Geography Commons^™

Challenges Of Elephant Conservation: Insights From Oral Histories Of Colonialism And Landscape In Tsavo, Kenya, Peter Ngugi Kamau, Andrew Sluyter

Faculty Publications

No abstract provided.

Conceived Versus Lived Social Spaces And The Transformation Of The Morro Da Providência Favela Of Rio De Janeiro Since 2008, Jamie Worms, Andrew Sluyter

Faculty Publications

No abstract provided.

What The Walls Say: Finding Meaning And Value In Tel Aviv’S Street Art, Rachel R. Bird

Honors Theses

This thesis explores street art in Tel Aviv, Israel through anthropological concepts of value. By defining street art as an interstitial practice—one that exists between permeable, socially defined boundaries and is characterized differently by different power structures—I attempt to define some of the different regimes of value that apply to street art. Using the emerging market of “street art tours” as a fieldwork site, I look at how street art is presented and re-presented to both tourists and locals. By situating my research in a historical and geographic context, I hope to understand the ways different value schema, from economic …

Urban Gardens And Nutrition In Sioux Falls, Sd, Austin Brynjulson

Electronic Theses and Dissertations

With the global population recently surpassing seven and a half billion, questions about feeding the population have emerged. In the past, increased demand for food was addressed through increasing intensification of land use and increasing the area of land under cultivation. Despite these efforts, food insecurity has increased for much of the population over this period, where, according to the USDA, in the U.S. 49.1 million people were food insecure in 2013. Food insecurity in this regard is the lack of access to sufficient, safe, and nutritious food at all times. While the complex global food system may be difficult …

A Study Of African Savanna Vegetation Structure, Patterning, And Change, Christoffer R. Axelsson

Electronic Theses and Dissertations

African savannas cover roughly half of the continent, are home to a great diversity of wildlife, and provide ecosystem services to large populations. Savannas showcase a great diversity in vegetation structure, resulting from variation in climatic, edaphic, topographic, and biological factors. Fires play a large role as savannas are the most frequently burned ecosystems on Earth. To study how savanna vegetation structure shifts with environmental factors, it is necessary to gather site data covering the full gradient of climatic and edaphic conditions. Several earlier studies have used coarse resolution satellite remote sensing data to study variation in woody cover. These …

Mapping And Risk Assessment Of Juniper Encroachment Into A Prairie Landscape, Kyle D. Kaskie

Electronic Theses and Dissertations

Juniper encroachment is a considerable threat to the prairie ecosystems of the Great Plains because it has the potential to alter native grasslands by changing soil characteristics, limiting herbaceous biomass, and hindering native community regeneration. Accurate maps of juniper cover and predictions of areas at risk for future expansion are needed to support proactive management measures. Therefore, our objectives are to: (1) Develop a practical workflow for large-scale juniper mapping using Landsat 8 Operational Land Imager (OLI) imagery and partial unmixing techniques, (2) Compare the classification accuracies from the resulting map based on different juniper density thresholds and different types …

Noise Mapping Of An Educational Environment: A Case Study Of South Dakota State University, Sujan Parajuli

Electronic Theses and Dissertations

Sound is the subjective dimension of what we hear when vibrations reach our ears. Noise, or unwanted sound (mostly human caused), is an objective function of the pressure of those vibrations and is often measured using decibels (dB). Noise is a type of pollution that has both direct and indirect negative impacts on humans, with significant implications for public health plus social, economic, and environmental well-being. Mapping the acoustic landscape (i.e., soundscape) using noise and sound data provides important insights for evaluating, interpreting, understanding, and managing environmental noise. The objectives of this research are threefold; to map the spatial and …

The Origin Of Dark Mats At The Sunrise Ridge Borrow Pit Site (45pi408) Mount Rainier National Park, Washington, Sean Stcherbinine

