Digital Commons Network^™

Loss On Ignition Using Infrared Heating, Benjamin J. Binoniemi

Masters Theses

The focus of this study is a proof of concept that infrared heating can be used to produce a reliable and rapid method of performing the loss on ignition test. The loss on ignition test is a foundry industry standard test that requires all moisture and volatile organic compounds be vaporized from a sample of foundry sand. The standard test as recommended by the American Foundry Society uses a muffle oven and requires nearly four hours to perform. This new concept performs the same test in approximately ten minutes. The biggest issues with the loss on ignition test are time …

Modal Logic And Ontological Arguments, Alex Yousif

Masters Theses

In this thesis I will evaluate various modal ontological arguments for the existence of God. I will evaluate Kurt Gödel’s modal ontological argument (as preserved by his student Dana Scott), and Anthony Anderson’s emendation of it. I will conclude that both Gödel’s argument and Anderson’s emendation fail. I then propose a revised version of C’Zar Bernstein’s ontological argument. I conclude that while this argument is not rationally compelling, it is more plausibly sound than not. Finally, I will demonstrate that some extant general objections to modal ontological arguments are unconvincing.

The Effects Of Tiered Goals And Bonus Pay On Performance, Jessica L. Urschel

Dissertations

This study examined the relative effects of tiered goals, difficult goals, and moderate goals on performance when individuals earned bonus pay for goal achievement. The experimental design was a 3 x 2 mixed factorial design. Participants were 44 undergraduate students performing a computerized data entry task that simulated the job of a medical data entry clerk. For each session, participants were paid a $4 base salary plus bonus pay contingent on goal achievement. Participants were randomly assigned to 1 of 3 groups: a) a multiple, tiered goal level condition, in which participants earned $1 in bonus pay for achieving an …

Emotional Responses To Musical Dissonance In Musicians And Nonmusicians, Rebecca Joan Bumgarner

Masters Theses

The purpose of this project was to investigate the influence of music education on individuals’ subjective and physiological responses to consonant and dissonant excerpts. Participants were categorized as having high experience (HE) or low experience (LE) in music education. Participants listened to 40 randomized excerpts of music, half of which were consonant, the other half dissonant. Electrodermal Activity (EDA) and Facial Electromyography (EMG) data were collected for each participant, as well as self-reports of perceived pleasantness for each excerpt. It was expected that HE participants “learned” dissonance through music education, and therefore would respond more strongly to dissonant excerpts. As …

Analysis Of Mobility Impact For Implementing Complete Streets, Marino Esteban Calderón Díaz

Masters Theses

Traffic simulation of the Western Michigan University campus and Downtown Kalamazoo to propose changes in the traffic flow and urban design are described. The main purpose of this thesis is to investigate the traffic mobility impact when incorporating the concept of Complete Streets in Downtown Kalamazoo. This project analyzes alternatives to improve traffic mobility for Stadium Drive, which includes new road geometry and roundabout. It also proposes wider sidewalks for pedestrians, bicycle lanes, and a designed landscape that enhances the genius loci. Bicycles are an ecofriendly means of transportation and the city of Kalamazoo lacks a safe path for bicyclists …

Assessing The Effectiveness Of A Picture Exchange Communication System On Increasing Manding And Vocal Speech In Identical Twin Adults With Autism, Laura C. Hilton

Dissertations

This study examined the effectiveness of a Picture Exchange Communication System (PECS) on increasing manding (i.e., making requests) and spontaneous vocalizations. Participants were a set of identical twin adult women, both with a diagnosis of autism. The main dependent variable was the number of mands emitted by the participants while utilizing PECS. During each phase of training, participants had to meet a specific criterion before receiving a preferred item. Once the participants met the criterion for each phase of PECS training, a new phase began. Spontaneous vocalizations were tracked during each phase of training to determine if, as previous studies …

Missing Pieces: How Neighborhood Health Context Influences Jail Reentry, Andrew Gregg Verheek

