Digital Commons Network^™

Translation And Validation Of The Spanish Version Of The Rapid Estimate Of Adult Literacy In Dentistry-30, Wilma Luquis

Walden Dissertations and Doctoral Studies

Low or marginal health literacy affect nearly 90 million citizens in the United States, compromising health outcomes, including oral health. Oral health literacy has been studied in diverse populations, yet the assessments used were developed and validated for English-speaking populations. A validated Spanish-language oral health literacy assessment was needed to help researchers and practitioners evaluate oral health literacy in the Hispanic population. Using the oral health literacy framework, the purpose of this study was to translate, culturally adapt, and validate a Spanish version of a previously validated English-language oral health literacy. A translation-back-translation process was applied to the English version …

Composite Risk Behaviors That Enhance The Transmission Of Malaria In Pregnancy, John Olusegun Dada

Walden Dissertations and Doctoral Studies

Malaria causes high morbidity and mortality, especially among the most vulnerable populations, including pregnant women. Malaria in pregnancy (MiP) can be prevented by compliance with the 3 core measures: sleeping under insecticide-treated nets (ITNs), 3 doses of sulfadoxine-pyrimethamine as intermittent preventive treatment (IPTp-SP), and effective case management of malaria and anemia. The purpose of this cross-sectional household survey was to examine the composite risk behaviors that enhance the transmission of MiP. Stratified and multistage sampling methods were used to select a sample of 300 pregnant women in Abuja, Nigeria. Bivariate and multivariate analysis were conducted. According to study findings, participants' …

Body Piercing And Health Complications Among College Students In Puerto Rico, Elsie Goicochea

Walden Dissertations and Doctoral Studies

The incidence and prevalence of body piercing health complications among students is a public health matter that has not been researched in Puerto Rico. College students are the most consistent participants in body piercing activities and have reported health complications resulting in visits to medical offices and emergency rooms. Based on the health belief model, which is used to explain and predict health attitudes, the purpose of this quantitative nonexperimental study was to analyze the health risks and possible complications occurring after body piercing and to investigate the association between sex and age and medical complications. Data were collected from …

Strategies And Processes For Implementing Financial Analysis For Business Success, Dawn Theona Alexander-Joseph

Walden Dissertations and Doctoral Studies

The early failure of startup businesses is a concern for many local communities, including the Virgin Islands, with about half of startups failing within the first 5 years of their life cycle. Besides the social and economic impact on communities, these failures have a personal effect on small business owners. Grounded in decision-making theory and the theory of financial management, the purpose of this single case study was to explore strategies and processes Virgin Islands retail business managers use to implement financial analysis for decision making to help sustain their operations. Data were collected using company records and semistructured interviews …

Balancing Career And Family: The Nigerian Woman's Experience, Ngozi Eze

Walden Dissertations and Doctoral Studies

Nigerian women have become more integrated into the workforce, but this integration has led to conflicts between work and family responsibilities. The purpose of this phenomenological study was to explore the lived experiences of Nigerian women regarding challenges and strategies in management and leadership positions in relation to their domestic lives and responsibilities. Liberal and social feminist theory and gendered leadership theory were used as the conceptual framework of the study. The findings of this study came from data obtained from semistructured interviews with 15 Nigerian women in leadership and management positions regarding their perceptions and lived experiences of balancing …

Spiritual Well-Being, Intelligence, And Job Satisfaction Among U.S. Federal Employees, Jesse Earl Moore

Walden Dissertations and Doctoral Studies

Until a slight 1% increase in FY2015, job satisfaction within the United States federal government had decreased between 2010 and 2014. However, even with the slight increase, the job satisfaction level was low which presents a cause for concern for federal government agencies. A growing body of research has indicated that employees are looking for ways to express their spiritual essence in the workplace. Research in this area has suggested that when organizations allow their employees to exercise their spiritual essence in the workplace it not only increases job satisfaction for the employee but also increases job performance. This study …

Target Mass Effects In Parton Quasi-Distributions, A. V. Radyushkin

Physics Faculty Publications

We study the impact of non-zero (and apparently large) value of the nucleon mass M on the shape of parton quasi-distributions Q(y, p₃), in particular on its change with the change of the nucleon momentum p_3. We observe that the usual target-mass corrections induced by the M-dependence of the twist-2 operators are rather small. Moreover, we show that within the framework based on parametrizations by transverse momentum dependent distribution functions (TMDs) these corrections are canceled by higher-twist contributions. We identify a novel source of kinematic target-mass dependence of TMDs and build models corrected for …

