Abstract: The present invention provides a method of determining rarity of a signal. The method of determining rarity of a signal includes receiving group biometric information data for a certain period through a sensor, extracting, by an extraction processor, partial data in the received group biometric information data, calculating, by a comparison processor, a cumulative distribution function (CDF) based on the group biometric information data, calculating, by the comparison processor, a sample rarity score of the extracted partial data based on the calculated CDF, and calculating a group rarity score from the sample rarity score, and comparing, by the comparison processor, the group rarity score of the extracted partial data with a threshold value to determine whether a singularity is present.

Abstract: The present disclosure provides a basal ganglia-on-a-chip for screening therapeutic agents for brain and nervous system diseases and a method for fabricating the same. The present invention provides a method for screening therapeutic agents for dopamine-dependent brain and nervous system diseases by using a basal ganglia-on-a-chip. When the basal ganglia-on-a-chip of the present invention is used in the effect evaluation of therapeutic agents for brain and nervous system diseases, the effect evaluation of therapeutic candidate substances can be economically and promptly carried out compared with an existing technique.

Abstract: The present invention relates to a mini-brain structure and a construction method therefor and, more specifically, to a mini-brain and a construction method therefor, wherein induced pluripotent stem cells can be used to prepare brain organoids for different brain regions accounting for the cerebrum, the mesencephalon, the cerebellum, the thalamus, and the like and the organoids are combined into single structures, thereby making it possible to further effectively implement actual brain functions and wherein brain organoids for different brain regions can be selectively combined into single structures according to purposes, thereby achieving the aim of using brain organoids and enhancing convenience and economical benefit.

Abstract: A bioelectronic device for regulating stem cell differentiation, a method for differentiating stem cells using the same, and a method for manufacturing the bioelectronic device. According to the present invention, it is possible to effectively control the differentiation of stem cells at a single-cell level, and to simultaneously perform a free radical inhibition function.

Abstract: Disclosed is logic device using spin orbit torque. Two magnetic tunnel junctions have mutually opposite magnetization directions. The direction of the current flowing through the non-magnetic metal layer acts as an input, and the resistance states of the magnetic tunnel junctions are determined by the input program currents. Various logic devices are implemented by a method of setting the input program current to a logic high or a logic low.

Abstract: The present invention relates to a mouthpiece for teeth whitening. Particularly, it relates to a mouthpiece for teeth whitening to alleviate dilution of a tooth whitening gel by saliva and to improve breathing of a user. The first aspect of the invention relates to a mouthpiece for teeth whitening comprises a body and a tongue rest, and the body further comprises an outer surface, an inner surface and an air vent penetrating the outer surface and the inner surface. The air vent has an inner side opening formed at a portion extending toward the user's oral cavity by a predetermined length from the inner surface, and an extended portion of the air vent toward the user's oral cavity is connected to the tongue rest.

Abstract: Disclosed are a method and a device for measuring a biometric signal by using a radar. The disclosed method measures a plurality of biometric signals by using a radar by: (a) receiving the plurality of biometric signals from the radar; (b) calculating distance information of the received plurality of biometric signals and classifying the same on the basis of a distance; (c) selecting a signal having a largest variance according to a time; (d) further selecting a number of signals among signals having a distance with the signal selected in the step (c) smaller than an arbitrary distance from the distance-based classified signals; (e) converting all signals selected from a time domain to a frequency domain; (f) calculating a reliability of each biometric signal from the converted distance-based signals; and (g) detecting a corresponding biometric signal by selecting the distance-based signal where the calculated reliability is highest.

Abstract: A gesture recognition device and method using radar are proposed. The gesture recognition device includes: a signal receiving unit for receiving a radar signal reflected by a gesture of a user; a clutter removing unit for removing clutter from the signal received by the signal receiving unit; and a signal magnitude variance acquiring unit for acquiring the variance of a signal magnitude from a reflection signal from which the clutter has been removed. The proposed device and method have an advantage of enabling a gesture to be recognized with performance that is robust to changes in distance and direction between a user and a radar sensor.

Abstract: Disclosed is a moving object detection system and method. The moving object detection system includes an input unit receiving the sensed signals from two or more radar devices, a distance information computation unit computing distance information of the objects from the received signals, a grouping unit randomly selecting one signal to generate multiple signal groups, and generating the signal groups selected among the generated multiple signal groups as one signal group combination, a calculation unit calculating cross-correlation values for all the signal groups in the same signal group combination and adding up the calculated cross-correlation values, a combination selection unit selecting the signal group combination in which a sum of the cross-correlation values is a maximum, and a position computation unit computing a position of each object by matching the signal groups in the selected signal group combination to the objects.

Abstract: Disclosed is a method and a device for measuring sleep efficiency by using a radar, the device including: a height recognition unit recognizing a height of a measurement target person by using a signal received from the radar; a movement section extraction unit extracting a movement section of the person during sleep from the received signal, and calculating a length of the extracted movement section and an amount of movement; a normalization unit normalizing the amount of the movement by applying, to the calculated amount of the movement, a ratio between the height of the person and the length of the movement section; a sleep/wakefulness state determination unit determining whether the person is in a wakefulness state or a sleep state; and a sleep efficiency calculation unit calculating the sleep efficiency.