Dissertations

This study explores how neighborhood context influences the odds of reoffending by those released from incarceration at a local jail facility. Using data from four sources, I seek to contribute to the understanding of reentry by including two factors missing from current theoretical and empirical work on inmate recidivism. First, using a social disorganization perspective, I include measures of neighborhood health to gain an understanding of how increased substance abuse, mental health, and physical health issues among neighborhood residents impede the development of social capital and informal control that are crucial to the reduction of recidivism. Additionally, I examine jail …

Energy, Angular And Charge Deposition Dependence Of Electron Transmission Through Insulating Polyethylene Terephthalate Nanocapillaries For Narrow Beam Production, Darshika Keerthisinghe

Dissertations

This study analyzes the characteristic properties of electron transmission with incident energies of 300, 500 and 800 eV for the production of nanometer-sized beams through insulating polyethylene terephthalate (PET) nanocapillaries. More specifically, it investigates the transmission for very small tilt angles near zero degrees with the small step sizes revealing distinct regions of behavior, angular dependence, energy and the charge deposition dependence on transmission. Results were obtained for two Samples, 1 and 2, with different capillary diameters (100/200 nm) and pore densities (5 x 10⁸ /5 x 10⁷ /cm²), respectively, with the same foil thickness 12 …

Preferences For Evidence-Based Depression Treatments: An Emphasis On Patient-Focused Care, Lauren A. Frye

Dissertations

Research indicates most depressed patients in the general U.S. adult population seek depression treatment in primary care settings where the prevailing method of treatment is antidepressant medication. Although primary care physicians regard this approach as a preferable first line method of depression treatment, studies indicate many patients do not. Several studies have found depressed patients in these settings prefer psychotherapy or counseling over anti-depressant medication. Many advocate patient preferences should be integral to the treatment decision making process. There is a demonstrated propensity towards psychotherapy or counseling over antidepressant medication among depression patients. However, it is unclear which psychological depression …

Blind Source Separation For Feature Detection And Segmentation In Ground Penetrating Radar (Gpr) Lmaging Of Concrete Bridge Decks For Nondestructive Condition Assessment, Vincent Krause

Dissertations

Concrete bridge decks require periodic condition assessment and preventive maintenance to extend their useful lifespan. Nondestructive evaluation methods such as Ground Penetrating Radar (GPR) are slowly beginning to replace or complement the manual (visual) assessment of bridge conditions for detecting defects at their early stages. However, GPR scans of bridge decks are frequently cluttered with high amplitude reflections from known parts of the bridge deck, which make the detection of defects’ low amplitude reflections difficult. One such known part is the embedded steel reinforcement bars known as rebar.

This dissertation presents a novel approach to the automated detection of defects …

Increasing Physical Activity In Young Adults With Autism Spectrum Disorder, Katherine B. Lalonde

Dissertations

Experts recommend that individuals walk 10,000 steps or more per day and doing so has been shown to have several health benefits. Unfortunately, many people fall short of 10,000 steps per day. Exercise levels are characteristically lower in people with Autism Spectrum Disorders (ASD) than in people without ASD. The present study comprised two experiments that used goal setting and reinforcement to increase physical activity in young adults with ASD. The first study employed a multiple-baseline-across-participants design in combination with a reversal design to determine the effects of a treatment package on the number of daily steps taken by young …

An Evaluation Of The Primary Care Providers’ Perspective Of The Effects Of Moderate Alcohol Consumption On Health, Gisele Tchamba

Dissertations

The complexity of health benefits of moderate alcohol consumption (MAC) is well documented. From the World Health Organization recent report, impact of harm from alcohol consumption was 3.3 million deaths or 5.9 percent of all global deaths (WHO, 2014).

