Abstract: An environmental control content determination device includes an acquisition part and a determination part. The acquisition part acquires pre-nap information and an expected nap time zone including an expected nap start time and an expected nap end time regarding a subject. The determination part judges a wakefulness level of the subject in the expected nap time zone based on the pre-nap information, and determines a content of environmental control for a target space in which the subject takes a nap. An environmental control content determination method includes acquiring pre-nap information and an expected nap time zone including an expected nap start time and an expected nap end time regarding a subject, and determining, based on the pre-nap information, a content of environmental control for a target space in which the subject takes a nap.

Abstract: A bone conduction hearing-aid unit that is entirely embedded under a scalp. The bone conduction hearing-aid unit includes a vibration generating device configured to generate vibration, and an anchor fixed to a skull and configured to transmit the vibration to the skull. The vibration generating device is detachably fixed to the anchor.

Abstract: A bone conduction hearing-aid unit embedded under a scalp. The bone conduction hearing-aid unit includes a vibration generator configured to generate vibration, and an anchor. A magnetic field frequency is applied to the vibration generator from the outside of the scalp to generate vibration. The vibration is transmitted to a skull via the anchor.

Abstract: An optical measurement device includes: a light source generating an optical frequency comb; a first optical path guiding an optical pulse train having a pulse interval based on the repetition frequency of the optical frequency comb and an inter-pulse phase difference based on a carrier envelope offset frequency and a repetition frequency to a measurement target; a second optical path guiding measurement result light acquired from the measurement target; a third optical path guiding delay light acquired by delaying the optical pulse train; an interference unit causing the measurement result light guided by the second optical path and the delay light guided by the third optical path to interfere with each other; and a control unit performing variable control of at least one of the carrier envelope offset frequency and the repetition frequency of the light source on the basis of the state of light.

Abstract: A wavefront control device includes: an optical frequency comb generating part configured to emit an optical frequency comb including a plurality of light pulses arranged in numerical order on a time axis; and a wavefront synthesizing part configured to distribute the plurality of light pulses of the optical frequency comb incident from the optical frequency comb generating part to different positions according to phases relative to the first light pulse on a surface crossing a traveling direction of the optical frequency comb and to generate a synthetic wavefront of the light pulses emitted from the different positions. The optical frequency comb generating part includes a phase controlling part configured to control a repetition frequency and an offset frequency of the optical frequency comb.

Abstract: A method of producing a tin-based perovskite layer includes: preparing a first solution by dissolving a tin-based perovskite compound in a solvent that does not contain dimethyl sulfoxide (DMSO); after the preparing of the first solution, mixing the DMSO with the first solution; and applying the first solution mixed with the DMSO to a base. The mixing is performed a predetermined time before the applying of the first solution mixed with the DMSO to the base.

Abstract: A Pb-free Sn-halide Perovskite solar cell with improved photoelectric conversion efficiency is provided. A solar cell uses a perovskite compound represented by ABX3 where A is a cation, B is a metal, and X is a halogen, wherein each of A, B and X may be composed of a plurality of elements, and B includes Sn and Ge.

Abstract: A feature conversion learning device is configured to acquire a first image, reduce the first image to a second image having lower resolution than the first image, enlarge the second image to a third image having the same resolution as the first image, extract a first feature that is a feature of the first image and a second feature, convert the second feature into a third feature, and learn a feature conversion method based on a result of comparing the first feature with the third feature.

Abstract: The aim is to provide a novel compound that can luminesce with high brightness and be used as a luminescent substrate in a firefly bioluminescence system. Provided is a heterocyclic compound, or salt thereof, represented by the following general formula (1): [R1, R2, and R3 are independently hydrogen or an alkyl group having a carbon number of 1-4, with provisos that R1 and R2 are optionally bonded to form a ring and that one of R1 and R2 is optionally bonded to Y1 to form a ring; X is S, O, NR4, or CH2, and Y1 and Y2 are independently N or CR4, where each R4 is independently hydrogen, an alkyl group having a carbon number of 1-4, an alkenyl group having a carbon number of 2-4, or an acyl group having a carbon number of 2-4; n is an integer of 0-4].

Abstract: The aim is to provide a novel compound that can luminesce with high brightness and be used as a luminescent substrate in a firefly bioluminescence system. Provided is a heterocyclic compound, or salt thereof, represented by the following general formula (1): [R1, R2, and R3 are independently hydrogen or an alkyl group having a carbon number of 1-4, with provisos that R1 and R2 are optionally bonded to form a ring and that one of R1 and R2 is optionally bonded to Y1 to form a ring; X is S, O, NR4, or CH2, and Y1 and Y2 are independently N or CR4, where each R4 is independently hydrogen, an alkyl group having a carbon number of 1-4, an alkenyl group having a carbon number of 2-4, or an acyl group having a carbon number of 2-4; n is an integer of 0-4].

