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Statistical Evaluation Of Randomly Acquired Characteristics On Outsoles With Implications Regarding Chance Co-Occurrence And Spatial Randomness, Nicole Richetelli

Graduate Theses, Dissertations, and Problem Reports (ETD)

Footwear evidence holds tremendous forensic value, owing to its ability to formulate linkages between victims, suspects and scenes. Naturally, the strength of these linkages is a function of the perceived clarity, quality and rarity of class, subclass and randomly acquired characteristics (RACs), which are the fundamental outsole features used to formulate source associations. In order to reach a conclusion when performing a footwear comparison, forensic examiners must assign value to the observed similarities and differences that exist between questioned crime scene and test impressions. Embedded within this process is an evaluation of the random association between unrelated shoes as a …

Three Essays On Health Economics And Policy Evaluation, Shishir Shakya

Graduate Theses, Dissertations, and Problem Reports (ETD)

This dissertation consists of three essays on the U.S. Health care policy. Each paragraph below refers to the three abstracts for the three chapters in this dissertation, respectively. I provide quantitative evidence on how much Prescription Drug Monitoring Programs (PDMPs) affects the retail opioid prescribing behaviors. Using the American Community Survey (ACS), I retrieve county-level high dimensional panel data set from 2010 to 2017. I employ three separate identification strategies: difference-in-difference, double selection post-LASSO, and spatial difference-in-difference. I compare how the retail opioid prescribing behaviors of counties, that are mandatory for prescribers to check the PDMP before prescribing controlled substances …

Evolution Of Extreme Continental Saline Environments: A Sedimentological Investigation Of Permo-Triassic Redbeds And Evaporites In Northern Ireland And Kansas, Anna Sofia S. Andeskie

Graduate Theses, Dissertations, and Problem Reports (ETD)

The Permo-Triassic was a time of extreme environments, unusually warm and arid climates, and biotic crises. This study investigates Pangean environments and climate leading to extreme acid saline lake systems represented by the Permian Nippewalla Group of Kansas and the Triassic Mercia Mudstone Group of Northern Ireland. Sedimentological observations of the underlying rocks, the Permian Hutchinson Salt Member of Kansas and the Permian Belfast Harbour Evaporite Formation of Northern Ireland, help to understand trends in environmental and climatic conditions leading to these extreme environments. This dissertation also refines the geographic extent of extreme acid saline lake and groundwater systems through …

Cloud Adoption Decision-Making Processes By Small Businesses: A Multiple Case Study, Francis Blay

Walden Dissertations and Doctoral Studies

Cloud services have emerged as a compelling technology with immense benefits, but many companies still have concerns about cloud services adoption because of several failures that have occurred, including mistakes by service providers, exploitation of security flaws by hackers, and immature policies and procedures. The specific problem is how small businesses often lack the understanding of the ramifications of their respective decision-making processes to adopt cloud services. There is little understanding of the decision-making processes managers use in cloud services adoption. The purpose of this qualitative multiple case study was to explore the decision-making processes of 3 small businesses in …

Prosocial Behaviors: The Influence Of Authoritarian Parenting Style On Adolescents’ Prosocial Behaviors Towards Friends And Strangers, Krista-Gay Shaniece Chantal Taylor

Graduate Theses, Dissertations, and Problem Reports (ETD)

Adolescence is the period of development of many negative and positive behaviors. On the positive side, prosocial behaviors are positive behaviors that become more prominent in adolescents. Many of the studies that explore prosocial behaviors have explored it during childhood rather than in adolescence. Additionally, few have assessed specific parenting styles, like authoritarian parenting and its influence on adolescents’ prosocial behaviors within distinct relationships. Therefore, the aims of this study were to assess how the maternal authoritarian parenting style is associated with adolescents’ prosocial behaviors. I also explored how the association between these two variables differ for friends and strangers …

An Examination Of The Suspensions Of Students Identified With A Learning Disability, Shelly Ann Brooker

