Results 41 to 50 of about 272,972 (308)

Regularity of bicyclic graphs and their powers [PDF]

open access: yesJournal of Algebra and Its Applications, 2019
Let [Formula: see text] be the edge ideal of a bicyclic graph [Formula: see text] with a dumbbell as the base graph. In this paper, we characterize the Castelnuovo–Mumford regularity of [Formula: see text] in terms of the induced matching number of [Formula: see text]. For the base case of this family of graphs, i.e.
Cid-Ruiz, Yairon   +3 more
openaire   +4 more sources

A survey of two-dimensional graph layout techniques for information visualisation [PDF]

open access: yes, 2012
Many algorithms for graph layout have been devised over the last 30 years spanning both the graph drawing and information visualisation communities. This article first reviews the advances made in the field of graph drawing that have then often been ...
Vickers, Paul, Gibson, Helen, Faith, Joe
core   +1 more source

Perfect codes in power graphs of finite groups

open access: yesOpen Mathematics, 2017
The power graph of a finite group is the graph whose vertex set is the group, two distinct elements being adjacent if one is a power of the other. The enhanced power graph of a finite group is the graph whose vertex set consists of all elements of the ...
Ma Xuanlong   +4 more
doaj   +1 more source

Research Review of the Knowledge Graph and its Application in Power System Dispatching and Operation

open access: yesFrontiers in Energy Research, 2022
With the construction of a new power system and the proposal of a double carbon goal, power system operation data are growing explosively, and the optimization of power system dispatching operation is becoming more and more complex.
Junbin Chen   +5 more
doaj   +1 more source

Powerful alliances in graphs

open access: yesDiscrete Mathematics, 2009
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Brigham, Robert C.   +3 more
openaire   +2 more sources

Power flow forecasts at transmission grid nodes using Graph Neural Networks

open access: yes, 2023
The increasing share of renewable energy in the electricity grid and progressing changes in power consumption have led to fluctuating, and weather-dependent power flows.
Josephine M. Thomas   +7 more
core   +1 more source

Power Domination in Graphs [PDF]

open access: yes, 2020
In this chapter, we are interested in power domination in graphs. Power domination is a variation of domination introduced to address a physical problem of monitoring a network with phasor measurement units. The originality of this variation is that some propagation happens, and the set of covered vertices results from an iterative process.
openaire   +3 more sources

A comparison of classical scheduling approaches in power-constrained block-test scheduling [PDF]

open access: yes, 2000
Classical scheduling approaches are applied here to overcome the problem of unequal-length block-test scheduling under power dissipation constraints. List scheduling-like approaches are proposed first as greedy algorithms to tackle the fore mentioned ...
Wang, Xiaojun   +6 more
core   +1 more source

On the Powers of Signed Graphs

open access: yes, 2020
A signed graph is an ordered pair $Σ=(G,σ),$ where $G=(V,E)$ is the underlying graph of $Σ$ with a signature function $σ:E\rightarrow \{1,-1\}$. In this article, we define $n^{th}$ power of a signed graph and discuss some properties of these powers of signed graphs.
T V, Shijin, K A, Germina, K, Shahul
openaire   +2 more sources

Towards sparse matrix operations: graph database approach for power grid computation

open access: yesGlobal Energy Interconnection, 2023
The construction of new power systems presents higher requirements for the Power Internet of Things (PIoT) technology. The “source-grid-load-storage” architecture of a new power system requires PIoT to have a stronger multi- source heterogeneous data ...
Daoxing Li   +4 more
doaj   +1 more source

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