Digital Commons Network^™

Scalable Real-Time Rendering For Extremely Complex 3d Environments Using Multiple Gpus, Yangzi Dong

Theses

In 3D visualization, real-time rendering of high-quality meshes in complex 3D environments is still one of the major challenges in computer graphics. New data acquisition techniques like 3D modeling and scanning have drastically increased the requirement for more complex models and the demand for higher display resolutions in recent years. Most of the existing acceleration techniques using a single GPU for rendering suffer from the limited GPU memory budget, the time-consuming sequential executions, and the finite display resolution. Recently, people have started building commodity workstations with multiple GPUs and multiple displays. As a result, more GPU memory is available across …

Engram, An Application Of Recording And Throwing Back Memories With Your Parents, Tong Wu

Theses

Adults can recall memories from the age of three. Our brains help us sort out important things for long-term memory and more trivial things for short-term memory. 1 We pull up these pieces of memory when we need them. We can remember a lot, but we also keep forgetting, forgetting details.

Therefore, humans have always had the habit of recording. Today we record our lives by posting in social media, taking photos, and so on. In most of the more modern methods, we record our life initiatively, which means we need to do something to record a piece of memory. …

Roll Back, A User Experience Design To Help People Recall Memories, Haotian Sun

Theses

This article introduces a user experience design of recalling memories. People take numerous photos in their whole lives, so they need a powerful tool to help them organize and review all those pictures in an interesting way. After having interviews with target users, most of them have problems with organizing massive digital photos. This process costs them a lot of time and makes them feel boring. In this article, a mobile app named “Roll Back” is designed to solve this problem, users can review their memories randomly by solving a simplified Rubik’s Cube game, their photos will display on the …

Magnetic Resonance Guided Radiotherapy For Rectal Cancer: Expanding Opportunities For Non-Operative Management, Michael Chuong

All Publications

Colorectal cancer is the third most common cancer in men and the second most common in women worldwide, and the incidence is increasing among younger patients. 30% of these malignancies arise in the rectum. Patients with rectal cancer have historically been managed with preoperative radiation, followed by radical surgery, and adjuvant chemotherapy, with permanent colostomies in up to 20% of patients. Beginning in the early 2000s, non-operative management (NOM) of rectal cancer emerged as a viable alternative to radical surgery in select patients. Efforts have been ongoing to optimize neoadjuvant therapy for rectal cancer, thereby increasing the number of patients …

Co-Embedding Attributed Networks With External Knowledge, Pei-Chi Lo, Ee-Peng Lim

Research Collection School Of Computing and Information Systems

Attributed network embedding aims to learn representations of nodes and their attributes in a low-dimensional space that preserves their semantics. The existing embedding models, however, consider node connectivity and node attributes only while ignoring external knowledge that can enhance node representations for downstream applications. In this paper, we propose a set of new VAE-based embedding models called External Knowledge-Aware Co-Embedding Attributed Network (ECAN) Embeddings to incorporate associations among attributes from relevant external knowledge. Such external knowledge can be extracted from text corpus and knowledge graphs. We use multi-VAE structures to model the attribute associations. To cope with joint encoding of …

Great Expectations: What Does It Mean To Hold And Make Space For The Arts In Singapore?, Su Fern Hoe

Research Collection School of Social Sciences

The arts and artists need space to thrive. However, as much of the land in Singapore is stateowned, providing space for the arts—literally and figuratively—remains challenging. Today, there is a rich variety of arts infrastructure in Singapore, including performing arts venues, statesubsidised artist studios and co-working spaces for freelancers. However, this stateadministered infrastructure comes with expectations, as these arts spaces have been positioned as expedient policy resources capable of achieving a broad confluence of cultural, urban, economic and social outcomes for Singapore. These “great expectations” on state-initiated arts spaces and the ensuing implications are the foci of this paper. I …

Antimicrobial Resistance In Typhoidal Salmonella: Surveillance For Enteric Fever In Asia Project, 2016-2019, Farah Naz Qamar, Mohammad Tahir Yousafzai, Irum Fatima Dehraj, Sadia Shakoor, Seema Irfan, Aneeta Hotwani, Muhammad J. Hunzai, Rozina Thobani, Najeeb Rahman, Junaid Mehmood, Ashraf M. Memon

