Abstract: A system and method for analysis of steps of action of a person in activity in an environment with potential occlusion and without the need to use of invasive equipment. Non-limiting implementations use posture registration and postural analysis based on an observation protocol that allows reconstruction, in a digital human simulation environment, of the adopted postures observed in a real time situation or by video.

Abstract: Impact tools (e.g., riveters) are provided with anti-vibration protection by a cushion pad and an elastomeric sheath. The cushion pad may be formed of a shape-conformable elastomeric material which is adapted to being conformably placed onto a rear surface of the impact tool handle, while the elastomeric sheath is preferably sized and configured so as to removeably envelop the impact tool handle and the cushion pad. The cushion pad may have a widthwise dimension such that lateral edge regions of the cushion pad are adapted to being at least partly folded over and onto respective side surface portions of the impact tool handle. In some implementations, the cushion pad has a lengthwise dimension such that the cushion pad is adapted to being positioned adjacent to a rear end of the impact tool housing and extends therefrom to a position adjacent a lower surface of the impact tool handle.