Digital Commons Network^™

Undergraduates’ Preparedness For College-Level Work In Stem: The Importance Of Reading And Understanding Scientific Theories, Arguments, And Data, Ewa M. Burchard

CGU Theses & Dissertations

This study focuses on undergraduates’ preparation for college level courses. In recent international PISA results United States students fall behind seventeen countries on the computer-based reading proficiency test. They have scored low for over a decade, in spite of spending more than one hundred-thousand dollars per student on education. This US score is similar to, or lower than, the scores of other countries where spending is lower. Considering reading performance statistics from the international PISA assessment and the inconclusive results from reading comprehension studies across media, the concern arose whether today’s high school students are well prepared for college level …

Graph-Based Acoustic Clustering And Classification, Justin Youngho Sunu

CGU Theses & Dissertations

The rapid growth of audio data collection in various domains necessitates advanced techniquesfor efficient analysis and classification. This dissertation proposes new approaches for categorizing acoustic data, using both unsupervised and semi-supervised learning methods. Starting with raw audio, we preprocess the signal to segment it into time windows, each of which we consider as an independent data point. We use the short-time Fourier transform to describe the signal in a given time window as a set of Fourier coefficients. We interpret the resulting frequency signature as a high-dimensional feature description of each data point. We then develop a graph-based approach for …

Outside The Coffee Belt: A Study On The Suitability And Sustainability Of Coffee Plants In California Due To Climate Change Using Gis, Vanessa Arias Casillas

CGU Theses & Dissertations

California has a unique climate that is suitable for growing a variety of agricultural crops. As stated by the California Department of Food and Agriculture, California’s agricultural abundance includes more than 400 commodities, and of these, over a third of the vegetables and three-quarters of the fruits and nuts consumed in the United States are grown in California. Mark Gaskell, Ph.D., a California Cooperative Extension Farm Advisor, recently began an experiment to grow coffee plants; he believed that due to changing climatic conditions, California farmers could start to grow coffee plants in their fields. Several farmers also agreed to experiment …

Three Essays In Behavioral Economics, Zhou Fang

CGU Theses & Dissertations

Well-being is important because it directly impacts an individual's quality of life and overall happiness. It encompasses physical, mental, and social aspects, promoting a balanced and fulfilling existence. Optimal well-being leads to improved productivity, resilience, and positive contributions to society, creating a healthier and more harmonious world.

This dissertation delves into the realm of interdisciplinary research, bridging economics and psychology, to investigate several critical areas that affect peoples’ wellbeing. It explores gender discrimination within peer review processes, seeks advancements in the measurement of subjective well-being, and analyzes the influence of cultural factors on prosocial behaviors.

The first chapter delves into …

Data Industry Competency For Post High School African American Males, Anthony C. Lyons

CGU Theses & Dissertations

There has been a great deal of news, discussion, and outcry regarding the lack of diversity in science, technology, engineering, and math (STEM) related fields, be it industry or academia. On many comparative lists regarding STEM students and workers, African American males are an unacceptably low percentage of the population. The problem is quite complex, and the reasons are numerous, including historic and present-day inequities, systemic social-political harms, higher education access and affordability, and difficulties obtaining acceptable levels of proficiency based on industry standards. Research shows supplying students with the resources, the state-of-the-art tools and innovations required to succeed help …

A New Credit Scoring Model To Reduce Potential Predatory Lending: A Design Science Approach, Anna Zakowska

CGU Theses & Dissertations

This research examines the potential impact of implementing a novel credit scoring model that integrates attributes beyond the traditional FICO model. It aims to address issues related to predatory lending and the financial exclusion affecting individuals often categorized as 'credit invisible,' 'credit unscorable,' 'unbanked,' and 'underbanked.' These individuals typically face difficulties in establishing or repairing a credit history, which poses a challenge for financial institutions in accurately evaluating their creditworthiness. This gap in the credit assessment process often opens doors to unfair lending practices. To tackle this problem, a systematically designed, built, tested, and evaluated innovative credit scoring model was …

