Geography Commons^™

Aerialformer: Multi-Resolution Transformer For Aerial Image Segmentation, Taisei Hanyu, Kashu Yamazaki, Minh Tran, Roy A. Mccann, Haitao Liao, Chase Rainwater, Meredith Adkins, Jackson Cothren, Hoang Le

Industrial Engineering Faculty Publications and Presentations

When performing remote sensing image segmentation, practitioners often encounter various challenges, such as a strong imbalance in the foreground–background, the presence of tiny objects, high object density, intra-class heterogeneity, and inter-class homogeneity. To overcome these challenges, this paper introduces AerialFormer, a hybrid model that strategically combines the strengths of Transformers and Convolutional Neural Networks (CNNs). AerialFormer features a CNN Stem module integrated to preserve low-level and high-resolution features, enhancing the model’s capability to process details of aerial imagery. The proposed AerialFormer is designed with a hierarchical structure, in which a Transformer encoder generates multi-scale features and a multi-dilated CNN (MDC) …

No. 25: Responses To Covid-19 By Internal Migrants In South African Cities, Jonathan Crush, Godfrey Tawodzera, Maria Salamone, Zack Ahmed

Migration and Food Security (MiFOOD) Network

This paper explores the disproportionate impact of COVID-19 on internal migrants in the urban centres of Cape Town and Johannesburg, South Africa. Focusing on the socio-economic and livelihood challenges faced by this population, the research utilizes a survey conducted in 2023 to investigate how the pandemic exacerbated existing vulnerabilities. Results highlight significant disruptions in employment, increased economic hardship, and heightened health risks among migrants, particularly those living in low-income neighbourhoods. Despite the hardships, very few migrants intended to permanently return to their rural origins, indicating a complex interplay between economic necessity and pandemic-induced constraints. The findings underscore the unique challenges …

No. 24: Food And Health Security Among Burmese Migrant Domestic Workers In Singapore Amid Myanmar’S ‘Triple Crisis’, Brenda Yeoh, Franchesca Morais, Theodora Lam, Kristel Acedera, Bittiandra Chand Somaiah

Migration and Food Security (MiFOOD) Network

Migrating overseas to work as domestic workers is an increasingly important livelihood strategy for capital-poor women in Southeast Asian countries such as Myanmar. However, the recent COVID-19 pandemic and civil unrest in Myanmar has highlighted the entrenched precarities and uncertainties attached to this migration strategy. The health crisis has further heightened the importance of remittances and food security for migrants and their sending households. Food production, food systems and access to food supplies in the country have been especially hit by political instability, the energy crisis and inflation. This paper explores issues concerning the food and health security of female …

No. 26: Pandemic Precarities And Remittance Narratives In The Global South, Jonathan Crush, Sujata Ramachandran

Migration and Food Security (MiFOOD) Network

The COVID-19 pandemic has been referred to as a great disruptor of global migration leading to a crisis of immobility caused by public health lockdowns, closed borders, and the suspension of visa processing. Layoffs and retrenchments of migrant workers led to widespread hardship and an intensification of pre-pandemic precarity, as well as disrupted remittance channels and flows. Against this backdrop, the paper provides an overview of current debates about the relationship between COVID-19 and international migration in the context of South-South migration. We assess how pre-pandemic South-South migration flows were disrupted by the pandemic and the evidence for a crisis …

Paths Of Least Resistance: A Geospatial Analysis Of The Integration Of Mississippian Communities In The Northwest Arkansas Ozarks, Joseph Jilek

Anthropology Undergraduate Honors Theses

During the Mississippi period (ca. AD 1050-1500), native groups occupying bluff shelters in the Northwest Arkansas Ozarks constructed three similarly sized mound-and-plaza centers: Goforth-Saindon (3BE0245), Collins (3WA0001), and Huntsville (3MA0022). Similarities in size and number of mounds suggests none rose to a position of power over the other and each integrated a separate community. Previous research hypothesizes that communities in emergent complex societies such as these are best defined by those who you interact with regularly, with mound centers less than a day’s travel from each other likely integrating the same communities. This study uses least-cost analysis, generating likely travel …

