Digital Commons Network^™

Land Of 9,999 Lakes? White Bear Lake's Water Crisis And How Colorado Can Help, Nick Redmond

Minnesota Journal of Law, Science & Technology

No abstract provided.

Differences Of Cycling Experiences And Perceptions Between E-Bike And Bicycle Users In The United States, Ziwen Ling, Christopher R. Cherry, John Macarthur, Jonathan X. Weinert

Civil and Environmental Engineering Faculty Publications and Presentations

E-bikes are bicycles that provide pedal-assistance to aid people in cycling. Because of the potential of promoting sustainable transportation, more attention has been focused on the e-bike market. This paper investigates the differences of the cycling experience and perceptions between e-bike and conventional bicycle users, using samples drawn from independent bicycle dealer customers. A total of 806 respondents in the United States took the on-line survey, including 363 e-bike-owning respondents. The results show that e-bikes play a more important role in utilitarian travel, such as commuting and running errands, compared to a conventional bicycle. Conventional bicycle-owning respondents use their bicycles …

Impact Of Last Mile Parking Availability On Commercial Vehicle Costs And Operations, Miguel Figliozzi, Chawalit Tipagornwong

Civil and Environmental Engineering Faculty Publications and Presentations

This research analyses how parking availability levels affect commercial vehicle parking costs and operations in congested urban areas. Unlike passenger vehicles, parking availability has an impact on route characteristics and commercial vehicle fleet sizes. Hence, commercial vehicles parking costs cannot be captured solely by estimating delays and/or the cost of parking fines. This research combines logistics, queuing, and optimization models to study the impact of last mile parking availability on commercial vehicle costs and operations. Scenarios are built to study the impact of parking availability on typical less-than-truckload (LTL) and courier service costs. Results indicate that parking availability levels do …

Air Ambulance Reform – Why Congress Should Exempt Air Ambulances From “Carrier” Classification And Preemption Under The Airline Deregulation Act, Andrew J. Upton

Journal of Air Law and Commerce

No abstract provided.

Flying While Intoxicated: Options For Pilots, Airlines, And The Faa In Dealing With Alcohol Issues, Catherine Parsley

Journal of Air Law and Commerce

No abstract provided.

Investigating The Receptivity Of Counseling Students Toward Receiving Counseling, Oluwatoyin Adeyemi

Theses and Dissertations

This study investigated the perceptions of graduate students in counseling toward seeking counseling as part of the efforts to promote the personal and professional development. The main research question is: what are the perceptions of graduate counseling students toward receiving counseling? The secondary questions are: What are the reasons graduate students in counseling would be willing or reluctant to receive counseling? What are the perceived benefits of counseling? And, finally, what are the perceived drawbacks of counseling? The study is qualitative in nature applying a phenomenological design. The participants were purposefully selected from the Ed.S. program in Counselor Education. Six …

Social Support, Parent Stress, And Child Aggression: A Longitudinal Model Of Family Ecology, Jill B. Lubansky

Theses and Dissertations

In the last few decades, treatment of problem behaviors in children and adolescents has targeted the entire family rather than more traditional methods that targeted the individual child. This approach is rooted in family systems and other ecological research and theory. The social sciences have maintained a long history of inquiry into the relations among social support, stress, and psychopathology. However, few of these inquiries include child outcomes, such as behavior problems, as the psychopathological outcome. Even fewer studies have utilized longitudinal models that have the capacity to accurately reflect the developmental process of stress and psychopathology. In the current …

Cable Health Monitoring System Built Into Power Converter Using Time Domain Reflectometry, Hossein Baninajar

Theses and Dissertations

Aging cables are a critical reliability concern for many electrical systems. Cables run over long distances, are often exposed to harsh environments and are intended to work for several decades. Cable faults can be a serious problem because cables are usually hard to repair or replace. Condition based maintenance is a popular approach that provides high reliability and low maintenance cost at the same time. This is a non-destructive method that collects information about the health condition of the cable under test without causing any potential damage.

Nowadays, in several applications power cables are connected to power converters and it …

What We See Depends On Where We Stand: Distorted Perception Of Social Income Inequality, Jingwen Zhong

Theses and Dissertations

This research investigates how individuals’ structural positions affect their justice perceptions of income distribution. Several previous studies have found the effect of socio-economic status along with other factors on people’s preference for how much more high-prestige occupations should be paid than low-prestige occupations. However, there is not much effort on exploring theoretical explanations for those empirical findings. To provide explanations for the effect of structural position on perceptions of income inequality, two potential theoretical perspectives are examined: self-interest theory and Wegener’s illusory perception theory. The study uses Chinese General Social Survey data to investigate the impact of individuals’ income on …

Assessing Aberrant Glycosylation With Synthetic Lectins To Detect And Stage Prostate Cancer, Anna Veldkamp

