Results 11 to 20 of about 608,403 (284)

Hypercube computing: Connected components [PDF]

open access: yesThe Journal of Supercomputing, 1989
The connected-components problem is used to illustrate the programming issues that arise when a multiple-instruction/multiple-data hypercube multicomputer is used. These issues include selection of algorithmic abstraction, problem partitioning and mapping, overlapping computation and communication, and load balancing.
Jinwoon Woo, Sartaj Sahni
openaire   +1 more source

In-database connected component analysis [PDF]

open access: yes2020 IEEE 36th International Conference on Data Engineering (ICDE), 2020
We describe a Big Data-practical, SQL-implementable algorithm for efficiently determining connected components for graph data stored in a Massively Parallel Processing (MPP) relational database. The algorithm described is a linear-space, randomised algorithm, always terminating with the correct answer but subject to a stochastic running time, such that
Harald Bögeholz   +2 more
openaire   +2 more sources

On Connected Components with Many Edges

open access: yesSIAM Journal on Discrete Mathematics, 2023
12 pages, 2 figures; replaced with version revised according to reviewers' feedback.
openaire   +2 more sources

Measuring the Vulnerability of Alternating Group Graphs and Split-Star Networks in Terms of Component Connectivity

open access: yesIEEE Access, 2019
For an integer ℓ ≥ 2, the ℓ-component connectivity of a graph G, denoted by κℓ(G), is the minimum number of vertices whose removal from G results in a disconnected graph with at least ℓ components or a graph with
Mei-Mei Gu, Rong-Xia Hao, Jou-Ming Chang
doaj   +1 more source

Functional connectivity changes and their relationship with clinical disability and white matter integrity in patients with relapsing-remitting multiple sclerosis [PDF]

open access: yes, 2015
Background and objective: To define the pathological substrate underlying disability in multiple sclerosis by evaluating the relationship of resting-state functional connectivity with microstructural brain damage, as assessed by diffusion tensor maging ...
Filippini, N   +8 more
core   +1 more source

Age-related Changes in Inter-Network Connectivity by Component Analysis

open access: yesFrontiers in Aging Neuroscience, 2015
Healthy aging is associated with brain changes that reflect an alteration to a functional unit in response to the available resources and architecture.
Christian eLa   +9 more
doaj   +1 more source

A low-dimensional cognitive-network space in Alzheimer’s disease and frontotemporal dementia

open access: yesAlzheimer’s Research & Therapy, 2022
Background Alzheimer’s disease (AD) and frontotemporal dementia (FTD) show network dysfunctions linked with cognitive deficits. Within this framework, network abnormalities between AD and FTD show both convergent and divergent patterns.
Lorenzo Pini   +10 more
doaj   +1 more source

Percolation in living neural networks [PDF]

open access: yes, 2006
We study living neural networks by measuring the neurons' response to a global electrical stimulation. Neural connectivity is lowered by reducing the synaptic strength, chemically blocking neurotransmitter receptors.
D. Stauffer   +8 more
core   +2 more sources

Disrupted Functional Connectivity of Basal Ganglia across Tremor-Dominant and Akinetic/Rigid-Dominant Parkinson’s Disease

open access: yesFrontiers in Aging Neuroscience, 2017
It is well known that disruption of basal ganglia function generates the motor symptoms in PD, however, these are presented in a heterogeneous manner; patients can be divided into tremor-dominant and akinesia/rigidity-dominant subtypes.
Xiaojun Guan   +9 more
doaj   +1 more source

Performance evaluation considering iterations per phase and SA temperature in WMN-SA system [PDF]

open access: yes, 2014
One of the key advantages of Wireless Mesh Networks (WMNs) is their importance for providing cost-efficient broadband connectivity. There are issues for achieving the network connectivity and user coverage, which are related with the node placement ...
Barolli, Leonard   +5 more
core   +4 more sources

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