Digital Commons Network^™

Performance Evaluation Of Communication Technologies And Network Structure For Smart Grid Applications, Desong Bian, Murat Kuzlu, Manisa Pipattanasomporn, Saifur Rahman, Di Shi

Engineering Technology Faculty Publications

The design of an effective and reliable communication network supporting smart grid applications requires the selection of appropriate communication technologies and protocols. The objective of this study is to study and quantify the capabilities of an advanced metring infrastructure (AMI) to support the simultaneous operation of major smart grid functions. These include smart metring, price-induced controls, distribution automation, demand response, and electric vehicle charging/discharging applications in terms of throughput and latency. OPNET is used to simulate the performance of selected communication technologies and protocols. Research findings indicate that smart grid applications can operate simultaneously by piggybacking on an existing AMI …

Exposing Students To Stem Careers Through Hands-On Activities With Drones And Robots, Vukica M. Jovanović, George Mcleod, Thomas E. Alberts, Cynthia Tomovic, Otilia Popescu, Tysha Batts, Ms. Mary Louise Sandy

Engineering Technology Faculty Publications

Autonomous robots have been used in a variety of ways from collecting specimen in hazardous environments to space exploration. These robots can be found in various manufacturing systems as Autonomous Guided Vehicles (AGVs) to transport parts and assemblies throughout the manufacturing system. They have also been used as a vehicle to convey design thinking and other STEM-related concepts in mechanical engineering/mechanical engineering technology, electrical engineering/electrical engineering technology, computer science, and computer engineering. Various outreach events have included robotics based activities that engage students in building and programming autonomous robots for the purpose of achieving a specific task. These events are …

Service To Older Adults: Defining The A, B, C Of Reference Interchange, Kay Coates

University Libraries: Faculty Presentations

Presentation given at 2019 Atlanta Area Bibliographic Instruction Group (AABIG) Conference

Older adult library patrons often surface with unique research needs. This presents opportunities to serve this population of users through relationship building, knowledge-based content, and access privileges. Employing empathy, design, and ideation from a design thinker’s toolkit can equip libraries to support this diverse group of learners whose information needs range from leisurely bylines, life-long learning, ancestral pursuits or other avocation. Design thinking solutions enable librarians to engage in effective reference transactions that satisfy these and other users. Successful user experience comes down to the A, B, and C …

Reliability Estimation Of Reciprocating Seals Based On Multivariate Dependence Analysis And It's Experimental Validation, Chao Zhang, Rentong Chen, Shaoping Wang, Yujie Qian, Mileta M. Tomovic

Engineering Technology Faculty Publications

Accurate reliability estimation for reciprocating seals is of great significance due to their wide use in numerous engineering applications. This work proposes a reliability estimation method for reciprocating seals based on multivariate dependence analysis of different performance indicators. Degradation behavior corresponding to each performance indicator is first described by the Wiener process. Dependence among different performance indicators is then captured using D-vine copula, and a weight-based copula selection method is utilized to determine the optimal bivariate copula for each dependence relationship. A two-stage Bayesian method is used to estimate the parameters in the proposed model. Finally, a reciprocating seal degradation …

Improving Stem Recruitment Through A Theme-Based Summer Residential Camp Focused On Sea Level Rise, Vukica M. Jovanović, Balša Terzić, Mujde Erten-Unal, Victoria Hill, George Mcleod, Michelle Covi, David Burdige, Jenifer Alonzo, Justin Mason, Tysha Batts, Cynthia Tomovic

Engineering Technology Faculty Publications

In this paper, the authors present an enrichment program that focuses on Science, Technology, Engineering, and Math (STEM) concepts. The program is named Building Leaders to Advance Science and Technology (BLAST) and is held each summer at three universities across the Commonwealth of Virginia: Old Dominion University, the University of Virginia, and the Virginia Polytechnic Institute. BLAST is sponsored in partnership among these three universities and the Virginia Space Grant Consortium (VSGC), and is funded by the General Assembly of Commonwealth of Virginia. Its main purpose is to expose high school students to topics related to different STEM fields through …

