Abstract: Disclosed is a method for setting authority for use of a brain stimulation device and a device implementing the same, and the method for setting authority for use of a brain stimulation device according to the present disclosure comprises the steps in which: a communication unit of a personal communication device receives, from a server device, a time token for which the authority for use of the brain stimulation device is set; the communication unit transmits the time token to the brain stimulation device or the server device; and after a time corresponding to the usage time of the brain stimulation device stored in the time token has elapsed, the communication unit receives, from the brain stimulation device or the server device, a message to delete the time token or to change the value of a specific field of the time token.

Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.

Abstract: An electronic device according to an embodiment may include a housing, which includes a front structure and a rear structure attached to each other, and a touch screen display. The front structure of the housing may include a first plate facing a first direction and a side plate extending from the first plate. The first plate may have a first thickness. The side plate may have a second thickness larger than the first thickness. The side plate may include a first surface facing a peripheral portion of the rear structure. The rear structure may include a second plate facing a second direction opposite the first direction and a second surface facing the first surface. The first surface may face a third direction. The second surface may face a fourth direction. The third and fourth directions may be configured to differ from the first and second directions, respectively. The touch screen display may have at least a part exposed through at least a part of the first plate. Other various embodiments may be possible.

Abstract: Disclosed is a method for setting authority for use of a brain stimulation device and a device implementing the same, and the method for setting authority for use of a brain stimulation device according to the present disclosure comprises the steps in which: a communication unit of a personal communication device receives, from a server device, a time token for which the authority for use of the brain stimulation device is set; the communication unit transmits the time token to the brain stimulation device or the server device; and after a time corresponding to the usage time of the brain stimulation device stored in the time token has elapsed, the communication unit receives, from the brain stimulation device or the server device, a message to delete the time token or to change the value of a specific field of the time token.

Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.

Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.

Abstract: An electronic device according to an embodiment may include a housing, which includes a front structure and a rear structure attached to each other, and a touch screen display. The front structure of the housing may include a first plate facing a first direction and a side plate extending from the first plate. The first plate may have a first thickness. The side plate may have a second thickness larger than the first thickness. The side plate may include a first surface facing a peripheral portion of the rear structure. The rear structure may include a second plate facing a second direction opposite the first direction and a second surface facing the first surface. The first surface may face a third direction. The second surface may face a fourth direction. The third and fourth directions may be configured to differ from the first and second directions, respectively. The touch screen display may have at least a part exposed through at least a part of the first plate. Other various embodiments may be possible.

Abstract: The present disclosure relates to a polyethylene fiber and a method for preparing thereof, and more particularly to a polyethylene fiber, a method for preparing thereof, and an apparatus for preparing thereof, which has excellent wearing and touch sensation with processing convenience into woven fabrics and knitted fabrics in use in applied products by reducing the stiffness of fiber having the same physical properties using an enforced necking method in a spinning process.

Abstract: A compression encoding method which, when performing data conversion using the fact that when data is converted into frequency components, the human eye is sensitive to components close to low frequency components and insensitive to components close to high frequency components, configures a filter in which importance is placed on DC data and its adjacent filter coefficients, calculates the cost for a conversion block which has undergone conversion and quantization, which is required for the data removal of compression encoding using the filter, determines data targets to be removed using the calculated cost and set reference values, and removes the corresponding data, thereby reducing the amount of data to be compressed and therefore increasing compression efficiency without influencing image quality.

Abstract: A milling unit of a book binding device removes a coating material adhered to cutting surfaces of coating sheets. A book binding device binding a bunch of sheets fed from a sheet aligning unit includes a sheet aligning plate aligning a section of the bunch of sheets fed from the sheet aligning unit; a gripper fixing the bunch of sheets aligned by the sheet aligning plate; an adhesive unit feeding an adhesive member to the section of the bunch of sheets to bind the bunch of sheets; and a milling unit milling the section of the bunch of sheets before the bunch of sheets is subjected to binding by the adhesive unit.

Abstract: A method and apparatus to manage a database in which a data file and an index file are efficiently disposed include generating a table space in such a way that a region of a database in which data in a table form is stored is allocated to a first storage device, and a region of the database in which index information used to search for the data is stored is allocated to a second storage device, storing the data in table form in the first storage device and the index information in the second storage device according to the table space, and storing the data in the database or searching the database according to an input query.

Abstract: A milling unit of a book binding device is disclosed, which removes a coating material adhered to cutting surfaces of coating sheets. A book binding device binding a bunch of sheets fed from a sheet aligning unit comprises a sheet aligning plate aligning a section of the bunch of sheets fed from the sheet aligning unit; a gripper fixing the bunch of sheets aligned by the sheet aligning plate; an adhesive unit feeding an adhesive member to the section of the bunch of sheets to bind the bunch of sheets; and a milling unit milling the section of the bunch of sheets before the bunch of sheets is subjected to binding by the adhesive unit.

