Abstract: Provided is a personal authentication device based on an auditory brainstem response signal. The personal authentication device includes a signal generator, a signal acquirer, and a signal processor. The signal generator may output an auditory stimulus to an ear of a user, using a sound generator. The signal acquirer may acquire a first reference potential corresponding to a first interval, from a first electrode in close contact with the other ear of the user, and acquire a first evoked potential corresponding to the first interval from a second electrode in close contact with the ear, based on the first reference potential. The signal processor may generate a first auditory brainstem response signal, based on the first reference potential and the first evoked potential, generate authentication data for the user from the first auditory brainstem response signal, and compare the authentication data with registration data to authenticate the user.

Abstract: Disclosed are a gas detection intelligence training system and an operating method thereof. The gas detection intelligence training system includes a mixing gas measuring device that collects an environmental gas from a surrounding environment, generates a mixing gas based on the collected environmental gas and a target gas, senses the mixing gas by using a first sensor array and a second sensor array under a first sensing condition and a second sensing condition, respectively, and generates measurement data based on the sensed results of the first sensor array and the second sensor array, and a detection intelligence training device including a processor that generates an ensemble prediction model based on the measurement data.

Abstract: Provided is a multi-port gas flow rate control apparatus. The multi-port gas flow rate control apparatus includes a gas supply chamber configured to supply a measurement gas input through one gas inflow channel while allowing the measurement gas to diverge into a plurality of flows, a plurality of gas divergence flow channels each having one side connected to the gas supply chamber and configured to transfer the measurement gas flowing through the gas supply chamber to a plurality of gas sensors, respectively, and a gas measurement chamber configured to accommodate the plurality of gas sensors, including the plurality of gas divergence flow channels configured to connect to the gas supply chamber to the plurality of gas sensors to transfer a gas outflow diverging through the gas supply chamber to the plurality of accommodated gas sensors, and configured to discharge the gas outflow sensed by the plurality of gas sensors.

Abstract: Disclosed are a device and a method for anomaly detection of a gas sensor. The device includes a measuring unit that extracts a characteristic of a gas supplied from the outside, generates data based on the extracted characteristic, and outputs the data, and a data processing unit that receives the data, determines whether an error occurs in the data, and outputs an anomaly detection result based on a result of determining whether the error occurs in the data. The measuring unit performs a calibration operation or an environment adjusting operation before extracting the characteristic, and the data processing unit determines whether the error occurs in the data, based on machine learning.

Abstract: Disclosed are a gas detection intelligence training system and an operating method thereof. The gas detection intelligence training system includes a mixing gas measuring device that collects an environmental gas from a surrounding environment, generates a mixing gas based on the collected environmental gas and a target gas, senses the mixing gas by using a first sensor array and a second sensor array under a first sensing condition and a second sensing condition, respectively, and generates measurement data based on the sensed results of the first sensor array and the second sensor array, and a detection intelligence training device including a processor that generates an ensemble prediction model based on the measurement data.

Abstract: Disclosed is an electronic device. The electronic device includes an impedance measuring unit including electrodes, that applies a first measurement signal of a first frequency to a user, obtains first biometric impedance data, based on first electrodes among the electrodes, and obtains second biometric impedance data, based on second electrodes among the electrodes, and a signal processor that extracts first feature data of the user, based on the first biometric impedance data and the second biometric impedance data. The first feature data may be based on a ratio between a value of the first biometric impedance data and a value of the second biometric impedance data.

Abstract: A biometric authentication apparatus is provided. The biometric authentication apparatus includes one or more converters that convert a transmit signal of an electrical signal into a vibration signal of a mechanical signal and transmit the vibration signal vibrating within a set frequency range to a user, one or more sensor that receive a biometric signal corresponding to the vibration signal from the user and convert the biometric signal into a receive signal of an electrical signal, an authentication module that extracts anatomical feature information of the user from the receive signal and determines whether the user is a registered user based on the anatomical feature information, and a memory that stores a database for the registered user. The biometric signal is a frequency-based signal modified to include the anatomical feature information while the vibration signal passes through at least a portion of the body of the user.

Abstract: Disclosed is an electronic device. The electronic device includes an impedance measuring unit including electrodes, that applies a first measurement signal of a first frequency to a user, obtains first biometric impedance data, based on first electrodes among the electrodes, and obtains second biometric impedance data, based on second electrodes among the electrodes, and a signal processor that extracts first feature data of the user, based on the first biometric impedance data and the second biometric impedance data. The first feature data may be based on a ratio between a value of the first biometric impedance data and a value of the second biometric impedance data.

Abstract: Provided is a personal authentication device based on an auditory brainstem response signal. The personal authentication device includes a signal generator, a signal acquirer, and a signal processor. The signal generator may output an auditory stimulus to an ear of a user, using a sound generator. The signal acquirer may acquire a first reference potential corresponding to a first interval, from a first electrode in close contact with the other ear of the user, and acquire a first evoked potential corresponding to the first interval from a second electrode in close contact with the ear, based on the first reference potential. The signal processor may generate a first auditory brainstem response signal, based on the first reference potential and the first evoked potential, generate authentication data for the user from the first auditory brainstem response signal, and compare the authentication data with registration data to authenticate the user.

Abstract: Provided is a centrifugal device. The centrifugal device includes a centrifugal part configured to provide an intermediate chamber into which a centrifugal object is put and a driving part disposed on a rotation axis passing through the intermediate chamber.

