Digital Commons Network^™

Differential Cbct Analysis Of Collum Angles In Maxillary And Mandibular Anterior Teeth In Patients With Different Malocclusions, Erin Shane Wan Ma

UNLV Theses, Dissertations, Professional Papers, and Capstones

Background: The collum angle is an angular measurement of the difference between the longitudinal axis of the crown and the longitudinal axis of the root. The aim of this study was to determine the mean collum angles for all maxillary and mandibular anterior teeth. In addition, the collum angles of different molar and skeletal classifications were compared for each anterior tooth.

Methods: Based on patient records obtained from the University of Nevada, Las Vegas Department of Orthodontics and Dentofacial Orthopedics, 326 CBCT scans were selected and divided into four molar and skeletal classifications. The patients were divided into Class I, …

Assessing A Potential Paleothermal Anomaly Near A Salt Wall Using (U-Th)/He Thermochronology And Silica Cementation Analysis, Onion Creek, Utah, Richard Gregory Ness

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Onion Creek salt wall in Fisher Valley, Utah is an exposed salt structure that lies adjacent to sandstones of the Permian age Cutler Group. The thermal conductivity of salt is two to four times greater than other sedimentary rocks and has been shown to act as a regional conduit for heat flow which has implications for petroleum systems in hydrocarbon exploration. Numerical models predict that thermal anomalies should extend 1.5 times the radius of a salt structure into adjacent strata. I hypothesized that an elevated paleothermal anomaly exists in sandstones of the Cutler Group where they are located near …

Canovas Canyon Rhyolites, Jemez Volcanic Field, New Mexico: Discrete Source Magmas, Or A Potential Caldera Forming Magma System?, Penelope Marie Padmore

UNLV Theses, Dissertations, Professional Papers, and Capstones

The Jemez volcanic field (JVF), New Mexico, is a caldera-forming volcanic field located at the junction of the Rio Grande Rift and the Jemez Lineament. The JVF is one of three large North American caldera-forming systems, including Long Valley, California and Yellowstone Plateau volcanic field, Wyoming, which have been active during the Quaternary. Because portions of the JVF are unusually well preserved, it offers a rare opportunity to study how such systems develop. Insight into the history of caldera-forming systems will contribute to the understanding of their potential future behavior. In the case of Yellowstone and Long Valley, that insight …

Analyses Of Streamflow Change Patterns And Correlation Of These Changes With Sea-Surface Temperature Fluctuations, Kazi Ali Tamaddun

UNLV Theses, Dissertations, Professional Papers, and Capstones

This thesis presents a comprehensive statistical analysis that determines the direction, rate, and interval of significant streamflow change patterns in the continental U.S. and correlates these changes with sea-surface temperature fluctuations. First, by using two non-parametric tests, namely, the Mann-Kendall trend test and the Pettitt’s test, the presence of long-term trends and abrupt shifts were determined at 10% significance level over continuously adjustable periods that stretched from 1903 to 2012. Modified versions of the tests were applied to account for the presence of persistence (autocorrelation) in data. Theil-Sen slope was determined to evaluate the rate of change across multiple temporal …

Cataract Surgery In Children From Birth To Less Than 13 Years Of Age: Baseline Characteristics Of The Cohort., Michael X. Repka, Trevano W. Dean, Elizabeth L. Lazar, Kimberly G. Yen, Phoebe D. Lenhart, Sharon F. Freedman, Denise Hug, Bahram Rahmani, Serena X. Wang, Raymond T. Kraker, David K. Wallace, Pediatric Eye Disease Investigator Group

Manuscripts, Articles, Book Chapters and Other Papers

OBJECTIVE: To describe baseline characteristics, initial postoperative refractive errors, operative complications, and magnitude of the intraocular lens (IOL) prediction error for refractive outcome in children undergoing lensectomy largely in North America.

DESIGN: Prospective registry study of children from birth to enrollment.

PARTICIPANTS: Total of 1266 eyes of 994 children; 49% female and 59% white.

METHODS: Measurement of refractive error, axial length, and complete ophthalmic examination.

MAIN OUTCOME MEASURES: Eye and systemic associated conditions, IOL style, refractive error, pseudophakic refraction prediction error, operative and perioperative complications.

