Abstract: A nap environment determination system is configured to determine an environment condition during a nap. The nap environment determination system includes a pre-nap information acquisition unit configured to acquire pre-nap information regarding a subject who takes a nap before the subject takes the nap, and a determination unit configured to determine an environment condition to adjust a sleep depth, based on the pre-nap information.

Abstract: An analysis system and method are provided for analyzing physical information and acquiring biological data of a user from a biological data acquisition sensor. The exemplary analysis system includes a circadian rhythm calculator that calculates an average circadian rhythm of the user; an autonomic nerve analyzer that performs autonomic nerve analysis based on a variation in the biological data; and a physical information analyzer that weights an autonomic nerve analysis result analyzed by the autonomic nerve analyzer with a weighting coefficient set based on a measurement time at which the biological data of the user is acquired and a cycle of the average circadian rhythm. The physical information analyzer also estimates a change in a circadian rhythm with respect to the average circadian rhythm based on the weighted autonomic nerve analysis result.

Abstract: A fatigue recovery support apparatus includes a circadian rhythm acquisition module which acquires a circadian rhythm, a pattern determination module which determines the acquired pattern of the circadian rhythm, a sleep determination module which determines a sleep quality, a relational data store which in advance stores relational data presenting a relationship among the circadian rhythm pattern, the sleep quality, and a fatigue recovery effect of sleep, and a recovery effect determination module which estimates the fatigue recovery effect of sleep based on the circadian rhythm pattern, the sleep quality, and the relational data.

Abstract: The estimation of the sleep stage at a time point where data does not exist, is enabled. An acquiring unit configured to acquire biological data indicating a wave of a heartbeat; a parameter estimating unit configured to estimate a parameter by using the biological data, with respect to a mathematical expression defining a medium frequency component of the wave of the heartbeat by using the parameter; and a sleep stage estimating unit configured to estimate a sleep stage from a value of the medium frequency component at any time point, based on the mathematical expression to which the estimated parameter is applied, are included.

Abstract: The estimation of the sleep stage at a time point where data does not exist, is enabled. An acquiring unit configured to acquire biological data indicating a wave of a heartbeat; a parameter estimating unit configured to estimate a parameter by using the biological data, with respect to a mathematical expression defining a medium frequency component of the wave of the heartbeat by using the parameter; and a sleep stage estimating unit configured to estimate a sleep stage from a value of the medium frequency component at any time point, based on the mathematical expression to which the estimated parameter is applied, are included.

Abstract: A program includes step S1 of inputting types of cargo transfer bags as objects of determining arrangement, step S2 of determining arrangement of triple-size cargo transfer bags, step S3 of determining arrangement of double-size cargo transfer bags, step S4 of determining arrangement of single-size cargo transfer bags, and step S5 of determining arrangement of half-size cargo transfer bags. Arrangement of triple-size cargo transfer bags is determined through the same mechanism as that for the double-size cargo transfer bags, and arrangement of single-size cargo transfer bags is determined through the same mechanism as that for the half-size cargo transfer bags.