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Using Mobility Data As Proxy For Measuring Urban Vitality, Patrizia Sulis, Ed Manley, Chen Zhong, Michael Batty 2018 UCL

Using Mobility Data As Proxy For Measuring Urban Vitality, Patrizia Sulis, Ed Manley, Chen Zhong, Michael Batty

Journal of Spatial Information Science

In this paper, we propose a computational approach to Jane Jacobs' concept of diversity and vitality, analyzing new forms of spatial data to obtain quantitative measurements of urban qualities frequently employed to evaluate places. We use smart card data collected from public transport to calculate a diversity value for each research unit. Diversity is composed of three dynamic attributes: intensity, variability, and consistency, each measuring different temporal variations of mobility flows. We then apply a regression model to establish the relationship between diversity and vitality, using Twitter data as a proxy for human activity in urban space. Final results (also ...


Locally-Varying Explanations Behind The United Kingdom's Vote To Leave The European Union, Roger Beecham, Aidan Slingsby, Chris Brunsdon 2018 The University of Maine

Locally-Varying Explanations Behind The United Kingdom's Vote To Leave The European Union, Roger Beecham, Aidan Slingsby, Chris Brunsdon

Journal of Spatial Information Science

Explanations behind area-based (Local Authority-level) voting preference in the 2016 referendum on membership of the European Union are explored using aggregate-level data. Developing local models, special attention is paid to whether variables explain the vote equally well across the country. Variables describing the post-industrial and economic "successfulness" of Local Authorities most strongly discriminate variation in the vote. To a lesser extent this is the case for variables linked to "metropolitan" and "big city" contexts, which assist the Remain vote, those that distinguish more traditional and "nativist" values, assisting Leave, and those loosely describing material outcomes, again reinforcing Leave. Whilst variables ...


Modeling Movement Probabilities Within Heterogeneous Spatial Fields, Jed A. Long 2018 The University of Maine

Modeling Movement Probabilities Within Heterogeneous Spatial Fields, Jed A. Long

Journal of Spatial Information Science

Recent efforts have focused on modeling the internal structure of space-time prisms to estimate the unequal movement opportunities within. This paper further develops this area of research by formulating a model for field-based time geography that can be used to probabilistically model movement opportunities conditioned on underlying heterogeneous spatial fields. The development of field-based time geography draws heavily on well-established methods for cost-distance analysis, common to most GIS software packages. The field-based time geographic model is compared with two alternative approaches that are commonly employed to estimate probabilistic space-time prisms - (truncated) Brownian bridges and time geographic kernel density estimation. Using ...


Determining The Optimal Spatial And Temporal Thresholds That Maximize The Predictive Accuracy Of The Prospective Space-Time Scan Statistic (Pstss) Hotspot Method, Monsuru Adepeju, Andrew Evans 2018 The University of Maine

Determining The Optimal Spatial And Temporal Thresholds That Maximize The Predictive Accuracy Of The Prospective Space-Time Scan Statistic (Pstss) Hotspot Method, Monsuru Adepeju, Andrew Evans

Journal of Spatial Information Science

The spatial and temporal thresholds (K and T) are two key parameters that control the performance of the prospective space-time scan statistical (PSTSS) hotspot method. This study proposes an objective function approach, in which the optimal values of K and T that maximize the mean hit rate (a measure of predictive accuracy), are determined. The proposed approach involves sweeping through a range of values defined for each parameter and monitors their impacts on the mean hit rate. A case study of the crime data sets of the South Chicago area is presented in which 100 one-day consecutive predictions are carried ...


25 Years Of Gisruk, Jonny Huck 2018 The University of Maine

25 Years Of Gisruk, Jonny Huck

Journal of Spatial Information Science

Special Feature Editorial


Parameter-Free Aggregation Of Value Functions From Multiple Experts And Uncertainty Assessment In Multi-Criteria Evaluation, Benjamin Rohrbach, Robert Weibel, Patrick Laube 2018 The University of Maine

Parameter-Free Aggregation Of Value Functions From Multiple Experts And Uncertainty Assessment In Multi-Criteria Evaluation, Benjamin Rohrbach, Robert Weibel, Patrick Laube

Journal of Spatial Information Science

This paper makes a threefold contribution to spatial multi-criteria evaluation (MCE): firstly by presenting a new method concerning value functions, secondly by comparing different approaches to assess the uncertainty of a MCE outcome, and thirdly by presenting a case-study on land-use change. Even though MCE is a well-known methodology in GIScience, there is a lack of practicable approaches to incorporate the potentially diverse views of multiple experts in defining and standardizing the values used to implement input criteria. We propose a new method that allows generating and aggregating non-monotonic value functions, integrating the views of multiple experts. The new approach ...


