Abstract: Provided is a technique for facilitating evaluation of a relationship between persons in work. An information processing device according to one embodiment includes: an acquisition unit that acquires an achievement value for each work representing an achievement of each work obtained when a plurality of workers is combined and allocated to the work; a calculation unit that calculates an evaluation value for each work by comparing the achievement value for each work with a reference value; a determination unit that determines quality of a relationship between the plurality of workers based on the evaluation value for each work; and a setting unit that sets, based on a result of the determination, a relationship value numerically representing the quality of the relationship between the plurality of workers.

Abstract: An optical sensor device includes a plurality of light-emitting elements arranged on an arrangement surface to be apart from each other in an x direction perpendicular to a z direction that is a direction connecting an area corresponding to the plurality of light-emitting elements and an area corresponding to a light-receiving element. A light-guide lens portion includes a plurality of incident portions respectively corresponding to the plurality of light-emitting elements and respectively receiving light from the plurality of light-emitting elements. The plurality of incident portions is provided with an equalizing portion configured to equalize intensity of the light incident on the light-guide lens portion along the x direction by reducing the intensity of the light along the z direction out of the light that is emitted from the light-emitting element, while allowing an incident of part of the light emitted from the light-emitting element adjacent to the corresponding light-emitting element.

Abstract: This invention relates to a massager and a massing method. There has been known a conventional leg massager described in Japanese Utility Model Registration No. 3043777. However, there are great differences between individuals in their configurations of the legs, i.e. the above-knee and below-knee parts. Specifically, the shape of the leg portion from ankle to calf of leg differs greatly in individuals, the conventional massager has suffered a disadvantage such that it is difficult to massage the whole leg sufficiently with a single roller and the work becomes onerous where changing the roller in accordance with the shape of the leg. In the light of the foregoing disadvantages of the conventional massager, the present invention was made to provide a massager comprising stays connecting a plurality of rollers, and operating parts extending longitudinally from the stays.