Walden Dissertations and Doctoral Studies

Students’ disruptive behaviors in the inclusive classroom that are detrimental to the learning environment can eventually elicit exclusionary consequences from general and special education teachers. The recent implementation of the Positive Behavioral Interventions and Supports (PBIS) in the local school district has behavioral outcomes for the students identified as learning disabled. The purpose of this study was to gather and examine information regarding the implementation of PBIS and how the application supports local students identified with a learning disability (LD) receiving excessive suspensions due to their disruptive behavior. This study was guided by Skinner's theory of operant conditioning and Ross' …

Doping With Rare Earth Elements And Resultant Nano-Inclusions On The Electrical And Thermal Properties Of The Mis-Fit Layered Thermoelectric Oxide, Geoffroy Gauneau

Graduate Theses, Dissertations, and Problem Reports (ETD)

Thermoelectric generators produce electricity by directly converting temperature differences into electrical energy through Seebeck effect. Thermoelectric generators possess many unique features, such as having no moving part and being very reliable with a relatively long lifespan once built. They are solid-state waste heat harvesters. With various waste heat available throughout many industries, thermoelectric generators could offer economically competitive renewable energy. The current state of the art thermoelectric materials includes materials with relatively toxic elements and must work under vacuum, making them quite expensive to produce. Among the various thermoelectric materials, ceramic oxides have been proved to be more chemically stable …

A Phenomenological Study: Police Officers’ Lived Experiences With The Use Of Ceds, Gustavo Alejandro Escalante

Walden Dissertations and Doctoral Studies

The use of conducted energy devices (CEDs; e.g., TASER) in the U.S. has increased significantly since their endorsement by the police in the 1990s. Police administrators have struggled with CED placement in use of force continuums, and citizens have voiced concerns regarding their disproportionate use and health effects. An increase in understanding of the value of CEDs, specifically the devices’ role when used as a threat only, provides police administrators with more significant insights regarding their appropriate placement in department policies, which leads to more proportionate use by police officers. This phenomenological study explored police officers’ lived experiences involving displaying …

Speech Mode Classification Using The Fusion Of Cnns And Lstm Networks, Pratyusha Chowdary Vakkantula

Graduate Theses, Dissertations, and Problem Reports (ETD)

Speech mode classification is an area that has not been as widely explored in the field of sound classification as others such as environmental sounds, music genre, and speaker identification. But what is speech mode? While mode is defined as the way or the manner in which something occurs or is expressed or done, speech mode is defined as the style in which the speech is delivered by a person.

There are some reports on speech mode classification using conventional methods, such as whispering and talking using a normal phonetic sound. However, to the best of our knowledge, deep learning-based …

A Machine Learning Approach To Estimate The Annihilation Photon Interactions Inside The Scintillator Of A Pet Scanner, Sai Akhil Bharthavarapu

Graduate Theses, Dissertations, and Problem Reports (ETD)

Biochemical processes are chemical processes that occur in living organisms. They can be studied with nuclear medicine through the help of radioactive tracers. Based on the radioisotope used, the photons that are emitted from the body tissue are either detected by single-photon emission computed tomography (SPECT) or by positron emission tomography (PET) scanners. SPECT uses gamma rays as tracer but gives a weaker contrast and spatial resolution compared to a PET scanner which uses positrons as tracer. PET scans show the metabolic changes occurring at the cellular level in an organ or a tissue. This detection is important because diseases …

Design, Modeling And Optimization Of Reciprocating Tubular Permanent Magnet Linear Generators For Free Piston Engine Applications, Jayaram Subramanian

Graduate Theses, Dissertations, and Problem Reports (ETD)

Permanent Magnet Linear Generators (PMLG) are electric generators which convert the linear motion into electricity. One of the applications of the PMLG system is with free piston engines. Here, the piston is moved by the expander using an internal combustion engine or a Stirling engine. Other applications of the PMLG are wave energy conversion, micro energy harvesters, and supercritical CO₂ expander systems. The most common technology of the electric generators is a rotary electric generator. The current technology of the engine-generators (GENSET) is of a rotary type which uses a crankshaft to convert the linear motion to rotary motion …

Genetic And Biochemical Characterization Of Ergot Alkaloid Synthesizing Fungi And Their Symbionts, Matthew Duane Maust

