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Removal Of Permethrin And Bifenthrin Insecticides From Runoff Water By Activated Carbon Adsorption, Ernesto Hernandez

UNLV Theses, Dissertations, Professional Papers, and Capstones

Among the hundreds of pesticides and insecticides, pyrethroids-particularly permethrin and bifenthrin, have become very popular due to their high toxicity to insects and low toxicity to humans, leading to extensive use in both agriculture and urban areas. Pyrethroids have no discharge limits because of this, leading to a negative impact on surrounding ecosystems due to their high toxicity to fish and aquatic life. Due to their low solubility and long half-lives, they are prominent in the environment long after application with a high potential for getting transported in runoff water to nearby water bodies. In this study, DSR-C reactivated carbon …

Clinical Variables Influencing The Severity Of Diabetes Ketoacidosis, Yara F. Alhamdani, Lojain O. Almadfaa, Abdulmoein E. Alagha

Saudi Medical Journal

Objectives: To evaluate clinical indicators in order to examine the intensity of diabetes ketoacidosis (DKA) episodes in children and adolescents diagnosed with type 1 diabetes mellitus (T1DM). Methods: Data from 156 T1DM patients aged 6 months to 14 years, who presented with DKA to the emergency room, were retrospectively reviewed from 2018 to 2022. Data on demographic characteristics, economic status, initial clinical presentation, glycemic control, DKA severity, and laboratory evaluations were also collected. Results: Diabetes ketoacidosis episodes were more prevalent among male patients during the middle childhood age group. Notably, these episodes displayed seasonal patterns. The severity was found to …

Molecular Epidemiology And Molecular Typing Methods Of Acinetobacter Baumannii: An Updated Review, Razique Anwer

Saudi Medical Journal

The aim of this study was to go through the molecular methods used for typing of carbapenem-resistant Acientobacter baumannii (CRAB) isolates for investigating the molecular epidemiology all over the world. Multiple typing techniques are required to understand the source and nature of outbreaks caused by Acientobacter baumannii ( A. baumannii ) and acquired resistance to antimicrobials. Nowadays, there is gradual shift from traditional typing methods to modern molecular methods to study molecular epidemiology and infection control. Molecular typing of A. baumannii strains has been revolutionized significantly in the last 2 decades. A few sequencing-based techniques have been proven as a …

Deterministic Global 3d Fractal Cloud Model For Synthetic Scene Generation, Aaron M. Schinder, Shannon R. Young, Bryan J. Steward, Michael L. Dexter, Andrew Kondrath, Stephen Hinton, Ricardo Davila

Faculty Publications

This paper describes the creation of a fast, deterministic, 3D fractal cloud renderer for the AFIT Sensor and Scene Emulation Tool (ASSET). The renderer generates 3D clouds by ray marching through a volume and sampling the level-set of a fractal function. The fractal function is distorted by a displacement map, which is generated using horizontal wind data from a Global Forecast System (GFS) weather file. The vertical windspeed and relative humidity are used to mask the creation of clouds to match realistic large-scale weather patterns over the Earth. Small-scale detail is provided by the fractal functions which are tuned to …

Development, Modeling, Identification, And Control Of Tilt-Rotor Evtol Aircraft, Clayton T. Spencer

All Graduate Theses and Dissertations, Fall 2023 to Present

This thesis includes the development, modeling, identification, and control of an electric-Vertical-Take-Off-and-Landing (eVTOL) aircraft with tiltable rotors. The front two rotors have tilting capability for transition flight from vertical-take-off to forward-level flight. This work details the development of an eVTOL aircraft and the selection of sub components such as electric motors, batteries, and controllers. After the aircraft build, mathematical model is derived to describe the motion of the aircraft. Unknown parameters in the mathematical model are identified using a Least-Squares-regression (LSR) method that can handle parameter constraints. This is done using real flight data collected from the aircraft. Lastly, this …

Generative Interpretation, Yonathan A. Arbel, David A. Hoffman

Articles

We introduce generative interpretation, a new approach to estimating contractual meaning using large language models. As AI triumphalism is the order of the day, we proceed by way of grounded case studies, each illustrating the capabilities of these novel tools in distinct ways. Taking well-known contracts opinions, and sourcing the actual agreements that they adjudicated, we show that AI models can help factfinders ascertain ordinary meaning in context, quantify ambiguity, and fill gaps in parties' agreements. We also illustrate how models can calculate the probative value of individual pieces of extrinsic evidence.

