Results 21 to 30 of about 4,624,942 (322)

Semigroup structure underlying evoluations

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 1982
A member of a class of evolution systems is defined by averaging a one parameter family of invertible transformations G with a semigroup T. The resulting evolution system, U(t,s)=G(t)T(t−s)G(s)−1, preserves continuity and strong continuity, and in case G
G. Edgar Parker
doaj   +1 more source

Second order evolution equations with nonlocal conditions

open access: yesDemonstratio Mathematica, 2017
In this paper, we shall establish sufficient conditions for the existence of solutions for second order semilinear functional evolutions equation with nonlocal conditions in Fréchet spaces.
Benchohra Mouffak   +2 more
doaj   +1 more source

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

The Evolution of Dopamine Systems in Chordates [PDF]

open access: yesFrontiers in Neuroanatomy, 2011
Dopamine (DA) neurotransmission in the central nervous system (CNS) is found throughout chordates, and its emergence predates the divergence of chordates. Many of the molecular components of DA systems, such as biosynthetic enzymes, transporters, and receptors, are shared with those of other monoamine systems, suggesting the common origin of these ...
Yamamoto, Kei, Vernier, Philippe
openaire   +4 more sources

Distributed Team Working - Approaches for DiSSCo [PDF]

open access: yesResearch Ideas and Outcomes, 2023
As a highly decentralised research infrastructure, the Distributed System of Scientific Collections (DiSSCo) will need to develop cross-institutional teams, adopting work practices where individual staff are intensively working collectively on common ...
Helen Hardy   +9 more
doaj   +3 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  

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

Can Developmental AIS Provides Immunity to a Multi-cellular Robotics System? [PDF]

open access: yes, 2010
The major challenge to multi-cellular robotics system is how to ensure the system is homeostatically stable. This position paper pro- poses a developmental artificial immune system (dev-AIS) framework that tries to provide and maintain homeostasis to the
Liu, Yang (Jerry), Mokhtar, Maizura
core   +1 more source

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

Characterization and Genomic Analysis of Marinobacter Phage vB_MalS-PS3, Representing a New Lambda-Like Temperate Siphoviral Genus Infecting Algae-Associated Bacteria

open access: yesFrontiers in Microbiology, 2021
Marinobacter is the abundant and important algal-associated and hydrocarbon biodegradation bacteria in the ocean. However, little knowledge about their phages has been reported. Here, a novel siphovirus, vB_MalS-PS3, infecting Marinobacter algicola DG893(
Yundan Liu   +29 more
doaj   +1 more source

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