Stephen J Walsh
Biographic Data
| ID | 209537 |
|---|---|
| NAME | Stephen J Walsh |
| GIVEN NAMES | Stephen J |
| FAMILY NAME | Walsh |
| SIGNATURE | WALSH S J |
| AFFILIATIONS | University of North Carolina at Chapel Hill |
| ORCID | 0000-0002-1009-8537 |
| VERIFIED | Yes |
| TOTAL WORKS | 27 |
| TOTAL CITATIONS | 122 |
| AUTHOR COUNT | 26 |
| EDITOR COUNT | 1 |
| FIRST PUBLICATION YEAR | 1968 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 7 |
Psychometric testing of the breastfeeding self-efficacy scale to measure exclusive breastfeeding in African American women: A cross-sectional study
Background In United States, African American women are the least likely group to breastfeed exclusively compared with Hispanic and non-Hispanic White women. It is crucial to examine the perceived confidence of African American women towards practicing exclusive breastfeeding. Previous studies have examined breastfeeding self-efficacy and other factors influencing exclusive breastfeeding. However, there is no research on exclusive breastfeeding s…
Climate shocks and migration: An agent-based modeling approach
Multiscale Relationships Between Alpine Treeline Elevation and Hypothesized Environmental Controls in the Western United States
Multiple environmental factors contribute to the spatial and compositional character and elevational patterns of alpine treeline ecotones (ATEs), and the relative influence of these factors is scale dependent and spatially variable. Frameworks detailing the hierarchical structure of the ATE have been developed to characterize scale dependencies of the pattern and controls of treeline, but this topic has not been studied across a broad range of sc…
Modelling Tourism in the Galapagos Islands: An Agent-Based Model Approach
Currently tourism is the main driver of change in the Galapagos Islands, affecting the social, terrestrial, and marine sub-systems. Tourism also has direct and indirect consequences for the unique archipelago's natural habitats and for the human well-being. Describing the mechanisms that drive and affect most the tourism development in Galapagos is a preliminary condition to developing a better understanding of the interaction structure of factor…
Land Suitability Modeling Using a Geographic Socio-Environmental Niche-Based Approach: A Case Study from Northeastern Thailand
Understanding the pattern-process relations of land use/land cover change is an important area of research that provides key insights into human-environment interactions. The suitability or likelihood of occurrence of land use such as agricultural crop types across a human-managed landscape is a central consideration. Recent advances in niche-based, geographic species distribution modeling (SDM) offer a novel approach to understanding land suitab…
Using stylized agent-based models for population–environment research: A case study from the Galápagos Islands
Remote Sensing of Mountain Environments
Logistical challenges of conducting field research in topographically complex alpine settings, combined with the multi-scale and multi-thematic informational needs of earth and landscape scientists and program managers, have contributed to the development and application of remote sensing data, methods, and approaches for the study of mountain environments. This article provides a brief introduction to remote sensing science; illustrates specific…
Biocomplexity in coupled human-natural systems: The study of population and environment interactions
Population growth and its spatial distribution as factors in the deforestation of Nang Rong, Thailand
Complexity theory, spatial simulation models, and land use dynamics in the Northern Ecuadorian Amazon
Frontier Land Use Change: Synthesis, Challenges, and Next Steps
Profound social, economic, and environmental changes that include new land management practices are often associated with advancing agricultural frontiers. We argue that existing approaches to case studies do not allow for clear generalization or the systematic testing of hypotheses. As an alternative, our study uses Mill's method of agreement approach to synthesize results from seven long-term case studies of land cover change in frontier areas.…
Pressure on the Cuyabeno Wildlife Reserve: Development and Land Use/Cover Change in the Northern Ecuadorian Amazon
Complexity at Advancing Ecotones and Frontiers
Ecotones, such as advancing treelines, have been examined as complex self-organizing systems. Frontiers of human settlement may share some of their spatial characteristics, because they too include feedbacks between spatial pattern and process. Advancing frontiers of three study areas in the Amazonian region of Ecuador are analyzed with the aid of Landsat imagery to detect change. Power-law distributions of advancing deforestation are found, whic…
Population and Upland Crop Production in Nang Rong, Thailand