RESULTS: Mean age at first eligible lens surgery was 4.2 years; 337 (34%) were(59%). Additional …

Simple Soil Quality Tests And Organic Management Practices For Orchards In The Intermountain West, Esther Oline Thomsen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Soil health is often overlooked as a long-term management strategy as growers face an increasing number of short-term management challenges in the Intermountain West. The costs of inputs are rising and water resources are becoming more limited. Soil with poor health typically requires more amendments and fertlizers to meet crop needs. Soil health tests can help reveal management practices that reduce soil health, as well as those that improve soil health. Practices known to improve soil health are reduced to no tillage, cover crop use- especially legumes, and addition of mulch and other organic materials. Soil health testing is not …

The Effects Of Rootstock, Scion, Grafting Method And Plant Growth Regulators On Flexural Strength And Hydraulic Resistance Of Apple, Stuart W. Adams

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The apple rootstock ‘Geneva^® 41’ (‘G.41’), is desirable for its resistance to fire blight, Erwinia amylovora, while producing high yields. However, ‘G.41’ and other Geneva^® selections tend to form weak graft unions in the nursery that are susceptible to breaking in the wind, at harvest, or during shipment. In order to understand and remedy this graft union weakness, six scions (‘Fuji’, ‘Gala’, ‘Honeycrisp’, ‘McIntosh’, ‘Pink Lady’, and ‘Scilate’) by seven rootstocks (‘G.41’, ‘G.935’, ‘G.214’, ‘G.11’, ‘M.9-NIC 29’, ‘B.9’ and ‘EMLA 26’), by two grafting methods (chip bud and saddle graft) in a factorial design were tested for graft …

Characterization Of The Substrate Interactions And Regulation Of Protein Arginine Methyltransferase, Yalemi Morales

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Protein arginine methylation is a posttranslational modification catalyzed by the family of proteins known as the protein arginine methyltransferases (PRMTs). Thousands of methylated arginines have been found in mammalian cells. Many targets of arginine regulation are involved in important cellular processes like transcription, RNA transport and processing, translation, cellular signaling, and DNA repair. Since PRMT dysregulation has been linked to a variety of disease states, understanding how the activity of the PRMTs is regulated is of paramount importance. PRMT1 is the predominant PRMT, responsible for about 85% of all arginine methylation in cells, but very little is known about how …

The Effect Of Prosody On Preschool Children’S Emotional, Cognitive, And Behavioral-Eye And Behavioral-Body Engagement During Story Time, Trevor Rowe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Many children have insufficient early literacy experiences and fail to obtain proficient emergent literacy before they enter kindergarten. Reading to young children has been positively linked to improving their emergent literacy. Numerous factors influence how engaged children are while being read to including the adult’s prosody, receptive vocabulary, and the home literacy environment. Using a quantitative quasi-experimental design, this study sought to understand the association among prosody, child engagement (emotional, cognitive, behavioral-eye, and behavioral-body), receptive vocabulary, and the home literacy environment. The sample included 76 3- to 5-year-old children from local child care centers and their parents. To understand the …

Best Practices For Volume Flow Rate Measurements Using Piv At The Exit Of A Turbulent Planar Jet, Rick Cressall

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Particle image velocimetry (PIV) is used to make volume-flow-rate measurements at the exit of a turbulent, planar nozzle. The objective of this report is to assess a range of data acquisition and processing parameters. Data is acquired for volume flow rates of Reynolds numbers between 10,000 and 100,000 for both two-component (2C) and stereo PIV. The parameters are systematically changed one at a time and evaluated using differences in uncertainty, calculation time, and volume- flow-rate deviation. Data acquisition parameters follow the trends of previous work. A multitude of processing parameters were varied for several PIV processing methods. Recommendations for each …

Front Matter And Table Of Contents (V. 87)

Présence Francophone: Revue internationale de langue et de littérature

No abstract provided.

« Nous Avons Besoin D’Ouvrir Le Pays » : Le Développement Et Le Scénario Clef Du Point De Vue Chrétien Dans L’Espace Social Des Séries Télévisées De Kinshasa, Katrien Pype

Présence Francophone: Revue internationale de langue et de littérature

This article offers a discussion of “development” rhetoric as expressed in and around television drama in Kinshasa, capital city of the Democratic Republic of Congo. Producers (artists and pastors of Awakening Churches; some individuals are both) contend that their work will transform society, will combat the social and political crisis and will contribute to the development of the nation. Pentecostal christians embrace the melodrama because these television serials emphasize the spiritual development of the individual. I argue that the fictive representation of witchcraft relates to the Pentecostal diagnosis of the crises, and that the narrative emplotment of the TV serials …

Parties Annexes

Présence Francophone: Revue internationale de langue et de littérature

No abstract provided.