Yet, the benefits of MAC for better health and longer life expectancy compared with abstinence are advocated in numerous studies (Nova, Baccan, Zapatera and Marcos, 2012). However, the nature of alcohol, its role on human sufferings has generated disagreements in the scientific community. Analysis of the results of early studies advocating better health for moderate drinkers, reveal discrepancies regarding the influence …

The Effects Of Incentive Pay Systems With Tiered Goals On Performance, Daniel B. Sundberg

Dissertations

This study examined the relative effects of three incentive pay systems, piece-rate pay, threshold piece-rate pay, and bonus pay, on performance when individuals were given the same five-tiered performance goals. A fourth system, wage pay, served as a control. The task was a computerized simulation of a medical data entry job and the primary dependent variable was the number of correctly completed patient records. Sixty-six college students were randomly assigned to one of the four pay conditions, and attended one 60-minute covariate session and five 60-minute experimental sessions. Participants in the wage pay condition earned $6.50 per session; those in …

Ways In Which Community Involvement May Influence Girls’ Education In Senegal, Babou Ndiaye

Masters Theses

This study attempts to examine through the lens of social feminist theory the ways in which community involvement may influence girls’ education in Senegal. It highlights the extent to which networking, advocacy, and meaningful interactions between community and school may contribute to improving access, learning conditions, and academic achievements for girls. The paper also provides an analysis of the adverse effects of community involvement on girls’ education in Senegal. It underscores the extent to which patriarchy and class interfere to shape community involvement and undermine girls’ education, in terms of both access and quality. The paper further sketches a combination …

Comparing Slug Test Methods For Unconfined Aquifers, Hussain Jaber Alfaifi

Dissertations

Slug test methods are used to determine in situ aquifer hydraulic conductivity (K) more quickly and economically than a pump test can. This study compares slug test methods for unconfined aquifers, looking at how to conduct a test using a physical slug, and at different analysis methods including Bouwer and Rice (1976), Kansas Geological Survey (KGS 1994), Hvorslev (1951) and Dagan (1978). Questions that motivated this study include: How well does the Bouwer and Rice method work? What is the most effective way to conduct a slug test? Does using a large physical slug relative to the well diameter and …

Failing To Replicate: Hypothesis Testing As A Crucial Key To Make Direct Replications More Credible And Predictable, Pedro Fernando Mateu Bullón

Dissertations

Theory cannot be fully validated unless the original results have been replicated, resulting in conclusion consistency. Replications are the strongest source to verify research findings and knowledge claims. Sciences such as medicine, chemistry, physics, genetics, and biology, are considered successful because their knowledge claims are buttressed by a large set of replications of original studies. Unfortunately in the social sciences many attempts to replicate fail and thus there is a continuing need for replication studies to confirm facts, expand knowledge to gain new understanding, and verify hypotheses. Two plausible explanations for the failure to replicate in the social sciences could …

Three Essays On Panel Data Estimation, Alexander Houser

Dissertations

This work discusses various aspects of panel data estimation. In chapter one, an algorithm for semiparametric random effects estimation is proposed. The performance of bootstrap-based confidence intervals for the proposed estimators are examined and found reasonable. The algorithm is also applied to a set of U.S. state level medical expenditure data to estimate the medical Engel curve. In the second chapter, the predictive performance of various parametric and semiparametric panel data estimators is compared on the same dataset of U.S. state level medical expenditures as well as out of sample forecast performance and bootstrap bias-corrected mean square errors of the …

Comparison Of Item Response Theory Models For Data Fit Of Quality Control Measurements For Maillard Reaction Browning In Foods, Polly Barrett

Dissertations

In foods, browning is a complex set of reactions known as the Maillard Reaction (MR). As food is cooked, MR yields flavor, color and changes to the chemical properties of the initial food item. It is possible to undercook or overcook the food item, resulting in a less browned or burnt product. Item response theory (IRT) is often used to place subjects and instruments on the same continuum of the measured latent trait. IRT has been widely used in the fields of educational measurement and psychology, but few studies combine IRT and food science. This research tested IRT modeling for …

Mothers Who Choose Traditional Public Education In Times Of Economic Stress, Criticism, And District Reform, Brian W. Davis

Dissertations

As districts attempt to achieve higher accountability for student results while making complex decisions to balance budgets, it has become increasingly more common to restructure or reorganize educational delivery systems in ways that affect children and their families. Understanding how families and, in particular, mothers translate their experiences with structural and other changes enacted by the schools serving their children can assist in defining a new strategic direction of renewal, growth, and revitalization.

