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The Critical Group of a Line Graph [PDF]

open access: yesAnnals of Combinatorics, 2012
The critical group of a graph is a finite abelian group whose order is the number of spanning forests of the graph. This paper provides three basic structural results on the critical group of a line graph. The first deals with connected graphs containing no cut-edge. Here the number of independent cycles in the graph, which is known to bound the number
Berget, Andrew   +4 more
openaire   +2 more sources

Multi-Criteria-Based Key Transmission Section Identification and Prevention–Emergency Coordinated Optimal Control Strategy

open access: yesEnergies
Large-scale blackouts in power systems are often triggered by weak links susceptible to cascading failures. As the concentrated reflection of the system’s weak links, identifying key transmission sections and further implementing safety control measures ...
Xinyu Peng   +8 more
doaj   +1 more source

Bronchoscopic Lung Volume Reduction

open access: yesPulmonary Medicine, 2011
The application of lung volume reduction surgery in clinical practice is limited by high postoperative morbidity and stringent selection criteria. This has been the impetus for the development of bronchoscopic approaches to lung volume reduction.
Armin Ernst, Devanand Anantham
doaj   +1 more source

Critical line of the deconfinement phase transitions [PDF]

open access: yesPhysical Review C, 2005
13 pages, 6 ...
Gorenstein, Mark I.   +2 more
openaire   +3 more sources

TESTING OF JEROVEC SAND AND DEFINING ITS CRITICAL STATE LINE [PDF]

open access: yese-GFOS, 2017
The behavior of sand largely depends on the initial state, water content, drainage conditions, and type of action on the sand. The dominant mechanism that governs sand behavior is dilatancy, the volume change during shearing.
Jure Ofak   +2 more
doaj   +1 more source

Dynamic Critical Phenomena in Trapped Bose Gases

open access: yes, 2001
Nonlinear dynamics of a trapped Bose-Einstein condensate, subject to the action of a resonant external field, is studied. This field produces a spatio-temporal modulation of the trapping potential with the frequency close to the transition frequency ...
Bagnato, V. S.   +2 more
core   +2 more sources

Takotsubo's Cardiomyopathy in a Young Female with Severe Traumatic Brain Injury: A Case Report

open access: yesJournal of Neuroanaesthesiology and Critical Care
Takotsubo's cardiomyopathy (TC) typically presents with acute cardiac dysfunction due to regional wall motion abnormality, but unlike other cardiac pathologies, it recovers within a short period.
Gayatri Kumari   +3 more
doaj   +1 more source

Occult catheter rupture causing episodic symptoms in a patient treated with epoprostenol

open access: yesPulmonary Circulation, 2017
Infection, thrombosis, and catheter dislodgment are well-recognized potential complications of chronic intravenous prostanoid therapy for pulmonary arterial hypertension.
Barbara L. LeVarge   +2 more
doaj   +1 more source

Dislocations and the critical endpoint of the melting line of vortex line lattices

open access: yes, 1999
We develop a theory for dislocation-mediated structural transitions in the vortex lattice which allows for a unified description of phase transitions between the three phases, the elastic vortex glass, the amorphous vortex glass, and the vortex liquid ...
A.E. Koshelev   +31 more
core   +1 more source

On the Kertész line: thermodynamic versus geometric criticality [PDF]

open access: yesJournal of Physics A: Mathematical and Theoretical, 2008
The critical behaviour of the Ising model in the absence of an external magnetic field can be specified either through spontaneous symmetry breaking (thermal criticality) or through cluster percolation (geometric criticality). We extend this to finite external fields for the case of the Potts' model, showing that a geometric analysis leads to the same ...
Blanchard, Philippe   +4 more
openaire   +3 more sources

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