Digital Commons Network^™

Optical Angular Scatterometry: In-Line Approach For Roll-2-Roll And Nano-Imprint Fabrication Systems, Juan Jose Faria-Briceno

Electrical and Computer Engineering ETDs

As critical dimensions continue to shrink and structures become more complex, metrology processes are challenging to implement during in-line nanomanufacturing. Non-destructive, non-contact, and high-speed conditions are required to achieve proper metrology processes during in-line manufacturing. Optical scatterometry is a nanoscale metrology tool widely used in integrated circuit manufacturing for characterization and quality control. However, most applications of optical scatterometry operate off-line. A high-speed, in-line, non-contact, non-destructive scatterometry angular system has been demonstrated in this work to scan pattern surfaces during real-time nano-fabrication.

Our system has demonstrated scanning capabilities using flat, 1D and 2D complex structures. The flat surface samples consist …

University Of New Mexico Board Of Regents Minutes For November 20, 2019, University Of New Mexico Board Of Regents

Board of Regents Meeting Minutes

No abstract provided.

Some Preliminary Observations With The Native Health Database, Jonathan Pringle

Native Health Database project records

Presentation about the NHD for the ATALM annual meeting.

Source-Separated Urine Nitrification And Ion Accumulation In Sub-Irrigated Planters Using Domestic Wastewater, David A. Forrest

Civil Engineering ETDs

Wastewater reuse is a field at the crux of the food-energy-water nexus. This nexus is a modern attempt at qualifying relationships between resource availability and stewardship, and the choices and needs of market-driven culture. This study aims to develop simple low-tech systems to use domestic wastewater or source-separated urine, treated onsite, for domestic container garden water and nutrient supply. Four experiments were conducted to assess specific aspects of this technology to help develop relevant stages in this reuse chain.

The objective of the first experiment was a proof of concept to assess compatibility of sub-irrigated planters (SIP) with treated domestic …

Neuron Specific Gene 2 (Nsg2): A Novel Regulator Of Excitatory Neurotransmission Via Ampa Receptor Trafficking At A Subset Of Glutamatergic Synapses, Praveen Chander

Biomedical Sciences ETDs

Members of the Neuron-Specific Gene family (NSG1-3) play critical roles in excitatory synaptic transmission via regulation of AMPA receptor surface expression within the post-synaptic density (PSD). While NSG1 and NSG3 regulate AMPAR recycling and endocytosis, respectively, the function of NSG2 has remained elusive. Here we undertook a series of studies to assess the role of NSG2 in excitatory synaptic transmission. We found that a portion of NSG2 punctae localized with HOMER1 and surface AMPARs at excitatory synapses and that NSG2 AMPAR subunits in mouse brain. Knockout of NSG2 selectively impaired the frequency of AMPA mEPSCs, while overexpression caused a significant …

Measurement Of Photoionization Rates In Air, Justin K. Smith

Electrical and Computer Engineering ETDs

The ionization of gas molecules from the absorption of photons produced in different parts of a discharge is an important process in the development of streamers. Photoionization rates are essential in the propagation of streamers and are therefore important in simulations of computational codes. Although streamers are widely used in computational codes, there is a limited data set on the experiments measuring photoionization rates in gases. Usually, the photoionization rate data used in computational codes comes from a single source and the validity of this data combined with the photoionization model has been questionable. It is postulated there is a …

Vision-Based Autonomous Tracking Of A Non-Cooperative Mobile Robot By A Low-Cost Quadrotor Vehicle, Cheikhna Ahmed Tidiane Sy

Electrical and Computer Engineering ETDs

The goal of this thesis is the detection and tracking of a ground vehicle, in particular a car-like robot, by a quadrotor. The first challenge to address in any pursuit or tracking scenario is the detection and unique identification of the target. From this first challenge, comes the need to precisely localize the target in a coordinate system that is common to the tracking and tracked vehicles. In most real-life scenarios, the tracked vehicle does not directly communicate information such as its position to the tracking one. From this fact, arises a non-cooperative constraint problem. The autonomous tracking aspect of …

