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Articles 1051 - 1080 of 1855

Full-Text Articles in Geographic Information Sciences

Topic Modeling And The Historical Geography Of Scotland, Michael Gavin, Eric Gidal Nov 2016

Topic Modeling And The Historical Geography Of Scotland, Michael Gavin, Eric Gidal

Studies in Scottish Literature

Presents selected findings from a larger project using topic modeling for clusters of keywords from a defined corpus of 18th and 19th century Scottish topographical sources (including the Old and New Statistical Surveys), linked to GIS mapping, to explore such topics as Scottish industry, transport, antiquities, print culture, and religion, with 10 maps included in the article text.


Gogeomatics And Its New London Ontario Group, Chunhua Liao, Hongyu Zhang, Peter Crawford Nov 2016

Gogeomatics And Its New London Ontario Group, Chunhua Liao, Hongyu Zhang, Peter Crawford

GIS Day

GoGeomatics Canada is an online career network for the Canadian geomatics community. Founded in 2005, the website provides job postings, events listings, magazine articles and newsletter services for geomatics professionals. Informal and free monthly networking events at pubs across Canada are happening in more than ten regions including Ottawa, Toronto, Niagara, Calgary, Vancouver, and Edmonton. In October 2016, a new GoGeomatics London chapter was founded by a group of graduate students from the Department of Geography at Western University to bring social and career development events to the local geospatial community. The first event was held on Oct. 25 at …


Use Of Drones And Gis To Identify Geoglyphs In The Sihuas Valley, Peru, Felipe Gonzalez-Macqueen Nov 2016

Use Of Drones And Gis To Identify Geoglyphs In The Sihuas Valley, Peru, Felipe Gonzalez-Macqueen

GIS Day

Geoglyphs are anthropogenic features built onto the landscape by either removing a layer from the ground to expose the soil underneath or adding layers on top to create a relief. The most well-known examples of this are in the Nazca Valley, Peru where features can measure up to 400m long and have a variety of shapes. However not all geoglyphs are as big and complex as these, as is the case of the Sihuas Valley, Peru where geoglyphs are smaller and less elaborate in comparison. To identify and map these geoglyphs and other features, we used a combination of satellite …


Examining The Community Food Environments For Elementary School-Aged Children In The City Of London And Middlesex County, Ontario, Catherine Dubreck Nov 2016

Examining The Community Food Environments For Elementary School-Aged Children In The City Of London And Middlesex County, Ontario, Catherine Dubreck

GIS Day

Childhood obesity is a growing public health issue of global importance. In Canada, one in four children and youth are overweight or obese. Research suggests diet plays a crucial role in childhood obesity, and that prevalence rates of overweight or obesity among children in a neighborhood may relate to area socioeconomic characteristics and other environmental factors. The community nutrition environment (e.g., the type, location, and accessibility of food outlets) and the consumer nutrition environment (e.g., the price, promotion, placement, and availability of healthy options and nutrition information) can influence dietary habits, including the specific meal a child orders from a …


A Gis Analysis Of Waulsortian-Like Mounds In The Mississippian Of Kentucky And Tennessee, Philip Roberson Nov 2016

A Gis Analysis Of Waulsortian-Like Mounds In The Mississippian Of Kentucky And Tennessee, Philip Roberson

Scholars Week

Following a mass extinction nearly 365 million years ago, bryozoans and crinoids replaced corals and stromatoporoids as the dominant framework organisms in reefs and, during the very earliest part of the Carboniferous period, they built reef-like structures that are known from Europe, North America and Africa. They are characterized by large size, a matrix of carbonate mud, and their major framework organisms.

Waulsortian-like mounds occur in geographically isolated patches in outcrop and in the subsurface of central Tennessee and Kentucky where they are associated with hydrocarbon production. These mounds have the same characteristic organisms as the European mounds and do …


Adoption Statistics Analysis Using Geographic Information Systems, Ashtan H. Williams Nov 2016

Adoption Statistics Analysis Using Geographic Information Systems, Ashtan H. Williams

Scholars Week

This project highlights the use of Geographic Information Systems (GIS) for non-locational data by displaying adoption statistics. All topics displayed according to a political boundary (state or country) to include percentage of population awaiting adoption, time from termination of parental rights to finalization of adoption. A GIS-based analysis conducted for this project compares the cost of adoption from within the United States international. There is a focus on types of adoptions like special needs and race specific to provide an overall understanding of adoption in hopes to raise awareness.