After offering best practices for the use of …

Authoritarian Privacy, Mark Jia

Georgetown Law Faculty Publications and Other Works

Privacy laws are traditionally associated with democracy. Yet autocracies increasingly have them. Why do governments that repress their citizens also protect their privacy? This Article answers this question through a study of China. China is a leading autocracy and the architect of a massive surveillance state. But China is also a major player in data protection, having enacted and enforced a number of laws on information privacy. To explain how this came to be, the Article first turns to several top-down objectives often said to motivate China’s privacy laws: advancing its digital economy, expanding its global influence, and protecting its …

Examining The Relationship Between Politics And The Economy, Evan Pals

Honors College Theses

The purpose of this project is to quantify the relationship between the US political environment and the American economy. First, impacts of U.S. presidential elections on the American economy are analyzed. The project will analyze the time effects of elections on multiple economic indicators. Average returns on the following investments will be observed: Dow Jones Industrial Average, S&P 500, gold, and silver. Additionally, the price of crude oil and the consumer price index will be studied. Time dummy variables will then be incorporated to show whether an election took place within the given time period, splitting the data into two …

Revealing The Three-Dimensional Arrangement Of Polar Topology In Nanoparticles, Chaewa Jeong, Juhyeok Lee, Hyesung Jo, Jaewhan Oh, Hionsuck Baik, Kyoung-June Go, Junwoo Son, Si-Young Choi, Sergey Prosandeev, Laurent Bellaiche, Yongsoo Yang

Physics Faculty Publications and Presentations

In the early 2000s, low dimensional ferroelectric systems were predicted to have topologically nontrivial polar structures, such as vortices or skyrmions, depending on mechanical or electrical boundary conditions. A few variants of these structures have been experimentally observed in thin film model systems, where they are engineered by balancing electrostatic charge and elastic distortion energies. However, the measurement and classification of topological textures for general ferroelectric nanostructures have remained elusive, as it requires mapping the local polarization at the atomic scale in three dimensions. Here we unveil topological polar structures in ferroelectric BaTiO₃ nanoparticles via atomic electron tomography, which …

The Constitution As Symbol Or Operating Manual: A Rejoinder On Constitutional Literacy, Brian Christopher Jones, De Maartje Visser

Research Collection Yong Pung How School Of Law

Assessing constitutional functionality often brings forward questions that go to the heart of the constitutional project, and this is certainly the case with constitutional literacy. After all, constitutions serve as national symbols and in a related vein, some have even likened them to a country’s autobiography. As Mounk points out, constitutional values and civic cultures have at times defined democracies, and many states have used their founding documents as key symbols to produce a shared identity or civic patriotism. At the same time, constitutions will also set out the legal and political structures of, and constraints on, institutions, and as …

Modeling Inflation Transmission Among Different Construction Materials, Mohamad Abdul Nabi, Islam H. El-Adaway, Rayan H. Assaad

Civil, Architectural and Environmental Engineering Faculty Research & Creative Works

Cost estimating in the construction industry is challenging due to the high uncertainty associated with the supply chain, especially after the COVID-19 pandemic. Some research studies have addressed such problems by developing models that predict material cost. In fact, all material can be interconnected and interrelated with lead-lag relationships such that any inflation in one material's price can be associated with inflation in other materials' prices, referred to as transmission of inflation. Despite the latter, none of the existing studies have investigated inflation transmission among all construction materials. This paper fills this knowledge gap. The authors used a multistep research …

Survival After Ditching In Motorized Aircraft, 1989-2022, Douglas D. Boyd, Volker C. Schick, Catherina Hippler, Jochen Hinkelbein

Publications

INTRODUCTION: Although an unintended aircraft landing on water (referred to as ditching) is a rare event, the potential for occupant injury/fatality increases immediately following the event due to adverse conditions. However, to date, few studies have addressed the subject. Herein, ditching events and post-ditching survival were investigated.

METHODS: Ditchings (1982–2022) in the United States were identified from the National Transportation Safety Board database. Occupant injury severity, aircraft type, pilot experience, flight conditions, and number of occupants were extracted. Poisson distribution, the Chi-squared test (2-tailed), Mann-Whitney U test, and Kruskal-Wallis one-way analysis of variance were employed.

