Digital Commons Network^™

The Role Of Bed Shear Stress In Sediment Sorting Patterns In A Reconstructed, Gravel Bed River, Samuel Emerson

Master's Theses

The role of bed shear stress in bed surface grain size sorting was investigated on a reconstructed reach of the Merced River in the Central Valley of California. Pebble count data were collected at the inside, middle, and outside of ten bends in April 2015 and compared to data from pebble counts conducted in previous years. Output from a previously developed 2D flow model (FaSTMECH) was compared to critical shear stresses calculated from median grain-size data. Comparison of pebble count results from 2002 through 2015 showed that there was no temporally consistent pattern of coarsening or fining along the study …

Emergency Shelter Resource Allocation And Location Analysis, Brett T. Decker

Master's Theses

This study formulates a mixed-integer facility location model to optimize emergency shelter location and resource allocation based on a set of existing candidate shelters. This model minimizes network access time between an affected census block and a potential emergency shelter, the operating costs of a shelter as a function of shelter capacity, and the cost of not accommodating all evacuees with emergency shelter capacity at the planning stage. This study consists of two parts, one conducting a sensitivity analysis for model parameters and executing the model for a worst case scenario and the second part expanding the model to include …

The Impacts Of Surface Conditions On Sea Breezes Over Coastal Connecticut, Eric Zachary Sinsky

Master's Theses

Sea breezes are mesoscale atmospheric coastal circulations that develop in response to diurnal variations in the land-sea thermal gradient resulting in cooler air temperatures in coastal regions. Accurate numerical model hindcasts and forecasts of sea breezes, used to study and predict these circulations, are important for a variety of communities beyond the atmospheric sciences. For example, sea breezes can influence marine processes such as oceanic upwelling, estuarine circulation, and air-sea fluxes, as well as impact the energy, aviation, and air quality industries. Representations of the coastline and sea surface temperature (SST) in the numerical model can influence simulated sea breezes. …

"Do Not Fashion The Other": Representing Contemporary Haudenosaunee Literature 2016, Michael Patrick Brewster

Master's Theses

Historically, the issue of representation in postcolonial studies is one of some contention. While scholarship might recognize the necessity for highlighting the plights and struggles attendant to postcolonial societies, the primary literature being studied is most often written by natives of those societies themselves. This gap is especially evident with Indigenous cultures, because there are relatively few Indigenous scholars working in the academy. We are at the point now when we have a multiplicity (but not a plurality) of Indigenous voices writing literature (poetry, memoir, fiction, film, etc.) and academic criticism. However, there is value in non-Natives reading and writing …

Alluvial Sedimentation Associated With Logging In Low Gradient Watersheds In Desoto National Forest, Mississippi, Andrew W. Simmons

Master's Theses

Forestry and related businesses are an important factor of Mississippi’s economy, contributing between $11 and $14 billion annually (Mississippi Forestry Commission, 2006). The timber industry is not only important in Mississippi but is an important sector of the economy throughout the Gulf Coast region. While providing positive economic benefits to the region, the forestry industry can also negatively affect soil properties, hillslope stability, and increase sedimentation rates in local streams and rivers. The aim of this research is to determine if forestry removal causes an increase of soil erosion and how it affects floodplain sedimentation in the low gradient watershed …

Fire And Fuels: Vegetation Change Over Time In The Zuni Mountains, New Mexico, Luke Wylie

Master's Theses

The Zuni Mountains are a region that has been dramatically changed by human interference. Anthropogenically, fire suppression practices have allowed a buildup of fuels and caused a change in the fire-adapted ponderosa pine ecosystem such that the new ecosystem now incorporates many fire-intolerant species. As a result, the low-severity fires that the ecosystem once depended on to regenerate the forest are much reduced, and these low-severity fires are now replaced by crown-level infernos that threaten the forest and nearby towns. In order to combat these effects, land managers are implementing fuel reduction practices and are striving to better understand the …

