Digital Commons Network^™

Residential Electricity Consumption In Las Cruces, Felipe Francisco Mejia

Open Access Theses & Dissertations

This study examines how residential electricity consumption (KWHC) reacts to changes in the price of electricity, the price of natural gas, real income per capita, heating degree days, and cooling degree days. Annual frequency data analyzed are for Las Cruces, the second largest metropolitan economy in New Mexico. The sample period is 1977 to 2016. An Autoregressive-Distributed Lag model (ARDL) is employed to obtain long-run and short-run elasticities. In the long-run, residential consumption responds in a statistically reliable manner only to real per capita income. In the short-run, residential consumption responds reliably to all of the variables except heating degree …

Indigenous Masculinities And The Tarascan Borderlands In Sixteenth-Century Michoacán, Daniel Santana

Open Access Theses & Dissertations

This Dissertation studies the hypermasculine narratives related to the expansion of the Tarascan state and its borderlands in early colonial Michoacán. Colonial texts such as the Relación de Michoacán and the relaciones geográficas depict the ascendance of the powerful Uacúsecha dynasty whose solar deity and male rulers oversaw the conquest of the Lake Pátzcuaro Basin and succeeded in holding back the Mexica (Aztecs) from penetrating their territories. The Dissertation pays particular attention to how contemporary political events, namely the Spanish conquest of Michoacán, endemic warfare in center-west Mexico, and political rivalries amongst Indigenous elites, influenced these accounts. Consequently, these narratives …

Numerical Investigation Of Molten Metal Infiltration And Pillared Cooling Systems At Microscale, Shaikh Tanveer Tanveer Hossain

Open Access Theses & Dissertations

Flow-through porous media at pore-scales is one of the less explored sides of fluid mechanics due to the complexity associated with highly irregular pore geometry. Most of the established methods that try to quantify such flow are based on statistical observations of flow through numerous porous specimens. Such understandings may satisfy the need for applications where micro-level details are not a concern. Some numerical approaches did try to analyze the micro-level flow, but the analysis was confined to small sample sizes due to the intensive computation challenge. There are several applications of porous media flow where analyzing the large-scale flow …

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 …

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 …

Virtual Source Method Simulation Of Progressive Water Waves, O Al-Tameemi, Di Graham, K Langfeld

School of Engineering, Computing and Mathematics

The virtual source method (VSM) has been developed to simulate water waves based upon the solution of Laplace’s equation for the velocity potential integral equations with full nonlinear surface conditions. The basis of the method is the use of specific Green’s functions for a rectangular ‘virtual domain’ which is an extension of the physical domain. The solution variables are frequency components of the velocity potential at the upper virtual boundary and these are found by specifying appropriate conditions on the physical boundaries (i.e. wavemaker, walls and wave surfaces). The authors have shown that the model successfully simulates both linear and …

Home Childbirth Among Young Mothers Aged 15-24 Years In Nigeria: A National Population-Based Cross-Sectional Study, Emmanuel O. Adewuyi, Vishnu Khanal, Yun Zhao, Lungcit David, Olasunkanmi D. Bamidele, Asa Auta

Research outputs 2014 to 2021

Objective To estimate the prevalence and identify factors associated with home childbirth (delivery) among young mothers aged 15–24 years in Nigeria. Design A secondary analysis of cross-sectional data from the 2013 Nigeria Demographic and Health Survey (NDHS). Setting Nigeria. Participants A total of 7543 young mothers aged 15–24 years. Outcome measure Place of delivery. Results The prevalence of home delivery among young mothers aged 15–24 years was 69.5% (95% CI 67.1% to 71.8%) in Nigeria—78.9% (95%CI 76.3% to 81.2%) in rural and 43.9% (95%CI 38.5% to 49.5%, p < 0.001) in urban Nigeria. Using the Andersen’s behavioural model, increased odds of home delivery were associated with the two environmental factors: rural residence (adjusted OR, AOR: 1.39, 95% CI 1.06 to 1.85) and regions of residence (North-East: AOR: 1.97, 95% CI 1.14 to 3.34; North-West: AOR: 2.94, 95% CI 1.80 to 4.83; and South-South: AOR: 3.81, 95% CI 2.38 to 6.06). Three of the enabling factors (lack of health insurance: AOR: 2.34, 95% CI 1.16 to 4.71; difficulty with distance to healthcare facilities: AOR: 1.48, 95% CI 1.15 to 1.88; and < 4 times antenatal attendance: AOR: 3.80, 95% CI 3.00 to 4.85) similarly increased the odds of home delivery. Lastly, six predisposing factors—lack of maternal and husband’s education, poor wealth index, Islamic religion, high parity and low frequency of listening to radio—were associated with increased odds of home delivery. Conclusions Young mothers aged 15–24 years had a higher prevalence of home delivery than the national average for all women of reproductive age in Nigeria. Priority attention is required for young mothers in poor households, rural areas, North-East, North-West and South-South regions. Faith-based interventions, a youth-oriented antenatal care package, education of girls and access to health insurance coverage are recommended to speed up the reduction of home delivery among young mothers in Nigeria.