Software Design For Probabilistic Safety: Stochastic Reachability And Circadian Control, Joseph D. Gleason

Electrical and Computer Engineering ETDs

Stochastic reachability is an important verification tool that provides probabilistic assurances of safety in a variety of contexts. In engineered systems, safety may be synonymous with the ability of the system to avoid "bad" constraints on the state space, that constitute collision, departure from a flight envelope, or other undesirable phenomenon. In biomedical systems, assurance of safety (such as the mandate to ``do no harm'') are considerably complicated by the fact that there is a lack of physics-driven models, extensive signal processing is needed to capture the underlying state of the system, and the stochasticity inherent to the system may …

Proof Of Claim Form: John Doe 192b, Hall & Monagle, Llc

Proofs of Claims

No abstract provided.

Essays On Agricultural Water Pollution And Human Health, Na Lu

Economics ETDs

This dissertation mainly focuses on agricultural policies, water pollution and human health. Chapter.2 examines the causal impact of agricultural water pollution on individual health outcomes. The findings suggest that agricultural water pollution worsens health outcomes and these adverse health effects appear to be largely due to contaminated drinking water. Chapter.3 explores both of the intended wealth effect and unintended pollution effect on human health caused by China’s agricultural support polices. I find that although the income effect dominates on reducing the overall sickness, the pollution effect is more substantial on the diarrhea incidence and adult BMI. Income affects slightly higher …

Amaro E Piccante: The Production And Use Of Terroir In The Scandal Of Italian Extra Virgin Olive Oils, Daniel Gene Shattuck Ii

Anthropology ETDs

This dissertation explores the revalorization of Italian extra virgin olive oils after a food scare that revealed some oils to be inauthentic or adulterated. In the process of distinguishing products, producers and tasters looked toward terroir or the “taste of place” as proof of their declarations of authenticity and as a method for differentiating oils. However, in this attempt, they engaged with other pervasive tropes of difference including those that intersected with belonging, the local and global, and race. This dissertation argues that terroir is a material-semiotic object; that while it may be grounded in the materiality of oils is …

Seventeenth-Century Spanish Colonial Identity In New Mexico: A Study Of Identity Practices Through Material Culture, Caroline Marie Gabe

Anthropology ETDs

This dissertation explores how seventeenth-century Spanish colonial households expressed their group identity at a regional level in New Mexico. Through the material remains of daily practice and repetitive actions, identity markers tied to adornment, technological traditions, and culinary practices are compared between 14 assemblages to test four identity models. Seventeenth-century colonists were eating a combination of Old World domesticates and wild game on colonoware and majolica serving vessels, cooking using Indigenous pottery, grinding with Puebloan style tools, and conducting household scale production and prospecting. While assemblages are consistent in basic composition, variations are present tied to socioeconomic status. This blending …

Npr's Tiny Desk Concert Series: Vocalities Of Outrage And Acts Of Gaiety, Aubrie M. Powell

Music ETDs

The Tiny Desk concert series features live video-recorded performances of artists at the desk of NPR Music’s Bob Boilen, the series’ main host. This thesis interrogates NPR Music’s values and the ways artists both manifest and queer those ideals in performance. I argue, in light of the 2016 election, performers challenge NPR Music’s taste system through two modes of subversion. The first mode considers vocalities of outrage specifically in the performances of Saul Williams and the Drive-By Truckers. These performers shift their social positions in expressions of outrage through vocality—as the embodied materiality of the voice and its constructed meanings …

Optimal Relaxation Weights For Multigrid Reduction In Time (Mgrit), Masumi Sugiyama

