3 research outputs found
Analysis and prevention of dent defects formed during strip casting of twin-induced plasticity steels
Rapid-solidification experiments were conducted for understanding dent defects formed during strip casting of twin-induced plasticity (TWIP) steels. The rapid-solidification experiments reproduced the dent defects formed on these steels, which were generally located at valleys of the shot-blasted roughness on the substrate. The rapid-solidification experiment results reveal that the number of dips, the Mn content of the steel, and the surface roughness of the substrate affect the depth and size of dents formed on the solidified-shell surfaces, while the composition of the atmosphere gases and the carbon content of the steel are not factors. The formation of dents was attributed to the entrapment of gases inside the roughness valleys of the substrate surface and their volume expansion due to the temperature of the steel melt and the latent heat. The dents could be prevented when the thermal expansion of gases was suppressed by making longitudinal grooves on the substrate surface, which allowed the entrapped gases to escape. Sound solidified shells were obtained by optimizing the width and depth of the longitudinal grooves and by controlling the shot-blasting conditions.ope
Future Transformer for Long-term Action Anticipation
The task of predicting future actions from a video is crucial for a
real-world agent interacting with others. When anticipating actions in the
distant future, we humans typically consider long-term relations over the whole
sequence of actions, i.e., not only observed actions in the past but also
potential actions in the future. In a similar spirit, we propose an end-to-end
attention model for action anticipation, dubbed Future Transformer (FUTR), that
leverages global attention over all input frames and output tokens to predict a
minutes-long sequence of future actions. Unlike the previous autoregressive
models, the proposed method learns to predict the whole sequence of future
actions in parallel decoding, enabling more accurate and fast inference for
long-term anticipation. We evaluate our method on two standard benchmarks for
long-term action anticipation, Breakfast and 50 Salads, achieving
state-of-the-art results.Comment: Accepted to CVPR 202