Work Environment Factors Impacting The Report Of Secondary Trauma In U.S. Resident Assistants, Robert Jason Lynch

Educational Leadership & Workforce Development Faculty Publications

WORKING WITH TRAUMATIZED INDIVIDUALS can have potentially negative impacts on professional support personnel, including cognitive decline, increased anxiety, and declines in physical health. Despite the responsibilities of resident assistants as crisis-responders, few studies explore how they are impacted by secondary trauma. This study sought to understand how specific aspects of the RA work environment relate to their self-reported levels of secondary trauma. Using a sample of RAs (N = 208), the researcher conducted a quantitative secondary analysis of an existing dataset assessing symptoms of secondary traumatic stress in RAs. Findings indicated relationships between a variety of environmental factors and self-reported …

Liberal Education And The Capitalocene In American Higher Education, Laura Smithers

Educational Leadership & Workforce Development Faculty Publications

Data-driven control is remaking American higher education as the Capitalocene is remaking environment around us. In higher education, how might we orientate the queer potential of liberal education to produce the conditions of possibility of an Earth beyond the Capitalocene and data-driven control, an Earth that produces expansive notions of student success and racially just futures? I take up this inquiry in three sections. First, I establish relations between the orientation of the Capitalocene and the apparatus of data-driven control to develop a critical new materialisms analytic. I then diffract the practices of a student success initiative at a west …

Students With Learning Disabilities, Pair Programming And Situational Motivation, Shana L. Pribesh, Wu He, Silvana M. Watson, Debra A. Major, Li Xu, Ling Li, Xin Tian, Anjee Gorkhali, Yuming He

Educational Leadership & Workforce Development Faculty Publications

Persons with learning disabilities (LD) are underrepresented in computer science and information technology fields despite the explosion of related career opportunities and interest. In this study, we examine the use of pair programming as a collaborative intervention in with computer programming and compare students with learning disabilities to students who do not have learning disabilities. We concentrate on situational motivation constructs which tap into the desire to meet goals and acquire skills. We find that students with LD and similar students without LD fare the same. For the both groups, three of the four situational motivation subscales increase after the …

Community College Faculty's Attitudes And Self-Efficacy With Literacy Instruction In The Disciplines, Kristen H. Gregory, Linda Bol, Thomas Bean, Tony Perez

Educational Leadership & Workforce Development Faculty Publications

Many community college students are entering college-level courses underprepared for the literacy skills required to be successful. Faculty are considered experts in their disciplines, yet are often not trained in pedagogy and literacy instruction (Furco & Moely, 2012; Moje, 2008; Tsui, 2002). We developed a questionnaire to measure faculty's (n = 231) perceptions of their role, level of self-efficacy, and classroom practice in regard to discipline- specific literacy instruction. We analyzed data using exploratory factor analysis, t-tests, and analysis of variance. The findings show that faculty have marginally positive perceptions and self-efficacy regarding incorporating discipline-specific literacy instruction in their courses. …

From Nativism To White Power: Mid-Twentieth-Century White Supremacist Movements In Oregon, Shane Burley, Alexander Ross

Geography Faculty Publications and Presentations

Two document cases in the Oregon Historical Society (OHS) Research Library's George Rennar papers contain significant documentation of White supremacist organizations that developed in Oregon during the period between World War I and World War II. In this Research Files article, Shane Burley and Alexander Reid Ross highlight connections found within the collection between the variety of interlinked, racist, and nationalist organizations during that time period. Burley and Ross argue that while “membership numbers remained relatively small, these organizations provided a crucial link to the development of radical right-wing groups during the postwar era.”