Vulnerable Fraudsters: Reverse Affinity Fraud In Cases Of Public Hoaxes, Caroline E. Vordtriede

Criminal Law Practitioner

This Article examines reverse affinity fraud, which is affinity fraud in the context of public hoaxes. In traditional affinity fraud the fraudster targets a vulnerable group, whereas in cases of public hoaxes the fraudster portrays herself as part of a vulnerable group and targets the well-meaning and sympathetic general public. This Article explores the mindset and characteristics of vulnerable fraudsters in reverse affinity frauds by analyzing the cases of Sherri Papini and Lacey Spears. Both Papini and Spears utilized social media and online giving sites to defraud the public, and their cases highlight the unique challenges prosecutors have in proving …

Semiparametric Multivariate Analysis Of Covariance Test Of Treatment Effects, Leonard Allan F. Almero, Elfred John C. Abacan

Journal Article

Traditional multivariate analysis of covariance test is based on restrictive assumptions like homoscedasticity and normality of errors. A semiparametric multivariate analysis of covariance model is postulated. Nonparametric regression and multivariate analysis of variance are imbedded into the backfitting algorithm to estimate the model. The responses are adjusted for covariate effect through a nonparametric function of the covariates. Simulation study indicates that a bootstrap-based test for treatment effects is correctly sized. The proposed semiparametric multivariate analysis of covariance is shown to be powerful in detecting multivariate differences in the presence of nonlinear covariates and is robust to different error distributions with …

When Congress Passes The Buck: How Russia’S Invasion Of Ukraine Exposed Flaws In Granting The President Sanctioning Powers, Artem M. Joukov, Samantha M. Caspar

Seattle University Law Review

The United States (U.S.) Constitution provides few limitations on endowing the Executive Branch with powers to govern foreign trade, which was initially granted to the Legislature. In a world where global trade dominates, the power over foreign trade can be more important than the power over domestic matters. Leaving unrestrained trade authority to the Executive Branch may cause hazards for Americans and foreigners alike. Russia’s war in Ukraine demonstrates the flaws in permitting the Executive Branch to unilaterally sanction foreign states. This Article demonstrates how reactive Executive Branch policies infringed on the welfare and safety of American citizens and foreigners …

Design And Field-Scale Demonstration Of The Buoyant-Kill Process For Restoring Integrity Of Wells With Sustained Casing Pressure, Efecan Demirci, Andrew Wojtanowicz

Faculty Publications

Sustained Casing Pressure (SCP) is the persistent casinghead pressure resulting from the well’s annular integrity loss and migration of gas above the leaking cement sheath. Downhole—intervention methods for SCP removal employ workover rigs to access and plug off the leaking annulus at depth from within the well. The inexpensive rig-less method of Buoyant Kill involves surface injection of immiscible heavy fluid at the casinghead into the well’s annulus to replace the annular fluid column above the gas-leaking cement and stop gas migration. Laboratory and pilot-size testing have shown feasibility of the method. Presented here, is a field-scale demonstration experiment conducted …

Lighting Energy Load Prediction Framework Using Agent-Based Simulation And Artificial Neural Network Models, Sorena Vosoughkhosravi, Seddigheh Norouziasl, Amirhosein Jafari

Faculty Publications

Lighting is responsible for 17% of the total electricity consumption in commercial buildings in the United States. Investigating the lighting energy load provides the potential for more energy-saving in commercial buildings. Nonetheless, the development of lighting load prediction models has received limited attention in extant literature. This study proposes a framework to predict the lighting schedule and load in office buildings by integrating an agent-based model into an artificial neural network model. A small office building is used as a case study to simulate lighting load based on occupancy information using an agent-based model. Then, an artificial neural network model …

The Impact Of Exchange Rate Volatility On International Trade: Evidence From China, Marwa Said Anis Dr., Aya Afify

Business Administration

This paper proposes helpful insights regarding the impact of the exchange rate volatility on international trade.  The focus has been on China using a monthly data from the period of January 2003 to August 2018. This is mainly an attempt to contribute to the ongoing debates about this relationship. Time series analysis is adopted specifically; stationary test, granger-causality test, co-integration and error correlation model and finally the residual test. Results indicate that there is a co-integration relationship among the variables. The error correlation model has shown that both the exchange rate and inflation have a significant negative impact on imports. …

In Search Of Pandora Experimentia, Brian Hauser

Faculty Contributions to Books

Wes Craven's first film was a 45-minute color 16mm student film titled Pandora Experimentia, for which Craven served as director of photography when he was a faculty member at Clarkson College of Technology in 1968. This essay tells the story of the making and exhibition of this early Craven film before he left teaching to pursue a successful career in filmmaking.

