Digital Commons Network^™

The Little Devil, Stefan Peña

Theses and Dissertations

The Little Devil is a series of moments in the life of a character named Boy. The story follows a loose plot that jumps around different time periods and states of mind of the protagonist in an imaginary town that has elements of both a small midwestern town and a semi-arid desert.

Mr. Crow, a local entrepreneur, and Irene who owns the local diner are both heavily involved in the lives of other citizens and use secrets as a form of currency. However, Mr. Crow uses his knowledge for personal reasons while Irene simply wants to know truth.

Although it …

Chemical Investigation Of Camu Camu (Myrciaria Dubia) Leaves And Roots, Jorge L. Flores

Theses and Dissertations

Flores, Jorge L., Chemical Investigation of Camu Camu (Myrciaria dubia) Leaves and Roots. Master of Science (MS), December, 2020, 45 pp., 8 Tables, 28 Figures, 21 references, 12 titles.Being the largest on the planet, the Amazon rainforest also has the greatest biodiversity of plant life on earth. In the lowland regions of the Amazon grows the Peruvian camu camu (Myrciaria dubia) plant. A short and shaggy shrub, camu camu produces a tasty but sour fruit. Camu camu’s berry-like fruit is widely consumed by the native people of the Amazon. Its distinguished richness in vitamin C, as …

Nd Doped Zinc Oxide Based Flexible Pvdf Polymer Composite For Energy Harvesting And Sensory Application, Muhtasim Ul Karim Sadaf

Theses and Dissertations

Flexible Piezoelectric devices have garnered a lot of attention for their potential as energy harvesters and transducers. Zinc Oxide particularly has been doped with different metals and has been incorporated in functional polymers in order to produce flexible piezoelectric devices. In this work, a Neodymium doped Zinc Oxide based flexible piezoelectric energy harvester and sensory device has been developed. For that, neodymium doped zinc oxide has been synthesized using wet chemical co-precipitation method and then has been incorporated in Polyvinylidene Difluoride (PVDF) polymer matrix along with Multiwalled Carbon Nanotubes (MWCNT) to produce flexible piezoelectric films. Silver paste was applied on …

Optimization Of Port-Of-Entry Operation In The U.S.: An Anti-Human Trafficking Focus, Priscila De Azevedo Drummond

Theses and Dissertations

Although decisions at the U.S. port-of-entries take into consideration many factors and stakeholders like government, citizens, travelers, security is their main priority. Officer's decision relies on letting someone into the country or forbids their entrance if they present some threat. They are trained to detect criminals, but little focus is given to identify possible victims. This thesis presents a model that finds an optimal policy regarding how many travelers are going to be conducted to further screening to better detect human trafficking victims. A Bayesian Decision Model was developed and the estimation of costs for …

The Processing And Characterization Of Nano Composite Nano Fibers For Various Applications, Md Toukir Hasan

Theses and Dissertations

The study of this thesis focuses on the force spinning of polymer composite nanofibers for antibacterial and energy storage applications. For energy application, Polyacrylonitrile (PAN), Polymethyl methacrylate (PMMA) polymers with active materials (Sn & Ti) and for antibacterial purposes, Polyvinylpyrrolidone (PVP) and Polyethylene-oxide (PEO) polymers along with NPs (Ag and Cu), both were centrifugally spun to get finer nanofibers. The spun produced nanofibers of each types ascertained the percentage of active materials accurately. Antibacterial test on PEO/Ag composite nanofibers exhibited 100% inhibition efficiency against E. coli and B. cereus bacteria while PVP/Cu, PEO/Cu fibrous membranes showed 97.98%, 98.99% respectively. CuNPs …

Investigation Of Techniques And Their Application For The Cryopreservation Of Algal Species, Jazmine Leija

Theses and Dissertations

An alternative source for petroleum-based crude oils are algae derived biofuels. Fossil fuels are harmful for the environment, expensive and becoming scarce. There has been an increase in research on environmentally sustainable energy, using lipids derived from microalgae, which can be converted into biofuel. The use of microalgae as a source for biofuels has a lot of benefits including decreasing greenhouse gas emissions, rapid fuel production, absorption of carbon dioxide, and production of a renewable source of energy.