Talking About Black Lives Matter And #Metoo, Linda S. Greene, Lolita Buckner Inniss, Bridget J. Crawford, Mehrsa Baradaran, Noa Ben-Asher, I. Bennett Capers, Osamudia R. James, Keisha Lindsay

Publications

This essay explores the apparent differences and similarities between the Black Lives Matter and the #MeToo movements. In April 2019, the Wisconsin Journal of Gender, Law and Society hosted a symposium entitled “Race-Ing Justice, En-Gendering Power: Black Lives Matter and the Role of Intersectional Legal Analysis in the Twenty-First Century.” That program facilitated examination of the historical antecedents, cultural contexts, methods, and goals of these linked equality movements. Conversations continued among the symposium participants long after the end of the official program. In this essay, the symposium’s speakers memorialize their robust conversations and also dive more deeply into the phenomena, …

Global Capital Flows, Time Varying Fundamentals And Transitional Exchange Rate Dynamics: An Ms-Var Approach, Süleyman Hilmi Kal, Ilhami Gunduz

Publications and Research

This paper studies whether dynamic relationship between exchange rate and economic and financial fundamentals vary depending on exchange rate is overvalued and undervalued with respect to its fundamental value. To achieve this, we implement two-state Markov Switching Vector Auto Regression (MSVAR) model with time varying transition probabilities to investigate whether the relationship among exchange rate, interest rate and inflation dynamics depend on overvaluation and undervaluation of exchange rates for the pre-crises period between years 1972-2009. We govern the transition between the undervalued and overvalued states by using Sharpe Ratios of debt and equity investments of the currency to assess whether …

Listener Perception As A Measure Of Treatment Effectiveness In Voice Modification For A Transwoman, April M. Gutierrez

Open Access Theses & Dissertations

Purpose: The purpose of this study was to assess treatment effectiveness using listener perception as a measure of vocal femininity in a 22-year old transwoman.

Participant: The participant for this study was a monolingual, English-speaking, 22-year old transwoman. Inclusion criteria included self-identification as a transwoman. Exclusion criteria included surgical procedures to the vocal folds.

Methods: This cross-sectional survey study focused on using listener perception as a measure of treatment effectiveness in voice feminization. This study used surveys to investigate how naïve listeners would perceive the participants voice after she received voice modification treatment at the University of Texas at El …

Novel Maximum Entrophy Method For The Average Survival Time Differences Between Two Groups, Joscelyne Guzman - Gonzalez

Open Access Theses & Dissertations

We suggest a Maximum Likelihood estimator for the Average Survival Time Difference between two groups, based on the extra time in which should be added to one group to produce the maximum entropy of the result. The estimator is calculated only from time to event data, does not assume hazard proportionality and provides directly the magnitude of the clinical differences between the groups. Our Monte Carlo simulations show that, even at low sample numbers the estimator is a reliable predictor for the clinical differences between the groups, and therefore can be used to estimate from preliminary data whether or not …

Interactions Of Bacterial Communities With Hydrous Sulfate Minerals In Water-Restricted Gypsic Environments: A Case Study Based In The White Sands National Monument, Brandon Nicholas Lajoie

Open Access Theses & Dissertations

Microbial communities have been commonly found to survive and thrive in arid to hyper-arid gypsic environments that are considered hostile to most other forms of life. The mechanisms through which microbes have conquered these harsh environments remain poorly understood. Here I hypothesize that the microbial communities in water-restricted gypsic settings could benefit in terms of energy and water sources via their interactions with the abundant hydrous sulfate minerals [i.e., gypsum (CaSO4·2H2O)] that build up these niches. Gypsum is of high bio-relevance because its sulfate component may be used as electron acceptor by sulfate-reducing bacteria and the crystallization water may be …

Predicting Recessions In Major Texas Metropolitan Economies Using Yield Spreads And Other Economic Indicators, Aaron Dodson Nazarian

Open Access Theses & Dissertations

The yield spread has been found to serve as a valuable economic forecasting tool. This research employs dynamic autoregressive probit downturn models using the United States yield spread and other regional and macroeconomic variables. This study then inspects the predictive power of the United States yield spread on the five largest urban economies in Texas, the four largest metropolitan areas along the Texas-Mexico border, as well as the Texas state economy. The other regional and macroeconomic variables are included in model specifications based on characteristics of the economies being analyzed. Results indicate that a narrowing of the United States Yield …

