Digital Commons Network^™

Theoretical Studies Of Molecule-Surface Interactions And Dynamics, Yingqi Wang

Chemistry and Chemical Biology ETDs

Gas-surface scattering involves the conversion of energy in different forms in the impinging molecule, possible bond breaking and forming, and the energy transfer across gas-solid interface. Possible energy dissipation channels include adiabatic energy transfer to the motion of surface phonons and non-adiabatic interactions with surface electron-hole pairs. A complete understanding of the interplay of energy dissipation and physical/chemical changes in the molecule is vital for many important applications such as materials fabrication and heterogenous catalysis.

Gas-surface encounters may occur where non-adiabatic effects are negligible. Two such systems were investigated, both with ample experimental data. One is concerned with the scattering …

Combining Isotopic And Genetic Analyses To Quantify Microbial Facilitation Of Recalcitrant Resource Use By Terrestrial And Aquatic Consumers, Alexi Christina Besser

Biology ETDs

Quantifying the flow of energy and nutrients through food webs is foundational to understanding the structure and function of ecosystems. Here, I utilize the stable carbon and nitrogen isotope analysis of individual amino acids to trace the movement of essential amino acids through terrestrial and freshwater food webs in New Mexico, USA. I first explore isotopic patterns among co-occurring terrestrial plants and aquatic algae. I then combine this molecular isotopic approach with 16S and 18S rRNA sequencing to demonstrate the importance of gut microbiota as sources of essential amino acids to wild mammalian hosts. Next, I explore the roles of …

Investigation Of Laser And Nonlinear Properties Of Anderson Localizing Optical Fibers, Cody Ryan Bassett

Optical Science and Engineering ETDs

In this dissertation, I investigate the possibility of lasing and nonlinear phenomena in completely solid-state transverse Anderson localizing optical fibers (TALOFs). I examine three areas within this range of topics. The research in nonlinear phenomena focuses on four-wave mixing (FWM). FWM is of high interest in TALOFs due to the fact that guided localized modes of the fiber each have different propagation constants, and thus unique possible FWM pairs can be generated from the same input pump beam. I demonstrate the generation of FWM in the TALOF by pumping it with 532 nm light into a localized mode and observing …

Statistical Methods For Differential Gene Expression Analysis Under The Case-Cohort Design, Lidong Wang

Mathematics & Statistics ETDs

Differential gene expression analysis has the potential to discover candidate biomarkers, therapeutic targets, and gene signatures. How to save money when using an unaffordable sample is a practical question. The case-cohort (CCH) study design can blend the economy of case-control studies with the advantages of cohort studies. But it has not been seen in the medical research literature where high-throughput genomic data were involved.

A score test does not need to fit the Cox PH model iteratively; hence, it can save computing time and avoid potential convergence issues. We developed a score test under the CCH design to identify DEGs …

Induced Seismicity In The Raton Basin And Global Variability Of The 410-Km Discontinuity, Margaret E. Glasgow

Earth and Planetary Sciences ETDs

Natural processes like mantle convection and plate tectonics dominate Earth’s seismic structure. Recently human activities have increasingly influenced the deformation of the shallow crust. In this dissertation, passive source seismology was used to constrain seismic discontinuities in the mantle transition zone and seismogenic structures in induced earthquake settings. Using a novel sampling method and uniform processing approach, I found the 410-km discontinuity is thermally and compositionally variable. Using a machine- learning approach, I found the three main zones of seismicity in the Raton Basin consist of short faults or fault segments with variable orientations. The zone that hosted a Mw …

Dense Array Seismic Imaging Of Earth's Crust Using Active And Passive Sources, Evans Awere Onyango

Earth and Planetary Sciences ETDs

Imaging Earth’s crust is critical to understanding processes in the near-surface that affect civilization such as the interaction of seismic waves with the near-surface to generate natural or man-made hazards or investigating how the shallow crust affects the distribution of resources. In chapter 1, I processed and analyzed active source seismic data recorded by ~1000 geophones that were acquired over the legacy HADDOCK nuclear test at the Nevada National Security Site. Using seismic reflection and refraction methods, we image the partially collapsed post-detonation structure to better understand the velocity structure in and around the HADDOCK chimney. Results from this work …

