Digital Commons Network^™

Quantification Of Aqp11 Paralog Expression In The Osmoregulatory Organs Of Anguilla Rostrata, Keith C. Kurt

College of Graduate Studies: Theses & Dissertations

Osmoregulation is facilitated by using an assortment of ion and water channels to assist acclimation to changing conditions and to maintain cellular homeostasis. Euryhaline fish can be found in both seawater and freshwater (SW and FW) environments. Expression of ion and water channels have been experimentally demonstrated to change as a fish acclimates to different environmental conditions. Relatively recently, a new group of water channels has been discovered that are primarily intracellular and includes aquaporin 11 (AQP11). Typically, AQPs are located on the cell plasma membrane to allow water to flow in and out of the cell by osmosis to …

Homological Constructions Over A Ring Of Characteristic 2, Michael S. Nelson

College of Graduate Studies: Theses & Dissertations

We study various homological constructions over a ring $R$ of characteristic $2$. We construct chain complexes over a field $K$ of characteristic $2$ using polynomials rings and partial derivatives. We also provide a link from the homology of these chain complexes to the simplicial homology of simplicial complexes. We end by showing how to construct all finitely-generated commutative differential graded $R$-algebras using polynomial rings and partial derivatives.

Does Emotion-Regulation Moderate Ostracism And Risk-Taking?, Serena K. Murphy Ms.

College of Graduate Studies: Theses & Dissertations

Ostracism, feeling excluded or ignored, has been associated with increased risk-taking behavior on a number of self-report and lab-based measures (Buelow & Wirth, 2017; Duclos, Wan, & Jiang, 2012; Falk et al., 2014; Svetieva et al. 2016). Anger mediates the relationship between ostracism and risk-taking (Svetieva et al., 2016), and it is possible that emotion-regulation strategies to reduce anger may minimize this relationship. However, research has yet to test if emotion-regulation strategies can reduce affective responses following ostracism. The purpose of the current study is to examine the effects of ostracism via Cyberball and emotion-regulation strategies on risk-taking behavior using …

Synthesis Of N-Heterocyclic Molecules And Their Applicability Towards Ion Sensing: Polymeric Chemosensors, Aikohi M. Ugboya

College of Graduate Studies: Theses & Dissertations

Critical to biological and environmental processes are anions because often times their relative concentration in our body can be an indicator of one’s well-being. Therefore, highly sensitive and cost-efficient methods for ions recognition is necessary for human health. In recent times, polymeric chemosensors have become a vital tool for sensing ions because of its higher sensitivity and good mechanical properties compared to their monomeric counterparts. These sensors are designed to produce a measurable response in the presence of a targeted ion such as an electrochemical or optical signal. The unique structure and the photophysical properties of the 1,2,3-triazole core coupled …

Effects Of Climate Variability: A Long-Term Perspective On Leaf Litter Processing In The Ogeechee River, Jose A. Sanchez

College of Graduate Studies: Theses & Dissertations

The Intergovernmental Panel for Climate Change (IPCC) predicts a rise in temperatures and changes to precipitation patterns for the 21^st century. These changes are expected to lead to a higher frequency of extreme events such as drought and floods which lead to the alteration of the hydrology, communities, and processes of freshwater ecosystems. Leaf litter decomposition in stream ecosystems is an important component of the energy and nutrient cycle representing a food source for aquatic organisms. This has made it a tool for assessing long term responses to disturbance due to changes in the assemblage of macroinvertebrates that …

Determining Political Inclination In Tweets Using Transfer Learning, Mehtab Iqbal

College of Graduate Studies: Theses & Dissertations

Last few years have seen tremendous development in neural language modeling for transfer learning and downstream applications. In this research, I used Howard and Ruder’s Universal Language Model Fine Tuning (ULMFiT) pipeline to develop a classifier that can determine whether a tweet is politically left leaning or right leaning by likening the content to tweets posted by @TheDemocrats or @GOP accounts on Twitter. We achieved 87.7% accuracy in predicting political ideological inclination.

