Purpose: Steel-spring-floating slab tracks are widely used in subway lines. It is necessary to analyze and study the vibration damping transmission characteristics of steel-spring-floating track various frequency bands under action train loads. Method: A ordinary monolithic tunnel sites with similar line conditions on straight curved segments were selected. The signals rail, bed, walls collecte...

Multi-constraint quality-of-service routing will become increasingly important as the Internet evolves to support real-time services. It is well known however, that optimum multi-constraint QoS routing is computationally complex, and for this reason various heuristics have been proposed for routing in practical situations. Among these methods, those that use a single mixed metric are the mo...

The augmented Lagrangian (AL) method provides a flexible and efficient framework for solving extended-space full-waveform inversion (FWI), constrained nonlinear optimization problem whereby we seek model parameters wavefields that minimize the data residuals satisfy wave-equation constraint. AL-based wavefield reconstruction inversion, also known as iteratively refined extends search space of F...

Abstract The radial acceleration relation (RAR) represents a tight empirical between the inferred total and baryonic centripetal accelerations, g tot = GM (< r )/ 2 bar , observed in galaxies galaxy clusters. correlation these two quantities can provide insight into nature of dark matter. Here we use BAHAMAS, state-of-the-art suite cosmological hydrodynamical simulations, to characterize RAR...