Digital Commons Network^™

Temperature Effects On An Axon’S Ability To Maintain Phasing Of A Rhythmic Motor System, Marissa Elaine Cruz

Theses and Dissertations

The precise timing of action potentials generated in the nervous system is crucial for generating adequate behavior. Once generated, action potentials travel along axons towards the neurons or muscles they innervate. Axons are also responsible for preserving the temporal fidelity of the generated action potentials. One challenge axons face is that they can be of considerable length, and exposed to changes in internal and external conditions. Temperature fluctuations, for example, affect the ion channels that generate and propagate action potentials causing changes in action potential speed. It is unclear if, and how, the timing of action potentials can be preserved …

The Effects Of Physical Activity On Middle School Students' Self-Esteem, Marissa Ruchim

Theses and Dissertations

The purpose of this study was to investigate the relationship between student physical activity levels and how they affect self-esteem. The study analyzed the differences in participants’ self-esteem on days they had PE versus days they had Encore class (i.e. journalism, drama, art, global awareness, stem, and music). Participants were 25 students in an intact sixth-grade PE class (10 girls, 15 boys) at a middle school in a suburb of Chicago. Data were collected from two sources, pedometers recording number of steps taken daily and scores on Harter’s Global Self-Worth Scale, a measure of self-esteem. Data were analyzed using SPSS …

Intercultural Accommodation: Accommodating Communication To People Of Different Groups, Marcus M. Gruwell

Theses and Dissertations

The current study attempts to address the widening division of race and communication due to a large continuation of demographics in Western countries like the United States. Using Communication Accommodation Theory and studies from Postcolonialism to the study, the researcher hopes to develop a more concrete understanding as to why people will change their speaking behaviors when encountering different groups. Concepts of the behavior of Postcolonial mentality and changes in speaking behaviors will better create a more social construct as to why people act in certain ways towards different people

Learning A Language: The Gateway To Cosmopolitanism, Caleb Griffin

Theses and Dissertations

This thesis explores the relationship between language acquisition and ethnocentrism. Specifically, does learning additional languages reduce ethnocentrism in an individual? After reviewing the literature on social groups, ethnocentrism, and language acquisition, a quantitative test was carried out. This consisted of a survey design implemented in Morocco using Moroccan subjects. Although learning additional languages was correlated with less ethnocentrism, the results did not meet the threshold for statistical significance. The variables that did have a statistically significant impact on ethnocentrism and prejudice were contact and age.

Kinetic Characterization Of Listeria Monocytogenes 2-C- Methyl-D-Erythritol 4-Phosphate Cytidylyltransferase ( Cms ) Enzymes Using High Performance Liquid Chromatography ( Hplc ), Mark Oblazny

Theses and Dissertations

Infectious diseases, with increasing prevalence of antibiotic resistant bacteria, coupled with the declining rate in discovery of antimicrobial agents, impose one of the most significant threats to human health. Here we identify 2-C-methyl-D-erythritol 4-phosphate cytidylyltransferase (CMS) as a valid target for antibiotic development which is an enzyme in pathogenic organisms that leads to the biosynthesis of isoprene precursor molecules. Isoprene molecules are one of nature’s most common building blocks that are vital to many biological metabolic processes and are synthesized via the mevalonic acid dependent (MVA), or methylerythritol phosphate (MEP) pathway. Vertebrates utilize the MVA pathway, while many pathogenic bacteria …

The Biochemical Assessment Of Two Secreted Acid Phosphatases From Leishmania Tarentolae, Their Response To Electric Fields, Glycosidase Incubation, And / Or Vanadium, Benjamin M. Dorsey

Theses and Dissertations

Leishmaniasis, as defined by the Center for Disease Control and Prevention, is a neglected tropical disease with 1.6 million new cases reported each year. However, there is yet to be safe, effective, and affordable treatments provided to those affected by this disease1. Still underappreciated as a potential pharmaceutical targets, especially for cutaneous leishmaniasis infections, are the two isozymes of secreted acid phosphatase (SAP); secreted acid phosphatase 1 (SAP1) and secreted acid phosphatase 2 (SAP2). These enzymes are involved in the survival of the parasite in the sand fly vector, and the prevention of host macrophages from forming parasitophorous vacuole and …

