Abstract: An apparatus for measuring eye's moisture 1 includes: a detection surface 30 placed on a position in contact with a conjunctiva, a sclera, or a cornea or a position opposed to a conjunctiva, a sclera, or a cornea; and a capacitance sensor 40 provided on the detection surface 30. As a result, an apparatus and a method for measuring eye's moisture that are capable of simply and objectively measuring the state of tear fluid are provided.

Abstract: It is an object of this invention to provide a stress assessment device capable of assessing mental stress without requiring another previous knowledge or imposing a load on an observer or an employee. A stress assessment device (10) of this invention includes: a work behavior acquisition unit (101) for acquiring a work behavior time-series pattern serving as information indicating a work behavior of each employee in temporal units; an eigen-behavior time-series pattern calculation unit (102) for calculating an eigen-behavior time-series pattern serving as information indicating a standard work behavior of each employee by using the work behavior time-series pattern; and a stress state assessment unit (103) for calculating a reconstruction accuracy indicating a degree to which the work behavior time-series pattern of each employee and the eigen-behavior time-series pattern agree with each other and assessing a stress state of the employee based on the calculated reconstruction accuracy.

Abstract: A control unit transmits address area designation information designating an arbitrary bit position in ID data. At least a response unit transmits a response signal with an error detection code attached to predetermined information in the unique information held in itself by means of a time slot determined by the address area designation information and the ID data of the particular response unit. The control unit checks for the presence or absence of an error of the information in each time that has arrived, fetches only the response signal free of error, and transmits the error presence-absence information indicating the inspection result. Further, in the case where there exists a time slot having an error, the control unit transmits new address area designation information.