Statistical Tolerance Regions For Flexible Modeling Paradigms, Yafan Guo

Theses and Dissertations--Statistics

Tolerance intervals in a regression setting allow the user to quantify, with a specified degree of confidence, bounds for a specified proportion of the sampled population when conditioned on a set of covariate values. While methods are available for tolerance intervals in fully-parametric regression settings, the construction of tolerance intervals for semiparametric regression models has been treated in a limited capacity. The first project fills this gap and develops likelihood-based approaches for the construction of pointwise one-sided and two-sided tolerance intervals for semiparametric regression models. A numerical approach is also presented for constructing simultaneous tolerance intervals. An appealing facet of …

Selective Melt Recrystallization Of Acetaminophen Polymorphs Through Environmental Control, Eleanor Lowe

Honors Theses

Polymorphism is the ability for a molecule to crystallize into multiple different structures in the solid state. The preparation of one polymorph over another is practically important to pharmaceutical development, as properties of polymorphs can vary and impact the drug delivery method. Polymorph outcomes depend heavily on the environment in which the crystal is nucleated, or initially formed. Acetaminophen, the active ingredient in Tylenol, is one example of a polymorphic compound. Here we use acetaminophen as a model system to better understand primary factors controlling polymorph selection and interconversion. We hypothesize a specific atmospheric environmental factor plays large role in …

Long-Range And Chaotic Active Mixing Of Swimming Microbes In A Vortex Chain Flow, Nghia Le

Honors Theses

We present experiments studying the motion and active mixing of swimming mi- crobes in laminar, vortex-dominated fluid flows. We are testing a theory that predicts the existence of swimming invariant manifolds (SwIMs) - invisible, one-way barriers blocking the paths of self-propelled tracers in the flow in one direction. We also pro- pose that the SwIMs together can form chute structures in three-dimensional phase space that facilitate cross-vortex transport of the microbes. We also observe evidence of how these structures promote long-range transport at different non-dimensional velocities (microbe’s velocity relative to flow velocity). Long-range transport is quan- tified by measuring the …

An Equivalence Checking Framework For Agile Hardware Design, Yanzhao Wang, Fei Xie, Zhenkun Yang, Pascuale Cocchini, Jin Yang

Computer Science Faculty Publications and Presentations

Agile hardware design enables designers to produce new design iterations efficiently. Equivalence checking is critical in ensuring that a new design iteration conforms to its specification. In this paper, we introduce an equivalence checking framework for hardware designs represented in HalideIR. HalideIR is a popular intermediate representation in software domains such as deep learning and image processing, and it is increasingly utilized in agile hardware design.We have developed a fully automatic equivalence checking workflow seamlessly integrated with HalideIR and several optimizations that leverage the incremental nature of agile hardware design to scale equivalence checking. Evaluations of two deep learning accelerator …

Upep 2023 Overview, Jessica Schad, Elizabeth Brunner

Utah People and Environment Poll (UPEP)

Utah's people and environment are currently experiencing significant changes as the population continues to grow, droughts and flooding pose threats to agriculture, air quality leads to health concerns, energy needs rise, and public lands see increased use. Action is needed to address these changes, especially given how rapidly they are occurring. Political leaders, environmental organizations, Tribal Nations, and universities play a critical role in ensuring Utah’s environment, economy, workforce, and underserved communities have a sustainable path forward. Understanding residents’ views, values, and concerns can help better craft the policy, inform infrastructure, and identify the services needed to do so. With …