Algae cryopreservation aids in the maintenance of the best algae strains selected for producing lipids for biofuels. Cryopreservation will help minimize genetic …

Effects Of Saltatory Rewards And Generalized Advantage Estimation On Reference-Based Deep Reinforcement Learning Of Humanlike Motions, Md Rysul Kabir

Theses and Dissertations

In the application of learning physics-based character skills, deep reinforcement learning (DRL) can lead to slow convergence and local optimum solutions during the training process of a reinforcement learning (RL) agent. With the presence of an environment with reward saltation, we can easily plan to magnify those saltatory rewards with the perspective of sample usage to increase the experience pool of an agent during this training process. In our work, we have proposed two modified algorithms. The first one is the addition of a parameter based reward optimization process to magnify the saltatory rewards and thus increasing an agent’s utilization …

Effects Of Early Corticosterone Treatment On Vocal Babbling In Wild Green-Rumped Parrotlets (Forpus Passerinus), Celia Rose Mclean

Theses and Dissertations

The stress axis of the endocrine system allows for animals to respond to environmental stressors in contextually appropriate ways. Elevated levels of the stress hormone corticosterone (CORT) in male songbirds can result in compromised song learning ability. Parrots form a sister group to songbirds, but it is unknown whether CORT affects vocal development in parrots. The goal of this study was to assess the effects of CORT supplements in green-rumped parrotlets (Forpus passerinus), a free-ranging parrot species in Venezuela. Bouts of vocal babbling were extracted from nest box videos and analyzed. CORT supplementation resulted in differences in babbling …

Embroidering Mexico: Feminine Spaces, Dechados And The National Space, Regina Perez Kamel

Theses and Dissertations

Mexican dechados consisted of pieces of cloth were women and girls would practice and record needlework. It was a practice rooted in western tradition where they were known as samplers. Given that dechados were objects that were made within feminine spaces they illuminate how gender is constructed through space, and how those gendered spaces generate different ways of knowing.

As the majority of Mexican dechados correspond to the nineteenth century, a period of national construction, this study questions the role that the domestic space played in the establishment of the Mexican nation. It proposes that although displaced and subservient to …

Production And Characterization Of Polyurethane Fibers By Forcespinning Method And Incorporation Of Luminiscense Nanoparticles, Sunanda Kumar Saha

Theses and Dissertations

In this work, Polyurethane (PU) fine fiber nonwoven mats are generated using the Forcespinning® method. A detailed study focusing on the effect of PU concentration within solutions of N, N Dimethylformamide and the effect of relative humidity (RH) on fiber average diameter and fiber yield is presented. Solutions were prepared with 4 different concentrations, 14, 15, 16 and 17 wt% of PU. It was observed that as concentration of PU increases, average diameter shows a tendency to increase. Production of fibers with RH varying from X to X was analyzed. It was shown that higher RH is convenient for PU …

Necessitation Through Growing Entanglements: Why We “Can’T Live Without” Some Products, Jakob Braun

Theses and Dissertations

Much research has been concerned with what constitute necessities and how they are related to pertinent concepts, such as needs, wants, desires, and luxuries (Belk, Ger, and Askegaard 2003; Duncan 2002; Fraser 1998, Hoyer and MacInnis 2004; Kerin, Hartley and Rudelius 2004; Sheth and Mittal 2004). Using thing-focused approaches, earlier studies are primarily concerned with classification schemes using dichotomies such as need-want and necessity-luxury. Studies that employ a human-focused perspective challenge these divisions and argue that necessities cannot be studied without considering the social and historical contexts (e.g., Buttle 1989; Firat 1987). Notwithstanding the important contributions that these studies have …

Biochar Applications To The Remediation Of Lead And Polychlorinated Biphenyl Contaminated Water, Victory Itua Igberase

Theses and Dissertations

This study investigated the performance of biochar materials as adsorbents to remove Pb and polychlorinated biphenyl (PCB) in aqueous solutions. Batch adsorption and column experiment packed with biochar and geomaterials (pumice) in 1:1 volume ratio was evaluated to address the efficacy of biochar in removing Pb while only batch adsorption was employed for PCB removal with biochar materials. Overall, PT biochars performed the best (42–53 mg g−1) followed by BE biochars (10–32 mg g−1) and AB biochars (17–27 mg g−1) while high temperature biochars were favored in terms of maximum Pb adsorption capacity. Column Pb breakthrough showed similar results, with …

