Digital Commons Network^™

A Description Of Lichen Community Structure And The Impacts Of Spruce Beetle Disturbance In Northwestern Colorado, Anna Freundlich

Master's Theses

Spruce beetle disturbance has affected millions of acres of forest throughout North America and Europe, but thus far little research has investigated how this disturbance influences lichen communities. To address this problem, we studied lichen communities and habitat characteristics within 44 plots across a chronosequence of spruce beetle damage spanning 1996–2017 in northwestern Colorado. We found 82 species of lichens, few habitat differences among spruce beetle disturbance classes, and only the most recently affected plots (2012–2017) had significantly different lichen community structure relative to remaining areas. Two primary gradients explained the majority of variation of lichen community structure within our …

Archaeobotanical Analyses Of The Winterville Mounds Site (22ws500) And Other Southeastern Ceremonial Complexes, Dana Hauffe

Master's Theses

The prehistoric Southeast region of the United States has had very limited archaeobotanical research focused on botanicals’ medicinal or ritualistic characteristics. An analysis of reported botanical remains recovered from Winterville Mounds (22WS500) and seventy- two other Late Woodland and Mississippian sites, from seven states, was conducted to identify their potential medicinal and ritual use of seventy-five botanicals based on reported ethnobotanical evidence. By classifying botanicals into four classes, modeled after the dissertation of Dr. Michele Williams in 2000, taxon frequency and feature ubiquity is configured and utilized to identify the possible ceremonial and medicinal use plants. At Winterville Mounds Site …

The Energetic Cost Of Anthropogenic Disturbance On The Southern Sea Otter (Enhydra Lutris Nereis), Heather Elizabeth Barrett

Master's Theses

With increased human populations and tourism in coastal areas, there is greater potential for disturbance of marine wildlife. Having high metabolic rates, sea otters (Enhydra lutris nereis) are at risk of increased energetic costs due to disturbance. To investigate these effects, sea otter activity in response to potential disturbance stimuli was recorded over three years, at three California locations: Monterey, Moss Landing, and Morro Bay. A hidden Markov Model was developed to examine how activity varies as a function of location, group size, pup to adult ratio, kelp canopy, and occurrence of and proximity to disturbance stimuli. Results were combined …

Reforming Beauty: The Casa Delle Zitelle And Female Asylums In Early Modern Venice, Kelly Renee Cricchio

Master's Theses

This thesis examines the Casa delle Zitelle (the House of Unmarried Girls), a female asylum created to care for poor, beautiful young girls who were at risk of becoming prostitutes in early modern Venice. The institution was founded, as well as funded and administered, by a group of pious patrician women in 1559. The Casa delle Zitelle was not only sponsored by and for women, but also the predominant patrons of the institution were Venetian women. The institution’s commitment to transform the zitelle (unmarried girls) into the sixteenth century ideal of womanhood was best articulated in the design of the …

A Phonetic Distance Approach To Intelligibility Between Mam Regional Dialects, Megan Simon

Master's Theses

Mam, an indigenous Mayan language spoken primarily in Guatemala, has considerable internal diversity among its regional dialects. The purpose of this thesis is to estimate their varying degrees of intelligibility and to present groups of dialects whose speakers can be reasonably expected to understand one another. The analysis consists of two parts, the computation of a phonetic distance network and a series of sociocultural interviews. Phonetic distance was measured by Levenshtein distance between cognates in word lists and analyzed with a Neighbor-Net network. Interviews with Mam speakers focused on subjective judgments of intelligibility, contact, and social attitudes. Four main dialect …

The Impact Of A Novel Mobile-Friendly Nutrition Education Intervention On Dietary Patterns Among Calfresh Applicants, Kelly Brookshire Condron

Master's Theses

Background: College students experience food insecurity at a rate 3.5 times higher than the U.S. general population, affecting 43% of students. Furthermore, college students consume high amounts of ultra-processed products. NOVA, a food classification system, takes into account food processing and is thought to better fit the modern food environment.

