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Hijacking The Syrian Revolution, Iman Khairat Nanoua

Graduate Program in International Studies Theses & Dissertations

The civil war in Syria (started in March 2011) marks one of the greatest tragedies in the Middle East during the twenty-first century, and a fear that its destructive consequences may affect the entire region. The Syrian crisis coincides with the democratic wave that shaped the Arab Spring. The thesis will discuss the decision-making system and the primary actors in the Syrian crisis within the framework of three distinct phases. Each phase contributed to the hijacking of the peaceful demonstrations that sought freedom in a democratic state and of the dramatic developments on the Syrian stage. The first stage of …

Self-Perception On Women's Fashion Decisions, Shannon Cokes

OTS Master's Level Projects & Papers

The problem of this study was to determine if a women's self-perception affects her fashion choices in order to direct marketing strategies toward the brands she wears.

Assessment Of The Transition From Pinyin To Hanzi In University Level Introductory Chinese Language Courses, Ronnie Hess

OTS Master's Level Projects & Papers

The purpose of this study was to assess how Chinese language instructors transition from pinyin to hanzi when teaching Chinese as a second language to adult learners in a university setting.

Impact Of The Post-9/11 G.I. Bill: An Examination Of Retention Of First Year Students In The Hampton Roads Area, Kim B. Sibson

Educational Leadership & Workforce Development Theses & Dissertations

The Post-9/11 G.I. Bill has had a tremendous impact on higher education institutions (HEI) across the country. As of 2011, the Veterans Administration (VA) had issued G.I. Bill payments to almost 500,000 veterans. This research examines the effect of the Post-9/11 G.I. Bill on student retention in different types of HEIs in the Hampton Roads region of Southeastern Virginia, an area that has a high number of military and military-affiliated residents. Ex post facto data from various institutions have been compared, with a public university, a for-profit college, and a two-year public community college to examine the retention rates of …

Effective Cfrp Retrofitting Schemes For Prestressed Concrete Beams, Herish Abdullah Hussein

Civil & Environmental Engineering Theses & Dissertations

This thesis presents a detailed theoretical study of a number of retrofitting schemes for prestressed concrete beams using carbon fiber reinforced polymer (CFRP) sheets to increase flexural strength and ductility. A simply-supported beam subjected to a gradually increasing uniformly distributed load is adopted for the study with a variety of CFRP retrofiring schemes. Three different types of beam cross sections are included for quantifying the influence of CFRP retrofitting when used in high compression regions in addition to CFRP use in high tension areas. To achieve this goal, nonlinear moment curvature relations are developed and coupled with a finite-difference solution …

A Molecular Framework Phylogeny For Ptilotus (Amaranthaceae), Timothy A. Hammer

Biological Sciences Theses & Dissertations

Ptilotus (Amaranthaceae) is an Australian genus with over 100 species, most of which occur in arid Western Australia. Ptilotus has been a taxonomically difficult genus; despite rigorous morphological studies into the genus over many years, previous workers have found it difficult to delimit infrageneric groups due to inconsistent morphological variation. With the goal to establish a phylogenetic framework for the genus, 100 taxa were sampled, including 87 Ptilotus spp., and the ITS nrDNA and matK cpDNA were sequenced. The phylogeny was reconstructed using Bayesian, maximum likelihood and maximum parsimony analyses on separate and concatenated datasets. Morphological characters were assessed and …

Predictors Patterns And Processes Of Extinction Risk In Porgies And Seabreams (Family: Sparidae), Mia Theresa B. Conteros

Biological Sciences Theses & Dissertations

A variety of human-induced changes are having profound impacts on the marine environment, and no area on the planet remains unaffected by the detrimental effects of our activities. These stressors can potentially lead to synergistic effects, causing accelerated biodiversity loss and diminished ecosystem functioning. Identification and understanding of the factors that drive species to heightened risk of extinction are important goals in conservation.

