Seismic base isolation are devices that used to limit the human and material damage caused by an earthquake. This devices diffuse the energy induced at the time of the earthquake before being transferred to the structure.The base isolated structures when subjected to the near-fault eathquakes which contain long-period velocity pulses that may coincide with the period of base isolated structures...

Abstract There are three overlapping objectives in the article. The first objective is to present different Marxist perspectives, while focusing on interpretation of base/superstructure dialectic which key understanding Marxian political economy. second make sense and “Cold Wars” based interpretations dialectic. last reassert materialist essence by evoking Marx his concepts “Labor” “Capital”. p...

The Hader bar system is a popular bar and clip concept because of its 20-degree clip rotation, simplicity, and versatility. Two procedures may be used to incorporate the Hader nylon clip into a denture base. The direct technique consists of attaching the clip to the denture base as a clinical procedure. With the indirect technique, the clip is attached during laboratory processing. An alternati...

This paper presents a semiactive control strategy for the seismic protection of the phase II smart base isolated benchmark building subjected to near-fault earthquakes. Magnetorheological (MR) fluid dampers controlled by an optimal direct output feedback control algorithm with a voltage generator are used as semiactive control devices. The benchmark building is an eight-story base isolated buil...

it has been pointed out the static lateral response procedure for a base-isolated structure proposed in international building code (ibc) somewhat overestimates the seismic story force. that is why in the current paper, vertical distribution of base shear over the height of isolated structures considering higher mode effects under near field earthquakes is investigated. nonlinear behavior of is...