Locally Optimized Mapping Of Slum Conditions In A Sub-Saharan Context: A Case Study Of Bamenda, Cameroon, Julius Anchang Nov 2016

Locally Optimized Mapping Of Slum Conditions In A Sub-Saharan Context: A Case Study Of Bamenda, Cameroon, Julius Anchang

USF Tampa Graduate Theses and Dissertations

Despite being an indicator of modernization and macro-economic growth, urbanization in regions such as Sub-Saharan Africa is tightly interwoven with poverty and deprivation. This has manifested physically as slums, which represent the worst residential urban areas, marked by lack of access to good quality housing and basic services. To effectively combat the slum phenomenon, local slum conditions must be captured in quantitative and spatial terms. However, there are significant hurdles to this. Slum detection and mapping requires readily available and reliable data, as well as a proper conceptualization of measurement and scale. Using Bamenda, Cameroon, as a test case, this …


Pilgrimage Project, David Sheffler, Mike Boyles, Christopher Baynard, Ron Lukens-Bull Nov 2016

Pilgrimage Project, David Sheffler, Mike Boyles, Christopher Baynard, Ron Lukens-Bull

DHI Digital Projects Showcase

The University of North Florida Pilgrimage Project combines interdisciplinary approaches with digital and STEM technologies and applies them to the study of pilgrimage with a special focus on the Camino de Santiago.


Characterization Of Landsat-7 To Landsat-8 Reflective Wavelength And Normalized Difference Vegetation Index Continuity, David P. Roy, V. Kovalskyy, Hankui Zhang, Eric F. Vermote, Lin Yan Dr., Sanath Sathyachandran Kumar, Alexey V. Egorov Nov 2016

Characterization Of Landsat-7 To Landsat-8 Reflective Wavelength And Normalized Difference Vegetation Index Continuity, David P. Roy, V. Kovalskyy, Hankui Zhang, Eric F. Vermote, Lin Yan Dr., Sanath Sathyachandran Kumar, Alexey V. Egorov

GSCE Faculty Publications

At over 40 years, the Landsat satellites provide the longest temporal record of space-based land surface observations, and the successful 2013 launch of the Landsat-8 is continuing this legacy. Ideally, the Landsat data record should be consistent over the Landsat sensor series. The Landsat-8 Operational Land Imager (OLI) has improved calibration, signal to noise characteristics, higher 12-bit radiometric resolution, and spectrally narrower wavebands than the previous Landsat-7 Enhanced Thematic Mapper (ETM +). Reflective wavelength differences between the two Landsat sensors depend also on the surface reflectance and atmospheric state which are difficult to model comprehensively. The orbit and sensing geometries …


Canopy Height Estimation By Characterizing Waveform Lidar Geometry Based On Shape-Distance Metric, Eric Ariel L. Salas, Geoffrey M. Henebry Nov 2016

Canopy Height Estimation By Characterizing Waveform Lidar Geometry Based On Shape-Distance Metric, Eric Ariel L. Salas, Geoffrey M. Henebry

GSCE Faculty Publications

There have been few approaches developed for the estimation of height using waveform LiDAR data. Unlike any existing methods, we illustrate how the new Moment Distance (MD) framework can characterize the canopy height based on the geometry and return power of the LiDAR waveform without having to go through curve modeling processes. Our approach offers the possibilities of using the raw waveform data to capture vital information from the variety of complex waveform shapes in LiDAR. We assess the relationship of the MD metrics to the key waveform landmarks—such as locations of peaks, power of returns, canopy heights, and height …


Site Layout Optimization Using Gis, Sulyn Gomez, Mohd Samrah, Jenan Almullaali Nov 2016