First Measurement Of Unpolarized Semi-Inclusive Deep-Inelastic Scattering Cross Sections From A He 3 Target, X. Yan, K. Allada, K. Aniol, J. R. M. Annand, T. Averett, F. Benmokhtar, W. Bertozzi, P. C. Bradshaw, P. Bosted, A. Camsonne, M. Canan

Physics Faculty Publications

The unpolarized semi-inclusive deep-inelastic scattering (SIDIS) differential cross sections in ³He(e,e′π^±)X have been measured for the first time in Jefferson Lab experiment E06-010 with a 5.9GeV e- beam on a ³He gas target. The experiment focuses on the valence quark region, covering a kinematic range 0.12<x_bj<0.45,1<Q²<4(GeV/c)²,0.45<z_h<0.65, and 0.05<P_t<0.55GeV/c. The extracted SIDIS differential cross sections of π^± production are compared with existing phenomenological models while the ³He nucleus approximated as two protons and one neutron in a plane-wave picture, in multidimensional bins. Within …

Dynamic Transition Of Vortices Into Phase Slips And Generation Of Vortex-Antivortex Pairs In Thin Film Josephson Junctions Under Dc And Ac Currents, Ahmad Sheikhzada, Alex Gurevich

Physics Faculty Publications

We present theoretical and numerical investigations of vortices driven by strong dc and ac currents in long Josephson junctions described by a nonlinear integro-differential equation which takes into account nonlocal electrodynamics of films, vortex bremsstrahlung, and Cherenkov radiation amplified by the attraction of vortices to the edges of the junction. This work focuses on the dynamics of vortices in Josephson junctions in thin films where the effects of Josephson nonlocality are essential but London screening is negligible. We obtained an exact solution for a vortex driven by an arbitrary time-dependent current in an overdamped junction where the vortex turns into …

Measurement Of Two-Photon Exchange Effect By Comparing Elastic E ± P Cross Sections, D. Rimal, D. Adikaram, B. A. Raue, L. B. Weinstein, J. Arrington, W. K. Brooks, M. Ungaro, K. P. Adhikari, A. V. Afanasev, Z. Akbar

Physics Faculty Publications

Background: The electromagnetic form factors of the proton measured by unpolarized and polarized electron scattering experiments show a significant disagreement that grows with the squared four-momentum transfer (Q²) . Calculations have shown that the two measurements can be largely reconciled by accounting for the contributions of two-photon exchange (TPE). TPE effects are not typically included in the standard set of radiative corrections since theoretical calculations of the TPE effects are highly model dependent, and, until recently, no direct evidence of significant TPE effects has been observed.

Purpose: We measured the ratio of positron-proton to electron-proton elastic-scattering cross …

Exploring The Reasons For The Seasons Using Google Earth, 3d Models, And Plots, Declan G. De Paor, Mladen M. Dordevic, Paul Karabinos, Stephen Burgin, Filis Coba, Steven J. Whitmeyer

Physics Faculty Publications

Public understanding of climate and climate change is of broad societal importance. However, misconceptions regarding reasons for the seasons abound amongst students, teachers, and the public, many of whom believe that seasonality is caused by large variations in Earth's distance from the Sun. Misconceptions may be reinforced by textbook illustrations that exaggerate eccentricity or show an inclined view of Earth's near-circular orbit. Textbook explanations that omit multiple factors influencing seasons, that do not mesh with students' experiences, or that are erroneous, hinder scientifically valid reasoning. Studies show that many teachers share their students' misconceptions, and even when they understand basic …

Differential Cross Section Measurements For Γn→Π-P Above The First Nucleon Resonance Region, P. T. Mattione, D. S. Carman, I. I. Strakovsky, R. L. Workman, A. E. Kudryavtsev, A. Svarc, V. E. Tarasov, K. P. Adhikari, S. Adhikari, D. Adikaram, G. Charles, M. Khachatryan, A. Klein, Y. Prok, Z. W. Zhao

Physics Faculty Publications

The quasifree γd→π^-p(p) differential cross section has been measured with CLAS at photon beam energies E_γ from 0.445 to 2.510 GeV (corresponding to W from 1.311 to 2.366 GeV) for pion center-of-mass angles cosθπc.m. from -0.72 to 0.92. A correction for final state interactions has been applied to these data to extract the γn→π^-p differential cross sections. These cross sections are quoted in 8428 (E_γ,cosθπc.m.) bins, a factor of nearly 3 increase in the world statistics for this channel in this kinematic range. These new data …