Theses and Dissertations

Aberrant glycosylation takes place during the onset of cancer and throughout the progression of the disease allowing certain glycans to serve as biomarkers1. Boronic acid functionalized synthetic lectins (SLs) have been shown to bind selectively and crossreactively to certain glycoproteins through covalent yet reversible interactions between the boronic acids and 1,2- or 1,3-diols found on saccharides2. This project focuses on 1) data acquisition optimization of an existing SL array; 2) the identification, isolation, and characterization of new SLs that interact with proteins and glycoproteins targeting the prostate and prostate cancer; and 3) the utilization of new SLs in cross-reactive sensor …

Emergence Of Stranger Fear In Preschoolers With Fragile X Syndrome And Idiopathic Autism Spectrum Disorder, Jessica Scherr

Theses and Dissertations

This study investigated multiple behavioral indicators of social fear and their relationship to symptoms of autism in preschool boys with atypical and normative development using a stranger approach design. Participants consisted of 101 male preschoolers that were categorized into four groups: boys with fragile X syndrome (FXS; N= 29), FXS with elevated autism symptoms (fxASD; N = 25), idiopathic autism spectrum disorder (iASD; N = 11), and typically developing boys (TD; N = 36). Results indicated specific behavioral responses to a stranger differentiated preschoolers with more severe symptoms of autism (e.g. fxASD and iASD groups) from those with low autism …

Ninth-Grade Students’ Perceptions Of Social Media Responsibility & Cyberbullying, Geoffrey A. Wagner

Theses and Dissertations

At Upstate High School (pseudonym) in South Carolina, incidences of cyberbullying are on the rise. This explanatory action research study was implemented with the purpose of raising awareness of social media responsibility among ninth-grade high school students along with determining what these students’ perceptions of social media responsibility and cyberbullying. The study was conducted during the Fall semester of 2016 with a single group of 105 9th grade students at a high school in the upstate of South Carolina. Students who participated in the study completed an 85-item questionnaire to provide such quantitative information as their demographics, social media usage, …

The Private University Faculty Perspective Of Community College Transfer Students: An Ethnographic Interview Study, Sally E. Hyatt

Theses and Dissertations

Faculty/student relationships have a significant impact on student retention and success (Tinto, 1975, 1993). However, little is known about how faculty perceive community college transfer students and how they make meaning of their interactions with these students. This qualitative, descriptive, ethnographic interview study describes faculty/student interaction and the ways in which community college transfer students are perceived by the faculty at one small, private, nonprofit, masters-level university. The research questions used for this study were designed to investigate the faculty’s perception of community college students, the students’ academic experiences and the faculty/student relationship.

The researcher gathered data during 12 in-depth …

Student Involvement As A Mediator Of The Relationship Of Peer Leaders In First-Year Seminars To Academic Achievement And Persistence, Liyun Zhang

Theses and Dissertations

Peer leaders as a component of First-Year Seminars (FYS) are designed to assist in the adjustment, satisfaction and persistence of first-year college students. Although previous studies have consistently found the positive and direct impact of peer leaders on first-year students’ academic achievement and persistence, there is still a lack of clear understanding on why peer leaders have this positive relationship with students’ academic achievement and persistence. Thus, drawing on Astin’s theory of student involvement for higher education (1984, 1993, 1996), and Tinto’s interactive theory of departure (1993), this short term longitudinal study examined the process through which peer leaders resulted …

Longitudinal And Geographical Modeling Of Circular Data With An Application To Sudden Infant Death Syndrome, Xinyan Cai

Theses and Dissertations

The aim of this thesis is to study seasonality of death in U.S. infants who died from SIDS. We also propose to investigate secular trends and geographical patterns of seasonal patterns of mortality. The application of circular statistics is used to describe the seasonality of the month of death in infants who died from SIDS in 1990, 2000 and 2010. The secular trends of seasonal patterns of SIDS mortality are investigated using a circular linear regression model after adjusting for potential confounders. The geographical variation in seasonal patterns of SIDS mortality is explored from the U.S. map and quantified by …

Three Studies Of Service-Learning As An Approach To Movement Integration In Elementary Classrooms, Robert D. Michael, Jr.

Theses and Dissertations

This dissertation consists of three studies that examine service-learning (SL) as an approach to incorporating movement integration (MI) in elementary classrooms as part of a comprehensive school physical activity program (CSPAP). All three studies attempt to advance the knowledge base about using partnership approaches to supporting schoolbased physical activity promotion.

