We report on the theoretical investigation of topological properties a periodically quenched one-dimensional dimerized lattice where piece-wise constant Hamiltonian switches from $h_1$ to $h_2$ at partition time $t_p$ within each driving period $T$. examine different dimerization patterns for and interplay with parameters that lead emergence states both zero energy edge Brillouin-Floquet quasi-...

The spatial properties of small star-clusters suggest that they may originate from a fragmentation cascade the cloud for which there might be traces up to few dozen kAU. Our goal is investigate multi-scale structure gas clumps, probe existence hierarchical and evaluate its possible link with star production in terms multiplicity. From Herschel emission maps NGC 2264, clumps are extracted using ...

Utilizing the Atacama Large Millimeter/submillimeter Array (ALMA), we present CS line maps in five rotational lines ($J_{\rm u}=7, 5, 4, 3, 2$) toward circumnuclear disk (CND) and streamers of Galactic Center. Our primary goal is to resolve compact structures within CND streamers, order understand stability conditions molecular cores vicinity supermassive black hole (SMBH) Sgr A*. data provide ...

In this work, the empirical-Gramian-based model reduction methods: Empirical poor man’s truncated balanced realization, empirical approximate balancing, dominant subspaces, truncation, and gains are compared in a non-parametric two parametric variants, via ten error measures: Approximate Lebesgue \(L_0\), \(L_1\), \(L_2\), \(L_\infty \), Hardy \(H_2\), \(H_\infty Hankel, Hilbert-Schmidt-Hankel,...

This paper considers the mixed H2/H∞ control of networked control systems where random time delays existing in sensor-to-controller (S-C) and controller-to-actuator (C-A) links are modeled by Markov chains. The designed output feedback controller is two-mode-dependent, which depends on the available S-C and C-A delay information. The closed-loop system is formulated as a special jump linear sys...

This paper investigates the static output-feedback mixed H2/H∞ control problem of discrete-time Markovian jump systems from a novel perspective. Unlike traditional methods, the closed-loop system is represented as an augmented form, in which input and gain-output matrices are decoupled. By virtue of the augmented representation, new characterizations on stochastic stability and H2/H∞ performanc...

Anton A. Stoorvogel Department of Mathematics and Computing Science Eindhoven Univ. of Technology P.O. Box 513, 5600MB Eindhoven The Netherlands For a general Hz optimal control problem, at first all Hz optimal measurement feedback controllers are characterized and parameterized, and then attention is focused on controllers with observer based architecture. Both full order as well as reduced or...