Results 41 to 50 of about 2,886,103 (258)

Digital soil mapping: strategy for data pre-processing

open access: yesRevista Brasileira de Ciência do Solo, 2012
The region of greatest variability on soil maps is along the edge of their polygons, causing disagreement among pedologists about the appropriate description of soil classes at these locations.
Alexandre ten Caten   +2 more
doaj   +1 more source

Deep Convolutional Neural Networks for Automated Characterization of Arctic Ice-Wedge Polygons in Very High Spatial Resolution Aerial Imagery

open access: yesRemote Sensing, 2018
The microtopography associated with ice-wedge polygons governs many aspects of Arctic ecosystem, permafrost, and hydrologic dynamics from local to regional scales owing to the linkages between microtopography and the flow and storage of water, vegetation
Weixing Zhang   +3 more
doaj   +1 more source

DETER-R: An Operational Near-Real Time Tropical Forest Disturbance Warning System Based on Sentinel-1 Time Series Analysis

open access: yesRemote Sensing, 2022
Continuous monitoring of forest disturbance on tropical forests is a fundamental tool to support proactive preservation actions and to stop further destruction of native vegetation.
Juan Doblas   +9 more
doaj   +1 more source

Microtopographic control on the ground thermal regime in ice wedge polygons [PDF]

open access: yesThe Cryosphere, 2018
The goal of this research is to constrain the influence of ice wedge polygon microtopography on near-surface ground temperatures. Ice wedge polygon microtopography is prone to rapid deformation in a changing climate, and cracking in the ice wedge ...
C. J. Abolt   +4 more
doaj   +1 more source

Scalable exact visualization of isocontours in road networks via minimum-link paths

open access: yesJournal of Computational Geometry, 2018
Isocontours in road networks represent the area that is reachable from a source within a given resource limit. We study the problem of computing accurate isocontours in realistic, large-scale networks.
Moritz Baum   +4 more
doaj   +1 more source

Multifocal acceptance score to evaluate vision: MAS-2EV

open access: yesScientific Reports, 2021
We present a new metric (Multifocal Acceptance Score, MAS-2EV) to evaluate vision with presbyopic corrections. The MAS-2EV is based on a set of images representing natural visual scenes at day and night conditions projected in far and near displays, and ...
Xoana Barcala   +6 more
doaj   +1 more source

Explicitly modelling microtopography in permafrost landscapes in a land surface model (JULES vn5.4_microtopography) [PDF]

open access: yesGeoscientific Model Development, 2022
Microtopography can be a key driver of heterogeneity in the ground thermal and hydrological regime of permafrost landscapes. In turn, this heterogeneity can influence plant communities, methane fluxes, and the initiation of abrupt thaw processes. Here we
N. D. Smith   +13 more
doaj   +1 more source

A near-quadratic algorithm for planning the motion of a polygon in a polygonal environment [PDF]

open access: yesDiscrete & Computational Geometry, 1996
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Dan Halperin, Micha Sharir
openaire   +1 more source

High potential for loss of permafrost landforms in a changing climate

open access: yesEnvironmental Research Letters, 2020
The presence of ground ice in Arctic soils exerts a major effect on permafrost hydrology and ecology, and factors prominently into geomorphic landform development.
Olli Karjalainen   +7 more
doaj   +1 more source

The Mass-Longevity Triangle: Pareto Optimality and the Geometry of Life-History Trait Space. [PDF]

open access: yesPLoS Computational Biology, 2015
When organisms need to perform multiple tasks they face a fundamental tradeoff: no phenotype can be optimal at all tasks. This situation was recently analyzed using Pareto optimality, showing that tradeoffs between tasks lead to phenotypes distributed on
Pablo Szekely   +4 more
doaj   +1 more source

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