Making Waves In The Snow World: Microwave Remote Sensing And Infrasound Interactions With Seasonal Snow, Zachary Marshall Hoppinen

Boise State University Theses and Dissertations

Snow has profound impacts on our globe, economies, and ecosystems serving as a vital reservoir for drinking and irrigation water, renewable hydroelectric power, and as a natural hazard. However, effectively monitoring snow and snow water equivalent (SWE) presents challenges due to interannual variability, with SWE fluctuating by over 500 mm between years and peak snowmelt timing varying up to a month. These challenges will be further exacerbated by the non-stationarity of these snow and avalanche patterns in a changing climate requiring new spatially and temporally expansive remote sensing.

In this dissertation, we explore the potential of two evolving remote sensing …

Rural-Urban Migration And The Extent Of Urbanization: A Case Study Of Rural Migrants From Northern Ghana To Accra, Daniel Kissi-Somuah

Graduate Theses and Dissertations

This study delves into the dynamics of rural-to-urban migration, emphasizing its impact on urbanization in the unique context of Ghana. As migration patterns evolve globally, understanding the motivations and challenges of internal migration is crucial for informed policy-making. The case study focuses on migrants from Northern Ghana to Accra, exploring factors propelling urbanization, challenges in urban job searches, and proposing strategies for managing urbanization. The research uses a comprehensive methodology to draw on extensive data from the 2021 Population and Housing Census. Utilizing thematic reports on migration, economic activities, background characteristics, and education, the study employs descriptive and inferential statistical …

Transforming Grassland Conservation: Challenges And Opportunities Across Law, Policy, And Human Dimensions, Conor D. Barnes

Dissertations and Doctoral Documents, University of Nebraska-Lincoln, 2023–

Great Plains social-ecological systems are facing growing pressure from complex, ‘wicked’ problems. Addressing these problems will require integrating ecological resilience and complex systems thinking concepts into our legal framework in order to better reflect the changing ecological reality of the Great Plains and promote flexibility and adaptability in the face of that change. In this dissertation, I examine how past and present policy priorities have affected social-ecological systems on the Great Plains, and how ecological resilience and complex systems thinking might be applied to grassland management policy. In Chapter 2, I examine the rapid progress made in the adoption of …

Remotely Sensed Early Warning Of Algal Blooms In An Eastern Nebraska Reservoir: A Comparison Of Temporal And Spatial Indicators, Mercy Kipenda

School of Natural Resources: Dissertations, Theses, and Student Research

Cyanobacterial harmful algal blooms (CyanoHABs) detrimentally affect human, animal, and ecosystem health. Remotely sensed early warning systems for cyanoHABs in inland lakes could contribute to more proactive water quality monitoring and help mitigate negative impacts. Advances in freely available remote sensing imagery, with finer spatial, temporal, and spectral resolutions, present new opportunities for the development and comparative analysis of methods to detect sudden deterioration in lake water quality. In this thesis, I compared and tested for temporal and spatial early warning signals of cyanoHABs in field-based and remotely sensed datasets from 2019 to 2023 in Pawnee Lake in southeast Nebraska, …

Assessing, Restoring, And Centering Social–Ecological Relationships For Advancing Social–Ecological Resilience In The Northern Great Plains Grasslands, Katia Pilar Carranza Bernal

School of Natural Resources: Dissertations, Theses, and Student Research

The Northern Great Plains grasslands are social-ecological systems that were shaped by evolutionary and Indigenous social-ecological relationships. European colonization disrupted many of these interactions, including the coupling of fire and grazing, and degraded social-ecological resilience, shifting these grasslands to a new state. For those reasons, my research focused on assessing, restoring, and centering evolutionary and Indigenous social-ecological relationships for advancing social-ecological resilience in the Northern Great Plains grasslands. I first performed a study in the Nebraska Sandhillls assessing the potential of patch-burn grazing to support grassland resilience by comparing its effects to those of rotational grazing. Through vegetation and bird …