The purpose of study one was to examine the perceptions of preservice classroom teachers (PCTs), classroom teachers (CTs), and course instructors who participated in a constructivist-guided university course with a focus on MI and a SL component. Focus groups with 172 PCTs and individual interviews with 7 CTs and 4 …

Effects Of The Mindplay Computer Program On Student Reading Achievement: An Action Research Study, Kara Mann

Theses and Dissertations

This quantitative Action Research study examined how a computer-assisted reading program, called MindPlay, affected reading achievement in four second-grade classrooms within a Title I School. The identified problem of practice at Amazing Elementary School (AES) involved numerous years of underachieving reading results for underprivileged, racially diverse children. The majority of primary school students at AES are considered “at-risk” given their reading performance. The study explored whether a different intervention technique would increase student reading achievement, specifically in fluency, phonics, and comprehension, within a Title I context. Therefore, the research question that guided this study was as follows: “What is the …

Depressive Symptoms Association With Health Outcomes And Treatment In Older Americans With Diabetes, Lashonda Jovon Williams

Theses and Dissertations

Introduction: Diabetes remains the 7th leading cause of death in the United States. Diabetes is a major public health concern of its own, but when you add the comorbidity of depression, diabetes outcomes are amplified. This dissertation examines how depressive symptomatology and treatment for depression are associated with selfreported health (SRH) and diabetes control.

Methods: Chi-square and logistic regression were used to analyze data from the Health and Retirement Study (2012). We assessed the associations between SRH and diabetes control with depressive symptomatology data.

Results: In our sample (n=4374), 19% of respondents reported high depressive symptomatology and …

Supercritical Carbon Dioxide Treatment Of Natural Biomaterials For Tissue Engineering Applications, Dominic M. Casali

Theses and Dissertations

The number of people requiring an organ transplant in the United States has increased considerably over the past 25 years, but the number of organ donations has stagnated; over 8,000 people now die annually while awaiting a transplant or become too sick to receive one. Tissue engineering (TE), the design and production of artificial tissues and organs in vitro, has been proposed to alleviate this problem. Though synthetic polymers offer tunable mechanical and biochemical properties, natural biomaterials have recently garnered attention in TE for their high degree of biocompatibility and ability to direct cell proliferation and constructive tissue remodeling. Yet …

Picturing Rest: A Photovoice Study Of African American Women’S Perceptions And Practices Of Rest, Eboni T. Herbert Harris

Theses and Dissertations

African American women are consistently identified as being less likely to participate in sustained leisure time physical activity (Tussing-Humphreys, Fitzgibbon, Kong, & Odoms-young, 2013), yet more likely to be overweight or obese (Levi, Segal, Laurent, & Rayburn, 2014). There has been a wide range of initiatives directed towards preventing and/or reducing obesity among African Americans, such as targeted physical activity and nutrition interventions involving goal setting, group and individualized counseling, and social support. Previous research focused on African American women’s perceptions toward physical activity, nutrition, and weight; emphasize the consideration of cultural attitudes like placing a high value on rest …

Contesting The Generic Refugee: Siv Identity, Community, And Agency During Resettlement, Benjamin J. Sylvester

Theses and Dissertations

This thesis examines the complexity of identity and community formation by Special Immigrant Visa (SIV) holders during resettlement in Columbia, South Carolina. It explores the ways in which identities coalesce around various themes, such as religion, gender, and military service, how these identities serve to create, expand, and claim membership in communities, and how SIVs exercise agency throughout these processes. Through semi-structured interviews with 9 SIVs in Columbia, SC, this qualitative study highlights the unique, highly individualized ways in which a select group of refugees experience resettlement, how they negotiate their placement within socio-economic hierarchies, and exercise agency to obtain …

Analysis Of Food Exposures In Foodborne Disease Outbreaks, Alecia T. Alianell

Theses and Dissertations

Foodborne illness remains a serious public health problem in the United States in general as well as South Carolina in particular. Obtaining good food ingestion histories as well as possible risky environmental exposures is one of the earliest, most important tasks to complete in any foodborne outbreak investigations. Because time is of the essence in investigations, we have evaluated a rarely used biostatistical method, Random Forests, to data obtained from DHEC. Random Forests has the potential to facilitate more rapid identification of foods or environmental exposures that may be associated with outbreaks. We also examined previous cases of salmonellosis using …

Applications Of Multimedia Resources Developed As Part Of The Virtual Cell Animation Collection In Undergraduate Introductory Biology, Eric Edward Goff

Theses and Dissertations

Calls for reform in undergraduate STEM education have arisen from an increased need for well-trained biology graduates in the future scientific workforce. To address this need, many institutions have focused on a pedagogical restructuring of instructional practices to promote deeper conceptual understanding of core biological concepts. This study investigates the implementation of multimedia resources as a possible reliable supplement to undergraduate introductory biology and aims to provide empirical evidence on the instructional best practices of their use. As a central part of this study, we focus on one specific multimedia package, the Virtual Cell Animation Collection, due to its developmental …

Early Life Factors And Health Outcomes In Children And Mothers, Olubunmi Olufunke Orekoya