The Sparidae are commercially important and ecologically complex marine fishes; global extinction risk assessments using the IUCN Red List of Threatened Species methodology show that 9% (13 species) have increased vulnerability to population declines from intense fishing …

Data Completion Methods For Improved Developmental Stage Annotation Of Drosophila Embryos In Images, Chitsanu Janyalikit

Electrical & Computer Engineering Theses & Dissertations

Drosophila melanogaster is a dominant model organism for studying the function of animal genes in initial stages of embryogenesis. Usually, images containing Drosophila gene expression patterns are captured at different developmental stages to study the interconnection of animal genes. To achieve most biologically meaningful results, gene expression images from a similar stage should be compared. Currently, biologists manually classify embryos in images into different stages, which is time intensive and infeasible for current massively produced gene expression images. Therefore, there is a need to develop an automatic system for the annotation.

Gene expression information in embryo images usually appears as …

Study Of Polyaniline For Use In An Organic Field Effect Transistor, Thomas Martin Sprinkle

Chemistry & Biochemistry Theses & Dissertations

Polyaniline's emeraldine base form was synthesized via chemical polymerization in HCl acidic media utilizing ammonium persulfate as the oxidant. Synthesis was done at room temperature and -30 'C and characterized for differences by X-ray diffraction, thermogravimetric analysis, and differential scanning calorimetry. Methanol soxhlet extraction was done to increase number average molecular weight from 77,400 to 81,000 and decrease the poly dispersity index from 3.82 to 2.14. Films were cast using N, N'- Dimethylpropyleneurea and N-Methylpyrrolidone and showed poor mechanical properties upon acidic doping.

Cyclic voltammetry was done with HC1 as the acidic media and an ITO coated slide as the …

Knowledge, Attitudes, And Barriers Toward Evidence-Based Practice Among Oral Health Professionals In Saudi Arabia, Sukainah Abdulwahab Almeedani

Dental Hygiene Theses & Dissertations

Evidence -based decision making enables oral health professionals to make clinical practice decisions by utilizing the best available and most current scientific evidence. In combination with patients' values and circumstances, oral health professionals' experience and judgment are equally considered with scientific evidence in evidence-based decision making. The purpose of this study was to explore the knowledge and attitudes of evidence-based practice (EBP) among oral health professionals in Saudi Arabia and to determine the obstacles and barriers to implementation. Using a descriptive survey design, classrooms and clinics of 258 oral healthcare professionals were randomly selected from King Saud University, College of …

Predation Thresholds In Marine Microbial Communities Applied To Environments With Low Prey Abundances, Bonnie Bailey

OES Theses and Dissertations

Prokaryotes (Bacteria and Archaea) comprise the largest component of biomass in the world's oceans. Their abundances are controlled by resource availability, viral infections and protist grazing. Many pico- and nano-eukaryotic predators grow almost as quickly as their prey, and greatly increase in numbers as soon as their prey do, leading in tum to depletion in prokaryotes. It is still unclear however, as to what extent microbial predators are able to feed in low prey environments, most prominently in the largest biome on Earth, the deep sea (below l 000 m depth). It has been hypothesized that in low prey environments, …

Engineering Design: A Cognitive Process Approach, Greg Joseph Strimel

STEMPS Theses & Dissertations

The intent of this dissertation was to identify the cognitive processes used by advanced pre-engineering students to solve complex engineering design problems. Students in technology and engineering education classrooms are often taught to use an ideal engineering design process that has been generated mostly by educators and curriculum developers. However, the review of literature showed that it is unclear as to how advanced pre-engineering students cognitively navigate solving a complex and multifaceted problem from beginning to end. Additionally, it was unclear how a student thinks and acts throughout their design process and how this affects the viability of their solution. …

Camera Viewpoint Invariant Vehicular Traffic Segmentation And Classification, Jeffrey B. Flora

