Digital Commons Network^™

Gravity Wave And Turbulence Transport In The Mesopause Region, Yafang Guo

Doctoral Dissertations and Master's Theses

Vertical transport due to dissipating gravity waves and turbulence in the mesopause region (85-100 km) are analyzed with observational data obtained from a narrow-band sodium wind/temperature lidar located at Andes Lidar Observatory (ALO), Cerro Pach´on (30.25 S, 70.73 W), Chile. The Na lidar at ALO has been in regular operation since 2010. The upgrade of the lidar system in May 2014 resulted in great improvements of the signal levels, which enabled data acquisition of high temporal and vertical resolutions reaching 6 s and 25 m. Traditional data processing utilizes signals at lower resolutions, typically at 60 s and 500 m, …

Making Meaning: Towards A Narrative Theory Of Statutory Interpretation And Judicial Justification, Randy D. Gordon

Faculty Scholarship

The act of judging is complex involving finding facts, interpreting law, and then deciding a particular dispute. But these are not discreet functions: they bleed into one another and are thus interdependent. This article aims to reveal-at least in part-how judges approach this process. To do so, I look at three sets of civil RICO cases that align and diverge from civil antitrust precedents. I then posit that the judges in these cases base their decisions on assumptions about RICO's purpose. These assumptions, though often tacit and therefore not subject to direct observation, are nonetheless sometimes revealed when a judge …

Allelic Variants Of Oshkt1;1 Underlie The Divergence Between Indica And Japonica Subspecies Of Rice (Oryza Sativa) For Root Sodium Content, Malachy T. Campbell, Nonoy Bandillo, Fouad Razzaq A. Al Shiblawi, Sandeep Sharma, Kan Liu, Qian Du, Aaron J. Schmitz, Chi Zhang, Anne-Alienor Very, Aaron J. Lorenz, Harkamal Walia

Department of Agronomy and Horticulture: Faculty Publications

Salinity is a major factor limiting crop productivity. Rice (Oryza sativa), a staple crop for the majority of the world, is highly sensitive to salinity stress. To discover novel sources of genetic variation for salt tolerance-related traits in rice, we screened 390 diverse accessions under 14 days of moderate (9 dS m^-1) salinity. In this study, shoot growth responses to moderate levels of salinity were independent of tissue Na⁺ content. A significant difference in root Na+ content was observed between the major subpopulations of rice, with indica accessions displaying higher root Na⁺ and japonica …

Genotype, Environment, Seeding Rate, And Top-Dressed Nitrogen Effects On End-Use Quality Of Modern Nebraska Winter Wheat, Madhav Bhatta, Teshome Regassa, Devin J. Rose, P. Stephen Baenziger, Kent M. Eskridge, Dipak K. Santra, Rachana Poudel

Department of Agronomy and Horticulture: Faculty Publications

Background: Fine-tuning production inputs such as seeding rate, nitrogen (N), and genotype may improve end-use quality of hard red winter wheat (Triticum aestivium L.) when growing conditions are unpredictable. Studies were conducted at the Agronomy Research Farm (ARF; Lincoln, NE, USA) and the High Plains Agricultural Laboratory (HPAL; Sidney, NE, USA) in 2014 and 2015 in Nebraska, USA, to determine the effects of genotype (6), environment (4), seeding rate (3), and flag leaf top-dressed N (0 and 34 kg N ha⁻¹) on the end-use quality of winter wheat.

Results: End-use quality traits were influenced by environment, genotype, …

The Strange Case Of Dr. Jekyll's Will: A Tale Of Testamentary Capacity, Stephen R. Alton

Faculty Scholarship

Robert Louis Stevenson’s classic novella, The Strange Case of Dr. Jekyll and Mr. Hyde, published in 1886, is the well-known tale of a respected scientist (Dr. Henry Jekyll) who transforms himself into an evil-doer (Mr. Edward Hyde). While the work raises issues of tort and criminal liability, this article analyzes the legal issues presented by one particular and crucial plot device that Stevenson employs—the last will of Dr. Jekyll. This will so obsesses Jekyll’s friend and solicitor, Gabriel John Utterson (through whose eyes the story unfolds), that he is impelled to seek the truth behind his friend’s relationship to Hyde. …

Linking A Dermal Permeation And An Inhalation Model To A Simple Pharmacokinetic Model To Study Airborne Exposure To Di(N-Butyl) Phthalate, Matthew Lorber, Charles J. Weschler, Glenn Morrison, Gabriel Bekö, Mengyan Gong, Holger M. Koch, Tunga Salthammer, Tobias Schripp, Jørn Toftum, Geo Clausen