Purpose: The purpose of this research project was to examine the impact of CalFresh enrollment on food security status. This study also evaluated the impact of two different nutrition education interventions (MyPlate and MyPlate+NOVA) on participants’ dietary habits and nutrition knowledge.

Methods: Food security, dietary habits, and nutrition knowledge were …

Tidally Resolved Carbon And Nutrient Exchange Through Eastern Long Island Sound, Allison L. Byrd

Master's Theses

Long Island Sound (LIS) is an urbanized estuary that undergoes seasonal hypoxia in its western and central regions. Approximately 90% of the water exchange between LIS and the adjacent continental shelf, the Middle Atlantic Bight (MAB), occurs at the eastern LIS (ELIS) boundary. The contribution (import/export) of carbon (C), nitrogen (N) and phosphorous (P) from ELIS to the MAB has not been well constrained, though it is important for the management of LIS and coastal biogeochemical budgets. As a tidal estuary, sampling efforts are subject to a degree of natural variation that is currently not well quantified. To assess the …

Response And Recovery Of Horn And Petit Bois Islands, Mississippi, Usa To Tropical Cyclone Impacts: 2004 – 2016, Shara Gremillion

Master's Theses

Horn and Petit Bois islands are two of five Mississippi (MS) barrier islands that provide physical protection from tropical cyclones threatening the MS Gulf Coast, in addition to critical habitat for the northern Gulf of Mexico (GOM). In September 2004, Hurricane Ivan removed a large volume of sediment from the eastern ends of Horn and Petit Bois islands with its 1-2 m storm surge and ~194 kph wind speeds. Then, in August 2005 Hurricane Katrina severely impacted the two islands again with its 3.5-5.5 m storm surge on Horn and Petit Bois islands, and up to 204 kph wind speeds …

New England Slave Trader: The Case Of Charles Tyng, Paul J. Michaels

Master's Theses

Charles Tyng has been heralded as an American hero after the posthumous publication of his memoir, Before the Wind: The Memoir of an American Sea Captain, 1808-1833, in 1999. Recent research involving British Treasury report books from the nineteenth century suggest otherwise – that Tyng actively promoted and was engaged in the illicit trade of African captives. A Boston Brahmin, Tyng applied the lessons of his time at sea with Perkins & Company, the opium trading firm, to his occupation as an agent of notorious slave trading firms in Havana. This paper uses as evidence records of the captures …

Sidewalks To Nowhere: A Tool To Prioritize Pedestrian Improvements, Ho Yan Lai

Master's Theses

Walkability as a concept that captures the ability to walk from one place to another has multiple dimensions. Between traversability to being a proxy for better urban places, there are also numerous measurements of walkability that attempts to quantify certain or all aspects of walkability. It is, however, unclear, through a review of available literature, how these measurements of walkability relate to each other statistically. This methodology focuses on generating a framework for analysts to evaluate and prioritize pedestrian infrastructure. WalkScore™ (WS), HCM Pedestrian Level of Service (PLOS), Average Nodal Degree (AND), and Intersection Density are the four metrics selected …

Mapping Relict Charcoal Hearths In The Northeast Us Using Deep Learning Convolutional Neural Networks And Lidar Data, Eli Anderson

Master's Theses

Advanced machine learning combined with widespread, publicly available, airborne light detection and ranging (LiDAR) data has great potential to automate the extraction and classification of landforms and 17^th-early 20^th century land use features preserved under forest canopy throughout the northeast US landscape. Previous studies have shown that stone walls, house foundations and relict charcoal hearths (RCHs) stand out clearly in derivative LiDAR digital elevation model (DEM) products such as slope and hillshade maps, but to date, mapping has been mainly carried out by on screen digitization. In this study, a deep learning convolutional neural network (CNN) algorithm …