Abstract: Disclosed are structure for inlaying precious metal in and outer peripheral surface of a ring and method for manufacturing a ring inlaid with precious metal in an outer peripheral surface. The ring includes a annular blank obtained by compressing a powdered mixture including 80 to 85 weight percent of tungsten carbide in a mold by means of a hydraulic press, and a precious metal inlaid in an outer peripheral surface of the annular blank after sintering the annular blank. An annular groove is formed at an outer peripheral surface of the annular blank, in which the annular groove is defined by sidewalls, which are inwardly inclined in a downward direction, and a bottom wall. Inclined slots having a gradient identical to that of the inclined sidewalls are formed at both lower edge portions of the annular groove, in which the lower edge potions are defined between the bottom wall and the inclined sidewalls.

Abstract: Disclosed are a jig and a method for forming a satin surface on an outer peripheral surface of a ring made of a rigid material by processing the outer peripheral surface of the ring using a diamond bite in a state in which inner and outer peripheral surfaces of the ring do not represent a perfect roundness and a center of the outer peripheral surface of the ring is offset from that of the inner peripheral surface of the ring. The method includes the steps of supporting both sides of the ring while rotating the ring, and processing the outer peripheral surface of the ring by using the diamond bite.

Abstract: Disclosed is a method for printing a mark on an inner peripheral surface of a ring by using a laser marking apparatus. The laser marking apparatus includes a jig for rotatably supporting the ring, a laser oscillator and a galvano scanner, in which the jig is installed below a laser irradiation port provided in the galvano scanner, grips an outer peripheral surface of the ring such that the ring is inclined at an angle of 5 to 20° with respect to a vertical line, and rotates the ring about a center of the ring as driving force is applied thereto from a stepping motor. The jig is driven such that the jig performs one revolution per 10000 steps of the stepping motor. A plurality of sub-marks having a size of 2 mm are formed by dividing the mark to be printed on the inner peripheral surface of the ring in a transverse direction thereof and the sub-marks are sequentially printed on the inner peripheral surface of the ring through laser irradiation.

Abstract: Disclosed are structure for inlaying precious metal in and outer peripheral surface of a ring and method for manufacturing a ring inlaid with precious metal in an outer peripheral surface. The ring includes a annular blank obtained by compressing a powdered mixture including 80 to 85 weight percent of tungsten carbide in a mold by means of a hydraulic press, and a precious metal inlaid in an outer peripheral surface of the annular blank after sintering the annular blank. An annular groove is formed at an outer peripheral surface of the annular blank, in which the annular groove is defined by sidewalls, which are inwardly inclined in a downward direction, and a bottom wall. Inclined slots having a gradient identical to that of the inclined sidewalls are formed at both lower edge portions of the annular groove, in which the lower edge potions are defined between the bottom wall and the inclined sidewalls.

Abstract: A filtering apparatus for a hard disk drive includes a housing in which a hard disk is rotatably installed, a filter for filtering particles from air flowing in the housing, and a holder installed at the top and bottom of the inside of the housing for supporting the filter by encompassing an upper portion and a lower portion thereof, so that a gap is not generated between the filter and the top, and between the filter and the bottom.

Abstract: A noise damping device for a rotating body and a disk player is disclosed. The noise damping device for a rotating body is characterized in that inner surfaces of a housing in which the rotating body is installed are provided with an intaglio and/or cameo pattern of a predetermined shape. The pattern guides the air flow within the housing smoothly, and damps noise. Also, the noise damping device for a disk player is characterized in that an intaglio and/or cameo pattern of a predetermined shape is formed on surfaces of a disk tray and/or a clamping member.

Abstract: A noise damping device of a rotation driving apparatus includes a housing; and at least one rotating disk installed to be rotated by a driving source within the housing. The rotating disk and the housing are assembled to satisfy the following Equation &dgr;m<h<&dgr;m+1.5&dgr;f &dgr;m is the thickness of air layers which move from the rotation center of the rotating disk to the outside thereof and are distributed around the rotating disk when the rotating disk rotates at a normal operating speed. &dgr;f is the thickness of air layers which move from the outside of the rotating disk to the rotation center thereof and are distributed around the upper inside surface and the base surface of the housing, which face the rotating disk. h is the distance between the rotating disk and the upper inside surface or the base surface of the housing.

Abstract: A noise and vibration damping device of a rotation driving apparatus includes a housing in which a body is rotatably installed, and a driving source that rotates the body. Speed reducing filters are installed on inner surfaces of the housing for reducing the speed of air flow within the housing generated by the rotation of the body.