Mississippi College Towns: Assessing The Geography Of Collegiate Culture, Jordan Glynn Moore

Master's Theses

This study assesses the appearance of collegiate culture on the landscape of college towns in Mississippi. The research will add to the understanding of this phenomenon by contributing more focused studies of college towns not yet explored. Refining and adding to the concept of a “college town” by identifying physical and cultural factors that characterize it will open opportunities and provide options that will serve as a gateway for more pointed cross-disciplinary research. Not only are these towns havens for geographic research, but also for cross-disciplinary research pursuits due to their unique cultural characteristics. Using U.S. Census-derived maps and a …

Crops Or Crafts? Changes In Land Use In The Imbabura Valley Of Ecuador, Christopher Richard Hair

Master's Theses

In rural societies where urbanization and modernization are contributing to rapid growth, changes in land use can both reflect and bring about broader changes within a community. This study seeks to investigate changes in land use in the Imbabura valley of Ecuador from the perspective of the local inhabitants. To accomplish this, three data collection techniques were employed: repeat photography, ethnographic interviews, and archival research. Repeat photography involves re-photographing historic photographs from the original site. A combination of 35 historic photographs taken in the 1950s were re-photographed during the summer of 2015. The resulting repeat photo pairs were used in …

Analysis Of Transit Oriented Development Compatibility For Light Rail Station Areas Adjacent To U.S. Interstate Freeways, Eric D. Dorsey

Master's Theses

In 2006, the city of Denver completed a major phase of the T-REX project that included expanding a Light Rail Transit (LRT) system, building 13 stations along the corridors of Interstates 25 and 225. The expansion brought mixed concerns about whether locating the system alongside interstate freeways would produce transit-oriented developments (TOD), or if it intended to have stations that serve multiple purposes, some functioning as destinations and others serving as feeder stations to generate ridership for the system. This prompted a study to (1) create a typology of station areas and determine what type of station areas are located …

Waiting On You: A Study Of Tipped Minimum Wages' Effects On Job Tenure Among White Restaurant Servers, John Henry Sienkiewicz

Master's Theses

Many restaurant servers do not make adequate earnings under the current tipped wage system in America. On top of this, restaurant servers largely lack benefits such as paid sick days and health insurance. Unsurprisingly, those in the food and accommodation industry exhibit among the highest rates of voluntary turnover. As research has shown that raising the non-tipped, standard minimum wage decreases employee turnover and increases overall job tenure, it follows that increases in the tipped minimum wage may increase job tenure for restaurant servers. Using survey data from nearly 1700 white restaurant servers from 2006, this multiple regression analysis shows …

Predicting Suitable Habitat Decline Of Midwestern United States Amphibians And Quantifying The Consequence Of Declines Using Pond-Breeding Salamanders, Brock Struecker

Master's Theses

With current declines of vertebrate taxa meeting or exceeding those of historic mass extinction events, there is a growing need to investigate the main drivers of declines. Amphibians are perhaps at greatest risk of global climate change and land-use changes than most other vertebrate classes and also have significant roles in ecosystem processes – combined, this creates a cause for concern. I designed a study that would investigate the effects of current and predicted climate change and land-use changes on amphibians using species distribution models and a field study to identify the potential consequences of amphibian species declines by investigating …

Enhancing Scalability And Performance In Software-Defined Networks: An Opendaylight (Odl) Case Study, Priyanka Neelakrishnan

Master's Theses

One of the main attributes of software-defined networking (SDN) is the ability to make networks programmable and virtualizable. The SDN controller is the brain that sends instructions to the data plane and can be programmed via application APIs. The scalability and performance of the controller is of paramount importance to support large networks, such as the ones found in modern settings. This research work focused on exploring the ways in which the controller design could be scaled while maintaining sustainable performance using the OpenDaylight (ODL) SDN controller as a case study. This thesis shed light on a method of modifying …

Pretty Maps: Evaluating Gis Adoption Of Cartographic Design Standards And Best Practices In Professional Publications, David Medeiros