Posttraumatic Stress Disorder Associated With Unexpected Death Of A Loved One: Cross-National Findings From The World Mental Health Surveys, Lukoye Atwoli, Dan J. Stein, Andrew King, Maria Petukhova, Sergio Aguilar-Gaxiola, Jordi Alonso, Evelyn J. Bromet, Giovanni De Girolamo, Koen Demyttenaere, Silvia Florescu

Internal Medicine, East Africa

Background: Unexpected death of a loved one (UD) is the most commonly reported traumatic experience in cross‐national surveys. However, much remains to be learned about posttraumatic stress disorder (PTSD) after this experience. The WHO World Mental Health (WMH) survey initiative provides a unique opportunity to address these issues.

Methods: Data from 19 WMH surveys (n = 78,023; 70.1% weighted response rate) were collated. Potential predictors of PTSD (respondent sociodemographics, characteristics of the death, history of prior trauma exposure, history of prior mental disorders) after a representative sample of UDs were examined using logistic regression. Simulation was used to estimate overall …

Server-Aided Public Key Encryption With Keyword Search, Rongman Chen, Yi Mu, Guomin Yang, Fuchun Guo, Xinyi Huang, Xiaofen Wang, Yongjun Wang

Research Collection School Of Computing and Information Systems

Public key encryption with keyword search (PEKS) is a well-known cryptographic primitive for secure searchable data encryption in cloud storage. Unfortunately, it is inherently subject to the (inside) offline keyword guessing attack (KGA), which is against the data privacy of users. Existing countermeasures for dealing with this security issue mainly suffer from low efficiency and are impractical for real applications. In this paper, we provide a practical and applicable treatment on this security vulnerability by formalizing a new PEKS system named server-aided public key encryption with keyword search (SA-PEKS). In SA-PEKS, to generate the keyword ciphertext/trapdoor, the user needs to …

Lossy Key Encapsulation Mechanism And Its Applications, Yamin Liu, Xianhui Lu, Bao Li, Haiyang Xue

Research Collection School Of Computing and Information Systems

We introduce a new notion, lossy key encapsulation mechanism (lossy KEM), which enhances the notion of key encapsulation mechanism with lossiness, and can be more efficient than lossy trapdoor functions. We show that lossy KEM can be constructed from lossy trapdoor functions, lossy trapdoor relations, and entropic projective hashing. Using lossy KEM as a building block, several previous constructions of lossy encryption and deterministic public key encryption can be generalized and improved in efficiency.

Managing One-To-One Initiatives: Implementation Analysis Through Expert Elicitation, Jordan R. Selvidge

Electronic Theses and Dissertations

A qualitative phenomenological study was conducted to identify and analyze issues in the implementation of one-to-one computing initiatives and provide solutions for improvement. An understanding of the implementation process was developed through the analysis of data collected through 27 interviews with teacher experts in the field who have worked with the implementation of one-to-one programs. Teachers were purposely selected from the following groups: those who were completing their first year of teaching, those who had between two and ten years of teaching experience, and those who had eleven plus years of total teaching experience. This study distinctly addresses one-to-one initiatives …

A Study Of The Perceptions Of Racial Equity In One Early Childhood Education Program, Dawn M. Meskil

Electronic Theses and Dissertations

Although public education in the United States has had remarkable growth and improvement since its beginning, significant inadequacies concerning racial equity continue to cast a shadow on the system. Despite desegregation efforts and specific attention to providing integrated school settings there has been little progress in establishing educational justice. The purpose of this case study was to uncover perceptions about racial inequity within Asheville City Schools as well as potential facilitators of equity. A qualitative case study using 10 guiding research questions was conducted to evaluate the perceptions of parents as well as educators at Asheville City Schools Preschool regarding …

Balloon Valvuloplasty For Pulmonic Stenosis In Two Dogs: Case Report, Chollada Buranakarl, Anusak Kijtawornrat, Wasan Udayachalerm, Sirilak Disatian Surachetpong, Saikaew Sutayatram, Pasakorn Briksawan, Sumit Durongpongtorn, Rampaipat Tungjitpeanpong, Nardtiwa Chaivoravitsakul

