Abstract: A computer program causes one or more processors to execute: retrieving a change amount of each of a plurality of specific portions of a body on the basis of data regarding a motion of the body retrieved by a sensor; determining that a specific facial expression or motion is formed in a case where all change amounts of one or more specific portions specified in advance among the change amounts of the plurality of specific portions exceed respective threshold values; and generating an image or a moving image in which a specific expression corresponding to the determined specific facial expression or motion is reflected on an avatar object corresponding to a performer.

Abstract: A game device calculates a shift angle A based on a magnitude of a velocity vector S of a moving object MO and inclination information that indicates an inclination of a controller, calculates a direction D of the moving object on a slope based on a direction of the velocity vector S of the moving object and the shift angle A, calculates a first force vector P1 in the direction intersecting at right angles on the slope with the direction D of the moving object on the slope based on the inclination information, calculates a second force vector P2 based on a slope angle of the slope, calculates a resultant force vector PS by combining the first force vector P1 and the second force vector P2, updates the velocity vector S of the moving object based on the resultant force vector PS, and updates a position of the moving object MO based on the updated velocity vector.

Abstract: A game device calculates a shift angle A based on a magnitude of a velocity vector S of a moving object MO and inclination information that indicates an inclination of a controller, calculates a direction D of the moving object on a slope based on a direction of the velocity vector S of the moving object and the shift angle A, calculates a first force vector P1 in the direction intersecting at right angles on the slope with the direction D of the moving object on the slope based on the inclination information, calculates a second force vector P2 based on a slope angle of the slope, calculates a resultant force vector PS by combining the first force vector P1 and the second force vector P2, updates the velocity vector S of the moving object based on the resultant force vector PS, and updates a position of the moving object MO based on the updated velocity vector.

Abstract: A bearing with a ball contact with a raceway groove of one of an outer ring and an inner ring at one point and the other at two points. The surface of the ball and the surface of the race of the outer ring and the race of the inner ring were provided with a phosphorus-based modified layer. The ball bearing is at a rotary speed as high as not lower than 70 m/s as calculated in terms of V and a load as small as not greater than 0.05 as calculated in terms of Pr/Cr supposing that the dynamic equivalent radial load is Pr, the basic dynamic rated load is Cr, one of the inner ring and the outer ring is a driving ring and the slip rate of the ball to the one of the inner ring and the outer ring as a driving ring is V.

Abstract: A bearing with a ball contact with a raceway groove of one of an outer ring and an inner ring at one point and the other at two points. The surface of the ball and the surface of the race of the outer ring and the race of the inner ring were provided with a phosphorus-based modified layer. The ball bearing is at a rotary speed as high as not lower than 70 m/s as calculated in terms of V and a load as small as not greater than 0.05 as calculated in terms of Pr/Cr supposing that the dynamic equivalent radial load is Pr, the basic dynamic rated load is Cr, one of the inner ring and the outer ring is a driving ring and the slip rate of the ball to the one of the inner ring and the outer ring as a driving ring is V.

Abstract: A fine nitride layer comprising a compound layer and a diffusion hardened layer of hardness being Hv900 or higher is formed, through a low temperature nitriding method at temperature in the range of 300 to 400° C., in a guiding part. The guiding part guides the circumferential surfaces of retainers 7a to 7c and is formed at any one part of inner ring raceways 3a to 3c and outer ring raceways 4a to 4c as well as the inner circumferential surfaces of the outer rings 5a to 5c, to thereby realize such rolling bearings at low cost, having excellent abrasion resistance, and good corrosion resistance, if needed.

Abstract: A fine nitride layer comprising a compound layer and a diffusion hardened layer of hardness being Hv900 or higher is formed, through a low temperature nitriding method at temperature in the range of 300 to 400° C., in a guiding part. The guiding part guides the circumferential surfaces of retainers 7a to 7c and is formed at any one part of inner ring raceways 3a to 3c and outer ring raceways 4a to 4c as well as the inner circumferential surfaces of the outer rings 5a to 5c, to thereby realize such rolling bearings at low cost, having excellent abrasion resistance, and good corrosion resistance, if needed.