Evolution Of Shock-Driven Multi-Phase Instability, Joshua Chavez

Mechanical Engineering ETDs

ABSTRACT

In many models and experiments using shock tubes and shock tube instabilities, measurements of velocity and position of the flow features are frequently taken in a single horizontal direction (or in one plane), however, the three-dimensional flow structure is important and cannot be fully resolved by such measurements. By placing a mirror at 45 degrees atop a test section of a shock tube, it becomes possible to visualize the flow from two directions simultaneously. The mirror is used to see if viable data can be gathered from the second view in conjunction with the main view. With high-speed video …

Material Characterization And Comparison Of Sol-Gel Deposited And Rf Magnetron Deposited Lead Zirconate Titanate Thin Films, Katherine Lynne Miles

Mechanical Engineering ETDs

Lead zirconate titanate (PZT) has been a material of interest for sensor, actuator, and transducer applications in microelectromechanical systems (MEMS). This is due to their favorable piezoelectric, pyroelectric and ferroelectric properties. While various methods are available to deposit PZT thin films, radio frequency (RF) magnetron sputtering was selected to provide high quality PZT films with the added capability of batch processing. These sputter deposited PZT films were characterized to determine their internal film stress, Young’s modulus, composition, and structure. After characterization, the sputtered PZT samples were poled using corona poling and direct poling methods. As a means of comparison, commercially …

Unraveling The Complex Interactions Between Members Of The Schistosoma Haematobium Group And Bulinus Snails In And Around Lake Victoria In West Kenya, Caitlin Raiselle Babbitt

Biology ETDs

Schistosoma haematobium, the agent of urogenital schistosomiasis, and related schistosomes are transmitted by members of the genus Bulinus. Each of the 38 Bulinus species vary in their ability to vector schistosome species and non-schistosome trematodes resulting in a patchwork of snail-parasite compatibilities. Accurately identifying snail intermediate hosts and the disease-causing parasites they transmit is critical for snail control strategies and the management of human schistosomiasis. Towards these ends, this thesis identifies bulinid species and the parasites they transmit and implicates certain species in the transmission of S. haematobium. The thesis also includes a systematic review of methods …

Functional Data Analysis Of Covid-19, Nichole L. Fluke

Mathematics & Statistics ETDs

This thesis deals with Functional Data Analysis (FDA) on COVID data. The Data involves counts for new COVID cases, hospitalized COVID patients, and new COVID deaths. The data used is for all the states and regions in the United States. The data starts in March 1^st, 2020 and goes through March 31^st, 2021. The FDA smooths the data and looks to see if there are similarities or differences between the states and regions in the data. The data also shows which states and regions stand out from the others and which ones are similar. Also shown …

Accuracy Of Forensic Pathologists In Incorporating Post-Mortem Ct (Pmct) In Forensic Death Investigation, Yohsuke Makino, Kana Unuma, Kurt B. Nolte, Natalie L. Adolphi

Pathology Research and Scholarship

Post-mortem computed tomography (PMCT) is now performed routinely in some medical examiner's offices, and the images are typically interpreted by forensic pathologists. In this study, the question of whether pathologists appropriately identify significant PMCT findings and incorporate them into the death investigation report and the cause and manner of death (COD and MOD) statements was addressed. We retrospectively reviewed 200 cases where PMCT was performed. The cases were divided into four categories: (1) full autopsy without radiology consultation (n = 77), (2) external exam without radiology consultation (n = 79), (3) full autopsy with radiology consultation (n = 26), (4) …

Simulation Of Supercritical Multiphase Flows Using Machine Learning, Nelson P. Longmire

Mechanical Engineering ETDs

In many technologies, such as rocket engines and modern power plants, the pressures of the fluids in these systems have increased to increase efficiency. As a result, the fluids are under pressures higher than the critical pressure meaning the fluids are supercritical. Supercritical fluids are unique as a liquid/gas phase equilibrium no longer exists, and a process called pseudo boiling occurs where the fluid properties have steep gradients, which lead to interesting fluid mechanics and heat transfer characteristics. Our understanding of supercritical fluids has had exciting advances over the years. However, there are still phenomena that are still not well …

The Role Of Self-Efficacy And Emotional Exhaustion In Teacher Considerations Of Job-Related Stressors And Attrition: A Mixed-Methods Study, Raymond Nance

Teacher Education, Educational Leadership & Policy ETDs

Teacher attrition is a problem currently afflicting classrooms around the world. Emotional exhaustion and teacher self-efficacy have been demonstrated to be factors in attrition. This study assesses the efficacy of potential tools for use in evaluating emotional exhaustion and self-efficacy before problems arise and to guide professional development in efficacious directions.