Developing a science of land change: Challenges and methodological issues
Land-change science has emerged as a foundational element of global environment change and sustainability science. It seeks to understand the human and environment dynamics that give rise to changed land uses and covers, not only in terms of their type and magnitude but their location as well. This focus requires the integration of social, natural, and geographical information sciences. Each of these broad research communities has developed diffe…
People and the Environment: Approaches for Linking Household and Community Surveys to Remote Sensing and GIS
Spatial arrangement of social and economic networks among villages in Nang Rong District, Thailand
Subject loss in spatial analysis of breast cancer
The effects of occupation-based social position on mortality in a large American cohort
OBJECTIVES: Four occupation-based measures were used to derive estimates of social position's effect on all-cause mortality among men and women in a large national cohort. METHODS: The National Longitudinal Mortality Study provided information on principal occupation and 9-year follow-up for 229,851 persons aged 25 through 64 years. Cox's proportional hazards model was used to estimate the age-adjusted risk of death relative to six ordinal catego…
Geographic information systems, spatial network analysis, and contraceptive choice
How does family planning accessibility affect contraceptive choice? In this paper we use techniques of spatial analysis to develop measures of family planning accessibility, and evaluate the effects of these geographically derived measures in a multilevel statistical model of temporary method choice in Nang Rong, Thailand. In our analyses we combine spatial data obtained from maps and Global Positioning System (GPS) readings with sociodemographic…
The Viking Opera Guide
Oedipus Rex
The Time of Music: New Meanings, New Temporalities, New Listening Strategies
Lithologic, Structural, and Topographic Influences on Snow-Avalanche Path Location, Eastern Glacier National Park, Montana
We examine the roles of lithology, structure, and topography as determinants of the location and morphology of snow-avalanche paths in east-central Glacier National Park, Montana. Most models of avalanche path location emphsize topographic interactions with prevailing winds and ignore the role of geologic influences. Landsat Thematic Mapper digital data, covering the study area, were enhanced through a combination of directional and nondirectiona…
Bartok Quartets
Frontier Land Use Change: Synthesis, Challenges, and Next Steps
Profound social, economic, and environmental changes that include new land management practices are often associated with advancing agricultural frontiers. We argue that existing approaches to case studies do not allow for clear generalization or the systematic testing of hypotheses. As an alternative, our study uses Mill's method of agreement approach to synthesize results from seven long-term case studies of land cover change in frontier areas.…
Geographic information systems, spatial network analysis, and contraceptive choice
How does family planning accessibility affect contraceptive choice? In this paper we use techniques of spatial analysis to develop measures of family planning accessibility, and evaluate the effects of these geographically derived measures in a multilevel statistical model of temporary method choice in Nang Rong, Thailand. In our analyses we combine spatial data obtained from maps and Global Positioning System (GPS) readings with sociodemographic…
Pressure on the Cuyabeno Wildlife Reserve: Development and Land Use/Cover Change in the Northern Ecuadorian Amazon
Complexity theory, spatial simulation models, and land use dynamics in the Northern Ecuadorian Amazon
Climate shocks and migration: An agent-based modeling approach
Population growth and its spatial distribution as factors in the deforestation of Nang Rong, Thailand
The effects of occupation-based social position on mortality in a large American cohort
OBJECTIVES: Four occupation-based measures were used to derive estimates of social position's effect on all-cause mortality among men and women in a large national cohort. METHODS: The National Longitudinal Mortality Study provided information on principal occupation and 9-year follow-up for 229,851 persons aged 25 through 64 years. Cox's proportional hazards model was used to estimate the age-adjusted risk of death relative to six ordinal catego…
Population and Upland Crop Production in Nang Rong, Thailand
Biocomplexity in coupled human-natural systems: The study of population and environment interactions
Complexity at Advancing Ecotones and Frontiers
