Results 21 to 30 of about 2,825 (206)

Hierarchies and triangulations in planar straight-line graphs in the context of two-level precision arithmetic [PDF]

open access: green, 1990
L'organisation structurée (graphe avec hiérarchies et propriétés sémantiques) d'objets du plan implique plusieurs opérations complexes qui doivent être effectuées en toute sécurité de cohérence topologique. La précision inhérente d'une machine étant nécessairement limitée, il faut souvent recourir à une arithmétique exacte couteuse.
Jean Michel Moreau
openalex   +2 more sources

O( n log log n )-work parallel algorithms for straight-line grid embeddings of planar graphs [PDF]

open access: bronzeProceedings of the fourth annual ACM symposium on Parallel algorithms and architectures, 1992
Martin Fürer   +3 more
openalex   +3 more sources

Properties of Poincaré half-maps for planar linear systems and some direct applications to periodic orbits of piecewise systems

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2023
This paper deals with fundamental properties of Poincaré half-maps defined on a straight line for planar linear systems. Concretely, we focus on the analyticity of the Poincaré half-maps, their series expansions (Taylor and Newton–Puiseux) at the ...
Victoriano Carmona   +3 more
doaj   +1 more source

Volume staging for arteriovenous malformation SRS treatment using VMAT

open access: yesJournal of Applied Clinical Medical Physics, Volume 23, Issue 12, December 2022., 2022
Abstract Volume staging involves dividing the target volume into smaller parts and treating each part separately. In this study, the feasibility of volume‐staged stereotactic radiosurgery (VS‐SRS) on a linear accelerator using volumetric modulated arc therapy (VMAT) and a frameless patient positioning system is investigated.
Claudia Mendez, Ermias Gete
wiley   +1 more source

Digital Light Processing of 2D Lattice Composites for Tunable Self‐Sensing and Mechanical Performance

open access: yesAdvanced Engineering Materials, EarlyView., 2023
The study presents the mechanical and in situ sensing performance of digital light processing‐enabled 2D lattice nanocomposites under monotonic tensile and repeated cyclic loading, and provides guidelines for the design of architectures suitable for strain sensors and smart lightweight structures.
Omar Waqas Saadi   +3 more
wiley   +1 more source

AN AUTOMATED METHOD FOR 3D ROOF OUTLINE GENERATION AND REGULARIZATION IN AIRBONE LASER SCANNER DATA [PDF]

open access: yesISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2012
In this paper, an automatic approach for the generation and regularization of 3D roof boundaries in Airborne Laser scanner data is presented. The workflow is commenced by segmentation of the point clouds.
S. N. Perera, H. A. Nalani, H.-G. Maas
doaj   +1 more source

Lower Bounds on the Area Requirements of Series-Parallel Graphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2010
Graphs and ...
Fabrizio Frati
doaj   +1 more source

From Tutte to Floater and Gotsman: On the Resolution of Planar Straight-line Drawings and Morphs [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science
The algorithm of Tutte for constructing convex planar straight-line drawings and the algorithm of Floater and Gotsman for constructing planar straight-line morphs are among the most popular graph drawing algorithms.
Giuseppe Di Battista, Fabrizio Frati
doaj   +1 more source

On some properties of doughnut graphs

open access: yesAKCE International Journal of Graphs and Combinatorics, 2016
The class of doughnut graphs is a subclass of 5-connected planar graphs. It is known that a doughnut graph admits a straight-line grid drawing with linear area, the outerplanarity of a doughnut graph is 3, and a doughnut graph is k-partitionable. In this
Md. Rezaul Karim   +2 more
doaj   +1 more source

Geological surface reconstruction from 3D point clouds

open access: yesMethodsX, 2021
The numerical simulation of phenomena such as subsurface fluid flow or rock deformations are based on geological models, where volumes are typically defined through stratigraphic surfaces and faults, which constitute the geometric constraints, and then ...
Cristina Serazio   +3 more
doaj  

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