Geographic Information Sciences Commons^™

Crater Detection Via Genetic Search Methods To Reduce Image Features, Joseph Paul Cohen

Graduate Masters Theses

Recent approaches to crater detection have been inspired by face detection's use of gray-scale texture features. Using gray-scale texture features for supervised machine learning crater detection algorithms provides better classification of craters in planetary images than previous methods. When using Haar features it is typical to generate thousands of numerical values from each candidate crater image. This magnitude of image features to extract and consider can spell disaster when the application is an entire planetary surface. One solution is to reduce the number of features extracted and considered in order to increase accuracy as well as speed. Feature subset selection …

Techniques For The Visualization Of Positional Geospatial Uncertainty, Brent A. Barré

University of New Orleans Theses and Dissertations

Geospatial data almost always contains some amount of uncertainty due to inaccuracies in its acquisition and transformation. While the data is commonly visualized (e.g. on digital maps), there are unanswered needs for visualizing uncertainty along with it. Most research on effectively doing this addresses uncertainty in data values at geospatial positions, e.g. water depth, human population, or land-cover classification. Uncertainty in the data’s geospatial positions themselves (positional uncertainty) has not been previously focused on in this regard. In this thesis, techniques were created for visualizing positional uncertainty using World Vector Shoreline as an example dataset. The techniques consist of a …

Web 2.0-Based Collaborative Multicriteria Spatial Decision Support System: A Case Study Of Human-Computer Interaction Patterns, Mohammadreza Jelokhani-Niaraki

Electronic Thesis and Dissertation Repository

The integration of GIS and Multicriteria Decision Analysis (MCDA) capabilities into the Web 2.0 platform offers an effective Multicriteria Spatial Decision Support System (MC-SDSS) with which to involve the public, or a particular group of individuals, in collaborative spatial decision making. Understanding how decision makers acquire and integrate decision-related information within the Web 2.0-based collaborative MC-SDSS has been one of the major concerns of MC-SDSS designers for a long time. This study focuses on examining human-computer interaction patterns (information acquisition behavior) within the Web 2.0-based MC-SDSS environment. It reports the results of an experimental study that investigated the effects of …

Synthesizing Population, Health, And Place, Martin Raubal, Geoffrey Jacquez, John Wilson, Werner Kuhn

Journal of Spatial Information Science

No abstract provided.

An Interactive Bibliography On Temporal Gis, Willington Siabato, Christophe Claramunt, Miguel Ángel Bernabé-Poveda

Journal of Spatial Information Science

No abstract provided.

Formalizing Spatiotemporal Knowledge In Remote Sensing Applications To Improve Image Interpretation, Christelle Pierkot, Samuel Andrés, Jean François Faure, Frédérique Seyler

Journal of Spatial Information Science

Technological tools allow the generation of large volumes of data. For example satellite images aid in the study of spatiotemporal phenomena in a range of disciplines such as urban planning environmental sciences and health care. Thus remote-sensing experts must handle various and complex image sets for their interpretations. The GIS community has undertaken significant work in describing spatiotemporal features and standard specifications nowadays provide design foundations for GIS software and spatial databases. We argue that this spatiotemporal knowledge and expertise would provide invaluable support for the field of image interpretation. As a result we propose a high level conceptual framework …

Multi-Scale Window Specification Over Streaming Trajectories, Kostas Patroumpas

Journal of Spatial Information Science

Enormous amounts of positional information are collected by monitoring applications in domains such as fleet management cargo transport wildlife protection etc. With the advent of modern location-based services processing such data mostly focuses on providing real-time response to a variety of user requests in continuous and scalable fashion. An important class of such queries concerns evolving trajectories that continuously trace the streaming locations of moving objects like GPS-equipped vehicles commodities with RFID's people with smartphones etc. In this work we propose an advanced windowing operator that enables online incremental examination of recent motion paths at multiple resolutions for numerous point …

The Semantic Similarity Ensemble, Andrea Ballatore, Michela Bertolotto, David C. Wilson

