Ashton Shortridge
Biographic Data
| ID | 1573127 |
|---|---|
| NAME | Ashton Shortridge |
| GIVEN NAMES | Ashton |
| FAMILY NAME | Shortridge |
| SIGNATURE | SHORTRIDGE A |
| AFFILIATIONS | Michigan State University |
| ORCID | 0000-0002-5785-0204 |
| VERIFIED | Yes |
| TOTAL WORKS | 24 |
| TOTAL CITATIONS | 60 |
| WORKS AS AUTHOR | 24 |
| WORKS AS EDITOR | 0 |
| FIRST PUBLICATION YEAR | 2005 |
| LATEST PUBLICATION YEAR | 2025 |
| H-INDEX | 3 |
Schoolyard Level Inventory for Describing the Environment
BACKGROUND: Schoolyards and/or playgrounds are important settings for fostering children's social, cognitive, and physical development. Optimal schoolyard design is likely an important health-promoting and equigenic strategy, but prior research does not fully consider multiple dimensions of these spaces, such as vegetation, slopes, ground cover, and equipment. AIMS: We describe the Schoolyard Level Inventory for Describing the Environment (SLIDE)…
The Voice Unheard
BACKGROUND: Eleven years have passed since the 2014 Flint water crisis (FWC), yet many voices still go unheard. There is limited evidence of the impact of the FWC on maternal health. This paper used a cross-sectional study design to survey 152 women enrolled in the Supporting Parents and Raising Resilient Kids (SPARRK) study in Flint, Michigan to examine racial differences in women's perceptions of their overall health pre- and post-FWC, perceive…
Beauty is in the eye of the beholder
Comparison of ten policy options to equitably reduce children’s exposure to unhealthy food marketing
Objective: Reducing children’s exposure to unhealthy food marketing is crucial to combat childhood obesity. We aimed to estimate the reduction of children’s exposure to food marketing under different policy scenarios and assess exposure differences by socio-economic status. Design: Data on children’s exposure to unhealthy food marketing were compiled from a previous cross-sectional study in which children ( n 168) wore wearable cameras and Global…
Vertical vs. Horizontal Fractal Dimensions of Roads in Relation to Relief Characteristics
This paper investigated the surface length of roads from both horizontal and vertical perspectives using the theory of fractal dimension of surfaces and curves. Three progressive experiments were conducted. The first demonstrated the magnitude of the differences between the planar road length and the DTM-derived surface road length and assessed its correlation with the DTM-calculated road slope. The second investigated the road distance complexit…
Environmental crisis or an act of contemporary racism? A flint effect on maternal health disparities
Background Racial injustices, both within the social and environmental aspect, are increasingly in national discussions due to impacts from the COVID-19 pandemic and persistent violence perpetrated by police against Black civilians that resulted in tragic deaths. An ongoing environmental injustice that began in 2014 is the Flint Water Crisis (FWC). The purpose of this study is to conduct a quasi-experimental research design to compare Flint to a …
The Advancing Geography Through Diversity Program
Domestic racial and ethnic minorities have been persistently underrepresented in U.S. geography doctoral programs. Efforts to improve diversity have taken many forms over the years, but most have been short-lived with limited success. In this article, we introduce the Advancing Geography Through Diversity Program (AGTDP), a four-pronged cohort-based model that systematically and sustainably increases the presence of African Americans, Hispanic Am…
Exploring Persistent Racial and Ethnic Representation Disparity in U.S. Geography Doctoral Programs
Underrepresentation among U.S. citizen racial and ethnic minorities in geography has a long history, one perpetuated through-and readily measurable by-its doctoral degree-granting record. This article examines the history of efforts to redress underrepresentation since the 1960s, explores modern underrepresentation, measures the degree of its persistence in the discipline and within individual departments, and identifies drivers that exacerbate t…
The distribution of harmful product marketing in public outdoor spaces and the effectiveness of marketing bans
Flooded with Error
Digital elevation data are essential to estimate coastal vulnerability to flooding due to sea-level rise. Shuttle Radar Topography Mission (SRTM) 1 arc-second global is considered the best free global digital elevation data set available. Inundation estimates from SRTM, however, are subject to uncertainty due to inaccuracies in the elevation data. Small systematic errors in low, flat areas can generate large errors in inundation models, and SRTM …
Sentiment mapping
Detecting and monitoring collective public opinion via social media platforms can provide real-time information to researchers and policymakers. Human emotions, culture, and opinions can be tracked over time to understand where different sentiments manifest themselves geographically. Expanding on existing methodology, the present study draws from sentiment analysis and point pattern analysis to categorize and analyze sentiment toward natural gas …
Causes and consequences of environmental degradation along the Shatt Al–Arab River
Systematic review of the use of Google Street View in health research
How do modern transportation projects impact on development of impervious surfaces via new urban area and urban intensification? Evidence from Hangzhou Bay Bridge, China
Validity and Verification
