Geographic Information Sciences Commons^™

Understanding Changes To Human Mobility Patterns In Ontario, Canada During The Covid-19 Pandemic, Ben Klar

Electronic Thesis and Dissertation Repository

Transportation research has shown that socio-demographic factors affect people’s mobility patterns. During the COVID-19 pandemic, some of these effects have changed in accordance with changing mobility needs adapting to the pandemic, including restrictions on in-person gatherings, closure of in-person businesses and working from home. We investigate two gaps in current knowledge in this area of transportation research: to what extent the association between socio-demographic factors and mobility metrics have changed, and how these associations vary across geographic space. We also investigate how closely Ontario’s Public Health Unit boundaries, based on which pandemic restrictions were applied, reflect actual travel regions, and …

Uni·Cen Documentation Report 4: Early Postwar Census Tract Digitization Project, Zack Taylor, Christopher Macdonald Hewitt

UNI-CEN documentation

The Unified Infrastructure for Canadian Census Research, or UNI·CEN, is a comprehensive database of historical and contemporary Canadian aggregate Census data, digital boundary files, and ancillary material, all provided in modern data formats. The goal of the project is to liberate Canadian Census data so that it can be easily used by academic researchers, students, and the public.

The documentation describes the processes used to digitize the 1951, 1956, 1961, and 1966 Census Tract boundaries and associated datasets.

For more information, visit: https://observatory.uwo.ca/unicen/

To access the data, visit: https://borealisdata.ca/dataverse/unicen

Uni·Cen Documentation Report 3: Digital Boundary Files, Zack Taylor, Christopher Macdonald Hewitt

UNI-CEN documentation

The Unified Infrastructure for Canadian Census Research, or UNI·CEN, is a comprehensive database of historical and contemporary Canadian aggregate Census data, digital boundary files, and ancillary material, all provided in modern data formats. The goal of the project is to liberate Canadian Census data so that it can be easily used by academic researchers, students, and the public.

The UNI·CEN Digital Boundary Files series contains versions of all publicly available digital boundary files with shorelines harmonized, at five levels of Census geography.

For more information, visit: https://observatory.uwo.ca/unicen/

To access the data, visit: https://borealisdata.ca/dataverse/unicen

Multi-Decadal Analysis Of Remotely Sensed Vegetation Change In Berea College Forest - Seasonality Of Forest Patterns Using Remote Sensing, Jacob Foushee

The Cardinal Edge

Satellite imagery is a practical and valuable tool for monitoring vegetation condition in forests. The longevity of the USGS/NASA Landsat program along with its medium spatial resolution (30m) gives researchers the ability to make informed statements on land cover generally, and specifically on aspects such as forest conditions. The Landsat program’s nearly 50-year archive of imagery show how Earth’s surface has changed through modern development and how these developments have influenced forests. Google Earth Engine (GEE) is a cloud-based repository of satellite imagery dating as far back as the 1970s. This study utilizes Landsat 5-8 imagery from GEE to calculate …

Expulsive Greening: A Cross-Sectional Analysis Of Green Gentrification In The Resilience Paradigm, Brooklyn 2010–2020, Rose Jimenez

Dissertations, Theses, and Capstone Projects

Background: This project analyzes the spatial coincidence between gentrification typologies and urban greening in Brooklyn, New York from 2010 to 2020. Assets formed under the NYC Green Infrastructure Program were chosen as a proxy for urban greening to represent the spatial practice specifically within the 21st-century climate change resilience paradigm of development. Methods: First, five indexes measuring variations of economic and demographic conditions related to gentrification were applied to Brooklyn for comparative analysis: NOAA’s Social Vulnerability Indicators of Gentrification Pressure, The NYC Heat Vulnerability Index, The Small Area Index of Gentrification, Typologies of Gentrification and Displacement, and The Housing Risk …

Acid Mine Drainage In The Shamokin Creek Watershed: A Spatial Analysis Of Economic And Environmental Consequences Of Coal Mining, Ben Shimer

Student Project Reports

No abstract provided.