Department of Paediatrics and Child Health

Background: Clinicians have limited therapeutic options for enteric as a result of increasing antimicrobial resistance, and therefore typhoid vaccination is recommended as a preventive measure. As a part of the Surveillance for Enteric Fever in Asia Project (SEAP), we investigated the extent measured the burden of antimicrobial resistance (AMR) among confirmed enteric fever cases in Bangladesh, Nepal, and Pakistan.
Methods: From September 2016-September 2019, SEAP recruited study participants of all age groups from its outpatient, inpatient, hospital laboratory, laboratory network, and surgical sites who had a diagnosis of febrile illness that was either suspected or blood culture confirmed for enteric …

Oxytocin Attenuates Expression, But Not Acquisition, Of Sucrose Conditioned Place Preference In Rats, Devon Patel, Megana Sundar, Eva Lorenz, Kah-Chung Leong

Psychology Faculty Research

Maladaptation of reward processing for natural rewards, such as sucrose or sugar, may play a role in the development of diseases such as obesity and diabetes. Furthermore, uncovering mechanisms to disrupt or reverse maladaptation of reward-seeking behaviors for natural reinforcers can provide insight into treatment of such diseases, as well as disorders such as addiction. As such, studying the effects of potential pharmacotherapeutics on maladaptive sugar-seeking behavior offers valuable clinical significance. Sucrose conditioned place preference (CPP) paradigms can offer insight into aspects of reward processes as it provides a way to assess acquisition and expression of context-reward associations. The present …

A Bicultural Service Member/Civilian Identity And Motivations-Based Assessment Of Moral Injury In U.S. Military And Veteran Populations From America’S Longest Wars, Jamie Allison Mcnally

Doctoral Dissertations and Projects

Experiences in war are often traumatic in nature. Over the past thirty years, research has resulted in increased understanding of these experiences and the unique trajectory that values-based, as opposed to fear-based, traumas can cause. This study investigates these values-based traumas and the mental health outcomes that may result in a syndrome known as moral injury. The current research examined the relationship between potentially morally injurious event exposure and mental health symptomology. Event exposure was conceptualized both as objective occurrences and as the subjective experience of events, with notable distinctions in significance of outcomes. After attempting to replicate previous research …

Organizational Strategies To Promote Nurse Resilience In The Acute Care Hospital Inpatient Setting: An Integrative Review, Marcia A. Depolo

Doctoral Dissertations and Projects

Nurses practicing in acute care hospital environments are exposed to constant stressors from a variety of sources. Workplace stress can lead to unhealthy coping behaviors, illness, and burnout, with intent to leave the organization or the nursing profession altogether. Resilience-building strategies can be employed to foster coping, improve nurse wellbeing, increase job satisfaction, promote retention, and enhance quality patient outcomes. This integrative review provides a synthesis of scholarly publications on nursing resilience from January 2014 through October 2020. Themes to promote nursing resilience occurred at three levels: personal or individual, unit or group, and organizational. This paper will provide a …

Structural Characterization Of Two Large Icosahedral Dna Viruses And Their Capsid Assembly Mechanisms, Yuejiao Xian

Open Access Theses & Dissertations

In the last three decades, many large DNA viruses were discovered and grouped into a loosely defined clade of Nucleocytoplasmic Large DNA Viruses (NCLDVs). NCLDVs infect a wide range of hosts from single cellular protists to large animals. Recently, these viruses were classified as a new phylum of Nucleocytoviricota under the kingdom of Bamfordvirae. The genomes of these Nucleocytoviricota viruses (NCVs) are remarkedly large and complicated, containing many cellular genes from all three domains of life, which raised intensive debates on their evolutionary origins. Despite being classified in the same phylum, their physical structures vary and can be roughly classified …

Depletion Of Essential Isoprenoids And Er Stress Induction Following Acute Liver-Specific Deletion Of Hmg-Coa Reductase, Marco De Giorgi, Kelsey E Jarrett, Jason C Burton, Alexandria M Doerfler, Ayrea Hurley, Ang Li, Rachel H Hsu, Mia Furgurson, Kalyani R Patel, Jun Han, Christoph H Borchers, William R Lagor