Validity and verification (V&V) are important concerns in the practice of science: they encompass approaches to determine the fidelity of data and models. This entry provides an overview of their use, with illustrative approaches, metrics, and examples, for both spatial data and spatial computational modeling. In both cases validation generally considers the degree to which data or model outputs reflect reality, while verification concerns the de…
Modeling Uncertainty in Digital Elevation Models
While digital elevation models (DEMs) are widely used to represent the earth's terrain, they are not free from error. Data errors in DEMs are likely to affect any application that uses them: a critical question is, by how much? This entry considers the nature and sources of error in digital elevation data. It describes statistical models that have been used to characterize elevation error distributions as random fields. These error models are cou…
Spatial Point Pattern Analysis of Human Settlements and Geographical Associations in Eastern Coastal China — A Case Study
Understanding the spatial point pattern of human settlements and their geographical associations are important for understanding the drivers of land use and land cover change and the relationship between environmental and ecological processes on one hand and cultures and lifestyles on the other. In this study, a Geographic Information System (GIS) approach, Ripley's K function and Monte Carlo simulation were used to investigate human settlement p…
Implications of land use policy on impervious surface cover change in Cixi County, Zhejiang Province, China
Spatial Assessment of Attitudes Toward Tigers in Nepal
Assessing the Effectiveness of Payments for Ecosystem Services
Chen, X., A. Viña, A. Shortridge, L. An, and J. Liu. 2014. Assessing the effectiveness of payments for ecosystem services: an agent-based modeling approach. Ecology and Society 19(1): 7. https://doi.org/10.5751/ES-05578-190107
Pastoral Herd Management, Drought Coping Strategies, and Cattle Mobility in Southern Kenya
Livestock mobility facilitates opportunistic grazing management strategies that pastoralists employ to counter environmental variability in rangelands. One such strategy is moving livestock to temporary camps that are closer to areas of underutilized forage during times of drought. In areas where pastoralists graze near large protected areas, movement into protected areas, where both forage quantity and quality are higher, is also a common strate…
Shuttle Radar Topography Mission Elevation Data Error and Its Relationship to Land Cover
The Shuttle Radar Topography Mission (SRTM) has resulted in the construction of the first publicly available near-global high resolution digital elevation model (DEM). The utility of this DEM, as for any geospatial data set, is a function of its quality. This paper is concerned with the assessment of SRTM accuracy and its relationship to land cover. Two methods—one raster-based and one point-based—are compared to match "finished" three-arc-second…
Lidar Elevation Data for Surface Hydrologic Modeling
This paper is concerned with the application of high spatial resolution elevation data derived from light detection and ranging technologies (lidar) to surface hydrologic modeling. In recent years, airborne lidar technology has been employed to develop high accuracy digital elevation models (DEMs) with horizontal resolution on the order of a few meters. As with any spatial data product there are limits to the lidar's practical use that vary with …
Exploring Complexity in a Human–Environment System
Traditional approaches to studying human–environment interactions often ignore individual-level information, do not account for complexities, or fail to integrate cross-scale or cross-discipline data and methods, thus, in many situations, resulting in a great loss in predictive or explanatory power. This article reports on the development, implementation, validation, and results of an agent-based spatial model that addresses such issues. Using da…
Exploring Complexity in a Human–Environment System
Traditional approaches to studying human–environment interactions often ignore individual-level information, do not account for complexities, or fail to integrate cross-scale or cross-discipline data and methods, thus, in many situations, resulting in a great loss in predictive or explanatory power. This article reports on the development, implementation, validation, and results of an agent-based spatial model that addresses such issues. Using da…
Pastoral Herd Management, Drought Coping Strategies, and Cattle Mobility in Southern Kenya
Livestock mobility facilitates opportunistic grazing management strategies that pastoralists employ to counter environmental variability in rangelands. One such strategy is moving livestock to temporary camps that are closer to areas of underutilized forage during times of drought. In areas where pastoralists graze near large protected areas, movement into protected areas, where both forage quantity and quality are higher, is also a common strate…
Spatial Assessment of Attitudes Toward Tigers in Nepal
Assessing the Effectiveness of Payments for Ecosystem Services
Chen, X., A. Viña, A. Shortridge, L. An, and J. Liu. 2014. Assessing the effectiveness of payments for ecosystem services: an agent-based modeling approach. Ecology and Society 19(1): 7. https://doi.org/10.5751/ES-05578-190107
Sentiment mapping
Detecting and monitoring collective public opinion via social media platforms can provide real-time information to researchers and policymakers. Human emotions, culture, and opinions can be tracked over time to understand where different sentiments manifest themselves geographically. Expanding on existing methodology, the present study draws from sentiment analysis and point pattern analysis to categorize and analyze sentiment toward natural gas …