Measuring Cocoa Agricultural Productivity: A Spatio-Temporal Econometric Approach, Yurlady Chaverra-Palacios

Master's Theses

A significant increase of 50.5 percent in the national production of cocoa was registered between 2011 and 2015 in Colombia. Nevertheless, 5,890 tons were imported in 2015 to supply domestic demand. Unlike other crops, the production of cocoa has made a significant contribution to the income of approximately 38,000 families of which 90 percent are small farm-producers with very little capital. Facilitating credit for investment is one of the main strategies of the national government to increase cocoa productivity. Correspondingly, the impact of the credit for investment on the cocoa agricultural productivity and if those investments have a spillover effect …

The Long-Run Effects Of Tropical Cyclones On Infant Mortality, Isabel Miranda

Master's Theses

In the United States alone, each tropical cyclone causes an average of $14.6 billion worth of damages. In addition to the destruction of physical infrastructure, natural disasters also negatively impact human capital formation. These losses are often more difficult to observe, and therefore, are over looked when quantifying the true costs of natural disasters. One particular effect is an increase in infant mortality rates, an important indicator of a country’s general socioeconomic level. This paper utilizes a model created by Anttila-Hughes and Hsiang, that takes advantage of annual variation in tropical cyclones using annual spatial average maximum wind speeds and …

Captive Nations: Measuring Economic Growth On Native American Reservations In California, Mahsa Ashabi

Master's Theses

A history of institutional oppression and genocide has shaped Native American communities across the United States today, reflected in large disparities of socioeconomic outcomes and infrastructure. Due to a lack of comprehensive data and macroeconomic research, alternative forms of spatial data and theories regarding human settlement are needed to develop an understanding ofthis stagnation. In our efforts to better understand growth on Native American reservations, we utilize nighttime lights data to proxy for economic output in these geographic areas, measuring the settlement characteristics ofreservations themselves and against surrounding U.S. regions. Through a series of log-log regressions that focus on Zipf’s …

The Behavioral Determinants Of Well-Being In Sierra Leone, Madison Levine

Master's Theses

Ensuring the needs of individuals are met leads to a more prosperous economy. Healthy economic activity is dependent on a supported community of people. These people express different levels of happiness depending on where they come from and make behavioral choices every day influenced by their association with their community. Currently most subjective data have come from western educated industrialized rich and democratic (WEIRD) areas. These results are placed as generalizations across all other countries and are not giving an adequate representation of well-being for the population in non-WEIRD areas. Our study outlines an in-depth survey covering subjective well-being measurements …

Examining Genetic And Ecological Differentiation Of An Endemic Plant Species Found Across The Hawaiian Archipelago, Psychotria Mariniana, Tiffany L. Kho

Master's Theses

Speciation is a fundamental evolutionary process that remains poorly understood. Speciation ultimately begins with population divergence, so we can elucidate the complexities of speciation by first understanding the process and drivers of population divergence. To conduct population-level analyses, ecologists and evolutionary biologists have turned to island systems, primarily for their geographic orientation and high endemism. The Hawaiian archipelago is home to over 8,700 endemic species making it a great natural laboratory to study species diversification at the population level. The Hawaiian Psychotria (kōpiko, or wild coffee) make up 11 of these species and have been used to understand colonization and …

Alternative Paradigms For Synthesizing Household And Person-Level Attributes Jointly, Amit Ranjan Mondal

Master's Theses

In order to apply microsimulation-based models of land use and travel demand, socio-economic and demographic attributes are required for each individual in a region. This disaggregate level information is not readily available and planners resort to population synthesis procedures. This research includes two studies that are focused on developing alternative paradigms for population synthesis and for estimating sample household weights. In the first study, a simulation-based technique for multi-level population synthesis using a Hidden Markov Model (HMM) framework is presented. A comparative analysis is carried out to highlight the feasibility and applicability of the proposed approach in generating consistent multilevel …

