When an undular bore is propagating upstream against a subcritical flow in flat channel, its leading front may weaken and vanish. The present study physically investigated the whole decaying process of vanishing bores relatively large facility. invert was made mobile or fixed natural river gravels. Detailed sampling water surface elevations velocities performed combination with high-resolution ...

Degradation and overstress failures occur in many electronic systems which the operation load environmental conditions are complex. The dependency of them called dependent competing failure process (DCFP), has been widely studied. Electronic system may experience mutual effects degradation shocks, they considered to be interdependent. Both shock processes will decrease limit cause cumulative ef...