Results 41 to 50 of about 5,659 (189)
Construction of harmonic diffeomorphisms and minimal graphs [PDF]
, 2007 We study complete minimal graphs in HxR, which take asymptotic boundary values plus and minus infinity on alternating sides of an ideal inscribed polygon Γ in H.
Collin, Pascal, Rosenberg, Harold
core +3 more sources
Planar lower envelope of monotone polygonal chains [PDF]
Information Processing Letters, 2015 A simple linear search algorithm running in $O(n+mk)$ time is proposed for constructing the lower envelope of $k$ vertices from $m$ monotone polygonal chains in 2D with $n$ vertices in total. This can be applied to output-sensitive construction of lower envelopes for arbitrary line segments in optimal $O(n\log k)$ time, where $k$ is the output size ...
openaire +3 more sources
Archaeological Prospection, EarlyView.ABSTRACT High‐resolution and accurate synoptic images of terrestrial topography, even in densely forested areas, have proven valuable for archaeology by enabling the identification and characterization of relief patterns associated with ancient human activities. This study presents a novel approach that integrates digital terrain models (DTMs) obtained
Jhon A. Zabaleta‐Santisteban +13 more
wiley +1 more source
International Journal for Numerical Methods in Fluids, EarlyView.We introduce an efficient open‐source numerical framework for the automated search for the placements of injection and production wells in hot fracture‐controlled reservoirs that sustainably optimize geothermal energy production. We model the reservoirs as discrete fracture networks in 3D. The fluid flow and heat transport in the reservoirs are modeled
Ondřej Pártl, Ernesto Meneses Rioseco
wiley +1 more source
A simple algorithm for computing positively weighted straight skeletons of monotone polygons.
Inf Process Lett, 2015 We study the characteristics of straight skeletons of monotone polygonal chains and use them to devise an algorithm for computing positively weighted straight skeletons of monotone polygons. Our algorithm runs in [Formula: see text] time and [Formula: see text] space, where n denotes the number of vertices of the polygon.
Biedl T +4 more
europepmc +4 more sources
Testing a simple polygon for monotonicity optimally in parallel
[1993] Proceedings Seventh International Parallel Processing Symposium, 1993 We show that an \(n\)-vertex simple polygon can be tested in parallel for monotonicity optimally in \(O(\log n)\) time using \(n/\log n\) EREW PRAM processors, and we present two different optimal parallel algorithms for solving this problem. Our results leads to an optimal parallel algorithm for triangulating simple polygons that runs in \(O(\log n)\)
Chen, Danny Z., Guha, Sumanta
openaire +4 more sources
Grassland Research, EarlyView.Tiny “ecosystem engineers,” plateau pikas range across 1600 m², about two basketball courts, mixing soil and nutrients that sustain Tibet's fragile grasslands. Custom‐made trackers and drone imagery show dawn‐to‐dusk surface foraging and nested‐scale patch choices, offering fresh guidance for wildlife‐friendly grazing management.
Dan Li, Johannes M. H. Knops, Li Li
wiley +1 more source
Sunshine Duration in Brazil From Meteosat (1983–2020): Climatology, Variability and Long‐Term Trends
International Journal of Climatology, EarlyView.Using nearly four decades of Meteosat satellite data (1983–2020), this study presents a country‐wide climatology of sunshine duration (SDU) in Brazil. The results reveal marked regional contrasts, dominant modes of variability, and significant long‐term trends, providing new information on the most relevant meteorological systems that influence SDU and
Maria Lívia Lins Mattos Gava +2 more
wiley +1 more source
On Polygons Excluding Point Sets [PDF]
, 2009 By a polygonization of a finite point set $S$ in the plane we understand a simple polygon having $S$ as the set of its vertices. Let $B$ and $R$ be sets of blue and red points, respectively, in the plane such that $B\cup R$ is in general position, and ...
Fulek, Radoslav +3 more
core +2 more sources
Solar Geoengineering Effects on Malaria Transmission Risk in South Asia Under G6sulfur Scenario
International Journal of Climatology, EarlyView.Comparison of EIR (unit: No of infected bites per person per day) for each considered country in South Asia, under the considered scenarios, averaged over the period 2020–2090. A regression equation is shown for each country (for Bhutan EIRG = 0.1690 × 10−10 EIRS + 0.5968 × 10−12) to illustrate the projected trend.
Athar Hussain +2 more
wiley +1 more source