The Thai Journal of Veterinary Medicine

Balloon valvuloplasty for correction of congenital pulmonic stenosis (PS) in two dogs by intervention technique was first reported in Thailand. Both dogs did not show any clinical signs related to congestive heart failure. Physical examination in both dogs revealed heart murmur. Electrocardiographs of both dogs were recorded and showed normal sinus rhythm with deep S wave. In the first dog, thoracic radiograph revealed cardiomegaly with enlargement of the main pulmonary artery and left deviation of the apex due to right ventricular enlargement. Definitive diagnosis of PS was performed by echocardiography. Computed tomography (CT) of both dogs demonstrated stenosis of the …

An Exploratory Study Of Campus Ministries Affiliated With Churches Of Christ In Ghana, Frank Obeng Essien

Electronic Theses and Dissertations

The Churches of Christ in Ghana commemorated 50 years of the Restoration Movement in Ghana in 2012. As part of the historical development of this community in Ghana, the number of individuals who have accessed higher education through the various institutions of higher learning in the country have increased significantly. This development also led to the emergence of campus churches to meet the spiritual needs of members of this faith-tradition as they pursue academic interests on the various university campuses. This development notwithstanding, almost no literature exists which provides a record of the historical evolution of these campus churches and …

Measuring Organizational Climate At The Abilene-Taylor County Public Health District, Sarah Floyd

Electronic Theses and Dissertations

The aim of this study was to answer the question, according to the Competing Values Framework, what is the organizational climate of the Abilene-Taylor County Public Health District (ATCPHD)? Organizational climate for this study refers to the collective perceptions of employees on their interactions with their peers, management, and the organization. This study surveyed the 64 employees at the ATCPHD with the Organizational Climate Measure (OCM). Forty employees participated in the study. The study determined that the climate of the ATCPHD, according to Competing Values Framework (CVF), was the Human Relations organizational climate with a secondary climate of Relational Goals. …

Fluorine Atom Influence On Intramolecular Hydrogen Bonding, Isomerization And Methyl Group Rotation In Fluorinated Acetylacetones, Brett De Vries, Mark Muyskens

University Faculty Publications and Creative Works

1-Fluoro-pentane-2,4-dione (monofluoroacetylacetone, MFAA) is an asymmetric β-diketone with a strong intramolecular hydrogen bond similar to acetylacetone (AA) and its fluorinated analogs 1,1,1-trifluoro-(TFAA), and 1,1,1,5,5,5-hexafluoroacetylacetone (HFAA). The presence of a fluorine atom in MFAA has the potential to open an HF elimination channel in its gas-phase photochemistry motivating this study of MFAA hydrogen bonding by computer modeling using Density Functional Theory (DFT). As a context, we also report DFT modeling of AA and selected fluorinated acetylacetones: 1,1-difluoro-pentane-2,4-dione (difluoroacetylacetone, DFAA), TFAA, and HFAA. The most stable molecular structure for all three asymmetric β-diketones (MFAA, DFAA and TFAA) is the isomer with the …

Metal And Glass: An Investigation Of Possible Historic Period Native American Sites In Wind Cave National Park, Morgan C. Beyer

Department of Anthropology: Theses and Student Research

The Black Hills region was one of the last areas of the American West where Native tribes were able to escape the intervention of the federal government. Because of this and the cultural ties that many Plains Indian tribes hold to the area, this region would seem to be one where non-reservation historic period Native American sites are abundant. The goals of this research were to identify markers that could be utilized by archaeologists to differentiate Native American sites and Euro American sites from the same historic time period in the Black Hills Region, positively identify the occupation of certain …

The Effects Of Anthropogenic Stressors On Mercury Concentrations And Community Composition Of Freshwater Zooplankton, Meredith Powers Jordan

Dissertations and Theses

Methylmercury (MeHg) bioaccumulation in freshwater aquatic systems is impacted by anthropogenic stressors, including climate change and excess nutrients. The goal of this study was to determine how warmer water temperatures and excess nutrients would impact zooplankton communities and phytoplankton concentrations, and in turn increase or decrease MeHg concentrations in freshwater zooplankton. I used a 2x2 factorial design to determine if the interaction of temperature and nutrients would impact plankton metrics and zooplankton MeHg concentrations. Mesocosms were filled with Hg-contaminated water and plankton from Cottage Grove Reservoir, Oregon, a waterbody that has experienced decades of elevated MeHg concentrations and corresponding fish …

