Abstract: A wind tunnel test equipment using wind force integration includes: a structural model whose interior is empty; an internal support disposed inside the structural model; and load sensors disposed outside the internal support and coming into close contact with the inner surfaces of the structural model to measure aerodynamic forces applied to the structural model.

Abstract: A variable assembly PC member includes: a plurality of hollow PC modules, each of which has an upper flange and a lower flange spaced apart from each other, and a pair of webs connecting both ends of the upper flange and the lower flange to form a hollow therein; and connectors connecting the plurality of hollow PC modules with each other in the width direction.

Abstract: The present invention relates to a method for calculating a time history wind load in accordance with correlation, the method in which an artificial time history load close to reality can be generated without relying on a wind tunnel test, by applying the correlation between wind loads in two directions and adjusting the ratio of a maximum value of any one wind load relative to a maximum value of the other wind load.

Abstract: A self-supported PC column joint part. A plurality of accommodation pieces is buried in the upper surface of a lower member to which a PC column is to be joined, has accommodation spaces having open upper parts, and has female threads. A support bar is provided in a pocket formed in the lower end of the PC column, and includes a body coupled to the upper surface of the pocket to protrude and a head at the lower end of the body so as to be accommodated inside the accommodation space. A fixing piece has a through-hole formed in the center thereof such that the body of the support bar passes therethrough, and has threads formed on the outer peripheral surface thereof so as to be screw-coupled to the accommodation piece, thereby fixing the head of the support bar.

Abstract: A wind tunnel test equipment using wind force integration includes: a structural model whose interior is empty; an internal support disposed inside the structural model; and load sensors disposed outside the internal support and coming into close contact with the inner surfaces of the structural model to measure aerodynamic forces applied to the structural model.

Abstract: The present invention relates to a method and system for automatically calculating an artificial intelligence (AI)-based design wind speed, which capable of economically designing a structure by quickly and accurately calculating the design wind speed at a target point through relationship learning between the design target point and a neighboring weather observation station by AI.

Abstract: A self-supported PC column joint part. A plurality of accommodation pieces is buried in the upper surface of a lower member to which a PC column is to be joined, has accommodation spaces having open upper parts, and has female threads. A support bar is provided in a pocket formed in the lower end of the PC column, and includes a body coupled to the upper surface of the pocket to protrude and a head at the lower end of the body so as to be accommodated inside the accommodation space. A fixing piece has a through-hole formed in the center thereof such that the body of the support bar passes therethrough, and has threads formed on the outer peripheral surface thereof so as to be screw-coupled to the accommodation piece, thereby fixing the head of the support bar.

Abstract: A system for monitoring tension forces of tendons disposed inside a concrete structure in post-tensioning includes a hydraulic jack coupled to one tendon at one end of the concrete structure to apply the tension force to the tendon by means of the forward movement of a piston; a hydraulic pump connected to the hydraulic jack by means of a hydraulic pressure supply pipe to supply a hydraulic pressure to the hydraulic jack; a digital elongation length measurement sensor disposed on the hydraulic jack to measure the elongation length of the piston; a measurement unit having a data logger adapted to receive and store the elongation length data measured by the digital elongation length measurement sensor and to send the elongation length data to a main server; a digital pressure measurement sensor disposed on the hydraulic pressure supply pipe of the hydraulic pump; and a control module adapted to receive the elongation length data from the data logger or the main server, calculate the tension force, compensate fo

Abstract: An external communication device, display device, display system, and control method therefor are disclosed. In accordance with an aspect of the present disclosure, an external communication device includes a wired communication module connected to a display device and configured to receive standby power; a wireless communication module configured to transmit a power application signal in response to reception of an event signal from at least one Internet of Things (IoT) apparatus via a wireless communication network according to whether the display device is active; and a communication controller configured to control an operation of the at least one IoT apparatus on the basis of a control command received via the wired communication module.

Abstract: A method for processing a content by a set-top box according to an embodiment of the present disclosure comprises the steps of: receiving a content including an audio stream; and performing bypassing to output the audio stream to a television (TV) through an output interface without performing a decoding operation for the audio stream, wherein the audio stream includes metadata regarding the content.

Abstract: In a load weighing method for a wheel loader, an inclined angle of a ground surface on a slope where the wheel loader is working is detected. A change in a boom angle and a change in a pressure of a boom cylinder are detected while pivoting the boom and an attachment connected to the boom when a load is placed on the attachment. Weight of the load is calculated using the inclined angle of the ground surface, the change in the boom angle, and the change in the pressure of the boom cylinder as variables of a rotational dynamic equation for the pivot of the boom.