On The Performance Of Variable Selection And Classification Via Rank-Based Classifier, Md Showaib Rahman None Sarker

Open Access Theses & Dissertations

In high-dimensional gene expression data analysis, the accuracy and reliability of cancer classification and selection of important genes play a very crucial role. To identify these important genes and predict future outcomes (tumor vs. non-tumor), various methods have been proposed in the literature. But only few of them take into account correlation patterns and grouping effects among the genes. In this article, we propose a rank-based modification of the popular penalized logistic regression procedure based on a combination of l1 and l2 penalties capable of handling possible correlation among genes in different groups. While the l1 penalty maintains sparsity, the …

Recent Changes In The Zooplankton Communities Of Arctic Tundra Ponds In Response To Warmer Temperatures And Nutrient Enrichment, Mariana Vargas Medrano

Open Access Theses & Dissertations

Warming is altering Arctic freshwater ecosystems, enriching the water column, increasing primary productivity and shifting the composition, dominance and the timing of emergence and reproduction of zooplankton communities. Historic data from arctic tundra ponds near UtqiaÄ¡vik, AK have given us valuable insight into changes that have occurred in recent times. A change of dominance from cyclopoid copepods to Daphnia middendorffiana has occurred over a 40 year period. Daphnia are more common, abundant and larger, which may be explained by increased primary productivity stimulated by nutrient release from permafrost thaw. Copepods and fairy shrimp emerged earlier from the overwintering states, which …

Conductivity Modulation In Strained 2d Transition- Metal- Dichalcogenides Via Micro- Electro- Mechanical Actuation, Aldo Ivan Vidaña

Open Access Theses & Dissertations

In this thesis, strain-induced conductivity modulation in bi-layer molybdenum disulfide (MoS2) flakes is experimentally investigated and modeled. Uniaxial tensile strain in the MoS2 flakes is achieved using a micro-electro-mechanical (MEM) actuator. Conductivity ratios up to 400 are demonstrated. Theoretical predictions of conductivity versus applied voltage in the MEMS-MoS2 device match experimental data reasonably well using only the effective width of the TMDC flakes as the sole fitting parameter. The amount of strain induced in the MoS2 flakes was determined to be as high as 2.7% for one flake using the model fitted to the experiment data. The switching energy required …

Forum Magazine, Spring 2019

Forum Magazine

No abstract provided.

Forum Magazine, Summer 2019

Forum Magazine

No abstract provided.

Type Of Tooth Movement During En Masse Retraction Of The Maxillary Anterior Teeth Using Labial Versus Lingual Biocreative Therapy In Adults: A Randomized Clinical Trial, Islam Tarek, Mayse Sadek, Noha Sabet

Dentistry

No abstract provided.

A Comparison Of The Rey Complex Figure And The Wechsler Scales, Amanda M. Brantley

Murray State Theses and Dissertations

This study was conducted to determine the correlation among the Wechsler Intelligence Scales and the Rey Complex Figure Test, a measure of visual memory, in a clinical sample. The purpose was to determine the point at which a difference between cognitive ability scores (at the overall ability level or at the index level) and visual memory scores would be statistically meaningful. Participants in this study were selected from clinical client folders with completed variables of interest. The mean age of the 64 participants was 21 years (SD = 12.6). Statistically significant correlations were found among three of the four …

American Bolsheviki: The First Red Scare In The United States, 1917 To 1920, Jonathan Dunning

Murray State Theses and Dissertations

This thesis looks to reframe the timeline of the First Red Scare in United States History. Historians of this period have consistently viewed the First Red Scare as occurring from 1919 to 1920. However, by viewing the First Red Scare as beginning in 1919, historians missed the fear of communism that developed in the US government and the American press and society throughout 1917 and 1918, starting immediately after the Bolshevik Revolution. Moreover, in the past, historians have done little to detail the connections between the Allied Intervention in Russia from 1918 to 1920 and the First Red Scare, despite …

