Open Access. Powered by Scholars. Published by Universities.®

Geographic Information Sciences Commons™

Open Access. Powered by Scholars. Published by Universities.®

Discipline
Institution
Keyword
Publication Year
Publication
Publication Type
File Type

Articles 1621 - 1650 of 1867

Full-Text Articles in Geographic Information Sciences

Putting Artists On The Map: A Five Part Study Of Greater Cleveland Artists' Location Decisions - Part 2: Profiles Of Artist Neighborhoods, Mark Salling, Gregory Soltis, Charles Post, Sharon Bliss, Ellen Cyran Nov 2010

Putting Artists On The Map: A Five Part Study Of Greater Cleveland Artists' Location Decisions - Part 2: Profiles Of Artist Neighborhoods, Mark Salling, Gregory Soltis, Charles Post, Sharon Bliss, Ellen Cyran

All Maxine Goodman Levin School of Urban Affairs Publications

A series of reports detailing the residential and work space location preferences of Cuyahoga county's artists.


Land Use As It Relates To Land Slope, James D. Plourde, Bryan C. Pijanowski Nov 2010

Land Use As It Relates To Land Slope, James D. Plourde, Bryan C. Pijanowski

GIS Day

The goal of this project is to analyze the relationship between the slope of land and agricultural land use. The output was analyzed to determine a threshold point at which agriculture practices drop off in relation to higher slope values. Slope of the land is important to agricultural practices because it impacts drainage and net crop primary production. Agricultural land was extracted from the 2001 National Land Cover Dataset using reclassification tools in ArcGIS 9.3. The slope of the contiguous United States was derived from the United States Geological Survey National Elevation Dataset by using the slope tool in the …


Rich Internet Geoweb For Spatial Data Infrastructure, Tin Seong Kam Oct 2010

Rich Internet Geoweb For Spatial Data Infrastructure, Tin Seong Kam

Research Collection School Of Computing and Information Systems

In this information age, more and more public statistical data such as population census, household living, local economy and business establishment are distributed over the internet within the framework of spatial data infrastructure. By and large, these data are organized geographically such as region, province as well as district. Usually, they are published in the form of digital maps over the internet as simple points, lines and polygons markers limited or no analytical function available to transform these data into useful information. To meet the analytical needs of casual public data users, we contribute RIGVAT, a rich internet geospatial visual …


Mapping In Philanthropy: Exploring The Use Of Mapping In Foundation Grantmaking, Jim Casey Aug 2010

Mapping In Philanthropy: Exploring The Use Of Mapping In Foundation Grantmaking, Jim Casey

Geography and the Environment: Graduate Student Capstones

Foundations provide grants to nonprofit organizations in our communities, who then provide services locally. Choosing which nonprofit to fund, and which not to fund is difficult. This study examines current uses and upcoming uses of mapping and Geographic Information Systems (GIS) as part of funding decisions made by foundations. Foundations engaged in strategic funding, especially that which targets specific populations are more likely to use GIS and geospatial analysis in funding decisions. Grantmaking in response to proposals requires less strategic analysis and calls for mapping much less by comparison. As a field, nationally foundations and nonprofits have identified many uses …


A Gis Model To Predict Feral Pig (Sus Scrofa) Habitat On Vandenberg Air Force Base, California, Brian Schnick Aug 2010

A Gis Model To Predict Feral Pig (Sus Scrofa) Habitat On Vandenberg Air Force Base, California, Brian Schnick

Geography and the Environment: Graduate Student Capstones

The applicable Natural Resource area of this project is animal control and wildlife management, as wild pigs can be quite destructive to landscapes (Campbell, et al., 2010) (McCann, et al., 2008). Geographic Information System (GIS) predictive models have proven to be useful in regards to other mammals (Travaini, et al., 2007), raptors (Bustamante, et al., 2004), and pest species such as locusts (van der Werf, et al., 2005). Pigs are often nocturnal and bed down in heavy cover, hindering direct observation. Additionally, Vandenberg Air Force Base (VAFB) encompasses over 400 square kilometers. Therefore, predictive modeling is an appropriate method for …


Developing Tornado Climatology In The Southern Great Plains Per Phases Of Prominent Oceanic Oscillations, Nicholas M. Fillo Aug 2010

