Results 1 to 10 of about 4,705,313 (296)

Global existence and stability for second order functional evolution equations with infinite delay

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2016
In this article, the authors give sufficient conditions for existence and attractivity of mild solutions for second order semi-linear functional evolution equation in Banach spaces using Schauder's fixed point theorem.
Abdessalam Baliki   +2 more
doaj   +1 more source

Constraint Damping in First-Order Evolution Systems for Numerical Relativity [PDF]

open access: yes, 2007
A new constraint suppressing formulation of the Einstein evolution equations is presented, generalizing the five-parameter first-order system due to Kidder, Scheel and Teukolsky (KST).
J. W. York, Jr.   +5 more
core   +2 more sources

Controllability results for semilinear functional and neutral functional evolution equations with infinite delay [PDF]

open access: yesSurveys in Mathematics and its Applications, 2009
In this paper sufficient conditions are given ensuring the controllability of mild solutions defined on a bounded interval for two classes of first order semilinear functional and neutral functional differential equations involving evolution operators ...
Selma Baghli   +2 more
doaj  

Evolution of triage systems [PDF]

open access: yesEmergency Medicine Journal, 2006
The French word "trier", the origin of the word "triage", was originally applied to a process of sorting, probably around 1792, by Baron Dominique Jean Larrey, Surgeon in Chief to Napoleon's Imperial Guard. Larrey was credited with designing a flying ambulance: the Ambulance Volante.
openaire   +2 more sources

Boundary Conditions for the Einstein Evolution System [PDF]

open access: yes, 2004
New boundary conditions are constructed and tested numerically for a general first-order form of the Einstein evolution system. These conditions prevent constraint violations from entering the computational domain through timelike boundaries, allow the ...
E. T. Newman   +8 more
core   +2 more sources

Spatiotemporal Dynamics of Coastal Viral Community Structure and Potential Biogeochemical Roles Affected by an Ulva prolifera Green Tide

open access: yesmSystems, 2023
The world’s largest macroalgal green tide, caused by Ulva prolifera, has resulted in serious consequences for coastal waters of the Yellow Sea, China.
Meiaoxue Han   +19 more
doaj   +1 more source

The Einstein-Friedrich-nonlinear scalar field system and the stability of scalar field Cosmologies [PDF]

open access: yes, 2017
A frame representation is used to derive a first order quasi-linear symmetric hyperbolic system for a scalar field minimally coupled to gravity. This procedure is inspired by similar evolution equations introduced by Friedrich to study the Einstein-Euler
Alho, Artur   +2 more
core   +2 more sources

Interspecific variation of antennal lobe composition among four hornet species

open access: yesScientific Reports, 2021
Olfaction is a crucial sensory modality underlying foraging, social and mating behaviors in many insects. Since the olfactory system is at the interface between the animal and its environment, it receives strong evolutionary pressures that promote ...
Antoine Couto   +3 more
doaj   +1 more source

Shaping robust system through evolution [PDF]

open access: yesChaos: An Interdisciplinary Journal of Nonlinear Science, 2008
Biological functions are generated as a result of developmental dynamics that form phenotypes governed by genotypes. The dynamical system for development is shaped through genetic evolution following natural selection based on the fitness of the phenotype.
openaire   +3 more sources

Non-Markovian finite-temperature two-time correlation functions of system operators: beyond the quantum regression theorem

open access: yes, 2011
An extremely useful evolution equation that allows systematically calculating the two-time correlation functions (CF's) of system operators for non-Markovian open (dissipative) quantum systems is derived.
Breuer H. P.   +4 more
core   +1 more source

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