Abstract: A toilet device includes a toilet seat disposed on an upper side of a toilet; an image sensor provided on a back surface of the toilet seat and configured to image an inner space of a toilet bowl at time of excretion; an open-close acquiring device configured to acquire open-close information of the toilet seat; and an imaging controller configured to determine whether or not to image by the image sensor according to the open-close information of the toilet seat acquired by the open-close acquiring device.

Abstract: A determination device includes an image information acquirer configured to acquire image information of a subject image obtained by photographing an internal space of a toilet bowl in excretion; an estimator configured to perform estimation regarding a determination matter relating to excretion by inputting the image information to a learned model, the learned model having learned a correspondence relationship between an image for learning and a determination result of the determination matter relating to excretion, the learned model learned by machine learning using a neural network, the image for learning representing an internal space of a toilet bowl in excretion; and a determiner configured to perform determination regarding the determination matter of the subject image based on an estimation result obtained by the estimator.

Abstract: A tire has a tread pattern comprising a series of a number N of tread design units arranged repeatedly and circumferentially of the tire in a sequence. The tread design units have at least two different circumferential lengths. Viewing the tread design units as pulses, a pulse train is defined. Magnitudes of the pulses are proportional to the circumferential lengths of the tread design units. The average of the magnitudes corresponding to the different circumferential lengths is limited to 1.00. Maximum value Fmax of amplitude F(k) of k-th order (k=1 to 2N) of frequencies obtained by Fourier transforming the pulse train is limited to be 4.52?0.0125 N. The amplitudes F(k) and F(k+1) of every two of the adjacent orders (k) and (k+1) are limited so as not to satisfy a condition that both of the amplitudes F(k) and F(k+1) are 2/3 or more times the Fmax.

Abstract: A tire is provided with a tread pattern comprising a series of a number N of tread design units arranged repeatedly and circumferentially of the tire in a sequence and having a number m of different circumferential lengths. A first pulse train is defined by viewing the tread design units as pulses arranged in the same sequence as the tread design units at intervals which are defined by the circumferential lengths of the corresponding tread design units expressed in term of a ratio to one of the number m of different circumferential lengths. A maximum value Pmax of amplitudes P(k) (k=order from 1 to 2N) of frequencies obtained by Fourier transforming the first pulse train is limited to specific values. The amplitudes P(k) and P(k+1) of every two of the adjacent orders (k) and (k+1) do not satisfy a condition that both of the amplitudes P(k) and P(k+1) have values of 2/3 or more times the maximum value Pmax.

Abstract: Provided is a toilet device that obtains a more detailed estimation result of a health condition. A toilet device (1) includes a toilet body (10) that includes a toilet bowl part (11), a camera (20) that photographs feces discharged and falling into the toilet bowl part (11) in time series and acquires a plurality of still images of the feces, and a fecal properties estimation part (30) that estimates a change in property of the feces from the plurality of still images acquired by the camera (20). The toilet device (1) estimates the change ire the property of the feces from the still images of the feces photographed in time series by the camera (20). Therefore, it is possible to obtain more detailed information on a user's health condition, in particular, the health condition of a digestive system (an intestinal environment).

Abstract: The object of the present invention is to provide an ultrafine zinc oxide having a sufficient visible light transmittance in addition to an infrared ray shielding ability and conductivity, and also to provide a production method thereof. The ultrafine zinc oxide contains an element having a valence number of 3 or more, bears a metal compound on the surface, and has an average primary particle diameter of 0.1 ?m or smaller.