Developing Tornado Climatology In The Southern Great Plains Per Phases Of Prominent Oceanic Oscillations, Nicholas M. Fillo

Geography and the Environment: Graduate Student Capstones

Meteorologists are continually working toward a greater understanding of which atmospheric environments are most conducive for tornado development. This Capstone project analyzed tornado occurrences across Texas, Oklahoma, Arkansas and Louisiana during the period 1950 through 2009 to determine if any correlation exists between the location and frequency of tornado activity and the phases of the El Nino-Southern Oscillation, the Atlantic Multidecadal Oscillation and the Pacific Decadal Oscillation. While it was determined that no phase of any of the oscillations studied was significantly more dominant over the other(s) concerning frequency, this project does identify some spatial shifts in tornado activity depending …


Determining Heritage Oak Tree Susceptibility To Sudden Oak Death Using Gis Risk Analysis, Michelle M. Guzdek Aug 2010

Determining Heritage Oak Tree Susceptibility To Sudden Oak Death Using Gis Risk Analysis, Michelle M. Guzdek

Geography and the Environment: Graduate Student Capstones

Sudden Oak Death (SOD), caused by the pathogenic water mold Phytophthora ramorum, has killed hundreds of thousands of oak trees in the California coastal regions, with redwood-tanoak forests being hit the hardest (Shoemaker et al., 2007). The term “sudden oak death” is used to describe the disease, because of how rapidly the pathogen has killed otherwise healthy tanoaks, virtually in a matter of weeks (COMTF 2010). SOD was first reported in California in 1994 and is believed to have originated from infected nursery or ornamental plants, but the source has never been identified (Mascheretti et al. 2008).


Design Of A Comprehensive Geographic Information System For The Administration Of El Camino Real De Los Tejas National Historic Trail, Jeffrey M. Williams Jul 2010

Design Of A Comprehensive Geographic Information System For The Administration Of El Camino Real De Los Tejas National Historic Trail, Jeffrey M. Williams

Faculty Publications

Stephen F. Austin State University’s Arthur Temple College of Forestry and Agriculture’s (ATCOFA) Geographic Information Systems (GIS) Laboratory were engaged by the National Park Service (NPS) National Trails System-Intermountain Region to provide GIS services supporting the NPS’s development of a Comprehensive Management Plan for El Camino Real de los Tejas National Historic Trail (ELTE). The scope of work was completed under an agreement with the Gulf Coast Cooperative Ecosystem Studies Unit sponsored by the Texas AgriLife Research Program at Texas A&M University. ATCOFA assisted the NPS in the coordination of local landowner and other local stakeholder contacts, conducted archival research …


Gis Applications For Coal Mine Subsidence In The State Of Colorado, Charles J. Strickler Jun 2010

Gis Applications For Coal Mine Subsidence In The State Of Colorado, Charles J. Strickler

Geography and the Environment: Graduate Student Capstones

The state of Colorado has an extensive history of subsurface coal mining. Due to the widespread extraction of coal, numerous subsidence events have occurred, causing both costly and potentially dangerous conditions. The two most common types of underground coal mines in Colorado are slope and shaft mines, which are prone to roof collapse that can propagate to the surface in the form of sinkholes and troughs. Sinkholes and troughs can occur over prolonged periods of time or as instantaneous events, which may leave landowners little reaction time and expensive repairs. As of January 2010, no spatial database existed that covered …


Using Gis To Determine Wind Harvesting Potential To Help Offset Boulder County's Yearly Energy Usage To Become A More Sustainable County, Pete Coventry Jun 2010

Using Gis To Determine Wind Harvesting Potential To Help Offset Boulder County's Yearly Energy Usage To Become A More Sustainable County, Pete Coventry

Geography and the Environment: Graduate Student Capstones

This project focuses on Boulder County, Colorado as a case study to demonstrate how a Geographic Information System (GIS) can identify potential wind harvesting areas. A step by step demonstration will illustrate the steps needed to determine such harvesting areas and their wind potential. Once potential wind harvesting areas have been identified, concluding analysis will determine the amount of energy generated in efforts to offset current energy use. Harvesting wind has dated back to the 7th century and is looked at as a mature technology (Edwards 2003). Over the past few decades, public attitudes towards wind harvesting is becoming …


