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Articles 151 - 163 of 163
Full-Text Articles in Social and Behavioral Sciences
Death To Kappa: Birth Of Quantity Disagreement And Allocation Disagreement For Accuracy Assessment, Robert Gilmore Pontius, Marco Millones
Death To Kappa: Birth Of Quantity Disagreement And Allocation Disagreement For Accuracy Assessment, Robert Gilmore Pontius, Marco Millones
Geography
The family of Kappa indices of agreement claim to compare a map's observed classification accuracy relative to the expected accuracy of baseline maps that can have two types of randomness: (1) random distribution of the quantity of each category and (2) random spatial allocation of the categories. Use of the Kappa indices has become part of the culture in remote sensing and other fields. This article exam- ines five different Kappa indices, some of which were derived by the first author in 2000. We expose the indices' properties mathematically and illustrate their limitations graphically, with emphasis on Kappa's use of …
Ohio's Use Of Geographic Information Systems To Demonstrate Public Participation In The Redistricting Process, Mark Salling
Ohio's Use Of Geographic Information Systems To Demonstrate Public Participation In The Redistricting Process, Mark Salling
All Maxine Goodman Levin School of Urban Affairs Publications
No abstract provided.
Public Participation Geographic Information Systems For Redistricting A Case Study In Ohio, Mark Salling
Public Participation Geographic Information Systems For Redistricting A Case Study In Ohio, Mark Salling
All Maxine Goodman Levin School of Urban Affairs Publications
Public Participation Geographic Information Systems for Redistricting A Case Study in Ohio, Journal of the Urban and Regional Information Systems Association, Vol. 23, Number 1, forthcoming.
Our Theories, Ourselves: Hierarchies Of Place And Status In U.S. Academia, Karen M. Morin, Tamar Rothenberg
Our Theories, Ourselves: Hierarchies Of Place And Status In U.S. Academia, Karen M. Morin, Tamar Rothenberg
Faculty Journal Articles
No abstract provided.
Gis Maps And The Amazon Borderlands, David S. Salisbury
Gis Maps And The Amazon Borderlands, David S. Salisbury
Geography and the Environment Faculty Publications
With training, GIS can be used by all sectors of Latin American society and is the mapping tool of choice for institutions ranging from the Inter-American Development Bank to remote communities in the Amazon rain forest. Geographic information systems are thus a tool of the powerful and the marginalized and the official and the unofficial. [...] In this chapter, we see how GIS maps can improve our ability to analyze conflict over resources and allow additional participation in the process of mapping, but we also confront some of the many political and technical challenges that must be overcome to construct …
Mapping Time, Edward L. Ayers
Mapping Time, Edward L. Ayers
History Faculty Publications
Our tools for dealing with terrestrial space are well-developed and becoming more refined and ubiquitous every day. GIS has long established its dominion, Google permits us to range over the world and down to our very rooftops, and cars and cell phones locate us in space at every moment. It is hardly surprising that geography and mapping suddenly seem important in new ways. Historians have always loved maps and have long felt a kinship with geographers. The very first atlases, compiled six hundred years ago, were historical atlases. But space and time remain uncomfortable—if ever-present and ever-active—companions in the human …
The Geography Of Greenhouse Gas Emissions From Within Urban Areas Of India, Jochen Albrecht, Peter Marcotullio, Andrea Sarzynski
The Geography Of Greenhouse Gas Emissions From Within Urban Areas Of India, Jochen Albrecht, Peter Marcotullio, Andrea Sarzynski
Publications and Research
This paper examines the patterns of greenhouse gas (GHG) emissions from urban areas in India—a rapidly growing and urbanizing nation. It uses a new dataset, Emission Dataset for Global Atmospheric Research (EDGAR) to estimate the urban share of national GHG emissions. It presents a geographic picture of emission variation by urban form (urban population size, area size, density, and growth rate), and economic (GDP and GDP per capita), geographic (location of emissions released: 20, 40, and 80 km from urban areas), and biophysical (ecosystem and climate: cooling degree days) characteristics. Dependent variables include emissions of carbon dioxide (CO2), methane (CH4), …
Public Participation Gis Implementation And The Transformation Of Us Planning Practice, Laxmi Ramasubramanian
Public Participation Gis Implementation And The Transformation Of Us Planning Practice, Laxmi Ramasubramanian
Publications and Research
No abstract provided.
