Abstract: The present disclosure provides a method for preparing a polymerization initiator composition, including (a) a step of mixing water and a water-soluble initiator to prepare an aqueous initiator solution having a concentration of 1 to 10%; and (b) a step of activating the aqueous initiator solution, wherein the step of activating is performed by (b-1) a step of heat treating the aqueous initiator solution for 0.5 to 4.5 hours at a temperature of 48 to 62° C.; and (b-2) a step of treating the aqueous initiator solution to achieve pH of 1 to 7, where the steps above are performed in no particular order.

Abstract: A low-noise amplifier in a receiver supporting a beam forming function may selectively change a phase shift for beam steering. The low-noise amplifier may include first and second transistors and a variable capacitance circuit connected to a gate of the second transistor. The variable capacitance circuit may selectively change capacitance thereof based on a capacitance control signal applied thereto according to beam-forming information, where the changed capacitance correspondingly causes a phase change in an output signal of the low-noise amplifier. A similar scheme may be employed for amplifiers in transmit signal paths to steer a transmit beam.

Abstract: An optical sensor includes a substrate, a photoelectric element disposed on the substrate and that includes a first electrode, an intermediate layer disposed on the first electrode, and a second electrode disposed on the intermediate layer, a barrier layer disposed on the second electrode, an insulating layer that covers the photoelectric element and the barrier layer, and a bias electrode disposed on the insulating layer and electrically connected to the second electrode. The barrier layer is spaced apart from the first electrode.

Abstract: The present disclosure provides a composition for preparing a vinyl chloride-based polymer, including a vinyl chloride-based first seed; a vinyl chloride-based second seed; an initiator composition including a water-soluble initiator and an oil-soluble initiator; a reducing agent; and a vinyl chloride-based monomer, wherein a metal catalyst is not included in the composition, and a method for preparing a vinyl chloride-based polymer using the same.

Abstract: An autonomous driving control apparatus for controlling autonomous driving around another vehicle that is parked includes a controller configured to receive information about an object sensed by sensors provided in one or more other vehicles from the one or more other vehicles, through a communication device provided in an autonomous vehicle. The controller is further configured to control autonomous driving around the one or more other vehicles based on the received information. The autonomous driving control apparatus allows an autonomous vehicle to safely travel in a space with many persons, such as in a public housing parking lot, a mart parking lot, or the like.

Abstract: The present invention relates to a method and device for manufacturing artificial marble. According to the present invention, artificial marble having a stripe pattern similar to that of natural stone, such as striato, may be provided.

Abstract: The present invention relates to a method and device for manufacturing artificial marble. According to the present invention, artificial marble having a stripe pattern similar to that of natural stone, such as striato, may be provided.

Abstract: A method for controlling a shift-by-wire (SBW) transmission may include detecting whether a shut-down condition is met in a state in which a parking gear stage of a vehicle is released, when it is detected that the shut-down condition is met, starting to drive a parking release device of maintaining release of a parking gear on the basis of an oil pressure of a parking piston or an RPM of an engine, and controlling an ON/OFF duty ratio of electric power of driving the parking release device on the basis of oil pressure of the parking piston, after starting to drive the parking release device.

Abstract: A method for controlling a shift-by-wire (SBW) transmission may include detecting whether a shut-down condition is met in a state in which a parking gear stage of a vehicle is released, when it is detected that the shut-down condition is met, starting to drive a parking release device of maintaining release of a parking gear on the basis of an oil pressure of a parking piston or an RPM of an engine, and controlling an ON/OFF duty ratio of electric power of driving the parking release device on the basis of oil pressure of the parking piston, after starting to drive the parking release device.

Abstract: A dual mode twisted string actuator using a clutch is provided. The twisted string actuator according to an exemplary embodiment of the present disclosure includes: a first actuator; a first coupler which is rotated by the first actuator; a shaft which is coupled to and interlocked with the first coupler; a second coupler which is selectively interlocked with the first coupler and comprises a plurality of string receiving portions; and a string which has one end fixed to the first coupler and the other end fixed to a moving body through the string receiving portions of the second coupler. Accordingly, it is possible to reduce the size of the existing large and heavy transmission system and to miniaturize and lighten the size of the entire drive system.

