Abstract: Various examples are provided related to virtual performance compatibility checking and management for modular construction. In one example, a method includes segmenting boundaries of as-built and as-planned models of a construction element; determining features of each boundary segment of the as-built and as-planned models; determining similarity ratios for matching pairs of boundary segments of the as-built and as-planned models; comparing a total similarity ratio based upon the similarity ratios for matching pairs of boundary segments with a specified threshold; and snapping the as-built model in position in a point cloud in response to the comparison. A system comprising computing or processing circuitry can execute a program or application to implement the similarity/compatibility checking methodology. The similarity/compatibility checking methodology can be implemented within a construction performance modeling and simulation (CPMS) framework.

Abstract: A wireless optical transceiver, comprising: a light splitter for splitting light emitted from a light source into two lights; a data converter for dividing input data into a plurality of divided data in a symbol unit of a predetermined number of bits, and for converting values of a phase bit and a duty bit at a predetermined position in each of the divided data into a phase control signal and a blocking control signal; a modulator for polarization phase modulating two lights split according to the phase control signal, and for conveying or blocking two modulated polarized lights in response to the blocking control signal to modulate a pulse position; a polarized light combiner for generating a transmission optical signal by combining two polarized lights with a modulated polarization phase and a modulated pulse position; and a light amplifier for amplifying the transmission optical signal and transmitting it through a standby channel.

Abstract: A system initializes a set of calibrated images with known 3D pose relative to a 3D building information model (BIM) to be anchor images, detects features within images of unknown position and orientation, and determines matches with features of the calibrated images. The system determines a subset of the images that have at least a threshold number of matching features, selects an image from the subset of the images having the largest number of matching features, and executes a reconstruction algorithm using the image and the anchor images to calibrate the image to the BIM and generate an initial 3D point cloud model. The system repeats the last steps to identify a second image from the subset and perform, starting with the initial 3D point cloud model and using the second image, 3D reconstruction to generate an updated 3D point cloud model that is displayable in a graphical user interface.

Abstract: A wireless optical transceiver, comprising: a light splitter for splitting light emitted from a light source into two lights; a data converter for dividing input data into a plurality of divided data in a symbol unit of a predetermined number of bits, and for converting values of a phase bit and a duty bit at a predetermined position in each of the divided data into a phase control signal and a blocking control signal; a modulator for polarization phase modulating two lights split according to the phase control signal, and for conveying or blocking two modulated polarized lights in response to the blocking control signal to modulate a pulse position; a polarized light combiner for generating a transmission optical signal by combining two polarized lights with a modulated polarization phase and a modulated pulse position; and a light amplifier for amplifying the transmission optical signal and transmitting it through a standby channel.

Abstract: A multiple variable valve lift apparatus disposed at an intake part and an exhaust part of an engine includes: a moving cam rotating together with a camshaft, being movably disposed in an axial direction of the camshaft, and forming a plurality of cams for realizing valve lift to be different from each other and a cam guide protrusion; an operating unit selectively guiding the cam guide protrusion so as to move the moving cam in an axial direction of the camshaft; a controller controlling an operation of the operating unit; and a valve opening/closing unit opened/closed by contacting any one among the plurality of cams.

Abstract: A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction thereof; a cam groove provided in an internal circumferential surface of the movable cam device to communicate with the shaft groove; and an insertion member inserted into a communication space defined by the shaft groove and the cam groove such that a rotational displacement of the camshaft is transmitted to the movable cam device.

Abstract: A system initializes a set of calibrated images with known 3D pose relative to a 3D building information model (BIM) to be anchor images, detects features within images of unknown position and orientation, and determines matches with features of the calibrated images. The system determines a subset of the images that have at least a threshold number of matching features, selects an image from the subset of the images having the largest number of matching features, and executes a reconstruction algorithm using the image and the anchor images to calibrate the image to the BIM and generate an initial 3D point cloud model. The system repeats the last steps to identify a second image from the subset and perform, starting with the initial 3D point cloud model and using the second image, 3D reconstruction to generate an updated 3D point cloud model that is displayable in a graphical user interface.

Abstract: A multiple variable valve lift apparatus may include a moving cam formed of a hollow cylindrical shape, configured to be moveable in an axial direction of a camshaft while being rotated with the camshaft, and forming a plurality of cams implementing a cam guide protrusion device and different valve lifts from each other; an operation device selectively guiding a cam guide protrusion device to move the moving cam in the axial direction of the camshaft; a controller configured for controlling an operation of the operation device; a valve opening/closing device in contact with any one cam among the plurality of cams; a plurality of stopper grooves formed at an external circumference of the camshaft; and a stopper device provided at the moving cam and inserted to the stopper groove to be rotated at a position after the moving cam is moved.

Abstract: A photodetector is provided, including a plurality of optical signal detection units located at each of multiple pixels and configured to generate electric charges corresponding to light being received, and a switch transistor selectively turned on and off so as to transfer the electric charges generated through the plurality of optical signal detection units at each of the multiple pixels, wherein the plurality of optical signal detection units are connected to each other in series.