The Growth Mindset School Community, Christina A. Hild

Theses and Dissertations

Traditional school models perpetuate limited notions of ability. Established in systems designed to label and sort, educators must examine their beliefs about ability and the ways culture and power structures impact expectations and student achievement. By adopting a growth mindset lens and applying distributed leadership to systems within a school, educational leaders can enhance opportunities for all children. The Growth Mindset School Community describes an organization committed to growth and reflective processes intended to monitor thinking and procedures impacting learning and growth. Teacher expectations, feedback, assessment, and grading practices, behavior management, special education, teacher evaluation, and leadership models are all …

Addressing Mental Health, Substance Abuse, And Recidivism In The Juvenile Justice System, Danielle N. Gieschen

Theses and Dissertations

Research has shown links between mental health concerns, substance abuse concerns, and recidivism for youth. However, the vast majority of studies have not examined the impact that receiving services or treatment compliance has on this relationship. In this study, mental health concerns, mental health treatment, alcohol and substance abuse concerns, alcohol and substance abuse treatment and recidivism within the juvenile justice system were examined. The electronic and paper probation files and the paper court files for 77 youth were examined to determine the impact that receiving mental health or substance abuse services has on reducing the likelihood of recidivism. Furthermore, …

Teachers' Perceptions Of Addressing Leisure In Curriculum For Students With Severe Disabilities, Kara Klepp

Theses and Dissertations

This qualitative study was designed to examine the perspectives of addressing leisure in curriculum for students with severe disabilities. Quality of life disucssions have shown the importance of considering skills to prepare them for adulthood which includes leisure outcomes. Research has examined many different aspects of transition including vocational education, but limited research has been conducted relating to leisure outcomes. Qualitative data obtained through semi-structured interviews indicated that more research is needed in leisure education including curriculum development and prioritization of skills taught. The participants reflected on their own definitions of leisure, current leisure outcomes, and the types of assessment …

The Physical And Psychological Effects Of Standing Desks In Office Workers, Hannah Dohm

Theses and Dissertations

PURPOSE: The purpose of the study was to determine differences in energy expenditure between sitting and standing conditions in typically sedentary office workers. A secondary purpose of this study was to determine if there are mindset differences with regards to job boredom, job stress, and job satisfaction between conditions. METHODS: Participants (N = 26, 4 males and 22 females) were from two moderately sized communities in the Midwest that had standing desk options available to them. Data was collected using BodyMedia SenseWear armbands for energy expenditure and self-reported Likert-scale surveys for psychological data. Intake data included sex, age, height, weight, …

Culturally Responsive Educational Leadership: A Qualitative Study Of Indigenous Innovations, Bert Klunder

Theses and Dissertations

This qualitative study of culturally responsive educational leadership (CREL) explores noteworthy cases of system-wide innovation spanning decades through interviews with seven education professionals active within Indigenous movements and organizations driving Native Hawaiian education and the revitalization of Hawaiian language and culture. The research focus includes the Na Honua Mauli Ola Guidelines (and Pathways) for Culturally Healthy and Responsive Learning Environments, along with the preceding Kumu Honua Mauli Ola Philosophy Statement. Interviewees, all with direct connections to these innovations, illuminate their local and global significance through personal accounts of their development and implementation. The study’s uniquely situated methodology yields rich data …

Diurnal And Seasonal Variation In Groundwater Nitrate -N Concentration In A Saturated Buffer Zone, Joseph Miller

Theses and Dissertations

Surface water pollution by nitrate (NO3-) is identified as a critical problem in agricultural land-use areas. Excess NO3- loading causes eutrophication and hypoxia in near-shore marine waters such as the Gulf of Mexico. Diversion of agricultural runoff into saturated buffer zones reduces NO3- loading. Although the mechanisms responsible for NO3- reduction in saturated buffer zones are well characterized, little is known about how NO3- concentrations vary temporally and what factors control those changes. The objective of this study is to understand NO3- concentration and environmental factor variability in a saturated buffer zone on a diurnal scale within and among the …