Electrical & Computer Engineering Theses & Dissertations

The goal of this intelligent transportation systems work is to develop a computer vision method that is view angle independent for segmenting and classifying vehicular traffic on highway systems. In order to achieve this goal, this work implements an algorithm for vehicle segmentation, feature extraction, and classification using the existing Virginia Department of Transportation (VDOT) infrastructure on networked traffic cameras. The VDOT traffic video is analyzed for vehicle detection and segmentation using an adaptive Gaussian mixture model algorithm. Speed estimation is performed using a single camera calibration. Size and shape features from morphological properties and texture features from histogram of …

An Examination Of Teachers' Writing Self-Efficacy, First-Grade Students' Attitudes And Self-Efficacy In Writing, And Students' Writing Behaviors, Julie Bridget Mary Dashiell

Theses and Dissertations in Early Childhood Education

Teachers' self-efficacy has been demonstrated to be an important construct linked to teacher competence (Goddard, Hoy, & Woolfolk Hoy, 2000; Graham & Perin, 2007). However, little is known about how teachers think about writing, particularly as it relates to their writing instruction and to writing tasks they assign to their young students. The purpose of this multiple methods inquiry was to explore teachers' self-efficacy beliefs and orientations about writing and to examine if these factors were connected to their writing instruction. This study also aimed to examine if students' self-efficacy and attitudes towards writing are connected to their classroom writing …

Simulation Studies Of Organic Solar Cell Structure And Morphology On The Device Efficiency, Satish Kumar Reddy Kota

Electrical & Computer Engineering Theses & Dissertations

Solar cells based on organic materials offer several advantages over the traditional solar cells made with inorganic materials. These include a lower impact on nature, smaller weight, the avoidance of cleanrooms for their production, their flexibility which makes it possible to wrap or coat them on objects with varying shapes and geometries, and most significantly their ability to produce electricity in diffuse'd light which is a distinct advantage over conventional solar cells. Organic solar cells have their own disadvantage of very low efficiencies as compared to inorganic solar cells. The morphology and structure of the organic solar cells plays a …

Disaster Preparedness & Response: A Survey Of U.S. Dental Hygienists, Brenda Tallon Bradshaw

Dental Hygiene Theses & Dissertations

Purpose: The purpose of this study was to determine dental hygienists' interests, formal education, views, comfort levels, and intentions for becoming involved in disaster preparedness and response as measured by a 21-item survey entitled "Victim Identification for Disaster Preparedness & Response: A Survey of Dental Hygienists". Methods: A nonprobability convenience sample (n=400) was recruited for an online survey. Data was analyzed for statistical significance using descriptive statistics, chisquare goodness-of-fit tests, a Mann-Whitney U test, and a paired-samples t-test. Similar themes were identified and categorized from open-ended questions. Results: A response rate of 83.5% (n=334) was attained. Regardless of years …

Emergency Diesel-Electric Generator Set Maintenance And Test Periodicity, Stephen John Fehr

Engineering Management & Systems Engineering Theses & Dissertations

Manufacturer and industry recommendations vary considerably for maintenance and tests of emergency diesel-electric generator sets supporting critical operations power systems facilities. There is little consistency among sets of similar technology, and manufacturers and their representatives often provide contradictory guidance. As a result, periodicity of emergency diesel-electric generator set maintenance and tests varies considerably in practice. This work proposes and tests a research and analysis framework to develop parametric regression survival models of modern diesel-electric generator sets in emergency standby duty as a function of maintenance periodicity, test periodicity, and other predictors. Within this framework, predictors are developed from common maintenance …

Regulatory Capture, The Chesapeake Bay, And Hampton Roads: What's On Your Plate, Ronnie David Gannon

Institute for the Humanities Theses

The Chesapeake Bay and its 64,000 square mile watershed are both severely impacted from excessive amounts of nutrient pollution, which contributes to a growing presence of dead zones in the Bay. What causes nutrient pollution? What are dead zones? In addition, many of the Bay's commercially valuable species of marine life have been/ are overexploited to the point of collapse / verge of collapse. Despite all of these facts, management agencies continue to weakly enforce regulations. Why?