Theses and Dissertations

This dissertation focused on early life exposures and their impact on children and mothers’ health. It consists of three distinct studies with an overarching goal of understanding how early life factors influence health outcomes among children and mothers. The broad aims are: 1) to examine the association between maternal gestational weight gain and offspring weight at 1 year, while assessing the mediating role of birth weight; 2) to determine the association between breastfeeding practices and development of allergic conditions (eczema/skin allergy, hay fever/respiratory allergy, and asthma); and 3) to examine the association between breastfeeding and postpartum weight retention at 12 …

African American End-Stage Renal Disease And Medication Adherence: What Are The Effects Of Everyday Racism?, Tamara Estes Savage

Theses and Dissertations

This dissertation explored the racial medication adherence disparity in end-stage renal disease (ESRD) patients. Prior research suggests that there are poor rates of medication adherence in the African American ESRD population. However, the reasons for this racial inequity are not understood. This dissertation explored the impact of everyday racism in the healthcare system in general and dialysis centers in particular on medication adherence. To gain an understanding of the possible contribution of everyday racism to medication nonadherence, Critical Race Theory (CRT) was used as the theoretical foundation of the study.

A total of 46 African American ESRD patients participated in …

Three Essays On Capital Structure And Product Market Interactions, Ying Zheng

Theses and Dissertations

Capital structure can have important consequences for firm value. High leverage increases firms’ probability of bankruptcy, and is shown to be the primary cause of financial distress. As suggested by a strand of literature on capital structure and product market interactions, high leverage is costly because financial weakness could induce unfavorable actions by product market participants such as customers and competitors. While the costs of high leverage are well documented in the extant literature, little is known on the factors that influence the costs of high leverage. This dissertation addresses this gap in the literature by examining how the costs …

Assessment Of Patient Satisfaction With The Provision Of Fertility Information In Women With Lynch Syndrome, Rachel Elizabeth Hickey

Theses and Dissertations

Lynch Syndrome (LS), one of the most common hereditary cancer syndromes, is primarily known for its substantially increased risks for colorectal cancer. The incidence of gynecologic cancers (endometrial and ovarian cancers) equals or exceeds the incidence of colorectal cancers in female patients with LS. The prevention and treatment methods for these cancers can drastically affect fertility and reproduction. Previous studies with cancer patients have revealed challenges in acquiring information related to these topics; thus far, no research has assessed whether there is an informational gap regarding fertility information for women in the LS population. The purpose of this study was …

Environmental Negotiations Cherokee Power In The Arkansas Valley, 1812-1828, Cane West

Theses and Dissertations

In the early 19th century, the Arkansas River Valley existed as a borderlands region of powerful Indian nations and immigrant Euro-American and Native American settlers. In the resulting contests over settlement, Cherokee chiefs recreated the Arkansas Cherokees' ecological identity from hunters to agrarians to differentiate themselves from their Osage and white rivals. During the 1820s, Cherokee chiefs expanded on their agrarian rhetoric by appropriating American scientific systems in order to stymie white settlement. By the end of the 1820s, Arkansas Cherokee chiefs had infused their arguments of preferred agricultural lands, appropriate survey methods, and accurate cartography into the debates over …

Structural And Functional Studies Of Proteins From The Agricultural Pests Tetranychus Urticae And Aspergillus Fumigatus, Caleb Schlachter

Theses and Dissertations

Agricultural pests are a worldwide problem and cause billions of dollars in crop loss. In the United States alone, an estimated $40 billion USD is lost per year due to insecticide resistance [1]. Studied here are proteins (potentially new pesticide targets) from the agricultural pests Tetranychus urticae and Aspergillus fumigatus. T. urticae, or twospotted spidermite, is a polyphagous pest, and three proteins from this pest, a cyanase, a glutathione S-transferase and an intradiol ring-cleavage dioxygenase are described [2]. Cyanase is involved in the conversion of bicarbonate and cyanate, a toxic self-defense metabolite produced by plants, into ammonia and carbon dioxide. …

Adoptees’ Experiences With Direct-To-Consumer Genetic Testing: Emotions, Satisfaction, And Motivating Factors, Anna Childers

Theses and Dissertations

Public awareness of the role of genetics in disease continues to expand along with the use of direct-to-consumer genetic testing (DTC-GT). One subset of customers taking advantage of the growing DTC-GT market is adoptees. Prior research has shown that adoptees appear to be more motivated than non-adoptees to learn about their genetic disease risk but have similar responses to health-related information acquired through DTC-GT. In this exploratory qualitative study, fourteen adoptees were asked about their motivations for pursuing DTC-GT; satisfaction with results; emotions throughout the process; and interest in meeting with a genetic counselor. Motivations for pursuing DTCGT fell into …