Susceptibility Modeling And Mission Flight Route Optimization In A Low Threat, Combat Environment, Brett J. Machovina Jun 2010

Susceptibility Modeling And Mission Flight Route Optimization In A Low Threat, Combat Environment, Brett J. Machovina

Electronic Theses and Dissertations

Movement and transportation systems are a primary topic in the study of humans and their relationship with the environment. Only a few modes of transportation allow for nearly full freedom of movement that is unconstrained by rigid nodes and networks. Individual human travel (walking, climbing, swimming, etc.) is one example while rotorcraft travel is another. Although other criteria constrain movement, independence from a network allows for a unique examination of human spatial decision-making and choice behavior. This research analyzes helicopter flight route planning in a low threat combat environment with respect to geography. The particular problem addressed, which ultimately concerns …


Tracking Sources Of Enrollment At Etsu Through The Use Of Gis., Charles Thomas Phillips May 2010

Tracking Sources Of Enrollment At Etsu Through The Use Of Gis., Charles Thomas Phillips

Electronic Theses and Dissertations

The objective of this research is to look at fall freshmen enrollment data for East Tennessee State University and see if patterns in the enrollment exist. This paper focuses on fall freshmen enrollment during the years 1997, 2002, and 2007 at ETSU. Once the data were gathered, they were mapped and statistically analyzed using geographic information systems (GIS) and statistical analysis software.

Many things were learned from the GIS maps created and statistical analysis. First, the maps showed that from 1997 to 2007, ETSU's enrollment became more consolidated in the East Tennessee region and moved westward into Middle and Western …


Assessing The Efficacy Of Modis Satellite-Derived Start Of Growing Season For Jurisdictional Determination Of East Texas Bottomland Hardwood Wetlands, Karen Malone, Hans Michael Williams, I-Kuai Hung, Daniel Unger May 2010

Assessing The Efficacy Of Modis Satellite-Derived Start Of Growing Season For Jurisdictional Determination Of East Texas Bottomland Hardwood Wetlands, Karen Malone, Hans Michael Williams, I-Kuai Hung, Daniel Unger

Faculty Publications

Introduction: Crucial to the determination of a jurisdictional wetland is the definition of “growing season”. Satellite imagery is being utilized in other ecological applications, but is lagging in wetland growing season determination. Both cost and temporal limitations historically have restrained use of satellite imagery in assessing the start up of the growing season. Multiple commercial satellites are available that provide high resolution imagery, but the cost are prohibitive for most studies. The National Aeronautics and Space Administration (NASA) and the U.S. Geological Survey (USGS) jointly manage the Landsat and the Moderate-resolution Imaging Spectroradiometer (MODIS) satellite programs. Landsat Enhanced Thematic Mapper …


Geographic Information System Analysis Of Changing Demographic Patterns And Ethnic Restaurant Locations In Bowling Green, Kentucky, 1940-2005, Shwu-Jing Jeng May 2010

Geographic Information System Analysis Of Changing Demographic Patterns And Ethnic Restaurant Locations In Bowling Green, Kentucky, 1940-2005, Shwu-Jing Jeng

Masters Theses & Specialist Projects

The geography of food has been a popular subject for researchers and scholars who have explored the representative foods of a given region in reference to the area’s cultural identity. Food plays an important role in the development of individual cultures and civilization. Food consumption and dining habits usually reflect individuals’ location, cultural and individual identity, accessibility to food and heritage. United States is a country often called a “melting pot society.” Immigrants in the United States comprise over eight percent of the population, and various ethnic groups have reshaped American society with their unique cultures and foodways.