Journal of Spatial Information Science

Computational measures of semantic similarity between geographic terms provide valuable support across geographic information retrieval data mining and information integration. To date a wide variety of approaches to geo-semantic similarity have been devised. A judgment of similarity is not intrinsically right or wrong but obtains a certain degree of cognitive plausibility depending on how closely it mimics human behavior. Thus selecting the most appropriate measure for a specific task is a significant challenge. To address this issue we make an analogy between computational similarity measures and soliciting domain expert opinions which incorporate a subjective set of beliefs perceptions hypotheses and …

Semantic And Conceptual Issues In Geographic Information Systems, Eliseo Clementini, Esteban Zimanyi

Journal of Spatial Information Science

No abstract provided.

Testing Ogc Web Feature And Coverage Service Performance: Towards Efficient Delivery Of Geospatial Data, Gregory Giuliani, Alain Dubois, Pierre Lacroix

Journal of Spatial Information Science

OGC Web Feature Service (WFS) and Web Coverage Service (WCS) specifications allow interoperable access to distributed geospatial data made available through spatial data infrastructures (SDIs). To ensure that a service is sufficiently responsive to fulfill users’ expectations and requirements performance of services must be measured and monitored to track latencies bottlenecks and errors that may negatively influence its over- all quality. Despite the importance of data retrieval and access little research has been published on this topic and mostly concentrates on the usability of services when integrating distributed data sources. Considering these issues this paper extends and validates the FOSS4G …

Building A Gis Model To Assess Agritourism Potential, Brian G. Baskerville

Department of Geography: Dissertations, Theses, and Student Research

Rural areas of the world are developing and implementing tourism programs to diversify and reinvigorate their local economies. Often, these programs focus on privately-held lands in largely agricultural regions. In some countries, tourism development strategies have combined agriculture and tourism to create a new industry – agritourism. This industry, although not new in the United States, is still in its nascent stages. Before starting an agritourism enterprise, farmers and ranchers must consider the various factors that will likely influence their potential for long-term success. These factors can be grouped into 1) farm-specific factors such as an operator’s personality or the …

Examining Spring And Autumn Phenology In A Temperate Deciduous Urban Woodlot, Rong Yu

Theses and Dissertations

This dissertation is an intensive phenological study in a temperate deciduous urban woodlot over six consecutive years (2007-2012). It explores three important topics related to spring and autumn phenology, as well as ground and remote sensing phenology. First, it examines key climatic factors influencing spring and autumn phenology by conducting phenological observations four days a week and recording daily microclimate measurements. Second, it investigates the differences in phenological responses between an urban woodlot and a rural forest by employing comparative basswood phenological data. Finally, it bridges ground visual phenology and remote sensing derived phenological changes by using the Normalized Difference …

Making Graphical Information Accessible Without Vision Using Touch-Based Devices, Hari Prasath Palani

Electronic Theses and Dissertations

Accessing graphical material such as graphs, figures, maps, and images is a major challenge for blind and visually impaired people. The traditional approaches that have addressed this issue have been plagued with various shortcomings (such as use of unintuitive sensory translation rules, prohibitive costs and limited portability), all hindering progress in reaching the blind and visually-impaired users. This thesis addresses aspects of these shortcomings, by designing and experimentally evaluating an intuitive approach —called a vibro-audio interface— for non-visual access to graphical material. The approach is based on commercially available touch-based devices (such as smartphones and tablets) where hand and finger …

An Anthropological Investigation Of The Dynamic Human-Vervet Monkey (Chlorocebus Aethiops Sabaeus) Interface In St. Kitts, West Indies, Kerry M. Dore

Theses and Dissertations

Over 350 years ago, the ecology of St. Kitts was dramatically altered by the advent of sugar cane production and the introduction of a highly adaptable, invasive animal species: the vervet monkey (Chlorocebus aethiops sabaeus). This project employed both primatological and ethnoprimatological techniques to assess conflict between vervet monkeys and Kittitian farmers. Methodological tools from primatology allowed for the creation of a predictive model of monkey crop-raiding behavior. The model was highly informative about monkeys' current raiding patterns; however, viewing Kittitian farmers and vervet monkeys as interconnected through an ethnoprimatological perspective revealed the significance of history with regard to this …