All Master's Theses

The Sunrise Ridge Borrow Pit Site is a precontact archaeological site located in the upland forest soils of Mount Rainier National Park. Site stratigraphy is complicated, consisting of tephra deposits from mostly known origins that are intercalated with dark sediments of unknown origin, referred to here as dark mats. Precontact occupation has been split previously into two components based on the ambiguous depositional history of the dark mats, notably their unknown parent material, depositional environment, and relationship with adjacent tephra strata. Stratigraphic samples from excavation units, features, and one off-site excavation unit was used to investigate these data gaps. Grain …

Visual Variables On Mobile Devices : An Empirical Study Of Their Roles In Gaining Spatial Awareness, Andrew Donghyun Kim

Legacy Theses & Dissertations (2009 - 2024)

More people are used to and comfortable using mobile devices compared to traditional paper maps. Multiple studies have suggested that user's spatial awareness tends to decrease as the user passively follows directions on a mobile device with diminished screen size. One way to overcome the shortcoming of the small screen is through displaying discrete off-screen objects (landmarks) located beyond the extent of mobile map displays. The current study empirically examines the effectiveness of using visual variables including size, fuzziness, and transparency to embed distance and direction information in implicit icons of off-screen objects. This study investigates the effectiveness of these …

Fusing Satellite Data To Monitor The Urban Area's Effect On Plant Phenology, Norman Gervais

Legacy Theses & Dissertations (2009 - 2024)

This dissertation centrally focuses on developing and validating the use of fused satellite imagery to monitor the effects of the urban area on plant phenology, specifically the timing of the start and end of the growing season (SOS and EOS, respectively). In the first paper, Chapter 2, data from the Moderate Resolution Imaging Spectroradiometer (MODIS) and Landsat were fused together using the Spatial and Temporal Adaptive Reflectance Fusion Model (STARFM) to produce a time series of a high spatial and high temporal resolution vegetation index. From this time series, the SOS and EOS were extracted and compared between the urban …

Understanding Haitian Women’S Health Care In Immokalee, Florida, Usa, Michele Leigh Flippo Bolduc

Theses and Dissertations--Geography

This social science research project takes a critical approach to understanding the health of a population by using the health care system as an entry point through which we can see how large-scale social processes produce a particular health care landscape in the rural, im/migrant farmworker community of Immokalee, Florida, USA. Using a multi-scalar analysis of health care, I investigate how anti-immigrant legislation and neoliberal economics influence the experience of health care for health care providers and Haitian im/migrant women navigating these processes. First, I argue that anti-immigrant and pro-market discourses have been successful in limiting the accessibility to health …

Producing Tradition: International Standards And Development In Jordanian Olive Oil, Brittany Eleanor Cook

Theses and Dissertations--Geography

This dissertation project examines how value is changed and created through organic certification and the universalizing ideas of capacity building within the olive oil industry in Jordan and how these shifts affect the social and material processes of production. I approach organic olive oil production in Jordan as one method that producers use in accessing markets and capacity building. By shifting from looking strictly at organic certified farms to examining the larger context of capacity building and international standards, I identify how organic is just one strategy in a larger effort to diversify Jordanian agricultural production and to access global …

Accounting For Spatial Autocorrelation In Modeling The Distribution Of Water Quality Variables, Lorrayne Miralha

Theses and Dissertations--Geography

Several studies in hydrology have reported differences in outcomes between models in which spatial autocorrelation (SAC) is accounted for and those in which SAC is not. However, the capacity to predict the magnitude of such differences is still ambiguous. In this thesis, I hypothesized that SAC, inherently possessed by a response variable, influences spatial modeling outcomes. I selected ten watersheds in the USA and analyzed them to determine whether water quality variables with higher Moran’s I values undergo greater increases in the coefficient of determination (R²) and greater decreases in residual SAC (rSAC) after spatial modeling. I compared non-spatial ordinary …

Mapping Quality Of Life In Nebraska: Migration Rates, Aileen S. Garcia, Rodrigo Cantarero, Grant Daily, Maria Rosario T. De Guzman, Jeong-Kyun Choi, Soo-Young Hong, Sarah Taylor

Mapping Quality of Life in Nebraska

KEY POINTS AND IMPLICATIONS

Nebraska is a state that is not often viewed as affected significantly by mobility and migration. As a state, the net migration rate of 1.1 from 2015 to 2016 is fairly low compared to others like Florida (16.0) or Nevada (14.4). However, data from this report suggests that there is, in fact, substantial movement of people moving in and moving out; as well as pockets within the state where there is higher than average influx of both domestic and international migrants.

