Abstract: Alpine ski comprising a tip zone located at the front of the ski, a waist zone, and a tail zone located at the rear of the ski, a median longitudinal plane extending from the front end to the rear end of the ski, an underside formed by a gliding sole bordered by edges, a zone for mounting a boot, the middle of which, in the longitudinal direction, is located at a mid-shoe line (MC), and having a sidecut with: a front contact line (PA) defined as the line of contact between the gliding sole and a horizontal surface against which the sole is pressed when the waist is loaded, which is located furthest forward; a rear contact line (PB) defined as the line of contact between the gliding sole and said horizontal surface, which is located furthest back; a line of greater front width (PI) located at or further forward than the front contact line (PA); a line of greater rear width (PII), located at or more rear than the rear contact line (PB); a zone of minimum width (PIII) located in the waist zone, said sidecut havi

Abstract: A system for analysis of the performance in use of a sliding board includes a database storing baseline performance; a sensor sensitive to the deformations of said sliding board; and a monitoring body. The monitoring body determines the performance in use based on measurements from the sensor; and compares the performance in use with the baseline performance. The sensor is secured to the sliding board and has at least one piezoelectric element secured to the sliding board and configured to generate electric energy during the deformations of the sliding board; and an electronic processing circuit, powered exclusively by the electric energy generated by the at least one piezoelectric element.

Abstract: A system for analysis of the performance in use of a sliding board includes a database storing baseline performance; a sensor sensitive to the deformations of said sliding board; and a monitoring body. The monitoring body determines the performance in use based on measurements from the sensor; and compares the performance in use with the baseline performance. The sensor is secured to the sliding board and has at least one piezoelectric element secured to the sliding board and configured to generate electric energy during the deformations of the sliding board; and an electronic processing circuit, powered exclusively by the electric energy generated by the at least one piezoelectric element.

Abstract: Each of a first information processing apparatus and a second information processing apparatus includes a display, an operation portion, and a radio communication unit. The second apparatus transmits operation information accepted by the operation portion of the second apparatus to the first apparatus through the radio communication unit. The first apparatus performs application processing based on operation information accepted by the operation portion of the first apparatus and the operation information from the second apparatus, generates an application image including a result of execution of the application processing, shows the application image on the display of the first apparatus, and transmits the application image to the second apparatus through the radio communication unit of the first apparatus. The second apparatus shows the application image from the first apparatus on the display of the second apparatus.