Determination Of The Proton Spin Structure Functions For 0.05 < Q2 <5gev2 Using Clas, R. G. Fersch, N. Guler, P. Bosted, A. Deur, K. Griffioen, C. Keith, S E. Kuhn, R. Minehart, Y. Prok, K. P. Adhikari, S. Bültmann, S. Careccia, Gail Dodge, V. G. Lagerquist, L. B. Weinstein

Physics Faculty Publications

We present the results of our final analysis of the full data set of g^p₁ Q², the spin structure function of the proton, collected using CLAS at Jefferson Laboratory in 2000-2001. Polarized electrons with energies of 1.6, 2.5, 4.2, and 5.7 GeV were scattered from proton targets ¹⁵NH₃ dynamically polarized along the beam direction) and detected with CLAS. From the measured double spin asymmetries, we extracted virtual photon asymmetries A^p₁ and A^p₂ and spin structure functions g ^p₁ and g^p₂ over a wide kinematic range (0.05 GeV …

Measurement Of The Differential And Total Cross Sections Of The ᵧd→Kºʌ(P) Reaction Within The Resonance Region, N. Compton, C. E. Taylor, K. Hicks, P. Cole, N. Zachariou, Y. Ilieva, P. Nadel-Turonski, E. Klempt, V. A. Nikonov, A. V. Sarantsev, C. E. Hyde, M. Khachatryan, A. Klein, Y. Prok, B. Torayev, J. Zhang

Physics Faculty Publications

We report the first measurement of differential and total cross sections for the γd →K⁰ Λ(p)reaction, using data from the CLAS detector at the Thomas Jefferson National Accelerator Facility. Data collected during two separate experimental runs were studied with photon-energy coverage 0.8-3.6 GeV and 0.5-2.6 GeV, respectively. The two measurements are consistent giving confidence in the method and determination of systematic uncertainties. The cross sections are compared with predictions from the KAON-MAID theoretical model (without kaon exchange), which deviate from the data at higher W and at forward kaon angles. These data, along with previously published cross sections for …

Nucleon-Nucleon Correlations, Short-Lived Excitations, And The Quarks Within, Or Hen, Gerald A. Miller, Eli Piasetzky, Lawrence B. Weinstein

Physics Faculty Publications

This article reviews our current understanding of how the internal quark structure of a nucleon bound in nuclei differs from that of a free nucleon. The interpretation of measurements of the European Muon Collaboration (EMC) effect for valence quarks, a reduction in the deep inelastic scattering cross-section ratios for nuclei relative to deuterium, and its possible connection to nucleon-nucleon short-range correlations (SRCs) in nuclei are focused on. This review and new analysis (involving the amplitudes of non-nucleonic configurations in the nucleus) of the available experimental and theoretical evidence shows that there is a phenomenological relation between the EMC effect and …

Sola Scriptura Statuat Lex Orandi: Toward A Transcultural Theology Of Liturgy, David A. Williams

Faculty Publications

The Seventh-day Adventist church is one of the most diverse religious groups. With this diversity comes a preponderance in worship practices. Calling upon the Reformation principle, sola scriptura, the Bible alone should establish the rule for liturgy. How do we apply the Bible as the rule for liturgy, with so many worship preferences and diversity of cultures within the Adventist church? In this paper, I seek to articulate a way forward, developing a transcultural theology of liturgy to be applied in every Adventist culture, allowing room for a rich variety of local cultural contextualizations.

Target And Beam-Target Spin Asymmetries In Exclusive Pion Electroproduction For Q² > 1 Gev² . Ii. Ep→ Eπºp, Clas Collaboration, K. P. Adhikari, D. Adikaram, M. J. Amaryan, S. Bültmann, N. Guler, S E. Kuhn, A. Klein, S. Koirala, B. Torayev, J. Zhang, Z. W. Zhao

