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Finally, through a cluster analysis, we identified three teaching profiles depending on the frequency and type of ICT used Passive, Active, and Interpretative. The variable that produced the most consistent differences was previous ICT use.Double shot peening is the development of shot peening by shooting large media as a first shot and re-shooting again with smaller media as a second shot in order to achieve high residual compressive stress and hardness at the surface, while the in-depth effect can still be maintained. This research aims
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