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832 full-text articles. Page 1 of 29.

Mobile-Based Sidewalk Inventory App For Smart Communities, Health, And Safety, Madhav Erraguntla, Dursun Delen, Rupesh K. Agrawal, Karthic Madanagopal, Richard Mayer 2017 Knowledge Based Systems Inc.

Mobile-Based Sidewalk Inventory App For Smart Communities, Health, And Safety, Madhav Erraguntla, Dursun Delen, Rupesh K. Agrawal, Karthic Madanagopal, Richard Mayer

Suburban Sustainability

As the United States and other nations strive to cope with the obesity epidemic (NCHS, 2015), progressive communities are developing sidewalk infrastructure to promote physical activity and health. The Center for Disease Control (CDC) recommends that community-based interventions like neighborhood walk, bike programs etc. have shown to be effective in promoting physical activity and health. Smart cities are embracing the development of community trails and promoting their use to increase physical activity among youth and adults. System implementation, data collection, and analysis were performed from January 2015 through July 2015. To promote these objectives, communities and cities need accurate information ...


Urban Multi-Scale Environmental Predictor - An Extensive Tool For Climate Services In Urban Areas, Fredrik Lindberg, Sue Grimmond, Andrew Gabey, Bei Huang, Christoph W. Kent, Ting Sun, Natalie E. Theeuwes, Leena Järvi, Helen Ward, Izzy Capel-Timms, YY Chang, Per Jonsson, Niklas Krave, Dongwei Liu, D Meyer, K Frans G. Olofson, Jian-Guo Tan, Dag Wästberg, Lingbo Xue, Zhe Zhang 2017 Department of Earth Sciences, University of Gothenburg, Gothenburg, Sweden

Urban Multi-Scale Environmental Predictor - An Extensive Tool For Climate Services In Urban Areas, Fredrik Lindberg, Sue Grimmond, Andrew Gabey, Bei Huang, Christoph W. Kent, Ting Sun, Natalie E. Theeuwes, Leena Järvi, Helen Ward, Izzy Capel-Timms, Yy Chang, Per Jonsson, Niklas Krave, Dongwei Liu, D Meyer, K Frans G. Olofson, Jian-Guo Tan, Dag Wästberg, Lingbo Xue, Zhe Zhang

Free and Open Source Software for Geospatial (FOSS4G) Conference Proceedings

The city based climate service tool UMEP (Urban Multi-scale Environmental Predictor) is a coupled modelling system that combines models essential for urban climate processes and is developed as an extensive QGIS plugin. An application is presented to illustrate its potential, specifically of the identification of heat waves and cold waves in cities. The tool has broad utility for applications related to outdoor thermal comfort, urban energy consumption, climate change mitigation etc. It includes tools to: enable users to input atmospheric and surface data from multiple sources, prepare meteorological data for use in urban areas, undertake simulations and consider scenarios, and ...


Effect Of Land Use Change On Contamination Factors And Degrees Of Contamination In Soil Of Abeokuta And Shagamu In Ogun State, Nigeria, F O. Ogundele, T S. Adewale, G N. Njar 2017 Lagos State University, Ojo, Lagos, Nigeria.

Effect Of Land Use Change On Contamination Factors And Degrees Of Contamination In Soil Of Abeokuta And Shagamu In Ogun State, Nigeria, F O. Ogundele, T S. Adewale, G N. Njar

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

The study evaluated the ecological risk index of heavy metal accumulation in the soil of Abeokuta and Shagamu in Ogun State, Nigeria. The quantitative research approach was employed to collect surface soil samples directly from the field across 10 different land uses in two locations. Data was obtained by randomly collecting 60 surface (0 – 15cm) soil samples (30 from Abeokuta and 30 from Shagamu) from three points in each land use types with the aid of a soil auger and analysed for Zn, Fe, Pb, Co. Cu. Cr, Mn and Ni using Atomic Absorption Spectrophotometer (AAS) technique. Contamination factor (Cf ...


Desert Pool {If Every Desert Was Once A Sea}, Karen Miranda Abel 2017 York University

Desert Pool {If Every Desert Was Once A Sea}, Karen Miranda Abel

The Goose

Desert Pool {If every desert was once a sea} is a site-specific art project by Canadian artist Karen Miranda Abel completed in 2016 while artist-in-residence at Joya: arte + ecología, an arts-led research centre situated in an alpine desert within a national park in southern Spain. The elemental installation represents an envisioning of the ancient sea that occupied the Sierra de María-Los Vélez Natural Park millions of years before the current desert ecology, a time when its highest mountain peaks may have been islands.