Abstract: Provided is a biometric authentication system for authenticating a user. The biometric authentication system includes an input function generator generating an input function for determining a first time interval in a transmission interval in which an input signal is transmitted to a user, a second time interval in the transmission interval, a first frequency of the first time interval, and a second frequency of the second time interval, an input signal generator transmitting the input signal having the first frequency during the first time interval and the second frequency during the second time interval, to the user, based on the input function, and an authenticator acquiring a biometric signal generated in response to the input signal from the user and determining whether the user is authenticated based on the biometric signal.

Abstract: Provided is a method of forming a thin film having a target thickness T on a substrate by an atomic layer deposition (ALD) method. The method includes n processing conditions each having a film growth rate that is different from the others, and determining a1 to an that are cycles of a first processing condition to an n-th processing condition so that a value of |T?(a1×G1+a2×G2+ . . . +an×Gn)| is less than a minimum value among G1, G2, . . . , and Gn, where n is 2 or greater integer, G1, . . . , and Gn respectively denote a first film growth rate that is a film growth rate of the first processing condition, . . . and an n-th film growth rate that is a film growth rate of the n-th processing condition, and the film growth rate denotes a thickness of a film formed per a unit cycle in each of the processing conditions. The film forming method may precisely and uniformly control a thickness of the thin film when an ALD is performed.

Abstract: Disclosed is a method of depositing a thin film, which includes supplying a purge gas and a source gas into a plurality of reactors for a first period, stopping supplying of the source gas, and supplying the purge gas and a reaction gas into the plurality of reactors for a second period, and supplying the reaction gas and plasma into the plurality of reactors for a third period.

Abstract: A method of depositing a thin film includes: supplying a first source gas to a reactor during a first time period; supplying a purge gas to the reactor during a second time period; supplying a second source gas to the reactor during a third time period; and supplying the purge gas to the reactor during a fourth time period, wherein the first source gas and the second source gas comprise polymer precursors, and wherein the first source gas and the second source gas are supplied at a temperature that is less than 100° C. or about 100° C. According to the method, uniformity and step coverage of a thin film can be improved by depositing an amorphous carbon layer using polymer precursors according to an Atomic layer deposition (ALD) method.

Abstract: Provided is a method of forming a thin film having a target thickness T on a substrate by an atomic layer deposition (ALD) method. The method includes n processing conditions each having a film growth rate that is different from the others, and determining a1 to an that are cycles of a first processing condition to an n-th processing condition so that a value of |T?(a1×G1+a2×G2+ . . . +an×Gn)| is less than a minimum value among G1, G2, . . . , and Gn, where n is 2 or greater integer, G1, . . . , and Gn respectively denote a first film growth rate that is a film growth rate of the first processing condition, . . . and an n-th film growth rate that is a film growth rate of the n-th processing condition, and the film growth rate denotes a thickness of a film formed per a unit cycle in each of the processing conditions. The film forming method may precisely and uniformly control a thickness of the thin film when an ALD is performed.

Abstract: An X-ray distribution adjusting filter, and a CT apparatus and method thereof are provided, in which the X-ray distribution adjusting filter has a hollow inner part, and when rotating, a shape thereof is changed according to rotation angles, such that intensity distribution of X-rays radiating toward a subject may be adjusted.

Abstract: A method of depositing a thin film includes: supplying a first source gas to a reactor during a first time period; supplying a purge gas to the reactor during a second time period; supplying a second source gas to the reactor during a third time period; and supplying the purge gas to the reactor during a fourth time period, wherein the first source gas and the second source gas comprise polymer precursors, and wherein the first source gas and the second source gas are supplied at a temperature that is less than 100° C. or about 100° C. According to the method, uniformity and step coverage of a thin film can be improved by depositing an amorphous carbon layer using polymer precursors according to an Atomic layer deposition (ALD) method.

Abstract: Disclosed is a method of depositing a thin film, which includes supplying a purge gas and a source gas into a plurality of reactors for a first period, stopping supplying of the source gas, and supplying the purge gas and a reaction gas into the plurality of reactors for a second period, and supplying the reaction gas and plasma into the plurality of reactors for a third period.

Abstract: Provided is an apparatus for scanning excitation light for a photoacoustic image including a laser delivery device including a rotation reflector configured to receive an excitation laser beam emitted from a laser beam generator, reflect the received excitation laser beam at a certain angle, and radially deliver the reflected excitation laser beam through rotation; a plurality of optical connection lenses disposed on a circumference having a predetermined radius from the rotation reflector and configured to sequentially receive the excitation laser beam while the rotation reflector rotates; and a plurality of optical fiber strands connected with the plurality of optical connection lenses and configured to guide laser light received by the optical connection lenses to a photoacoustic probe.

Abstract: Provided is a miniaturized photo-acoustic probe for a clinical image capable of effectively measuring a photo-acoustic signal by making an ultrasonic axis and an optical axis parallel. The photo-acoustic probe for a clinical image includes a laser generator configured to generate a laser beam, an ultrasound transducer disposed to be parallel to the laser generator and configured to analyze ultrasound output from an object, first and second reflectors configured to receive ultrasound generated in an axis identical to that of the laser beam generated by the laser generator, and a medium material configured to allow the laser to be transmitted from the first reflector to the object and increase ultrasound reflectivity of the first and the second reflector.