Results 91 to 100 of about 68,932 (207)

3D random Voronoi grain-based models for simulation of brittle rock damage and fabric-guided micro-fracturing

Journal of Rock Mechanics and Geotechnical Engineering, 2014
A grain-based distinct element model featuring three-dimensional (3D) Voronoi tessellations (random poly-crystals) is proposed for simulation of crack damage development in brittle rocks. The grain boundaries in poly-crystal structure produced by Voronoi
E. Ghazvinian, M.S. Diederichs, R. Quey
doaj   +1 more source

Lower Bounds for the Complexity of the Voronoi Diagram of Polygonal Curves under the Discrete Frechet Distance

, 2007
We give lower bounds for the combinatorial complexity of the Voronoi diagram of polygonal curves under the discrete Frechet distance. We show that the Voronoi diagram of n curves in R^d with k vertices each, has complexity Omega(n^{dk}) for dimension d=1,
Buchin, Kevin, Buchin, Maike
core   +1 more source

A Survey of Methods for Constructing 3D Urban Models From Point Clouds

Computer Graphics Forum, EarlyView.
The survey outlines a general process for constructing 3D models from point clouds and categorizes the methods based on their use of templates, basic surface primitives, hybrid approaches, or linear primitives. Additionally, the survey reviews the datasets and benchmarks that are essential for testing and training the developed methods.
Chiara Romanengo, Silvia Biasotti, Bianca Falcidieno, Daniela Cabiddu, Elia Moscoso Thompson, Michela Spagnuolo   +5 more
wiley   +1 more source

2D Voronoi Coverage Control with Gaussian Density Functions by Line Integration

SICE Journal of Control, Measurement, and System Integration, 2017
This paper considers Voronoi coverage control for two-dimensional space with a non-uniform density function. In general, the computation of a mass and a centroid of a Voronoi cell for a non-uniform density function requires spatial discretization since ...
Naoki Hayashi, Kohei Segawa, Shigemasa Takai   +2 more
doaj   +1 more source

A fast metaheuristic approach for the planar multiple obnoxious facility location problem

International Transactions in Operational Research, EarlyView.
Abstract The multiple obnoxious facility location problem is one of the most studied problems in the literature of the obnoxious facility location problems family. In this work, we propose an alternative algorithmic approach for this problem, based on an efficient metaheuristic procedure over a discretization of the plane based on Voronoi diagrams ...
Sergio Salazar, Abraham Duarte, J. Manuel Colmenar   +2 more
wiley   +1 more source

Diagramas de Voronoi para a definição de áreas de abrangência de hospitais públicos no Município do Rio de Janeiro Defining catchment areas for public hospitals in the Municipality of Rio de Janeiro through Weighted Voronoi Diagrams

Cadernos de Saúde Pública, 2000
No planejamento de recursos em saúde é importante o conhecimento da área de abrangência de uma unidade. Os Diagramas de Voronoi constituem uma técnica para tal; são polígonos construídos de tal forma que as bordas de polígonos adjacentes encontram-se ...
Flavio Astolpho Vieira Souto Rezende, Renan M.Varnier Almeida, Flavio F. Nobre   +2 more
doaj   +1 more source

Functional morphology of trabecular bone in the calcaneus of African apes

Journal of Anatomy, EarlyView.
Pan exhibits significantly higher calcaneal tuberosity trabecular thickness (Tb.Th) and bone volume fraction (BV/TV) than Gorilla, potentially reflecting higher triceps surae forces for vertical climbing. Both taxa have significantly higher Tb.Th and BV/TV in the anterior calcaneus; the difference is exaggerated in Gorilla, potentially reflecting ...
Christine M. Harper, Biren A. Patel
wiley   +1 more source

Applications of Voronoi Diagrams in Multi-Robot Coverage: A Review

Journal of Marine Science and Engineering
In recent decades, multi-robot region coverage has played an important role in the fields of environmental sensing, target searching, etc., and it has received widespread attention worldwide.
Meng Zhou, Jianyu Li, Chang Wang, Jing Wang, Li Wang   +4 more
doaj   +1 more source

Computation of Compact Distributions of Discrete Elements

Algorithms, 2019
In our daily lives, many plane patterns can actually be regarded as a compact distribution of a number of elements with certain shapes, like the classic pattern mosaic.
Jie Chen, Gang Yang, Meng Yang
doaj   +1 more source

Circular RNAs in Lotus japonicus Responses to Nutrient Supply and Mesorhizobium Symbiosis

Plant, Cell &Environment, EarlyView.
ABSTRACT Symbiotic interactions between legumes and rhizobia enable nitrogen fixation under low nutrient conditions. The establishment and function of symbiotic interactions require coordinated changes in gene expression in both the host and the microbe. Circular RNAs (circRNAs) are endogenous gene‐specific molecules that can regulate transcription and
Delecia Utley, Asa Budnick, Simona Radutoiu, Heike Sederoff   +3 more
wiley   +1 more source