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 ...

When two or more subsystems of a quantum system interact with each other they can become entangled. In this case the individual subsystems can no longer be described as pure quantum states. For systems with only 2 subsystems this entanglement can be described using the Schmidt decomposition. This selects a preferred orthonormal basis for expressing the wavefunction and gives a measure of the de...

We consider quadratic stabilizability and H∞ disturbance attenuation of switched systems which are composed of a finite set of linear time-invariant subsystems. The situation is that none of the subsystems is quadratically stable with certain H∞ disturbance attenuation level but a convex combination of the subsystems achieves such performance. We then design a state-dependent switching signal (...

The approach to a substantiation of thermodynamics is offered. A conservative system of interacting elements, which is not in equilibrium, is used as a model. This system is then split into small subsystems that are accepted as being in equilibrium. Based on the D’Alambert equation for a subsystem the generalized Liouville equation is obtained. A necessary condition for irreversibility is deter...

Thinking in terms of SoS brings a 180 change in viewpoint. In traditional embedded systems design (being a subsystem in itself) we focus on how to effectively design those embedded subsystems to implement the functions of a device.This device plays a role in the physical world. With the introduction of embedded networking we move to cyber-physical systems in which these embedded subsystems now ...

The integration of multiple automotive subsystems (e.g., powertrain, safety, comfort) on a single distributed computer system can significantly reduce the number of Electronic Control Units (ECUs) and networks for in-vehicle electronic systems. The benefits of this integration include reduced hardware cost and reliability improvements due to fewer connectors. However, a major challenge in such ...