Master's Theses

The nature of GIS maps, as tools designed for visual communication, puts them in the realm of art that is in many ways unique among scientific tools. As a visual form of communication, maps are responsive to methods of visual design, affecting the map’s appeal and function. Through cartography, a well established body of standards and best-practices exists to help GIS users avoid common design errors and create effective and meaningful maps that support their work. This research examines the adoption rate of those standards amongst professionals using GIS software for creating maps for journal publications. A selection of 80 …

Women Business Leaders In Biotech And Hi-Tech, And Related Industry Cluster Factors, Jessica White

Master's Theses

Women entrepreneurs are on the rise and their numbers have grown at one and a half times the rate of small enterprises generally over the last 15 years. In spite of this, women are underrepresented in the fields of science, technology, engineering, and mathematics (STEM). Women face additional barriers when forging careers within these fields and obtaining startup capital. This study examines female business ownership within the fields of hi-tech and biotech, and the factors that support startups by women throughout the state of California. As both of these industry sectors are known to cluster geographically around sources of venture …

The Role Of The State, Multinational Oil Companies, International Law & The International Community: Intersection Of Human Rights & Environmental Degradation Climate Change In The 21st Century Caused By Traditional Extractive Practices, The Amazon Rainforest, Indigenous People And Universal Jurisdiction To Resolve The Accountability Issue, Marcela Cabrera Luna

Master's Theses

Local, national and international conventions that protect indigenous sovereignty and their territories, where many of the resources are extracted from by multinational corporations (MNCs) particularly oil, the number one commodity of the world and cause of climate change, continue to be jeopardized because of the lack of a clear international legal framework that can protect them and potentially hold multinationals accountable for their actions. These practices are causing not only environmental issues to the indigenous and surrounding communities, but climate change is in fact, the real human rights issue of the 21^st century and it affects everyone. By using …

The Vascular Flora Of Wayne County, Mississippi, Daniel M. Mcnair

Master's Theses

The vascular flora of Wayne County, Mississippi, was surveyed from 2013–2015, and the species of native and naturalized plants are listed. In total, 1,135 species were identified from field collections, previously collected herbarium specimens, and field observations. These belong to 556 genera and 165 families. Four of these species represent first recorded occurrences in the state of Mississippi: Blyxa aubertii Rich., Gomphrena serrata Pav. ex Moq., Isoetes valida (Engelm.) Clute, and Polypogon interruptus Kunth. GPS coordinates are given for important collection sites representing the diversity of plant communities in the county. All voucher specimens from the survey are deposited in …

An Integrated Drought Index (Idi) Incorporating Physical And Social Aspects, Rebecca L. Lanier

Master's Theses

The purpose of this research was to determine significant bio-physical (physical and environmental) and social variables that can be integrated into a drought index to predict areas susceptible to drought. Severe drought events are capable of causing millions of dollars in damage. The 1988 drought caused the United States approximately $40 billion in damage. Drought forecasting, modeling, and detection have, therefore, become imperative to understand the social, economic and environmental impacts of droughts, and also to explore how these impacts play a role in the occurrence of a drought. A number of drought indices widely used in the U.S. rely …

Feeding The South: An Assessment Of Food Availability In Rural Mississippi, Nicole Baiza Lawrence

Master's Theses

The overall goal of this project is to investigate Mississippi’s rural food environment by assessing the food resources available to rural Mississippians. The primary objectives were to identify sample locations in each of the four cultural regions of Mississippi and determine the food resources available to residents of those counties. The intellectual merit of this research lies in its in-depth exploration of food accessibility in rural areas. Though there is a wealth of literature on the topics of urban food access and food deserts, very little research has been done in rural areas. Most studies focus on urban environments which …

Burial Chronological Sequencing Of The Colonial Maya Cemetery At Tipu, Belize Using Fluoride Ion Analysis, Nicole Musselwhite