The Role Of Preprocessing For Word Representation Learning In Affective Tasks, Nastaran Babanejad, Heidar Davoudi, Ameeta Agrawal, Manos Papagelis

Computer Science Faculty Publications and Presentations

Affective tasks, including sentiment analysis, emotion classification, and sarcasm detection have drawn a lot of attention in recent years due to a broad range of useful applications in various domains. The main goal of affect detection tasks is to recognize states such as mood, sentiment, and emotions from textual data (e.g., news articles or product reviews). Despite the importance of utilizing preprocessing steps in different stages (i.e., word representation learning and building a classification model) of affect detection tasks, this topic has not been studied well. To that end, we explore whether applying various preprocessing methods (stemming, lemmatization, stopword removal, …

An Improved Lower Bound For Sparse Reconstruction From Subsampled Walsh Matrices, Jaroslaw Blasiok, Patrick Lopatto, Kyle Luh, Jake Marcinek, Shravas Rao

Computer Science Faculty Publications and Presentations

We give a short argument that yields a new lower bound on the number of uniformly and independently subsampled rows from a bounded, orthonormal matrix necessary to form a matrix with the restricted isometry property. We show that a matrix formed by uniformly and independently subsampling rows of an N ×N Walsh matrix contains a K-sparse vector in the kernel, unless the number of subsampled rows is Ω(KlogKlog(N/K)) — our lower bound applies whenever min(K,N/K) > logC N. Containing a sparse vector in the kernel precludes not only the restricted isometry property, but more generally the application of those matrices for …

Three-Port Bi-Directional Dc–Dc Converter With Solar Pv System Fed Bldc Motor Drive Using Fpga, Arun Kumar Udayakumar, Raghavendra Rajan Vijaya Raghavan, Mohamad Abou Houran, Rajvikram Madurai Elavarasan, Anushkannan Nedumaran Kalavathy, Eklas Hossain

Electrical and Computer Engineering Faculty Publications and Presentations

The increased need for renewable energy systems to generate power, store energy, and connect energy storage devices with applications has become a major challenge. Energy storage using batteries is most appropriate for energy sources like solar, wind, etc. A non-isolated three-port DC–DC-converter energy conversion unit is implemented feeding the brushless DCmotor drive. In this paper, a non-isolated three-port converter is designed and simulated for battery energy storage, interfaced with an output drive. Based on the requirements, the power extracted from the solar panel during the daytime is used to charge the batteries through the three-port converter. The proposed three-port converter …

Higher-Order Cumulants And Correlation Functions Of Proton Multiplicity Distributions In √Snn = 3 Gev Au+Au Collisions At The Rhic Star Experiment, The Star Collaboration

Physics and Astronomy Faculty Publications

We report a measurement of cumulants and correlation functions of event-by-event proton multiplicity distributions from fixed-target Au+Au collisions at √sNN = 3 GeV measured by the STAR experiment. Protons are identified within the rapidity (y) and transverse momentum (pT ) region −0.9 < y < 0 and 0.4 < pT < 2.0 GeV/c in the center-of-mass frame. A systematic analysis of the proton cumulants and correlation functions up to sixth order as well as the corresponding ratios as a function of the collision centrality, pT , and y are presented. The effect of pileup and initial volume fluctuations on these observables and the respective corrections are discussed in detail. The results are compared to calculations from the hadronic transport UrQMD model as well as a hydrodynamic model. In the most central 5% collisions, the value of proton cumulant ratio C4/C2 is negative, drastically different from the values observed in Au+Au collisions at higher energies. Compared to model calculations including lattice QCD, a hadronic transport model, and a hydrodynamic model, the strong suppression in the ratio of C4/C2 at 3 GeV Au+Au collisions indicates an energy regime dominated by hadronic interactions.

Teen Appeal, Memphis, 12.08, 209

Documents

Issue 12.8 of the "Teen Appeal" published by the University of Memphis Journalism Department and Commercial Appeal, Memphis, Tennessee, on May 5, 2009.

Teen Appeal, Memphis, 04.04, 2000

Documents

Issue 4.4 of the “Teen Appeal” published by the University of Memphis Journalism Department and Commercial Appeal, Memphis, Tennessee, on December 5, 2000.