Faculty, Staff and Students Publications

HMG-CoA reductase (Hmgcr) is the rate-limiting enzyme in the mevalonate pathway and is inhibited by statins. In addition to cholesterol, Hmgcr activity is also required for synthesizing nonsterol isoprenoids, such as dolichol, ubiquinone, and farnesylated and geranylgeranylated proteins. Here, we investigated the effects of Hmgcr inhibition on nonsterol isoprenoids in the liver. We have generated new genetic models to acutely delete genes in the mevalonate pathway in the liver using AAV-mediated delivery of Cre-recombinase (AAV-Cre) or CRISPR/Cas9 (AAV-CRISPR). The genetic deletion of Hmgcr by AAV-Cre resulted in extensive hepatocyte apoptosis and compensatory liver regeneration. At the biochemical …

The Effects Of Eating A High Fat Diet On Sensitivity Of Rats To Methamphetamine-Induced Conditioned Place Preference, Kayla Galindo

Open Access Theses & Dissertations

Eating a high fat diet causes several negative health consequences, including dysfunction to dopamine systems. For example, eating a high fat diet enhances sensitivity of rats to methamphetamine-induced locomotor sensitization. However, it is not known if sensitivity to other (i.e., the rewarding) effects of methamphetamine are similarly enhanced in rats eating a high fat diet. Females are more sensitive than males to the behavioral effects of stimulants in general, and therefore might also be particularly vulnerable to the effects of diet on the rewarding effects of stimulant drugs. To test the hypoThesis that eating high fat chow enhances sensitivity of …

Economic Analysis Of Backgrounding Calves, Jayden Gunnell

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The purpose of this thesis is to allow beef producers a better insight into the costs and benefits associated with carrying over fall calves to yearling weight and selling them the following spring. Producers are usually seen as risk-averse when it comes to selling their livestock. (Feuz, Fausti 1995) Cattle producers face several decisions during the year when it comes to calf input costs and the premium to be received for fall calves, with the final decision coming at the last minute, when making the decision to keep or sell calves. Said calves might be sold in the fall or …

Maladaptive, Megan Thomas

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This ceramics MFA thesis presents themes of environmental and emotional transition through metaphorical bird imagery. The artist juxtaposes humans and ravens, who are capable of adapting to changing environments, with songbirds, who are less capable of surviving change. The artist asks viewers to consider the loss of ways of existing in the world that goes hand in hand with loss of biodiversity. Works include sculpture, sculptural and functional vessels, and drawings.

The Potential Of Ivf, Jae Anderson

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

As in-vitro fertilization (IVF) has become more available and more affordable, it has become one of the top breeding technologies in the beef and dairy industry. Intermountain Embryonics of Twin Falls, Idaho has made it an available technology for producers in Idaho and parts of surrounding states. Intermountain Embryonics has struggled to show potential clients the financial potential IVF has to offer. This study shows the revenues, expenses, and risks involved in IVF. This study looks at the comparison of breeding natural service with a bull, artificial insemination, and in-vitro fertilization. The comparison shows that natural service comes with the …

Retaining Ownership Of Calves- Obendorf Farms, Gabrielle Bishop

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Retaining Ownership is when a producer chooses to obtain ownership of their calves until they have reached a finished weight and are ready to be sent to slaughter. Cow-calf producers generally sell their calves at weaning time or within a few months of weaning. Every operation as their own way of doing things and sometimes change is hard to come by. Obendorf Farms wanted to evaluate, at what point in time would it be best to sell their 2020 calf crop? Four different scenarios were analyzed. The first scenario involved no change from previous years which, is selling their calves …

The Economic And Health Impacts Of Community Gardens On Refugee Populations: Cric Garden Case Study, Joseph Montoya

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The purpose of this paper is to examine the economic benefits of community gardens and incubator farms, both of which support the populations they serve from an economic viewpoint as well as socially, and as a benefit to public health and nutrition. The findings were gathered from the large body of research concerning the benefits of community gardens as well as program evaluation responses conducted with gardeners at the Cache Refugee and Immigrant Connection (CRIC) garden in Logan, Utah in 2020. They are also informed by experiences had and lessons learned while working as the garden manager. There is a …