Master's Theses

This thesis ascertains the sequence of burials using fluoride ion electrode analysis at the colonial cemetery at Tipu, Belize in order to explore demographic and other cultural effects associated with European contact. The cemetery at Tipu in west central Belize, dating from within the first century of Spanish contact, has provided one of the largest and best preserved Maya skeletal series, with over 500 burials recovered. While this series has undergone vast amounts of analysis, there has yet been an analysis conducted to view how patterns changed over time. This is of interest given the rapid culture change associated with …

Recreation Ecology Of Colorado Fourteeners: An Assessment Of Trail Usage And Impacts, James C. Ewing

Master's Theses

The popularity of climbing Colorado’s 14,000 ft. peaks, or “Fourteeners”, has risen dramatically in recent years, raising important sustainability and management questions. Moreover, groups managing the peaks operate with major capital constraints so their efforts need to be informed, prioritized, and efficient. This paper gauges the dynamics of trail usage, explanatory variables, and recreational impacts across all 58 Fourteeners, and details evaluation adjustments that minimize error and produce results in-step with the resource management framework. Relative to a baseline study completed in 2005, substantial changes occurred in trail usage and impact dynamics. The greatest changes were concentrated on peaks previously …

Ritual And Religion In The Ohlone Cultural Area Of Central California, Doug Jones

Master's Theses

This thesis is an analysis of aspects of ritual and religion based upon reports from archaeological sites throughout the historical territory of the Native American peoples grouped by ethnographers under the term Ohlone, as well as other relevant sources of ethnographic, historical, and biographical information. Through research and review of recorded site documentation, as well as consultation with local archaeologists, three sites which clearly and extensively represent aspects of Ohlone religious life were identified and described in detail. This included type sites for mortuary practices, rock art, and cosmology/archaeoastronomy. The compilation and analysis of this material generated important information regarding …

Postcolonialism And The Marshallese Diaspora: Structural Violence And Health In The Marshallese Community In Springdale, Arkansas, Alexander J. Hirata

Master's Theses

Despite moving to the United States for better healthcare, among other benefits, Marshallese Compact of Free Association (COFA) migrants residing in Springdale, Arkansas continue to face similar acute health problems as Marshallese living in the Republic of the Marshall Islands (RMI), and often without access to health services. These problems include high rates of noncommunicable diseases, such as type 2 diabetes and thyroid cancer, as well as rare conditions such as Hansen’s Disease.

To research this, I studied the limited texts surrounding the Marshallese diaspora, as well as relevant bodies of literature: postcolonialism, Pacific migration theory, and global health and …

Movements, Habitat Use, And Demography Of Western Pond Turtles In An Intermittent Central California Stream, Joseph Paul Belli

Master's Theses

By Joseph P. Belli

Western Pond Turtles, Emys (Actinemys) marmorata, were captured (n=173) in 2011 (wet year) and 2012-2013 (successively drier drought years) along upper Coyote Creek, an intermittent stream in central California. Males outnumbered females 2.8:1, juveniles less than 120 mm long made up 26% of captures, growth rates varied among individuals, and little growth occurred in turtles older than 10 years. I radio-tracked turtles from May 2011 through August 2013 to ascertain movements and seasonal habitat use. Males had much larger home ranges than females (means of 2281 m for males and 501 m for females in 2012), …

Mobility For Whom? Local Mobility Structures And The Stratified Impact On Earnings And Poverty, D. Matthew Ray

Master's Theses

A dynamic class structure that fosters social mobility is the foundation of the American Dream, and is believed to be beneficial to all society. But are the benefits of mobility evenly distributed? Although the importance of mobility to the surrounding community is an intuitive idea, it has been difficult to test empirically with data until recently. Drawing from innovative mobility data provided by Chetty et al. (2014a) for Metropolitan Statistical Areas (MSAs), I study the social consequences of intergenerational income mobility occurring across the local class structure. I use ordinary least squares (OLS) regression to investigate the impact of local …

