Pipe cooling is a significant measure for temperature control in the construction of concrete dam. In the past, studies concerning pipe control are quite simple, most of which are confined to the theories. They only focus on the positive effect of pipe control in reducing thermal rise, while paying little attention to its negative effects in elevating temperature stress. This paper carries out example verification on programs such as cooling height, distance between pipes, cooling stage, cooling temperature control, etc on the basis of simulation calculation program of the temperature field and thermal stress in the whole process, so as to seek the optimal effect of pipe cooling thus reducing thermal stress and improving the anti-crack reliability of the concrete.
Mixed defects have become increasingly popular in defect detection and one of the hottest research areas in wafer maps. Postprocessing methods used to solve the overlapping problem in mass mixed defects have a poor detection speed, which is insufficient for rapid defect detection. In this paper, the fast-soft nonmaximum suppression (fs-NMS) method is proposed to solve this problem. The score of the detection box is updated by optimizing the penalty distribution function. Further, this paper analyzes the performance of the fs-NMS method in wafer defect detection. As a penalty, the logistic function is used, and experiments are conducted using single-stage and two-stage detectors. The final results show that, compared to the soft-NMS, the efficiency for the single-stage and two-stage detectors is increased on average by 9.63% and 21.72%, respectively.
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