A Grounding-Based Ontology Of Data Quality Measures, Franz-Benjamin Mocnik, Amin Mobasheri, Luisa Griesbaum, Melanie Eckle, Clemens Jacobs, Carolin Klonner 2018 Universität Heidelberg

A Grounding-Based Ontology Of Data Quality Measures, Franz-Benjamin Mocnik, Amin Mobasheri, Luisa Griesbaum, Melanie Eckle, Clemens Jacobs, Carolin Klonner

Journal of Spatial Information Science

Data quality and fitness for purpose can be assessed by data quality measures. Existing ontologies of data quality dimensions reflect, among others, which aspects of data quality are assessed and the mechanisms that lead to poor data quality. An understanding of which source of information is used to judge about data quality and fitness for purpose is, however, lacking. This article introduces an ontology of data quality measures by their grounding, that is, the source of information to which the data is compared to in order to assess their quality. The ontology is exemplified with several examples of volunteered geographic ...


Accuracy Evaluation Of The Canadian Openstreetmap Road Networks, Hongyu Zhang, Jacek Malczewski 2018 The University of Western Ontario

Accuracy Evaluation Of The Canadian Openstreetmap Road Networks, Hongyu Zhang, Jacek Malczewski

International Journal of Geospatial and Environmental Research

Volunteered geographic information (VGI) has been applied in many fields such as participatory planning, humanitarian relief and crisis management. One of the reasons for popularity of VGI is its cost-effectiveness. However, the coverage and accuracy of VGI cannot be guaranteed. The issue of geospatial data quality in the OpenStreetMap (OSM) project has become a trending research topic because of the large size of the dataset and the multiple channels of data access. This paper focuses on a national study of the Canadian OSM road network data for the assessment of completeness, positional accuracy, attribute accuracy, semantic accuracy and lineage. The ...


Spatial Epidemiology Of Summer Trauma In Scott County, Ia: Use Of Gis To Identify Trauma Incidence In Urban And Rural Areas, Matthew Koch 2018 Augustana College, Rock Island Illinois

Spatial Epidemiology Of Summer Trauma In Scott County, Ia: Use Of Gis To Identify Trauma Incidence In Urban And Rural Areas, Matthew Koch

Celebration of Learning

Traumatic injury is a blanket term referring to acute physical injuries which pose an immediate threat to life and limb, requiring urgent medical care. Unintentional injuries are the fifth-leading cause of death, and fatal injuries cost the American economy over $84 billion annually in lost work and medical costs. Scott County, IA, is a unique environment for trauma research because it served by a single trauma center and features within its 458 square miles distinct urban and rural populations. Patient data from the trauma registry, including age, race, and mechanism of injury (MOI) was combined with the corresponding spatial data ...


Samsts Satellite Time Series Gap Filling Source Codes - Landsat, Lin Yan, David P. Roy 2018 South Dakota State University

Samsts Satellite Time Series Gap Filling Source Codes - Landsat, Lin Yan, David P. Roy

SAMSTS Satellite Time Series Gap Filling Source Codes

  • SAMSTS is open-source software (coded in C) for gap filling of Landsat multispectral time series developed by Drs. Lin Yan and David Roy.
  • SAMSTS 1.0 release includes source codes, user manual and test data.
  • The test data are year-2013 time series of Landsat 7 ETM+ and Landsat 8 OLI ARD surface reflectance products (http://landsat.usgs.gov/ard) over Kansas and Iowa. Each ARD tile is composed of 5000 x 5000 30m pixels with six bands (blue, red, green, NIR, SWIR 1, SWIR 2).
  • Major Software functionality:
    • Automatic gap filling of Landsat multispectral time series caused by clouds, shadows ...