Sensitivity Of Present And Future Seasonal Precipitation Over Central United States To The Representation Of Rocky Mountain Topography, Ranasinghe Disanayakalage Sherly Shelton Ranathunga

Department of Earth and Atmospheric Sciences: Dissertations, Theses, and Student Research

Precipitation change across the Central United States (USA) is of great interest to the research community. Studies using global climate simulations suggest that the “100^th-Meridian”, which separates the “dry west” from the “moist east” will shift to the east as the climate responds to future emissions pathways. However, these simulations are run at relatively coarse resolutions, which do not accurately represent topography. Here, we perform regional simulations using the Weather Research and Forecasting (WRF) model to explore the sensitivity of present and future precipitation patterns across the central USA to the representation of the Rocky Mountains (RM). We …

We're Swarming Again! Swarming, Collectivity, And Trope: The Case Of Extinction Rebellion, Tyler J. Behymer

Department of Communication Studies: Dissertations, Theses, and Student Research

This thesis explores the rhetoric of the eco-movement Extinction Rebellion, focusing on the use of swarming and nature tropes to mobilize collective action and revivify contemporary notions of collectivity. Drawing on rhetoric of social movement scholarship, cultural studies, and psychoanalysis, this essay theorizes swarming as a tropological economy that expands the conditions of propriety in the context of collectivity. Through an analysis of Extinction Rebellion’s discourse, this study demonstrates how the naturalization of swarming tropes works in various ways to rewild conventional political discourse, galvanize disruptive collective assembly, and challenge green neoliberalism.

Advisor: Casey Ryan Kelly

Analyzing The Losses And Gains Of A Land Category: Insights From The Total Operating Characteristic, Thomas Mumuni Bilintoh, Robert Gilmore Pontius, Zhen Liu

Geography

This manuscript provides guidance concerning how to use the Total Operating Characteristic (TOC) when (1) analyzing change through time, (2) ranking a categorical independent variable, and (3) constraining the extent for a gaining category. The illustrative variable is the marsh land-cover category in the Plum Island Ecosystems of northeastern Massachusetts, USA. The data are an elevation map and maps showing the land categories of water, marsh, and upland in 1938, 1971, and 2013. There were losses and gains near the edge of the marsh between 1938 and 1972 and between 1972 and 2013. The TOC curves show that marsh gained …

Staying Fresh: Unconventional Approaches Towards Advancing Energy Sustainability, Water Resources, And Community Resiliency In The Southwestern United States, Judith Hoyt

Open Access Theses & Dissertations

This dissertation addresses critical challenges in urban heat management, sustainable energy resource utilization, and water quality communication through three studies. Study 1 investigates the impact of roof color on urban heat islands in Tucson, Arizona where approximately 70% of roofs display high albedo (i.e., light) colors. Energy consumption simulations conducted indicate that converting dark- to light-colored roofs could save Tucson approximately $1,400,000 annually in energy costs, highlighting the potential of cool roofs for energy savings and improved thermal comfort. Study 2 assesses the sources of lithium in subsurface waters in West Texas and South Central New Mexico. Water chemistry data …

A Study Of The Impact And Mitigation Strategies For Community-Defined Historic Places At Immediate (Within Three Decades) Risk Of Sea Level Rise, Isaac Quaye

All Theses

The rising sea level casts formidable threats on community-based historic places within coastal communities. These community-defined historic places derive their meaning from local values and are more recognized within the local community. Unlike recognized iconic historic places, these resources are confronted with inadequate resources to address the impacts of punctuated climate events. This study investigates the imminent threats posed by sea level rise (SLR) to community-defined historic places within the next three decades (2025) and explores mitigation strategies proposed by stakeholders. The study used a GIS-based (enhanced bathtub model) to model the impact of coastal inundation on three historic places …