Waste Management Of Highway Right Of Way Areas In Southeast Georgia, David M. Penn Ii

College of Graduate Studies: Theses & Dissertations

Maintenance of highway right of way (ROW) areas has become problematic during the last several years due to the high cost, and little to no economic return associated with disposing vegetation waste that is continuously generated on all highways and interstates across the state of Georgia. The Georgia Department of Transportation (GDOT) was interested in evaluating the feasibility of replacing ROW vegetation of highways throughout the state with high-value alternatives such as switchgrass (Panicum virgatum L. ‘Alamo’), big bluestem (Andropogon gerardii) and woodland sunflower (Helianthus divaricatus). Preliminary objective involved measuring and mapping SOC and soil N concentrations in the highway …

Computer Vision-Based Traffic Sign Detection And Extraction: A Hybrid Approach Using Gis And Machine Learning, Zihao Wu

College of Graduate Studies: Theses & Dissertations

Traffic sign detection and positioning have drawn considerable attention because of the recent development of autonomous driving and intelligent transportation systems. In order to detect and pinpoint traffic signs accurately, this research proposes two methods. In the first method, geo-tagged Google Street View images and road networks were utilized to locate traffic signs. In the second method, both traffic signs categories and locations were identified and extracted from the location-based GoPro video. TensorFlow is the machine learning framework used to implement these two methods. To that end, 363 stop signs were detected and mapped accurately using the first method (Google …

Livestock Guardian Dogs And Cattle Protection: Opportunities, Challenges, And Methods, Cat D. Urbigkit

Human–Wildlife Interactions

Producer interest in using livestock guardian dogs (Canis lupus familiaris; LGDs) to protect domestic cattle (Bos taurus) is driven by expanding large carnivore predator populations and increased public concerns regarding lethal predator control in North America. However, few resources exist to guide livestock producers regarding the use of LGDs to protect cattle. This paper summarizes published information and personal ranch experiences regarding the use of LGDs to protect cattle, describes livestock-producer identified challenges to more widespread adoption of this method to deter predators, and provides guidelines for introducing pups to LGD-naïve cattle herds. I recommend more …

Emotional Intelligence Instruction For Millennials In Undergraduate Education, Jason M. Pollett

College of Graduate Studies: Theses & Dissertations

The purpose of this study was to examine the improvement, if any, of emotional intelligence scores of students who participated in and completed the specified professional development seminar. In addition, this study aimed to examine the relationship between emotional intelligence subscales of students enrolled in a professional development seminar that focuses on enhancing the emotional intelligence. The research design for this study was an ex post facto, quasi-experimental correlational quantitative research design. Data from the 371 students who enrolled in the Professional Development Seminar course during academic years 2015-2017 served as the sample for this study.

This study focused on …

Computing The Role That Women Hold In The Technology And Computing Fields, Rachel L F Mccombs

College of Graduate Studies: Theses & Dissertations

This research was conducted as a thesis project to study what roles women have played in information technology over time, how those roles have changed over time, and what caused those roles to change. It was also to study how personal life experiences may have affected their roles and careers in the technology field. Influential women in IT of the past were studied and compared to determine any common factors between them.

Essays On Mixture Models, Trevor R. Camper

College of Graduate Studies: Theses & Dissertations

When considering statistical scenarios where one can sample from populations that are not of interest for the purposes of a study, bivariate mixture models can be used to study the effect that this missampling can have on parameter estimation. In this thesis, we will examine the behavior that bivariate mixture models have on two statistical constructs: Cronbach's alpha \cite{C51}, and Spearman's rho \cite{S04}. Chapter 1 will introduce notions of mixture models and the definition of bias under mixture models which will serve as the central concept of this thesis. Chapter 2 will investigate a particular psychometric issue known as insufficient …

Inverse Problems Related To The Wiener And Steiner-Wiener Indices, Matthew Gentry

College of Graduate Studies: Theses & Dissertations

In a graph, the generalized distance between multiple vertices is the minimum number of edges in a connected subgraph that contains these vertices. When we consider such distances between all subsets of $k$ vertices and take the sum, it is called the Steiner $k$-Wiener index and has important applications in Chemical Graph Theory. In this thesis we consider the inverse problems related to the Steiner Wiener index, i.e. for what positive integers is there a graph with Steiner Wiener index of that value?

The Role Of Local Adaptation On Biting Performance In Trinidadian Guppies, Hannah E. Cohen

College of Graduate Studies: Theses & Dissertations

Divergent selection pressures in populations that occupy different environments can result in phenotypic differentiation in traits that provide a local fitness advantage. Trinidadian guppy (Poecilia reticulata) populations are separated by physical barriers such as waterfalls which result in repeated shifts in selective pressures from predator avoidance in high predation environments towards resource competition in low predation environments. Such shifts in selection pressures have previously shown that a range of locally adapted morphological and behavioral traits are changed. However, the role of local adaptation on biting behaviors remains unclear. I analyzed morphological differences such as body length, jaw position, …