I Buy Less When Others Suggest: Impact Of Personal Relative Deprivation, Temporal Discounting, Social Norms And Store Reputation On Food Over-Acquisition, Swapnil Saravade

Theses and Dissertations

Food over-acquisition has shown to have detrimental consequences such as food over-consumption, food waste, obesity, and greenhouse effects. Extant literature has typically focused on food over-consumption, with little explanation of its precursor, food over-acquisition. The current thesis situates the research in grocery retail and examines why people over-acquire food. Further, which interventions can marketers develop to mitigate food over-acquisition and in which grocery stores would those be effective? The present dissertation approaches this issue by drawing concepts from two disciplines, sociology, and behavioral economics. Through five studies, the current thesis shows that when people feel relatively food-deprived, they tend to …

Soil Chemistry Modification By Guinea Grass In Semi-Arid Soils: A Litter Mediated Positive Feedback, Vanessa Elizabeth Thomas

Theses and Dissertations

Nutrients are a key component of healthy soils. Their composition plays an important role in plant growth through nutrient cycling and directly influences the functioning of plant communities in both agricultural and natural ecosystems. Shifts in macronutrients such as phosphorus and nitrogen may be initiated by invasive growth as a driver for competition with native plants. The goal of this study is to explore the plant soil feedback in an exotic invasive plant, Guinea grass (Pancium maximum), an invasive bunch grass originally from Africa, across different habitat types in the Lower Rio Grande Valley (LRGV). To determine a positive plant …

A Biological Assessment Of Oyster Restoration Mats Throughout The Indian River Lagoon: Changes In Community Composition And Filtration Capacity Of Living Docks, Morgan Katherine Gilligan

Theses and Dissertations

Like many estuaries worldwide, the Indian River Lagoon (IRL), has seen a decline in resources and overall water quality due to human activities. There is a growing interest in implementing ecological engineering methods to restore water quality. One such method is the construction and deployment of oyster restoration mats on dock pilings, known as the Living Docks program. This community driven program was founded at Florida Tech with the goal of promoting the growth of filter feeding benthic organisms to improve local water quality. Since 2013, twelve docks have been deployed in the central IRL, spanning from Cape Canaveral (28º …

Participant Reference In Colombian Sign Language Narrative, Martha Lois Gateley

Theses and Dissertations

Much of the research on discourse in sign languages thus far has been carried out on American Sign Language. With this thesis, I add to the current research by comparing what is known about participant reference in American Sign Language with Colombian Sign Language.

This thesis analyzes six separate stories totaling 72 minutes, signed by 5 different native signers of Colombian Sign Language. ELAN (a computer software for annotation) was used to mark all of the referring terms in the subject position and categorize the terms by type (nominal reference, pronominal reference, zero-anaphor, and classifier) and by function (introduction, reintroduction …

Pre-Columbian Cultivation Of Agave Species Through Rock Mulching: Potential For Modern Applications, Hector Genaro Ortiz Cano

Theses and Dissertations

As global temperatures rise, cultivation of C3 and C4 crops in arid and semi-arid regions will face major challenges in producing biomass for billions of people. Conventional agricultural techniques that require copious irrigation will need to be complemented with dryland-farming techniques and drought-tolerant crops, such as those from the Agave genus, which use CAM photosynthesis. In the past and present, humans from arid and semi-arid regions of America have maintained a symbiotic relationship using and cultivating Agave (Agavoideae, Asparagaceae). In pre-Columbian times, Native Americans from arid regions relied on Agave cultivation as a subsistence crop to produce food, medicine, and …

Effects Of Feeding Enrichment On The Behavior Of Ex-Pet Ring-Tailed Lemurs (Lemur Catta), Amanda Rodriguez

Theses and Dissertations

Environmental enrichment is a prevailing tool used to enhance the welfare of captive species. Benefits of enrichment commonly range from promoting activity levels to reducing stereotypic/abnormal behavior. This study investigated the impact of two forms of feeding enrichment on the behavior of ring-tailed lemurs confiscated from the illegal pet trade.