A Picture Is Worth 972 Words: The Old, Red Barn, Chris Laingen
A Picture Is Worth 972 Words: The Old, Red Barn, Chris Laingen
Faculty Research and Creative Activity
No abstract provided.
Adding Another Notch To America's Corn Belt, Chris Laingen
Adding Another Notch To America's Corn Belt, Chris Laingen
Faculty Research and Creative Activity
No abstract provided.
Detection Of The Timing And Duration Of Snowmelt In The Hindu Kush-Himalaya Using Quikscat, 2000-2008, Prajjwal K. Panday, Karen E. Frey, Bardan Ghimire
Detection Of The Timing And Duration Of Snowmelt In The Hindu Kush-Himalaya Using Quikscat, 2000-2008, Prajjwal K. Panday, Karen E. Frey, Bardan Ghimire
Geography
The Hindu Kush-Himalayan (HKH) region holds the largest mass of ice in Central Asia and is highly vulnerable to global climate change, experiencing significant warming (0.21 ± 0.08 °C/decade) over the past few decades. Accurate monitoring of the timing and duration of snowmelt across the HKH region is important, as this region is expected to experience further warming in response to increased greenhouse gas forcing. Despite the many advantages and applications of satellite-derived radar scatterometer data shown for capturing ice and snow melt dynamics at high latitudes, similar comprehensive freeze/thaw detection studies at lower latitudes (including the HKH region) are …
Utilizing Temporally Invariant Calibration Sites To Classify Multiple Dates And Types Of Satellite Imagery, Joe Fortier, John Rogan, Curtis E. Woodcock, Daniel Miller Runfola
Utilizing Temporally Invariant Calibration Sites To Classify Multiple Dates And Types Of Satellite Imagery, Joe Fortier, John Rogan, Curtis E. Woodcock, Daniel Miller Runfola
Geography
Mapping past time periods (retrospective mapping) using remotely sensed data is hindered by a lack of coincident calibration and validation information. The identification of features of same ground cover invariant across time and their use as calibration and validation data addresses this challenge by: (a) streamlining the process of image calibration for multiple dates, and (b) allowing each image to generate its own spectral signature. This study investigates the use of temporally invariant calibration and validation data to map land-cover in Massachusetts, employing five satellite images collected from five separate dates and different sensors. The results indicate that this technique …
Does Terrestrial Drought Explain Global Co 2 Flux Anomalies Induced By El Niño?, C. R. Schwalm, Christopher A. Williams, K. Schaefer, I. Baker, G. J. Collatz, C. Rödenbeck
Does Terrestrial Drought Explain Global Co 2 Flux Anomalies Induced By El Niño?, C. R. Schwalm, Christopher A. Williams, K. Schaefer, I. Baker, G. J. Collatz, C. Rödenbeck
Geography
The El Niño Southern Oscillation is the dominant year-to-year mode of global climate variability. El Niño effects on terrestrial carbon cycling are mediated by associated climate anomalies, primarily drought, influencing fire emissions and biotic net ecosystem exchange (NEE). Here we evaluate whether El Niño produces a consistent response from the global carbon cycle. We apply a novel bottom-up approach to estimating global NEE anomalies based on FLUXNET data using land cover maps and weather reanalysis. We analyze 13 years (1997-2009) of globally gridded observational NEE anomalies derived from eddy covariance flux data, remotely-sensed fire emissions at the monthly time step, …