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Six males clad only in shorts were exposed to high levels of airborne di(n-butyl) phthalate (DnBP) and diethyl phthalate (DEP) in chamber experiments conducted in 2014. In two 6 h sessions, the subjects were exposed only dermally while breathing clean air from a hood, and both dermally and via inhalation when exposed without a hood. Full urine samples were taken before, during, and for 48 h after leaving the chamber and measured for key DnBP and DEP metabolites. The data clearly demonstrated high levels of DnBP and DEP metabolite excretions while in the chamber and during the first 24 h …

Using An Active-Optical Sensor To Develop An Optimal Ndvi Dynamic Model For High-Yield Rice Production (Yangtze, China), Xiaojun Liu, Richard B. Ferguson, Hengbiao Zheng, Qiang Cao, Yongchao Tian, Weixing Cao, Yan Zhu

Department of Agronomy and Horticulture: Faculty Publications

The successful development of an optimal canopy vegetation index dynamic model for obtaining higher yield can offer a technical approach for real-time and nondestructive diagnosis of rice (Oryza sativa L) growth and nitrogen (N) nutrition status. In this study, multiple rice cultivars and N treatments of experimental plots were carried out to obtain: normalized difference vegetation index (NDVI), leaf area index (LAI), above-ground dry matter (DM), and grain yield (GY) data. The quantitative relationships between NDVI and these growth indices (e.g., LAI, DM and GY) were analyzed, showing positive correlations. Using the normalized modeling method, an appropriate NDVI simulation model …

Assessing Patient And Caregiver Intent To Use Mobile Device Videoconferencing For Remote Mechanically-Ventilated Patient Management, Brian R. Smith

Master's Theses and Doctoral Dissertations

The Michigan Medicine adult Assisted Ventilation Clinic (AVC) supports patients with neuromuscular disorders and spinal cord injuries and their caregivers at home, helping them avoid expensive emergency department visits, hospitalization, and unnecessary or excessive treatments. Mobile device videoconferencing provides an effective capability for remote mechanically-ventilated patient management but must rely upon an unknown infrastructure comprising patient and caregiver mobile device ownership, connectivity, and experience—and intent to use the service if provided. The purpose of this study was to measure the extent of this infrastructure and the perceived ease of use, perceived usefulness, and intent to use this mobile device …

How Might Active Video Gaming Affect Physical Activity And Physical Fitness Of Students With Intellectual Disabilities?, Mark E. Davis

Master's Theses and Doctoral Dissertations

In the United States, there has been increasing concern about the obesity crisis. A large factor in this crisis is physical inactivity, which may have detrimental effects on an individual’s health. Participation in physical activity is essential to preventing and reducing obesity and may positively affect physical fitness. Researchers have begun to look at a newer form of video gaming called active video gaming (AVG), which is a physically interactive video game that helps individuals stand up and move. The purpose of this research study was to examine what effects active video gaming has on physical activity and physical fitness …

The Anticancer Effects Of The Different Analogs Of Cysteine Deleted Tachyplesin On A549 Lung Cancer Cells, Nathan Riley Hendrickson

Master's Theses and Doctoral Dissertations

It has been previously shown that cysteine-deleted tachyplesin (CDT) and its many analogs display antibacterial effects. However, little has been said about its possible anticancer effects and which analogs serve as the best inhibitors of the growing cancer cells. This research focused on CDT and four of its analogs: All D-CDT, Reverse DCDT, Reverse CDT, and Serine-Control CDT. MTT assays against the A549 adenocarcinoma lung cancer cell line showed All D-CDT to be the most effective analog in preventing cancer cell growth. Hyaluronidase and apoptosis assays were performed to better understand the mechanism by which the All D-CDT is preventing …

Predictability Of Vo2max Using A Commercially Available Gps Sports Watch, Andrew Pearson

Master's Theses and Doctoral Dissertations

Using accurate submaximal methodologies to estimate VO_2max is a convenient alternative to maximal exercise testing. Submaximal testing is practical because it provides a cheaper, more time-efficient method to determine VO_2max and allows a wider range of individuals to be tested. Purpose: The purpose of this study was to examine the predictability of VO_2max using a GPS sports watch. Methods: Thirty participants, 16 males and 14 females between the ages of 18 and 55, volunteered for this study. A total of three separate VO_2max values were recorded during the study: (a) directly measured VO_2max, (b) …