In general, migration trends in the state mirror national trends of “rural flight” where people …

Evaluating Long-Term Trends In Vegetation And Management Intensity, Tallgrass Prairie National Preserve 1995–2014, Sherry A. Leis, Lloyd W. Morrison

United States National Park Service: Publications

Abstract

Inventory and Monitoring Networks of the National Park Service are charged with collecting and reporting data related to the status and trends of key natural resources. We have analyzed a suite of grazing data from 1995- 2016, fire history data from 1998-2015, and vegetation community data from 2002-2014 to better understand trends as they relate to management strategies at the preserve over time. We found that cattle stocking rates declined and fires became less frequent over the latter half of the record. Similarly, bare ground declined, woody species increased slightly, and the floristic quality index was relatively stable with …

Vulnerability Of Protected Areas To Human Encroachment, Climate Change And Fire In The Fragmented Tropical Forests Of West Africa, Francis Kwabena Dwomoh

Electronic Theses and Dissertations

The Upper Guinean region of West Africa is home to some of the most globally significant tropical biodiversity hotspots, providing ecosystem services that are crucial for the region’s socio-economic and environmental wellbeing. Nonetheless, following decades of human-caused destruction of natural habitats, protected areas currently remain the only significant refugia of original vegetation relics in landscapes that are highly fragmented. Aside from having strong geographic variation in land use, climate, vegetation, and human population, the region has also experienced remarkable biophysical and socio-economic changes in recent decades. All these factors influence the fire regime and the vulnerability of forests within protected …

Quantification Of Understory Fuels In The Superior National Forest Using Lidar Data, Jeffrey R. Irwin

Electronic Theses and Dissertations

Fire is a natural part of the ecosystems in the Great Lakes region. Several factors including harvesting, insect outbreaks, and fire suppression have had an impact on these ecosystems. Of particular concern is the rise in the proportion of shade tolerant species, such as balsam fir. Because of its resinous bark and easily ignited needles, balsam fir is flammable. Additionally, balsam fir is vulnerable to spruce budworm infestation, which leads to additional fuel loading from needle cast. Detecting increases in fire risk is important to fire managers in Superior National Forest for many reasons. Determining the amount and extent of …

Biomass Burning In The Conterminous United States: A Comparison And Fusion Of Active Fire Observations From Polar-Orbiting And Geostationary Satellites For Emissions Estimation, Fangjun Li

Electronic Theses and Dissertations

Biomass burning is an important source of atmospheric greenhouse gases and aerosol emissions that significantly influence climate and air quality. Estimation of biomassburning emissions (BBE) has been limited to the conventional method in which parameters (i.e., burned area and fuel load) can be challenging to quantify accurately. Recent studies have demonstrated that the rate of biomass combustion is a linear function of fire radiative power (FRP), the instantaneous radiative energy released from actively burning fires, which provides a novel pathway to estimate BBE. To obtain accurate and timely BBE estimates for near real-time applications (i.e., air quality forecast), the satellite …

The Dmz Responds, Seo-Young J. Chu

Publications and Research

Seo-Young Chu’s “The DMZ Responds” appeared in Telos 184 (Fall 2018), a special issue on Korea edited by Haerin Shin.