Abstract: An information processing device includes a first time-frequency converter configured to perform a time-frequency conversion with respect to an input signal, using a window function having a first width, a second time-frequency converter configured to perform a time-frequency conversion with respect to the input signal, using a second window function having a second width smaller than the first width, and a modification processing unit configured to modify an output of the second time-frequency converter, using a frequency analysis result based on an output of the first time-frequency converter.

Abstract: A middle ear sound transmission characteristics evaluation system includes a probe; a measuring probe that includes an actuator that vibrates the probe and a force sensor that outputs a voltage in accordance with a reaction force exerted to the actuator when a tip of the probe is brought into contact with ossicles; an electrode that is installed on or near a round window and detects a potential value of a cochlear microphonic when vibration is applied to the ossicles by the probe; a database that stores a sensor voltage value output by the force sensor before surgical treatment, the potential value detected by the electrode, and surgical details; and a surgical details proposing unit that proposes selected surgical details on the basis of the magnitude of at least one of the sensor voltage value and the potential value measured before surgery with reference to the database.

Abstract: A mixing device of a first signal and a second signal on a time-frequency plane, includes a control signal generation unit to generate a control signal indicating whether to perform prioritized mixing that includes amplification of the first signal and attenuation of the second signal; and a gain derivation unit to derive a first gain for amplifying the first signal and a second gain for attenuating the second signal based on the control signal. The control signal takes at least a first value and a second value different from the first value, wherein the first value is not continuous beyond a predetermined bandwidth on a frequency axis. The mixing device applies the prioritized mixing to the first and second signals when the control signal indicates the first value, and applies simple addition to the first and second signals when the control signal indicates the second value.

Abstract: [Problem] To propose a stainless steel structure excellent in hydrogen embrittlement resistance and corrosion resistance, being high in mass productivity, simple in device structure, low in equipment cost, and having a high cost advantage, and a method for manufacturing the same. [Solving means] It is stainless steel having hydrogen embrittlement resistance and corrosion resistance, a surface of electrolytically polished stainless steel being coated with a film obtained by passivating a metal oxide formed by a wet process, wherein the film thickness of the film obtained by passivating the metal oxide formed by a wet process is greater than 100 nm. A hydrogen permeability ratio (film-formed product/film-unformed product) is equal to or less than 2.0×10?2, and a relative reduction of area (under a hydrogen atmosphere of 110 MPa/under a nitrogen atmosphere of 10 MPa) in an SSRT test is equal to or greater than 0.8.

Abstract: A mixing apparatus having a stereo output includes: a first signal processor that mixes a first signal and a second signal in a first channel; a second signal processor that mixes a third signal and a fourth signal in a second channel; a third channel that processes a weighted sum of a signal of the first channel and a signal of the second channel; and a gain deriving part that generates a gain mask commonly used in the first channel and the second channel, wherein the gain deriving part determines a first gain commonly applied to the first signal and the third signal, and a second gain commonly applied to the second signal and the fourth signal, so that predetermined conditions for simultaneous gain generation are satisfied at least at the first channel and the second channel among the first channel, the second channel, and the third channel.

Abstract: A method of the present disclosure for producing methylammonium lead halide perovskite quantum dots includes providing a Pb-oleic acid solution containing a Pb source that is soluble in oleic acid, oleic acid, and a non-polar solvent, providing a methylammonium-oleic acid solution containing methylammonium acetate and oleic acid, providing a reaction solution of tetrabutylammonium halide and oleylamine, and mixing the Pb-oleic acid solution, the methylammonium-oleic acid solution, and the reaction solution.

Abstract: A laser resonator includes a pair of optical elements forming a first optical path having a focused beam waist, one or more mirrors forming a second optical path of approximately parallel light connected to the first optical path, and a laser medium arranged in the second optical path. Induced emission light generated from the laser medium reciprocates or circles in a path formed by the first optical path and the second optical path. A distance between the pair of optical elements is adjustable, and a beam diameter at the second optical path is adjusted by adjusting the distance between the pair of optical elements.

Abstract: A shape measurement method of the present invention includes: a step of irradiating a measurement object with an optical pulse train in which a plurality of optical pulses that have predetermined frequency distributions on a time axis are disposed chronologically in numerical order; and a step of measuring an optical shape of the measurement object in accordance with a correspondent relation between numbers of the optical pulses of a plurality of detection target optical pulse trains after the emitted optical pulse train acts on the measurement object and a correspondent relation between the frequency distributions in the optical pulses.

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: An in vivo motion tracking device tracking an in vivo motion that is a tracking target included in an ultrasonic image includes an image acquiring unit that is configured to acquire an ultrasonic image, an advance learning unit that is configured to perform advance learning using the ultrasonic image as learning data, and a tracking unit that is configured to track a position of the tracking target in an ultrasonic image including the tracking target after the advance learning performed by the advance learning unit.