Legal Sets, Jeremy N. Sheff

Faculty Publications

In this Article, I propose that the practices of legal reasoning and analysis are helpfully understood as being primarily concerned not with rules or propositions, but with sets. This Article develops a formal model of the role of sets in the practices of legal actors in a common-law system defined by a recursive relationship between cases and rules. In doing so, it demonstrates how conceiving of legal doctrines as a universe of discourse comprising (sometimes nested or overlapping) sets of cases can clarify the logical structure that governs marginal cases and help organize the available options for resolving such cases …

A Finite Element Solution Of Bergan-Wang Plate Model, Kamal Hassan Prof., Ehab Ali, Ehab Ali

Basic Science Engineering

Abstract. Bergan-Wang approach has led to a formulation of the strain energy of a plate bending deflection as function of only the transversal deflection of the plate. In this paper, two rectangular plate bending finite elements are introduced, using new degrees of freedom based on Bergan-Wang approach for analysis of thin, moderately thick plates, in terms of this unique variable. The first element has four nodes with 24 DOF while the second has 36 DOF. These two elements are conforming in case of thin plates. Adopting the usual 3 boundary conditions of Reissner-Mindlin theory, variety of examples have been analyzed …

Editors' Notes, Debra Miretzky, Sharon Stevens, Chase Catalano, Krista Bowers-Sharpe, Mahrya Carncross

Mid-Western Educational Researcher

Editors' Notes

Status, Equity, And Group Learning In Middle School Math: "I'M Not That Smart.", Kate Carter

Mid-Western Educational Researcher

Teaching middle school mathematics, I have found that classroom dynamics have a profound impact on the quality of mathematical discussion. Wanting to improve classroom discussion in order to better facilitate both small-group and student-driven learning, I started the school year by randomly grouping students every week for their small groups. I then studied student interactions and perceptions of student status, as well as my facilitation of group discussion over the course of the year. In this article, I describe my deep dive into student relationships, classroom culture, and mathematical discourse for one class of seventh grade students.

Taking College Teaching Seriously: Pedagogy Matters!, Frank Giuseffi

Mid-Western Educational Researcher

Book Review

The Use Of Video Reflection For Teacher Education And Professional Learning, Scott Gibbons, Amy N. Farley

Mid-Western Educational Researcher

The literature base is clear that when teachers reflect on their practice, they can identify areas of strength and areas of growth—both of which can improve the quality of their teaching (Jaeger, 2013). However, the realities of teaching today often mean teachers have many competing responsibilities and very little time between classes and after school for professional learning and development. Many teachers do not have the opportunity to reflect on their practice until hours or days after teaching a lesson or activity. By incorporating video into a teacher’s reflective practices, the teacher can revisit the lesson or activity as if …

Examining The Instructional Priorities Of A Secondary Education Teacher Preparation Program Utilizing An Integrated Approach To Assessment Education, Daniel M. Frederking

Mid-Western Educational Researcher

This study examined the instructional priorities of a four-year undergraduate secondary education program that does not offer an assessment-specific course, but instead integrates assessment instruction throughout the broader curriculum. An alignment method was utilized to better understand the program’s instructional priorities for teaching about assessment in comparison to the locally-used professional teaching standards and the locally-used teacher accreditation performance assessment. Areas of both alignment and misalignment were found in three dimensions: categorical concurrence (CC), depth of knowledge (DOK), and range of knowledge (ROK). Findings include course syllabi objectives that were written at a broader ROK level than the other two …

Transparent Authentication Utilising Gait Recognition, Hind K Al-Obaidi

School of Engineering, Computing and Mathematics Theses

Securing smartphones has increasingly become inevitable due to their massive popularity and significant storage and access to sensitive information. The gatekeeper of securing the device is authenticating the user. Amongst the many solutions proposed, gait recognition has been suggested to provide a reliable yet non-intrusive authentication approach – enabling both security and usability. While several studies exploring mobile-based gait recognition have taken place, studies have been mainly preliminary, with various methodological restrictions that have limited the number of participants, samples, and type of features; in addition, prior studies have depended on limited datasets, actual controlled experimental environments, and many activities. …

Graphene/Silicon Schottky Junction Solar Cells With High Efficiency, Ahmed Suhail

School of Engineering, Computing and Mathematics Theses

Silicon p-n junction solar cells have a power conversion efficiency (PCE) up to 12%. Graphene, which has unique properties is an excellent material for solar cells with the potential to achieve higher PCEs. Since 2009, researchers have started to integrate CVD-graphene with Si substrates to develop Schottky junction solar cells with potentially higher PCE. However, there are several challenges remaining in designing and fabricating these cells. In this project, a novel graphene/Si Schottky junction solar cell with a back-contact structure was fabricated to increase the active area and also enable a texturing process to be implemented on the front of …