Labeling Sexual Assault Perceptions Associated With Ptsd Symptom Severity, Shania Cole

Murray State Theses and Dissertations

Many agree that sexual assault is a common problem among females, but there is less agreement regarding how to label individuals who experience sexual assault. Most research has examined the connotations associated with the labels, most of which has associated “victim” with negative connotations and “survivor” with positive adjectives. Few studies empirically examine how individuals of sexual assault respond to these labels and how the labels relate to outcomes in these individuals’ lives. Unfortunately, individuals who have experienced an unwanted sexual encounter are at higher risk for developing posttraumatic stress disorder (PTSD). Understanding how these individuals label themselves, and how …

Teaching Music Literacy In Beginning Band: A Review Of Method Books And A Proposed Alternative Method, Haley Caroline Harrington

Murray State Theses and Dissertations

The purpose of this study is to review current band methodologies, specifically for the beginning band, and identify the current process of teaching music literacy. For beginning bands, music literacy instruction is a powerful tool music students use to be successful at sight-reading. It cannot be assumed that simply because students perform music on instruments, they also will achieve high ratings at sight-reading. Brain-compatible learning may offer a solution in addressing the issue with how beginning band students are taught to read music. Therefore, this study will propose a more effective method, applying the Music Learning Theory of Edwin Gordon …

Barriers To Change For Augmentative And Alternative Communication, Lauren E. Brown

Murray State Theses and Dissertations

The purpose of this study was to identify the effects of counseling training on speech language pathologists’ (SLPs) perceived competency to address Attitude Barriers within the augmentative and alternative communication (AAC) assessment process as presented by Beukelman and Mirenda (2005). Counseling techniques, such as the use of the Readiness to Change© tool, are within the scope of practice for SLPs. Unfortunately, there is a lack of research on how to apply these tools and techniques with individuals who use AAC .

A training seminar was conducted to educate participants in the use of the Readiness to Change© tool. Data was …

A People So Different From Themselves: British Attitudes Towards India And The Power Dynamics Of The East India Company, Eric Gray

Murray State Theses and Dissertations

Gray, Eric, A People So Different from Themselves: British Attitudes Towards India and the Power Dynamics of the East India Company. Master of Arts (History), April, 2019, Murray State University, Murray, Kentucky.

Today, many characteristics of the nineteenth- and twentieth-century British Raj are well ingrained in the public consciousness, particularly Victorian Era Britons’ general disdain for numerous aspects of the many cultures found on the Indian Subcontinent. Moreover, while many characteristics of the preceding East India Company’s rule in India were no less exploitative of Indian peoples, evidence shows a much different relationship between British and Indian cultures during the …

Numerical Simulations For Optimal Control Of A Cancer Cell Model With Delay, Jessica S. Lugo

Murray State Theses and Dissertations

Mathematical models are often created to analyze the complicated behavior of many physical systems. One such system is that of the interaction between cancer cells, the immune system, and various treatments such as chemotherapy, radiation, and immunotherapy. Using models that depict these relationships gives researchers insight on the dynamics of this complicated system and possibly ideas for improved treatment schedules.

The model presented here gives the relationship of cancer cells in development phases with immune cells and cycle-specific chemotherapy treatment. This model includes a constant delay term in the mitotic phase. Optimal control theory is used to minimize the cost …

Masculine And Feminine Personality Profiles And Their Relationship With Athletic Identity, Scott York

Murray State Theses and Dissertations

Athletes represent a unique population of people with unique personality traits. It has been well documented the trait differences between males and females and how these manifest. There has been substantial work done on the personality of athletes and the sex differences that exist therein. This study aims to examine the athletic identity of college students and their personality traits to determine if the sex differences classically defined as masculine and feminine by the five-factor model (FFM) manifest in people who simply identify as athletes.