Results 1 to 10 of about 37,752 (264)
Characterizing Wind Gusts in Complex Terrain [PDF]
Atmospheric Chemistry and Physics, 2018 Abstract. Wind gusts are a key driver of aerodynamic loading, especially for tall structures such a bridges and wind turbines. However, gust characteristics in complex terrain are not well understood and common approximations used to describe wind gust behavior may not be appropriate at heights relevant to wind turbines and other structures.
F. Letson +5 more
openaire +4 more sources
On the Expected Complexity of Voronoi Diagrams on Terrains [PDF]
ACM Transactions on Algorithms, 2012 We investigate the combinatorial complexity of geodesic Voronoi diagrams on polyhedral terrains using a probabilistic analysis. Aronov et al. [2008] prove that, if one makes certain realistic input assumptions on the terrain, this complexity is Θ( n + m √ n ) in the ...
Anne Driemel +2 more
openaire +5 more sources
Arches: a Framework for Modeling Complex Terrains [PDF]
Computer Graphics Forum, 2009 AbstractIn this paper, we present a framework for representing complex terrains with such features as overhangs, arches and caves and including different materials such as sand and rocks. Our hybrid model combines a volumetric discrete data structure that stores the different materials and an implicit representation for sculpting and reconstructing the
Peytavie, Adrien +3 more
openaire +3 more sources
Advice complexity of treasure hunt in geometric terrains [PDF]
Information and Computation, 2021 Treasure hunt is the task of finding an inert target by a mobile agent in an unknown environment. We consider treasure hunt in geometric terrains with obstacles. Both the terrain and the obstacles are modeled as polygons and both the agent and the treasure are modeled as points.
Andrzej Pelc, Ram Narayan Yadav
openaire +3 more sources
Complex terrain experiments in the New European Wind Atlas. [PDF]
Philos Trans A Math Phys Eng Sci, 2017 Mann J +20 more
europepmc +2 more sources
The Complexity of Guarding Terrains
CoRR, 2009 A set $G$ of points on a 1.5-dimensional terrain, also known as an $x$-monotone polygonal chain, is said to guard the terrain if any point on the terrain is 'seen' by a point in $G$. Two points on the terrain see each other if and only if the line segment between them is never strictly below the terrain.
James King 0001, Erik Krohn
openaire +2 more sources
Surface Wind Regionalization in Complex Terrain [PDF]
Journal of Applied Meteorology and Climatology, 2008 AbstractDaily wind variability in the Comunidad Foral de Navarra in northern Spain was studied using wind observations at 35 locations to derive subregions with homogeneous temporal variability. Two different methodologies based on principal component analysis were used to regionalize: 1) cluster analysis and 2) the rotation of the selected principal ...
Jiménez, P. A. +5 more
openaire +2 more sources
Recirculation over complex terrain [PDF]
Journal of Geophysical Research: Atmospheres, 2017 AbstractThis study generated eddy covariance data to investigate atmospheric dynamics leeward of a small, forested hillside in upstate New York. The causes and effects of recirculation eddies were examined to support the larger goal of improving measurement of the exchange of energy, moisture, and trace gases between the terrestrial biosphere and the ...
Eric Kutter +5 more
openaire +1 more source
Spatial Aggregation of Complex Terrain [PDF]
Geographical Analysis, 1989 Distributed component simulations of watersheds seek to represent the terrain as a contiguous set of functional units such as hillslopes or subcatchments with distinctive hydrologic responses. The partition should capture the significant geographic patterns of watershed response by maximizing the proportion of the topographic and surface cover variance
openaire +1 more source