Population Data Centre Profile - The Western Australian Data Linkage Branch, Steve Hodges, Tom Eitelhuber, Alexandra Merchant, Janine Alan

Research outputs 2014 to 2021

Established in 1995, the Western Australian Data Linkage Branch (DLB) is Australia’s longest running data linkage agency. The Western Australian Data Linkage System (WADLS) employs an enduring linkage model spanning over 60 data collections supported by internally developed and supported software and IT infrastructure. DLB has delivered, and continues to deliver, a range of significant data linkage innovations, many of which have been adopted elsewhere. A current restructure within the Western Australian Department of Health (which we will refer to as the Department of Health) will provide an improved funding model geared toward addressing issues with staff retention, capacity and …

Proof-Of-Familiarity: A Privacy-Preserved Blockchain Scheme For Collaborative Medical Decision-Making, Jinhong Yang, Md Mehedi Hassan Hasan Onik, Nam-Yong Lee, Mohiuddin Ahmed, Chul-Soo Kim

Research outputs 2014 to 2021

The current healthcare sector is facing difficulty in satisfying the growing issues, expenses, and heavy regulation of quality treatment. Surely, electronic medical records (EMRs) and protected health information (PHI) are highly sensitive, personally identifiable information (PII). However, the sharing of EMRs, enhances overall treatment quality. A distributed ledger (blockchain) technology, embedded with privacy and security by architecture, provides a transparent application developing platform. Privacy, security, and lack of confidence among stakeholders are the main downsides of extensive medical collaboration. This study, therefore, utilizes the transparency, security, and efficiency of blockchain technology to establish a collaborative medical decision-making scheme. This study …

Monte-Carlo Simulation Study Of Two-Stage Quantile Regression For Dynamic Panel Data, Hossameldin Ahmed, Alaa Ahmed Prof, Aya Afify Ms

Economics

No abstract provided.

Rapid Identification Of Phospholipase A2 Transcripts From Snake Venoms, Ying Jia, Pablo Olvera, Frida Rangel, Bianca Mendez, Samir Reddy

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

Phospholipase A₂ (PLA₂) is a major component in snake venoms and it is found in many different isoforms. To identify transcripts encoding different PLA₂ isoforms, we developed a simple, rapid procedure. Total RNA was extracted from the venoms of three cottonmouth snakes and two diamondback rattlesnakes, and further reverse-transcribed into complementary DNA (cDNA). Using one pair of cottonmouth PLA₂-specific primers and Reverse Transcription Polymerase Chain Reaction (RT-PCR) technique, we identified 27 unique full-length PLA₂ transcripts, including nine sequences identical to the previously documented ones in the database and one novel GIII-like PLA_{2 …}

A New Species Of Stygobitic Snail In The Genus Antrorbis Hershler & Thompson, 1990 (Gastropoda, Cochliopidae) From The Appalachian Valley And Ridge Of Eastern Tennessee, Usa, Nichlas S. Gladstone, Kathryn E. Perez, Evelyn B. Pieper, Evin T. Carter, K. L. Dooley, Nathaniel F. Shoobs, Annette S. Engel, Matthew L. Niemiller

School of Integrative Biological & Chemical Sciences (Formerly Dept. of Biology)

A new species of cave snail (Littorinimorpha: Cochliopidae) in the genus Antrorbis is described from the dark zone of two caves in the Appalachian Valley and Ridge province in eastern Tennessee, United States. The Tennessee Cavesnail, Antrorbis tennesseensis Perez, Shoobs, Gladstone, & Niemiller, sp. nov. is distinguished from its only known congener, Antrorbis breweri, by the absence of raised tubercles on its finely spirally striate protoconch, and its unique radular formula. Moreover, A. tennesseensis is genetically distinct from A. breweri based on substantial divergence at the mitochondrial CO1 locus. This is the first cavesnail to be described from the Appalachian …

A Sustainable Prototype For Renewable Energy: Optimized Prime-Power Generator Solar Array Replacement, Nathan Thomsen, Torrey J. Wagner, Andrew J. Hoisington, Steven J. Schuldt

Faculty Publications

Remote locations such as disaster relief camps, isolated arctic communities, and military forward operating bases are disconnected from traditional power grids forcing them to rely on diesel generators with a total installed capacity of 10,000 MW worldwide. The generators require a constant resupply of fuel, resulting in increased operating costs, negative environmental impacts, and challenging fuel logistics. To enhance remote site sustainability, planners can develop stand-alone photovoltaic-battery systems to replace existing prime power generators. This paper presents the development of a novel cost-performance model capable of optimizing solar array and Li-ion battery storage size by generating tradeoffs between minimizing initial …

Tuning The Reactivity Of Nanoenergetic Gas Generators Based On Bismuth And Iodine Oxidizers, Mkhitar A. Hobosyan, Karen S. Martirosyan

Physics & Astronomy Faculty Publications

There is a growing interest on novel energetic materials called Nanoenergetic Gas- Generators (NGGs) which are potential alternatives to traditional energetic materials including pyrotechnics, propellants, primers and solid rocket fuels. NGGs are formulations that utilize metal powders as a fuel and oxides or hydroxides as oxidizers that can rapidly release large amount of heat and gaseous products to generate shock waves. The heat and pressure discharge, impact sensitivity, long term stability and other critical properties depend on the particle size and shape, as well as assembling procedure and intermixing degree between the components. The extremely high energy density and the …

The Near-Peer Mathematical Mentoring Cycle: Studying The Impact Of Outreach On High School Students’ Attitudes Toward Mathematics, Aaron T. Wilson, Sergey Grigorian

School of Mathematical & Statistical Sciences Faculty Publications

College students may be seen as near-peers to high school students and high school students are often able to see themselves in the college students who are but one step ahead. This nearness in maturity and educational level may place college students in a particularly powerful position when it comes to reaching out to high school students to promote higher education in math and science. In this study college students gave dynamic mathematics outreach presentations, MathShows, to minority and low-income high school students in a mid-sized public school district on the U.S. border with Mexico. The study investigated the impacts …