Driven in …


Islands In The Stream: Searching For Structure In The Aboriginal Fishery Along The Snake River, Travis Jay Pitkin May 2010

Islands In The Stream: Searching For Structure In The Aboriginal Fishery Along The Snake River, Travis Jay Pitkin

Boise State University Theses and Dissertations

The ethnographic literature describing indigenous groups that traditionally inhabited the course of the Snake River commonly cites anadromous fish as an integral and seasonal part of their subsistence pursuit. This study maps known fishing sites and associated landscape variables along the Snake River. A Geographic Information System (GIS) is used to analyze known fishing sites within the framework of surrounding physiographic features as they related to fishing strategy, salmon behavior, and decisions regarding fishing site selection. Examining the immediate stretch of adjacent river, relevant physiographic features are identified, inventoried, and their intervals recorded. The locations of Snake River fishing sites …


A General-Purpose Parallel Raster Processing Programming Library Test Application Using A Geographic Cellular Automata Model, Qingfeng Guan, Keith C. Clarke May 2010

A General-Purpose Parallel Raster Processing Programming Library Test Application Using A Geographic Cellular Automata Model, Qingfeng Guan, Keith C. Clarke

Geography Program: Faculty Publications

A general-purpose parallel Raster Processing programming Library (pRPL) was developed and applied to speed up a commonly used Cellular Automaton model with known tractability limitations. The library is suitable for use by geographic information scientists with basic programming skills, but who lack knowledge and experience of parallel computing and programming. pRPL is a general-purpose programming library that provides generic support for raster processing, including local-scope, neighborhood-scope, regional-scope, and global-scope algorithms as long as they are parallelizable. The library also supports multi-layer algorithms. Besides the standard data domain decomposition methods, pRPL provides a spatially-adaptive quad-tree-based decomposition to produce more evenly distributed …


Object-Based Segmentation And Classification Of One Meter Imagery For Use In Forest Management Plans, W. Kevin Wells May 2010

Object-Based Segmentation And Classification Of One Meter Imagery For Use In Forest Management Plans, W. Kevin Wells

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This research developed an ArcGIS Python model that extracts polygons from aerial imagery and assigns each polygon a vegetation type based on a modified set of landcover classes from the Southwest Regional Gap Analysis Project. The model showed an ability to generate polygons that accurately represent vegetation community boundaries across a large landscape. The model is for use by the Utah Division of Forestry, Fire, and State Lands to assist in the preparation of forest management plans. The model was judged useful because it was easy to use, it met a designated 50% threshold of useable polygons, and it met …


Modeling Bark Beetle Outbreak And Fire Interactions In Western U.S. Forests And The Invasion Potential Of An Invasive Puerto Rican Frog In Hawaii Using Remote Sensing Data, Simon A. Bisrat May 2010

Modeling Bark Beetle Outbreak And Fire Interactions In Western U.S. Forests And The Invasion Potential Of An Invasive Puerto Rican Frog In Hawaii Using Remote Sensing Data, Simon A. Bisrat

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I used Moderate-Resolution Imaging Spectroradiometer (MODIS) imagery to answer two ecological questions. In the first project, I investigated the interactions between bark beetle-caused tree mortality and fire occurrence in western U.S. forests. I used remotely sensed fire data detected by MODIS satellite and bark beetle-caused tree mortality data. I tested the hypothesis that there is an increased probability of fire incidence in bark beetle-damaged forests compared to healthy forests using conditional probability modeling across the national forests of the western U.S. regardless of forest type. My results did not show a consistent pattern (increase or decrease of conditional probability of …


Random Forests Applied As A Soil Spatial Predictive Model In Arid Utah, Alexander Knell Stum May 2010

Random Forests Applied As A Soil Spatial Predictive Model In Arid Utah, Alexander Knell Stum

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Initial soil surveys are incomplete for large tracts of public land in the western USA. Digital soil mapping offers a quantitative approach as an alternative to traditional soil mapping. I sought to predict soil classes across an arid to semiarid watershed of western Utah by applying random forests (RF) and using environmental covariates derived from Landsat 7 Enhanced Thematic Mapper Plus (ETM+) and digital elevation models (DEM). Random forests are similar to classification and regression trees (CART). However, RF is doubly random. Many (e.g., 500) weak trees are grown (trained) independently because each tree is trained with a new randomly …


An Analysis Of The Conservation Importance Of Amazon Borderlands Using Geographic Information Systems, Ben Weinstein, David S. Salisbury, Kimberly Britt Klinker Apr 2010

An Analysis Of The Conservation Importance Of Amazon Borderlands Using Geographic Information Systems, Ben Weinstein, David S. Salisbury, Kimberly Britt Klinker