How do modern transportation projects impact on development of impervious surfaces via new urban area and urban intensification? Evidence from Hangzhou Bay Bridge, China
Implications of land use policy on impervious surface cover change in Cixi County, Zhejiang Province, China
Environmental crisis or an act of contemporary racism? A flint effect on maternal health disparities
Background Racial injustices, both within the social and environmental aspect, are increasingly in national discussions due to impacts from the COVID-19 pandemic and persistent violence perpetrated by police against Black civilians that resulted in tragic deaths. An ongoing environmental injustice that began in 2014 is the Flint Water Crisis (FWC). The purpose of this study is to conduct a quasi-experimental research design to compare Flint to a …
Shuttle Radar Topography Mission Elevation Data Error and Its Relationship to Land Cover
The Shuttle Radar Topography Mission (SRTM) has resulted in the construction of the first publicly available near-global high resolution digital elevation model (DEM). The utility of this DEM, as for any geospatial data set, is a function of its quality. This paper is concerned with the assessment of SRTM accuracy and its relationship to land cover. Two methods—one raster-based and one point-based—are compared to match "finished" three-arc-second…
Lidar Elevation Data for Surface Hydrologic Modeling
This paper is concerned with the application of high spatial resolution elevation data derived from light detection and ranging technologies (lidar) to surface hydrologic modeling. In recent years, airborne lidar technology has been employed to develop high accuracy digital elevation models (DEMs) with horizontal resolution on the order of a few meters. As with any spatial data product there are limits to the lidar's practical use that vary with …
Lidar Elevation Data for Surface Hydrologic Modeling
This paper is concerned with the application of high spatial resolution elevation data derived from light detection and ranging technologies (lidar) to surface hydrologic modeling. In recent years, airborne lidar technology has been employed to develop high accuracy digital elevation models (DEMs) with horizontal resolution on the order of a few meters. As with any spatial data product there are limits to the lidar's practical use that vary with …
Exploring Complexity in a Human–Environment System
Traditional approaches to studying human–environment interactions often ignore individual-level information, do not account for complexities, or fail to integrate cross-scale or cross-discipline data and methods, thus, in many situations, resulting in a great loss in predictive or explanatory power. This article reports on the development, implementation, validation, and results of an agent-based spatial model that addresses such issues. Using da…
Shuttle Radar Topography Mission Elevation Data Error and Its Relationship to Land Cover
The Shuttle Radar Topography Mission (SRTM) has resulted in the construction of the first publicly available near-global high resolution digital elevation model (DEM). The utility of this DEM, as for any geospatial data set, is a function of its quality. This paper is concerned with the assessment of SRTM accuracy and its relationship to land cover. Two methods—one raster-based and one point-based—are compared to match "finished" three-arc-second…
Pastoral Herd Management, Drought Coping Strategies, and Cattle Mobility in Southern Kenya
Livestock mobility facilitates opportunistic grazing management strategies that pastoralists employ to counter environmental variability in rangelands. One such strategy is moving livestock to temporary camps that are closer to areas of underutilized forage during times of drought. In areas where pastoralists graze near large protected areas, movement into protected areas, where both forage quantity and quality are higher, is also a common strate…
Spatial Point Pattern Analysis of Human Settlements and Geographical Associations in Eastern Coastal China — A Case Study
Understanding the spatial point pattern of human settlements and their geographical associations are important for understanding the drivers of land use and land cover change and the relationship between environmental and ecological processes on one hand and cultures and lifestyles on the other. In this study, a Geographic Information System (GIS) approach, Ripley's K function and Monte Carlo simulation were used to investigate human settlement p…
Implications of land use policy on impervious surface cover change in Cixi County, Zhejiang Province, China
Spatial Assessment of Attitudes Toward Tigers in Nepal
Assessing the Effectiveness of Payments for Ecosystem Services
Chen, X., A. Viña, A. Shortridge, L. An, and J. Liu. 2014. Assessing the effectiveness of payments for ecosystem services: an agent-based modeling approach. Ecology and Society 19(1): 7. https://doi.org/10.5751/ES-05578-190107
Validity and Verification
Validity and verification (V&V) are important concerns in the practice of science: they encompass approaches to determine the fidelity of data and models. This entry provides an overview of their use, with illustrative approaches, metrics, and examples, for both spatial data and spatial computational modeling. In both cases validation generally considers the degree to which data or model outputs reflect reality, while verification concerns the de…
Modeling Uncertainty in Digital Elevation Models
