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Articles 211 - 240 of 290

Full-Text Articles in Geography

Centering Animals In Latin American History, Andrew Sluyter Jan 2016

Centering Animals In Latin American History, Andrew Sluyter

Faculty Publications

No abstract provided.


Rainforest Cowboys: The Rise Of Ranching And Cattle Culture In Western Amazonia By Jeffrey Hoelle (Review), Andrew Sluyter Jan 2016

Rainforest Cowboys: The Rise Of Ranching And Cattle Culture In Western Amazonia By Jeffrey Hoelle (Review), Andrew Sluyter

Faculty Publications

No abstract provided.


Using Synthetic Tropical Cyclones To Characterize Extreme Hurricanes Affecting Charleston, South Carolina, Kelsey N. Ellis, Jill C. Trepanier, Robert E. Hodges Jan 2016

Using Synthetic Tropical Cyclones To Characterize Extreme Hurricanes Affecting Charleston, South Carolina, Kelsey N. Ellis, Jill C. Trepanier, Robert E. Hodges

Faculty Publications

The characteristics and conditions favoring extreme hurricanes remain largely unknown because of their small number in the observational record. Synthetic tracks are capable of providing a large, representative sample of these events, which provides an opportunity to further understanding of extreme characteristics as compared with those of more common tropical cyclones. The authors compare 300 synthetic extreme (100-yr event, ≥ 48.9 m s-1) and 300 common (5-yr event, ≤ 33.6 m s-1) tropical cyclones for Charleston, South Carolina, for differences in spatial, temporal, and other characteristics. Results suggest that extreme hurricanes have a more-defined spatial and temporal behavior, generally forming …


Editorial, Thomas J. Lampoltshammer, Michael Leitner, Noella Edelmann Jan 2016

Editorial, Thomas J. Lampoltshammer, Michael Leitner, Noella Edelmann

Faculty Publications

No abstract provided.


Mapping Rice Cropping Systems In Vietnam Using An Ndvi-Based Time-Series Similarity Measurement Based On Dtw Distance, Xudong Guan, Chong Huang, Gaohuan Liu, Xuelian Meng, Qingsheng Liu Jan 2016

Mapping Rice Cropping Systems In Vietnam Using An Ndvi-Based Time-Series Similarity Measurement Based On Dtw Distance, Xudong Guan, Chong Huang, Gaohuan Liu, Xuelian Meng, Qingsheng Liu

Faculty Publications

Normalized Difference Vegetation Index (NDVI) derived from Moderate Resolution Imaging Spectroradiometer (MODIS) time-series data has been widely used in the fields of crop and rice classification. The cloudy and rainy weather characteristics of the monsoon season greatly reduce the likelihood of obtaining high-quality optical remote sensing images. In addition, the diverse crop-planting system in Vietnam also hinders the comparison of NDVI among different crop stages. To address these problems, we apply a Dynamic TimeWarping (DTW) distance-based similarity measure approach and use the entire yearly NDVI time series to reduce the inaccuracy of classification using a single image. We first de-noise …


Characterizing The Sediment Bed In Terms Of Resistance To Motion: Toward An Improved Model Of Saltation Thresholds For Aeolian Transport, Brandon L. Edwards, Steven L. Namikas Dec 2015

Characterizing The Sediment Bed In Terms Of Resistance To Motion: Toward An Improved Model Of Saltation Thresholds For Aeolian Transport, Brandon L. Edwards, Steven L. Namikas

Faculty Publications

Models of aeolian transport thresholds generate a wide range of predictions, and error in threshold modeling leads to uncertainty in predicting aeolian events. This paper proposes a new characterization of the representative grain size for use in prediction of transport thresholds. This characterization is based on the distribution of resistance to motion in the sediment bed. The traditional grain size distribution uses a mean diameter to represent the sediment bed. However, the distribution of inertial forces resisting motion is not linearly proportional to the distribution of grain diameters, so that an arithmetic mean does not adequately represent the distribution of …


Spatial Information Divergence: Using Global And Local Indices To Compare Geographical Masks Applied To Crime Data, Ourania Kounadi, Michael Leitner Oct 2015

Spatial Information Divergence: Using Global And Local Indices To Compare Geographical Masks Applied To Crime Data, Ourania Kounadi, Michael Leitner

Faculty Publications

Advances in Geographic Information Science (GISc) and the increasing availability of location data have facilitated the dissemination of crime data and the abundance of crime mapping websites. However, data holders acknowledge that when releasing sensitive crime data there is a risk of compromising the victims' privacy. Hence, protection methodologies are primarily applied to the data to ensure that individual privacy is not violated. This article addresses one group of location protection methodologies, namely geographical masks that are applicable for crime data representations. The purpose is to identify which mask is the most appropriate for crime incident visualizations. A global divergence …