Abstract: Disclosed are a method and device for measuring a headcount by using a peak value distribution pattern of a radar reception signal according to the headcount. The method for counting people by using a UWB radar disclosed herein comprises: a step of computing, for each predetermined headcount, an amplitude probability density function based on the distance between a reflection point and a radar, by using a sample radar reception signal for the headcount; a step of calculating likelihood values with respect to the headcounts from a measured radio reception signal by using the probability density function; and a step of determining a headcount corresponding to the largest likelihood value among the calculated likelihood values, as a final headcount with respect to the measured radar reception signal.

Abstract: Disclosed are a method and a device for adaptively configuring a threshold for object detection by means of radar, the device including: a position-specific maximum signal value extraction unit extracting a maximum value of a signal for each position by obtaining the signal when there is no moving object; a position-specific signal magnitude sorting unit obtaining signals caused by a moving object, and sorting magnitudes of the obtained signals for each position in descending order for a time index; a candidate signal index selection unit selecting a candidate signal index; a signal index determination unit setting weighting factors for the respective signals up to the candidate signal index, and determining a sum of the weighting factors as a signal index; and a position-specific threshold configuring unit configuring the threshold for each position by using a signal of the determined signal index and a scaling factor.

Abstract: Nanorod devices for isolating and characterizing target cellular components are provided. Methods of isolating, detecting, and/or characterizing the components are also provided. Methods of use and treatment are further disclosed, such as treating diseases identified using the nanorods and/or using differentiated stem cells identified using the provided nanorods.

Abstract: Disclosed is a method and a device for measuring sleep efficiency by using a radar, the device including: a height recognition unit recognizing a height of a measurement target person by using a signal received from the radar; a movement section extraction unit extracting a movement section of the person during sleep from the received signal, and calculating a length of the extracted movement section and an amount of movement; a normalization unit normalizing the amount of the movement by applying, to the calculated amount of the movement, a ratio between the height of the person and the length of the movement section; a sleep/wakefulness state determination unit determining whether the person is in a wakefulness state or a sleep state; and a sleep efficiency calculation unit calculating the sleep efficiency.

Abstract: The present invention provides a method and a kit for half coating nanoparticles. According to the present invention, nanoparticles can be half coated in a relatively simple and economical process that can replace complicated processes, such as chemical synthesis, of a conventional Janus nanoparticle-preparing method.

Abstract: Disclosed is an apparatus for detecting fall and rise. The apparatus includes a first sensor unit disposed at a first height and configured to sense a movement of a resident, a second sensor unit disposed at a second height higher than the first height and configured to sense the movement of the resident, and a controller configured to sense a falling behavior and a rising behavior of the resident based on distances from the resident measured by the first sensor unit and the second sensor unit. The controller sets the first sensor unit and the second sensor unit such that, among three axis coordinates of the first sensor unit and the second sensor unit in a 3D orthogonal coordinate system, two axis coordinates thereof coincide with each other.

Abstract: Disclosed are a method and device capable of diagnosing arrhythmia by a contactless method by using a UWB radar. The method for diagnosing arrhythmia using a UWB radar disclosed herein comprises: a step of extracting a radar signal corresponding to a heartbeat component, from radar signals received after being reflected from an examinee; a step of analyzing a frequency component of the radar signal corresponding the heartbeat component; and a step of determining if the examinee has arrhythmia, on the basis of the magnitude of the value of the ratio between the largest peak value and the second largest peak value which are included in the frequency component.

Abstract: A gesture recognition device and method using radar are proposed. The gesture recognition device includes: a signal receiving unit for receiving a radar signal reflected by a gesture of a user; a clutter removing unit for removing clutter from the signal received by the signal receiving unit; and a signal magnitude variance acquiring unit for acquiring the variance of a signal magnitude from a reflection signal from which the clutter has been removed. The proposed device and method have an advantage of enabling a gesture to be recognized with performance that is robust to changes in distance and direction between a user and a radar sensor.

Abstract: The present disclosure provides an emergency determination device. The emergency determination device includes a sensor configured to detect a vital sign of a person and a hand gesture of the person within a predetermined range, and a determiner configured to analyze the vital sign recognized by the sensor, to additionally analyze the hand gesture based on a result obtained by analyzing the vital sign, and to determine whether the emergency occurs, wherein the determiner analyzes the vital sign and determines whether the emergency occurs after the sensor detects a wake-up behavior.

Abstract: Disclosed are a method and device for measuring a headcount by using a peak value distribution pattern of a radar reception signal according to the headcount. The method for counting people by using a UWB radar disclosed herein comprises: a step of computing, for each predetermined headcount, an amplitude probability density function based on the distance between a reflection point and a radar, by using a sample radar reception signal for the headcount; a step of calculating likelihood values with respect to the headcounts from a measured radio reception signal by using the probability density function; and a step of determining a headcount corresponding to the largest likelihood value among the calculated likelihood values, as a final headcount with respect to the measured radar reception signal.