Mathematics & Statistics ETDs

Based on current trends in computer architectures, faster compute speeds must come from increased parallelism rather than increased clock speeds, which are stagnate. This situation has created the well-known bottleneck for sequential time-integration, where each individual time-value (i.e., time-step) is computed sequentially. One approach to alleviate this and achieve parallelism in time is with multigrid. In this work, we consider the scheme known as multigrid-reduction-in-time (MGRIT), but note that there exist other parallel-in-time methods such as parareal and the parallel full approximation scheme in space and time (PFASST). MGRIT is a full multi-level method applied to the time dimension and …

Beyond Spectator Sports: Scale Development And Validation For Mediated Sports Consumption, Min Jung Kim

Health, Exercise, and Sports Sciences ETDs

One apparent trend impacting spectator sports is the shift in sport fans’ consumption opportunities, having now gained many alternative formats to access sporting events. Sport fans are allowed intentionally and constantly to move from platform to platform and access content on demand. These substitute platforms, including home television, online streaming, social networking, sports bars, and movie cinema, are considered mediated sports consumption, alternative outlets to actual physical attendance of sporting events. As the phenomenon of mediated sports consumption has become a predominant means of spectating sports consumption practice, it is more important than ever to identify and understand how mediated …

Comparative Processes Of Sociopolitical Development In The Foothills Of The Southern Maya Mountains, Amy Elizabeth Thompson

Anthropology ETDs

Human behaviors and settlement decision-making can be evaluated through an assessment of settlement patterns. This dissertation examines the human behaviors that guide settlement selection, first through an analysis of settlement patterns to assess intra-site social communities, and second how communities develop over time. Three case studies examine settlement structure and what influences settlement selection within archaeological and modern contexts from the same region, southern Belize. Specifically, this dissertation focuses on two Classic period (250-800 CE) Maya centers, Uxbenká and Ix Kuku’il, and more than 50 modern Maya villages. Extensive survey and excavations were conducted to compare the development of settlements …

Assessment Of Particulate Matter Toxicity And Physicochemistry At The Claim 28 Uranium Mine Site In Blue Gap, Az, Jessica G.S. Begay

Biomedical Sciences ETDs

Particulate matter (PM) inhalation is known to have adverse effects on the respiratory and cardiovascular systems. Community concerns in the southwestern US have been expressed in regions of extensive open-pit hard-rock (especially uranium) mining that windblown dusts may pose an excess health risk. To address these concerns, we have undertaken a campaign to detail: (1) the amount and composition of the PM_2.5 in the region, (2) meteorological characteristics, such as wind speed and direction, and (3) and immunological and physiological responses of mice after PM_2.5 exposures.

For toxicity studies, C57BL/6 and apolipoprotein E-null (ApoE^-/-, a vascular …

The Association Of Psychological Distress And Mental Health With English Language Acquisition Of Recently Resettled Refugees In The United States, Charlisa C. Christian

Sociology ETDs

Host country language proficiency among resettled refugees has been associated with better mental health; yet, in qualitative studies, refugees describe psychological distress acting as a barrier to their learning. To clarify varying results, this longitudinal study of refugees from Africa, the Middle East, and Afghanistan (n=290) examined language acquisition with positive mental health and psychological distress as distinct concepts on correlated unipolar dimensions (Keyes 2002; Rumbaut 1989). With multilevel modeling, initial English speaking ability was significantly related to increasing positive mental health over time, indicating host country language proficiency acts as a protective factor for refugees, and supporting the growing …

Calling All Corpses: An Examination Of The Treatment Of The Dead In Old English Literature, Jessica Troy

English Language and Literature ETDs

The care and disposal of the dead bodies, an unavoidable reminder of one’s mortality, rarely receives in-depth literary attention. In early medieval England, the Anglo-Saxons dealt with corpses but seldom discussed the undertaking in written documents. Instead they focused on the grandiose deeds of heroes like Beowulf and the holy lives of revered saints.