Characterizing Vegetative Communities Across The Salt Marsh To Upland Ecotone In Connecticut: Indications Of Tidal Inundation Stress In The High Marsh, Matthew J. Ormrod

Master's Theses

The viability of Connecticut’s future salt marshes remains uncertain as pressure from multiple anthropogenic stressors and accelerated relative sea level rise continue to undermine the dynamic ecogeomorphic mechanisms that allow these landscapes to persist in times of environmental change. Observed rates of relative sea level rise in the Long Island Sound estuary appear to be accelerating since recording began in the early 1930s. Furthermore, as much as 90% of the land parcels expected to undergo habitat change as marine ecosystems migrate landward are privately owned and managed. This finding suggests that, in addition to these intrinsic ecogeomorphic feedbacks that make …

Are You Happy? Local Economic Development In Northern Thailand, Katherine Sorensen

Master's Theses

Thailand has had a long history of economic development. In recent years, Thailand began to focus on economic development initiatives a local level. The implementation process has been slow, but the introduction of social enterprise programs has proven a promising strategy in local economic development. Successful examples of economic development can be found in Thailand wherein this paper argues through collaboration between government agencies and local communities lies the key to success.

Qualitative techniques including a two months of fieldwork in Thailand, first hand observations, and appreciative inquiry interviews are used to analyze economic development initiatives in the communities of …

Geographical Analysis Of Offender Vulnerability: Modeling Coastal Hazards And Social Disorganization In Southern Mississippi, Ashleigh Nicole Price

Master's Theses

Hazards research continually examines how specific groups are affected by damaging events and how their unique sociodemographic characteristics contribute to variations in resilience and recovery. Studies have shown that underprivileged communities suffer more adversely and take longer to recover from hazard events. Probationers and parolees are uniquely disadvantaged regarding demographics and economic opportunity, both of which contribute to increased vulnerability and reduced resilience. Numerous legal restrictions and widespread discrimination towards former criminals means offenders are often relegated to underserved, criminogenic neighborhoods. Given such severe social and financial limitations, offenders have little capacity to prepare for or recover from disasters.

The …

Detecting Coastal Marsh Change From Aerial Imagery Using Spectral And Textural Methods: Pascagoula River Estuary, Mississippi, 1955-2014, Margaret Claire Bell Waldron

Master's Theses

As sea level rise accelerates, coastal marsh ecosystems are increasingly vulnerable. Vertical accretion rates must exceed or keep pace with rates of sea level rise to prevent transition to open water or inland migration of marsh vegetation. While some marsh systems along the northern Gulf of Mexico coast have remained stable, others, e.g., the marshes of the Louisiana Gulf Coast, have experienced high rates of conversion to open water. This study examined the historical extent of intertidal marsh at the mouth of the Pascagoula River in Jackson County, Mississippi to determine whether marsh extent changed during the period 1955-2014 and …

Hope For Struggling School Districts, Mary D. Travis

Master's Theses

Education improves the opportunities and life-chance outcomes of our children, and is a key factory in both economic and community development. Although high school graduation rates have shown improvement nationwide in recent years, public education is suffering from increasing inequality between different school districts and within the same school districts. Such inequalities widen academic outcome gaps and can result in entire school districts being branded as academic failures. However, there is also encouraging evidence of struggling schools and school districts moving toward improvement. Innovative leaders who are committed to inclusive and rigorous academics, shared leadership, and an in-depth understanding of …

Maize And Bone: An Evaluation And Expansion Of A Proposed Model For The Differential Diagnosis Of Pellagra In Human Remains, Myra G. Miller

Master's Theses

This study attempts to test and expand a previous study to establish a differential diagnosis of pellagra in human remains (Paine & Brenton, 2006a). Seven individuals with documented pellagra and nine individuals randomly selected for comparison from the Hamann-Todd Osteological Collection were evaluated for caries, alveolar bone loss, periostitis, osteoporosis, cribra orbitalia, and porotic hyperostosis. Results indicate that the pellagra sample had lower rates of caries and alveolar bone loss, and higher rates of periostitis of the tibia and fibula in relation to the comparison sample. No osteoporosis, cribra orbitalia, or porotic hyperostosis was found in the pellagra sample. No …