This parallel-convergent mixed-methods study performed quantitative regression analyses on the joined effects of emotional exhaustion and self-efficacy to assess their potential mediating role between teachers’ job stressors and considerations of leaving the job. The existence of mediation was demonstrated. Qualitative thematic analysis of transcripts from six interviews with current …

A Rapid High-Precision Analytical Method For Triple Oxygen Isotope Analysis Of Co2 Gas Using Tunable Infrared Laser Direct Absorption Spectroscopy, Nathan Perdue, Zachary Sharp, David Nelson Jr., Rick Wehr, Christoph Dyroff

Earth and Planetary Sciences ETDs

Rationale

The simultaneous analysis of the three stable isotopes of oxygen – triple oxygen isotope analysis – has become an important analytical technique in natural sciences. Determination of the abundance of the rare ¹⁷O isotope in CO₂ gas using magnetic sector isotope ratio mass spectrometry is complicated by the isobaric interference of ¹⁷O by ­¹³C (¹³C¹⁶O¹⁶O and ¹²C¹⁶O¹⁷O both have mass 45 amu). A number of analytical techniques have been used to measure the ¹⁷O/¹⁶O ratio of CO₂ gas. They …

Plant Responses To Drought In A Semiarid Grassland: An Isotopic Approach, Elizabeth V. Fain

Biology ETDs

Dryland ecosystems are facing unprecedented climate extremes as a result of global climate change. Water is the most limiting factor in dryland ecosystems, therefore plants in drylands have developed crucial water-use strategies for drought survival. It is important to understand plant physiological responses to water stress as drylands are projected to experience more frequent, severe droughts in the coming decades. To test how plants respond to drought in a semiarid grassland, we measured δ13C, δ15N, and C/N ratio of common C3 and C4 plants (Bouteloua gracilis, B. eriopoda, Pleuraphis jamesii, Salsola tragus, Machaeranthera pinnatifida, …

No Budget, No Problem! A Comparison Of Screen Recording Software, Robyn Gleasner, Moses L. Moya

Posters and Presentations

This poster will share the freely available screen recording software/programs that the Resources Archives and Discovery Unit at UNM HSLIC tested and then compared or used with proprietary software to create short instructional videos. These videos were used to promote use of a new suite of products through LibKey to help users find and access the full text of articles more easily. Members of RAD wanted to make information more readily available to users, but also wanted to be fiscally responsible and not subscribe to a software that would not be used outside of this project. The resources listed on …

Understanding The Interconnection Between Public Health And Political Behaviors In A Politically Polarized Context: The Impact Of Race, Political Attitudes, And Policy Factors On The Us Covid-19 Pandemic Response., Florent Nkouaga

Political Science ETDs

This dissertation evaluates the interconnection between health and political behaviors in a polarized context such as the United States. The COVID-19 pandemic unveiled the current political polarization and the structural health disparities among racial communities. Using the system theory delineated by David Easton, this dissertation demonstrates that health attitudes and behaviors in the electorate can influence voting behaviors, as was the case with the 2020 US presidential election. An evaluation of the 2021 African American COVID-19 Vaccine Polls (AACVP), and the 2020 Collaborative Multiracial Postelection Survey (CMPS) demonstrates that factors such as public health compliance, trust in federal health institutions, …

Church, Law, And Literature: The Interconnected Social Structures Of Domestic Violence In The Medieval And Early Modern Periods, Sarah E. Fairbanks-Ukropen

History ETDs

Domestic violence in the medieval and early modern periods can be difficult to examine. The people who lived during these periods did not view familial abuse in the ways that we do today; however, this dissertation seeks to explore the topic of domestic violence by examining the religious, legal and cultural backdrop that enabled, and even encouraged abusive marriages and violence within families. Starting with the Patristic fathers, this dissertation traces the attitudes towards sexuality, violence and the sanctity of marriage in the Church and how it responded to accusations of abuse. Similarly, English law from the pre-Conquest up until …

Determining The Idealizers Of Principal Monomial Ideals Over A Rational Normal Curve, Perla A. Maldonado Cortez

Mathematics & Statistics ETDs

Given an ideal J generated by an element of the form sm1 tm2 , where
m1 ≥ 2 and m2 ≥ 0, we illustrate how to compute the idealizer I(J) over the ring
of the rational normal curve of degree n and we give a formula for it using the
graded pieces of the sets of differential operators.

