Digital Commons Network^™

Critical Shear Stress Estimates For Sunken Alberta Bitumen In An Annular Flume, Ian P. Gaudreau

Master's Theses and Capstones

Under certain environmental conditions and depending on its specific gravity, spilled oil has the ability to sink to the bottom of a water body (e.g., lake, river, ocean) (i.e., sunken oil). Once there, it can be difficult to predict the sunken oil’s fate and transport, making response efforts challenging. The Office of Response and Restoration (ORR) of the National Oceanic and Atmospheric Administration (NOAA) currently uses mathematical models in an attempt to better predict the movement of spilled oil. However, mathematical models cannot be simulative of the predicted trajectory if the physical or chemical properties of the oil are unknown, …

Application Of Rasch Analysis In The Development And Psychometric Evaluation Of Dental Undergraduates Preparedness Assessment Scale, K. Ali, A. Slade, E. J. Kay, D. Zahra, A. Chatterjee, C. Tredwin

Peninsula Dental School

No abstract provided.

Model Fit Diagnostics For Hidden Markov Models, Safaa K. Kadhem

School of Engineering, Computing and Mathematics Theses

Hidden Markov models (HMMs) are an efficient tool to describe and model the underlying behaviour of many phenomena. HMMs assume that the observed data are generated independently from a parametric distribution, conditional on an unobserved process that satisfies the Markov property. The model selection or determining the number of hidden states for these models is an important issue which represents the main interest of this thesis. Applying likelihood-based criteria for HMMs is a challenging task as the likelihood function of these models is not available in a closed form. Using the data augmentation approach, we derive two forms of the …

A New Framework And Learning Tool To Enhance The Usability Of Software, Fahad Almansour

School of Engineering, Computing and Mathematics Theses

Due to technological developments, apps (mobile applications) and web-based applications are now used daily by millions of people worldwide. Accordingly, such applications need to be usable by all groups of users, regardless of individual attributes. Thus, software usability measurement is fundamental metric that needs to be evaluated in order to assess software efficiency, effectiveness, learnability and user satisfaction. Consequently, a new approach is required that both educates software novice developers in software evaluation methods and promotes the use of usability evaluation methods to create usable products. This research devised a development framework and learning tool in order to enhance overall …

Instability In Nonequilibrium And Nonthermal Plasma Discharges, Rajib Mahamud

Theses and Dissertations

Microplasma, or plasma in micron scale interelectrode separation, is an effective way to attain nonthermal plasma operation at atmospheric and higher pressure. However, the small size causes the effect of other operating parameters to be crucial in stable operation and make the microplasma discharge system to be susceptible to instabilities. The two major instabilities that are commonly observed are the instability in the negative differential resistance (NDR) region and the Striations or the ionization waves. The physics and reaction kinetics of NDR instability for high pressure system is not well understood. This study pursues both experimental characterization and development of …

Modeling Of Tow Wrinkling In Automated Fiber Placement Based On Geometrical Considerations, Roudy Wehbe

Theses and Dissertations

Automated manufacturing of fiber reinforced composite structures via numerically controlled hardware yields parts with increased accuracy and repeatability as compared to hand-layup parts. Automated fiber placement (AFP) is one such process in which structures or parts are built by adding bands of prescribed number of tows or slit-tape with prescribed width using robotic machine heads over 3D surfaces following prescribed paths. Despite the improved accuracy, different types of defects or manufacturing features arise during fabrication. These defects can be due to geometrical features, materials, and process planning parameters and are detected in the form of wrinkling, tow twist, tow folding, …

The Relationship Between Gender Stereotypes And Academic Performance For Rural Eighth Grade Students: A Mixed Methods Ethnographic Case Study, Elizabeth Anne Royal Witte

Theses and Dissertations

Through this mixed methods ethnographic case study, the subject of gender stereotypes for middle school students, and its relationship to academic performance was investigated. Specifically, the research focused on Albert Bandura’s (1977) Social Learning Theory, gender stereotypes, and how educational institutions, peer relationships, and parental influences may dictate gender norms as they relate to academic success. It also attempted to evaluate the relationship between the issue of gender stereotypes and current experiences in a rural American middle school that led to the recurring issue of the educational gender gap and the underperformance of male students. The purpose of the study …

The Influence Of Testing And Content Presentation Method On Mandatory Federal Employee Training, Corey Patrick Boswell