RESULTS: A total of 96 …

The Employment Of Resuscitative Endovascular Balloon Occlusion Of The Aorta In Deployed Settings, Branson D. Taheri, Andrew D. Fisher, Ian F. Eisenhauer, Michael D. April, Julie A. Rizzo, Sundeep S. Guliani, Kathleen M. Flarity, Michael Cripps, Vikhyat S. Bebarta, Max V. Wohlauer, Steven G. Schauer

Faculty Publications

Excerpt: We identified 17 cases of REBOA placed in combat settings from 2017 to 2019. The majority of these were placed in the operating room (76%) and in civilian patients (70%).

Understanding Practitioner’S Perceptions Of Speech And Language Therapy Services In The Juvenile Justice System, Julia Buendgen

Dissertations, Theses, and Projects

The purpose of this study was to gain more understanding of how individuals who work with the juvenile justice population understand language disorders and the scope of speech and language therapy services. In addition, this study explored potential supports for individuals working in this setting. This study consisted of twenty participants working in the juvenile justice system who completed a survey tool that was designed by the researcher to describe the participant's perceptions of speech-language pathology, current procedures, reported challenges, and potential areas in need of support. Participant knowledge of the scope of speech-language pathology varied among participants. The highest …

Delta Like 4 Regulates Cerebrovascular Development And Endothelial Integrity Via Dll4-Notch-Cldn5 Pathway And Is Vulnerable To Neonatal Hyperoxia., Xingrao Ke, Sheng Xia, Wei Yu, Sherry M. Mabry, Qi Fu, Heather Menden, Venkatesh Sampath, Robert H. Lane

Manuscripts, Articles, Book Chapters and Other Papers

The mechanisms governing brain vascularization during development remain poorly understood. A key regulator of developmental vascularization is delta like 4 (DLL4), a Notch ligand prominently expressed in endothelial cells (EC). Exposure to hyperoxia in premature infants can disrupt the development and functions of cerebral blood vessels and lead to long-term cognitive impairment. However, its role in cerebral vascular development and the impact of postnatal hyperoxia on DLL4 expression in mouse brain EC have not been explored. We determined the DLL4 expression pattern and its downstream signalling gene expression in brain EC using Dll4^+/+ and Dll4^+/LacZ mice. We also …

Unraveling The Physics Of Quasar Jets Using Hst Polarimetry, Devon Clautice

Theses and Dissertations

We present a multiwavelength study of three high-power FR II (quasar) jets -- 3C 273, PKS 0637-752, and 1150+497 -- with an emphasis on new high-quality Hubble Space Telescope (HST) optical polarimetry and Chandra X-ray Observatory imaging. Relativistic jets from active galactic nuclei transport energy and mass from the supermassive black hole’s accretion region out to Megaparsec-scale lobes, with effects that feedback into galaxy formation and cluster energetics. We build on recent work which has called into question our fundamental understanding of FR II jet physics, and suggest that highly-efficient particle acceleration must be taking place in situ …

Test And Evaluation Model For Midwater Docking Of Autonomous Underwater Vehicles, Parker Baillon

Theses and Dissertations

This research created a Test and Evaluation (T&E) model for midwater Autonomous Underwater Vehicle (AUV) capture. The creation of this model will allow for a better assessment of the feasibility of midwater AUV capture. To achieve this, the T&E model was exposed to various flow conditions to assess stability. Capturing an AUV in midwater, the area below the wave-affected zone to the sea floor, has many benefits for an AUV and its mission. AUVs basing missions from a midwater dock will not be affected by wave motions. A midwater dock can be transported to any mission site and deployed with …

Investigating The Relationship Between Metacognition, Motivation, Self-Regulation Strategy Usage, And Physical Activity Participation, Kay Sharon Stanfield

Theses and Dissertations

There are numerous benefits associated with physical activity. Unfortunately, few people participate in enough daily activity to reap the rewards. Health professionals have explored ways to promote adherence to physical activity and healthy behavior. Evidence shows self-regulation to be a determinant of physical activity. This study investigated the relationship between self-regulation strategy usage and levels of physical activity participation. Additionally, the study examined how motivation (through the perspective of Self-Determination theory) impacts physical activity. Six behavior regulation styles correspond to the degree of motivation (from low to high) on the Self-Determination continuum. A comparison of behavior regulation styles to physical …