Dynamic Luminescence Of Lead Doped Calcium Zinc Germanate For Anti-Counterfeiting, Levi Spencer

Dissertations and Theses

As counterfeited goods appear in the consumer market through various trade routes, unsuspecting buyers are left with products that are potentially dangerous and in poor quality. Products intended for the automotive and aerospace industry are often counterfeited due to their easy market accessibility. Once these products make their way into the supply chain, it leaves the end users with a significant risk due to voided warranties and inferior product quality and design. Therefore, advanced anti-counterfeiting measures need to be developed to assure the products are genuine, as well as allow the end users to authenticate the product. Luminescent materials have …

Enforcement Penalties At The Itc, Andrea R. Hugill, John C. Jarosz, Katherine D. Cappaert

Northwestern Journal of International Law & Business

The U.S. International Trade Commission (“ITC” or “Commission”) has grown in importance as a venue for U.S. companies to pursue intellectual property (“IP”) violators and to block the sale or importation of goods from overseas that infringe U.S. IP rights. Once a violation of the Section 337 of the Tariff Act of 1930 is found, an order halting further infringement, including importation, is almost always entered. In theory, potentially sizeable penalties may be imposed on entities that do not comply with the terms of an import restriction. In practice, the terms of an import restriction are almost always honored, but …

Leveling The Playing Field: How To Get International Student-Athletes Paid Under Name, Image And Likeness, Justin Auh

Northwestern Journal of International Law & Business

No abstract provided.

Forecasting Remission Time Of A Treatment Method For Leukemia As An Application To Statistical Inference Approach, Ahmed Galal Atia, Mahmoud Mansour, Rashad Mohamed El-Sagheer, B. S. El-Desouky

Basic Science Engineering

In this paper, Weibull-Linear Exponential distribution (WLED) has been investigated whether being it is a well-fit distribution to a clinical real data. These data represent the duration of remission achieved by a certain drug used in the treatment of leukemia for a group of patients. The statistical inference approach is used to estimate the parameters of the WLED through the set of the fitted data. The estimated parameters are utilized to evaluate the survival and hazard functions and hence assessing the treatment method through forecasting the duration of remission times of patients. A two-sample prediction approach has been applied to …

Gamma Attenuation And Mechanical Characteristics Of A Lead/Nbr/Sbr Rubber Composite With Black Nanocarbon Reinforcement, Elsayed Salama, Romisaa Gamal, Hassan Elshimy, Doaa E. El-Nashar, Assem Bakry, Mohamed Ehab

Basic Science Engineering

In this work, black nanocarbon-loaded 0–100 parts-per-hundred (phr) PbO-filled acrylonitrile butadiene rubber (NBR)/styrene-butadiene rubber (SBR) blend composites were prepared by using an ordinary standard rubber mixer. Both mechanical and gamma attenuation properties of the prepared samples were investigated. Maximum tensile strength and elongation at break were obtained at 40 phr PbO concentration. The obtained values for the mass attenuation coefficient with the increased PbO concentration from 0–100 phr ranged from 0.12–0.22 cm2/g at 0.239 MeV. Scanning electron microscope (SEM) with the elemental mapping analysis results showed high homogeneity at 40 phr of the prepared rubber composites, with some areas of …

Refining The Use Of Stable Isotope Analysis In Detecting Wildlife Laundering, Kevin Guilfoyle

Electronic Theses and Dissertations, 2020-2023

The international wildlife trade has caused significant declines in wild populations. Captive breeding can reduce the pressure on wild populations caused by overcollection, but if not properly monitored, wildlife laundering can lead to further population declines. Improving the forensic ability to detect wildlife laundering will assist in monitoring the wildlife trade and enforcing regulations, thereby aiding recovery of wild populations. Stable isotope analysis has grown in importance as a forensic tool, but improvements are needed. Here, stable isotope analysis (δ13C) on eggshells of captive bred and wild sourced island apple snails (Pomacea maculata) distinguished between the two; eggshells of captive …