Theses and Dissertations

A substantial amount of evidence exists suggesting that including tests as part of learning events can promote greater long-term retention (known as the “testing effect”). In the current study, the testing effect was analyzed in the context of mandatory federal legal training. The classic information processing perspective provided a theoretical backdrop for the experimental design. Participants (N = 383) received specialized training content through one of three modalities (text-, audio-, or video-based). Additionally, instructional style (test vs. no-test) was manipulated in conjunction with content presentation method. It was predicted that participants would perform better on the final assessment in conditions …

Association Of Provider Communication And Inpatient Hospital Readmissions, Jeremy Dean Faulkenburg

Theses and Dissertations

Introduction: Inpatient hospital readmission rates represent an important clinical and economic problem. Clinical interventions have shown significant decreases in preventable readmissions, but are costly to implement. Another approach is to better equip patients with the knowledge and resources to manage their care after discharge. Patients receive instruction from both nurses and physicians, as well as information pertaining to post-discharge care and instructions for care while at home. This study examines the association between provider communication and inpatient hospital readmissions.

Methods: This study used survey data from the 2013 and 2014 Hospital Consumer Assessment of Healthcare Providers and Systems (HCAHPS). The …

Coordination Chemistry Of Carboranes And Furan Ligands On Transition Metal Cluster Complexes, Emmanuel Joseph Kiprotich

Theses and Dissertations

Chapter 1 presents the most relevant literature in the field of carborane chemistry. The focus is on icosahedral carboranes and the different methods of boron or carbon atoms substitution and functionalization. The direct addition of transition metal to boron atoms is covered in detail as well as strategies for cage opening of icosahedral carboranes.

Chapter 2 reports the preparation of some of the first polynuclear metal carbonyl cluster complexes where the closo-carborane cage: o-C₂B₁₀H₁₂ serves as a ligand on the face of one (Os₃(CO)₉(µ₃-4,5,9-C₂B₁₀H_{10 …}

Disinfection By-Products: Formation In Pool Water And The Role Of Iodinated Medical Imaging Compounds As A Potential Precursor In The Formation Of Iodo-Dbps, Christina Marie Joseph

Theses and Dissertations

Disinfection by-products (DBPs) are the unintended consequence of using chemical disinfectants to kill pathogens in water. 1-11 They are formed from the reaction between disinfectants and natural organic matter (NOM), anthropogenic contaminants, and bromide/iodide present in the raw source water. DBPs are cause for concern because studies have found them to be toxic.11-16 This research focuses on identifying and studying the formation of DBPs. Specifically, the presence of DBPs in chlorinated pool water and tap water from Barcelona, Spain was studied to better understand which DBPs are formed in the pool as compared to those that enter the pool from …

Effects Of Language For Learning On Young Children With Autism Spectrum Disorder, Diana M. Smith

Theses and Dissertations

Language for Learning (LL) is an oral language curriculum that uses Direct Instruction (DI) methodology. DI is well researched, but only limited studies exists on the use of LL with children with autism spectrum disorder (ASD). This study used a multiple baseline research design, across four, four-year-old participants, to measure the effects of LL on the language development of young children with ASD. This study also measured the generalization of learned skills to the narrative language of the participants. Finally, changes in the participants language microstructure were analyzed throughout the study. A researcher-created acquisition probe was used to measure language …

Evaluation Of Multicarrier Air Interfaces In The Presence Of Interference For L-Band And C-Band Air-Ground Communications, Hosseinali Jamal

Theses and Dissertations

The use of aeronautical vehicles and systems is continuously growing, and this means current aeronautical communication systems, particularly those operating in the very high frequency (VHF) aviation band, will suffer from severe congestion in some regions of the world. For example, it is estimated that air-to-ground (AG) communication traffic density will at least double by 2035 over that in 2012, based on the most-likely growth scenario for Europe. This traffic growth (worldwide) has led civil aviation authorities such as the FAA in the USA, and EuroControl in Europe, to jointly explore development of future communication infrastructures (FCI). According to international …

Elucidation Of Protein Interactions And The Re-Tuning Of Porphyrin Electronics For Hydroxylases, Steven Charles Ratigan

Theses and Dissertations

Non-Ribosomal Peptide Synthetases (NRPSs) and their exogenous tailoring partners have been heavily studied but not in the context of non-cognate systems. Orf78, a dinuclear iron β-hydroxylase from the lysobacter pathway and homologous to CmlA from the chloramphenicol pathway, is used to test affinities for one native and two non-native T-domains. Results indicate that there is enough difference between Type I and Type II NRPS systems to disfavor common recognition motifs. Additionally, the β-hydroxylase P450sky, from the skyllamycin biosynthetic pathway, is used in conjunction with the NRPS ATdomain NikP1AT from the nikkomycin biosynthetic pathway, in lieu of the homolog P450nikQ. The …

