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Assessing Landslide Susceptibility With Gis Using Qualitative & Quantitative Methods In Knox County, Nebraska, Christian J. Cruz 2017 University of Nebraska-Lincoln

Assessing Landslide Susceptibility With Gis Using Qualitative & Quantitative Methods In Knox County, Nebraska, Christian J. Cruz

Theses and Dissertations in Geography

This thesis assesses landslide susceptibility using data from LiDAR DEMs, land cover, and soil surveys. Data were assessed quantitatively through Bayesian logistic regression within a geographic information system (GIS) and statistical software to produce a landslide susceptibility map. The study area exhibits moderate relief where bluffs along the Missouri River valley gradually recede into rolling loess-mantled hills further to the south and southeast in Knox County. The six factors used to determine susceptibility to landslides are: land cover, parent material, slope aspect, slope curvature slope degree, and soil series. My findings show an increase in slope is the most significant ...


Modelling Cash Crop Growth In Tn, Spencer Weston 2017 University of Tennessee

Modelling Cash Crop Growth In Tn, Spencer Weston

University of Tennessee Honors Thesis Projects

No abstract provided.


Gis Specialist 2016 Internship With Cdm Smith In Boston, Massachusetts, Suzanne L. Meek 2017 Clark University

Gis Specialist 2016 Internship With Cdm Smith In Boston, Massachusetts, Suzanne L. Meek

International Development, Community and Environment (IDCE)

This report provides a detailed experience of my internship with CDM Smith during the summer of 2016. This was a formal 12-week internship that was extended an additional two weeks due to my success in the first few weeks. My title was listed as a GIS Specialist Intern. My responsibilities included applying GIS technologies to construction, water, and energy projects, digitizing various locations for cities and private clients, FEMA projects, and street light audits in two different towns in New England.


Exploring Factors Influencing Children's Use Of A Free Recreation Access Pass: Does Geography Matter?, Joannah M. Campbell 2017 The University of Western Ontario

Exploring Factors Influencing Children's Use Of A Free Recreation Access Pass: Does Geography Matter?, Joannah M. Campbell

Electronic Thesis and Dissertation Repository

Only a small proportion of Canadian children achieve the recommend daily minimum amount of moderate-vigorous physical activity (PA). The Grade 5 ACT-i-Pass (G5AP) program in London, Ontario offers fifth-grade children a free access pass to multiple PA opportunities at recreation facilities for an entire school year. This thesis used a mixed-methods approach to examine barriers and enablers to children’s use of those PA opportunities. In-depth interviews with recreation service providers afforded an understanding of potential factors influencing pass use. Surveys of child participants and their parents provided data on participant demographics, parental and peer support, and pass usage. Spatial ...


Mapping Community Space And Place In Mto Wa Mbu, Tanzania Through Surveys And Gis, Jessica Craigg 2017 Georgia College and State University

Mapping Community Space And Place In Mto Wa Mbu, Tanzania Through Surveys And Gis, Jessica Craigg

Georgia College Student Research Events

Cities throughout the African continent have been developing at an unprecedented pace, many of them due to the influence of the tourism industry. This is particularly true in Tanzania, a country famous for its national parks and their draw to tourists who help provide money for development. However, the only way to get the whole story on how to spend this money is through the experiences and needs of the people themselves. This study focuses on a small town in northeastern Tanzania, Mto wa Mbu, situated near Lake Manyara National Park, and its people’s perceptions of the park and ...


Introduction To Web Mapping, Sarah Watson 2017 University of Kentucky

Introduction To Web Mapping, Sarah Watson

Research Data and Scholarly Communications Committee Workshops

While most of us depend on programs like Google Maps to help us navigate the world, it barely scratches the surface of the diverse world of web mapping. In this introductory workshop, participants will learn about web mapping platforms, how digital maps are typically used, different visualization techniques for engaging users, and tips for searching and integrating data to create finished maps. A variety of web-based tools will be discussed, including Carto and OpenStreetMap. Participants will be guided through a tutorial that teaches them the basics of web mapping. No GIS or coding experience necessary.

