Results 21 to 30 of about 364,146 (257)

A modified discrete element method for concave granular materials based on energy-conserving contact model

open access: yesTheoretical and Applied Mechanics Letters, 2022
The development of a general discrete element method for irregularly shaped particles is the core issue of the simulation of the dynamic behavior of granular materials.
Ting Qiao, Ji Li, Shunying Ji
doaj   +1 more source

Optimal contact definition for reconstruction of Contact Maps

open access: yesBMC Bioinformatics, 2010
Background Contact maps have been extensively used as a simplified representation of protein structures. They capture most important features of a protein's fold, being preferred by a number of researchers for the description and study of protein ...
Stehr Henning   +4 more
doaj   +1 more source

Representation of Planar Hypergraphs by Contacts of Triangles [PDF]

open access: yes, 2008
Many representation theorems extend from planar graphs to planar hypergraphs. The authors proved in a previous paper that every planar graph has a representation by contact of triangles. We prove here that this representation result extend to planar linear hypergraphs.
Hubert de Fraysseix   +2 more
openaire   +1 more source

Edge-Weighted Contact Representations of Planar Graphs [PDF]

open access: yesJournal of Graph Algorithms and Applications, 2013
Summary: We study contact representations of edge-weighted planar graphs, where vertices are represented as interior-disjoint rectangles or rectilinear polygons and edges are represented as contacts of vertex boundaries whose contact lengths represent the edge weights.
Martin Nöllenburg   +2 more
openaire   +4 more sources

Layered Area-Proportional Rectangle Contact Representations [PDF]

open access: yes, 2021
Appears in the Proceedings of the 29th International Symposium on Graph Drawing and Network Visualization (GD 2021)
Martin Nöllenburg   +2 more
openaire   +2 more sources

Axis-Aligned Square Contact Representations

open access: yesCoRR, 2021
We introduce a new class $\mathcal{G}$ of bipartite plane graphs and prove that each graph in $\mathcal{G}$ admits a proper square contact representation. A contact between two squares is \emph{proper} if they intersect in a line segment of positive length.
openaire   +2 more sources

GrapHi-C: graph-based visualization of Hi-C datasets

open access: yesBMC Research Notes, 2018
Objectives Hi-C is a proximity-based ligation reaction used to detect regions of the genome that are close in 3D space (or “interacting”). Typically, results from Hi-C experiments (contact maps) are visualized as heatmaps or Circos plots.
Kimberly MacKay   +2 more
doaj   +1 more source

Distributive contact lattices: Topological representations

open access: yesThe Journal of Logic and Algebraic Programming, 2008
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ivo Düntsch   +3 more
openaire   +2 more sources

Improved Approximation Algorithms for Box Contact Representations [PDF]

open access: yesAlgorithmica, 2014
We study the following geometric representation problem: Given a graph whose vertices correspond to axis-aligned rectangles with fixed dimensions, arrange the rectangles without overlaps in the plane such that two rectangles touch if the graph contains an edge between them.
Michael A. Bekos   +7 more
openaire   +4 more sources

A novel representation of RNA secondary structure based on element-contact graphs

open access: yesBMC Bioinformatics, 2008
Background Depending on their specific structures, noncoding RNAs (ncRNAs) play important roles in many biological processes. Interest in developing new topological indices based on RNA graphs has been revived in recent years, as such indices can be used
Bo Xiaochen   +3 more
doaj   +1 more source

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