Abstract: A control method for a turbocharger system may include controlling opening levels of an intake bypass valve, an exhaust bypass valve, and a throttle valve according to a driving condition of a vehicle by a controller, and executing a series of commands by the controller, including determining whether an engine rpm satisfies a set low/medium speed condition, determining whether an acceleration request condition is satisfied when the engine rpm satisfies the set low/medium speed condition, closing the intake bypass valve, and controlling an opening angle of the exhaust bypass valve according to the acceleration request condition.

Abstract: A variable valve device for an engine, may include a camshaft; a movable cam device fitted over the camshaft to be slidable in an axial direction of the camshaft, and configured such that cams with at least two different cam profiles and a guide protruding portion are disposed along the axial direction of the camshaft; at least one shaft groove linearly processed to have a predetermined cross-sectional shape in an external circumferential surface of the camshaft along the axial direction thereof; a cam groove provided in an internal circumferential surface of the movable cam device to communicate with the shaft groove; and an insertion member inserted into a communication space defined by the shaft groove and the cam groove such that a rotational displacement of the camshaft is transmitted to the movable cam device.

Abstract: A multiple variable valve lift apparatus disposed at an intake part and an exhaust part of an engine includes: a moving cam rotating together with a camshaft, being movably disposed in an axial direction of the camshaft, and forming a plurality of cams for realizing valve lift to be different from each other and a cam guide protrusion; an operating unit selectively guiding the cam guide protrusion so as to move the moving cam in an axial direction of the camshaft; a controller controlling an operation of the operating unit; and a valve opening/closing unit opened/closed by contacting any one among the plurality of cams.

Abstract: A cooling system of an engine may include a cylinder liner formed in a hollow cylindrical shape and pressed against an inside of a cylinder of the engine, a block coolant jacket positioned in an outer side of the cylinder liner in a radial direction to cool a cylinder block, the cylinder block provided with the cylinder liner and the block coolant jacket therein, and a cylinder head engaged on the cylinder block, including an exhaust port and an intake port fluidically-communicated with a combustion chamber and respectively formed at an exhaust side and an intake side, and provided with a head coolant jacket inside, in which the block coolant jacket includes an upper coolant jacket and a lower coolant jacket and a division wall is disposed between the upper coolant jacket and the lower coolant jacket to block fluid flow therebetween.

Abstract: Disclosed are a communication method of dynamically allocating subbands in a time-variant channel and a device therefor. In particular, the communication device using dynamically allocated subbands in a time-variant channel includes a subband allocation mode selection unit that selects any one of subband allocation modes based on a communication requirement; a channel estimation unit that performs channel estimation on a plurality of subbands based on the currently selected subband allocation mode; and a control unit that transmits channel estimation information on the subbands to a subband allocation device and is allocated at least one subband satisfying the communication requirement from the subband allocation device.

Abstract: The present invention relates to an X-ray imaging apparatus that includes a bias voltage source that provides a bias voltage to pixels that detect X-rays and an automatic exposure control (AEC) processing unit that detects a current flowing between the bias voltage source and the pixels and outputs an AEC signal.

Abstract: A multiple variable valve lift apparatus may include a moving cam formed of a hollow cylindrical shape, configured to be moveable in an axial direction of a camshaft while being rotated with the camshaft, and forming a plurality of cams implementing a cam guide protrusion device and different valve lifts from each other; an operation device selectively guiding a cam guide protrusion device to move the moving cam in the axial direction of the camshaft; a controller configured for controlling an operation of the operation device; a valve opening/closing device in contact with any one cam among the plurality of cams; a plurality of stopper grooves formed at an external circumference of the camshaft; and a stopper device provided at the moving cam and inserted to the stopper groove to be rotated at a position after the moving cam is moved.

Abstract: Provided is an apparatus and method for in-phase (I)/quadrature (Q) separated dual multicarrier transmission in a coherent optical transmission system. A multicarrier transmission apparatus includes a carrier generator configured to generate a plurality of multicarrier signals; and a modulator configured to independently modulate input data with respect to an I component and a Q component of an optical carrier using the generated plurality of multicarrier signals.

Abstract: A vehicular exhaust device is disclosed. The vehicular exhaust device includes an exhaust pipe, which is connected at one end to an exhaust manifold of a cylinder and at the other end to a catalytic converter. In particular, an intermediate portion of the exhaust pipe is in contact with the side surface of the catalytic converter so as to heat the catalytic converter by heat of the exhaust pipe.

Abstract: A receiver device and receiving method for a coherent optical communication system are disclosed. The disclosed device includes: an optical splitter configured to split a received optical signal into at least two paths; a first amplifier configured to amplify a second optical signal from among a first optical signal and the second optical signal split into two paths; a second amplifier configured to amplify the output signal of the first amplifier; and a coherent receiver module configured to mix and detect the output signal of the second amplifier and the first optical signal. The disclosed device provides the advantages of suppressing the occurrence of frequency offsets and minimizing phase noise, as well as allowing manufacture with a low cost without requiring either an additional optical source or additional optical fibers.