The presentation slides are available ...


Finding, Organizing, And Creating Spatial Data, Sarah Watson 2017 University of Kentucky

Finding, Organizing, And Creating Spatial Data, Sarah Watson

Research Data and Scholarly Communications Committee Workshops

To produce a compelling and attractive map, it is necessary to have quality data. However, finding quality data and using it to prepare maps can be quite challenging. This workshop will begin with a review of different types of spatial data, how to access it, and strategies for understanding and organizing it. We will then focus on creating our own data by georeferencing scanned paper maps. Georeferencing involves assigning geographic coordinates to images (e.g., maps, aerial photos) that lack a defined coordinate system. Georeferencing helps us locate where an image is located in the world so we can effectively ...


P01. Examining The Community Food Environments For Elementary School-Aged Children In The City Of London And Middlesex County, Ontario, Catherine DuBreck 2017 Western University

P01. Examining The Community Food Environments For Elementary School-Aged Children In The City Of London And Middlesex County, Ontario, Catherine Dubreck

Western Research Forum

Background: Childhood obesity is a growing public health issue. In Canada, one in four children/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) can influence dietary habits.

Methods: Using ArcGIS, public and private elementary school addresses were geocoded, food outlets were mapped, and both junk food outlet density and the modified retail food environment index were ...


Introduction To Gis, Sarah Watson 2017 University of Kentucky

Introduction To Gis, Sarah Watson

Research Data and Scholarly Communications Committee Workshops

Do you have a research question that you would like to depict geographically? Have you ever wanted to include a map in your presentations or reports, but could not find one that suits your specific needs? This workshop will address these questions by introducing participants to Geographic Information Systems (GIS), a tool that facilitates the visualization of spatial data, geographic analysis, and the production of maps. Attendees will learn the basics of GIS terminology, explore different GIS software packages, and will walk through a hand-on tutorial focused on basic geographic analysis. No prior GIS knowledge required.

The presentation slides are ...


An Iterative 3d Gis Analysis Of The Role Of Visibility In Ancient Maya Landscapes: A Case Study From Copan, Honduras, Heather Richards-Rissetto 2017 University of Nebraska-Lincoln

An Iterative 3d Gis Analysis Of The Role Of Visibility In Ancient Maya Landscapes: A Case Study From Copan, Honduras, Heather Richards-Rissetto

Anthropology Faculty Publications

For several decades, Geographic Information Systems (GISs) have held center stage in archaeological studies of ancient landscapes. Recently, three-dimensional (3D) technologies such as airborne LiDAR and aerial photogrammetry are allowing us to acquire inordinate amounts of georeferenced 3D data to locate, map, and visualize archaeological sites within their surrounding landscapes. GIS offers locational precision, data overlay, and complex spatial analysis. Three-dimensionality adds a ground-based perspective lacking in two-dimensional GIS maps to provide archaeologists a sense of mass and space more closely attuned with human perception. This article uses comparative and iterative approaches ‘tacking back and forth’ between GIS and 3D ...


3d Tool Evaluation And Workflow For An Ecological Approach To Visualizing Ancient Socio-Environmental Landscapes: A Case Study From Copan, Honduras, Heather Richards-Rissetto, Shona Sanford-Long, Jack Kerby-Miller 2017 University of Nebraska-Lincoln

3d Tool Evaluation And Workflow For An Ecological Approach To Visualizing Ancient Socio-Environmental Landscapes: A Case Study From Copan, Honduras, Heather Richards-Rissetto, Shona Sanford-Long, Jack Kerby-Miller

Anthropology Faculty Publications

Architectural reconstructions are the centerpieces of ancient landscape visualization. When present, vegetation is relegated to the background, resulting in underutilized plant data—an integral data source for archaeological interpretation—thus limiting the capacity to take advantage of 3D visualization for studying ancient socio-environmental dynamics. Our long-term objective is to develop methods of 3D landscape visualization that have value for examining changes in land use and settlement patterns. To begin to work toward this objective, we have (1) identified 3D tools and techniques for vegetation modeling and landscape visualization, (2) evaluated the pros and cons of these tools, (3) investigated biological ...