Improving Pitch Recognition By Fading Visual Prompts, Joshua Lawrence Ford

Theses and Dissertations

Behavioral Science and Applied Behavior Analysis (ABA) provides tools and technologies that can be used by players, coaches, and researchers to enhance the traditional training for student athletes. The current study was designed to examine whether stimulus prompts would facilitate collegiate baseball player’s accuracy of pitch identification for three pitches. A secondary measure was to decrease the latency from the launch of a pitch to identification of the pitch. Decreases in the latency of a hitter recognizing a pitch and increases in pitch recognition accuracy were noted using visual analysis. Stimulus fading showed mixed results across participants. Future directions and …

Artificial Neural Networks As The Solution Of Inverse Heat Conduction Problems In Multidimensional Domains, Andrea Carolina Martinez Mundarain

Theses and Dissertations

Surface heat flux measurement is essential in various industrial applications including atmospheric entry of space vehicles, machining processes, non-destructive testing and more. While direct measurement of surface heat flux is known to be a very difficult, if not infeasible, task, acquiring temperature measurement from sub- surface locations are often viable. The problem of evaluating the surface heat flux using internal temperature measurements is known as an inverse heat conduction problem (IHCP). IHCPs are considered as mathematically ill-posed as they are highly sensitive to measurement error. This research presents a solution based on the implementation of artificial neural networks (ANNs) to …

High Intraspecific Diversity Of Pocillopora Damicornis In Southeast Asia Reflects Adaptive Potential To Climate Change, Maria Lucille Carr

Theses and Dissertations

Marine heatwaves are increasing in intensity and frequency because of increased emissions of greenhouse gases. On coral reefs, warmer temperatures cause coral bleaching, mortality, and shifts in benthic composition. However, coral bleaching responses and survival vary geographically. Several hypotheses may explain such geographical differences in thermal tolerance, including the possibility that some localities may support higher intraspecific diversity than other localities, increasing the likelihood of survival of some individuals through heatwaves. Here we assessed geographic patterns of intraspecific genetic diversity in the ubiquitous coral Pocillopora damicornis. Intraspecific genetic diversity was assessed for 428 sequences across 44 sites in the Pacific …

Representation Learning For Generative Models With Applications To Healthcare, Astronautics, And Aviation, Van Minh Nguyen

Theses and Dissertations

This dissertation explores applications of representation learning and generative models to challenges in healthcare, astronautics, and aviation.

The first part investigates the use of Generative Adversarial Networks (GANs) to synthesize realistic electronic health record (EHR) data. An initial attempt at training a GAN on the MIMIC-IV dataset encountered stability and convergence issues, motivating a deeper study of 1-Lipschitz regularization techniques for Auxiliary Classifier GANs (AC-GANs). An extensive ablation study on the CIFAR-10 dataset found that Spectral Normalization is key for AC-GAN stability and performance, while Weight Clipping fails to converge without Spectral Normalization. Analysis of the training dynamics provided further …

Comparing And Assessing Four Ai Chatbots' Competence In Economics, Patrik T. Hultberg, David Santandreu Calonge, Firuz Kamalov, Linda Smail

All Works

Artificial Intelligence (AI) chatbots have emerged as powerful tools in modern academic endeavors, presenting both opportunities and challenges in the learning landscape. They can provide content information and analysis across most academic disciplines, but significant differences exist in terms of response accuracy for conclusions and explanations, as well as word counts. This study explores four distinct AI chatbots, GPT-3.5, GPT-4, Bard, and LLaMA 2, for accuracy of conclusions and quality of explanations in the context of university-level economics. Leveraging Bloom’s taxonomy of cognitive learning complexity as a guiding framework, the study confronts the four AI chatbots with a standard test …

Vitamin D Regulates Covid-19 Associated Severity By Suppressing The Nlrp3 Inflammasome Pathway, Bariaa Khalil, Narjes Saheb Sharif-Askari, Shirin Hafezi, Fatemeh Saheb Sharif-Askari, Fatme Al Anouti, Qutayba Hamid, Rabih Halwani

