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Single-Crystal Elasticity Of Clinopyroxenes And The Viscosity Of Kimberlite Magma Under High Pressure-Temperature Conditions, Ming Hao

Earth and Planetary Sciences ETDs

Clinopyroxene is not only an important mineral phase in the pyrolitic upper mantle, but also one of the dominated mineral phases in the subducted or delaminated eclogitic materials in the deep Earth. Identifying and locating these eclogitic materials requires the knowledge of the thermoelastic properties of clinopyroxene under high pressure-temperature conditions. In this dissertation, we have measured the single-crystal elastic properties of jadeite and omphacite, which are major clinopyroxene phases in the eclogitic materials, up to 18 GPa 700 K by Brillouin spectroscopy and utilized these data to identify the eclogitic heterogeneities in the mantle.

We also measured the viscosity …

Relating Plant Community Structure To Carbon Dynamics In Semiarid Grasslands, Theodore D. Roper

Biology ETDs

Understanding how fine-scale changes in soil characteristics and plant community composition affect ecosystem functioning is key to predicting how biome shifts will affect regional and global carbon cycling. This is crucial in the dryland biomes of the US Southwest, projected to be one of the regions most affected by climate change. We examined fine-scale drivers of ecosystem function within two biomes – a Chihuahuan Desert grassland and Plains/Chihuahuan Desert ecotone – via long-term vegetation data, micrometeorological data, eddy covariance carbon flux measurements, and soil water and texture, finding that the ecotone site had over 30% higher soil water content, over …

Deformation Of Antigorite + Olivine Aggregates: Implications For Mantle Wedge Dynamics, Roselyn K. Hurlow

Earth and Planetary Sciences ETDs

Aggregates with varying volume proportions of antigorite and olivine were deformed at mantle wedge conditions of high-pressure (P) (2.5-7.6 GPa), -temperature (T) (675 K), and strain rates from ~1.0*10^-5 to ~1.0*10^-4 s^-1 using the deformation-DIA (D-DIA) to investigate deformation mechanisms and stress/strain partitioning. Macroscopic strain, lattice strain, and texture were measured in situ using synchrotron x-ray diffraction and radiography and were modeled for olivine using Elasto-Viscoplastic Self-Consistent (EVPSC) simulations. These modeled results are coupled with microstructure images and electron backscatter diffraction (EBSD) measurements results to determine stress and deformation mechanisms. Previous to this study, investigations have been …

Resource Estimation For Quantum Simulation Algorithms, Changhao Yi

Physics & Astronomy ETDs

A major application of quantum computers is simulating other quantum systems that are intractable to simulate classically. The broad family of algorithms for this problem go by the name of quantum simulation. Product formulas provide resource efficient and practical methods to simulate Hamiltonian dynamics. In this thesis, we study the resource estimation of quantum simulation by product formula from two aspects. First, we provide a detailed analysis of the algorithm itself. Using the effective Hamiltonian perspective, we successfully reduce the circuit complexity of quantum phase estimation and digital adiabatic simulation. Second, we analyze the performance of dynamical decoupling, a widely-used …

The Obata First Eigenvalue Theorem On A Seven Dimensional Quaternionic Contact Manifold, Abdelrahman Mohamed

Mathematics & Statistics ETDs

We prove an Obata-type rigidity result for the first eigenvalue of the sub-Laplacian on a compact seven dimensional quaternionic contact (QC) manifold which satisfies a Lichnerowicz-type bound on its QC-Ricci tensor, and has a non-negative Paneitz P -function. In particular, under the stated conditions, the lowest possible eigenvalue of the sub-Laplacian is achieved if and only if the manifold is QC-equivalent to the standard 3-Sasakian sphere.