Geography and the Environment Poster Presentations

At 6,000,000 km2, the Amazon basin is a critical hotspot of global biodiversity. The Amazon lowland is often incorrectly portrayed as a single homogenous unit, a vast and unpopulated region (Eva & Huber 2005). In actuality, nine countries comprise the Amazon, creating a mosaic of ecological, cultural and political boundaries (Manne 2003, Maffi 2005). Our aim is to test whether these Amazonian borderlands have greater conservation significance than the Amazonian interior. The political geography has profound effects on conservation as each country designates and maintains area differently (Eva & Huber 2005). Depending on management type, protected areas shelter ecosystems from …


Analysis Of Streamflow In The St. Croix River: A Hydrologic Model, Stephanie A. Kleinschmidt Apr 2010

Analysis Of Streamflow In The St. Croix River: A Hydrologic Model, Stephanie A. Kleinschmidt

Geography Honors Projects

This project assesses how streamflow is affected by anthropogenic changes to the environment, looking specifically at the St. Croix River Basin. In 2004 the United States Geologic Survey (USGS) published a report on streamflow in the St. Croix River at two gaging stations: Danbury and St. Croix Falls. The streamflow at the upstream station near Danbury, Wisconsin remained stable over time, while an increase was observed at the station in St. Croix Falls, Wisconsin further downstream. In order to evaluate this disparity, this project utilizes a GIS hydrologic model to analyze the factors expected to be influencing the flow rate. …


Mapping The Mahajanga Basin: Using Gis To Explore Spatial Relationships In Madagascar's Geology And Paleontology, Anne Brown Apr 2010

Mapping The Mahajanga Basin: Using Gis To Explore Spatial Relationships In Madagascar's Geology And Paleontology, Anne Brown

Geography Honors Projects

Tha Mahajanga Basin, located in northwestern Madagascar, is a region of intense geological and paleontological study, but has never before been subject to spatial analysis. Since 1993, expeditions conducted by Stony Brook University, Macalester College, and the University of Antananarivo have uncovered a rich sampling of more than six thousand specimens and observations including fossils of non-avian dinosaurs, crocodiles, and turtles. This paper analyzes the spatial relationships between paired groups within the fossil record as well as wider regional trends to address paleoenvironment. A combination of spatial analysis and statistics are used to determine the patterns existing between fossils or …


A Test Of The Area Of Refuge Hypothesis In Indo-Pacific Marine Biogeography, Jonnell C. Sanciangco Apr 2010

A Test Of The Area Of Refuge Hypothesis In Indo-Pacific Marine Biogeography, Jonnell C. Sanciangco

Biological Sciences Theses & Dissertations

Many hypotheses have been proposed to explain the marine biogeographic patterns of species richness of the Indo-Pacific. One of these hypotheses suggests that available habitat area is the main predictor of species richness. This is the basis for the area of refuge hypothesis that attempts to explain the global maxima of species richness found in the Coral Triangle, the area encompassing mostly the Philippines, Indonesia, and Malaysia. This species-area effect also has habitat heterogeneity as a potential component. The purpose of this study is to test the effects of habitat availability predictors, such as shallow water area and coastline length …


A Gis Analysis Of The Environmental Variables Related To Rift Valley Fever Outbreaks, Jacqueline Florette Jackson Apr 2010

A Gis Analysis Of The Environmental Variables Related To Rift Valley Fever Outbreaks, Jacqueline Florette Jackson

Health Services Research Dissertations

Rift Valley fever is a mosquito-borne disease that causes widespread febrile illness and mortality in domestic animals as well as humans (Gaff, 2007). Rift Valley fever virus was first isolated in 1931 (Daubney, 1931), and since then, outbreaks have occurred in sub-Saharan Africa, southern Africa, Egypt, Saudi Arabia, Yemen and Madagascar, proving it to be a virus able to invade ecologically diverse regions (Gaff, 2007). The potential introduction of Rift Valley fever into the United States suggests the potential for human infection and major economic disruption. It is important to understand the role environmental variables have played in historical outbreaks …