Spatial Analysis Of Fatal Automobile Crashes In Nashville, Tn, 2001-2011, Yan Chen

Masters Theses & Specialist Projects

With increasing levels of motor vehicle ownership, automobile crashes have become a serious public issue in the U.S. and around the world. Knowing when, where, and how traffic accidents happen is critical in order to ensure road safety and to plan for adequate road infrastructure. There is a rich body of literature pertaining to time-related fatal crashes, most of which focuses on non-spatial factors such as a driver’s visibility at night, drinking and drug use, and road conditions. These studies provide a theoretical basis for understanding the causes of crashes from a non-spatial perspective, and a number of traffic laws …

Eastern Deciduous Forest Phenology And Vegetative Vigor Trends From 2000 To 2013, Mammoth Cave National Park, Ky, Sean Taylor Hutchison

Masters Theses & Specialist Projects

Global climate change is predicted to affect environmental systems at the midlatitudes, but the scope, severity, and outcomes of these impacts are yet to be fully understood. This study focuses on the implications of short-term climate variability for forests in central Kentucky. Using a Normalized Difference Vegetation Index (NDVI) calculated from MODerate-Resolution Imaging Spectroradiometer (MODIS) instrument data, the photosynthetic activity of vegetation at Mammoth Cave National Park (MACA) is tracked from 2000 to 2013. Three methods were employed to examine the changes and climate influences in vegetation over the study period: 1) aggregating the NDVI of the Park by year …

Bedrock Geological Map Of The Rockhouse Quadrangle, Carroll And Madison Counties, Arkansas, Douglas Eben Jones

Graduate Theses and Dissertations

A digital geologic map of the Rockhouse quadrangle, Carroll and Madison counties, Arkansas, was created on a 1:24,000 scale using ArcMap 10 and Photoshop CS4. The data obtained in the field are digitized onto the United States Geological Survey (USGS) digital raster graphic (DRG) of the Rockhouse quadrangle. The geology in the Rockhouse quadrangle consist entirely of sedimentary rocks that are Paleozoic ranging from Lower Ordovician to Mississippian in age. The Ordovician System is represented by the Cotter, Powell, Everton, and St. Peter Formations. The Cotter and Powell are the prominent bluff forming units throughout the quadrangle and along the …

Global Digital Elevation Model Accuracy Assessment In The Himalaya, Nepal, Luke G. Miles

Masters Theses & Specialist Projects

Digital Elevation Models (DEMs) are digital representations of surface topography or terrain. Collection of DEM data can be done directly through surveying and taking ground control point (GCP) data in the field or indirectly with remote sensing using a variety of techniques. The accuracies of DEM data can be problematic, especially in rugged terrain or when differing data acquisition techniques are combined. For the present study, ground data were taken in various protected areas in the mountainous regions of Nepal. Elevation, slope, and aspect were measured at nearly 2000 locations. These ground data were imported into a Geographic Information System …

Analysis Of The Spatial And Temporal Dynamics Of Street Hawking: A Case Study Of The Accra Metropolitan Area, Alex Owusu Barimah, Stephen Abrokwah, Stephen Frimpong

Stephen Frimpong

To the street hawker, it is a means of making a living but to the managers of the metropolis, street hawking is a menace. These differences in perception have led to a game plan tied to spatio-temporal diurnal traffic regimes. While the city authorities plan may be to evict the street hawkers, the plan of the hawkers is to outwit the city authorities through make-shift hawking patterns in order to make a living. The difference in the two positions can be characterized by the city manager’s need for clean and less congested city streets, and the hawker’s desire to sell …

Imls Place Grant: Campus Journal Press Release, Place Project Group

PLACE Project

Campus Journal press release describing the PLACE (Position-based Location Archive Coordinate Explorer) project that is funded by the Institute for Museum and Library Services. The University of New Hampshire (UNH) library partnered with the UNH Earth Systems Research Center to develop a geospatial interface that is searchable by geospatial coordinates.

