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Articles 1 - 30 of 2167

Full-Text Articles in Geographic Information Sciences

Non-Combat Death Location, Karl D. Qualls, Alexia Orengo Green Jan 2020

Non-Combat Death Location, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

The map shows the death location for Spaniards who died from non-combat causes. The points have a purple gradient going from lightest to darkest to represent the quantity of Spaniards in a location. The darker the point the more Spaniards are in that location.


Combined Location Of Spanish Youth, Karl D. Qualls, Alexia Orengo Green Jan 2020

Combined Location Of Spanish Youth, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

The map shows the location of Spanish Youth in June 1944 and end of 1945. The green gradient points represent the Spaniards’ location in June of 1944, while the red gradient points represent the Spaniards’ location at the end of 1945. The gradient goes from lightest to darkest to represent the quantity of Spaniards in a location. The darker the point the more Spaniards are in that location. The map illustrates the dramatic concentration of Spanish youth in Moscow Oblast’.


Combined Death Location, Karl D. Qualls, Alexia Orengo Green Jan 2020

Combined Death Location, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

This map shows the death location for Spaniards who died in combat and from non-combat causes. The quantity of Spaniards who died in a location is represented with a gradual color change. The combat deaths have a red gradient and the non-combat deaths have a purple gradient, going from lightest to darkest to represent a higher number of Spaniards.


Combined Birth Location, Karl D. Qualls, Alexia Orengo Green Jan 2020

Combined Birth Location, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

This map shows birth locations for Spaniards who died in combat and from non-combat causes. The quantity of Spaniards who were born in a location is represented with a gradual color change. The combat deaths have a red gradient and the non-combat deaths have a purple gradient, going from lightest to darkest to represent a higher number of Spaniards.


Combat Birth Location, Karl D. Qualls, Alexia Orengo Green Jan 2020

Combat Birth Location, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

This map demonstrates the birth location for Spaniards who died in combat. The points have a red gradient going from lightest to darkest to represent the quantity of Spaniards in a location. The darker the point the more Spaniards are in that location.


Displaced Spaniards Map, Layer Files & Data Tables, Karl D. Qualls, Alexia Orengo Green Jan 2020

Displaced Spaniards Map, Layer Files & Data Tables, Karl D. Qualls, Alexia Orengo Green

Stalins Niños - GIS Maps Data

This zip file contains three folders related to the Displaced Spaniards maps.

The Dislpaced Spaniards folder contains the index, GDB, APRX and other files associated with the GIS mapping.

The Displaced Spaniards Layers folder contains LYRX files for the associated GIS maps.

The third folder contains the associated data tables.


Tuberculosis, Karl D. Qualls, Alexia Orengo Green Jan 2020

Tuberculosis, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

The map shows the number and location of Spaniards who died from tuberculosis while being displaced in the USSR. The quantity of Spaniards is represented with a gradient point size that increases with the numbers of deaths in a location. The exact number of deaths in a given location is also indicated with an N= #.


Location Of Spanish Youth, 1945, Karl D. Qualls, Alexia Orengo Green Jan 2020

Location Of Spanish Youth, 1945, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

The map shows the location of Spanish Youth at the end of 1945. The points have a red gradient going from lightest to darkest to represent the quantity of Spaniards in a location. The darker the point the more Spaniards are in that location.


Location Of Spanish Youth, June 1944, Karl D. Qualls, Alexia Orengo Green Jan 2020

Location Of Spanish Youth, June 1944, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

The map shows the location of Spanish Youth in June 1944. The points have a green gradient going from lightest to darkest to represent the quantity of Spaniards in a location. The darker the point the more Spaniards are in that location.


Combat Death Location, Karl D. Qualls, Alexia Orengo Green Jan 2020

Combat Death Location, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

The map shows the death location for Spaniards who died combat. The points have a red gradient going from lightest to darkest to represent the quantity of Spaniards in a location. The darker the point the more Spaniards are in that location.


Non-Combat Birth Location, Karl D. Qualls, Alexia Orengo Green Jan 2020

Non-Combat Birth Location, Karl D. Qualls, Alexia Orengo Green

Stalin's Niños - GIS Map PDFs

This map demonstrates the birth location for Spaniards who died from non-combat causes. The points have a purple gradient going from lightest to darkest to represent the quantity of Spaniards in a location. The darker the point the more Spaniards are in that location.


“Ohsome” Openstreetmap Data Evaluation_ Fitness Of Field Papers For Participatory Mapping Sep 2019

“Ohsome” Openstreetmap Data Evaluation_ Fitness Of Field Papers For Participatory Mapping

Levente Juhasz

No abstract provided.