The purpose of this phenomenological study was to describe the experiences of 18 mothers, and their children, who were participants in multiple school reform initiatives in an …

Using Dynamic Lndicators Of Basic Early Literacy Skills (Dibels) Oral Reading Fluency Data To Predict Michigan Educational Assessment Program Outcomes, Lisa Lockman

Dissertations

Schools are under legislative pressure to ensure students make adequate progress each year, and therefore, must identify students in need of intervention at early grade levels. Educators use diagnostic tools to measure student progress, attempting to determine which children may be most at risk for future reading failure. The Dynamic Indicators of Early Literacy Skills (DIBELS) is widely used for early identification of students who have risk factors. This study incorporated a quantitative, correlational, ex post facto design to examine the relationship between students’ third grade scores on the spring DIBELS Oral Reading Fluency (ORF) assessment and their fifth grade …

Choice--‐Based Art: Students Who Create, Not Replicate, Hillary K. Moczerad

Masters Theses

The problem that I researched in today’s art education world is how to teach our art students to be problem solving, confident, independent thinkers. It seems that in a classroom that is supposed to be full of innovation and creativity, it is currently falling flat. Through research, I discovered a teaching methodology called Choice-­‐Based Art that claims to eliminate these problems in the art room through student-­‐directed learning and choice while still delivering art curriculum. In order to test these theories, I aligned my classroom with the demands of the methodology and planned a field test with two groups of …

50th International Congress On Medieval Studies, Medieval Institute, Western Michigan University

International Congress on Medieval Studies Archive

The printed program of the 50th International Congress on Medieval Studies (May 14-17, 2015), including the Corrigenda.

Putting The Motive Back In Motivation: Exploring The Promise Of Intention And Practical Knowledge In Reengaging The Apathetic Learner, Lisa M. Cronkhite-Marks

Masters Theses

This paper explores the conceptions of motivation from the standpoint of two very different types of discourse; the first from important theories of educational psychology such as Weiner’s attribution theory, Ryan and Deci’s self-determination theory, and social constructivist theory of motivation, all of which rely on theoretical knowledge to investigate motivation; and the other found in philosophical/analytical discussions of motivation such as in the work of G.E.M. Anscombe, Julia Annas, and Rollo May, all of which make use of practical knowledge in their conceptualization of human motivation. The paper questions whether inquiry into motivation with the goal of positively impacting …

Fostering The Efficacious Adolescent Artist, Regina Beltowski

Masters Theses

Low self-esteem and insecurity is common among adolescents. In the secondary-school art room, students often stop engaging in art practice, believing that they lack talent, when the truth is that they lack specific skills. Students who are fortunate to have teachers who help them develop their skills experience a boost in feelings of self-efficacy, and often reengage with art production. This thesis project focuses on strengthening students’ self-efficacy in the visual arts at the secondary level. Clarifying the differences between related terms – self-esteem, self-concept, and perceived control – I focus on self-efficacy as a characteristic that plays a significant …

A Comparison Study Of Diagnostic Outcomes Between The Music Therapy Assessment Tool For Awareness In Disorders Of Consciousness (Matadoc) And The Coma Recovery Scale-Revised (Crs-R), Caitlyn E. Bodine

Masters Theses

The purpose of this study was to explore preliminary external validation of a standardized music therapy assessment tool used in the detection of awareness with the DOC patient population with an external reference standard. Eight subjects were administered both the MATADOC and the CRS-R within five days of one another, and results were compared on the levels of overall diagnosis, analogous domain subscales, and intra-assessment relationships between individual domains and overall diagnosis. Results indicated a very strong level of agreement for overall diagnosis (r_s = .85, p < .01), very strong relationships between the auditory and visual components of the two assessments (r_s = .76, p < .05, and r_s = .81, p < .05, respectively), and a strong, but non-significant relationship between arousal scores on the two assessments (r …