This dissertation examines various genres of Old English literature to identify times when authors discuss corpses and to what end these discussions led. Hagiographers, for example, describe the corpses of certain saints such as Æthelthryth and Edmund at length while the bodies of other saints are …

Using Natural Phenomena To Study The Ionosphere, Joseph Benjamin Malins

Physics & Astronomy ETDs

This dissertation explores novel techniques for observing the ionosphere using natural signals. The ionosphere is a region of plasma hundreds of kilometers above the Earth that affects communication and remote sensing applications across the world. Traditional techniques for observing the ionosphere involve using man made radio signals, either to reflect the signal at HF frequencies or to pass several signals through the ionosphere and compare the difference the ionosphere makes in the signals. However, such techniques are limited by the ability of equipment to produce these signals and by the numerous laws and regulations governing transmission of signals in the …

Synthesis & Characterization Of Polymer-Modified Calcium Silicate Hydrate For Wellbore Applications, Jeremy J. Starr

Civil Engineering ETDs

Calcium Silicate Hydrate (C-S-H) acts as the primary binding material that is mainly responsible for the strength and durability of concrete. C-S-H constitutes approximately 67% of hydrated ordinary Portland cement by volume. C-S-H forms with a range of stoichiometric formula dependent on many factors such as CaO/SiO₂ ratio. The continued rise of hydrocarbon exploration in the United States has developed the need for improved wellbore cementing materials. Binders with good bond strength to steel and rock interfaces, low shrinkage, and high cracking strength are sought by the oil and gas industry. The incorporation polymers and nano materials has evolved …

Mrg-Cap Symposium Agenda, Middle Rio Grande Conservancy District, Utton Transboundary Resources Center, Natural Heritage New Mexico, Colorado Natural Heritage Program, Unm Museum Of Southwestern Biology, Sustainable Water Resources, Unm

Middle Rio Grande Conservation Action Plan Symposium (2019)

No abstract provided.

Validation Of Gaseous Absorption & Cloud Attenuation Models Utilizing A 72 Ghz Terrestrial Link, Ralph Lyndon Gesner

Electrical and Computer Engineering ETDs

Interest in the W & V-bands of the radio frequency (RF) spectrum has become steadily more desirable for system designers due to the ever increasing need for greater communication bandwidths and higher data rates. The 40 GHZ to 110 GHz range that constitutes the W & V-bands provide a unique solution to both of these current demands by providing a bandwidth nearly double that of all current RF frequencies in use. To date, this range has only been used for point to point satellite and short link communications meaning these bands have remained largely unexplored and undeveloped.

To capitalize on …

Dynamics Of Avian Elevational Ranges Reveal Hidden Evolutionary Forces, Chauncey R. Gadek

Biology ETDs

The distribution of life across the Andes mountains reflects historical elevational-range contraction and expansion. Whereas contraction implies specialization, expansion requires overcoming hidden barriers. Three eco-evolutionary phenomena may drive patterns in rates of elevational range evolution: (1) The Dobzhansky-MacArthur Phenomenon (DMP) predicts lower rates of upward expansion with harsher physical conditions, while downward expansion increases with lower diversity; (2) the evolutionary tendency toward specialization predicts contraction increases when ranges are broad; and (3) natural selection for respiratory performance could suppress expansion across mid-elevations due to gene-environment mismatch. We modeled elevational range shifts of Neotropical landbirds. Contrary to the DMP, upward expansion …

Chronic Environmental Exposure To Metal Mixtures In Tribal Populations And Potential Immune System Effects, Jennifer J. Ong

Biomedical Sciences ETDs

Hardrock mining in the United States (US) has left a legacy of mixed metal mine waste sites. Wastes may contain multiple metals of health concern, including arsenic, cadmium, lead, mercury, and uranium, among others. Mining waste sites are disproportionately located on or contiguous to the watersheds of tribal lands. Due to proximity, and because of reliance on natural resources to maintain traditional diets and customs, Native American communities’ contact with multiple metals is often increased. Two impacted communities are the Cheyenne River Sioux Tribe (CRST) and Navajo Nation. Both tribes have expressed concerns that metals in mine waste adversely affect …