Mapping Sex Offenders And Treatment Centers In Relation To Social Disorganization, Amber Amin

Master's Theses

Research shows that the clustering of Registered Sex Offenders (RSOs) is connected to social disorganization. Residential patterns disrupt the reintegration of the RSO population. Utilizing data from Queens and the Bronx, NYC, this study examines RSO clustering in the two boroughs and explores the proximity of community resources to RSO addresses that may assist reintegration. Using data from the New York Megan’s Law and census data for Queens and Bronx Counties, maps were created to study the residential patterns of RSOs. The results show clustering of RSOs in areas with variables pertaining to high social disorganization and a lack of …

Avocado Root Rot: Steep, Rocky Terrain And Biodiversity Help Protect Small Farmers In Post-Conflict Colombia, Morgan Frankel

Master's Theses

In recent years, small avocado producers in coastal Colombia returned to their farms after decades of war to discover they must battle the pathogen Phytophthora cinnamomi devastating their trees. While this disease is well-described in the U.S., Australia, and Europe, no previous research has examined environmental correlates of P. cinnamomi in avocado in the diverse tropical agroecosystem of the Colombian Montes de Maria. I used agroecosystem inventory, in-field diagnostics, and disease observations to describe avocado agroecosystem diversity and identify relationships among P. cinnamomi presence, root rot disease, slope, pH, soil compaction, elevation, and distance to the household in remote smallholder …

Genetic Diversity In The Leucoagaricus Cultivar Fungus Of Trachymyrmex Septentrionalis Fungus-Growing Ants, Lee Deininger

Master's Theses

No abstract provided.

A Survey Of New England Sheep Producers, Arielle L. Halpern

Master's Theses

No abstract provided.

When Archaeology Interacted With The Bible: A Study Of The Search For The City Of Raamses Of Exodus 1:11 In The Searcher's Socio Political Context, Georg Filippou

Master's Theses

The purpose of this thesis is twofold. First, I will research what a selected group of authors and scholars has stated regarding their search for the biblical city of Raamses. 3 This step will involve research of the motive of those researchers who attempted to match Raamses of Exod 1:11 with geographical locations in Egypt, to follow their search within the social and political context of these scholars. Second, based on these scholars’ research, I will attempt to discover what happened when Bible and archaeology interacted in the search for the city of Raamses.

The study begins with some pages …

What Does Walk Score® Really Measure?, Jorge Simbaqueba

Master's Theses

The Walk Score® (WS) algorithm works by identifying the closest amenities (grocery stores, banks, restaurants, and schools) and awarding points based on the distance to them from a given location. Scores have a range between 0 and 100. In 2011, the Walk Score® (WS) founders and advisory board modified the algorithm to better account for pedestrian friendliness by adding block length and intersection density data into the model to represent roadway characteristics and named it Street Smart Walk Score®.

Modelers attempting to quantify accessibility often focus on two components: a transportation element (or resistance factor) and an activity element (or …

Tall Tales Of Danger And Security: How A Critical Human Security Approach Can Address Major Contradictions Revealed Through A Critical Narrative Analysis Of Dominant U.S. Security Strategies, Stephen Schneider

Master's Theses

Over many generations, humans have developed many perspectives and practices regarding the best ways to recognize and address what they perceive to be dangerous. Stories are used to help shape and narrate perceptions about the world, and they serve to pass on vital information that impacts how a society responds to threats and vulnerabilities. These narratives of danger and security are subjective to the experiences and political intentions of society, and therefore in many ways are partial and biased in their assessments and policies. This results in flawed security practices that may actually exacerbate threats or create new insecurities. What …