Fatigue Crack Growth Of Recycled Rubber In Natural Rubber/Butadiene Rubber Blends, Dayang Habibah Binti Abang Ismawi Hassim

School of Engineering, Computing and Mathematics Theses

Ground rubber from waste tyres may be added to elastomers to provide economic and environmental benefits. Both untreated and treated fillers have been investigated in different types of virgin rubber matrix. A principal concern is their crosslinked structure and large particle sizes. These additional fillers introduce flaws corresponding to micro-crack initiation sites especially under dynamic loading. Smaller particles, incorporated at a suitable concentration, may alleviate reduction of key mechanical properties. Many studies involving recycled rubber powder (RRP), untreated or treated materials, focus mainly on the quasi-static mechanical properties; generally few works examine the fatigue life and fracture morphology. In this …

Evaluation And Enhancement Of Public Cyber Security Awareness, Faisal Fahad G Alotaibi

School of Engineering, Computing and Mathematics Theses

With the spread of the Internet and the technology, Cyberspace has become the life of everyone, which requires them to be aware of the threats of it. Also, to be prepared with the speed of the technology, whether electronic payment, social life, leisure work IOT، and everything. However, in spite of increasing security practices there has been a rise in the cyber security threats and attacks. As the life is becoming more and more dependent on the technology, the need for cyber security awareness has become an important activity that need to be practiced in order to be safe and …

An Investigation Into How Teachers Develop Connected Approaches To School Mathematics, Nicola Jane Trubridge

School of Engineering, Computing and Mathematics Theses

This thesis details the longitudinal case study of a mathematics department as they implemented aspects of the Collaborative Connected Classroom (CCC) Model, a literature informed framework exemplifying teaching for understanding. The CCC Model describes the nature of mathematical activity as: activities build on learners’ prior knowledge; tasks connect different areas of mathematics or connect different ideas using multiple representations; links are made between procedures and concepts; tasks involve making comparisons and application tasks are presented as challenges. A CPD programme was designed to demonstrate the CCC Model to the department through a series of engaging, challenging and inspiring activities. Then, …

Using Virtual Reality And Web Conferencing Technologies: Exploring Alternatives For Microteaching In A Rural Region, Raymond A. Dixon, Cassidy Hall, Farjahan Shawon

Northwest Journal of Teacher Education

Preservice teachers’ views of two types of technologies which provided realistic environments in which to practice microteaching are described: (1) TLE TeachLivE™ Lab, a virtual reality environment that employs avatars as students in a virtual classroom, and (2) web conferencing technology to synchronously teach students in remotely located classrooms. Preservice teachers opined that each technology offers a relatively realistic environment that allows them to interact with virtual and real students. Microteaching through these technologies increases their self-confidence and provided a safe, non-threatening environment for them to reflect on their practice. We concluded these emerging technologies can provide viable alternatives to …

Crystal Structure, Magnetism And Magnetocaloric Properties Of Mn2−XSn0.5Ga0.5 (X=0, 0.3, 0.5, 0.8) Alloys, H. Qian, Rabindra Pahari, K. Schroeder, Shah R. Valloppilly, Y. Huh, Pavel V. Lukashev, J. Hu, Parashu Kharel, David J. Sellmyer

Nebraska Center for Materials and Nanoscience: Faculty Publications

Magnetic refrigeration based on the magnetocaloric effect has attracted recent attention due to advantages such as high efficiency and environmental friendliness. We have investigated the structural, magnetic and magnetocaloric properties of Mn_2−xSn_0.5Ga_0.5 (x=0, 0.3, 0.5, 0.8) alloys prepared using arc-melting and meltspinning techniques with prospects for magnetic refrigeration. The Mn_2−xSn_0.5Ga_0.5 alloys, except for Mn_1.2Sn_0.5Ga_0.5, have a single-phase hexagonal crystal structure. The Mn_1.2Sn_0.5Ga_0.5 alloy also contains a small amount of MnSn₂ impurity phase. The Curie temperature and high-field (30 kOe) …

2019-2020 Lindenwood University Trimester Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University Trimester Course Catalog

2019-2020 Lindenwood University-Belleville Course Catalog, Lindenwood University

Course Catalogs

Lindenwood University-Belleville Course Catalog