Validating Non-Motivated Methods And Equipment For Studying Mouse Olfactory Behavior, Michael Andrew Dryden

Master's Theses and Doctoral Dissertations

Mouse olfactory behavior has traditionally been difficult to assess due, in part, to the expensive nature of behavioral equipment and the lengthy process of training animals. The present study aims to validate a new behavioral paradigm requiring no prior animal training using existing liquid dilution behavioral olfactometers. We also aim to validate Triton-100x, a detergent, as a new anosmia inducing agent, as well as self-built, Do-it-yourself (DIY) behavioral olfactometers. Equipment and methods were tested using a variety of common-discrimination and detectionthreshold assays. Difficulties maintaining stimulus control arose during testing as mice routinely detected volume-to-volume concentrations of amyl acetate diluted in …

Parental Health, Parenting Behavior And Externalizing Behavior Problems Among Low-Income African American Preschool Children, Cassandra Lynn Esposito

Master's Theses and Doctoral Dissertations

Externalizing behavior problems are highly prevalent in the preschool years. These behaviors are particularly common and problematic among children who are from low-income, minority backgrounds. There is evidence in the literature that describes parental health and parenting problems as risk factors for child externalizing behavior problems. The primary objective of this study was to better understand the relationship between parental health factors, parenting, and child behavior problems. Utilizing data from a low-income African American population, this study examined whether observed measures of parenting behaviors mediated the relationship between measures of parental health (e.g., depression, stress, and BMI) and child externalizing …

Decision-Making, Tacit Knowledge, And Motivation In Semi-Professional Practice: Humanizing The Environment Through Anthropomorphism In Clinical Laboratory Science, Teresa Mortier

Master's Theses and Doctoral Dissertations

The clinical laboratory science field requires an abundance of technical knowledge; however, the importance of implicit or tacit knowledge gained through observation and practice is often discounted in this field, even though it is a critical part of reflective thinking, critical thinking, and reflective practice. The “de-skilling” of laboratory practitioners may be a result of limited training opportunities in an overtaxed system. A deeper analysis of the decision-making skills by interviewing practicing medical laboratory scientists in this study may illuminate, for practitioners and the public sector, the complexity of the profession. This study adds to the body of knowledge in …

Exploring Factors That Affect Adoption Of Computer Security Practices Among College Students, Amani Alqarni

Master's Theses and Doctoral Dissertations

Cyber-attacks threaten the security of computer users’ information, networks, machines, and privacy. Studies of computer security education, awareness, and training among ordinary computer users, college students, non-IT-oriented user groups, and non-technically trained citizens are limited. Most research has focused on computer security standards and guidelines in organizational contexts. Few studies have analyzed the predictors of college students’ adoption of computer security practices. Based on a comprehensive literature review, researchers have relied heavily on well-established behavioral theories, such as the technology acceptance model (TAM), theory of planned behavior (TPB), and protection motivation theory (PMT) to explain the variation in adoption of …

Sex Offender Registry Acts: Deterrence Or Moral Panic?, Daniel J. Wood

Master's Theses and Doctoral Dissertations

Sex offender registries were created as a means for law enforcement to track rapists and pedophiles to help quickly resolve sex cases. It evolved into a much larger system with many consequences. This evolution has been hastened by a moral panic based on bad facts and fueled by strong public opinion in favor of long prison sentences and even longer registration periods. Modern laws have little to do with monitoring and more to do with retribution. Proponents claim these penalties are a means to deter sex offenses, but very little research supports this contention. Instead, the registries and the media …

Perceptions Of Cultural Competency Skills Among Professional Housing And Residential Life Staff At Postsecondary Institutions, William Washington Iii

Master's Theses and Doctoral Dissertations

Student demographics on college campuses continues to change. The globalization of the student population brings challenges to providing optimal services from staff throughout higher education and particularly from professional housing and residential life (HRL) staff, who may be the first level of support for many students. The purpose of this quantitative study was to understand HRL staffs’ perceptions about their ability to support diverse students. Responses to the Multicultural Competence for Student Affairs Preliminary 2 scale (MCSA-P2) survey instrument provided a basis to compare the level of cultural competence of HRL staff across six demographic variables: gender, age, ethnicity, professional …

Curriculum Implementation: A Phenomenological Study Of A Reading Curriculum Adoption And Power Relationships In One School District, Lester Culver Sharon Jr.