Communicating Consent: An Investigation Of Predictors Of College Student Sexual Consent Communication, Erin L. Link

Theses and Dissertations

Often, sexual consent is only discussed and explored in the context of sexual assault. While consent is often the deciding factor to determine if a crime occurred, consent is also a vital part of an equally enjoyable sexual encounter. The present study examines a variety of variables effects on consent attitudes, norms, and communication behaviors to attempt to identify predictors of college student consent communication. Findings and recommendations are discussed that highlight the necessity of viewing consent as a communicative act.

A Quantitative Analysis Of Methods Used For Avoidance And Acceleration Of Developmental Mathematics Sequences In Community College, Steven Todd Travers

Theses and Dissertations

Many developmental mathematics programs at community colleges in recent years have undergone a process of redesign in an attempt increase the historical poor rate of student successful completion of required developmental coursework. Various curriculum and instructional design models that incorporate methods of avoiding and accelerating the developmental mathematics requirements have been created in an effort to increase the retention and course completion rate of students placed in developmental mathematics programs. It is believed that developmental students need developmental mathematics courses in order to build a strong mathematical foundation; this will enable them to achieve their desired higher education goals. The …

Fermenting Solutions To New World Problems: Bioremediation Of Blue Agave And Cocoa Pod Wastes, Daniel Hart

Theses and Dissertations

Waste, minimizing it, and maximizing profit from it are major foci of most agricultural production processes today. Waste from two major production processes, namely tequila production and cocoa production, share several characteristics. Both these processes are still carried out as they have been for hundreds of years. They are both relatively concentrated in location; all tequila is produced in a small region of Mexico while cocoa pods only grow in tropical environments within 18° of the equator. In addition, both processes used to produce these commodities remain fairly inefficient; they generate huge amounts of waste that goes mostly unused. With …

Physical Activity And Associated Energy Intake In Undergraduate College Students, Erin Marie Fejes

Theses and Dissertations

Background: College students often develop unhealthy eating habits. Poor eating habits can lead to chronic disease.

Methods: Energy intake and physical activity data from 35 undergraduate students enrolled in a 100-level kinesiology class were recorded and analyzed. Energy intake data was self-reported, while physical activity data was recorded via an activity tracker.

Results: Data points were analyzed twice: each day separately and as averages for each participant. When analyzed as averages, grams of total fat and grams of carbohydrate were the most significantly correlated with minutes of moderate to vigorous+ physical activity (both p<0.01). When analyzed by day, grams of protein, total fat, saturated fat, carbohydrate, sugar, and fiber were all found to be significantly correlated with minutes of moderate to vigorous physical activity to the p≤0.01 level.

Conclusion: An increase in physical activity …

The Efficiency Of Dna Repair Processes In Proximity Of G 4 Dna Structures, Gloria Alvarado

Theses and Dissertations

Guanine-rich segments of genomes promote the formation of a four-stranded DNA structure called G-quadruplex (G4 DNA). While evolutionarily conserved, guanine repeats show increased rates of mutagenesis and instability, and this is likely associated with G4 formation. In this thesis, I sought to clarify the molecular sources of genetic instability by testing the repair, excision, and synthesis through guanine-rich DNA. Using E. coli UDG and human SMUG1, I found that uracil is inefficiently repaired in proximity to G4 DNA in vitro. Investigation of E. coli exonuclease III and exonuclease I activity indicated that G4 DNA is a block to activity and …

Social Capital And Hospital Readmission Of Older Adults, Sheryl Emmerling

Theses and Dissertations

This dissertation is comprised of three manuscripts exploring the concept of social capital and hospital readmission of older adults. The first manuscript provides a review of the literature evaluating studies that measure the relationship between social capital and health, healthy behaviors, and access to and utilization of healthcare resources. Further research focusing on testing various types of individual social capital and their relationship to key outcomes including hospital readmission is needed.