Mapping Wyoming's Future: A Gis-Based Mapping Analysis Of Wyoming's Industry Assets, Sam Mallory 2018 University of Wyoming

Mapping Wyoming's Future: A Gis-Based Mapping Analysis Of Wyoming's Industry Assets, Sam Mallory

Honors Theses AY 17/18

To support economic planning and development in Wyoming, the University of Wyoming (UW), the Wyoming Geographic Information Science Center (WyGISC) and the Wyoming Business Council (WBC) developed a series of over 150 maps intended to communicate various industry assets available in the state to leverage growth and development of associated industry sectors. This paper discusses the context and objectives of this project, the geographic information systems methodology developed for the creation of these maps, a critique of the maps, as well as a demonstration of their intended use.


Decisions Set In Stone: Spatial Analyses Of Ozark Rock Art Sites, Elements, And Motifs With Gis, Jordan Lee Schaefer 2018 University of Arkansas, Fayetteville

Decisions Set In Stone: Spatial Analyses Of Ozark Rock Art Sites, Elements, And Motifs With Gis, Jordan Lee Schaefer

Theses and Dissertations

This thesis uses Geographic Information Systems (GIS) to spatially analyze rock art distributions in the Salem Plateau section of the Arkansas Ozarks. Statistical tests, such as chi-square and t-testing, are applied to provide an objective view of rock art patterning in relation to the overall landscape. The data collected from these methods allow one to discern the locational preferences for rock art, which potentially reveal cultural details about the people involved with its creation. Multiple analytical perspectives are applied throughout, initially focusing on comparisons with expected values and random points. Later statistical tests use bluff shelter distributions as reference data ...


Gis Modeling Of The Prominent Geohazards In Arkansas, Kyle Walker Rowden 2018 University of Arkansas, Fayetteville

Gis Modeling Of The Prominent Geohazards In Arkansas, Kyle Walker Rowden

Theses and Dissertations

The State of Arkansas is prone to numerous geohazards. This thesis is a twofold study of prominent geohazards in Arkansas: the first fold includes a novel triggerless approach for mass wasting susceptibility modeling applied to the Boston Mountains in NW Arkansas, and the second fold is a GIS-based regression modeling of the extreme weather patterns at the state level. Each study fold is presented in this thesis as a separate chapter embracing a published peer-reviewed paper. In the first paper, I have used the analytical hierarchy process to assign preliminary statistical weights to the most cogent variables influencing mass wasting ...


Towards Quantifying Relevant Land Cover Change: A Case Study In The Central Flyway Of The Monarch Butterfly, Hanna Lenee Ford 2018 University of Arkansas, Fayetteville

Towards Quantifying Relevant Land Cover Change: A Case Study In The Central Flyway Of The Monarch Butterfly, Hanna Lenee Ford

Theses and Dissertations

Over the past 20 years notable decreases in monarch butterfly populations have led researchers to begin evaluating the landscape for changes and seeking out opportunities for enacting conservation programs to better support their survival. The monarch butterfly has recently come under consideration for listing under the Endangered Species Act which has created a need for a more informed view of the landscape through which the migrate and breed, the central United States. In this research three spatially-explicit models are explored using the most applicable datasets currently available to address pressing policy and land manager decisions regarding monarch butterfly and pollinator ...


Social Organization And Environmental Patterning At Tel Abu Shusha: An Integrated Spatial Approach To Survey Archaeology, Seth Price 2018 University of Arkansas, Fayetteville

Social Organization And Environmental Patterning At Tel Abu Shusha: An Integrated Spatial Approach To Survey Archaeology, Seth Price

Theses and Dissertations

Tel Abu Shusha, located in the Jezreel Valley of Palestine, is a large-scale archaeological site possibly identified as the cities of Biblical Gaba or Roman Gaba Hippaeon/Gaba Philippi. Surface archaeological survey of the surrounding area, conducted by the Jezreel Valley Regional Project during 2017, revealed extensive assemblages of visible settlement features dating primarily to middle and late Islamic periods. This research seeks to answer questions of settlement decision-making and societal organization, by integrating archaeological, textual, environmental, and geospatial data sources. In addition to visual interpretation, Kolmogorov-Smirnov nonparametric tests are used to gain insight on environmental settlement preferences; Ripley’s ...