Master's Theses and Doctoral Dissertations

Understanding the underlying issues that drive the success or failure of curriculum enactments is an important step in redesigning school reform efforts. This paper describes a phenomenological study of five elementary teachers as they participated in the selection and enactment of a new reading curriculum for a period of two and a half years. Steven Searle’s theory on status functions and the role that binding operational decisions and language play within social systems describes the process by which attenuating mythologies arise and ultimately threaten the viability of curriculum initiatives. The connection between status functions, the leaders that declare them and …

Memorable Family Narratives, Brandon Larkins

Master's Theses and Doctoral Dissertations

Memorable narratives are highly under-studied in the world of family communication. By understanding what memorable messages entail and what a story is, we can bridge that gap and explain a narrative. In this study, 13 participants were recruited and interviewed. Only participants over the age of 18 years were recruited. The ages of the participants ranged from 22 and 49 years old. Seven of the 13 participants identified as female, and the remaining 6 participants identified as male. Of the 13 participants, 11 identified as Caucasian, 1 identified as African-American, and 1 identified as Asian. From these participants, three themes …

Shifts In Microbial Communities In Soil, Rhizosphere And Roots Of Two Major Crop Systems Under Elevated Co2 And O3, Peng Wang, Ellen L. Marsh, Elizabeth A. Ainsworth, Andrew D. B. Leakey, Amy M. Sheflin, Daniel P. Schachtman

Department of Agronomy and Horticulture: Faculty Publications

Rising atmospheric concentrations of CO₂ and O₃ are key features of global environmental change. To investigate changes in the belowground bacterial community composition in response to elevated CO₂ and O₃ (eCO₂ and eO₃) the endosphere, rhizosphere and soil were sampled from soybeans under eCO2 and maize under eO₃. The maize rhizosphere and endosphere α-diversity was higher than soybean, which may be due to a high relative abundance of Rhizobiales. Only the rhizosphere microbiome composition of the soybeans changed in response to eCO₂, associated with an increased abundance of nitrogen …

An Exploration Of The Aspects Of Physical Activity And Exercise Motives That Confer Risk Versus Protection From Disordered Eating Outcomes, Megan Pejsa-Reitz

Master's Theses and Doctoral Dissertations

A long-standing health initiative has been the recommendation for individuals to engage in regular physical activity because of its numerous physical and mental health benefits. However, engaging in “excessive exercise” is a compensatory behavior found in eating disorders. The present study sought to better understand exercise as both a health- and risk-behavior. Undergraduates (N = 1010) completed an online survey assessing disordered eating and exercise behavior. Results revealed that among individuals who engaged in a low level of physical activity, exercising for socializing reasons conferred risk for disordered eating, whereas higher socializing exercise motives were associated with lower disordered …

The External Microbiome Of Bats: Effects Of Season, Site, Host Species, And Body Region, Kyle G. George

Master's Theses and Doctoral Dissertations

White-nose syndrome is a cutaneous fungal disease that has been detrimental to North American bats for over 10 years, but few investigators have examined the natural microbiota living on these mammals. I explored the influence of season, geographic site, host species, and body region on the external microbiome of four cave-hibernating and two migratory species. Automated ribosomal intergenic spacer analysis was used to profile bacterial communities from three cutaneous regions of 222 bats across winter and summer sites in Michigan, Illinois, and Kentucky. Season, site, host species, and body region all influenced the composition of external bacterial communities, but geographic …

Perceived Credibility Of Child Witness Statements Based On Age And Gender, Beverly M. Griffor

Master's Theses and Doctoral Dissertations

Although a great deal of empirical research and theoretical analysis has been done on in relation to jury perception of the credibility of child witnesses, virtually none of it has focused on the impact of age and gender of child witnesses alone on juror perceptions. This study expands on the existing body of knowledge on juror bias by exploring the connection between the perceived credibility of a child witness and the age or gender of that witness. Participants were given a choice between two children of different ages and/or genders. The participants were asked about the believability of the identified …

The Effect Of Organization Centralization, Organization Climate, Knowledge Management And Supply Chain Integration Perception On The Success Of Product Launch In The U.S. Automotive Industry, Raed Jalal Anabtawi