"Fire And Water Imagery" In Jane Eyre 2015, Shannon O'Loughlin

Master's Theses

Charlotte Bronte’s Jane Eyre is a study in contrasts. Critics have argued the implausibility of the novel, that an orphaned governess who marries her dashing employer is too far-fetched to be believed. However, a proper understanding of Jane Eyre must be based not on a sequence of events, but on the thematic form of the novel in which the signifiers relate to each other and shift throughout. Ferdinand de Saussure explains in his "Course in General Linguistics," that the mental concept one has of a word is its "signifier" (62). Charlotte Bronte relies not simply upon a sequence of events …

Spatial And Temporal Measures Of Mismatch Between Transit Supply And Employment For Low Income And Auto Dependent Populations, Sina Kahrobaei

Master's Theses

Spatial mismatch is a mismatch between where low-income households reside and where jobs are located. Since its emergence in the 60s, the implication of the term has been expanded and currently includes any mismatch between employment demands of low incomes and job supply. A sizeable literature has emphasized the role of public transportation to alleviate spatial mismatch problem. Better transit service can properly match low incomes to work so narrow such gap. The objective of this study is to research the levels that transit supply meets the spatial and temporal employment demands of worker population in general and the Low …

Human Impacts On Fire In De Soto National Forest, Mississippi, U.S.A., Charles Raymond White

Master's Theses

Fire is a common occurrence in the longleaf pine (Pinus palustris) forests of the Southeast United States. Prescribed fire is used to manage these threatened ecosystems, but information regarding historical fire activity is unknown. My goals were to determine the historical fire regimes in De Soto National Forest (DSNF), southern Mississippi, and determine the influence of climate and land use history on fire activity at two study sites: Fern Gulley Ridge (FGR) and Death Scar Valley (DSV). The composite mean fire interval during the prescribed burning period (1980–2013) was 3.4 years. During settlements periods, fire intervals at FGR …

Application Of A New Tree-Ring Based Drought Reconstruction Method At Multiple Forest Sites Across Indiana, U.S.A., Kayla Mechelle Pendergrass

Master's Theses

This thesis research used techniques of dendrochronology to investigate the efficacy of using multiple co-occurring species (MCOS) in a climate reconstruction model compared to a single species (SS) in four old-growth forests in Indiana: Pioneer Mothers Memorial Forest (PM), Donaldson Woods (DW), Hoot Woods (HW), and Lilly Dickey Woods (LD). The objectives of this study were to [1] evaluate the climate response of all chronologies (n = 19; 7 species) to determine the most appropriate climate variable for reconstruction and [2] determine if the MCOS model outperforms the SS model at each individual study site. Model comparison was conducted …

Biogeochemical Alteration Of Particulate Pyrogenic Organic Carbon (Pyc), Jason Matthew Stuart

Master's Theses

The resistance of plant derived pyrogenic organic carbon (pyC) to abiotic and biotic means of degradation has led to increased interest in the role of pyC as a potential carbon sink, as well as a strategy for sequestering atmospheric CO2 to mitigate excess carbon emissions. Though much research pertaining to the fundamental properties of pyC degradation have been performed in a controlled lab setting, there has been very little work regarding pyC degradation in a field setting where factors such as precipitation and temperature fluctuate seasonally. This work focuses on various degradation characteristics of two …

Dirt Roads And Dual-Sports: Geography And Mobility Of The Trans-America Trail, Joseph Samuel Miller

Master's Theses

The purpose of this research was to examine the mobility that has become associated with the Trans-America Trail (TAT). I explored the ways this motorcycle route changes across space, how the characteristics of adventure motorcyclists have created the representation of the TAT, and how the mobility of this route can be described in terms of Cresswell's six politics of mobility––motivation, speed, rhythm, route, experience, and friction. Using a mixed methods approach, I measured quantitative characteristics of the route using maps and GIS; I used ethnographic methods collected from my own trip across the TAT to understand the landscape and the …