Graduate Theses, Dissertations, and Problem Reports (ETD)

Ergot alkaloids are fungal tryptophan derived toxins which affect mammalian circulation and neurotransmission. These compounds are biosynthesized by a conserved genetic pathway, known as the ergot alkaloid synthesis (EAS) pathway by fungi belonging to the ascomycete families Trichocomaceae and Clavicipitaceae. Several Ipomoea species and related plants in the morning glory family harbor vertically transmitted symbiotic fungi in the genus Periglandula, also members of Clavicipitaceae, that produce ergot alkaloids. Metabolomic analysis of seeds identified a previously uncharacterized glycoside form of the pharmaceutically important ergot alkaloid, ergonovine. Several species belonging to the fungal genus Metarhizium have recently been shown to have the …

Effect Of Particle Concentration, Sealing Condition And Breathing Rate On Total Inward Leakage For N95 Filtering Facepiece Respirators, Taoreed T. Lawal

Graduate Theses, Dissertations, and Problem Reports (ETD)

Several researchers have considered the relationship between total inward leakage (TIL) and other parameters such as sealing condition, particle concentration, type of particulate material breathing parameters, etc., however, there is dearth of information on the effects of varying particle concentration on the penetration efficiency of filtering facepiece respirators (FFRs), hence, this study aims to study the effect of varying NaCl particle concentration, sealing condition and breathing rate on the TIL as a result of the filtering efficiency of the filters.

To achieve this, we followed the sampling procedure used by He et al., 2014. Four different sealing conditions (SCs) namely; …

Experimental And Computational Exploration Of The Dilute Magnetic Delafossite Cual1-Xfexo2 Alloys, Mina Aziziha

Graduate Theses, Dissertations, and Problem Reports (ETD)

CuAlO₂ is among several ternary delafossites, which is a rare p-type semiconductor with potential applications as a transparent conductive oxide, photocatalyst, and spintronics when doped with transition metal ions. Reported in this thesis are results from our investigations of CuAl_1-xFe_xO₂ (x = 0 to1) with a focus on the x-dependence of structural, magnetic, vibrational, optical properties, and the role of defects and impurities. Samples are prepared by solid-state reactions.

We performed a complete study of magnetic properties to investigate the possibility of room temperature ferromagnetic alloys, which are used in …

Special Education Teachers’ Instructional Practices For High School Students With Developmental Disabilities, Suzann Farmer Mohacsi

Walden Dissertations and Doctoral Studies

Students with developmental disabilities (DD) require intensive instruction from special education teachers to obtain functional skills. At the high school level, special education teachers’ instructional practices for this significant population have rarely been studied by researchers. Using Vygotsky’s social development theory as the conceptual framework, the purpose of this qualitative descriptive study was to explore how special education teachers implement instructional practices for high school students with DD. Participants were 10 public high school special education teachers who had skills and experience implementing instructional practices for students with DD. Data were gathered through open-ended, face-to-face interviews. Analysis of the data …

Solutions To Some Mine Subsidence Research Challenges, Jian Yang

Graduate Theses, Dissertations, and Problem Reports (ETD)

The objective of this work is to address three challenging topics, (1) effects of overburden key strata on subsurface subsidence; (2) effects of longwall subsidence on interstate highways and highway bridges; and (3) effects of dewatering mine water on surface subsidence over inactive room-and-pillar mines, in mine subsidence and to continue improvement of mine safety and health by reducing mine-subsidence related hazards.

Surface and subsurface subsidence events induced by underground mining activities are often capable of causing significant disturbances not only to surface structures, but also to subsurface structures. In this work, models and techniques to study three challenging topics …

Protein/Peptide Characterization Using Mass Spectrometry And Molecular Dynamics Simulations, Ahmad Kiani Karanji

Graduate Theses, Dissertations, and Problem Reports (ETD)

