We develop a complete state-space solution to H2-optimal decentralized control of poset-causal systems with state-feedback. Our solution is based on the exploitation of a key separability property of the problem, that enables an efficient computation of the optimal controller by solving a small number of uncoupled standard Riccati equations. Our approach gives important insight into the structu...

The first application of the time-dependent close-coupling method to electron– molecule scattering is used to calculate electron-impact ionization cross sections for H2. The time-dependent Schrödinger equation for the sixdimensional wavefunction is reduced to a set of close-coupled equations on a four-dimensional numerical lattice in (r1, θ1, r2, θ2) centre-of-mass spherical polar coordinates. ...

The present paper addresses the mixed H2/H∞ norm analysis and feedback control design problem for structural systems with collocated actuators and sensors. The mixed norm formulation provides a trade-off measure of a system performance and robustness in the presence of uncertainties in the system model. First, we develop an explicit upper bound expression for the mixed H2/H∞ norm of collocated ...

We consider estimation and control of the cylinder wake at low Reynolds numbers. A particular focus is on development efficient numerical algorithms to design optimal linear feedback controllers when there are many inputs (disturbances applied everywhere) outputs (perturbations measured everywhere). propose a resolvent-based iterative algorithm perform i) flow using limited number sensors; ii) ...

Motivated by biochemical reaction networks, a generalization of the classical secant condition for stability analysis cyclic interconnected commensurate fractional-order systems is provided. The main result presents sufficient networks interconnection when digraph describing network conforms to single circuit. becomes necessary under special situation where coupling weights are uniform. We then...

The domination number of graph is the smallest cardinality set G. A subset a vertex S G called if every element dominates G, meaning that not an connected and one distance from S. has become interesting research studies on several graphs k -connected such as circulant graphs, grids, wheels. This study aims to determine other k-connected Harary graph. method used pattern detection axiomatic dedu...

We present JWST/MIRI MRS spectroscopy of NGC7319, the largest galaxy in Stephan's Quintet, observed as part Early Release Observations (ERO). NGC7319 hosts a type 2 active galactic nucleus (AGN) and low-power radio jet (L_1.4GHz=3.3x10^22 W Hz^-1) with two asymmetric hotspots at 430 pc (N2) 1.5 kpc (S2) projected distances from unresolved core. The data suggest that molecular material disk dece...

ABSTRACT High levels of deuterium fractionation N2H+ (i.e. $\mathrm{D^{{\mathrm{N_2H^+}}}_{\text{frac}}}$≳ 0.1) are often observed in pre-stellar cores (PSCs) and detection N2D+ is a promising method to identify elusive massive PSCs. However, the physical chemical conditions required reach such high deuteration still uncertain, as diagnostic utility observations We perform 3D magnetohydrodynami...