Ecotones, such as advancing treelines, have been examined as complex self-organizing systems. Frontiers of human settlement may share some of their spatial characteristics, because they too include feedbacks between spatial pattern and process. Advancing frontiers of three study areas in the Amazonian region of Ecuador are analyzed with the aid of Landsat imagery to detect change. Power-law distributions of advancing deforestation are found, whic…
Using stylized agent-based models for population–environment research: A case study from the Galápagos Islands
A methodology for estimating emergency evacuation times
A methodology based on probabilistic mobilization time curves and pertinent evacuation network details is described for estimating the times required for the partial or total evacuation of an emergency planning zone (EPZ). Such an EPZ evacuation study is required by the U.S. Nuclear Regualatory Commission (NRC) for existing and proposed nuclear power operating plants. Inputs and outputs for the resulting computer model developed from the methodol…
Multiscale Relationships Between Alpine Treeline Elevation and Hypothesized Environmental Controls in the Western United States
Multiple environmental factors contribute to the spatial and compositional character and elevational patterns of alpine treeline ecotones (ATEs), and the relative influence of these factors is scale dependent and spatially variable. Frameworks detailing the hierarchical structure of the ATE have been developed to characterize scale dependencies of the pattern and controls of treeline, but this topic has not been studied across a broad range of sc…
Land Suitability Modeling Using a Geographic Socio-Environmental Niche-Based Approach: A Case Study from Northeastern Thailand
Understanding the pattern-process relations of land use/land cover change is an important area of research that provides key insights into human-environment interactions. The suitability or likelihood of occurrence of land use such as agricultural crop types across a human-managed landscape is a central consideration. Recent advances in niche-based, geographic species distribution modeling (SDM) offer a novel approach to understanding land suitab…
Remote Sensing of Mountain Environments
Logistical challenges of conducting field research in topographically complex alpine settings, combined with the multi-scale and multi-thematic informational needs of earth and landscape scientists and program managers, have contributed to the development and application of remote sensing data, methods, and approaches for the study of mountain environments. This article provides a brief introduction to remote sensing science; illustrates specific…
Subject loss in spatial analysis of breast cancer
Durufle
A methodology for estimating emergency evacuation times
A methodology based on probabilistic mobilization time curves and pertinent evacuation network details is described for estimating the times required for the partial or total evacuation of an emergency planning zone (EPZ). Such an EPZ evacuation study is required by the U.S. Nuclear Regualatory Commission (NRC) for existing and proposed nuclear power operating plants. Inputs and outputs for the resulting computer model developed from the methodol…
Bartok Quartets
Lithologic, Structural, and Topographic Influences on Snow-Avalanche Path Location, Eastern Glacier National Park, Montana
We examine the roles of lithology, structure, and topography as determinants of the location and morphology of snow-avalanche paths in east-central Glacier National Park, Montana. Most models of avalanche path location emphsize topographic interactions with prevailing winds and ignore the role of geologic influences. Landsat Thematic Mapper digital data, covering the study area, were enhanced through a combination of directional and nondirectiona…
The Time of Music: New Meanings, New Temporalities, New Listening Strategies
The Viking Opera Guide
Oedipus Rex
The effects of occupation-based social position on mortality in a large American cohort
OBJECTIVES: Four occupation-based measures were used to derive estimates of social position's effect on all-cause mortality among men and women in a large national cohort. METHODS: The National Longitudinal Mortality Study provided information on principal occupation and 9-year follow-up for 229,851 persons aged 25 through 64 years. Cox's proportional hazards model was used to estimate the age-adjusted risk of death relative to six ordinal catego…
Geographic information systems, spatial network analysis, and contraceptive choice
How does family planning accessibility affect contraceptive choice? In this paper we use techniques of spatial analysis to develop measures of family planning accessibility, and evaluate the effects of these geographically derived measures in a multilevel statistical model of temporary method choice in Nang Rong, Thailand. In our analyses we combine spatial data obtained from maps and Global Positioning System (GPS) readings with sociodemographic…