Abstract: The present invention relates to a method and device for manufacturing artificial marble. According to the present invention, artificial marble having a stripe pattern similar to that of natural stone, such as striato, may be provided.

Abstract: A dual mode twisted string actuator using a clutch is provided. The twisted string actuator according to an exemplary embodiment of the present disclosure includes: a first actuator; a first coupler which is rotated by the first actuator; a shaft which is coupled to and interlocked with the first coupler; a second coupler which is selectively interlocked with the first coupler and comprises a plurality of string receiving portions; and a string which has one end fixed to the first coupler and the other end fixed to a moving body through the string receiving portions of the second coupler. Accordingly, it is possible to reduce the size of the existing large and heavy transmission system and to miniaturize and lighten the size of the entire drive system.

Abstract: The present disclosure relates to a safety power window system capable of detecting jamming of an object between a window and a door frame by generating virtual pulse signals on the basis of pulse signals generated by two hall sensors positioned to have an interval of 90 degrees therebetween to calculate force acting on the window even though a window motor rotates only 0.75 turns, and an operation method thereof.

Abstract: The present disclosure relates to a safety power window system capable of detecting jamming of an object between a window and a door frame by generating virtual pulse signals on the basis of pulse signals generated by two hall sensors positioned to have an interval of 90 degrees therebetween to calculate force acting on the window even though a window motor rotates only 0.75 turns, and an operation method thereof.

Abstract: A micro spike having a three-dimensional structure made of single crystalline silicon and being capable of picking an enough amount of a tissue to examine the tissue while minimizing an examinee's pain with a minimal invasion when picking the tissue and a method of manufacturing the same are disclosed. The micro spike comprising: a main body part; extension parts inserted into a tissue when picking the tissue sample and integratedly extended from upper and lower parts of one side of the main body part; and a protrusion part integratedly protruded from at least one of side surfaces of the extension parts and inserted into the tissue to pick the tissue sample together with the extension parts when picking the living tissue sample.

Abstract: Disclosed are a barb-wired single crystalline silicon micro needle and a biopsy method and a medicine injecting method using the same. The micro needle comprises a main body part, at least one extension part formed on a side surface of the main body part, and a protrusion part protruded from both side surfaces of the extension part. A medicine storage is formed on a surface of the main body part. A fluid passage is formed in the extension part and the main body part. It is easy to pick the tissue sample with the protrusion part just by inserting and extracting the extension part of the micro needle into and from the tissue for a biopsy. Therefore, the biopsy procedures can be simplified. In addition, the medicine in the storage can be injected into the tissue via the fluid passage.

Abstract: Disclosed is a catheter used to pick a sample of a lesion cell tissue existing in the living body, and more particularly a catheter capable of freely coupling or separating a micro biopsy tool and picking a tissue required for an examination just by inserting and extracting the biopsy tool into and from a lesion region when picking the tissue. The catheter can pick a tissue required to diagnose and treat an examinee with a minimal invasion. Accordingly, it is possible to alleviate the examinee's pain and to prevent a perforation from occurring in the picked region when picking the tissue. In addition, according to the catheter of the invention, since the micro biopsy tool can be easily mounted and separated, the catheter can be semi-permanently used by continuously replacing the biopsy tool only.

Abstract: Disclosed is a holder including: a holder body within which a hollow portion for receiving and supporting an object is formed; and at least one protrusion protruding from an outer circumferential surface of the holder body and thereby preventing a hand holding the holder body from slipping upward.

Abstract: Disclosed are a barb-wired single crystalline silicon micro needle and a biopsy method and a medicine injecting method using the same. The micro needle comprises a main body part, at least one extension part formed on a side surface of the main body part, and a protrusion part protruded from both side surfaces of the extension part. A medicine storage is formed on a surface of the main body part. A fluid passage is formed in the extension part and the main body part. It is easy to pick the tissue sample with the protrusion part just by inserting and extracting the extension part of the micro needle into and from the tissue for a biopsy. Therefore, the biopsy procedures can be simplified. In addition, the medicine in the storage can be injected into the tissue via the fluid passage.