Motives For Patenting A Map Projection: Did Fame Trump Fortune?, Mark Monmonier

Geography and the Environment - All Scholarship

John Parr Snyder claimed that patenting a map projection was largely pointless because essentially similar transformations are readily available in the public domain. Map projection patents are rare, many patentees did not attempt to develop their patents, and none who did seems to have made much money. An explanation for their decision to patent lies in recognition that the patent system and peer-reviewed scientific journals are parallel literatures, either of which can satisfy an innovator’s need for attention, as suggested by achievement motivation theory. Moreover, no single factor can account for the invention of a map projection that was patented: …

Fpga-Based On-Board Geometric Calibration For Linear Ccd Array Sensors, Guoqing Zhou, Linjun Jiang, Jingjin Huang, Rongting Zhang, Dequan Liu, Xiang Zhou, Oktay Baysal

Mechanical & Aerospace Engineering Faculty Publications

With increasing demands in real-time or near real-time remotely sensed imagery applications in such as military deployments, quick response to terrorist attacks and disaster rescue, the on-board geometric calibration problem has attracted the attention of many scientists in recent years. This paper presents an on-board geometric calibration method for linear CCD sensor arrays using FPGA chips. The proposed method mainly consists of four modules—Input Data, Coefficient Calculation, Adjustment Computation and Comparison—in which the parallel computations for building the observation equations and least squares adjustment, are implemented using FPGA chips, for which a decomposed matrix inversion method is presented. A Xilinx …

Superpixel-Based Hyperspectral Unmixing With Regional Segmentation, Mohammed Qassim Alkhatib

Open Access Theses & Dissertations

Unsupervised unmixing analysis aims to extract the basic materials, also known as, endmembers, and their fractions (or abundances) from a hyperspectral image. In this work, a new unsupervised unmixing approach based on Low Dimensional representation with regional analysis is developed. A low dimensional image representation is obtained using superpixel segmentation where each superpixel is represented by its mean spectra. Regional analysis is then performed using the quadtree segmentation based on the Shannon entropy. Endmembers are extracted from each region and combined using clustering into endmember classes. The proposed approach is tested and validated using the HyDICE Urban, ROSIS Pavia, and …

Geometry, Timing, And Kinematics Of Neogene Extensional And Transtensional Structures Of Southern Death Valley: Implications For Regional Reconstructions And A Corrective Method For Rigid Body Rotations, Zachariah Fleming

Open Access Theses & Dissertations

Chapter 1:Advancements in computing capabilities over the last decade have allowed for the routine creation of Structure from Motion-Multiview Stereo (SfM-MVS) terrain models that can serve as base for high resolution geologic mapping. Outcrops models developed from these systems are high-resolution, photo-realistic 3D base providing unprecedented capability for geometric analysis. Yet, before this technology becomes a mainstay of field geology, the potential errors associated with it must be well understood. Here, we compare orientation measurements from multi-point analyses on the SfM-MVS point clouds to those taken in the field with the objective of resolving the geometry of complex folds within …

A Cartographic Workflow Manual For Endangered Species Conservation, Martin P. Viereckl

Graduate Student Theses, Dissertations, & Professional Papers

In response to global consumer demand for rare and exotic wildlife products, poaching of endangered species has become pervasive around the world (Eliason 1999). Despite the enactment of CITES, and other international efforts to protect vulnerable species from overexploitation, the global market for illegal wildlife products is estimated as high as $20-billion a year industry (Wyler 2008). Within important wildlife habitat sites, law enforcement struggle to curb rampant poaching that threatens the ultimate survival of many endangered species (Jachmann 2008; Rowcliffe 2004). Law-enforcement agencies responsible for protecting wildlife from poachers often lack geospatial tools that could greatly improve the effectiveness …

Assessing Historical Planform Channel Change In An Altered Watershed With Quantification Of Error And Uncertainty Present In A Gis/Aerial Photography-Based Analysis; Case Study: Minnesota River, Minnesota, Usa., Devon Libby