On The Microstructural Behavior Of Pure Magnesium Under Various Strain Rates, Peter Malchow

Theses and Dissertations

An investigation into the localized microstructural response of pure magnesium under both quasi-static and dynamic loading is presented in the form of several experimental works. The meso-scale events were examined using Digital Image Correlation techniques, which provide a methodology for mapping the in-situ full-field material strain behavior.

Firstly, an analysis of the grain boundary activity specifically under dynamic conditions at high magnification is discussed. An area of interest in the region of multiple grain boundaries and triple junctions is selected for characterizing the evolution of the strain and local rotation. This is followed by a study experimentally verifying the causes …

Pedagogy Of The Transplanted: A Study Of Selected First-Year Jamaican Immigrant Elementary School Teachers And Their Perspectives On South Carolina’S Curriculum Processes, Claudia Fletcher-Lambert

Theses and Dissertations

The study explores the experiences of four first-year Jamaican immigrant teachers in rural southern South Carolina regarding their descriptions of the experiences and the researcher’s observations. The main research question was concerned with first-year Jamaican immigrant elementary school teachers’ experiences as they navigate the curriculum landscape in South Carolina. The inquiry engages a qualitative research design.

Interviews, observations, and artifacts were engaged to collect data. These data were analyzed deductively and inductively through a process of content analysis. These data findings in the study covered four dominant themes these included immigrant teachers’ strengths, challenges, changes, and navigation strategies. The data …

Investigate Genomic 3d Structure Using Deep Neural Network, Yan Zhang

Theses and Dissertations

The 3D structures of the chromosomes play fundamental roles in essential cellular functions, e.g., gene regulation, gene expression, evolution and Hi-C technique provides the interaction density between loci on chromosomes. In this dissertation, we developed multiple algorithms, focusing the deep learning approach, to study the Hi-C datasets and the genomic 3D structures.

Building 3D structure of the genome one of the most critical purpose of the Hi-C technique. Recently, several approaches have been developed to reconstruct the 3D model of the chromosomes from HiC data. However, all of the methods are based on a particular mathematical model and lack of …

An Investigative Study Measuring Self-Reported Metacognitive Habits Among Collegiate Piano Majors, Steven Phillip Brundage

Theses and Dissertations

The purpose of this study was to investigate self-reported metacognitive habits among collegiate piano majors. It examined the degree to which participants comprehend and employ practice strategies, recognize their own strengths and weaknesses in learning and performing, accurately predict a performance outcome, and self-evaluate following a performance. A total of twelve (N = 12) participants, six (N = 6) undergraduate and six (N = 6) graduate piano majors, enrolled in applied lessons at the University of South Carolina School of Music volunteered to participate in this study. Participants completed a pretest questionnaire that measured their own metacognitive skills, performed and …

Creating Equitable Access Pathways For All Students In South Carolina? A Study Of Sc International Baccalaureate Diploma Programs, Diane D. Padula

Theses and Dissertations

This case study adds insight to the idea of equitable access as it relates to advanced coursework available to students in public high schools in South Carolina. The International Baccalaureate Diploma Program (IBDP) has become a viable choice since secondary-level magnet programs in SC have taken root for over thirty years. The IBDP originally developed in SC to attract the global elite, however in the recent decade, the IBDP has morphed into a program meant for all students. The concept of IB for All is marketed as a college readiness program within South Carolina IBDP schools. Access is multidimensional; it …

Chemical Sensing In Harsh Environments By Multivariate Optical Computing, Christopher Michael Jones

Theses and Dissertations

Multivariate optical computing (MOC) is a compressive sensing technique for which an analyte concentration is detected in an interfering mixture by direct detector output. The detector measures the dot product of a linear regression vector with a sample spectrum, as an analog optical computation. The computation is accomplished with the multivariate optical element (MOE), to which the optical regression vector is encoded as a transmission pattern. As a spectrum of light emanates from a sample and passes through the MOE, the dot product naturally occurs when light strikes the detector. The MOC platform allows a simple, robust, and direct measurement …

Life After Graduation: Exploring The Utility Of A College And Career Research Project In Defining Students’ Post-High School Goals, Ashley E. Bowers

