Evidence is presented that the damped Lyα absorption systems are the high-redshift (z > 3) progenitors of galaxy disks. I discuss kinematic evidence that the damped Lyα systems are rotating disks. I also discuss implications of the lack of metal-poor damped Lyα systems with line width ∆v > 100 km s. I then present new evidence stemming from correlations between element-abundance ratios and [Fe/...

The casing of large electrical generators can be deformed slightly by the rotor's magnetic field. The sound emission produced by these periodic deformations, which could possibly exceed guaranteed noise emission limits, is analyzed analytically and numerically. From the deformation of the casing, the normal velocity of the generator's surface is computed. Taking into account the corresponding s...

Strain-rate-based damping is investigated in the strong form of intrinsic equations three-dimensional geometrically exact beams. Kelvin–Voigt damping, often limited literature to linear or two-dimensional beam models, generalized case, including rigid-body motions. The result an elegant infinite-dimensional description beams that facilitates theoretical analysis and sets baseline for any chosen...

The linearly damped oscillator equation is considered with the damping term generalized to a Caputo fractional derivative. The order of the derivative being considered is 0 ≤ v ≤ 1. At the lower end v 0 the equation represents an undamped oscillator and at the upper end v 1 the ordinary linearly damped oscillator equation is recovered. A solution is found analytically, and a comparison with the...

We consider a finite dimensional damped second order system and obtain spectral inclusion theorems for the related quadratic eigenvalue problem. The inclusion sets are the ’quasi Cassini ovals’ which may greatly outperform standard Gershgorin circles. As the unperturbed system we take a modally damped part of the system; this includes the known proportionally damped models, but may give much sh...

The state evolution of the initial optical noon state is investigated. The residue entanglement of the state is calculated after it is damped by amplitude and phase damping. The relative entropy of entanglement of the damped state is exactly obtained. The performance of direct application of the damped noon state is compared with that of firstly distilling the docoherence damped state then appl...

Abstract In earlier days, the only way to resist lateral loads was increase strength of structure obtained by making larger cross sections and massive buildings. Structural control is one solutions important topics in both points view security comfort recent years. To reduce effect seismic energy, structural forms used outrigger. years, supplementary devices are installed into outrigger so that...

<span lang="EN-US">The robotic arm has functioned as an in the humanoid robot and is generally used to perform grasping tasks. Accordingly, kinematics modeling both forward inverse required calculate end-effector position cartesian space before performing activities. This research presents of six degrees freedom (6-DOF) T-FLoW for mechanism visual systems on operating system (ROS) platfor...

A broad sample of fluid models for instability-driven plasma turbulence is surveyed to determine whether saturation involving damped eigenmodes requires special physics or is a common property of plasma turbulence driven by instability. Previous investigations have focused exclusively on turbulence in the core of tokamak discharges. The models surveyed here apply to a wide range of physical mec...

We consider a beam-string-beam transmission problem, where two structurally damped or undamped beams are coupled with frictionally string by conditions. show that for this structure, the dissipation produced frictional part is strong enough to produce exponential decay of solution no matter how small its size. For stability in damped-damped-damped situation we use energy method. undamped-damped...