Archaeological Gis Analysis Of Raised Field Agriculture In The Bolivian Amazon, Thomas W. Lee 2017 University of Central Florida

Archaeological Gis Analysis Of Raised Field Agriculture In The Bolivian Amazon, Thomas W. Lee

Honors in the Major Theses

Modern agricultural systems have been criticized for their detrimental effects on the environment and a general emphasis on crop yield rather than long-term sustainability. Traditional forms of agriculture may provide case-specific examples of sustainable alternatives for contemporary societies. In the seasonally inundated savannas of the Llanos de Mojos, pre-Columbian Indians piled earth into ‘large raised field platforms’ elevated high enough above the floodplain to allow crops to grow. Archaeological evidence indicates that raised field agriculture supported much larger populations than those found in the Beni today. The examination of satellite imagery has revealed more than 40,000 individual fields spread ...


Stand Clear Of The Closing Doors, Please: Transit Equity, Social Exclusion, And The New York City Subway, Taylor Novick-Finder 2017 Pitzer College

Stand Clear Of The Closing Doors, Please: Transit Equity, Social Exclusion, And The New York City Subway, Taylor Novick-Finder

Pitzer Senior Theses

The history of transportation planning in New York City has created disparities between those who have sufficient access to the public transportation network, and those who face structural barriers to traveling from their home to education, employment, and healthcare opportunities. This thesis analyzes the legacy of discriminatory policy surrounding the Metropolitan Transportation Authority (MTA) and city and state governments that have failed to support vital infrastructure improvement projects and service changes to provide multi-modal welfare to New York’s working poor. By exploring issues of transit equity as they pertain to the New York City subway system, this thesis raises ...


Using Geospatial Analysis For High School Environmental Science Education: A Case Study Of The Jane Goodall Institute's Community-Centered Conservation Approach, Madison G. Vorva 2017 Pomona College

Using Geospatial Analysis For High School Environmental Science Education: A Case Study Of The Jane Goodall Institute's Community-Centered Conservation Approach, Madison G. Vorva

Pomona Senior Theses

Given my experiences as a young conservation advocate, I saw a need to teach students the importance of interconnectedness, cultural awareness and systems-thinking skills through a spatial lens. I believe these skills are required for holistic, equitable and sustainable conservation decision-making in local and international contexts. This thesis uses geospatial tools to teach conservation ecology vocabulary and concepts from high school environmental science curriculum in two online resources. The purpose of my lesson plan is to show students how conservationists address complex conservation and land-use challenges using the Jane Goodall Institute’s community-centered conservation approach as a case-study. My hope ...


Examination Of The Potential Of Structure-From-Motion Photogrammetry And Terrestrial Laser Scanning For Rapid Nondestructive Field Measurements Of Grass Biomass, Sam D. Cooper 2017 South Dakota State University

Examination Of The Potential Of Structure-From-Motion Photogrammetry And Terrestrial Laser Scanning For Rapid Nondestructive Field Measurements Of Grass Biomass, Sam D. Cooper

Theses and Dissertations

Above ground biomass (AGB) is a parameter commonly used for assessment of grassland systems. While destructive sampling of AGB is highly accurate, it is time consuming and often precludes repeat temporal sampling or sampling in sensitive ecosystems. Consequently, a number of nondestructive techniques that relate grass structural properties to AGB have been developed. This study investigated the application of two recent technologies, Terrestrial Laser Scanning (TLS) and Structurefrom- Motion (SfM), in the development of rapid nondestructive AGB estimation of grassland plots. TLS and SfM volume metrics generated using a rasterized surface differencing method were linearly related to destructively measured total ...