Unh Library Imls Place Grant News Announcement, Place Project Group

PLACE Project

UNH Library Website News announcement about the IMLS Grant for PLACE, November 7, 2014.

Assessing Cultural Ecosystem Services Using Gis-Based Landscape Values Mapping. Case Study: Olympic Peninsula Human Ecology Mapping Project, Diane Besser, Rebecca J. Mclain, Lee Cerveny, David Banis

Institute for Sustainable Solutions Publications and Presentations

This presentation focuses on the Olympic Peninsula mapping project objectives:

• Develop and test a method for mapping sociocultural values at a Bioregional scale
• Test techniques for analyzing spatialized sociocultural values data
• Explore ways to integrate spatialized sociocultural values into forest management planning

Engaging Stakeholders In Ecosystem Service Assessment Under Climate Change And Urban Development Scenarios, Heejun Chang, David E. Ervin, Wes Hoyer, Mike Psaris, Ken Lyons, Emily D. Dietrich, Samantha Hamlin, John Lambrinos, Tammy Winfield, Bobby Cochran

Geography Faculty Publications and Presentations

This presentation focuses on how scientists can engage stakeholders in ecosystem service assessment.

Moving Forward: Next Steps For Confronting Increased Flood Risks, Molly Mitchell

October 2, 2013: Quantifying Risks and Moving Forward

No abstract provided.

Mius News : Maps And Imagery User Services @ Fiu Green Library: Vol. 5 Issue 1 Fall 2013, Matthew Toro, Evan Cook, Peter Harlem

MIUS News

Florida International University's Fall 2013 Map and User Imagery Services Newsletter

Vertical Color Maps: A Data Independent Alternative To Floor Plan Maps, Alexander Salveson Nossum, Nicholas A. Giudice, Hengshan Li

Spatial Information Science and Engineering Faculty Scholarship

Location sharing in indoor environments is limited by the sparse availability of indoor positioning and lack of geographical building data. Recently, several solutions have begun to implement digital maps for use in indoor space. The map design is often a variant of floor-plan maps. Whereas massive databases and GIS exist for outdoor use, the majority of indoor environments are not yet available in a consistent digital format. This dearth of indoor maps is problematic, as navigating multistorey buildings is known to create greater difficulty in maintaining spatial orientation and developing accurate cognitive maps. The development of standardized, more intuitive indoor …

[Sabbatical Report], Jun Yan

Sabbatical Reports

During my sabbatical leave (Fall 2013), I have mainly worked on the project to explore the dynamics of the U.S. domestic airline market. This project focuses on geographic changes in the U.S. domestic airline market over the past two decades (1993-2012) at the level of city-pair directional markets. The primary goal for this project during my sabbatical is to prepare and process data for further analysis in the coming years.

Imls Place Grant: Press Release Abstract 1, Place Project Group

PLACE Project

Early press release describing the PLACE (Position-based Location Archive Coordinate Explorer) project that is funded by the Institute for Museum and Library Services. The University of New Hampshire (UNH) library partnered with the UNH Earth Systems Research Center to develop a geospatial interface that is searchable by geospatial coordinates.

Manifold Learning Based Spectral Unmixing Of Hyperspectral Remote Sensing Data, Jun-Hwa Chi

Open Access Dissertations

Nonlinear mixing effects inherent in hyperspectral data are not properly represented in linear spectral unmixing models. Although direct nonlinear unmixing models provide capability to capture nonlinear phenomena, they are difficult to formulate and the results are not always generalizable. Manifold learning based spectral unmixing accommodates nonlinearity in the data in the feature extraction stage followed by linear mixing, thereby incorporating some characteristics of nonlinearity while retaining advantages of linear unmixing approaches. Since endmember selection is critical to successful spectral unmixing, it is important to select proper endmembers from the manifold space. However, excessive computational burden hinders development of manifolds for …

Riga: A Rich Internet Geospatial Analytics Application For Area-Based Data, 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 RIGA, a rich internet geospatial analytics …