All Graduate Theses, Dissertations, and Other Capstone Projects

Little is known about the historic planform channel change of the Minnesota River of south-central Minnesota, USA. This is despite research that demonstrates anthropogenic activities have altered the Minnesota River Basin's hydrology, land use, and climate. In addition, the threat of invasive carp infestation requires an understanding of Minnesota River planform change to assess mitigation strategies. This thesis focuses on the lower Minnesota River (LMR) by measuring planform channel change (lateral channel migration, width, and sinuosity) from 1937 to 2013. Analysis is conducted by utilizing remote/GIS analysis of historic aerial photographs. A secondary focus addresses and quantifies the inherent/introduced error/uncertainly …

Modeling And Mapping Location-Dependent Human Appearance, Zachary Bessinger

Theses and Dissertations--Computer Science

Human appearance is highly variable and depends on individual preferences, such as fashion, facial expression, and makeup. These preferences depend on many factors including a person's sense of style, what they are doing, and the weather. These factors, in turn, are dependent upon geographic location and time. In our work, we build computational models to learn the relationship between human appearance, geographic location, and time. The primary contributions are a framework for collecting and processing geotagged imagery of people, a large dataset collected by our framework, and several generative and discriminative models that use our dataset to learn the relationship …

“I Thought I Found Home”: Locating The Hidden And Symbolic Spaces Of African American Lesbian Belonging, Aretina Rochelle Hamilton

Theses and Dissertations--Geography

This dissertation investigates the place-making practices of African American lesbians in Atlanta, Georgia, from 1990 to 2010. For this project, I ask how African American lesbians claim space to examine how race, sexuality, and class shape their place-making practices. The study is situated in the city before and following the 1996 Olympic Games, which was a period of rapid social, economic, and political growth.

The primary question posed in this study is as follows: How do African American lesbians claim space in Atlanta? This dissertation posits three arguments. First, African American queer spaces are transitory, reflecting the shrinking boundaries of …

“Beyond Sisterhood There Is Still Racism, Colonialism And Imperialism!” Negotiating Gender, Ethnicity And Power In Madagascar Mangrove Conservation, Manon Lefèvre

Theses and Dissertations--Geography

Understanding women’s experiences of mangrove forest conservation in the Global South is important because mangrove forests are a crucial defense against climate change, and are also increasingly the targets of global climate change policies. The intervention of postcolonial feminist theory combined with feminist political ecology has the potential to bring forward women’s seldom-heard experiences of climate change in these valuable ecosystems. This work supports previous feminist political ecology scholarship focused on understanding women’s complicated relationships to the environment and the gendered effects of climate change policies, while challenging dominant conservation discourse around women as a monolithic group. This thesis focuses …

Catastrophic Futures, Robby Hardesty

Theses and Dissertations--Geography

By means of a peculiar magic, insurance preserves the quantified value of capital through destructive, contingent events. The principal subjects of this project, global reinsurers, stand at the end of a long line of loss claims, holding capital together as forces threaten to tear it apart. The apocalyptic imaginaries of climate change portend events that will be increasingly destructive to capital, and insurers counter with new products and narratives. In examining reinsurers and the catastrophes they protect against, this project questions how novelty emerges from the eternal return of the same. I show how power is inscribed in the landscape, …

“One More Way To Sell New Orleans”: Airbnb And The Commodification Of Authenticity Through Local Emotional Labor, Ian Spangler

Theses and Dissertations--Geography

Since 2014, Airbnb has been the poster-child for an impassioned debate over how to best regulate short-term home rentals (STR’s) in New Orleans, Louisiana. As critical perspectives toward on-demand economic practice become increasingly common, it is important to understand how the impacts of STR platforms like Airbnb extend beyond the realm of what is traditionally conceptualized as the economic (i.e., pressure on housing markets). In this thesis, I explore the ways in which Airbnb recalibrates the spatial and temporal rhythms of everyday neighborhood life for people external to the formal trappings of an STR contract. Drawing in particular on theories …