Integrated Chirped-Grating Spectrometer-On-A-Chip, Shima Nezhadbadeh

Optical Science and Engineering ETDs

In this dissertation we demonstrate a new structure based on waveguide coupling atop a silicon wafer using a chirped grating to provide the dispersion that leads to a high-resolution, compact, fully integrable and CMOS-compatible spectrometer. Light is both analyzed and detected in a single, completely monolithic component which enables realizing a high-resolution portable spectrometer with an extremely compact footprint. The structure is comprised of a SiO₂/Si₃N₄/SiO₂ waveguide on top of a silicon wafer. Grating regions are fabricated on the top cladding of the waveguide. The input light is incident on a chirped grating …

Near-Field And Far-Field Microscopic And Spectroscopic Characterizations Of Coupled Plasmonic, Excitonic And Polymeric Materials, Chih-Feng Wang

Optical Science and Engineering ETDs

The properties of localized surface plasmons (LSP) have been broadly utilized for chemical sensing, surface enhanced Raman spectroscopy, biomedical imaging and photothermal treatments. By exploiting well-established plasmonic effects, the spectroscopic investigation of intriguing quantum phenomena, such as excitonic interband and intersubband (ISB) transitions in semiconductor heterostructures, was examined and extended in both far- and near-field optical measurements. For far-field characterization, we used colloidal plasmonic Au nanorods (AuNRs) to increase the quantum efficiency of InGaAs/GaAs single quantum well. By analyzing the temperature-dependent photoluminescence enhancement as a function of GaAs capping layer thickness, we attributed the mechanism of the LSP enhancement to …

Implementations Of Resilience Engineering For Natural System Disturbances: A Panarchical Perspective, Mark Charles Stone Victoria Jaramillo

Civil Engineering ETDs

This body of work seeks to advance knowledge of resilience and resilience engineering (RE) from a practical and theoretical perspective. Three distinct applications of resilience and RE that align two fundamental frameworks are presented. The first application, a vulnerability assessment, exemplifies the largest scale of panarchy and the measuring aspect of RE. The second application, a Bayesian network approach, exemplifies the intermediate scale of panarchy and the modeling aspect of RE. The third application, an engineering design project using analytical hierarchy process (AHP), exemplifies the smallest scale of panarchy and the building aspect of RE. Studying these applications enriches understanding …

The Development Of A Novel Experiment On Confined, Flattened Brazilian Disks To Correlate Damage And Permeability In Brittle Geo-Materials, Samuel H. Boyce

Civil Engineering ETDs

This research develops a novel experiment using flattened Brazilian disks under confining pressure with concurrent permeability measurements and acoustic emission monitoring. The purpose of this work is to correlate damage and permeability in brittle geo-materials. Two series of tests are performed on concrete and one series on tuff, under a range of confining stresses between 2.76 and 13.79 MPa. Tests were continued beyond peak stress conditions, capturing data in the post-peak region. The acoustic emission data (cumulative energy and counts) are used to identify damage thresholds and track the progression of microscopic damage. This quantified damage is then correlated to …

Electromagnetic Analysis Of Bidirectional Reflectance From Roughened Surfaces And Applications To Surface Shape Recovery, Julian Antolin Camarena

Physics & Astronomy ETDs

Scattering from randomly rough surfaces is a well-established sub area of electrodynamics. There remains much to be done since each surface and optical processes that may occur in within the scattering medium, and countless other scenarios, is different. There are also illumination models that describe lighting in a scene on the macroscopic scale where geometrical optics can be considered adequate. Of particular interest for us is the intersection of the physical scattering theories and the illumination models. We present two contributions: 1) A minimum of two independent images are needed since any opaque surface can be uniquely specified in terms …