Physics Faculty Publications

Beam-target double-spin asymmetries and target single-spin asymmetries were measured for the exclusive π⁰ electroproduction reaction γ^∗p→pπ⁰, expanding an analysis of the γ^∗p→nπ⁺ reaction from the same experiment. The results were obtained from scattering of 6-GeV longitudinally polarized electrons off longitudinally polarized protons using the CEBAF Large Acceptance Spectrometer at Jefferson Laboratory. The kinematic ranges covered are 1.1 < W < 3 GeV and 1 < Q²< 6 GeV² . Results were obtained for about 5700 bins in W, Q², cos(θ^∗) , and ϕ^∗. The beam-target asymmetries were found to generally be greater than zero, with …

Isoscalar 𝜋𝜋 Scattering And The Σ Meson Resonance From Qcd, Raúl A. Briceño, Jozef J. Dudek, Robert G. Edwards, David J. Wilson

Physics Faculty Publications

We present for the first time a determination of the energy dependence of the isoscalar ππ elastic scattering phase shift within a first-principles numerical lattice approach to QCD. Hadronic correlation functions are computed including all required quark propagation diagrams, and from these the discrete spectrum of states in the finite volume defined by the lattice boundary is extracted. From the volume dependence of the spectrum, we obtain the S-wave phase shift up to the KK¯ threshold. Calculations are performed at two values of the u, d quark mass corresponding to m_π=236,391  MeV, and the resulting amplitudes …

Insco Group Seal Stamping Process Design, Austin Darling, Lincoln Follett, Connor Whitenack, Nick Laraway

Mechanical Engineering Capstone Design Projects

It is not unusual for a company to miss out on potential profits simply because they cannot produce a desired quantity with the equipment they own. In some instances, a manufacturers process is streamlined to the point where overproduction becomes a possibility. Efficient companies have the luxury of being able to meet demand quotas, stockpile product for future orders, and spend time on research and development projects. How well a system is designed can either lift a company to monopolistic power or quickly send it into bankruptcy. Businesses that rely on manufacturing products as means of revenue must stick to …

Toray End-Board Loading Station, Chris Salazar, Giovanni Grande, Tenley Chlaupek, Kyle Burbine

Mechanical Engineering Capstone Design Projects

Los Alamos National Laboratories presented team Atolla Nuclear the task of safeguarding a floating nuclear power plant. This new concept was narrowed down into protecting the spent nuclear fuel for floating nuclear reactors. The product designed was a remotely controlled flotation device for the spent nuclear fuel casks. This product, appropriately named Atolla Float, is capable of protecting the spent nuclear fuel up to twelve kilometers off of the coastline.

Atolla Float was designed capable of remotely inflating at a depth of up to one hundred meters under the surface of the ocean, the maximum depth of the ocean at …

Herox Design Competition - Boiler Buddy, Shane Kirkland, Angela Reisch, Justin Sundaram

Mechanical Engineering Capstone Design Projects

The Raminar Flow team was tasked with the completion of an entry to the Herox Fluid Systems of Tomorrow Design Challenge. This international design competition challenged participants to design and submit a new product that relates to fluid systems in a home. The product, in addition to its relation to fluid systems, has to present consumers with a significant cost savings over current commercially available alternatives (if any exist), and it must be environmentally sustainable.

To meet these design requirements, the team decided to focus on household water heating. Since most hot water heating is done with a dedicated water …

Hero-X: Emerson Air Flow Design Challenge, Reid Elleman, Michael Dana, Nicholas Harris

Mechanical Engineering Capstone Design Projects

This report will follow the development cycle as Capstone Team 12 solves the Emerson Airflow Problem. The problem was proposed by Emerson on HeroX: Incentive Competition, Challenges and Prizes forum. This problem is an open competition to any inventors who can solve the dilemma of measuring total air flow in a residential heating, ventilation and cooling system (HVAC). The solutions will be judged against a rubric given by Emerson that includes price-point, accuracy, scalability, ease of installation and ease of use in order of greatest to least importance [5]. The following report outlines the engineering process from interpreting the problem …

Amtrol Plastic Modular Pump Stand, Chris Caudle, Danny Arango, Vincent Forleo, Anthony Mcqueen

Mechanical Engineering Capstone Design Projects

Team Stand Strong has been given the task to design a plastic modular pump stand by Amtrol. The team is responsible for the design and testing of the stand. The final design report shows the steps taken by the team to prove the feasibility of the created design concept as well as build, test and redesign to achieve a final design. After research, brainstorming, and creating key criteria the team began designing possible solutions. Research conducted on competition and support from professors and sponsors guide the team.