Lithium In Drinking Water And Suicide Mortality: Interplay With Lithium Prescriptions, Marco Helbich, Michael Leitner, Nestor D. Kapusta Jul 2015

Lithium In Drinking Water And Suicide Mortality: Interplay With Lithium Prescriptions, Marco Helbich, Michael Leitner, Nestor D. Kapusta

Faculty Publications

Background: Little is known about the effects of lithium intake through drinking water on suicide. This intake originates either from natural rock and soil elution and/or accumulation of lithium-based pharmaceuticals in ground water. Aims: To examine the interplay between natural lithium in drinking water, prescribed lithium-based pharmaceuticals and suicide in Austria. Method: Spatial Bayesian regressions for males, females and pooled suicide mortality rates were estimated. Results: Although the expected inverse association between lithium levels in drinking water and suicide mortality was confirmed for males and for total suicide rates, the relationship for females was not significant. The models do not …


The Construction Of The Homeless Individual: Contrasting The Effects Of Social Policy On Public Perceptions Of The Homeless During Two Periods Of United States History, Megan T. O’Connor May 2015

The Construction Of The Homeless Individual: Contrasting The Effects Of Social Policy On Public Perceptions Of The Homeless During Two Periods Of United States History, Megan T. O’Connor

Honors Capstones

No abstract provided.


Editorial, Michael Leitner, Marco Helbich Mar 2015

Editorial, Michael Leitner, Marco Helbich

Faculty Publications

No abstract provided.


Hurricane Risk Variability Along The Gulf Of Mexico Coastline, Jill C. Trepanier, Kelsey N. Ellis, Clay S. Tucker Mar 2015

Hurricane Risk Variability Along The Gulf Of Mexico Coastline, Jill C. Trepanier, Kelsey N. Ellis, Clay S. Tucker

Faculty Publications

Hurricane risk characteristics are examined across the U. S. Gulf of Mexico coastline using a hexagonal tessellation. Using an extreme value model, parameters are collected representing the rate or λ (frequency), the scale or σ (range), and the shape or ζ (intensity) of the extreme wind distribution. These latent parameters and the 30-year return level are visualized across the grid. The greatest 30-year return levels are located toward the center of the Gulf of Mexico, and for inland locations, along the borders of Louisiana, Mississippi, and Alabama. Using a geographically weighted regression model, the relationship of these parameters to sea …


African Cowboys On The Argentine Pampas: Their Disappearance From The Historical Record, Andrew Sluyter Jan 2015

African Cowboys On The Argentine Pampas: Their Disappearance From The Historical Record, Andrew Sluyter

Faculty Publications

No abstract provided.


Dreaming Of Dry Land: Environmental Transformation In Colonial Mexico City, Andrew Sluyter Jan 2015

Dreaming Of Dry Land: Environmental Transformation In Colonial Mexico City, Andrew Sluyter

Faculty Publications

No abstract provided.


Trends And Spatial Variability In Dry Spells Across The South-Central United States, Jill C. Trepanier, Michael J. Roberts, Barry D. Keim Jan 2015

Trends And Spatial Variability In Dry Spells Across The South-Central United States, Jill C. Trepanier, Michael J. Roberts, Barry D. Keim

Faculty Publications

Annual average and maximum spells with no precipitation in the southern United States are analyzed. In this study, dry spells are defined as consecutive days with no measurable rainfall. The study area includes 70 weather stations in Texas, Oklahoma, Louisiana, Arkansas, Mississippi, and Tennessee. Interarrival times between daily precipitation records for each station provide the data for this analysis. All 70 stations were analyzed from 1950 to 2013. Six stations that each have data for more than 100 years were analyzed for the period from 1908 to 2013. Approximately 25% of stations in the region show significant negative trends through …


Lessons From 3-D Surface Scanning Of 19th Century Coffin Plates From St. Thomas Anglican Churchyard, Belleville, Ontario, Canada, Abigail Woltering May 2014

Lessons From 3-D Surface Scanning Of 19th Century Coffin Plates From St. Thomas Anglican Churchyard, Belleville, Ontario, Canada, Abigail Woltering

Honors Capstones

No abstract provided.


African Arrivals And Transformations, Andrew Sluyter Jan 2014

African Arrivals And Transformations, Andrew Sluyter

Faculty Publications

No abstract provided.


Painting A Map Of Sixteenth-Century Mexico City: Land, Writing, And Native Rule, Andrew Sluyter Jan 2014

Painting A Map Of Sixteenth-Century Mexico City: Land, Writing, And Native Rule, Andrew Sluyter

Faculty Publications

No abstract provided.