Master's Theses and Doctoral Dissertations

This study examines variables that may affect new product launches in the automotive industry. The automakers need to have capabilities to address product launch issues when converting their efforts into automotive products that meet consumer requirements. The aim of this study was to investigate the effect of organization centralization, organizational climate, knowledge management, and supply chain integration perception on the success and effectiveness of a product launch. The survey samples consisted of 101 respondents from automotive companies. Organization centralization perception, where decisions are made solely by upper management, had no significant correlation to the success of product launch. Analysis of …

Examining The Moderating Effects Of Racial Socialization On Teacher Discrimination For The Psychological Outcomes Of Black Middle School Girls, Kayla Nichols

Electronic Theses and Dissertations

A hierarchical multiple regression was used to understand the 1) the predictive ability of teacher discrimination on racial identity, 2) the predictive ability of teacher discrimination and racial identity on the educational beliefs and psychological outcomes of early adolescent Black girls, and 3) if egalitarian messages of racial socialization moderate the risk of teacher discrimination on the psychological outcomes for early adolescent Black girls. Participants were 8th grade Black girls from Wave 3 of the MADICS dataset (Eccles, 2010). Results showed that teacher discrimination had a negative relationship and predicted 5% of the variance in connection to heritage, educational beliefs, …

A Review Of 'Big Data' Variable Selection Procedures For Use In Predictive Modeling, Sarah Papke

Electronic Theses and Dissertations

Several problems arise when attempting to use traditional predictive modeling techniques on ‘big data.’ For instance, multiple linear regression models cannot be used on datasets with hundreds of variables. However several techniques are becoming common tools for selective inference as the need for analyzing big data increases. Forward selection and penalized regression models (such as LASSO, Ridge Regression, and Elastic Net) are simple modifications of multiple linear regression that can provide some guidance on simplifying a model through variable selection. Dimension reducing techniques, such as Partial Least Squares and Principal Components Analysis, are more complex than regression but have the …

Self-Efficacy And The Interaction Model As Predictors Of Student Satisfaction And Perceived Learning In Online Learning Environments, Emtinan Alqurashi

Electronic Theses and Dissertations

This study aimed to explore the relationship between four predictor variables (online learning self-efficacy, learner-content interaction, learner-instructor interaction, and learner-learner interaction) and student satisfaction and perceived learning. The purpose of this study was to investigate the extent to which the four variables are predictive of student satisfaction and perceived learning. A total of 167 students completed the survey; the survey assessed self-efficacy for completing an online course, interaction with the content, interaction with the course instructor, interaction with other students, student satisfaction, and perceived learning within an online learning environment. The independent variables were self-efficacy, learner-content interaction, learner-instructor interaction, and …

Using Educational Data Mining Techniques To Analyze The Effect Of Instructors’ Lms Tool Use Frequency On Student Learning And Achievement In Online Secondary Courses, Jonathan Barkand

Electronic Theses and Dissertations

The pedagogy of teaching and learning has been changing since computers were first integrated into the classroom. As technology evolves, the evaluation of the instructional tool’s effectiveness will continue to be an area of research need. The effectiveness of an instructional tool can be measured by student learning and achievement. Student learning and achievement was found to be most effective when the characteristics of active learning/engagement, frequent interaction, and feedback were present. The presence is provided by the instructor. Chickering and Gamson (1987) developed the Seven Principles for Good Practice (SPGP) in Undergraduate Education to improve teaching and learning.

The …

The Effects Of Parenthood, Gender, And Gender Ideology On The Support For Paid Parental Leave, Amira Allen

Theses and Dissertations

In 2015, 61.4 percent of women and 94.5 percent of men with children three and under were in the labor force. Both working mothers and fathers report higher levels of stress balancing work and family life than they did twenty-five years ago, and many mothers and fathers would like to cut back on their work hours. The Family Medical Leave Act (FMLA) gives eligible employees of covered employers the option to take unpaid job-protected leave for specified family and medical reasons, such as parental leave. Though FMLA applies to both parents, it is more common for maternity leave to occur …

Use Of Foqa Data To Estimate The Probability Of Vehicle Upset Or Loss Of Control In-Flight, Shelby Balogh

Theses and Dissertations

The leading cause of fatal aviation accidents worldwide remains loss of control in-flight, whereby control of the aircraft is lost or the aircraft enters an extreme deviation from the intended flight path (LOC-I). The primary purpose of the research contained herein is to evaluate a purposed methodology of analyzing FOQA/FDM data recorded by a typical TAA general aviation aircraft in order to predict the probability that a vehicle upset or loss of control in-flight could occur. Probability values obtained from the purposed methodology could be used for root cause analysis of high risk occurrences and to assist in the development …