Abstract: An athletic information processing system includes: a reception unit configured to be capable of receiving subject information that identifies a subject, data about an objective individual-part fatigue-degree that is a degree of fatigue of the subject determined by measuring a muscle at an individual part determined in advance, and data about a subjective individual-part fatigue-degree that is a degree of fatigue in the muscle that is subjectively felt by the subject; an injury occurrence risk information database storing in association with one another the subject information, information about the muscle, and information indicating a risk of occurrence of injury to the subject, and a determination unit configured to be capable of determining a risk of occurrence of injury to the subject, based on the data about the objective individual-part fatigue-degree and the data about the subjective individual-part fatigue-degree in the injury occurrence risk information database.

Abstract: A method for measuring a radio wave propagation environment includes installing radio signal transmission and reception apparatuses where a radio network system is to be constructed and obtaining an electromagnetic wave measured value of a signal between transmission and reception apparatuses; estimating an electromagnetic wave propagation state of the signal using an electrical property and information on a three-dimensional structure at the site to obtain an electromagnetic wave estimated value; making a comparison between measured and estimated values for each time of day to determine when errors between measured and estimated values exceed a reference value; obtaining an electromagnetic path between transmission and reception apparatuses; and modifying structure information in the wave path to re-obtain the estimated value; and comparing the measured re-obtained estimated value to modify the three-dimensional structure information so that the error value becomes smaller.

Abstract: A method for measuring a radio wave propagation environment includes installing radio signal transmission and reception apparatuses where a radio network system is to be constructed and obtaining an electromagnetic wave measured value of a signal between transmission and reception apparatuses; estimating an electromagnetic wave propagation state of the signal using an electrical property and information on a three-dimensional structure at the site to obtain an electromagnetic wave estimated value; making a comparison between measured and estimated values for each time of day to determine when errors between measured and estimated values exceed a reference value; obtaining an electromagnetic path between transmission and reception apparatuses; and modifying structure information in the wave path to re-obtain the estimated value; and comparing the measured re-obtained estimated value to modify the three-dimensional structure information so that the error value becomes smaller.