The effect of different cushion layers on the stress were propagation in structure were investigated by dynamic photoelastic method.

The effect of stress waves with different cushion layers were researched with the dynamic photoelasticity, and propagation and interaction of stress waves in structure were compared under shock load, and stress vs time curves of appointed points were obtained.

The main methods to improve water injection development effect of high water-cut development oilfield are remaining oil study, well pattern adjustment, ineffective water recycle management and separate-layer water allocation optimization,etc.

The technique on water injection for three intervals in one step and separate measuring include multi-zone flow regulation tools and matching measuring tools.

This paper presents a global routing algorithm that performs layer assignment before routing.

Aiming at optimizing interconnect timing directly,assigning proper routing layer resource and considering via-induced-delay and coupling-induced-delay simultaneously,a timing driven layer assignment algorithm for multilayer routing problem is proposed.

Calculation analysis of the storey distribution of hysteretic energy for frame structures;