Producing Africa At The New Orleans Jazz & Heritage Festival, Helen A. Regis Jun 2013

Producing Africa At The New Orleans Jazz & Heritage Festival, Helen A. Regis

Faculty Publications

No abstract provided.


The Morphological Evolution Of The Vocal Apparatus In The Human Lineage: Implications On The Emergence Of Language, Jacob Jesch May 2013

The Morphological Evolution Of The Vocal Apparatus In The Human Lineage: Implications On The Emergence Of Language, Jacob Jesch

Honors Capstones

No abstract provided.


New Mexico's Spanish Livestock Heritage: Four Centuries Of Animals, Land, And People., Andrew Sluyter Jan 2013

New Mexico's Spanish Livestock Heritage: Four Centuries Of Animals, Land, And People., Andrew Sluyter

Faculty Publications

No abstract provided.


History Of The Non-Spanish Antilles, Andrew Sluyter Jan 2013

History Of The Non-Spanish Antilles, Andrew Sluyter

Faculty Publications

No abstract provided.


Does Altitude Moderate The Impact Of Lithium On Suicide? A Spatial Analysis Of Austria, Marco Helbich, Victor Blüml, Michael Leitner, Nestor D. Kapusta Jan 2013

Does Altitude Moderate The Impact Of Lithium On Suicide? A Spatial Analysis Of Austria, Marco Helbich, Victor Blüml, Michael Leitner, Nestor D. Kapusta

Faculty Publications

Suicide, the tenth leading cause of death worldwide, is a complex phenomenon. Models aiming to explain the interaction of ambient variables such as socioeconomic factors, lithium content of drinking water and altitude are poorly developed. While controlling for several risk factors, this research bridges two different, but complementary research lines by investigating statistically the relationship on suicide mortality between lithium levels in drinking water in response to altitude above sea level. Besides regression models with main effects, a multiplicative interaction model between lithium and altitude has been developed providing estimates at the district-level for Austria where spatial autocorrelation was accounted …


Geospatial Examination Of Lithium In Drinking Water And Suicide Mortality, Marco Helbich, Michael Leitner, Nestor D. Kapusta Jun 2012

Geospatial Examination Of Lithium In Drinking Water And Suicide Mortality, Marco Helbich, Michael Leitner, Nestor D. Kapusta

Faculty Publications

Background: Lithium as a substance occurring naturally in food and drinking water may exert positive effects on mental health. In therapeutic doses, which are more than 100 times higher than natural daily intakes, lithium has been proven to be a mood-stabilizer and suicide preventive. This study examined whether natural lithium content in drinking water is regionally associated with lower suicide rates.Methods: Previous statistical approaches were challenged by global and local spatial regression models taking spatial autocorrelation as well as non-stationarity into account. A Geographically Weighted Regression model was applied with significant independent variables as indicated by a spatial autoregressive model.Results: …


Small Anatomical Variant Has Profound Implications For Evolution Of Human Birth And Brain Development, Robert G. Tague May 2012

Small Anatomical Variant Has Profound Implications For Evolution Of Human Birth And Brain Development, Robert G. Tague

Faculty Publications

No abstract provided.


Excavation Of Transect 4 At The Eleanor Betty Site, A Submerged Classic Maya Salt Work, Belize, Taylor Aucoin May 2012

Excavation Of Transect 4 At The Eleanor Betty Site, A Submerged Classic Maya Salt Work, Belize, Taylor Aucoin

Honors Capstones

No abstract provided.


Traditional Ecological Knowledge (Tek) And Modern Natural Resource Policy In China: Pathways For Integration, Lauren Elizabeth Nyman May 2012

Traditional Ecological Knowledge (Tek) And Modern Natural Resource Policy In China: Pathways For Integration, Lauren Elizabeth Nyman

Honors Capstones

No abstract provided.


Development Of Modern Healthcare In Pre-1949 China With Emphasis On Geographical Relationships, Matthew Monroe Schexnayder Apr 2012

Development Of Modern Healthcare In Pre-1949 China With Emphasis On Geographical Relationships, Matthew Monroe Schexnayder

Honors Capstones

No abstract provided.


Mapping Latin America: A Cartographic Reader, Andrew Sluyter Jan 2012

Mapping Latin America: A Cartographic Reader, Andrew Sluyter

Faculty Publications

No abstract provided.


The Oxford Handbook Of Slavery In The Americas, Andrew Sluyter Jan 2012

The Oxford Handbook Of Slavery In The Americas, Andrew Sluyter

Faculty Publications

No abstract provided.


Dental Genetic Traits Of Selected Maya Burials From Wild Cane Cay And Moho Cay, Belize, Kelly Heim May 2011

Dental Genetic Traits Of Selected Maya Burials From Wild Cane Cay And Moho Cay, Belize, Kelly Heim

Honors Capstones

No abstract provided.