Abstract: A method for processing a content by a set-top box according to an embodiment of the present disclosure comprises the steps of: receiving a content including an audio stream; and performing bypassing to output the audio stream to a television (TV) through an output interface without performing a decoding operation for the audio stream, wherein the audio stream includes metadata regarding the content.

Abstract: A wireless receiving apparatus includes a plurality of wireless receiving modules that receive a plurality of sub-streams constituting a video frame from a wireless transmitting apparatus and a data processing module that determine whether an error occurs in each of the plurality of sub-streams, in response to determining that an error does not occur in any of the plurality of sub-streams, merges the plurality of sub-streams to generate the video frame, transmits the video frame to a display electrically connected to the wireless receiving apparatus, and in response to determining that an error occurs in at least one of the plurality of sub-streams, transmits an immediately-preceding video frame to the display.

Abstract: A method for processing a content by a set-top box according to an embodiment of the present disclosure comprises the steps of: receiving a content including an audio stream; and performing bypassing to output the audio stream to a television (TV) through an output interface without performing a decoding operation for the audio stream, wherein the audio stream includes metadata regarding the content.

Abstract: A system for monitoring tension forces of tendons disposed inside a concrete structure in post-tensioning includes a hydraulic jack coupled to one tendon at one end of the concrete structure to apply the tension force to the tendon by means of the forward movement of a piston; a hydraulic pump connected to the hydraulic jack by means of a hydraulic pressure supply pipe to supply a hydraulic pressure to the hydraulic jack; a digital elongation length measurement sensor disposed on the hydraulic jack to measure the elongation length of the piston; a measurement unit having a data logger adapted to receive and store the elongation length data measured by the digital elongation length measurement sensor and to send the elongation length data to a main server; a digital pressure measurement sensor disposed on the hydraulic pressure supply pipe of the hydraulic pump; and a control module adapted to receive the elongation length data from the data logger or the main server, calculate the tension force, compensate fo

Abstract: A network system, an access point, and a connection method thereof are provided. The access point includes a communicator configured to communicate with a wireless devices, and a controller configured to control the communicator to acquire authentication information based on a Uniform Resource Locator (URL) that is received from the wireless device, and to perform connection with an electronic device based on the acquired authentication information.

Abstract: An external communication device, display device, display system, and control method therefor are disclosed. In accordance with an aspect of the present disclosure, an external communication device includes a wired communication module connected to a display device and configured to receive standby power; a wireless communication module configured to transmit a power application signal in response to reception of an event signal from at least one Internet of Things (IoT) apparatus via a wireless communication network according to whether the display device is active; and a communication controller configured to control an operation of the at least one IoT apparatus on the basis of a control command received via the wired communication module.

Abstract: A system for monitoring tension forces of tendons in post-tensioning includes a hydraulic jack to apply the tension force to the tendon, a hydraulic pump to supply a hydraulic pressure to the hydraulic jack, a digital elongation length measurement sensor to measure the elongation length of the piston, a measurement unit having a data logger adapted to receive and store the elongation length data measured by the digital elongation length measurement sensor and to send the elongation length data to a main server, a digital pressure measurement sensor, and a control module adapted to receive the elongation length data from the data logger or the main server, calculate the tension force, compensate for the coefficient of elasticity of the tendon according to the ratio of the real-time elongation length data to the pressure data, and compensate for the tension force calculated.

Abstract: A wireless receiving apparatus includes a plurality of wireless receiving modules that receive a plurality of sub-streams constituting a video frame from a wireless transmitting apparatus and a data processing module that determine whether an error occurs in each of the plurality of sub-streams, in response to determining that an error does not occur in any of the plurality of sub-streams, merges the plurality of sub-streams to generate the video frame, transmits the video frame to a display electrically connected to the wireless receiving apparatus, and in response to determining that an error occurs in at least one of the plurality of sub-streams, transmits an immediately-preceding video frame to the display.

Abstract: An apparatus and a method for wirelessly transmitting video frames are provided. A wireless transmitting apparatus may include a processor that generates a plurality of sub-streams based on a video frame, and a plurality of wireless transmitters that transmit the plurality of sub-streams to a wireless receiving apparatus. The processor is further configured to receive channel state information from the plurality of wireless transmitters and to determine at least one of a number of the plurality of sub-streams and an amount of data of the video frame to be included in each sub-stream of the plurality of sub-streams, based on the channel state information.