Site Layout Optimization Using Gis, Sulyn Gomez, Mohd Samrah, Jenan Almullaali

Purdue GIS Day

The aim of the research if to analyze the use of ArcGIS to optimize site layout and reduce the cost associated with the construction of a university campus by: - Optimizing the productivity of the equipment fleet after selecting the spatial position, type, and number of equipment with GIS. - Minimizing travel time (Noncontributory activity or waste) and maximizing labor productivity by selecting the spatial position and the number of warehouses. Although there are many temporary facilities in the construction site, the study is focused in managing warehouses and the lifting equipment (cranes). One important step for site layout optimization …


Utilizing Gis To Locate Endangered Gravel Hill Prairies Of The Wabash River Valley, Ryan W.R. Schroeder, Darrell Schulze Nov 2016

Utilizing Gis To Locate Endangered Gravel Hill Prairies Of The Wabash River Valley, Ryan W.R. Schroeder, Darrell Schulze

Purdue GIS Day

The Gravel Hill Prairies (GHP's) of the Wabash River Valley are an endangered ecosystem in the state of Indiana and provide optimal growing conditions for a number of state endangered plants. Currently only four remnants are known to exist near Lafayette, IN, found by a previous study conducted in 1980 by Post, Bacone, and Aldrich (Proceedings of the Indiana Academy of Science, 1984, vol. 94: 457-464). These unique ecosystems have been found to occur almost exclusively on soils classified as Rodman Gravelly Loams and Strawn-Rodman complexes which occur predominantly along the outwash terraces of the Wabash River and its tributaries. …


A Massively Parallel Evolutionary Computation Approach For Redistricting Optimization And Analysis, Wendy K. Tam Cho, Yan Liu Nov 2016

A Massively Parallel Evolutionary Computation Approach For Redistricting Optimization And Analysis, Wendy K. Tam Cho, Yan Liu

Purdue GIS Day

No abstract provided.


Teaching With Arcgis Pro, Larry Theller Nov 2016

Teaching With Arcgis Pro, Larry Theller

Purdue GIS Day

For Fall semester 2016 the ABE department moved the course ASM 540 Basic GIS from ArcGIS Desktop 10.2 to ArcGIS Pro 1.3. This software from ESRI has a completely new look and feel, (ribbon-based rather than cascading menus) and is a true 64 bit application, capable of multi-threading, and built on Python 3. After ArcGIS Desktop 10.5 is released, desktop ends and the future release will be ArcGIS Pro; so it makes sense to switch sooner rather than later. This talk will discuss some issues and some observations of that process.


Drone Panel Presentation: Unmanned Aerial Systems In Agriculture Research, Keith A. Cherkauer, Anthony Hearst, Yan Zhu Nov 2016

Drone Panel Presentation: Unmanned Aerial Systems In Agriculture Research, Keith A. Cherkauer, Anthony Hearst, Yan Zhu

Purdue GIS Day

No abstract provided.


Drone Panel Presentation: Using Drones In Archaeological Research: Kasakh Valley Archaeological Survey (Kvas), Armenia, Ian Lindsay Nov 2016

Drone Panel Presentation: Using Drones In Archaeological Research: Kasakh Valley Archaeological Survey (Kvas), Armenia, Ian Lindsay

Purdue GIS Day

No abstract provided.


The Impact Of Management On The Movement And Home Range Size Of Indiana's Eastern Hellbender Salamanders, Emily B. Mccallen, Bart T. Kraus, Nick G. Burgmeier, Rod N. Williams Nov 2016

The Impact Of Management On The Movement And Home Range Size Of Indiana's Eastern Hellbender Salamanders, Emily B. Mccallen, Bart T. Kraus, Nick G. Burgmeier, Rod N. Williams

Purdue GIS Day

Eastern hellbenders (Cryptobranchus alleganiensis alleganiensis) are a large, fully aquatic salamander species distributed throughout watersheds in the eastern United States. In Indiana, hellbenders were once found in tributaries of the Ohio River and the Wabash River but are now restricted to a single river in the southern portion of the state. Monitoring within the Blue River over twenty years has revealed a steady decrease in the total abundance of hellbenders and a shift towards older individuals in the age structure of the population. Concerned over the apparent lack of recruitment, the Indiana department of natural resources performed a series of …