The second manuscript is a description of the Social Capital and Health Framework that can serve as an outline for assisting nurses and other healthcare providers to consider older …

Desert Within A City: Exploring The Relationship Between Food Security, Diet, And Body Mass Index, Jamey Ann Baietto

Theses and Dissertations

Background: Food deserts are areas of decreased access to nutritious and affordable foods. Residing within a defined food desert is thought to decrease consumption of produce, dairy, and whole grains and increase consumption of energy-dense foods as well as body mass index (BMI).

Objective: The purpose of this study was to determine the effects of the level of food security on consumption of fruits, vegetables, dairy, whole grains, high-sugar foods, high-fat foods, and BMI.

Design: A one-time, self-administered data collection packet was sent to residents of a food desert. The Dietary Screener Questionnaire was utilized to determine the average daily …

Scheduling Recess: Perceptions Of Lunchroom Supervisors, Teachers, And Principal, Reilly Layne Mckinnis

Theses and Dissertations

Purpose

The purpose of this study was to ascertain the perceptions of elementary school staff in regards to scheduling recess after or before lunch and the effect each schedule had on students.

Methods

This research was conducted in Fall 2016 when a Midwestern elementary school had recess after lunch (RAL) and in Spring 2017 when the same school had recess before lunch (RBL). A mixed methods approach was used. Nineteen teachers completed a Likert-scale survey, six of whom completed both the pre- and post-survey. One principal and five lunchroom supervisors participated in individual semi-structured interviews pertaining to their perceptions of …

Spit Shined And Polished And Ready For College: A Critical Race Analysis Of Program Directors’ Perspectives On The Contexts Of College Access Programs, Jillian Havard

Theses and Dissertations

College access programs work to prepare underserved students for college admission and enrollment. It is important to identify how the assumptions of college access program leaders affect their common practices and implementation of programs serving African American students, as well as to identify the tensions that exist among theory, research and practice in the college access field. This qualitative study explores the perspectives of college access program directors on the contexts of college access program. Using critical race theory as a theoretical framework, the impact of whiteness, perpetuated by the college access of ideology, is examined.

Measuring The Longitudinal Communication Growth Of Learners Who Are Deafblind, Kristi M. Probst

Theses and Dissertations

The field of deafblind (DB) education has a long and rich history which includes a lack of qualified personnel to meet the needs of the population of learners. In addition, the literature base is small, lacking evidence for effective practices or methods of assessing and tracking growth with these learners. The ability to adequately track student growth is key when IEP teams are making educational decisions. Therefore, it is important to investigate the longitudinal growth of learners who are DB and the possible effects of service provision (number, type, and intensity) on communication growth. This research began the process of …

How Low Can Transparency Go? Secrecy In The Iran-Contra Affair As An Effect Of Power, Taryn Butler

Theses and Dissertations

The Iran-Contra Affair is subjected to hermeneutical discourse analysis to uncover, examine, and question the formation of secrecy as an effect of power in democratic society.

Evaluating The Evidence And Assessing Registered Dietitian Nutritionists' Perceptions Of The Complex Renal Dietary Restrictions, Alyssa Lee Welte

Theses and Dissertations

The renal diet is often regarded as challenging to teach and follow, and can easily lead to additional complications, including malnutrition. Recent trends in the literature have suggested a liberalization in the renal diet, though no studies have assessed whether Registered Dietitian Nutritionists (RDNs) are comfortable making this change. An original, cross-sectional survey was created for this study. 187 renal dietitians completed the survey which revealed that only 15.3% of participants felt it is acceptable to liberalize the standard dietary restriction on fruits and vegetables, and 13.6% said the same about the bean and legume restriction. 19.9% are extremely likely …

Exploring Teacher Candidates’ Civic Efficacy Through Civic Engagement And Critical Literacy In A Literacy Methods Course, Dana M. Karraker

