysfunction and increased aortic stiffness at early postnatal ages.

Methods

Pregnant Sprague Dawley rats were exposed to hypoxic conditions (11.5% FiO2) from embryonic day E15‐21 or normoxic conditions (controls). After delivery, left ventricular function and aortic pulse wave velocity (measure of aortic stiffness) were assessed longitudinally by echocardiography from day 1 through week 8. A mixed ANOVA with repeated measures was performed to compare findings between groups across time. Myocardial hematoxylin and eosin and picro‐sirius staining were performed to evaluate myocyte …

Invasive Wild Pigs As Primary Nest Predators For Wild Turkeys, Heather N. Sanders, David G. Hewitt, Humberto L. Perotto-Baldivieso, Kurt C. Vercauteren, Nathan P. Snow

United States Department of Agriculture Wildlife Services: Staff Publications

Depredation of wild turkey (Meleagris gallopavo) nests is a leading cause of reduced recruitment for the recovering and iconic game species. invasive wild pigs (Sus scrofa) are known to depredate nests, and have been expanding throughout the distributed range of wild turkeys in north America. We sought to gain better insight on the magnitude of wild pigs depredating wild turkey nests. We constructed simulated wild turkey nests throughout the home ranges of 20 GPS-collared wild pigs to evaluate nest depredation relative to three periods within the nesting season (i.e., early, peak, and late) and two nest densities (moderate = 12.5-25 …

Effect Of Vaccination With A Novel Gnrh-Based Immunocontraceptive On Immune Responses And Fertility In Rats, Giovanna Massei, D. Cowan, Douglas C. Eckery, Richard E. Mauldin, M. Gomm, P. Rochaix, Fergal Hill, R. Pinkham, Laura A. Miller

United States Department of Agriculture Wildlife Services: Staff Publications

1. As human-wildlife conflicts increase worldwide, novel methods are required for mitigating these conflicts. Fertility control, based on immunocontraceptives, has emerged as an alternative option to lethal methods for managing wildlife.

2. Immunocontraceptives are vaccines that generate an immune response to key components of an animal's reproductive system. Some of these vaccines target the gonadotropin-releasing hormone (GnRH) and have been used successfully as contraceptives for many wildlife species. However, the need to capture animals for treatment limits the field applications of injectable vaccines. The availability of orally delivered immunocontraceptives would increase the breadth of applications of fertility control for wildlife …

Ecological Drivers Of African Swine Fever Virus Persistence In Wild Boar Populations: Insight For Control, Kim M. Pepin, Andrew J. Golnar, Zaid Abdo, Tomasz Podgórski

United States Department of Agriculture Wildlife Services: Staff Publications

Environmental sources of infection can play a primary role in shaping epidemiological dynamics; however, the relative impact of environmental transmission on host-pathogen systems is rarely estimated. We developed and fit a spatially explicit model of African swine fever virus (ASFV) in wild boar to estimate what proportion of carcassbased transmission is contributing to the low-level persistence of ASFV in Eastern European wild boar. Our model was developed based on ecological insight and data from field studies of ASFV and wild boar in Eastern Poland. We predicted that carcass- based transmission would play a substantial role in persistence, especially in low-density …