Results 11 to 20 of about 880,221 (312)
Evolution equations in Fréchet spaces
Journal of Mathematical Sciences and Modelling, 2018 This paper deals with the existence of mild solutions for a class of evolution equations. The technique used is a generalization of the classical Darbo fixed point theorem for Fr\'{e}chet spaces associated with the concept of measure of noncompactness.
Mouffak Benchohra +3 more
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Psychrobacter Phage Encoding an Antibiotics Resistance Gene Represents a Novel Caudoviral Family
Microbiology Spectrum, 2023 Psychrobacter is an important bacterial genus that is widespread in Antarctic and marine environments. However, to date, only two complete Psychrobacter phage sequences have been deposited in the NCBI database.
Hongmin Wang +14 more
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Frontiers in Microbiology, 2023 Cyanophages play a crucial role in the biogeochemical cycles of aquatic ecosystems by affecting the population dynamics and community structure of cyanobacteria. In this study, a novel cyanophage, Nanhaivirus ms29, that infects Synechococcus sp. MW02 was
Tiancong Wang +11 more
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Settlement Systems in the Evolution [PDF]
Geografiska Annaler, Series B: Human Geography, 2000 L'article reprend les principes enonces pour une theorie evolutive des villes dans un article de l'Espace Geographique.
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Distributed Team Working - Approaches for DiSSCo [PDF]
Research 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
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Evolution in complex systems [PDF]
Complexity, 2004 AbstractWhat features characterize complex system dynamics? Power laws and scale invariance of fluctuations are often taken as the hallmarks of complexity, drawing on analogies with equilibrium critical phenomena. Here we argue that slow, directed dynamics, during which the system's properties change significantly, is fundamental.
Paul E. Anderson +4 more
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Global existence and stability for second order functional evolution equations with infinite delay
Electronic 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
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Evolution of the melanocortin system
General and Comparative Endocrinology, 2014 The melanocortin system is one of the most complex of the hormonal systems. It involves different agonists encoded in the multiplex precursor proopiomelanocortin (POMC) or in different genes as β-defensins, endogenous antagonist, like agouti-signalling protein (ASIP) or agouti-related protein (AGRP), and five different melanocortin receptors (MCRs ...
Cortés, Raúl +6 more
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Demonstratio Mathematica, 2019 The objective of this article is to discuss the existence and uniqueness of mild solutions for a class of non-autonomous semilinear differential equations with nonlocal condition via monotone iterative method with upper and lower solutions in an ordered ...
Meraj Arshi, Pandey Dwijendra Narain
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Variability and Evolution in Systems of Systems [PDF]
Electronic Proceedings in Theoretical Computer Science, 2013 In this position paper (1) we discuss two particular aspects of Systems of Systems, i.e., variability and evolution. (2) We argue that concepts from Product Line Engineering and Software Evolution are relevant to Systems of Systems Engineering. (3) Conversely, concepts from Systems of Systems Engineering can be helpful in Product Line Engineering and ...
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