Subject loss in spatial analysis of breast cancer
Spatial arrangement of social and economic networks among villages in Nang Rong District, Thailand
People and the Environment: Approaches for Linking Household and Community Surveys to Remote Sensing and GIS
Developing a science of land change: Challenges and methodological issues
Land-change science has emerged as a foundational element of global environment change and sustainability science. It seeks to understand the human and environment dynamics that give rise to changed land uses and covers, not only in terms of their type and magnitude but their location as well. This focus requires the integration of social, natural, and geographical information sciences. Each of these broad research communities has developed diffe…
Population and Upland Crop Production in Nang Rong, Thailand
Pressure on the Cuyabeno Wildlife Reserve: Development and Land Use/Cover Change in the Northern Ecuadorian Amazon
Complexity at Advancing Ecotones and Frontiers
Ecotones, such as advancing treelines, have been examined as complex self-organizing systems. Frontiers of human settlement may share some of their spatial characteristics, because they too include feedbacks between spatial pattern and process. Advancing frontiers of three study areas in the Amazonian region of Ecuador are analyzed with the aid of Landsat imagery to detect change. Power-law distributions of advancing deforestation are found, whic…
Population growth and its spatial distribution as factors in the deforestation of Nang Rong, Thailand
Complexity theory, spatial simulation models, and land use dynamics in the Northern Ecuadorian Amazon
Frontier Land Use Change: Synthesis, Challenges, and Next Steps
Profound social, economic, and environmental changes that include new land management practices are often associated with advancing agricultural frontiers. We argue that existing approaches to case studies do not allow for clear generalization or the systematic testing of hypotheses. As an alternative, our study uses Mill's method of agreement approach to synthesize results from seven long-term case studies of land cover change in frontier areas.…
Biocomplexity in coupled human-natural systems: The study of population and environment interactions
Remote Sensing of Mountain Environments
Logistical challenges of conducting field research in topographically complex alpine settings, combined with the multi-scale and multi-thematic informational needs of earth and landscape scientists and program managers, have contributed to the development and application of remote sensing data, methods, and approaches for the study of mountain environments. This article provides a brief introduction to remote sensing science; illustrates specific…
Using stylized agent-based models for population–environment research: A case study from the Galápagos Islands
Land Suitability Modeling Using a Geographic Socio-Environmental Niche-Based Approach: A Case Study from Northeastern Thailand
Understanding the pattern-process relations of land use/land cover change is an important area of research that provides key insights into human-environment interactions. The suitability or likelihood of occurrence of land use such as agricultural crop types across a human-managed landscape is a central consideration. Recent advances in niche-based, geographic species distribution modeling (SDM) offer a novel approach to understanding land suitab…
Modelling Tourism in the Galapagos Islands: An Agent-Based Model Approach
Currently tourism is the main driver of change in the Galapagos Islands, affecting the social, terrestrial, and marine sub-systems. Tourism also has direct and indirect consequences for the unique archipelago's natural habitats and for the human well-being. Describing the mechanisms that drive and affect most the tourism development in Galapagos is a preliminary condition to developing a better understanding of the interaction structure of factor…
Multiscale Relationships Between Alpine Treeline Elevation and Hypothesized Environmental Controls in the Western United States
Multiple environmental factors contribute to the spatial and compositional character and elevational patterns of alpine treeline ecotones (ATEs), and the relative influence of these factors is scale dependent and spatially variable. Frameworks detailing the hierarchical structure of the ATE have been developed to characterize scale dependencies of the pattern and controls of treeline, but this topic has not been studied across a broad range of sc…
Geography (19 works) · Computer Science (13 works) · Ecology (11 works) · Land Use and Ecosystem Services (9 works) · Agriculture (8 works) · Cartography (8 works) · Environmental resource management (8 works) · Land use (8 works) · Population (8 works) · Conservation, Biodiversity, and Resource Management (7 works)