Abstract: Provided is a network self-healing method in which, when a link between a parent device and a child device breaks down in a wireless communication network of a cluster-tree structure in which a main communication device (referred to an access point (AP)) manages network operation, routers that are devices capable of having their child devices, and end devices that are devices incapable of having their child devices are associated with each other in a parent-child device relationship, the link is restored. When a router becomes an orphan device, the router makes network re-association in a cluster unit while maintaining synchronized operation with its child devices, and thus time, energy and signaling burden for network self-healing is largely reduced.

Abstract: Provided is an IV flow controller which adjusts the amount of an IV material supplied to a patient through an IV tube and to which a flushing feature is added. The IV controller according to the present invention includes: a first body unit, a second body unit, a fixed roller, and a driving roller. The fixed roller is fixedly and rotatably arranged, and has a first gear unit and a second gear unit. The driving roller is accommodated such that a portion thereof is exposed, and the driving roller is moved along the lengthwise direction while controlling the flow of the IV when the exposed portion is turned. Also, in the flushing position, the driving roller rotates in cooperation with the first gear unit of the fixed roller across the IV tube so as to flush the latter. The second gear unit of the fixed roller may be configured so as to have a ratchet gear, and the second body unit has a pawl which meshes with the ratchet gear of the fixed roller in order to prevent reverse rotation.

Abstract: The present invention relates to an adaptor for a slit lamp microscope. According to one embodiment of the present invention, the invention provides the advantages of: facilitating the maintenance/repair of a slit lamp microscope since a camera member used for the slit lamp microscope is simply attached or detached; simply and easily inspecting and photographing a subject's eye; and obtaining a high-resolution video or image for the subject's eye at low costs.

Abstract: The present invention provides a thermoplastic lignin polycondensate. The thermoplastic lignin polycondensate produces no fumes and odor even at a normal melt processing temperature. The melt viscosity of the thermoplastic lignin polycondensate can be measured even when heated to 200° C. or more. The thermoplastic lignin polycondensate can be prepared by selectively activating the hydroxyl reactive groups of lignin to suppress the crosslinking reaction of the hydroxyl reactive groups, which allows a linear or grafted linear growth of the lignin polycondensate.

Abstract: A semiconductor package may include a package substrate, an MRAM chip, a first magnetic shielding film and a second magnetic shielding film. The MRAM chip may be arranged over the package substrate. The MRAM chip may be electrically connected with the package substrate. The first magnetic shielding film may attach the MRAM chip to the package substrate. The first magnetic shielding film may shield magnetic interference between the MRAM chip and the package substrate. The second magnetic shielding film may be arranged over the MRAM chip to shield magnetic interference at an upper region over the MRAM chip. Thus, the magnetic shielding layer may be arranged between the bonding pads of the MRAM chip so that magnetic interference between the bonding pads may be suppressed.

Abstract: Provided is a manufacturing method of uniformly spherical gold nanoparticles using a synthesis method for controlling a size and a shape by repeating an etching and growing.

Abstract: The present invention provides a thermoplastic lignin polycondensate. The thermoplastic lignin polycondensate produces no fumes and odor even at a normal melt processing temperature. The melt viscosity of the thermoplastic lignin polycondensate can be measured even when heated to 200° C. or more. The thermoplastic lignin polycondensate can be prepared by selectively activating the hydroxyl reactive groups of lignin to suppress the crosslinking reaction of the hydroxyl reactive groups, which allows a linear or grafted linear growth of the lignin polycondensate.

Abstract: Provided is an IV flow controller which adjusts the amount of an IV material supplied to a patient through an IV tube and to which a flushing feature is added. The IV controller according to the present invention includes: a first body unit, a second body unit, a fixed roller, and a driving roller. The fixed roller is fixedly and rotatably arranged, and has a first gear unit and a second gear unit. The driving roller is accommodated such that a portion thereof is exposed, and the driving roller is moved along the lengthwise direction while controlling the flow of the IV when the exposed portion is turned. Also, in the flushing position, the driving roller rotates in cooperation with the first gear unit of the fixed roller across the IV tube so as to flush the latter. The second gear unit of the fixed roller may be configured so as to have a ratchet gear, and the second body unit has a pawl which meshes with the ratchet gear of the fixed roller in order to prevent reverse rotation.

Abstract: Provided are a curable compound, a photoinitiator, and a curable resin composition comprising at least two types of thermal initiators, each having different initiation reaction temperature. Since the curable resin composition can improve a curing rate while having a high conversion rate, the curable resin composition is suitable for manufacturing thick films.

Abstract: A power conversion apparatus includes a plurality of converters which independently converts a voltage of power output from a power source, a measuring instrument which measures at least one predetermined characteristic value of power to be supplied from the power source to a load, and a controller for enabling or disabling each of the plurality of converters based on the at least one predetermined characteristic value.