Monitoring Domestic Sheep Energy Requirements And Habitat Selection On Summer Mountain Range Using Low-Cost Gps Collar Technology, Elizabeth M. Baum

Theses and Dissertations

With the advent of global position system (GPS) collar technology, we have developed a much greater understanding of the temporal and spatial distribution of livestock and their associated grazing patterns. While significant research using GPS collars has been reported for cattle, little research is available describing collar use in understanding the behavior of domestic sheep. The purpose of our research was to evaluate the energy requirements of sheep with the use of GPS collars. To accomplish this, we adapted a low-cost i-gotU GPS tracking device that is typically designed for cattle and modified it to fit sheep. Each collar was …

Optimizing University Campuses For Learning, Wellbeing And Equity: An Applied Study Of Higher Education Facilities Organizational Systems, Melissa Nergard

Theses and Dissertations

College and university campuses are designed and maintained by experts in facilities management and planning. What is lacking in these processes is expertise in learning environments and creating spaces that are healthy and inclusive. University organizational structures aid in the autonomy of academic freedom and the nimbleness of research endeavors but hinder operational effectiveness of the campus as a learning and research environment. A more integrated approach, which optimizes the knowledge on campus regardless of where it is housed, can mitigate the unintended conflicts that develop through the disparate approach to learning, equity, and wellbeing in the built environment. This …

Modeling Current And Future Windblown Utah Dust Events Using Cmaq 5.3.1, Zachary David Lawless

Theses and Dissertations

Windblown dust events can be defined as windblown dust emitted from the Earth's surface to the atmosphere. These events have significant impact on local air quality. Predicting the location and magnitude of these events is vital for Utah air quality assessment and planning. Previous modeling studies have focused only on past dust events. This work utilized a state-of-the-science software framework based on the Community Multiscale Air Quality (CMAQ) v5.3.1 modeling system to predict dust events in Utah. The framework was verified using previous studies for dust events in April 2017 and March 2010. Once verified, the framework was used to …

Increasing Introductory Biology Students' Modeling Mastery Through Visualizing Population Growth Models, Samantha Rae Wasson

Theses and Dissertations

In introductory biology, college students are taught to predict how populations will grow and change over time by using population growth models. These models are commonly represented as mathematical equations. However, students consistently struggle when math and biology concepts intersect in the classroom, and these struggles lead to suboptimal understanding of how mathematical population models are designed and used. Education literature suggests that students may struggle with population modeling because of math anxiety, the high cognitive load of the task, and the lack of scaffolding for abstract concepts. In our study, we sought to improve student mastery modeling exponential growth, …

The Music Of Rivers: How Climate, Land Use, And Disturbances Tune The Frequencies And Volumes Of Streams Worldwide, Brian Charles Brown

Theses and Dissertations

The amount of water flowing through streams and rivers changes through time. The seasonality and duration of these changes can have profound impacts on human freshwater availability, aquatic habitat, and biogeochemical cycling. Numerous factors are thought to influence streamflow regime, including drainage basin area, temperature, precipitation, and land cover. Few of these qualities have remained untouched, either directly or indirectly, by expanding human activities. Altered climate, sweeping changes to large portions of the earth's surface, and the construction of dams and other infrastructure have fundamentally altered streamflows worldwide. Understanding the nature of these changes, both globally and regionally in the …

Severe Behavior And Restraint Use In A Hospital Setting For Patients With Autism Spectrum Disorder, Giovanna L. Salvatore

Theses and Dissertations

Physicians in hospital settings are treating an increasing number of patients with autism spectrum disorder (ASD). The occurrence of severe behavior is heightened for patients with ASD in hospital settings. Restraint is a commonly cited strategy to manage severe behavior across hospital departments; however, research on physician management of severe behavior in patients with ASD across the lifespan is lacking. Our sample included 25 participants across three medical trainee focus groups and three physician interviews. We investigated their experiences with severe behavior management and restraint implementation in patients with ASD at an urban teaching hospital. Transcripts were thematically analyzed using …

A Comparison Of Heat Treatment-Induced Skeletal Muscle Adaptations Relative To Exercise Training, Jamie Puanani Brun Kaluhiokalani

