Results 31 to 40 of about 5,191,717 (281)

Stability and steady state of complex cooperative systems: a diakoptic approach [PDF]

open access: yesRoyal Society Open Science, 2019
Cooperative dynamics are common in ecology and population dynamics. However, their commonly high degree of complexity with a large number of coupled degrees of freedom renders them difficult to analyse. Here, we present a graph-theoretical criterion, via
Philip Greulich   +3 more
doaj   +1 more source

Autonomous linear lossless systems

open access: yes, 2008
We define a lossless autonomous system as one having a quadratic differential form associated with it called an energy function, which is positive and which is conserved.
Rao, Shodhan, Rapisarda, Paolo
core   +1 more source

Perturbation theory of observable linear systems [PDF]

open access: yes, 2015
The present work is motivated by the asymptotic control theory for a system of linear oscillators: the problem is to design a common bounded scalar control for damping all oscillators in asymptotically minimal time.
Fedorov, Aleksey, Ovseevich, Alexander
core   +1 more source

Behavior of Correlation Functions in the Dynamics of the Multiparticle Quantum Arnol’d Cat

open access: yesEntropy
The multi-particle Arnol’d cat is a generalization of the Hamiltonian system, both classical and quantum, whose period evolution operator is the renowned map that bears its name.
Giorgio Mantica
doaj   +1 more source

Linear Systems over Join-Blank Algebras [PDF]

open access: yes, 2017
A central problem of linear algebra is solving linear systems. Regarding linear systems as equations over general semirings (V,otimes,oplus,0,1) instead of rings or fields makes traditional approaches impossible.
Jananthan, Hayden   +2 more
core   +2 more sources

State maps for linear systems

open access: yes, 1997
Modeling of physical systems consists of writing the equations describing a phenomenon and yields as a result a set of differential-algebraic equations.
Rapisarda, Paolo, Willems, Jan C.
core   +3 more sources

Modeling of linear fading memory systems [PDF]

open access: yes, 1996
Motivated by questions of approximate modeling and identification, we consider various classes of linear time-varying bounded-input-bounded output (BIBO) stable fading memory systems and the characterizations are proved.
Makila, P.M., Partington, J.R.
core   +1 more source

One New Property of a Class of Linear Time-Optimal Control Problems

open access: yesMathematics, 2023
The following paper deals with a new property of linear time-optimal control problems with real eigenvalues of the system. This property unveils the possibility of synthesizing the time-optimal control without describing the switching hyper-surfaces ...
Borislav Penev
doaj   +1 more source

European Standard Clinical Practice Guideline and EXPeRT Recommendations for the Diagnosis and Management of Gastroenteropancreatic Neuroendocrine Neoplasms in Children and Adolescents

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT Pediatric gastroenteropancreatic neuroendocrine neoplasms (GEP‐NENs) are extremely rare and clinically heterogeneous. Management has largely been extrapolated from adult practice. This European Standard Clinical Practice Guideline (ESCP), developed by the EXPeRT network in collaboration with adult NEN experts, provides (adult) evidence ...
Michaela Kuhlen   +23 more
wiley   +1 more source

Generic perturbations of linear integrable Hamiltonian systems [PDF]

open access: yes, 2015
In this paper, we investigate perturbations of linear integrable Hamiltonian systems, with the aim of establishing results in the spirit of the KAM theorem (preservation of invariant tori), the Nekhoroshev theorem (stability of the action variables for a
A. Bounemoura   +26 more
core   +4 more sources

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