While digital elevation models (DEMs) are widely used to represent the earth's terrain, they are not free from error. Data errors in DEMs are likely to affect any application that uses them: a critical question is, by how much? This entry considers the nature and sources of error in digital elevation data. It describes statistical models that have been used to characterize elevation error distributions as random fields. These error models are cou…
Systematic review of the use of Google Street View in health research
How do modern transportation projects impact on development of impervious surfaces via new urban area and urban intensification? Evidence from Hangzhou Bay Bridge, China
Causes and consequences of environmental degradation along the Shatt Al–Arab River
Flooded with Error
Digital elevation data are essential to estimate coastal vulnerability to flooding due to sea-level rise. Shuttle Radar Topography Mission (SRTM) 1 arc-second global is considered the best free global digital elevation data set available. Inundation estimates from SRTM, however, are subject to uncertainty due to inaccuracies in the elevation data. Small systematic errors in low, flat areas can generate large errors in inundation models, and SRTM …
Sentiment mapping
Detecting and monitoring collective public opinion via social media platforms can provide real-time information to researchers and policymakers. Human emotions, culture, and opinions can be tracked over time to understand where different sentiments manifest themselves geographically. Expanding on existing methodology, the present study draws from sentiment analysis and point pattern analysis to categorize and analyze sentiment toward natural gas …
The Advancing Geography Through Diversity Program
Domestic racial and ethnic minorities have been persistently underrepresented in U.S. geography doctoral programs. Efforts to improve diversity have taken many forms over the years, but most have been short-lived with limited success. In this article, we introduce the Advancing Geography Through Diversity Program (AGTDP), a four-pronged cohort-based model that systematically and sustainably increases the presence of African Americans, Hispanic Am…
Exploring Persistent Racial and Ethnic Representation Disparity in U.S. Geography Doctoral Programs
Underrepresentation among U.S. citizen racial and ethnic minorities in geography has a long history, one perpetuated through-and readily measurable by-its doctoral degree-granting record. This article examines the history of efforts to redress underrepresentation since the 1960s, explores modern underrepresentation, measures the degree of its persistence in the discipline and within individual departments, and identifies drivers that exacerbate t…
The distribution of harmful product marketing in public outdoor spaces and the effectiveness of marketing bans
Vertical vs. Horizontal Fractal Dimensions of Roads in Relation to Relief Characteristics
This paper investigated the surface length of roads from both horizontal and vertical perspectives using the theory of fractal dimension of surfaces and curves. Three progressive experiments were conducted. The first demonstrated the magnitude of the differences between the planar road length and the DTM-derived surface road length and assessed its correlation with the DTM-calculated road slope. The second investigated the road distance complexit…
Environmental crisis or an act of contemporary racism? A flint effect on maternal health disparities
Background Racial injustices, both within the social and environmental aspect, are increasingly in national discussions due to impacts from the COVID-19 pandemic and persistent violence perpetrated by police against Black civilians that resulted in tragic deaths. An ongoing environmental injustice that began in 2014 is the Flint Water Crisis (FWC). The purpose of this study is to conduct a quasi-experimental research design to compare Flint to a …
Beauty is in the eye of the beholder
Comparison of ten policy options to equitably reduce children’s exposure to unhealthy food marketing
Objective: Reducing children’s exposure to unhealthy food marketing is crucial to combat childhood obesity. We aimed to estimate the reduction of children’s exposure to food marketing under different policy scenarios and assess exposure differences by socio-economic status. Design: Data on children’s exposure to unhealthy food marketing were compiled from a previous cross-sectional study in which children ( n 168) wore wearable cameras and Global…
Schoolyard Level Inventory for Describing the Environment
BACKGROUND: Schoolyards and/or playgrounds are important settings for fostering children's social, cognitive, and physical development. Optimal schoolyard design is likely an important health-promoting and equigenic strategy, but prior research does not fully consider multiple dimensions of these spaces, such as vegetation, slopes, ground cover, and equipment. AIMS: We describe the Schoolyard Level Inventory for Describing the Environment (SLIDE)…
The Voice Unheard
BACKGROUND: Eleven years have passed since the 2014 Flint water crisis (FWC), yet many voices still go unheard. There is limited evidence of the impact of the FWC on maternal health. This paper used a cross-sectional study design to survey 152 women enrolled in the Supporting Parents and Raising Resilient Kids (SPARRK) study in Flint, Michigan to examine racial differences in women's perceptions of their overall health pre- and post-FWC, perceive…
Geography (17 works) · Computer Science (9 works) · Environmental Science (9 works) · Cartography (7 works) · Land Use and Ecosystem Services (6 works) · Ecology (5 works) · Geology (5 works) · Mathematics (5 works) · Medicine (5 works) · Psychology (5 works)