Mass spectrometry (MS) based-techniques and molecular dynamics (MD) simulations have been used to characterize protein/peptide structure as well as their interactions with lipid vesicles and detergents. Chapter 1 introduces an introduction to the concepts and tools that were used in this work. In Chapter 2, the dominant gas-phase conformer of [M+3H]3+ ions of the model peptide Acetyl-PSSSSKSSSSKSSSSKSSSSK are examined with ion mobility spectrometry (IMS), gas-phase hydrogen deuterium exchange (HDX), and mass spectrometry (MS) techniques. This section furthers the development of a protein structural prediction tool by providing information about gas-phase ion conformers of two model peptides having different solution conformational …

Palmprint Gender Classification Using Deep Learning Methods, Minou Khayami

Graduate Theses, Dissertations, and Problem Reports (ETD)

Gender identification is an important technique that can improve the performance of authentication systems by reducing searching space and speeding up the matching process. Several biometric traits have been used to ascertain human gender. Among them, the human palmprint possesses several discriminating features such as principal-lines, wrinkles, ridges, and minutiae features and that offer cues for gender identification. The goal of this work is to develop novel deep-learning techniques to determine gender from palmprint images. PolyU and CASIA palmprint databases with 90,000 and 5502 images respectively were used for training and testing purposes in this research. After ROI extraction and …

Global Existence And Asymptotic Behavior Of The Solutions To Models For Chemotaxis Systems With Chemo Attractants And Repellents, Aesha Lagha

Graduate Theses, Dissertations, and Problem Reports (ETD)

We study global existence and asymptotic behavior of the solutions to models for chemotaxis systems with chemo attractants and repellents in three dimensions. Chemo attractants and repellents may be called chemo agents. For Part I, we use the logistic model for the mass. The interactions between chemo agents and the mass are taken into account. For Part II, we consider the case when mass is conserved and we use the Lotka-Volterra type model for chemo agents. To accomplish this, we use the Fourier transform and energy method. We show the existence of global solutions by the energy method. Also, we …

Behavior Coaching In Pennsylvania Schools Implementing School-Wide Positive Behavior Interventions And Supports At The Universal Tier One Level, Lisa Anderson

Graduate Theses, Dissertations, and Problem Reports (ETD)

School-Wide Positive Behavior Interventions and Supports (SWPBIS) is a multi-tiered system of student support that emphasizes the use of positive behavior strategies for a school’s students. Schools are adopting SWPBIS because it gives staff the opportunity to teach desired behaviors to students and emphasizes the enhancement of instructional time by minimizing disruptions. SWPBIS uses a support framework that includes a building-level behavior coach and a core team made up of an administrator, parent(s), and professional school staff. Staff and student training is bridged with implementation efforts to sustain a positive school climate and prevent student behavior problems. The SWPBIS coach …

The Effects Of Membrane Physicochemical Properties On Huntingtin Membrane Association And Downstream Aggregation, Maryssa Beasley

Graduate Theses, Dissertations, and Problem Reports (ETD)

Huntington’s Disease (HD) is a fatal neurodegenerative disorder caused by an expanded glutamine repeat region (polyQ) within the huntingtin protein (htt). As a result of the expanded polyQ domain, htt associates into a variety of toxic aggregate species. The polyQ domain of htt is flanked at the N-terminal end by 17 amino acids (Nt17) that adopt an amphipathic α-helical structure in the presence of binding partners such as lipid membranes. In addition to comprising a lipid binding domain, the Nt17 amphipathic α -helix has been directly implicated in htt aggregation initiation via self-association with other Nt17 α -helices. Due to …

Reasonable Doubt Ratcheting: How Jurors Adjust The Standard Of Proof To Reach A Desired Result, Michael Conklin

North Dakota Law Review

No abstract provided.