Legislative Exactions And Progressive Property, Timothy M. Mulvaney

Faculty Scholarship

Exactions — a term used to describe certain conditions that are attached to land-use permits issued at the government’s discretion — ostensibly oblige property owners to internalize the costs of the expected infrastructural, environmental, and social harms resulting from development. This Article explores how proponents of progressive conceptions of property might respond to the open question of whether legislative exactions should be subject to the same level of judicial scrutiny to which administrative exactions are subject in constitutional takings cases. It identifies several first-order reasons to support the idea of immunizing legislative exactions from heightened takings scrutiny. However, it suggests …

Inefficient Efficiency: Crying Over Spilled Water, Vanessa Casado-Pérez

Faculty Scholarship

As the drought in Western states worsens, the agricultural sector is being criticized for failing to adopt technical responses, such as shifting to less water-demanding crops and state-of-the-art irrigation systems, in a timely manner. However, these responses can have the reverse effect: they can increase water consumption. Technological responses alone are insufficient to reduce water consumption if unaccompanied by changes in how the law defines and allocates water rights. This paper proposes a redefinition of water rights to ensure that changes in crops or irrigation techniques are socially efficient.

In the West, which uses the doctrine of prior appropriation to …

Thsd1 (Thrombospondin Type 1 Domain Containing Protein 1) Mutation In The Pathogenesis Of Intracranial Aneurysm And Subarachnoid Hemorrhage, Teresa Santiago-Sim, Xiaoqian Fang, Morgan L. Hennessy, Stephen V. Nalbach, Steven R. Depalma, Ming Sum Lee, Steven C. Greenway, Barbara Mcdonough, Georgene W. Hergenroeder

School of Medicine Publications

Background and Purpose

A ruptured intracranial aneurysm (IA) is the leading cause of a subarachnoid hemorrhage (SAH). This study seeks to define a specific gene whose mutation leads to disease.

Methods

More than 500 IA probands and 100 affected families were enrolled and clinically characterized. Whole exome sequencing was performed on a large family, revealing a segregating THSD1 mutation. THSD1 was sequenced in other probands and controls. Thsd1 loss-of-function studies in zebrafish and mice were used for in vivo analyses, and functional studies performed using an in vitro endothelial cell model.

Results

A nonsense mutation in THSD1 (thrombospondin type-1 domain-containing …

False Positives On Neuropsychological Measures Of Effort Among Bilingual Neurologically Intact Mexican Americans, Arnoldo Amador Jr.

Theses and Dissertations

The present study examines the performance of bilingual Mexican Americans on neuropsychological measures of effort in language and visual-perceptual formats. Optimal/suboptimal effort cutoff scores derived from monolingual English Speakers were used to test participants divided by language of administration and bilingual groupings based upon Spanish-English difference scores on the Woodcock Munoz Language Survey-Revised Picture Vocabulary subtest. Participants produced more false positives (misidentification of suboptimal effort) on the Reliable Digit Span, a language formatted measure, and similar rates of false positives on visual-perceptual effort measures: Test of Memory Malingering and the Dot Counting Test as compared to established rates using monolingual …

Academic Relationships Between At-Risk High School Students And Teachers Within An Alternative School Setting: "It Is More Than Just Academics, It's Attitude", Daniel R. Galdeano

Theses and Dissertations

The first public schools in the United States were originally created to give all school-aged children the opportunity to gain access to a well-rounded education (Cable, Plucker & Spradlin, 2009). Options in public schools, preparation for high-stakes standardized tests, and graduation requirements are among the many educational reform policies that have been implemented in hopes of enabling students to reach their academic potential (Lange & Sletten, 2002). As a substitute to dropping out, alternative schools are among the leaders in the charge to try to curb the dropout problem that schools are facing. Alternative schools have existed since the civil …

Developing A Multimetric Index To Assess Resaca Ecosystem Health, Buford J. Lessley

Theses and Dissertations

As the only freshwater ecosystem in the lower Rio Grande Valley aside from the Rio itself, resacas are critical habitat for many species of flora and fauna. Old distributaries of the Rio Grande, resacas provided conveyance routes moving floodwater to the Laguna Madre. Today these wetlands are novel ecosystems and are artificially maintained. Urbanization and agriculture have lead to sedimentation, habitat loss, contaminants, poor water quality, and invasive species. The objective of this study was to assess and monitor resaca pools and to compose the Resaca Health Index (RHI) from selected indicators of ecosystem structure and function including leaf litter …