Examination Of Sentinel-2a Multi-Spectral Instrument (Msi) Reflectance Anisotropy And The Suitability Of A General Method To Normalize Msi Reflectance To Nadir Brdf Adjusted Reflectance, David P. Roy, Jian Li, Hankui Zhang, Lin Yan Dr., Haiyan Huang, Zhongbin Li 2017 South Dakota State University

Examination Of Sentinel-2a Multi-Spectral Instrument (Msi) Reflectance Anisotropy And The Suitability Of A General Method To Normalize Msi Reflectance To Nadir Brdf Adjusted Reflectance, David P. Roy, Jian Li, Hankui Zhang, Lin Yan Dr., Haiyan Huang, Zhongbin Li

GSCE Faculty Publications

The Sentinel-2A multi-spectral instrument (MSI) acquires multi-spectral reflective wavelength observations with directional effects due to surface reflectance anisotropy and changes in the solar and viewing geometry. Directional effects were examined by considering two ten day periods of Sentinel-2A data acquired close to the solar principal and orthogonal planes over approximately 20° × 10° of southern Africa. More than 6.6 million (January 2016) and 10.6 million (April 2016) pairs of reflectance observations sensed 3 or 7 days apart in the forward and backscatter directions in overlapping Sentinel-2A orbit swaths were considered. The Sentinel-2A data were projected into the MODIS sinusoidal ...


The Bicycle, The Unsuitable Substitute:A Feasibility Study Based In Fayetteville, Ar Using A Bicycle As A Year-Round Replacement For An Automobile, Jamey Voorhees 2017 University of Arkansas, Fayetteville

The Bicycle, The Unsuitable Substitute:A Feasibility Study Based In Fayetteville, Ar Using A Bicycle As A Year-Round Replacement For An Automobile, Jamey Voorhees

Theses and Dissertations

Can a bicycle can be used in place of an automobile for everyday transportation and commuting needs? Fayetteville, Arkansas is a bicycle friendly and they plan continue to expand the current trail system improve other components in the future. Alternative transportation forms like the bicycle are important but only if bikes are integrated into traffic which needs to be done in some way that all involved understand their place in the system. By actively participating in this system I have attempted to show that a bicycle is just not feasible as a form of daily transportation in a city like ...


A Global Analysis Of Sentinel-2a, Sentinel-2b And Landsat-8 Data Revisit Intervals And Implications For Terrestrial Monitoring, Jian Li, David P. Roy 2017 South Dakota State University

A Global Analysis Of Sentinel-2a, Sentinel-2b And Landsat-8 Data Revisit Intervals And Implications For Terrestrial Monitoring, Jian Li, David P. Roy

GSCE Faculty Publications

Combination of different satellite data will provide increased opportunities for more frequent cloud-free surface observations due to variable cloud cover at the different satellite overpass times and dates. Satellite data from the polar-orbiting Landsat-8 (launched 2013), Sentinel-2A (launched 2015) and Sentinel-2B (launched 2017) sensors offer 10 m to 30 m multi-spectral global coverage. Together, they advance the virtual constellation paradigm for mid-resolution land imaging. In this study, a global analysis of Landsat-8, Sentinel-2A and Sentinel-2B metadata obtained from the committee on Earth Observation Satellite (CEOS) Visualization Environment (COVE) tool for 2016 is presented. A global equal area projection grid defined ...


Using The 500 M Modis Land Cover Product To Derive A Consistent Continental Scale 30 M Landsat Land Cover Classification, Hankui Zhang, David P. Roy 2017 South Dakota State University

Using The 500 M Modis Land Cover Product To Derive A Consistent Continental Scale 30 M Landsat Land Cover Classification, Hankui Zhang, David P. Roy

GSCE Faculty Publications

Classification is a fundamental process in remote sensing used to relate pixel values to land cover classes present on the surface. Over large areas land cover classification is challenging particularly due to the cost and difficulty of collecting representative training data that enable classifiers to be consistent and locally reliable. A novel methodology to classify large volume Landsat data using high quality training data derived from the 500 m MODIS land cover product is demonstrated and used to generate a 30 m land cover classification for all of North America between 20°N and 50°N. Publically available 30 m ...