How Hearing Parents With Deaf Or Hard Of Hearing Children Construct Deafness Through Their Early Intervention Experience, Bettie T. Petersen

Language, Literacy, and Sociocultural Studies ETDs

This dissertation explores how hearing parents with deaf/hard of hearing children come to understand deafness. This mixed methods study used an online survey and multiple case studies (volunteers from survey). Participants were asked about early intervention experiences and beliefs about deafness. The survey had 74 respondents and five families participated in the interviews. Survey participants’ beliefs about deafness were primarily medical, focusing on the perceived barriers caused by deafness and the remediation of those barriers through spoken language options. A small number of respondents adopted a cultural perspective of deafness and focused on remediation of barriers through involvement in the …

20221007_October Is Patient Centered Care Awareness Month, Kelleen Maluski

HSLIC Blog Post

No abstract provided.

Wagon Tracks Volume 36, Issue 6 (August 2022)

Wagon Tracks

Contents

2 On the Cover: Guardian of the Trail by Bill Meek and Denneen Peterson

4 Insights from your President

5 Joanne’s Jottings

6-7 2022 Rendezvous, 2023 Symposium

8-10 Trail News

11 Fire!

13-17 Mrs. S. B. Davis: Proprietress of the Exchange Hotel in Santa Fe and the Plaza Hotel in Las Vegas by Doyle Daves

18-24 Odometers: Distance Measurement on Western Emigrant Trails by Norman E. Wright

25-27 Using Wagon Odometer Data in Trail Research by Gerald T. Ahnert

28 Chapter Reports

29 Membership Form

32 Calendar

Above- And Belowground Responses To Environmental Change In The Northern Chihuahuan Desert, Renée Françoise Brown

Biology ETDs

Drylands cover 45% of the terrestrial surface and are expanding rapidly due to anthropogenic drivers. Altered precipitation regimes, atmospheric nitrogen deposition, and wildfire will likely have significant consequences in these regions where ecological processes are limited by water and nitrogen. In this dissertation, I explored temporal dynamics of net primary production (NPP) and related above- and belowground processes under several environmental change drivers in the Sevilleta National Wildlife Refuge, central New Mexico, USA. Located in the northern Chihuahuan Desert, this region experiences strong seasonal precipitation patterns driven by the North American Monsoon, historically characterized by frequent small rain events hypothesized …

Improved Definition Of Nonstandard Neutrosophic Logic And Introduction To Neutrosophic Hyperreals (Fifth Version, Florentin Smarandache

Neutrosophic Sets and Systems

No abstract provided.

Weighted Aggregation Operators Of Single-Valued Neutrosophic Linguistic Neutrosophic Sets And Their Decision-Making Method, Wen-Hua Cui, Jun Ye, Jing-Jing Xue, Ke-Li Hu

Neutrosophic Sets and Systems

No abstract provided.

Location Selection Of Low-Carbon Logistics Park Based On The Neutrosophic Numbers Multiple Attribute Decision Making, Xinrui Xu, Dexue Deng, Cun Wei

Neutrosophic Sets and Systems

No abstract provided.

Construction Of New Similarity Measures And Entropy For Interval-Valued Neutrosophic Sets With Applications, Zarife Zararsiz

Neutrosophic Sets and Systems

No abstract provided.

Classifiation Of Ordered Semigroups Through Neutrosophic Generalized Bi-Ideals With Applications, Faiz Muhammad Khan, Madad Khan, . Ihsanullah

Neutrosophic Sets and Systems

No abstract provided.

Neutro-Sigma Algebras And Anti-Sigma Algebras, Memet Şahin

Neutrosophic Sets and Systems

No abstract provided.

Critical Care Pandemic Preparation: Considerations And Lessons Learned From Covid-19, Mervyn Mer, Diptesh Aryal, Nathan D. Nielsen, Ary Serpa Neto, Bhavna Seth, Madiha Raees, Martin W. Dunser, Kristina E. Rudd

Pathology Research and Scholarship

Pandemics, increases in disease incidence that affect multiple regions of the world, present huge challenges to health care systems and in particular to policymakers, public health authorities, clinicians, and all health care workers (HCWs). The recent COVID-19 pandemic has resulted in millions of severely ill patients, many of whom who have required hospital and intensive care unit (ICU) admission. The discipline of critical care is a vital and integral component of pandemic preparedness. Safe and effective critical care has the potential to improve outcomes, motivate individuals to seek timely medical attention, and attenuate the devastating sequelae of a severe pandemic. …