All Works

Background The role of vitamin D3 (VitD3) in modulating innate and adaptive immunity has been reported in different disease contexts. Since the start of the coronavirus disease-2019 (COVID-19) pandemic, the role of VitD3 has been highlighted in many correlational and observational studies. However, the exact mechanisms of action are not well identified. One of the mechanisms via which VitD3 modulates innate immunity is by regulating the NLRP3-inflammasome pathway, being a main underlying cause of SARS-CoV-2-induced hyperinflammation. Aims and main methods Blood specimens of severe COVID-19 patients with or without VitD3 treatment were collected during their stay in the intensive care …

Are Research Studies Too Boring?: Incorporating Gamification Elements In Mental Rotation For Children., Samantha Zakrzewski

Theses, Dissertations and Culminating Projects

Many cognitive tasks are perceived as boring by children due to their redundancy, lengthy trials, and required cognitive effort. Children’s performance on these tasks might therefore be hampered, not by a lack of cognitive ability, but rather by a lack of motivation to complete these tasks. Mental rotation, a type of cognitive task, has been extensively studied, due to its prevalence in daily living, in activities such as loading a dishwasher or packing a car, and its relation to STEM success. However, similar to other cognitive tasks, mental rotation tasks often result in fatigue and boredom in children. Hence, the …

Bathsheba And Sue: Hardy's Independent Heroines, Alexandra Acosta

Theses, Dissertations and Culminating Projects

In Thomas Hardy's literary landscape, the female protagonists Bathsheba Everdene and Sue Bridehead emerge as complex figures who challenge and navigate the rigid social norms of Victorian society. Through their journeys in Far from the Madding Crowd and Jude the Obscure, respectively, Hardy explores the themes of independence, conformity, and the impact of societal pressures on individual agency.

Bathsheba Everdene, in Far from the Madding Crowd, initially stands as a symbol of independence, defying the conventional gender roles expected of Victorian women. However, her trajectory reveals the nuanced ways in which societal expectations shape her choices, ultimately leading her to …

Exploration Of Resources Women Use To Seek Food And Nutrition Information During Pregnancy, Sydni Hebert

Theses, Dissertations and Culminating Projects

Nutrition is a common concern during pregnancy, yet women often do not meet the recommended nutrient intakes for a healthy pregnancy. Obtaining reliable food and nutrition information is challenging during pregnancy, and women do not know where to find credible information. AIMS: This study aims to investigate the food and nutrition information-seeking behaviors among low-income pregnant women experiencing their first pregnancy and compare these behaviors with pregnant women who are classified as middle and higher-income status. METHODS: A qualitative survey was developed to identify the type of information women seek, satisfaction with information, application of information to their diet choices, …

Data Recovery Beyond The Obvious Using Digital Forensic Techniques, Smit Chandrakant Nayak

Theses, Dissertations and Culminating Projects

Advancement in drone technology, particularly for smaller drones, are creating new research fields and potential applications, particularly with regard to smaller drones. On the other hand, these enhancements bring forth additional hurdles in terms of adaptability, homogeneity, and safety. The purpose of this study is to investigate the science and technology behind drones, as well as their applications, the many ways in which citizens implement them, and the risks, precautions, and privacy problems that are associated with their utilization. This article discusses the existing literature, as well as the available solutions for drone cybersecurity, the security challenges related with drones …

Reparative Justice As Literary Methodology: Confronting Criminality In Contemporary American Fiction, Diane Paulson

Theses, Dissertations and Culminating Projects

This thesis presents an approach to literary analysis centered on dismantling one’s conscious or unconscious biases by engaging in reparative justice practices with fictional characters. It stems from the belief that America’s criminal justice system is a white patriarchal system that serves to support and uplift systems of white power. I argue that we must advocate for its abolition with a wide lens. Doing so requires a recognition of one’s biases and a radical shift in empathy to those who have directly and indirectly survived and continue to survive oppression by the criminal justice system. I argue conducting reparative readings …

Symptoms And Displacements: Satan's Detachments In Paradise Lost, Rosemary Rodriguez

Theses, Dissertations and Culminating Projects

For my thesis I aim to examine the detachment that Satan has to his surroundings in John Milton’s epic poem Paradise Lost. Predominantly using psychoanalysis and Marxist theory as my main lenses for analysis, I intend to show the full extent of Satan's punishment and condemnation in the text. A standard close reading of this work shows how flawed and inconsistent Satan is in his disposition and beliefs. From boasting about being able to make a heaven of hell to considering asking God for forgiveness, the text shows him constantly changing. In other words, Satan's mental instability manifests itself in …