The Geography Of Glaciers And Perennial Snowfields In The American West, Andrew G. Fountain, Bryce Glenn, Hassan J. Basagic 2017 Portland State University

The Geography Of Glaciers And Perennial Snowfields In The American West, Andrew G. Fountain, Bryce Glenn, Hassan J. Basagic

Geology Faculty Publications and Presentations

A comprehensive mid-20th century inventory of glaciers and perennial snowfields (G&PS) was compiled for the American West, west of the 100° meridian. The inventory was derived from U.S. Geological Survey 1:24,000 topographic maps based on aerial photographs acquired during 35 years, 1955–1990, of which the first 20 years or more was a cool period with little glacier change. The mapped features were filtered for those greater than 0.01 km2. Results show that 5036 G&PS (672 km2, 14 km3) populate eight states, of which about 1276 (554 km2, 12 km3) are glaciers. Uncertainty is ...


Relationships Between Vegetation Characteristics And Soil Erosion In The Rainforest Zone Of Southern Nigeria, Anthony I. Iwara, E E. Ewa, G N. Njar, S O. Maduka 2017 University of Calabar

Relationships Between Vegetation Characteristics And Soil Erosion In The Rainforest Zone Of Southern Nigeria, Anthony I. Iwara, E E. Ewa, G N. Njar, S O. Maduka

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

This study was carried out to examine the relationships between vegetation characteristics and soil erosion (runoff and sediment loss) in abandoned farmlands of 3-year old, 5-year old, 10-year old and a cultivated farmland in a part of the rainforest zone southern Nigeria. Field measurements of rainfall producing runoff and sediment were carried out from March to November in 2012 rainy and cropping season. Pearson’s correlation result showed that on the cultivated farmland, crown cover positively and significantly correlated with runoff (r = 0.652, p<0.01). The vegetation characteristics measured on the respective fallows jointly explained 53.7, 73 ...


Assessment Of Heavy Metal Sources Across Urban Transportation Facilities In Lagos Metropolis, Nigeria, Olakunle F. Ogundele, I A. Tiamiyu, Anthony I. Iwara 2017 Lagos State University, Ojo, Lagos, Nigeria.

Assessment Of Heavy Metal Sources Across Urban Transportation Facilities In Lagos Metropolis, Nigeria, Olakunle F. Ogundele, I A. Tiamiyu, Anthony I. Iwara

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

Multivariate statistical tools were employed to identify the sources of heavy metal introduction in soils across urban transportation facilities (roadside, railway, canal, airport, warehouse and bus stop) in Lagos Metropolis, Nigeria. Data for the study was obtained by collecting 30 surface soil samples (0 – 15cm) across 6 transportation facilities. Data obtained was taken to the laboratory for analysis of Cd, Cr, Cu, Fe, Ni, Pb and Zn using Atomic Absorption Spectrophotometer (AAS) technique. Result showed that four principal components (PCA) were identified as responsible for the data structure explaining 83.5% of the total variance in the data set of ...


Comparative Analysis Of Heavy Metal Status In Different Groundwater Sources In Kuje Town, Abuja, Nigeria, Chup C. D, Charles A. Iyanya 2017 University of Abuja, Nigeria

Comparative Analysis Of Heavy Metal Status In Different Groundwater Sources In Kuje Town, Abuja, Nigeria, Chup C. D, Charles A. Iyanya

Confluence Journal of Environmental Studies (CJES), Kogi State University, Nigeria

The study examined heavy metal status of groundwater sources in Kuje Town, Abuja Nigeria. Sixteen (16) groundwater samples were randomly collected from boreholes and wells within the study area and analyzed for 5 heavy metal parameters using standard laboratory procedures Data obtained from the laboratory analysis was analyzed using tables, averages, standard deviation and Independent Samples test. Result showed that the mean values of Manganese (Mn), copper (Cu), zinc (Zn) and iron (Fe) for borehole water were 0.049, 0.118, 0.065 and 0.141mg/l, while those of well water were 0.081, 0.270, 0.100 and ...


