The electronic state spectroscopy of carbonyl sulphide, COS, has been investigated using high resolution vacuum ultraviolet photoabsorption spectroscopy and electron energy loss spectroscopy in the energy range of 4.0-10.8 eV. The spectrum reveals several new features not previously reported in the literature. Vibronic structure has been observed, notably in the low energy absorption dipole for...

The dipole polarizability and adiabatic correlations of atomic ions are related to the energy levels and oscillator strengths of the levels through bracketing inequalities. For systems with a ground state ns2 S0, the total oscillator strength is dominated by the unbranched intrashell ns2 S0–nsnp P1 transition, and the remaining oscillator strength can be narrowly bracketed using the f -sum rule...

This paper presents linear models built for the purpose of investigating tempo-dependent interaction between two components of Polish speech rhythm, namely Rhythmic Prominence Intervals (RPI) and syllables, within the framework of coupled oscillator model ([1], [2], [3]). The relative coupling strength parameter (r) calculated from regression coefficients shows increasing strength of the lower-...

Effects of noise and cyclic input on the period of coupled Bonhoeffer-van der Pol (BVP) oscillators are studied with computer simulation. When the noise and cyclic input are added to a fast variable of a single BVP oscillator, the mean oscillation period is monotonically decreased as the strength of noise and the amplitude of input. When two oscillators are linearly coupled and the noise and cy...

The dynamical behaviour of the forced escape oscillator, which depends on the parameter values we considered, have been studied numerically using the techniques of phase portraits and Poincar'{e} sections. Also, we employed perturbation methods such as Lindstedt's method to obtain the frequency-amplitude relation of escape oscillator.