Centers Of Community: A Spatial Analysis Of The Mid-19th Century Populaton Residing On Beacon Hill, Boston, Ma, Justin Malcolm

Graduate Masters Theses

The first Black church constructed in Boston, and the oldest extant Black church building in America, the African Meeting House was located on the North Slope of Beacon Hill; the predominant residence of Boston’s Black population during the nineteenth century. The African Meeting House has been the subject of several important archaeological investigations. In 1840, a schism within the African Meeting House congregation resulted in the establishment of the Twelfth Baptist Church. Historical contexts suggest that this neighborhood was highly segregated. A geographic and statistical analysis of the unique 1850 Boston City Census, which was made to yield spatial contexts …

Measuring The Morphologic Response Of Braided Rivers To Lateral Constriction, Victoria Barlow

Electronic Thesis and Dissertation Repository

The aim of this thesis is to understand the morphologic changes to a set of historically braided rivers that have been narrowed. Braided rivers from the agriculturally developed Canterbury Plains, New Zealand, were studied from a period prior to much development (mid-1900s) to the present. Narrowing of channels, decreased braiding intensity, and loss of braided planforms were determined based on aerial imagery, changing the geography of braiding along all rivers. Channel width and count were statistically correlated and show the predictability of braiding change based on narrowing. Reaches with initially wide channels require more narrowing to induce a simplification of …

“I Think I Discovered A Military Base In The Middle Of The Ocean”—Null Island, The Most Real Of Fictional Places, Levente Juhasz, Peter Mooney

GIS Center

This paper explores Null Island, a fictional place located at 0° latitude and 0° longitude in the WGS84 (World Geodetic System 1984) geographic coordinate system. Null Island is erroneously associated with large amounts of geographic data in a wide variety of location-based services, place databases, social media and web-based maps. Whereas it was originally considered a joke within the geospatial community, this article will demonstrate implications of its existence, both technological and social in nature, promoting Null Island as a fundamental issue of geographic information that requires more widespread awareness. The article summarizes error sources that lead to data being …

Null Island - A Node Of Contention In Openstreetmap, Peter Mooney, Levente Juhasz

GIS Center

No abstract provided.

Measuring The Exposure And Vulnerability Of Transit Riders To Cold Temperatures In London, Ontario, Armin Mahboubi

Undergraduate Student Research Internships Conference

Due to the expansion of suburban areas in many cities around the world, accessibility to public transit through walking has become a new challenge for riders. Considering the impacts of climate change in creating more extreme weather, such as extreme cold, heat, or flooding, transit riders may thus be at a higher risk of exposure for various weather-related illnesses (Fraser & Chester, 2016).

Using ArcGIS Pro and ArcMap software, and data collected from City of London’s Open Portal, the United States Geological Survey, Open Mobility Data, and Statistics Canada, the exposure and vulnerability of transit riders to cold temperatures in …

Temporal Variability Of Public Transit Supply-Demand Gaps In London, On, Canada, William Yang

Undergraduate Student Research Internships Conference

This study looks at early morning hourly public transit use in London, Ontario, from 5:00 AM to 8:59 AM and measures the transit gaps between supply and demand at each hour to identify not only areas of oversupply or undersupply but how their occurrence and positions develop over a temporal scale.

Quantifying Spatial Heterogeneity Of Wild Blueberries And Crop Water Stress Monitoring Using Remote Sensing Technologies, Kallol Barai

Electronic Theses and Dissertations

The wild blueberry is one of the major crops of Maine, with significant economic value and potential health benefits. Due to global climate change, drought impacts have been increasing significantly in recent years in the northeast region of the USA, causing significant economic losses in the agricultural sectors. It has been predicted to increase further in the future. Changing patterns of the elevated atmospheric temperatures, increased rainfall variabilities, and more frequent drought events have made the wild blueberry industry of Maine vulnerable, suggesting the adoption of novel approaches to mitigate the negative impacts of global climate changes. Also, wild blueberry …

A Decade Review Of Disease Surveillance Research Trends In The International Journal Of Health Geographics (2009 To 2018), Rose Jimenez, Paradorn Wongchanapai

Publications and Research

The field of health geographics is rapidly growing in its methods and epistemologies. This is a review of the open-source journal International Journal of Health Geographics, and the trends in disease surveillance over ten years (2009-2018). Drawing from research review methodologies, we wrote a Python script to quantify research trends within the field of geographic disease surveillance, finding many articles focusing on population health, techniques of GIS, qualitative techniques, and geospatial technology for health monitoring. This was foundational in conducting an in-depth qualitative lexical analysis of article content and epistemologies. Overall, we concluded that over the time period, the …

