Abstract: The present invention relates to a power plant early warning device and method which employ a multiple prediction model, and includes: a plurality of prediction models which receive information about the operation states of equipment in a power plant, and output prediction values and the reliabilities of the prediction values; a reliability analysis module which quantizes and analyzes the reliabilities output from the plurality of prediction models to determine the ranks of the plurality of prediction models, and calculates a final prediction value; a comparison module which compares the final prediction value with an actual measurement value, and outputs a residual; and a determination module which analyzes the residual to determine whether there are defects in the operating states of the equipment in the power plant.

Abstract: A user terminal device and a controlling method thereof are provided. The user terminal device includes a display configured to be divided into a first area and a second area which is larger than the first area with reference to a folding line, a cover disposed on a rear side of the display, a detector configured to detect a user interaction on the display and the cover, and a controller configured to, in response to the display being folded along the folding line such that the first area and the second area face each other, control the detector to detect a user interaction through an exposure area, which is an exposed part of the second area, and the cover, and, in response to the display being folded such that the two parts of the cover face with each other with reference to the folding line, control the detector to detect a user interaction through the first area and the second area.

Abstract: A user terminal device and a controlling method thereof are provided. The user terminal device includes a display configured to be divided into a first area and a second area which is larger than the first area with reference to a folding line, a cover disposed on a rear side of the display, a detector configured to detect a user interaction on the display and the cover, and a controller configured to, in response to the display being folded along the folding line such that the first area and the second area face each other, control the detector to detect a user interaction through an exposure area, which is an exposed part of the second area, and the cover, and, in response to the display being folded such that the two parts of the cover face with each other with reference to the folding line, control the detector to detect a user interaction through the first area and the second area.

Abstract: A user terminal device and a controlling method thereof are provided. The user terminal device includes a display configured to be divided into a first area and a second area which is larger than the first area with reference to a folding line, a cover disposed on a rear side of the display, a detector configured to detect a user interaction on the display and the cover, and a controller configured to, in response to the display being folded along the folding line such that the first area and the second area face each other, control the detector to detect a user interaction through an exposure area, which is an exposed part of the second area, and the cover, and, in response to the display being folded such that the two parts of the cover face with each other with reference to the folding line, control the detector to detect a user interaction through the first area and the second area.

Abstract: The present invention relates to a device for tracking the basis of an abnormal state determination by using a neural network model, comprising: an abnormality type classification unit for classifying an abnormal state into a plurality of failures in an abnormal operation scenario in which a plurality of scenarios related to the abnormal state are stored; an operation variable deriving unit for deriving operation variables affecting an abnormal state determination result for each of the plurality of classified failures; a power plant operation variable weighting unit for weighting the variable related to the abnormal state from among the operation variables; and an abnormal state determination basis generation unit for tracking the basis of an abnormal state determination from the abnormal state determination result generated through the weighted power plant operation variable.

Abstract: An optical scanner includes a mirror configured to reflect an incident light and a vertically-shifting electrostatic actuator configured to oscillate the mirror. The electrostatic actuator includes a frame having an installation space in a central portion and a drive electrode, a stationary electrode, a shifter, and a force application part installed in the installation space. Drive electrode fingers in the drive electrode and stationary electrode fingers in the stationary electrode are alternately disposed. The shifter may be connected either between the frame and the drive electrode or between the frame and the stationary electrode and vertically shifts either the drive electrode or the stationary electrode connected to the shifter when a vertical force is applied through the force application part.

Abstract: A method and a system for monitoring a state of a nuclear power plant capable of reducing a state prediction error of a sensor during startup, full power, shut down operation of a nuclear power plant, and of providing an early warning, without an error alarm includes remotely and automatically diagnosing the state of a sensor, device, system and power plant. The method and comprises: a first layer that compares a sensor measurement value and a device measurement value with predicted values so as to detect anomalies of the sensor and the device; a second layer that classifies a type of the sensor and diagnoses the presence or absence of an anomaly of the sensor on the basis of an anomaly value of the sensor provided from the first layer.

Abstract: The present invention relates to a power plant early warning device and method which employ a multiple prediction model, and includes: a plurality of prediction models which receive information about the operation states of equipment in a power plant, and output prediction values and the reliabilities of the prediction values; a reliability analysis module which quantizes and analyzes the reliabilities output from the plurality of prediction models to determine the ranks of the plurality of prediction models, and calculates a final prediction value; a comparison module which compares the final prediction value with an actual measurement value, and outputs a residual; and a determination module which analyzes the residual to determine whether there are defects in the operating states of the equipment in the power plant.

Abstract: The present invention relates to an abnormal driving state determination device using a neural network model, and the device can comprise: an abnormal driving state data generation unit for generating abnormal driving state data on the basis of information related to an abnormal driving state; an abnormal driving state learning unit which receives the abnormal driving state data so as to visualize the abnormal driving state data through a visualization algorithm, thereby allowing the abnormal driving state data to be learned by a neural network model; and an abnormal driving state determination unit including the neural network model for determining an abnormal state on the basis of the learned abnormal driving state data.