Theses and Dissertations

Public school spaces play a large role in developing people’s understandings of civic knowledge and responsibility. Teachers, administrators, and policy-makers design school curriculum to reflect the types of citizens they believe a society needs, and thus, determines approaches to teaching and curriculum development (Labaree, 1997). This action research study examined the civic efficacy and critical literacy understandings of seven elementary education teacher candidates enrolled in a content area literacy course. The course and the study were designed using a critical literacy and civic efficacy framework as literacy practices are closely connected to the ways in which people are able to …

Fake Sports, Real Impact? Investigating Social Identity, Identity Construction, And Perceptions Of Self Using Fantasy Sports Leagues As A Platform For Communication Research, Adam James Mason

Theses and Dissertations

The present study used fantasy sports as a vehicle for investigating social identity formation and expression in online communication scenarios. Particularly of interest to the researcher were the mechanisms by which affinity for an individual’s fantasy sports league was generated, perceived public commitment to a fantasy sports identity, and the impact that commitment had on respondents’ behavior and self-concept. It was believed completing tasks associate with fantasy sports competitions and interacting socially with fellow fantasy league participants would have a direct effect on players’ level of collective self-esteem. It was also posited evaluations of collective self-esteem would then predict the …

Student Demographic And Academic Characteristics That Predict Community College Student Success In Online Courses, Jennifer L. Davidson

Theses and Dissertations

Online student success is a concern for higher education institutions especially community colleges with open enrollment admission. This study analyzed online student success using online GPA (dependent variable) and both demographic and academic characteristics of online students (independent variables) to determine which characteristics significantly correlated to and predicted student success in online courses. The sample included an unduplicated count of 4,046 online students enrolled in at least one online course during fall 2015 and spring 2016 at a public, Midwestern community college. Six research questions and twelve hypotheses were used to determine which independent variables led online students to a …

Elucidating The Molecular Parameters And Mechanism Of Homology Searching During Meiosis In Neurospora Crassa, Nicholas Adam Rhoades

Theses and Dissertations

Integration of foreign DNA into a host genome is often detrimental to the host organism, as the DNA is often of viral or transposon origin. Many organisms have established DNA surveillance and genome integrity mechanisms to defend against these harmful DNA insertions. Neurospora crassa, a filamentous fungus belonging to the Ascomycota group, has several DNA defense mechanisms to combat foreign DNA integration to its genome. One such mechanism is Meiotic Silencing of Unpaired DNA (MSUD). During meiosis, this remarkable system can detect unpaired genes on homologous chromosomes during sexual reproduction and silence their expression throughout meiosis. In order for the …

Students’ Time In Their Heart Rate Zone With And Without Polar Display, Amy Marzano

Theses and Dissertations

The lack of physical activity (PA) and rise in sedentary behavior has become an increasing problem in the United States (Owen, Sparling, Healy, Dunstan & Matthews, 2010). The U.S. Department of Health and Human Services (USDHHS) recommends sixty minutes of daily PA for young people ages 6-17 (CDC, 2013). Despite this recommendation, the 2012 National Health and Nutrition Examination Survey (NHANES) data reported that only 24% of youth 12-15 years of age were obtaining sixty minutes of moderate-to-vigorous physical activity (MVPA) every day (Fakhouri, et al., 2014). Physical education (PE) is one of the few environments where all children are …

Pre -Service And Novice Teacher Perceptions Of Behavior Management Preparation And Practice In Physical Education, Shane Turpen

Theses and Dissertations

If students are not engaged, they cannot be learning (Stright & Supplee, 2002). Student engagement relies heavily on the environment of a classroom, as well as the management of behaviors before and during a lesson (Him & Scott, 2014). Student engagement refers to the degree of attention, curiosity, interest, optimism, and passion that students show when they are learning or being taught, which extends to the level of motivation they have to learn and progress in their education. (George Lucas Educational, 2011 In many cases, a lack of student engagement can be attributed to a discrepancy in behavior management competence …