A Hidden Markov Model For Earthquake Declustering, Zhengxiao Wu Mar 2010

A Hidden Markov Model For Earthquake Declustering, Zhengxiao Wu

Research Collection School of Economics

The hidden Markov model (HMM) and related algorithms provide a powerful framework for statistical inference on partially observed stochastic processes. HMMs have been successfully implemented in many disciplines, though not as widely applied as they should be in earthquake modeling. In this article, a simple HMM earthquake occurrence model is proposed. Its performance in declustering is compared with the epidemic-type aftershock sequence model, using a data set of the central and western regions of Japan. The earthquake clusters and the single earthquakes separated using our model show some interesting geophysical differences. In particular, the log-linear Gutenberg-Richter frequency-magnitude law (G-R law) …


Smart Density: A More Accurate Method Of Measuring Rural Residential Density For Health-Related Research, Peter M. Owens, Linda Titus-Ernstoff, Lucinda Gibson, Michael L. Beach, Sandy Beauregard, Madeline A. Dalton Feb 2010

Smart Density: A More Accurate Method Of Measuring Rural Residential Density For Health-Related Research, Peter M. Owens, Linda Titus-Ernstoff, Lucinda Gibson, Michael L. Beach, Sandy Beauregard, Madeline A. Dalton

Dartmouth Scholarship

Studies involving the built environment have typically relied on US Census data to measure residential density. However, census geographic units are often unsuited to health-related research, especially in rural areas where development is clustered and discontinuous. We evaluated the accuracy of both standard census methods and alternative GIS-based methods to measure rural density.


Research Poster: Gis And Remote Sensing Core Lab For Facilitating Interdisciplinary Research In Climate Change, Haroon Stephen, William J. Smith, Craig Palmer, Thomas C. Piechota Feb 2010

Research Poster: Gis And Remote Sensing Core Lab For Facilitating Interdisciplinary Research In Climate Change, Haroon Stephen, William J. Smith, Craig Palmer, Thomas C. Piechota

2010 Annual Nevada NSF EPSCoR Climate Change Conference

Research poster


The Changing Contexts And Transboundary Dynamics Of Reconciling Conservation And Development In The Amazon Borderlands, David S. Salisbury, Jorge Vela Alvarado, Cloe R. Franko Jan 2010

The Changing Contexts And Transboundary Dynamics Of Reconciling Conservation And Development In The Amazon Borderlands, David S. Salisbury, Jorge Vela Alvarado, Cloe R. Franko

Geography and the Environment Poster Presentations

The 12,000 kilometers of international boundaries within the Amazon’s lowland rainforest biome form the axis of a borderland region shared by the nine states of Amazonia (Figure 1). These Amazon borderlands contain high concentrations of conservation units and indigenous territories to preserve the transboundary region’s rich ecological and cultural diversity (Figures 2 & 3). However, this biocultural diversity is increasingly threatened by advancing development frontiers and a growing global demand for Amazonian resources.


Turning Toward Place, Space, And Time, Edward L. Ayers Jan 2010

Turning Toward Place, Space, And Time, Edward L. Ayers

History Faculty Publications

A critical geography and a new historicism have reoriented many humanists and social science disciplines. Like the spatial turn, the temporal turn now grounds the analysis of everything from literature to sociology in new kinds of contexts. The exciting challenge before us now is integrating those new perspectives, taking advantage of what they have to teach us.


The Use Of High Frequency Gps Data To Classify Main Behavioural Categories In A Przewalski’S Horse In The Mongolian Gobi, Petra Kaczensky, Klaus Huber Jan 2010

The Use Of High Frequency Gps Data To Classify Main Behavioural Categories In A Przewalski’S Horse In The Mongolian Gobi, Petra Kaczensky, Klaus Huber

Erforschung biologischer Ressourcen der Mongolei / Exploration into the Biological Resources of Mongolia, ISSN 0440-1298

Behavioral observations of free ranging animals can provide important insight into many aspects of their biology but are not without problems. The recent development of GPS technology allows to remotely collect high precision location data at fixed intervals. We tested whether it is possible to classify the behavior of a Przewalski’s horse in the Mongolian Gobi into Resting, Grazing and Moving based on GPS locations collected at 15 minute intervals by comparing GPS data with direct observations. Although behavioral categories lasting for 15 minutes could by fairly reliably separated based on the distances covered between successive fixes, almost half the …