Abstract: A vertically-shifting electrostatic actuator and an optical scanner employing the electrostatic actuator are disclosed. The optical scanner includes a mirror configured to reflect an incident light and an electrostatic actuator configured to oscillate the mirror. The electrostatic actuator includes a frame having an installation space in a central portion and a drive electrode, a stationary electrode, a shifter, and a force application part installed in the installation space. Drive electrode fingers in the drive electrode and stationary electrode fingers in the stationary electrode are alternately disposed. The shifter may be connected either between the frame and the drive electrode or between the frame and the stationary electrode and vertically shifts either the drive electrode or the stationary electrode connected to the shifter when a vertical force is applied through the force application part.

Abstract: The embodiments of the present invention provides a diameter controlling system of the single crystal ingot for controlling a diameter deviation of a silicon ingot during the growth of silicon ingot by a Czochralski method, it may include a seed chuck for supporting a silicon ingot combined with a seed crystal and grown; a measuring part connected to an upper surface of the seed chuck with a cable and configured to measure a load applied to the seed chuck; a load adjusting part for moving a position of the seed chuck vertically while the seed chuck is connected to the cable to change a load applied to the silicon ingot; and a controlling part for controlling the load applied to the silicon ingot by driving the load adjusting part according to the load value measured from the measuring part. Therefore, shaking of the seed during the growth process of the single crystal ingot is prevented, and thus the diameter deviation of the growing single crystal ingot may be reduced.

Abstract: An object of the present invention is to provide a cooling water storage reservoir capable of passive cooling a reactor containment building in order to prevent the reactor containment building from being re-pressurized and reheated in the event of a serious accident. The cooling water storage reservoir comprises: a storage tank forming a first storage space in which cooling water is stored; a compartment tank disposed inside the storage tank and forming a second storage space separated from the first storage space; and an inlet which is provided in the compartment tank and allows the cooling water in the first storage space to naturally flow into the second storage space when the water level in the second storage space decreases.

Abstract: The embodiments of the present invention provides a diameter controlling system of the single crystal ingot for controlling a diameter deviation of a silicon ingot during the growth of silicon ingot by a Czochralski method, it may include a seed chuck for supporting a silicon ingot combined with a seed crystal and grown; a measuring part connected to an upper surface of the seed chuck with a cable and configured to measure a load applied to the seed chuck; a load adjusting part for moving a position of the seed chuck vertically while the seed chuck is connected to the cable to change a load applied to the silicon ingot; and a controlling part for controlling the load applied to the silicon ingot by driving the load adjusting part according to the load value measured from the measuring part. Therefore, shaking of the seed during the growth process of the single crystal ingot is prevented, and thus the diameter deviation of the growing single crystal ingot may be reduced.

Abstract: There is provided a light emitting device, which comprises compound semiconductor layers including a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer; a metal reflection layer formed on a region of the second conductive semiconductor layer; an insulating structure formed at least in a boundary region of the second conductive semiconductor layer; a metal material structure formed to cover the second conductive semiconductor layer having the metal reflection layer and the insulating structure formed; and a substrate bonded to the metal material structure, wherein the boundary region of the second conductive semiconductor layer includes an outer region of the second conductive semiconductor layer along an outer circumference of the second conductive semiconductor layer.

Abstract: There is provided a light emitting device, which comprises compound semiconductor layers including a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer; a metal reflection layer formed on a region of the second conductive semiconductor layer; an insulating structure formed at least in a boundary region of the second conductive semiconductor layer; a metal material structure formed to cover the second conductive semiconductor layer having the metal reflection layer and the insulating structure formed; and a substrate bonded to the metal material structure, wherein the boundary region of the second conductive semiconductor layer includes an outer region of the second conductive semiconductor layer along an outer circumference of the second conductive semiconductor layer.

Abstract: There is provided a light emitting device, which comprises compound semiconductor layers including a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer; a metal reflection layer formed on a region of the second conductive semiconductor layer; an insulating structure formed at least in a boundary region of the second conductive semiconductor layer; a metal material structure formed to cover the second conductive semiconductor layer having the metal reflection layer and the insulating structure formed; and a substrate bonded to the metal material structure, wherein the boundary region of the second conductive semiconductor layer includes an outer region of the second conductive semiconductor layer along an outer circumference of the second conductive semiconductor layer.

Abstract: There is provided a light emitting device, which comprises compound semiconductor layers including a first conductive semiconductor layer, an active layer and a second conductive semiconductor layer; a metal reflection layer formed on a region of the second conductive semiconductor layer; an insulating structure formed at least in a boundary region of the second conductive semiconductor layer; a metal material structure formed to cover the second conductive semiconductor layer having the metal reflection layer and the insulating structure formed; and a substrate bonded to the metal material structure, wherein the boundary region of the second conductive semiconductor layer includes an outer region of the second conductive semiconductor layer along an outer circumference of the second conductive semiconductor layer.