Heterogeneity Of Gene Trees, Jonathan Nenye Odumegwu Unm

Mathematics & Statistics ETDs

Multilocus phylogenetic studies often show a high degree of gene tree heterogeneity —gene trees that have different topologies from each other as well as from the species tree topology. In some cases, this can lead to studies with hundreds of loci having distinct gene tree topologies. The degree of heterogeneity is expected to increase when there is a high degree of incomplete lineage sorting due to short branches (as measured in coalescent units) in the species tree. Other potential sources of heterogeneity include other biological processes such as introgression, recombination within genes, ancestral population structure, gene duplication and loss, and …

Sediment Influence On Escherichia Coli Variability In The Rio Grande During The Dry Season In The South Valley, Albuquerque, New Mexico, Kate Wilkins

Water Resources Professional Project Reports

With Escherichia coli (E. coli) being a widely used indicator of pathogen contamination, concentrations need to be fully understood to create effective best management practices for water quality managers. While management and impairment standards are focused on concentrations in the water column, there is research showing that E. coli attaches to sediment in the river and acts as a reservoir for E. coli. The Middle Rio Grande in the South Valley, New Mexico is classified as an impaired reach because it exceeds the E. coli water quality standard. Exceedances are commonly seen during the wet season in high flows, but …

Unm Pathology Pathfinder Summer 2022, Unm Department Of Pathology

Newsletters

No abstract provided.

Statistical Extensions Of Multi-Task Learning With Semiparametric Methods And Task Diagnostics, Nikolay Miller

Mathematics & Statistics ETDs

In this dissertation, I propose new approaches to multi-task learning, inspired by statistical model diagnostics and semiparametric and additive modeling. The newly designed additive multi-task model framework allows for flexible estimation of multi-task parametric and nonparametric effects by using an extension of the backfitting algorithm. Further, I propose new methods for statistical task diagnostics, which allow for the identification and remedy of outlier tasks, based on task-specific performance metrics and their empirical distributions. I perform a deep examination of the well-established multi-task kernel method and achieve theoretical and experimental contributions. Lastly, I propose a two-step modeling approach to multi-task modeling, …

Applications Of Machine Learning Algorithms In Materials Science And Bioinformatics, Mohammed Quazi

Mathematics & Statistics ETDs

The piezoelectric response has been a measure of interest in density functional theory (DFT) for micro-electromechanical systems (MEMS) since the inception of MEMS technology. Piezoelectric-based MEMS devices find wide applications in automobiles, mobile phones, healthcare devices, and silicon chips for computers, to name a few. Piezoelectric properties of doped aluminum nitride (AlN) have been under investigation in materials science for piezoelectric thin films because of its wide range of device applicability. In this research using rigorous DFT calculations, high throughput ab-initio simulations for 23 AlN alloys are generated.

This research is the first to report strong enhancements of piezoelectric properties …

Observational Constraints On The 520 Km Mantle Discontinuity, Mantle Transition Zone Anisotropy, And Local Seismicity At Mount St. Helens, Han Zhang

Earth and Planetary Sciences ETDs

Seismology provides valuable observational constraints to thermal and compositional states at inaccessible depths via understanding how elastic wave propagating through them. While many of fundament questions regarding solid Earth structures have been addressed during its more than 100 years history, some details remain unfilled and carefully designed approaches are needed to complete the pictures. This dissertation contributes observational constraints on three topics with newly developed methods. 1) We detected a controversial mantle discontinuity at about 520 km and concluded a mean mantle composition close to the Pyrolite model based on its seismic properties. 2) We isolated anisotropic effects in mantle …

To Infinity And Beyond: Shifting The Space Regulatory Framework To Create Conservation-Minded Expansion, Brandon M.G. Dekema

Natural Resources Journal

The early days of American expansion were categorized by policies that emphasized resource extraction and utilization. In turn, these policies created major conflicts with overuse, ownership, and rehabilitation−, many of which continue to this day. Now, the United States has begun to shift its focus to the next untapped frontier: outer space. As resource extraction in space grows more feasible, the United States has begun to shape a regulatory framework. In doing so, the United States is copying early American resource policy, leaving open the same gaps for conflicts arising from overuse, ownership disputes, and restoration. This paper analyzes historical …

Tree Ring Isotopic Reconstruction Of Hurricane Dolores, Jonathan Kane

Earth and Planetary Sciences ETDs

Tree rings contain high-resolution climate proxies of temperature and precipitation (Hughes et al., 1982; Fritts 2012; Scuderi 1993). The objective of this study was to use tree ring cellulose, specifically measuring δ18O - the oxygen-18 to oxygen-16 stable isotope ratio- to investigate the impact of Hurricane Dolores, a tropical cyclone that produced heavy precipitation in the Sierra Nevada in July 2015. Prior studies (Berkelhammer and Stott, 2008, 2009) have shown that conifer forests in California record the influence of varying precipitation regimes in their ring alpha-cellulose. Hurricane Dolores produced an intense precipitation event that inundated parts of the Mojave Desert …

Fixed Point Theorem Of Weak Compatible Maps Of Type (Y) In Neutrosophic Metric Space, A.N. Mangayarkkarasi, V. Jeyanth, M. Jeyaraman, V.B. Shakila

Neutrosophic Sets and Systems

No abstract provided.

