Abstract: An antenna apparatus includes: a parabolic reflector; a dielectric support pedestal; a sub-reflector connected to an upper part of the dielectric support pedestal; and a waveguide connected to a lower part of the dielectric support pedestal, wherein the parabolic reflector has a curved surface in which a ratio of a focal length to a diameter is greater than a preset value, and at least one corrugation configured to suppress a cross polarization is formed in a region of the dielectric support pedestal.

Abstract: A method of fabricating a capacitive micromachined ultrasonic transducer (CMUT) according to one aspect of the present invention may include forming, on a semiconductor substrate, a first region implanted with impurity ions at a first average concentration and a second region implanted with no impurity ions or implanted with the impurity ions at a second average concentration lower than the first average concentration, forming an insulating layer by oxidizing the semiconductor substrate wherein the insulating layer includes a first oxide layer having a first thickness on at least a part of the first region and a second oxide layer having a second thickness smaller than the first thickness on at least a part of the second region, and forming a membrane layer on the insulating layer such that a gap is defined between the second oxide layer and the membrane layer.

Abstract: An embodiment of the present invention relates to a cylindrical secondary battery in which a positive electrode terminal is adhered and fixed to a cylindrical can by an insulating sheet, and thus sealing between the cylindrical can and the positive electrode terminal can be facilitated due to an increased contact area.

Abstract: A cylindrical secondary battery includes: an electrode assembly including a first electrode plate and a second electrode plate; a cylindrical case having a disk-shaped top portion and a side portion extending from the top portion, the cylindrical case accommodating the electrode assembly; a cathode terminal extending through the top portion and insulated therefrom; a first current collector plate electrically connected to the first electrode plate and the cathode terminal; a second current collector plate electrically connected to the second electrode plate and the side portion of the cylindrical case; a cap plate coupled to the side portion and insulated therefrom; and an insulation tape between the top portion of the cylindrical case and the first current collector plate and covering the first current collector plate.

Abstract: Provided are a PCR buffer composition for increasing the activity of a DNA polymerase having increased gene mutation specificity, a PCR kit for detecting a gene mutation or SNP comprising the PCR buffer composition and/or the DNA polymerase having increased gene mutation specificity, and a method for in vitro detecting one or more gene mutations or SNPs in one or more templates by using the kit.

Abstract: According to the present disclosure, an antenna apparatus which includes a hollow pillar shaped waveguide extending in a first direction and at least one ridge protruding from an inner circumferential surface of the waveguide and extending in the first direction, wherein the ridge has at least one recessed groove formed in the first direction; and an antenna apparatus which includes the waveguide, the ridge and the iris structure protruding from the inner circumferential surface of the waveguide along a plane intersecting the first direction, are provided.

Abstract: According to the present disclosure, an antenna apparatus which includes a hollow pillar shaped waveguide extending in a first direction and at least one ridge protruding from an inner circumferential surface of the waveguide and extending in the first direction, wherein the ridge has at least one recessed groove formed in the first direction; and an antenna apparatus which includes the waveguide, the ridge and the iris structure protruding from the inner circumferential surface of the waveguide along a plane intersecting the first direction, are provided.

Abstract: A control device for a vehicle includes a sensor unit detecting wheel acceleration based on a wheel speed of a wheel of the vehicle; a filter unit generating a wheel acceleration graph using the wheel acceleration detected by the sensor unit; a storage unit updating and storing a reference point of the wheel acceleration on the wheel acceleration graph; a slope calculation unit calculating a slope of the wheel acceleration based on the reference point on the wheel acceleration graph; and a determination unit determining whether a jerk occurred in the vehicle using a change amount of the reference point and the slope of the wheel acceleration.

Abstract: The embodiments generally relate to an antenna device that includes a cover having a specific shape to suppress a sidelobe of an elevation angle gain pattern which is caused by a radio-frequency (RF) device regardless of an avoidance area.

Abstract: A cylindrical secondary battery includes: an electrode assembly including a positive electrode plate, a separator, and a negative electrode plate; a cylindrical can accommodating the electrode assembly, a lower end of the cylindrical can being electrically connected to the negative electrode plate; a terminal passing through a top surface of the cylindrical can and electrically connected to the positive electrode plate; and a cap plate coupled at the lower end of the cylindrical can. The cap plate is sealed to the lower end of the cylindrical can by welding.

Abstract: A pneumatic tire to be combined with a rim is proposed. The tire may include a bead for preventing the pneumatic tire from coming off the rim. The tire may also include an apex configured to absorb an impact applied to the bead. The tire may further include a carcass extending to surround a portion of the apex and including a steel cord. The carcass may include a first carcass end portion disposed closer to one end of both ends of the apex in a radial direction of the pneumatic tire which is connected to the bead than the other end of the apex spaced apart from the bead.