Theses and Dissertations

In order to assist students with their digital research skills while simultaneously allowing them to research and explore college and career options, a Project-Based Learning (PBL) assignment was incorporated into the secondary English classroom. This served multiple purposes: providing students guidance and support as they determine their future college and career goals, meeting several of the South Carolina 9-12 English/Language Arts standards, and increasing students’ College and Career Readiness. The site for this quantitative action research study was English 3 classes in a large, rural high school in the Charleston, South Carolina area. Quantitative, statistical data was collected from a …

Metal-Organic Frameworks: A Versatile Platform For Light Harvesting And Energy Transfer, Derek E. Williams

Theses and Dissertations

The global energy demand is undoubtedly rising at an alarming rate, and as a result, humanity faces the problem of finding alternative energy supplies. Approximately 80 percent of the world’s energy currently comes from fossil fuels, and only a small fraction, 10 percent, from renewable energy sources. The study of energy transfer (ET) processes is a rapidly developing area of interest due to the necessity for more efficient photovoltaic devices, which are crucial to meet the growing energy demand. A promising approach to further advance organic photovoltaics is to precisely arrange many lightharvesting chromophores (e.g., porphyrin derivatives), attainable through a …

Fluorescence Polarization Measurements To Probe Alignment Of A Bithiophene Dye In One-Dimensional Channels Of Self-Assembled Phenylethynylene Bis-Urea Macrocycle Crystals, Preecha Kittikhunnatham

Theses and Dissertations

This thesis describes the use of polarized fluorescence microscopy to directly probe guest molecule orientation in bis-urea macrocycle crystals. These macrocycles assemble to afford one-dimensional (1D) microchannels ∼9 Å in diameter that have previously been shown to exhibit normal Fickian diffusion and induce selective reactivity among the confined guest molecules. In the present work, we take advantage of the quasi-1D morphology of fiber-like microcrystals with the extended dimension corresponding to the channel axis to measure excitation and emission polarization values for a bithiophene guest. Guest fluorescence is shown to be polarized along the fiber axis with emission polarization values up …

2017-2018 Lindenwood University Graduate Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University Graduate Course Catalog

2017-2018 Lindenwood University Accelerated Degree Program Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University Accelerated Degree Program Course Catalog

2017-2018 Lindenwood University-Belleville Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University-Belleville Course Catalog

2017-2018 Lindenwood University Undergraduate Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University Undergraduate Course Catalog

Mobile Learning In Early Childhood Education: A School-University Partnership Model, Serena Davie

Theses

Mobile learning (mLearning) devices are ideal for 21st century learning. mLearning devices are light and, therefore, mobile so that young children can use them anywhere. Examples of mLearning devices are tablet computers, programmable robots such as Bee-Bots and robotic Lego. The term 21st century learning is used around the world and includes the skills of collaboration, communication, new literacy, creativity, critical thinking, and problem-solving. New literacy has emerged because of new technologies and being literate in the 21st century now includes being digitally literate. However, mLearning is not widely used in early childhood education despite the fact that schools are …

Examining The Role Of Emotional Intelligence In The Work And Life Balance Of Foster Care Workers, Pamela Applewhite Applewhite

Walden Dissertations and Doctoral Studies

Foster care workers are an important part of the social service system, as they are the first line of support for children without families or who have been subjected to tragic events leading to their need for foster care. Foster care workers often experience work-life boundary issues due to the emotional nature of their work. The purpose of this quantitative study was to examine the relationship between (a) emotional intelligence and absenteeism and (b) emotional intelligence and work-life balance with foster care workers. Data was collected from foster care workers in the state of South Carolina employed with the Department …

Soil Hydraulic Property Estimation Under Major Land-Uses In The Shawnee Hills, Trinity Joseph Baker

Theses and Dissertations--Plant and Soil Sciences

The ability to map soil moisture is becoming more important with changing climates and modeling these effects depends on reliable estimations of hydrologic soil properties under different land managements. This study: 1) tests the application of existing soil hydraulic property estimation methods against in-situ values of six catenas under two covers (forest and grass); 2) validate Random Forest Algorithm (RF) estimates informed from the six catenas on two separate catenas; 3) identify Rapid Carbon Assessment (RaCA) sites within the Shawnee Hills Region that represent different land-uses (Crop, Conservation Reserve Program (CRP), Forest, and Pasture); 4) apply RF learning tree informed …