Contextualizing Openstreetmap In Mapping Favelas In Brazil, Everton Bortolini, Silvana Philippi Camboim Sep 2019

Contextualizing Openstreetmap In Mapping Favelas In Brazil, Everton Bortolini, Silvana Philippi Camboim

Levente Juhasz

No abstract provided.


Assessing The Causal Impact Of Chinese Aid On Vegetative Land Cover In Burundi And Rwanda Under Conditions Of Spatial Imprecision, Robert Marty, Seth Goodman, Michael Lefew, Carrie B. Dolan, Ariel Benyishay, Daniel Runfola Sep 2019

Assessing The Causal Impact Of Chinese Aid On Vegetative Land Cover In Burundi And Rwanda Under Conditions Of Spatial Imprecision, Robert Marty, Seth Goodman, Michael Lefew, Carrie B. Dolan, Ariel Benyishay, Daniel Runfola

Carrie Dolan

There has been considerable debate regarding the efficacy of international aid in meeting the dual goals of human development and environmental sustainability. Many donors have sought to engage with this challenge by introducing environmental safeguard and monitoring initiatives; however, evidence on the success of these interventions is limited. Evaluating aid is a particular challenge in the case of donors that do not disclose information on the nature, geographic location, or extents of their interventions. In such cases, new methods that extract and geoparse data on the activities of opaque donors through the manual interpretation of thousands of news and other ...


Determining Fire Severity Of The Santa Rosa, Ca 2017 Fire, John Cortenbach, Richard Williams, Buddhika Madurapperuma Sep 2019

Determining Fire Severity Of The Santa Rosa, Ca 2017 Fire, John Cortenbach, Richard Williams, Buddhika Madurapperuma

IdeaFest: Interdisciplinary Journal of Creative Works and Research from Humboldt State University

No abstract provided.


Deciphering Public Transit Ridership In Baton Rouge: Spatial Disaggregation Approaches, Xuan Kuai Aug 2019

Deciphering Public Transit Ridership In Baton Rouge: Spatial Disaggregation Approaches, Xuan Kuai

LSU Doctoral Dissertations

Background: Surveys across the U.S. reveal that commuters driving personal vehicles spend a significant amount of time in traffic, while public transit, as an efficient commuting mode, has been largely underutilized.

Purpose: What causes a low public transit ridership? How could public transit ridership be explained by demographic, socio-economic and spatial characteristics of neighborhood? This study answers these questions by deciphering the relationships between public transit ridership and various factors in a medium-size city in southern U.S. – Baton Rouge, Louisiana.

Methods: Non-spatial and spatial data in a larger areal unit (e.g., block group) are used to infer ...


Digitally-Mediated Practices Of Geospatial Archaeological Data: Transformation, Integration, & Interpretation, Heather Richards-Rissetto, Kristin Landau Aug 2019

Digitally-Mediated Practices Of Geospatial Archaeological Data: Transformation, Integration, & Interpretation, Heather Richards-Rissetto, Kristin Landau

Anthropology Faculty Publications

Digitally-mediated practices of archaeological data require reflexive thinking about where archaeology stands as a discipline in regard to the ‘digital,’ and where we want to go. To move toward this goal, we advocate a historical approach that emphasizes contextual source-side criticism and data intimacy—scrutinizing maps and 3D data as we do artifacts by analyzing position, form, material and context of analog and digital sources. Applying this approach, we reflect on what we have learned from processes of digitally-mediated data. We ask: What can we learn as we convert analog data to digital data? And, how does digital data transformation ...


Impacts Of Spatial Patterns Of Rural And Exurban Residential Development On Agricultural Trends In The Intermountain West, Saleh Ahmed, Douglas Jackson-Smith Aug 2019

Impacts Of Spatial Patterns Of Rural And Exurban Residential Development On Agricultural Trends In The Intermountain West, Saleh Ahmed, Douglas Jackson-Smith

Saleh Ahmed

In recent years, counties in the Intermountain West (Colorado, Idaho, Montana, Wyoming, and Utah) have experienced rapid population growth and housing development, and much of this growth is occurring outside of urban areas. Residential development often has negative impacts on farmlands, farm viability, and environmental services provided by working landscapes. We used county-level data to identify the association between the intensity and spatial patterns of residential settlement and trends in selected farm outcomes between 1997 and 2012 in the region. Results demonstrate that accounting for the spatial pattern or degree of fragmentation and clustering of rural and exurban residential development ...


The Importance Of Landscape Position Information And Elevation Uncertainty For Barrier Island Habitat Mapping And Modeling, Nicholas Matthew Enwright Aug 2019

The Importance Of Landscape Position Information And Elevation Uncertainty For Barrier Island Habitat Mapping And Modeling, Nicholas Matthew Enwright

LSU Doctoral Dissertations

Barrier islands provide important ecosystem services, including storm protection and erosion control to the mainland, habitat for fish and wildlife, and tourism. As a result, natural resource managers are concerned with monitoring changes to these islands and modeling future states of these environments. Landscape position, such as elevation and distance from shore, influences habitat coverage on barrier islands by regulating exposure to abiotic factors, including waves, tides, and salt spray. Geographers commonly use aerial topographic lidar data for extracting landscape position information. However, researchers rarely consider lidar elevation uncertainty when using automated processes for extracting elevation-dependent habitats from lidar data ...