Predicting U. S. Presidential Elections: From 1900 Until Today, Richard L. Hogan Nov 2016

Predicting U. S. Presidential Elections: From 1900 Until Today, Richard L. Hogan

Purdue GIS Day

This presentation is scheduled for the weekend before the presidential election of 2016. By then, we might all need a break from pollsters and predictions, although we still might be looking for some assurance that this will not be the end of Western Civilization as we knew it. Toward that end, a little historical perspective on presidential elections since 1900, complete with cool maps, of course, indicating partisanship by state, will illustrate several important hypotheses that the data suggest we might incorporate in our efforts to predict the future by explaining the past. Neither candidate has approved this message.


Drone Panel Presentation: Application Of Unmanned Aerial Systems (Uas), Brian Kozak Nov 2016

Drone Panel Presentation: Application Of Unmanned Aerial Systems (Uas), Brian Kozak

Purdue GIS Day

No abstract provided.


Gis In Archaeology: The Pedestrian Survey Of Dana Island In Turkey, Noah Kaye, Gunder Varinlioglu, Nicholas K. Rauh Nov 2016

Gis In Archaeology: The Pedestrian Survey Of Dana Island In Turkey, Noah Kaye, Gunder Varinlioglu, Nicholas K. Rauh

Purdue GIS Day

An international team of archaeologists conducted a surface survey of the remains on Dana Island, ancient Pithussae, near Silifke in south Coastal Turkey. The island sits 2 km offshore and is uninhabited. Architectural remains of stone quarries, large cisterns, houses and churches extend approximately 1.6 km along its western coast. At the crest of the mountain that rises above the shore stands the remains of an Iron Age fortress incorporated into later Byzantine structures. Relying on a base map constructed of the Google earth view of the island, digitized topographical maps, and an aerial photograph from 1990, the pedestrian team …


How Gis Will Support Next Gen 9-1-1, Jim I. Sparks Nov 2016

How Gis Will Support Next Gen 9-1-1, Jim I. Sparks

Purdue GIS Day

While most practitioners have a general awareness that GIS will play a more prominent role in Next Generation 9-1-1, few have much definitive information about what that means for Indiana GIS. This presentation will provide background information and an introduction to the requirements that NG 9-1-1 will place on our location data. Time will be left for some discussion centered on the challenges that are ahead of us.


Spatial Analysis Of Landfills In Respect To Flood Events And Sea-Level Rise, Benjamin S. Taylor, Songlin Fei Nov 2016

Spatial Analysis Of Landfills In Respect To Flood Events And Sea-Level Rise, Benjamin S. Taylor, Songlin Fei

Purdue GIS Day

Recently in the news, media coverage of flood events has garnered much attention due to tropical storms like Hurricane Matthew and the costly damages that resulted. Under climate change, events like sea-level rise (SLR) and flooding threaten infrastructure, which make it necessary for proper planning before, during, and after installation to mitigate risk. Studies in Austria and the UK have revealed that many landfills are located in flood zones as well as coastal areas effected by coastal erosion. In the U.S. however, there have not been publications on landfill locations related to flood events and SLR. The interest of gaining …


Introduction To The New Indiana Geospatial Coordinate System (Ingcs), Matthew Badger Nov 2016

Introduction To The New Indiana Geospatial Coordinate System (Ingcs), Matthew Badger

Purdue GIS Day

The Indiana Geospatial Coordinate System (InGCS) was approved and adopted by INDOT in 2015 and will soon be the primary coordinate reference system used on INDOT survey and design projects. Other agencies and organizations in the geospatial arena are encouraged to make use of this system of low distortion projections as well. Many of the more widely used geospatial software vendors have since included the InGCS in their platforms to support their customers’ needs. Please refer to the InGCS webpage at www.in.gov/indot/InGCS.htm for additional information.