Employee Engagement And Job Satisfaction’S Impact On Productivity In The Distribution Industry, Jessica Copeland

Walden Dissertations and Doctoral Studies

Productivity deficiencies in distribution services are detrimental to profitability, annually causing billions of dollars in reporting losses industry-wide. Understanding employees’ motivating factors in meeting metric-based expectations is essential to enhancing overall performance. Grounded in the motivation-hygiene theory, the purpose of this correlational study was to examine the relationships among employee engagement, job satisfaction, and productivity within the distribution industry. Electronic survey data were analyzed for 47 participants who completed the Mensah Employee Engagement Survey, Mensah Job Satisfaction Survey, and Utrecht Work Employee Engagement Survey. The results of the multiple linear regression were significant, F(2, 44) = 36.84, p = .001, …

Charter School Principals Perceived Self-Efficacy Implementing The Every Student Succeeds Act, Christina Renee Hamilton

Walden Dissertations and Doctoral Studies

Charter school principals have existed in the U.S. public school system for more than 30 years, and the number has grown dramatically in Southern California over the past decade. Like other principals, charter school principals are responsible for implementing the provisions of the Every Student Succeeds Act of 2015 (ESSA). Yet, charter school principals perceptions of self-efficacy are not well enough understood to determine their effective implementation of ESSA. The purpose of this qualitative study was to identify and describe the self-efficacy of charter school principals who implemented the multiple accountability measures of ESSA in Southern California. The theoretical framework …

Portrait Narratives Of Caring Teachers For African American High School Students, Larissa T. Mccormick

Walden Dissertations and Doctoral Studies

For African American high school students, caring relationships extend beyond peer

interaction to include supporting adults, most particularly teachers, who are pivotal to

their educational experience and success or lack of success. The research problem

centered on the lack of diversity and authentic voice when discussing caring teacher-student relationships. Markedly, the voices of African American high school students

were lacking from the current body of research literature. The purpose of this narrative

qualitative study was threefold: (a) to capture the voices of African American high school

students’ as they shared their experience(s) about a caring teacher; (b) to capture the …

Enterprise Resource Planning Implementation In Higher Education: Cost Containment Strategies, Tysha K. Tolefree

Walden Dissertations and Doctoral Studies

Lack of effective cost containment strategies to support enterprise resource planning (ERP) system implementations within higher education institutions (HEIs) result in budget overruns 50% of the time. Grounded in Gartner’s IT cost containment techniques, the purpose of this qualitative multiple case study was to explore strategies HEI project directors use to support a successful ERP implementation on time and within budget. The participants comprised 5 project directors and managers from HEIs and another public organization in the state of Washington. Data were collected from semistructured interviews, archival data, and organization documents. Thematic analysis was used to analyze the data, and …

Washington University Magazine, November 2020

Washington University Magazine

No abstract provided.

Teaching For Musical Understanding Through The Core Music Standards: Creating, Performing, And Responding In The Elementary Music Classroom, Amanda Lynn Ijames

Murray State Theses and Dissertations

This study investigates the implementation, assessment, and instructional needs of elementary music educators of the First District of the Kentucky Music Educators Association in teaching for musical understanding through the artistic processes of creating, performing, and responding of the Core Music Standards. The overarching goals of music education are to teach students to become musically literate and independent makers of music. The researcher conducted an online survey and interviews of members to determine their current instructional and assessment practices and their challenges so that an action plan could be created to assist elementary music educators. Through this study, the researcher …

Evaluating An Ordinal Output Using Data Modeling, Algorithmic Modeling, And Numerical Analysis, Martin Keagan Wynne Brown

Murray State Theses and Dissertations

Data and algorithmic modeling are two different approaches used in predictive analytics. The models discussed from these two approaches include the proportional odds logit model (POLR), the vector generalized linear model (VGLM), the classification and regression tree model (CART), and the random forests model (RF). Patterns in the data were analyzed using trigonometric polynomial approximations and Fast Fourier Transforms. Predictive modeling is used frequently in statistics and data science to find the relationship between the explanatory (input) variables and a response (output) variable. Both approaches prove advantageous in different cases depending on the data set. In our case, the data …

An Application Of A Binary-Integer Programming Process To The Faculty-Course Assignment Problem, Charles Graves

Murray State Theses and Dissertations

Have you ever wondered why you have a certain class or professor at a certain time during the week? Creating a faculty-course schedule is a complicated and time- consuming process. In this thesis, we will examine two binary-integer programming models to generate the faculty-course schedule with various unique course preparations for the Department of Mathematics and Statistics at Murray State University. The first model will present a traditional, on-campus course schedule, and the second will present an online, asynchronous learning course schedule.