Wilket Creek: Urbanization, Geomorphology, Policy, And Design, Danielle Barr 2017 The University of Western ONtario

Wilket Creek: Urbanization, Geomorphology, Policy, And Design, Danielle Barr

Electronic Thesis and Dissertation Repository

The understanding of the morphology of an urbanized channel is currently limited to a ‘black box’ understanding in that the main driving force of morphological change is hydrologic. This study aimed to expand our understanding of urbanized channels by conducting a socio-geomorphological investigation; that is, the natural and policy-driven events and processes leading to the current channel form. A fluvial audit including historical analysis and fieldwork was conducted in Wilket Creek, a southern Ontario urbanized channel, along with a review of provincial and municipal policy and reports. Overall, it was concluded that the current morphology of Wilket Creek is the ...


Comparisons Of Global Land Surface Seasonality And Phenology Derived From Avhrr, Modis And Viirs Data, Xiaoyang Zhang 2017 South Dakota State University

Comparisons Of Global Land Surface Seasonality And Phenology Derived From Avhrr, Modis And Viirs Data, Xiaoyang Zhang

Comparisons of Global Land Surface Seasonality and Phenology Derived from AVHRR, MODIS and VIIRS data

The data set in this collection is for the paper Comparisons of Global Land Surface Seasonality and Phenology Derived from AVHRR, MODIS and VIIRS Data which will be published in the "Journal of Geophysical Research: Biogeosciences."


The Anthropocene, Overview, scott w. schwartz 2017 CUNY Graduate Center

The Anthropocene, Overview, Scott W. Schwartz

Open Educational Resources

This presentation offers an overview of the developing concept of The Anthropocene -- a term coined to describe our current geological epoch, in which human impact on the planet will leave a permanent trace.


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 ...


Environmental Justice And Gis: A Comparison Of Three Gis Methods For Estimating Vulnerable Population Exposed To Brownfield Pollution In Portland, Oregon, Kyle Goodman 2017 Portland State University

Environmental Justice And Gis: A Comparison Of Three Gis Methods For Estimating Vulnerable Population Exposed To Brownfield Pollution In Portland, Oregon, Kyle Goodman

Geography Masters Research Papers

This project compares three GIS techniques that estimate populations who are potentially affected by environmental contamination in Portland, Oregon. All three GIS techniques utilize polygon containment to estimate populations potentially exposed to pollutants based on block level census data. In this study, multiple buffer distances at half-mile increments were used across all three techniques. Circular Euclidean distance buffers surrounding a known contaminated property, such as documented brownfields, approximate the contamination zone. Accurate estimates for populations exposed to harmful environmental conditions could provide a better understanding of environmental justice issues. The specific research questions were: 1) Are the population estimates sensitive ...


Where The Sidewalk Ends: Reimagining Urban Place And Governance In Semarang, Indonesia, Emmaleah K. Jones 2017 College of William and Mary

Where The Sidewalk Ends: Reimagining Urban Place And Governance In Semarang, Indonesia, Emmaleah K. Jones

Undergraduate Honors Theses

Purpose: This project analyzes the uses of space and geography up the scales of political organization – from the village to the municipal – attempting to find the intersections where physical space meets governance using Semarang, Indonesia as my strategic case. This research employs a biocultural lens, addressing the existing gaps in literature by advancing a framework to function across disciplines and ultimately reconnecting to its practical application in urban planning and design. Such a framework is important in providing a blueprint for building a coherent and supportive structure on which to assess the human impact of design and contribute new “human-centered ...


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.


Geoscientists-In-The-Park Summer Internship Mapping Shoreline Change With The National Park Service, Michael P. Endicott 2017 Clark University

Geoscientists-In-The-Park Summer Internship Mapping Shoreline Change With The National Park Service, Michael P. Endicott

International Development, Community and Environment (IDCE)

This project paper details the activities carried out as a Geologist/GIS Specialist in the Gateway National Recreation Area as a part of the Geoscientists-In-The-Park internship program. The focus of this position was on supporting the geomorphological monitoring efforts of the National Park Service. This was accomplished through a combination of field data collection, GIS analysis, report writing, and project work. By the end of the internship, substantial progress was made to the formation of Gateway’s Annual 1D and 2D report for 2015-2016, field data were collected for the 2016 summer season, changes in geomorphology were explored and summarized ...


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