A Comparison Of Maxent Models For Aedes Aegypti Species Distribution In South America Utilizing Different Bioclimatic And Environmental Variables, Matthew Beer

Electronic Theses and Dissertations

Aedes aegypti is the principal vector for dengue transmission across large areas of the world. Understanding where this critically important vector lives is paramount to preventing the continued expansion of dengue globally. Using 1981-2010 bioclimatic (bioclim) variables, as well as additional environmental variables and elevation data, multiple MaxEnt models were constructed for Ae. aegypti within the South American continent to identify ecologically important variables and areas of persistent high suitability. All models had acceptable AUC scores (> 0.70), indicating accurate model fitting. Annual mean precipitation and temperature were found to be important model variables; however, when added, humidity became the …

Drought As An Emergent Driver Of Ecological Transformation In The Twenty-First Century, Wynne E. Moss, Shelley D. Crausbay, Imtiaz Rangwala, Jay W. Wason, Clay Trauernicht, Camille S. Stevens-Rumann, Anna Sala, Caitlin M. Rottler, Gregory T. Pederson, Brian W. Miller, Dawn R. Magness, Jeremy S. Littell, Lee E. Frelich, Abby Frazier, Kimberly T. Davis, Jonathan D. Coop, Jennifer M. Cartwright, Robert K. Booth

Geography

Under climate change, ecosystems are experiencing novel drought regimes, often in combination with stressors that reduce resilience and amplify drought's impacts. Consequently, drought appears increasingly likely to push systems beyond important physiological and ecological thresholds, resulting in substantial changes in ecosystem characteristics persisting long after drought ends (i.e., ecological transformation). In the present article, we clarify how drought can lead to transformation across a wide variety of ecosystems including forests, woodlands, and grasslands. Specifically, we describe how climate change alters drought regimes and how this translates to impacts on plant population growth, either directly or through drought's interactions with factors …

Identifying Watershed And Climatic Factors That Influence Headwater Streams In The San Bernardino National Forest - A Framework For Adaptive Management And Conservation, Christine Sue Seeger

Electronic Theses, Projects, and Dissertations

Headwater streams play a significant role in overall watershed condition. These streams are critical freshwater resources and are imperative for human and ecosystem health. Seasonal variability in climate patterns is becoming increasingly more common as the effects of climate change are studied. The phenomenon known as “weather whiplash,” prolonged periods of drought followed by a sudden increase in precipitation, creates additional challenges for human and ecosystem conditions. Factors adversely impacting headwater streams include climate change, drought, wildfires, and human influence. While climate change continues to be studied, little is known about how weather whiplash patterns affect headwater streams in Southern …

Voices From The Countryside: Unveiling The Stories Of Rural Teachers In Stem Education, Devan A. Jones

All Dissertations

This narrative study delves into the overlooked perspective of rural communities within the broader educational landscape, highlighting their unique and vital role in education. It primarily aims to gain insights from K-8 teachers working in multigrade, multi-curricular Sustained Deep Rurality (SDR) schools situated in the challenging terrain of the Northern Rocky Mountain area. Employing a methodology centered around episodic narrative interviews and small story analysis, the study uncovers the intricacies and challenges inherent in teaching under the extreme conditions of rural environments.

These SDR schools, situated in remote and isolated regions, serve as vital pillars in rural education, embodying qualities …

Dengue And Climate Change: Assessing Potential Future Areas Of Concern For Transmission In The United States, Matthew Beer

Electronic Theses and Dissertations

Background: Global climate change severely impacts human life, particularly health, as rising temperatures and extreme weather affect physical and mental well-being. Climate change can also alter the risk factors and epidemiology of infectious diseases, notably vector-borne diseases (VBDs), including those transmitted by mosquitoes. The Aedes mosquito, responsible for dengue, poses a significant threat due to its prevalence vector. Dengue prevention lacks effective methods beyond vector control, and the current vaccine has limitations, emphasizing the need for intensified research and prevention strategies to mitigate the expanding dengue burden worldwide. The goal of these studies was to establish a novel risk index …

