There is increasing evidence that globular clusters retain sizeable black hole populations at present day. This supported by dynamical simulations of cluster evolution, which have unveiled the spatial distribution and mass spectrum holes in across cosmic age. However, young, high metallicity remain unconstrained. Black hosted these segregate early their evolutionary history, forming central sub...

Two vehicle chassis design tasks were solved by decomposition-based multi-disciplinary optimisation (MDO) methods, namely collaborative (CO) and analytical target cascading (ATC). A passive suspension system was optimised applying both CO ATC. Multiple parameters of the spring damper selected as variables. The discomfort, road holding, total mass spring–damper combination objective functions. A...

Periods, eccentricities, and masses in hierarchical stellar systems inform us on the formation early evolution of these fascinating objects. To complement multiplicity statistics nearby solar-type stars, 19 new spectroscopic orbits inner subsystems 15 hierarchies (10 triples 5 quadruples) are determined based high-resolution echelle spectra collected during several years. While previous papers ...

Consider a state of a system with several subsystems. The entropies of the reduced state on diierent subsystems obey certain inequalities, provided there is an equivalence relation, and a function measuring volumes or weights of subsystems. The entropy per unit volume or unit weight, the mean entropy, is then decreasing with respect to an order relation of the subsystems, deened in this paper. ...

A general mathematical description of the terminal behavior of subsystems is discussed. It allows to combine different modeling methods, e. g. network models, block models, and bondgraphs together. The resulting equations can be solved with a general network analysis program. This approach is effectively applied in modeling electrical as well as non-electrical subsystems. Extensions to digital ...