Testing Multivariate Alteration Detection For Tropical Deforestation Using Synthetic Aperture Radar (Sar) And Drone Imagery In Mamomi Valley, Panama, Abigail Bohman Aug 2019

Testing Multivariate Alteration Detection For Tropical Deforestation Using Synthetic Aperture Radar (Sar) And Drone Imagery In Mamomi Valley, Panama, Abigail Bohman

MS GIS Program Major Individual Projects

Monitoring tropical deforestation poses a juxtaposition of urgency and difficulty. Because of nearly constant cloud cover in the tropics, heavily studied and widely implemented methods using multispectral satellite imagery to do large-scale land monitoring are not possible. Being an active sensing system that can penetrate through clouds, Synthetic Aperture Radar (SAR) solves this issue, making it one of the best opportunities for tropical forest change in the tropics. In Mamoní Valley, Panama, Multivariate Alteration Detection (MAD) analysis was used with SAR Ground Range Detected imagery from the European Space Agency’s (ESA) Sentinel 1 satellite to test its viability for ...


Evaluating The Presence Of The Endocrine Disruptor 4-Nonylphenol In California Glaciers, Jonah Lay Aug 2019

Evaluating The Presence Of The Endocrine Disruptor 4-Nonylphenol In California Glaciers, Jonah Lay

MS GIS Program Major Individual Projects

The use of GIS in addressing environmental problems is evident in its application to the Sierra Nevada mountain range glaciers in California. The presence of 4-nonylphenol (4NP) in pesticides used in agriculture has led to its accumulation in California glaciers through onshore wind deposition. As an endocrine disruptor, 4NP poses a threat to human health because it can interrupt and alter physiological processes such as human development and metabolism, and lead to ovarian and prostate cancer at higher concentrations. To evaluate the mass of 4NP in the glacier, GIS analysis is conducted with considerations of wind direction, topographic features, and ...


Lidar-Based Sinkhole Detection And Mapping In Knox County, Tennessee, J Clint Shannon, David Moore, Yingkui Li, Cathy Olsen Jul 2019

Lidar-Based Sinkhole Detection And Mapping In Knox County, Tennessee, J Clint Shannon, David Moore, Yingkui Li, Cathy Olsen

Pursuit - The Journal of Undergraduate Research at the University of Tennessee

Sinkholes are one of the major causes of damage to roads, buildings, and other infrastructure throughout the US. Sinkholes near or on roads are especially costly and occasionally deadly. Knox County and much of East Tennessee are located within karst areas (comprised of porous and soluble limestone and dolomite), deeming it at risk for sinkholes. Currently, Knox County uses contour maps to manually identify sinkholes. Supported by a geographic information system (GIS), we developed a streamlined model to identify the locations and extents of potential sinkholes using 1.3-ft resolution LiDAR (Light Detection and Ranging) data and applied it to ...


The Hyperwall: A Geospatial Education Exhibit For The Science Museum Of Virginia, Alexander Walton Jul 2019

The Hyperwall: A Geospatial Education Exhibit For The Science Museum Of Virginia, Alexander Walton

MS GIS Program Major Individual Projects

Modern museums rely on technologically advanced platforms to attract visitors and convey information. The Science Museum of Virginia (SMV) proposed a new interactive geospatial education exhibit called the EarthLab Data Hyperwall to support their mission statement of “inspiring Virginians to enhance their lives through science.” A hyperwall/video wall is a visualization tool composed of a large screen array used for education and collaborative work. The SMV’s Hyperwall Exhibit consists of a high resolution video wall controlled by a connected, visitor-accessible touchscreen. The exhibit educates visitors on several environmental and climatic topics using interactive maps to increase comprehension. This ...


A Hidden Markov Model For Matching Spatial Networks, Benoit Costes, Julien Perret Jun 2019

A Hidden Markov Model For Matching Spatial Networks, Benoit Costes, Julien Perret

Journal of Spatial Information Science

Datasets of the same geographic space at different scales and temporalities are increasingly abundant, paving the way for new scientific research. These datasets require data integration, which implies linking homologous entities in a process called data matching that remains a challenging task, despite a quite substantial literature, because of data imperfections and heterogeneities. In this paper, we present an approach for matching spatial networks based on a hidden Markov model (HMM) that takes full benefit of the underlying topology of networks. The approach is assessed using four heterogeneous datasets (streets, roads, railway, and hydrographic networks), showing that the HMM algorithm ...