Integration Of Urban Climate Research Within The Global Climate Change Discourse, Negin Nazarian, Benjamin Bechtel, Gerald Mills, Melissa Anne Hart, Ariane Middel, E. Scott Krayenhoff, Gaby S. Langendijk, Lei Zhao, Andy Pitman, Winston T. L. Chow

Research Collection College of Integrative Studies

Global climate science needs to address a fundamental challenge: the mismatch between the scales of anthropogenic processes driving change and the resulting climate impacts. While projected climate changes and impacts are global in extent, the drivers of this change, and the exposure to its impacts, are concentrated in densely populated urban areas. Despite occupying only 1–3% of the land, urban areas are home to most of the world’s population and responsible for ~70% of current greenhouse gas emissions [1]. By 2050, an additional 2.5 billion people are expected to live in urban areas, with up to 90% of this growth …

Is This Home Truly? Reflections On Singapore As It Turns 59, Lily Kong

Research Collection School of Social Sciences

In a commentary, SMU President Professor Lily Kong shared her reflections on Singapore as it turns 59. She discussed Singapore's nation-building process and offered her views on how the country can strengthen its social compact to make Singapore a home for Singaporeans.

Introduction To The Special Issue

Midwest Social Sciences Journal

No abstract provided.

Mission And Editorial Policy

Midwest Social Sciences Journal

No abstract provided.

Volume 26, Issue 2 (Special Issue) -- Full Contents

Midwest Social Sciences Journal

No abstract provided.

Displacement, Social Justice, And The Right To The City: A Review And Critical Reflections In The 21st Century, Tara Fitzgerald, Brij Maharaj

Midwest Social Sciences Journal

This paper aims to review the literature and themes relating to displacement, social justice, and the right to the city in the 21st century. Displacement, in its various forms, is central to understanding the human rights abuses and livelihood implications when urban rights are revoked, forcing inhabitants to the periphery, and is the focus of this paper. Whereas the city’s services, resources, and opportunities should be a collective right advanced by local authorities for all who occupy urban space, displacements lead to resettlement and impoverishment, especially as livelihoods are disrupted. Urban renewal, through mega-projects, clean-up campaigns, and speculative gentrification processes, …

Economic Development In Legacy Cities: Current And Emerging Challenges And Opportunities, Neil Reid, Sujata Shetty, Jane Adade

Midwest Social Sciences Journal

As manufacturing employment has declined in the traditional manufacturing regions over the past decades, many communities have experienced population loss and overall economic decline. Local economic development professionals have had to grapple with long-term structural changes in the economy as well as short-term jolts. To gain insights into the changing landscape of economic development, we interviewed economic development practitioners in Indiana, Michigan, Ohio, and Pennsylvania. The interviews focused on their perception of current and emerging challenges and opportunities with respect to economic development in their respective communities. Having identified the major challenges and opportunities, we asked them to articulate the …

Author Biographical Notes

Midwest Social Sciences Journal

No abstract provided.

Notes On The Future Possibilities Of Engaged Anthropological Research: Why Decolonizing Anthropology Needs Black Diasporic Feminist Theory And Methodologies, Meryleen Mena

Midwest Social Sciences Journal

While in the past decade there have been more ethnographic accounts that shed light on minoritized stories and demystify the specific challenges that women and femmes experience during their research, much is desired to prepare students and junior scholars from marginalized identities for fieldwork research. Reflecting on a moment of precarity in the context of pre-impeachment São Paulo, I explain why the integration of Black diasporic feminist thought, method, and praxis is critical to further decolonizing efforts in anthropology. Beyond reflection, this narrative calls for sustained politically active engagement to establish an anthropology of liberation.

Guest Editor's Note, Rajiv Thakur

Midwest Social Sciences Journal

No abstract provided.