An Intelligent Traffic Control System Using Neutrosophic Sets, Rough Sets, Graph Theory, Fuzzy Sets And Its Extended Approach: A Literature Review, Broumi Said, Malayalan Lathamaheswari, Prem Kumar Singh, A. Ait Ouallane, Abdellah Bakhouyi, Assia Bakali, Mohamed Talea, Alok Dhital, Nagarajan Deivanayagampillai

Neutrosophic Sets and Systems

No abstract provided.

Characterization Of Γ-Single Valued Neutrosophic Rings And Ideals, Muhammad Shazib Hameed, Zaheer Ahmad, Shahbaz Ali

Neutrosophic Sets and Systems

No abstract provided.

An Investigation In The Initial Solution For Neutrosophic Transportation Problems (Ntp), Maissam Jdid, Huda E. Khalid

Neutrosophic Sets and Systems

No abstract provided.

A Study Of Neutrosophic Cubic Hesitant Fuzzy Hybrid Geometric Aggregation Operators And Its Application To Multi Expert Decision Making System, Ateeq Ur Rehman, Muhammad Gulistan, Zahid Khan, Fuad S. Al-Duais

Neutrosophic Sets and Systems

No abstract provided.

A Study On Neutrosophic Algebra, T. Nagaiah, L. Bhaskar, P. Narasimha Swamy, Said Broumi

Neutrosophic Sets and Systems

No abstract provided.

An Mcdm Technique Using Cosine And Set-Theoretic Similarity Measures For Neutrosophic Hypersoft Set, Aiyared Iampan, Hamiden Abd El-Wahed Khalifa, Imran Siddique, Rana Muhammad Zulqarnain

Neutrosophic Sets and Systems

No abstract provided.

Cosine And Set-Theoretic Similarity Measures For Generalized Multi-Polar Neutrosophic Soft Set With Their Application In Decision Making, Rana Muhammad Zulqarnain, Aiyared Iampan, Imran Siddique, Hamiden Abd Elwahed Khalifa

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Fuzzy X-Sub Algebra Of Near-Subtraction Semigroups, J.Siva Ranjini, V. Mahalakshmi

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Goal Programming Approach For The Dash Diet Model, Srikant Gupta, Ahteshamul Haq, Irfan Ali

Neutrosophic Sets and Systems

No abstract provided.

Multi-Objective Production Planning Problem: Interval-Valued Trapezoidal Neutrosophic And Multi-Choice Parameters, Ahteshamul Haq, Mohd Arif Khan, Aquil Ahmed

Neutrosophic Sets and Systems

No abstract provided.

Single Valued Pentapartitioned Neutrosophic Graphs, Suman Das, Rakhal Das, Surapati Pramanik

Neutrosophic Sets and Systems

No abstract provided.

On New Types Of Weakly Neutrosophic Crisp Closed Functions, Ali Hussein Mahmood Al-Obaidi, Qays Hatem Imran, Murtadha Mohammed Abdulkadhim

Neutrosophic Sets and Systems

No abstract provided.

Theory And Applications Of Fermatean Neutrosophic Graphs, Said Broumi, R. Sundareswaran, M. Shanmugapriya, Assia Bakali, Mohamed Talea

Neutrosophic Sets and Systems

No abstract provided.

Neutrosophic Orbit Continuous Mappings, T. Madhumathi, F. Nirmala Irudayam

Neutrosophic Sets and Systems

No abstract provided.

Balanced Neutrosophic Graphs, S Sivasankar, Said Broum

Neutrosophic Sets and Systems

No abstract provided.

An Effective Container Inventory Model Under Bipolar Neutrosophic Environment, C. Sugapriya, S. Rajeswari, D. Nagarajan, Zarife Zararsız, Zakiya Said Mahad Al Amri

Neutrosophic Sets and Systems

No abstract provided.