Speaker Bio: Matthew G. Badger, P.S. Matt has been a licensed Professional Surveyor in Indiana …


Analyzing The Native-Exotic Richness Relationship Using Native Beta Diversity, Gabriela C. Nunez-Mir, Songlin Fei Nov 2016

Analyzing The Native-Exotic Richness Relationship Using Native Beta Diversity, Gabriela C. Nunez-Mir, Songlin Fei

Purdue GIS Day

Invasion paradox, a change of direction in native-exotic richness relationships (NERRs) from negative at small scales to positive at large scales, has been shown to exist in many environments. A major explanation for these patterns is environmental heterogeneity, and to a lesser extent, species pool size. It is likely that a combination of these factors is producing these patterns and determines if and how they appear in certain environments. Beta diversity, which describes the heterogeneity of species composition among assemblages and as the scalar between local richness and regional richness (species pool size), could serve as a proxy for these …


Geospatial Tools And Data Provided By Itap/Research Computing, Larry L. Biehl Nov 2016

Geospatial Tools And Data Provided By Itap/Research Computing, Larry L. Biehl

Purdue GIS Day

The presentation will provide the audience information about the geospatial applications that are available on campus including Esri ArcGIS, ERDAS Imagine, Exelis ENVI, Trimble eCognition and others. The information will include where to go to download the software installers and how to set up the licensing for them. The discussion will also go over the new software installer file download process.


Mapping Religion And Chinese Society, Jonathan E.E. Pettit Nov 2016

Mapping Religion And Chinese Society, Jonathan E.E. Pettit

Purdue GIS Day

Over the past two decades, the Chinese government has enacted a series of regulations that have made the collection of geospatial data illegal, and have tried to use existing technologies (e.g., cell phone towers, online mapping programs) to avert attempts to map sensitive areas in China. This talks examines the recent work of Purdue graduate students at the Center on Religion and Chinese Society, who have developed a web-based GIS program that provides researchers worldwide a way to make and use accurate data on religious and demographic data in China.


Gis Resources At Purdue, Randy Herban Nov 2016

Gis Resources At Purdue, Randy Herban

Purdue GIS Day

No abstract provided.


Open Access Geospatial Data, Hannah Hamalainen Oct 2016

Open Access Geospatial Data, Hannah Hamalainen

Open Access Events

The landscape of open-access geospatial data is vastly growing with an abundance of open source software, websites, and datasets available to the public. How do we find and access these resources? Find out from the Geospatial Services Center.


Investigating Effects Of Climate Change On Glaciers And Proglacial Landscapes In Southeast Iceland: Fluvioglacial Behavior Of Sólheimajökull And Seljavallajökull, Roberta B.C. Miller Oct 2016

Investigating Effects Of Climate Change On Glaciers And Proglacial Landscapes In Southeast Iceland: Fluvioglacial Behavior Of Sólheimajökull And Seljavallajökull, Roberta B.C. Miller

Independent Study Project (ISP) Collection

The Seljavallajökull glacier, part of the Eyjafjallajökull glacier system, and Sólheimajökull, part of the Mýrdalsjökull glacier system, are two glaciers that extend into valleys in the southeast part of Iceland. Due to climate warming, both of these glaciers are part of a melting ice cap. They are located nearby to one another, and Sólheimajökull has been extensively studied for its outwash plain sedimentology, retreat history, pro-glacial geomorphology and has been steadily monitored by the Glaciological Society of Iceland. Seljavallajökull has also been monitored by this group, but it has not been studied for sediment profiles and landscape chronology as Sólheimajökull …


Geospasial Indonesia: The Utilization Of Spatial Data Through Geographic Information Systems Across Indonesia In Various Environmental Contexts, Kaitlyn Bretz Oct 2016

Geospasial Indonesia: The Utilization Of Spatial Data Through Geographic Information Systems Across Indonesia In Various Environmental Contexts, Kaitlyn Bretz

Independent Study Project (ISP) Collection

Spatial planning and mapping in Indonesia have had a precarious history for the past several decades. Laws controlling the creation of maps for land use planning have fluctuated greatly between executive administrations and the country is still struggling to create a single, unified national map. With the One Map Policy the future of mapping is optimistic, but in the meantime spatial data analyses are lacking. Geographic information systems (GIS) is a computerized system for the capture, storage, querying, analysis, and display of spatial data, and is used predominately by the government, private companies, and nongovernmental organizations (NGOs) across Indonesia. Community …