Abstract: A semiconductor package includes a substrate, a semiconductor chip attached to an upper surface of the substrate, a molding material configured to surround side surfaces of the semiconductor chip, and a heat-spreading part disposed on the semiconductor chip. The heat-spreading part includes a thermal conductive film and a heat slug that are integrated together. Also provided is a method for its manufacture.

Abstract: A fuel cell system a includes a cooling water temperature raising unit that raises the temperature of a fuel cell stack by passing discharge gas of a process burner or hydrogen gas of a fuel processing unit and cooling water that is heated by the discharge gas of the process burner through flow paths formed on opposing surfaces of cooling separators formed of a metal and installed between a plurality of cells in the stack. Thus in the fuel cell system, when the temperature of the stack needs to be rapidly raised, for example, during a start up operation of the fuel cell system, the temperature of the stack can be rapidly raised using discharge gas at a high temperature or combustion heat of hydrogen gas, and heated cooling water, and thereby, significantly reducing the time required for the fuel cell system to be in regular operation.

Abstract: A backlight assembly includes an optical member that diffuses light generated from lamps. The optical member includes first and second diffusion members that are designed to have light transmittance that complementarily vary according to areas. Thus, an optical member capable of supplying light having uniform brightness onto the whole display area of the LCD is easily designed.

Abstract: A method of starting a polymer electrolyte membrane fuel cell (PEMFC) stack by rapidly increasing its temperature. The PEMFC stack includes: a first flow line connected to cooling plates; a second flow line connected to the cooling plates; a coolant reservoir; a heat exchanger; a by-pass line; a heating element; a first valve installed between the first flow line and the heat exchanger; and a second valve that selectively connects the coolant reservoir, the second flow line, and the by-pass line. The method of starting a PEMFC stack includes: closing the first valve and controlling the second valve so that the second flow line and the by-pass line are connected to each other, and the coolant in the coolant reservoir is not connected to the second flow line and the by-pass line; and heating the coolant in the by-pass line.

Abstract: A display apparatus includes a display panel and a backlight unit for an embodiment. The display panel includes a plurality of pixels and the backlight unit supplies light to the display panel. The backlight unit includes a light source, which generates the light, and an optical sheet. The optical sheet includes a plurality of prism patterns formed on a surface of the optical sheet facing the display panel. The prism patterns include a plurality of peaks and a plurality of valleys to change the path of the light, and a plurality of diffusion patterns arranged at the peaks and valleys.

Abstract: Disclosed herein are a light guide plate and a backlight assembly using the same, which may improve the uniformity of light using prism patterns having a trapezoidal shape. The light guide plate includes a body, a plurality of first projections, and a plurality of second projections. The body includes an incident surface to which light is incident and an emitting surface from which the incident light is emitted. The plurality of first projections is disposed on the emitting surface of the body and has a trapezoidal shape in a section perpendicular to the incident surface. The plurality of second projections is disposed on the emitting surface of the body and has a shape symmetrical to a shape of the first projections.

Abstract: An optical sheet includes a base layer, a light-condensing layer and a plurality of light-reflecting portions. The light-condensing layer includes a plurality of light-condensing portions formed on a second surface of the base layer along a first direction extending from a first side surface to a second side surface perpendicular to the first side surface. The light-condensing portions extended in a second direction crossing the first direction at an angle with respect to the side surface. The light-reflecting portions are formed in the first surface along the second direction and corresponding to a plurality of recesses where the light-condensing portions meet each other. The center of the light-reflecting portion is off set from the recesses along the first direction.

Abstract: A manufacturing method of an optical member includes forming an optical film which has a first glass transition temperature and includes a pattern formed on a surface of the optical film, and an optical plate which has a second glass transition temperature that is lower than the first glass transition temperature, disposing the optical film and the optical plate adjacent each other so that the pattern faces the optical plate, pressurizing the optical film and the optical plate while heating the optical plate to the second glass transition temperature or higher, and forming the optical member by the pressurizing and the heating.

Abstract: A light-guide plate includes a base plate, first protrusion patterns and second protrusion patterns. The first protrusion patterns are formed on a left portion of an upper surface of the base plate with respect to a central line of the upper surface. The first protrusion patterns have a cross-section of a trapezoidal shape which has a top and a bottom parallel with each other and first and second inclined sides inclined at different angles with respect to the bottom side. The second protrusion patterns are formed on a right portion of the upper surface with respect to the central line. A cross-section of the second protrusion patterns have the trapezoidal shape and disposed substantially symmetrical to the first protrusion patterns with respect to the central line.

Abstract: A backlight assembly and a display apparatus having the backlight assembly are disclosed. A diffusion plate is provided above a plurality of lamps. Diffusion patterns that cause contrast inversion and diffusion patterns that do not cause contrast inversion are arranged on a surface of a diffusion plate, in an alternating manner along a longitudinal direction of the lamps. Thus, a brightness difference between a first area in which the lamps are positioned and a second area between two adjacent lamps is reduced, thereby improving a brightness uniformity of light from the backlight assembly.