The occurrence of catastrophic earthquakes necessitates further researches in the structure engineering for retrofitting construction structures. In this paper, the application of the active control in the structures’ seismic response has been addressed. A single degree of freedom nonlinear structure has been studied. The nonlinear dynamic of the structure is considered in which, the nonlinear ...

efficiency of numerical methods is an important problem in dynamic nonlinear analyses. it is possible to use of numerical methods such as beta-newmark in order to investigate the structural response behavior of the dynamic systems under random sea wave loads but because of necessity to analysis the offshore systems for extensive time to fatigue study it is important to use of simple stable meth...

A simulation formalism for the nonlinear response of vibrational excitons is presented and applied to the OH stretching vibrations of neat liquid H(2)O. The method employs numerical integration of the Schrodinger equation and allows explicit treatment of fluctuating transition frequencies, vibrational couplings, dipole moments, and the anharmonicities of all these quantities, as well as nonadia...

We present a theoretical model to study the nonlinear optical response of materials with low-energy spectrum characterised by strongly tilted, type-II, Weyl cones in two dimensions, which we call 2D materials. Our findings reveal that tilted nature is responsible for appearance even harmonics signal, as well its strong polarisation dependence. discuss how it possible control such and envision c...

Inspired by the observation of a distributed time delay in nonlinear response an optical resonator, we investigate effects similar on noise-driven mechanical oscillator. For that is commensurate with inverse dissipation rate, find stable limit cycles. longer delays, discover regime chaotic dynamics associated double scroll attractor. We also analyze spectrum and oscillation amplitude Our result...

Fiber nonlinearities, that lead to nonlinear signal interference (NLI), are typically regarded as an instantaneous material response with respect the optical field. However, in addition part, fiber consists of a delayed contribution, referred Raman response. The imaginary part its Fourier transform, gain spectrum, leads inter-channel stimulated scattering (ISRS). ISRS is effect redistributes po...

AbatmctSpread spectrum (SS) communications offers a promising solution to an overcrowded frequency spectrum amid growing demand for mobile and personal communications services. The proposed overlay of spread spectrum signals on existing narrowband users implies strbng interference for the SS system, This paper discusses how system performance can be improved by preprocessing to suppress narrowb...

The occurrence of catastrophic earthquakes necessitates further researches in the structure engineering for retrofitting construction structures. In this paper, the application of the active control in the structures’ seismic response has been addressed. A single degree of freedom nonlinear structure has been studied. The nonlinear dynamic of the structure is considered in which, the nonlin...