Theses and Dissertations

In vitro and animal studies indicate that the response to heat stress is associated with beneficial adaptations that promote cell health and survival. Few studies to date have examined this finding in human subjects, and it is unclear how the adaptation compares in magnitude to exercise training. The purpose of this study was to investigate the skeletal muscle adaptations (namely mitochondrial biogenesis and capillarization) of 6 weeks of deep-muscle heat treatment relative to exercise training. We hypothesized that heat treatment (HT), applied through pulsed shortwave diathermy (2 hr, 3 days/week) over a 6-week intervention period would lead to increased mitochondrial …

Understanding The Interaction Between Habitat Use Of Feral Horses And The Abundance Of Greater Sage-Grouse In The Great Basin, Mikiah R. Carver

Theses and Dissertations

Environmental impacts of feral horses (Equus caballus) are a subject of conservation concern and controversial national policy. In North America, feral horses are considered an invasive species where they impact rangelands of the arid and semi-arid western United States. The greater sage-grouse (Centrocercus urophasianus) is a native sagebrush obligate bird species that relies on sagebrush habitats to sustain viable population levels. Recent literature suggests that feral horse presence can have a notable effect on the fitness of native and sagebrush obligate species throughout the arid and semi-arid western United States. The purpose of this thesis was to assess the potential …

Exposing Necrocapitalism, Slow Violence, And Precarity: Necropolitics In The Grapes Of Wrath, Dinorah Arista

Theses and Dissertations

This work begins by briefly exploring the historical, environmental, economic, and sociopolitical factors springing up from the Great Depression to the Dust Bowl migration. Although it is argued that John Steinbeck wrote The Grapes of Wrath through a religious lens, Steinbeck alludes to the Bible only as a bridge to a social gospel. More importantly, my focus is mainly centered on Achille Mbembé’s concept of necropolitics (the sovereign right to decide who lives and who dies) and applying it to the first world country of the United States. Mbembé expands on Michel Foucault’s concept of biopolitics by including the state …

Pinpointing Pornography's Effects: Paring Off The Influences Of Masturbation, Sexual Desire Discrepancy, And Sexual Engagement In Heterosexual Dyads, Brady C. Eisert

Theses and Dissertations

Pornography has increasingly become a hot topic of discussion in the United States, likely due to its increasing rate of consumption. Recent scholarship has indicated the need to account for factors such as masturbation and sexual desire discrepancy when conducting pornography research. The current study isolated the influence pornography use had on those in heterosexual romantic relationships (N=713 couples) by parsing out the effects of sexual desire discrepancy and masturbation. This was done by using a series of nested actor-partner interdependence models (APIM) to see how the relationships between pornography use and sexual satisfaction changed in each model. Masturbation and …

The Tragedy Of Conscience In Edgar Allan Poe's Tales: A Nietzschean/Freudian Dialectical Approach, Melissa Christina Castro

Theses and Dissertations

The American Gothic tales of Edgar Allan Poe often follow protagonists that are mentally plagued by their conscience. These protagonists attempt to rid themselves of their conscience through violent actions that bring them a momentary sense of freedom before their immediate downfall. For various literary critics, Poe’s recurrent theme of ridding oneself of a conscience has put into question the need or motivation for such actions. As Poe’s protagonists demonstrate an internal split of the mind, it is evident that there are extreme oppositional forces in the psyche that influence the actions of his characters. The theoretical studies put forth …

A Comparative Study Of The Microhabitat Selection Of The Scorpion Centruroides Vittatus In The Tamaulipan Biotic Region Of South Texas, Fatima Malanastas

Theses and Dissertations

Microhabitat selection of the striped-bark scorpion (Scorpiones; Buthidae), Centruroides vittatus (Say 1821), can be affected by different factors such as prey availability, risk of predation and environmental factors such as temperature and humidity. The effects of temperature, humidity, range were also performed. There was a significant interaction among the three different study sites, microhabitats, and size classes. For all threestudy sites, the pooled smaller scorpions and the large scorpions were seen at higher frequencies compared to the intermediate scorpions. Both the small and intermediate scorpions were seen on vegetation at a higher frequency. However, the large scorpions were seen on …