The team works through multiple design processes to obtain a plastic modular pump …

Neptune-Benson Perlite Media Loader, Mark Farat, Ben Modica, Patrick Carroll, Ronald Beaulieu

Mechanical Engineering Capstone Design Projects

Neptune-Benson has presented the Gods of Perlite with the task of designing a device that can automate the process of transferring the filtration medium, perlite, into their Defender filtration system models. In some European countries, perlite is viewed as a hazardous material. The design will minimize the amount of human contact, allowing Neptune-Benson to investigate expanding their market into those regions. This device operates as a vacuum pneumatic conveying system that will be responsible for ensuring at least one full filter change-out of at least 45 pounds of perlite. Through the preliminary stages of the design process, communication with the …

Simuili Scoliosis Brace, Gabriella Devine, Chris Viveiros, Daniel Cross, Thomas Brey

Mechanical Engineering Capstone Design Projects

Additive manufacturing is a relatively new and innovative manufacturing process that has been emerging in recent years. Until now this process has been almost strictly used for prototyping but through the combined e orts of the members of team 17 and their sponsors at SIMULIA it will emerge in the medical field to revolutionize the treatment of scoliosis. The overall goal of this project is to be able to take a 3D external scan of a patients body and from that design and print a fully functional customized brace. The major objectives for this are to externally scan a patient …

Lab On Paper, Aaron Matarese, Luis Pimentel, Winfield Smith

Mechanical Engineering Capstone Design Projects

This final design report highlights the developments of the Lab on Paper over the past year. The goal is to redesign the Lab on Paper to be more easily manufactured and eliminate the hook effect which causes false negatives in lateral flow assays. Sponsor Labonachip, LLC desires to bring Lab on Paper to market and the easiest way to do so is to adapt it to existing manufacturing lines. By eliminating the hook effect, Lab on Paper will be more accurate and reliable than current lateral flow assays.

The Lab on Paper aims to become a universal diagnostic instrument that …

Hasbro Drone Customization And Enhancement, Chace Medeiros, Thomas Nagy, Dan Shaw, Brad Beauparlant

Mechanical Engineering Capstone Design Projects

The Game of Drones team was given the task of customizing and enhancing a new toy drone for Hasbro. The team was specifically tasked with designing custom drone attachments and accessories that more completely "gamify" the drone-flying experience. The aim of the project is to create better versions of what competitors are offering and create new, original experiences that are more engaging to a small crowd.

The design process began with the purchase of four drones in the target price range of $60-$100. The drones were then tested and compared in order to choose one as a baseline for the …

Raytheon Cable Stability, Taylor Fortier, Andrew Moreno, Louis Maroun

Mechanical Engineering Capstone Design Projects

Stable Cable has been tasked by Raytheon to create a universal, modular, vibration resistant cable management system. This design report highlights the steps taken to research, conceptualize, evaluate, and construct a working version of our product. This cable management system must be seismic zone 4 compliant and provide a serviceable solution in a small footprint. To evaluate our product’s ability to perform Stable Cable completed a cost analysis, as well running various computer simulations on CAD, Computer Aided Design, models. An prototype was also assembled to provide real world vision into the size of the product and was load and …

Hexagon Mechanized Ball Bar Fixture, Aaron Binek, Jeffrey Costa, Taylor Fields, Jackson Welsh

Mechanical Engineering Capstone Design Projects

Team nineteen was partnered with Hexagon Manufacturing Intelligence and tasked with the assignment of automating a ball bar fixture used in error mapping of coordinate measurement machines. This design report outlines the processes employed during the design by the team, with the long term goal of creating a functional prototype of the product. This semester work was done in conceptual design and analysis to meet the design specifications developed by Hexagon and Team 19. The culmination of this semesters work is presented in a Proof of concept, with the intent of fabrication and manufacture, along with redesign and optimization being …

Optimization And Redesign Of A Dual Rotary Cutter, Joseph Graziano, Joshua King, Nathan Kross, Tom O'Connor

Mechanical Engineering Capstone Design Projects

This design report records the actions taken by the Spin to Win team to optimize and redesign a cutter assembly in a dual rotary sheeter, as well as design a gear reduction in the same assembly. The optimization and redesign of the cutter system focuses on two main factors, inertia and torsional stiffness. The sponsor for this project is MAXSON Automatic Machinery.

Wear and tear on a machine and its parts could be costly or even jeopardize the integrity of the system. Spin to Win came up with a redesign that can theoretically decrease the inertia by up to 40% …