Results 31 to 40 of about 484,377 (242)

The sinoatrial node, a heterogeneous pacemaker structure [PDF]

open access: yesCardiovascular Research, 2000
This article focuses on the regional heterogeneity of the mammalian sinoatrial (SA) node in terms of cell morphology, pacemaker activity, action potential configuration and conduction, densities of ionic currents (i(Na), i(Ca,L), i(to), i(K,r), i(K,s) and i(f)), expression of gap junction proteins (Cx40, Cx43 and Cx45), autonomic regulation, and ageing.
M R, Boyett, H, Honjo, I, Kodama
openaire   +2 more sources

Toward Understanding and Evaluating Structural Node Embeddings

open access: yesACM Transactions on Knowledge Discovery from Data, 2021
While most network embedding techniques model the proximity between nodes in a network, recently there has been significant interest in structural embeddings that are based on node equivalences , a notion rooted in sociology: equivalences or positions are collections of nodes that have ...
Junchen Jin   +3 more
openaire   +2 more sources

struc2vec: Learning Node Representations from Structural Identity

open access: yes, 2017
Structural identity is a concept of symmetry in which network nodes are identified according to the network structure and their relationship to other nodes.
Mikolov Tomas   +3 more
core   +1 more source

Data structure for node connectivity queries.

open access: yesCoRR, 2021
Let κ(s,t) denote the maximum number of internally disjoint st-paths in an undirected graph G. We consider designing a data structure that includes a list of cuts, and answers the following query: given s,t ∈ V, determine whether κ(s,t) ≤ k, and if so, return a pointer to an st-cut of size ≤ k (or to a minimum st-cut) in the list.
openaire   +4 more sources

Addition-Deletion Networks

open access: yes, 2007
We study structural properties of growing networks where both addition and deletion of nodes are possible. Our model network evolves via two independent processes.
Abramowitz M   +16 more
core   +1 more source

Deep Mutual Encode Model for Network Embedding From Structural Identity

open access: yesIEEE Access, 2019
Network Embedding (NE) is one of the most popular learning methods in complex networks. It aims at learning the low-dimensional representations of nodes in networks and has been applied in a variety of network analytic tasks.
Hongyao Ke   +6 more
doaj   +1 more source

The overlapping community structure of structural brain network in young healthy individuals.

open access: yesPLoS ONE, 2011
Community structure is a universal and significant feature of many complex networks in biology, society, and economics. Community structure has also been revealed in human brain structural and functional networks in previous studies. However, communities
Kai Wu   +10 more
doaj   +1 more source

Node Similarity Measure in Directed Weighted Complex Network Based on Node Nearest Neighbor Local Network Relative Weighted Entropy

open access: yesIEEE Access, 2020
Node similarity is a significant basis for analyzing features in complex network. For complex network with directed weighted edge, the complexity of the relationship among nodes and the diversity of relationship weights make measure node similarity ...
Wanchang Jiang, Yinghui Wang
doaj   +1 more source

On Exploring Node-Feature and Graph-Structure Diversities for Node Drop Graph Pooling

open access: yesNeural Networks, 2023
14 pages, 14 ...
Chuang Liu 0008   +6 more
openaire   +3 more sources

STEPS - an approach for human mobility modeling [PDF]

open access: yes, 2011
In this paper we introduce Spatio-TEmporal Parametric Stepping (STEPS) - a simple parametric mobility model which can cover a large spectrum of human mobility patterns.
A. Chaintreau   +9 more
core   +2 more sources

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