Abstract: The present invention provides a pneumatic tire in which a steel cord carcass ply composed of an ultrafine wire having a filament diameter of 0.15 mm or less is used as a reinforcing material, and the carcass ply is positioned between the bead cords without turn-up of the carcass ply for turning up it through an annular bead bundle on an upper side of the carcass ply, such that side rigidity is maintained even when replacing two conventional fiber carcass plies with one steel carcass. Thereby, rather than the conventional turn-up method of turning up the carcass ply on the upper side of the annular bead bundle, the carcass ply passes through the bead bundles as shown in FIG. 3, such that a deformation energy of the bead portion is minimized and a rolling resistance is maximized. The tire of the present invention is characterized by satisfying a correlation equation between a height Bh1 of an inner bead bundle position and a height Ah of the bead portion including an apex of 1.2<Ah/Bh1<4.5.

Abstract: A field-assembly optical connector includes an inner sleeve module, a connector frame housing the inner sleeve module, and a cable boot coupled to the inner sleeve module to protect a sheath of an optical fiber. The inner sleeve module includes a sleeve body having a sleeve, an intermediate connector fitted on the sleeve body and having protrusions, a spring fitted on a threaded portion of the sleeve body, a fixing ring screwed to the threaded portion of the sleeve body, and a ferrule stub inserted into the sleeve body through the fixing ring. A cable boot is fixed to the sleeve body and is coupled to the intermediate connector to be moveable within a predetermined range.

Abstract: The present invention relates to an optical connection technology, and more specifically, to a field-assembled optical connector configured to prevent bending phenomenon in which an optical fiber is bent when the optical connector is assembled by using an adapter.

Abstract: The present invention relates to a fibre optic fusion splicing technique, in particular to a fibre optic fusion splicer for reliable and stable fibre optic fusion splicing, that is characterized by comprising: an alignment part for fixing and aligning first and second optical fibres that are to be fusion spliced; a fusion splicing module having an electrode bar for fusion splicing the first and second optical fibres that are fixed to and aligned in the alignment module; an optical module for photographing the aligned state of the first and second optical fibres aligned by the alignment module, and the fusion-spliced state of the first and second optical fibres fusion-spliced by the fusion splicing module; a support part in which the fusion splicing module and the optical module are mounted; and a lift module for moving the support part up and down.

Abstract: The present invention relates to a fibre optic fusion splicing technique, in particular to a fibre optic fusion splicer for reliable and stable fibre optic fusion splicing, that is characterized by comprising: an alignment part for fixing and aligning first and second optical fibres that are to be fusion spliced; a fusion splicing module having an electrode bar for fusion splicing the first and second optical fibres that are fixed to and aligned in the alignment module; an optical module for photographing the aligned state of the first and second optical fibres aligned by the alignment module, and the fusion-spliced state of the first and second optical fibres fusion-spliced by the fusion splicing module; a support part in which the fusion splicing module and the optical module are mounted; and a lift module for moving the support part up and down.

Abstract: The present invention provides a pneumatic tire, which includes a belt layer laminated and formed on an upper side of a carcass ply inside a tread portion, and a plurality of air vent cords arranged between the carcass ply and the belt with a predetermined interval, wherein at least a part of the air vent cords is formed so as to have electrical conductivity, thus to electrically communicate the carcass ply and the belt layer with each other, such that a static electricity generated in a body of an automobile is discharged through the tread grounded to the road surface via the carcass ply which electrically contacts with a tire wheel, thereby preventing an accident that may occur due to the static electricity in the automobile.

Abstract: The present disclosure relates to a cable bead for a pneumatic tire which constitutes a bead part of a pneumatic tire, improves rubber permeability by restricting a ratio between a diameter of a cable and a pitch of an outer wire, and improves durability of a pneumatic tire by improving rubber adhesive properties through cobalt coating on a surface of the outer wire, and a pneumatic tire having the same, and the cable bead for a pneumatic tire is characterized in that the diameter D of the cable and a pitch P of the outer wire 20 satisfy a relationship formula, P/D=25 to 45, and further characterized in that the surface of the outer wire 20 is coated with cobalt after wire drawing.

Abstract: A wireless power transmission method includes searching for one or more routes to be used to transmit power to a reception resonator through one or more relay resonators, and converting the routes to respective one or more two-port networks. The method further includes calculating a transmission efficiency of each of the routes based on the two-port networks, and selecting a route with a highest transmission efficiency from the routes. The method further includes wirelessly transmitting power to the reception resonator through the selected route.

Abstract: Provided is an apparatus that may control a direction of wireless power transmission. A radiative wireless power transmitter may include at least two first unit resonators to form a magnetic field with a target resonator based on an x-axis direction and a z-axis direction, and to transmit a resonance power to the target resonator, at least two second unit resonators to form a magnetic field with the target resonator based on the x-axis direction and a y-axis direction, and to transmit a resonance power to the target resonator, at least two third unit resonators to form a magnetic field with the target resonator based on the y-axis direction and the z-axis direction, and to transmit a resonance power to the target resonator, and a feeding unit to control resonance power transmission of the at least two first unit resonators, the at least two second unit resonators, and the at least two third unit resonators.