An Integrated Gis & Flood Vulnerability Index Approach To Evaluating Risk & Environmental Equity In Urban Karst Communities, Chloe Cooper

Masters Theses & Specialist Projects

This study examines how the usage of an integrated GIS (Geographic Information Systems), flood vulnerability assessment, and management approaches can aid in hazard response planning in karst groundwater systems, particularly in urban environments. In order to also better understand the impacts of flood events on socially vulnerable groups, this research was focused on historically excluded communities. Additionally, place-based vulnerabilities were primarily assessed based upon three main factors in the vulnerability framework and how these components intersect: social, environmental conditions, and economic. By understanding which areas of the City of Bowling Green, an iconic urban karst area, are most vulnerable and …

Crime Attractors In Sin City? A Pre/Post Test Of Crime Patterns And Police Enforcement Around Recreational Marijuana Facilities, Joshua Donnelly

UNLV Theses, Dissertations, Professional Papers, and Capstones

The federalist system in the United States has created criminal opportunities within jurisdictions that have approved recreational marijuana facilities (RMFs). These facilities have characteristics that are attractive for motivated offenders including marijuana and marijuana-related tangible goods. Through ArcGIS, this research examined the crime patterns and police enforcement patterns that occurred within a 288-meter street-network buffer around RMFs through a pre/post-test exploratory design in the Las Vegas area. The time periods examined were 2015 to 2016 (pre-legalization), and 2018 to 2019 (post-legalization). Calls for service data were used to demonstrate both crime and enforcement patterns. Furthermore, facilities were classified into “local …

Changes Of Winter Severity In Arkansas During 1901-2100, Christian Garcia

Graduate Theses and Dissertations

The objective of this study was to quantify the winter severity in a way that was reproduceable and easy to understand. The Accumulated Winter Severity Seasonal Index (AWSSI) was chosen for this reason and was used to quantify winter severity by season across the state of Arkansas. The variables that go into the AWSSI calculation are maximum daily temperature, minimum daily temperature, daily snowfall, and daily snow depth. When the snowfall and snow depth were missing, they can be estimated using daily temperature and precipitation. Then the estimated snowfall and snow depth can be subsequently used to quantify the winter …

Covid-19 Renters And Housing Instability: Combatting The Eviction Epidemic During The Covid-19 Pandemic In Knox County, Tennessee, Samantha B. Myers-Miller

Masters Theses

COVID-19 has exacerbated preexisting inequities in Knox County, Tennessee. The disruption to employment caused by the pandemic has imposed a great financial burden for many individuals who rent housing. The primary relief that was afforded to renters during the pandemic was enabled by a federal eviction moratorium order, where covered renters could defer payments to avoid eviction while the moratorium was in effect. Some additional rental assistance was provided to local governments through the federal CARES Act pandemic relief package. Despite these provisions, many people experienced housing crises in Knox County, where over 3,000 renters have faced eviction filing from …

Creating A Public Space For Georeferencing Sanborn Maps: A Louisiana Case Study, Adam Cox

LSU Master's Theses

As institutional archives digitize their historical map collections and make them publicly available online, new methods for engaging with these materials emerge. Georeferencing the maps transforms their content from static images to dynamic map overlays, and allows for the extraction of geographic data like building footprints or place name coordinates. Many organizations have turned to crowdsourcing to georeference their large holdings, and this thesis approaches crowdsourced georeferencing from the perspective of participatory heritage, taking much inspiration from the idea of the archival commons. To test these ideas, a new extension was created for GeoNode—an open source geospatial content management system—that …

A Gis Suitability Model Evaluating Habitat Characteristics Influencing Beaver (Castor Canadensis) Lodge Site Selection And Lodge Occupancy In Central Adirondacks, New York, Amanda K. Jacobs

Theses - ALL

The North American beaver (Castor canadensis) represents a quintessential example of an "ecosystem engineer." Yet the species' landscape-scale impacts on hydrology, geomorphology, and ecosystem ecology are not uniformly distributed through landscapes or time. Understanding beaver lodge site selection and lodge fidelity through time can help to predict where the greatest effects of beaver activity may occur. In this research project, I seek to understand the relationships between beaver habitat suitability, the habitat variables that currently define suitable areas, and lodge occupancy over time. Using Geographic Information Systems (GIS) to model habitat suitability, I use hydrologic, vegetative, and physiographic variables to …