Evaluating Existing Manually Constructed Natural Landscape Classification With A Machine Learning-Based Approach, Rok Ciglic, Erik Strumbelj, Rok Cesnovar, Mauro Hrvatin, Drago Perko Jun 2019

Evaluating Existing Manually Constructed Natural Landscape Classification With A Machine Learning-Based Approach, Rok Ciglic, Erik Strumbelj, Rok Cesnovar, Mauro Hrvatin, Drago Perko

Journal of Spatial Information Science

Some landscape classifications officially determine financial obligations; thus, they must be objective and precise. We presume it is possible to quantitatively evaluate existing manually constructed classifications and correct them if necessary. One option for achieving this goal is a machine learning method. With (re)modeling of the landscape classification and an explanation of its structure, we can add quantitative proof to its original (qualitative) description. The main objectives of the paper are to evaluate the consistency of the existing manually constructed natural landscape classification with a machine learning-based approach and to test the newly developed general black-box explanation method in ...


Discovery Of Topological Constraints On Spatial Object Classes Using A Refined Topological Model, Ivan Majic, Elham Naghizade, Stephan Winter, Martin Tomko Jun 2019

Discovery Of Topological Constraints On Spatial Object Classes Using A Refined Topological Model, Ivan Majic, Elham Naghizade, Stephan Winter, Martin Tomko

Journal of Spatial Information Science

In a typical data collection process, a surveyed spatial object is annotated upon creation, and is classified based on its attributes. This annotation can also be guided by textual definitions of objects. However, interpretations of such definitions may differ among people, and thus result in subjective and inconsistent classification of objects. This problem becomes even more pronounced if the cultural and linguistic differences are considered. As a solution, this paper investigates the role of topology as the defining characteristic of a class of spatial objects. We propose a data mining approach based on frequent itemset mining to learn patterns in ...


Comparing The Spatial And Temporal Activity Patterns Between Snapchat, Twitter And Flickr In Florida, Levente Juhasz, Hartwig H. Hochmair Jun 2019

Comparing The Spatial And Temporal Activity Patterns Between Snapchat, Twitter And Flickr In Florida, Levente Juhasz, Hartwig H. Hochmair

GIS Center

Social media services generate enormous amounts of spatiotemporal data that can be used to characterize and analyse user activities and social behaviour. Although crowdsourced data have the advantage of comprehensive spatial and temporal coverage compared to data collected in more traditional ways, the various social media platforms target different user groups, which leads to user selection bias. Since data from social media platforms are used for a variety of geospatial applications, understanding such differences and their implications for analysis results is important for geoscientists. Therefore, this research analyses differences in spatial and temporal contribution patterns to three online platforms, namely ...


Analysis Of Flickr, Snapchat, And Twitter Use For The Modeling Of Visitor Activity In Florida State Parks, Hartwig H. Hochmair, Levente Juhasz Jun 2019

Analysis Of Flickr, Snapchat, And Twitter Use For The Modeling Of Visitor Activity In Florida State Parks, Hartwig H. Hochmair, Levente Juhasz

GIS Center

Spatio-temporal information attached to social media posts allows analysts to study human activity and travel behavior. This study analyzes contribution patterns to the Flickr, Snapchat, and Twitter platforms in over 100 state parks in Central and Northern Florida. The first part of the study correlates monthly visitor count data with the number of Flickr images, snaps, or tweets, contributed within the park areas. It provides insight into the suitability of these different social media platforms to be used as a proxy for the prediction of visitor numbers in state parks. The second part of the study analyzes the spatial distribution ...


Public, Private And Tribal Lands In Humboldt And Trinity Counties, Nate A. Douglass Jun 2019

Public, Private And Tribal Lands In Humboldt And Trinity Counties, Nate A. Douglass

Humboldt Journal of Social Relations

This map titled “Public, Private and Tribal Lands in Humboldt and Trinity Counties” was a commissioned project by Dr. Yvonne Everett in the Environmental Science and Management Department at Humboldt State University. The purpose of the map was to depict the overlap in land ownership and native, pre-European territories. The most challenging part of the project was finding a way to successfully represent multiple land ownership layers while also distinctly calling out former aboriginal territories, all in one map. For this, bold dotted lines with soft concentric halos seemed to do the trick. These aboriginal territories were manually digitized from ...


Yosemite & Zion National Park, Sean Flemming Jun 2019

Yosemite & Zion National Park, Sean Flemming

Humboldt Journal of Social Relations

This map displays exciting color gradients representing the variation of the elevation in both Yosemite and Zion National Parks. It was created utilizing United States Geological Survey (USGS) National Map 3DEP 1/3rd arc-second Digital Elevation Models and Adobe Photoshop.