Creating Web Maps Of Forest Restoration Plots At Iracambi Atlantic Rainforest Research Center, Minas Gerais, Brazil, Daniel Lassila 2018 Clark University

Creating Web Maps Of Forest Restoration Plots At Iracambi Atlantic Rainforest Research Center, Minas Gerais, Brazil, Daniel Lassila

International Development, Community and Environment (IDCE)

The purpose of this report is to provide a detailed account, discussion, and analysis of my internship at Iracambi Atlantic Rainforest Research Center in Minas Gerais, Brazil during the summer of 2017, where I worked under the direction of GIS Supervisor Mr. Cliff Jones. The central focus of my work dealt with consolidating existing GIS data on the organization’s rainforest restoration effort into a single normalized database - based on the Atlantic Forest Restoration Pact, creating a structure for future forest restoration volunteers including enabling offline field collection using Collector for ArcGIS, then creating an ArcGIS Online web map based ...


The Geography Of Opiate Addiction, Overdose, And Treatment In Tennessee, David Stanley Leventhal, Meghan Russell, Kali Williams 2018 University of Tennessee, Knoxville

The Geography Of Opiate Addiction, Overdose, And Treatment In Tennessee, David Stanley Leventhal, Meghan Russell, Kali Williams

EURēCA: Exhibition of Undergraduate Research and Creative Achievement

Opioid addiction and overdose has become a national epidemic in the United States over the past 30 years. According to the Centers for Disease Control and Prevention, more than 20,000 Americans died from prescription drugs alone in 2014. Tennessee ranks especially high in the number of opioid prescriptions and overdoses when compared to the rest of the US. The Volunteer State is one of only 13 where doctors issued between 96-143 opioid prescriptions per 100 people. This project maps opiate prescription rates and overdose death rates in Tennessee to identify trends in the geospatial, socioeconomic, and demographic makeup of ...


Landsat Sentinel Registration Source Codes: Linux, Lin Yan, David P. Roy 2018 South Dakota State University

Landsat Sentinel Registration Source Codes: Linux, Lin Yan, David P. Roy

Landsat Sentinel Registration Source Codes

  • LSReg is open-source software (coded in C) for precise automatic registration of Landsat-8 (L8) Collection-1 and Sentinel-2 (S2) Level 1C products, including L8<->S2, S2<->S2 and L8<->L8.
  • Version 2.0 is a Linux version. The main download includes the source codes and manual.The “Additional Files” include the test data and the outputs generated from the test data by LSReg 2.0.
  • Major functionalities of the software:
    • Flexibility in handling input/output images resolutions and spatial coverages.
    • Image registration supporting translation, affine and 2nd order polynomial transformations.
    • Classic implementation of least-squares matching (LSM) with up to 0 ...


The Devil You Don’T Know: A Spatial Analysis Of Crime At Newark’S Prudential Center On Hockey Game Days, Justin Kurland, Eric Piza 2018 Institute for Security and Crime Science - University of Waikato

The Devil You Don’T Know: A Spatial Analysis Of Crime At Newark’S Prudential Center On Hockey Game Days, Justin Kurland, Eric Piza

Journal of Sport Safety and Security

Inspired by empirical research on spatial crime patterns in and around sports venues in the United Kingdom, this paper sought to measure the criminogenic extent of 216 hockey games that took place at the Prudential Center in Newark, NJ between 2007-2016. Do games generate patterns of crime in the areas beyond the arena, and if so, for what type of crime and how far? Police-recorded data for Newark are examined using a variety of exploratory methods and non-parametric permutation tests to visualize differences in crime patterns between game and non-game days across all of Newark and the downtown area. Change ...


Qgis: Download And Export Openstreetmap Data, Austin Dunn, Bailey Hanson, Christopher J. Seeger 2018 Iowa State University

Qgis: Download And Export Openstreetmap Data, Austin Dunn, Bailey Hanson, Christopher J. Seeger

GIS and Mapping Task Sheets

This task sheet presents an open source workflow that uses crowd-sourced data from OpenStreetMap (OSM) to create GeoJSON files that can be used on web mapping platforms like leaflet or mapbox. Using free QGIS software, users can download data from OSM, and then filter and edit it within the QGIS environment. The data can be used for analysis, in map layouts, or exported to various file formats, including GeoJSON.


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