Results 131 to 140 of about 19,818 (257)

Towards Automatic Extraction and Updating of VGI-Based Road Networks Using Deep Learning

open access: yesRemote Sensing, 2019
This work presents an approach to road network extraction in remote sensing images. In our earlier work, we worked on the extraction of the road network using a multi-agent approach guided by Volunteered Geographic Information (VGI).
Prajowal Manandhar   +3 more
semanticscholar   +1 more source

Newtonian versus relativistic cosmology

open access: yes, 2012
We show how the relativistic matter and velocity power spectra behave in different gauges. We construct a new gauge where both spectra coincide with Newtonian theory on all scales.
Flender, Samuel F., Schwarz, Dominik J.
core   +1 more source

Extracting Typhoon Disaster Information from VGI Based on Machine Learning

open access: yesJournal of Marine Science and Engineering, 2019
The southeastern coast of China suffers many typhoon disasters every year, causing huge casualties and economic losses. In addition, collecting statistics on typhoon disaster situations is hard work for the government.
J. Yu, Qiansheng Zhao, C. Chin
semanticscholar   +1 more source

A Guidance Tool for VGI Contributors [PDF]

open access: yes, 2015
Many people are familiar with the VGI project OpenStreetMap (OSM), but there are many other projects that are not as well known to volunteers. What is needed is a tool that can help volunteers match their motivations, interests and background to ...
Antoniou, Vyron   +4 more
core  

VGI in Education: From K-12 to Graduate Studies [PDF]

open access: yes, 2012
Volunteered geographic information (VGI) is making its way into an increasing number of fields within geographic information science. This development has raised a need to cover VGI at various educational levels, which has led to a number of new classes on VGI ranging from elementary through secondary school to undergraduate and graduate university ...
Bartoschek, Thomas, Keßler, Carsten
openaire   +3 more sources

Numerical classification of soils and its application in survey [PDF]

open access: yes, 1977
Numerical classification of soils was studied with emphasis on methodology and feasibility in survey. A procedure was designed for construction of classes sufficiently homogeneous in terms of relevant properties and handlable by the surveyor.
Gruijter, J.J., de
core  

Exploiting the Potential of VGI Metadata to Develop A Data-Driven Framework for Predicting User’s Proficiency in OpenStreetMap Context

open access: yesISPRS International Journal of Geo-Information, 2019
Volunteered geographic information (VGI) encourages citizens to contribute geographic data voluntarily that helps to enhance geospatial databases. VGI’s significant limitations are trustworthiness and reliability concerning data quality due to the ...
Gangothri Rajaram, KR Manjula
doaj   +1 more source

Extraction of Pluvial Flood Relevant Volunteered Geographic Information (VGI) by Deep Learning from User Generated Texts and Photos

open access: yesISPRS Int. J. Geo Inf., 2018
In recent years, pluvial floods caused by extreme rainfall events have occurred frequently. Especially in urban areas, they lead to serious damages and endanger the citizens’ safety. Therefore, real-time information about such events is desirable.
Yu Feng, Monika Sester
semanticscholar   +1 more source

Cryptococcus gattii VGI Subtypes: Geographical Distribution, Molecular Traits, and Virulence Difference [PDF]

open access: green, 2021
Xinying Xue   +28 more
openalex   +1 more source

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