Not to mention, much of the Bay's marine life is unsustainably caught in the contaminated waters of Hampton Roads. How, and for what? …

The Effectiveness Of Motivational Interviewing On Intimate Partner Violence Clients, Chelsea Drake

Sociology & Criminal Justice Theses & Dissertations

The criminal justice response to perpetrators of intimate partner violence (IPV) is often a rehabilitative group treatment called Batterers Intervention Programs (Bl). This thesis assesses the effects of motivational interviewing (Ml) on clients ordered to local probation for IPV. Records were collected on IPV offenders enrolled in BI, within a small city in the Southeast Criminal Justice Agency. The pre-MI data were gathered from 2006, and post-MI data from 2007-2008 after the implementation of Ml. This thesis focuses on the use of MI as an intervention to enhance clients' motivation to change. This research is guided by questions that involve …

The Role Of Chemical Attractants In The Use Of Tick Traps For Life Stages Of Tick Species Ixodes Scapularis, Dermacentor Variabilis And Amblyomma Maculatum, Pamela C. Kelman

Biological Sciences Theses & Dissertations

Amblyomma maculatum, Ixodes scapularis and Dermacentor variabilis are three of the hard-bodied ticks found in the United States. This study explored three aspects of the appetence process of these tick species: attraction, desiccation survival, and locomotive activity. The first portion of this work was to improve one of the standard methods used for collecting ticks from the environment, the tick trap. To determine the attractants needed to capture all life stages of the three chosen species of ticks in the field using tick traps, a series of experiments were conducted using laboratory-reared larval, nymphal and adult A. maculatum, I. scapularis …

Discretized Agent-Based Model Of Infectious Disease Spread That Uses Contact Probability, Tyrell L. Gardner

Computational Modeling & Simulation Engineering Theses & Dissertations

This study uses contact probability in an agent-based model to simulate the spread of an infectious disease. In order to perform the study, the agent-based model must first be discretized into events. Each agent in the model is given its own infectious disease state machine taken from the Susceptible-Exposed-Infected-Recovered (SEIR) model. The agents move between squares in a grid environment where each square represents a group. Groups have a contact probability as an attribute that is used to predict whether an agent comes in close contact with another agent. The transitions between the states in the SEIR model are easily …

Crustal Accretion And Mantle Geodynamics At Microplates: Constraints From Gravity Analysis And Numerical Modeling, Katherine Ames

OES Theses and Dissertations

This study investigates crustal accretion and mantle geodynamics at microplates using mantle Bouguer anomaly (MBA) gravity calculations and exploratory numerical models. The Easter and Juan Fernandez microplates are located in the eastern Pacific Ocean along the Pacific, Nazca, and Antarctic plate boundaries. Both microplates formed 3-5 Ma and they are currently rotating clockwise at 15° myr^-1 and 9° myr^-1,respectively [ e.g., Searle et al., 1993]. The study area also encompasses the Easter /Salas y Gomez mantle plume located near the Easter microplate. Both microplates show a difference in average MBA between their west and east ridges, with …

Numerical Studies Of The A6 Relativistic Magnetron Using Particle-In-Cell Simulations, Vineetha Jujjavarapu

Electrical & Computer Engineering Theses & Dissertations

The magnetron became a major component in radar systems around the time of the World War II. More recent radar techniques require short microwave pulses (with nanosecond pulse-widths for ultra wideband operations) and high peak power in the Giga-Watt range. In order to achieve these specifications for the military, the magnetron needs to have both a fast start and the rapid growth rate of oscillations in order to serve as a microwave source for the short-pulse applications. These two factors depend on the geometry of the cathode. Other requirements include high conversion efficiency and low leakage current (in order to …

The Role Of Leader Support For Safety Within The Leader Justice-Safety Performance Relationship, Benjamin R. Kaufman