Mapping Neighborhood Scale Survey Responses With Uncertainty Metrics, Charles R. Ehlschlaeger, Yizhao Gao, James D. Westervelt, Robert C. Lozar, Marina V. Drigo, Jeffrey A. Burkhalter, Carey L. Baxter, Matthew D. Hiett, Natalie R. Myers, Ellen R. Hartman 2016 University of Illinois

Mapping Neighborhood Scale Survey Responses With Uncertainty Metrics, Charles R. Ehlschlaeger, Yizhao Gao, James D. Westervelt, Robert C. Lozar, Marina V. Drigo, Jeffrey A. Burkhalter, Carey L. Baxter, Matthew D. Hiett, Natalie R. Myers, Ellen R. Hartman

Journal of Spatial Information Science

This paper presents a methodology of mapping population-centric social, infrastructural, and environmental metrics at neighborhood scale. This methodology extends traditional survey analysis methods to create cartographic products useful in agent-based modeling and geographic information analysis. It utilizes and synthesizes survey microdata, sub-upazila attributes, land use information, and ground truth locations of attributes to create neighborhood scale multi-attribute maps. Monte Carlo methods are employed to combine any number of survey responses to stochastically weight survey cases and to simulate survey cases' locations in a study area. Through such Monte Carlo methods, known errors from each of the input sources can be ...


Provenance And Credibility In Spatial And Platial Data, Grant McKenzie, Martin Raubal, Krzysztof Janowicz, Andrew Flanagin 2016 University of Maryland

Provenance And Credibility In Spatial And Platial Data, Grant Mckenzie, Martin Raubal, Krzysztof Janowicz, Andrew Flanagin

Journal of Spatial Information Science

No abstract provided.


Trajectory Data Mining: A Review Of Methods And Applications, Jean Damascène Mazimpaka, Sabine Timpf 2016 University of Augsburg

Trajectory Data Mining: A Review Of Methods And Applications, Jean Damascène Mazimpaka, Sabine Timpf

Journal of Spatial Information Science

The increasing use of location-aware devices has led to an increasing availability of trajectory data. As a result, researchers devoted their efforts to developing analysis methods including different data mining methods for trajectories. However, the research in this direction has so far produced mostly isolated studies and we still lack an integrated view of problems in applications of trajectory mining that were solved, the methods used to solve them, and applications using the obtained solutions. In this paper, we first discuss generic methods of trajectory mining and the relationships between them. Then, we discuss and classify application problems that were ...


Enhancing Building Footprints With Squaring Operations, Imran Lokhat, Guillaume Touya 2016 IGN - COGIT team

Enhancing Building Footprints With Squaring Operations, Imran Lokhat, Guillaume Touya

Journal of Spatial Information Science

Whatever the data source, or the capture process, the creation of a building footprint in a geographical dataset is error prone. Building footprints are designed with square angles, but once in a geographical dataset, the angles may not be exactly square. The almost-square angles blur the legibility of the footprints when displayed on maps, but might also be propagated in further applications based on the footprints, e.g., 3D city model construction. This paper proposes two new methods to square such buildings: a simple one, and a more complex one based on nonlinear least squares. The latter squares right and ...


Mixed Map Labeling, Maarten Löffler, Martin Nöllenburg, Frank Staals 2016 Utrecht University

Mixed Map Labeling, Maarten Löffler, Martin Nöllenburg, Frank Staals

Journal of Spatial Information Science

Point feature map labeling is a geometric visualization problem, in which a set of input points must be labeled with a set of disjoint rectangles (the bounding boxes of the label texts). It is predominantly motivated by label placement in maps but it also has other visualization applications. Typically, labeling models either use internal labels, which must touch their feature point, or external (boundary) labels, which are placed outside the input image and which are connected to their feature points by crossing-free leader lines. In this paper we study polynomial-time algorithms for maximizing the number of internal labels in a ...


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