“It’S A Hoax!” A Practical Guide For Understanding And Surviving Weird Internet Phenomena, Camille S. Price

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

This project dives into some of the darkest of online spaces, as I seek to uncover the legends, narratives, and beliefs that encourage and popularize culture surrounding self-harm. Building on the extensive research that has been conducted on folk antagonists born on the internet such as the Slenderman, I will discuss another character named Momo who, according to legend, lead their primarily young followers through a series of self-inflicted, harmful acts, each increasing in severity, with the final act ultimately being the taking of one’s life. Research will examine social media threads, YouTube videos, film/television, and fan fiction to unpack …

Crucial Silence, Amy Howard

Open Access Theses & Dissertations

James Baldwin tells the story of being arrested in Paris for allegedly stealing a single hotel bedsheet. After spending several weeks and Christmas Day in a cold prison cell, Baldwin was brought to trial. As he was acquitted for the petty crime which he did not commit, he heard “great merriment in the courtroom.” Baldwin said, “I was chilled by their merriment even thought it was meant to warm me. It could only remind me of the laughter I had often heard at home, laughter which I had sometimes deliberately elicited. This laughter is the laughter of those who consider …

Wicked Ideas For Wicked Problems: Marine Debris And The Complexity Of Governance, Dawn Helene Driesbach

Graduate Program in International Studies Theses & Dissertations

Myriad challenges regarding earth's common spaces, those unregulated by sovereign state authorities, mount and intensify as resources diminish and competition for commercial, scientific and security advantages increases; the pollution and degradation of those spaces simultaneously expands. Threats to the global commons complicate efforts to achieve international consensus which impedes attempts to develop effective governance. As an example, marine debris is a growing problem and is an existential threat to the global commons.

This dissertation aims to characterize marine debris as a wicked problem and explores the complexity of governance in the global ocean commons by answering two fundamental questions. Under …

Associations Of Cannabis Use Disorder With Cognition, Brain Structure, And Brain Function In African Americans, Marinka M. G. Koenis, Joke Durnez, Amanda Rodrigue, Samuel R. Mathias, Aaron F. Alexander-Bloch, Jennifer Barrett, Gaelle E. Doucet, Sophia Frangou, Joanne E. Curran, John Blangero

School of Medicine Publications

Although previous studies have highlighted associations of cannabis use with cognition and brain morphometry, critical questions remain with regard to the association between cannabis use and brain structural and functional connectivity. In a cross-sectional community sample of 205 African Americans (age 18–70) we tested for associations of cannabis use disorder (CUD, n = 57) with multi-domain cognitive measures and structural, diffusion, and resting state brain-imaging phenotypes. Post hoc model evidence was computed with Bayes factors (BF) and posterior probabilities of association (PPA) to account for multiple testing. General cognitive functioning, verbal intelligence, verbal memory, working memory, and motor speed were …

Lyopreserved Amniotic Membrane Is Cellularly And Clinically Similar To Cryopreserved Construct For Treating Foot Ulcers, Kathryn E. Davis, Amanda L. Killeen, David Farrar, Katherine M. Raspovic, Zachary D. Berriman-Rozen, Matthew Malone, Lawrence A. Lavery

School of Podiatric Medicine Publications

We compared cellular viability between cryopreserved and lyopreserved amniotic membranes and clinical outcomes of the lyopreserved construct in a prospective cohort study of 40 patients with neuropathic foot ulcers. Patients received weekly application of lyopreserved membrane for 12 weeks with standard weekly debridement and offloading. We evaluated the proportion of foot ulcers that closed, time to closure, closure trajectories, and infection during therapy. We used chi-square tests for dichotomous variables and independent t-tests for continuous variables with an alpha of α = .10. Cellular viability was equivalent between cryo- and lyopreserved amniotic tissues. Clinically, 48% of subjects' wounds closed in …

