Abstract: The present disclosure provides computer-implemented methods, systems, and devices for generating multistep explanations for pedagogical exercises. A computing device receives a query from a user. The computing device determines that the query includes query data describing a pedagogical exercise to be solved. The computing device provides the query data as input to an explanatory machine-learned model. The computing device receives, as output from the explanatory machine-learned model, a pedagogical response, the pedagogical response including a multi-step explanation of a solution to the pedagogical exercise. The computing device provides the pedagogical response for display to a user.

Abstract: A lifting apparatus (100) for hoisting a spider (200) of a gyratory crusher has a spreader (110) spanning between two leg members (120) each having an offset arm (121a), clearing arm (121b), cradle arm (121c), and securing arm (121d). The offset arm (121a) forms a second offset distance (131) with respect to an offset axis (C). The arms (121a-121d) form an opening (123) for receiving the spider (200). The leg members (120) oppose each other such that the clearing arms (121b) of the leg members (120) are provided on opposite sides of a plane defined by the horizontal axis (D) and vertical axis (A). The lifting apparatus (100) may be lowered over the spider (200), and rotated approximately 90 degrees in a direction (B) of rotation about the vertical axis (A) to cradle and support the spider (200) from below the spider (200).

Abstract: A lifting apparatus (100) for hoisting a spider (200) of a gyratory crusher has a spreader (110) spanning between two leg members (120) each having an offset arm (121a), clearing arm (121b), cradle arm (121c), and securing arm (121d). The offset arm (121a) forms a second offset distance (131) with respect to an offset axis (C). The arms (121a-121d) form an opening (123) for receiving the spider (200). The leg members (120) oppose each other such that the clearing arms (121b) of the leg members (120) are provided on opposite sides of a plane defined by the horizontal axis (D) and vertical axis (A). The lifting apparatus (100) may be lowered over the spider (200), and rotated approximately 90 degrees in a direction (B) of rotation about the vertical axis (A) to cradle and support the spider (200) from below the spider (200).

Abstract: The present invention relates to ultraviolet light-activated disinfectants, and more particularly to a light-activated disinfection system for contact lens disinfection.

Abstract: The present invention relates to ultraviolet light-activated disinfectants, and more particularly to a light-activated disinfection system for contact lens disinfection.

Abstract: A fixed transparent module (FTM) for the roof of a vehicle having glass for cementing to the roof support surfaces to form a continuous seal; at least one compensation part running essentially parallel the roof support surface in a manner defining a space of substantially constant dimension between said outside surface of the compensation material and said roof support surface for receiving a cement layer of constant thickness; and at least one trim ring attached to said glass pane having a guide pin and attachment points, wherein said glass pane has added support, attachment points for additional features, and allowance for proper alignment of FTM to a vehicle body. Calibration stops can be added having a height that corresponds to the desired cement thickness of the cement layer. A reinforcement assembly, electric or manual sun shades can be added or, alternatively, the glass can be self darkening or use photoelectrochromic technology.