Geometric imperfections such as radial imperfection, diamond shape, and local dimples could affect the buckling mode and load carrying capacity of axially compressed steel tubular columns. This paper experimentally investigates the effect of radial imperfection on the load carrying capacity of tubular columns. Test samples include 100 specimens with different values for diameter, length, thickn...

In the present investigation, we study the reflection of plane waves, that is, Longitudinal displacement wave(P-Wave), Thermal wave(T-Wave) and Mass Diffusive wave(MD-Wave) in thermodiffusion elastic-half medium which is subjected to impedence boundary condition in context of one relaxatioon time theory given by Lord and Shulman theory (L-S) and the Coupled theory (C-T) of thermoelasticity. The...

We describe a method for computing theoretical photometric amplitude ratios for a number of modes of nonradially pulsating subdwarf B stars in both SDSS and UBVR systems. In order to avoid costly solutions of the non-adiabatic nonradial pulsation equations, we have adopted the adiabatic approximation. We argue that this is a valid approach, at least for the V361 Hya stars, because observations ...

Amplitude-phase information of the voltage/current phasor, which is prerequisite for grid-tied converter control and protection, can change almost instantaneously in low-voltage distribution systems with small X/R ratios. However, equivalent impedances high-voltage power are usually inductive (with large ratios), flow pertinent grids generates decaying dc (DDC) components amplitude long duratio...

The present study explores non-durational correlates of the word-initial voiceless stop singleton/geminate contrast in Kelantan Malay (KM) by focusing on the relative values of amplitude and F0 across two syllables of disyllabic words. We are particularly interested in identifying any inter-syllabic differences that could potentially enhance the acoustic salience of voiceless stop geminates in ...

The ratio of acoustic myography (AMG) amplitude to surface electromyography (EMG) amplitude is proposed as a measure of mechanical output compared with electrical activity of the contractile system. AMG to EMG ratios were measured from 16 children with muscle disease diagnosed by clinical criteria, EMG, and/or muscle biopsy. These were compared with the ratios from 11 normal volunteers spanning...

The present investigation is concerned with the propagation of waves at an imperfect boundary of heat conducting elastic solid and micropolar fluid media. The amplitude ratios of various reflected and transmitted waves are obtained in a closed form due to incidence of longitudinal wave (P-wave), thermal wave (T-wave), and transverse wave (SV-wave). The variation of various amplitude ratios with...

A new synchronization system is proposed based on the Lyapunov function scheme by introducing the amplitude parameters for projective synchronization with different ratios. Consequently, the complicated controller is replaced by a signal with scale information from the other side of the synchronization system. Based on amplitude control, different regimes of projective synchronization are obtai...