Psychology Theses & Dissertations

Research indicates that leadership is a potent antecedent of safety performance and outcomes. Specifically, quality of leadership has been identified as a critical target for occupational safety research. The current studies focused on employee perceptions of leader justice, operationalized in general (Study 1) and safety-specific contexts (Study 2), and leader support for safety, and investigated their interactions in predicting safety performance. Only one published study has explored the direct impact of leader justice on safety and no previous research has contextualized leader justice in safety-specific terms. It was postulated that general and safety-specific leader justices and support for safety would …

U.S. - Asean Organized Crime Cooperation As Part Of Washington's Rebalancing Policy Toward The Asia-Pacific, Tuan Anh Luc

Graduate Program in International Studies Theses & Dissertations

This research addresses the reasons why the United States of America (U.S.) has been involving in the effort of the Association of Southeast Asian Nations (ASEAN) to combat transnational organized crime. The author argues that Washington has been doing so because: first, it wants to prevent and suppress negative influences of Southeast Asian organized crime and protect national interests; second, it wants to increase regional capabilities, sometimes at the Association's request, and narrow differences so as to effectively deal with transnational organized crime; and third, it wants to justify its presence in the region and pave the way …

Effectiveness Of The Near Miss Safety Program Relative To The Total Number Of Recordable Accidents In A Manufacturing Facility, Kristen Templeton

OTS Master's Level Projects & Papers

The problem of this study was to determine if the implementation of the Near Miss safety program at Delta Star, Inc. reduced the number of recordable accidents.

Relationship Between Senior-Level Student Absences And Class Rankings, Stacie Davis

OTS Master's Level Projects & Papers

The problem of this study was to examine the effect of senior-level student absences on class ranking as measured by GPA.

Utilizing The Technology Acceptance Model To Predict System Use Of An Interactive Behavior Change Technology To Deliver Virtual Diabetes Health Education, Koren Sher'keyer Goodman

Health Services Research Dissertations

Diabetes is expected to affect more than 21% of the U.S. adult population by the year 2050 (Boyle, Thompson, Gregg, Barker, & Williamson, 2010). What is important to understand about diabetes is that there are safe, effective non-pharmaceutical lifestyle modifications and pharmaceutical treatment options that can prevent and delay the onset of complications. Telehealth efforts are practical solutions increasingly used in the health services delivery model to improve self-care management practices among patients with multiple chronic conditions (Davis, Hitch, Salaam, Herman, Zimmer-Galler, & Mayer-Davis, 2010; Eng, Gustafson, Henderson, Jimison, & Patrick, 1999; Fitzner & Moss, 2013; Gruman, 2011; Lin, 1999; …

An Empirical Examination Of The Moderators Of Direct Versus Indirect Comparative Advertising, Chun-Kai Hsu

Theses and Dissertations in Business Administration

This research examines the relative effectiveness of different kinds of comparative advertising. The effects of direct and indirect advertising are discussed and empirically tested. Extant research focuses on the differential effects of comparative and non-comparative advertising. However, with the growing popularity of comparative advertising in recent years, it becomes crucial to examine different kinds of comparative advertisements more closely to provide guidelines to marketing managers in the application of comparative advertising. In the marketing literature, very little has been known about how advertising-specific moderators may influence the effectiveness of direct and indirect comparative advertising. In this dissertation, different advertising-specific moderators …

Three Essays On The Enterprise Strategy For Multinational Firms, Veselina Plamenova Vracheva

Theses and Dissertations in Business Administration

The enterprise strategy (ES) of the firm is the overarching organizational strategy which reflects the firm's degree of integration with society. It asks, "What do we stand for?" Very little is known about the ES; however, it is an important construct which can deepen our understanding of the stakeholder management process and the firm's long-term performance. Unlike much previous ES research, this three-essay dissertation examines both the nature of and the antecedents for ES in a cross-national setting.

The introductory essay offers a conceptual model describing the organizational identity orientation effects on the multinational enterprise's (MNE) ES. Additionally, it shows …