Selection And Propagation Of Pinyon Pine, Kylie M. Lawson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Single-leaf pinyon pines are drought tolerant trees native to the Great Basin. This species is a source of wild-collected, edible pine nuts that are in great demand. With no previous research apparent, this thesis aimed to identify wild trees with high cone production as sources for evaluating grafting onto immature and mature trees. Wild sources of scions were identified from four wild stands and six trees per stand. Counting and analyzing the number of scars left by mature cones along the leader branch provided an estimate for each tree‚Äôs productivity and identified trees with greater productivity within a stand. The …

Nicotine And Alcohol Interactions, Charles C. J. Frye

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Charles C.J. Frye, a graduate student in the Behavior Analysis program at Utah State University, completed this dissertation as part of the requirements of the degree of Doctor of Philosophy in Psychology.

Alcohol and Nicotine are the two most commonly abused drugs in the United States, often used at the same time. The goal of the dissertation was to more fully understand how exposure to one drug alters motivation for the other. In Chapter I, we investigated how exposure to nicotine affects relapse for alcohol in rats. Nicotine did not affect relapse for alcohol, possibly due to the method of …

Utilizing Earth's Microbiology To Develop The Framework For A Manufactured Martian Nitrogen Cycle, Kyle Valgardson

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

History has shown us that space travel is a complicated activity not to be taken lightly. Extended missions such as those that would accompany a manned mission to Mars are guaranteed to have increased complexity and require creative solutions to problems we likely take for granted. One such issue is how to supply the necessary amount of nitrogen to the astronauts to keep them alive. Nitrogen is an essential component to life on Earth as most biological molecules, such as protein and DNA, contain a significant amount of it. Most organisms have to get it from what they eat, but …

Effect Of Biocrust Development On Establishment Of Native Plants In A Salt Desert System, Merran Owen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Salt desert shrublands are semiarid, shrub-dominated ecosystems that inhabit salt- affected soils. In Great Basin salt deserts, exotic annual plants are invading and displacing native plants. Low plant productivity and slow population growth of native plants in these ecosystems makes them vulnerable to invasion and limits their ability to compete with invasive plants and return to a natural state. Active revegetation efforts, such as planting and direct seeding of native plants, are often unsuccessful for the same reasons. Biological soil crusts (communities of cyanobacteria, lichen, moss, microfungi and other microorganisms that live on the surface layer of the soil) are …

Formal Verification Of The Adversarial Robustness Property Of Deep Neural Networks Through Dimension Reduction Heuristics, Refutation-Based Abstraction, And Partitioning, Joshua Smith

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Neural networks are tools that are often used to perform functions such as object recognition in images, speech-to-text, and general data classification. Because neural networks have been successful at approximating these functions that are difficult to explicitly write, they are seeing increased usage in fields such as autonomous driving, airplane collision avoidance systems, and other safety-critical applications. Due to the risks involved with safety-critical systems, it is important to provide guarantees about the networks performance under certain conditions. As an example, it is critically important that self driving cars with neural network based vision systems correctly identify pedestrians 100% of …

Demographics, Accuracy, And Impact Of Feed Laboratories In The United States, Jerald H. Severe

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Feed analysis is very important to modern society. In the United States feed analysis is used to optimize production of food animals. Feed analysis is also used as a tool to place value on crops. As important as feed analysis is to society, little research has been done that describes which feed laboratories are the most popular and why people use them. It has been thought by some patrons that different results from the same feed sample are obtained by different laboratories. Is this true? If so, what is the effect on those that use feed laboratories to produce animals, …

Habitat, Diet, And Foraging Ecology Of Willow Flycatcher In Sierra Nevada Meadows, Scott E. Dietrich

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The last stronghold of the California Willow Flycatcher (Empidonax traillii) population, which exists in the Sierra Nevada, continues to decline, necessitating a clearer understanding of how meadows provide habitat for the species. To gain this understanding, we assessed vegetation type, saturation levels, and invertebrate species at 51 different sites within four meadows located in the Little Truckee River drainage. 17 of these sites were occupied by nesting Willow Flycatcher during the time of the study, 17 sites had been occupied by nesting Willow Flycatcher in annual surveys between 1997 and 2010 but are no longer used, and 17 …