Abstract: Disclosed herein is a polycarbonate resin composition. The polycarbonate resin composition includes: a polycarbonate resin; a polyalkylene glycol compound; and an anthraquinone colorant, wherein the polycarbonate resin composition has a yellow index (YI) of about ?2 to about 2, as measured in accordance with ASTM D1925 after irradiating an about 3.2 mm thick specimen with ?-rays at about 25 kGy and leaving the specimen for 7 days and has an a* value of about ?2 to about 2 and a b* value of ?2 to about 2 as measured in accordance with ASTM D2244 after irradiating an about 3.2 mm thick specimen with ?-rays at about 25 kGy and leaving the specimen for 7 days. The polycarbonate resin composition can exhibit excellent properties in terms of color, transparency, and impact resistance after being irradiated with ionizing radiation.

Abstract: A polycarbonate resin composition includes: a polycarbonate resin; a polyalkylene glycol compound; and an organic-inorganic hybrid pigment, and has a yellow index (YI) of about ?2 to about 4 after irradiation with gamma rays, as measured in accordance with ASTM D1925 after irradiating an about 3 mm thick specimen with gamma rays at about 25 kGy and leaving the specimen for 7 days. The polycarbonate resin composition can exhibit excellent properties in terms of color and impact resistance after being irradiated with ionizing radiation.

Abstract: A polycarbonate resin composition of the present invention comprises: a polycarbonate resin; and a release agent containing a fatty acid ester compound and paraffin wax, wherein the fatty acid ester compound and the paraffin wax are contained in a weight ratio ranging from about 1:about 0.2 to about 1:about 1. The polycarbonate resin composition is excellent in terms of release properties, transparency, heat resistance, hydrolysis resistance, etc.

Abstract: A polycarbonate resin composition of the present invention comprises: a polycarbonate resin; a polyalkylene glycol; an epoxy ester compound containing an ester group and an epoxy group; and a halogenated polycarbonate oligomer. The polycarbonate resin composition has excellent discoloration resistance, color, hydrolysis resistance, flame retardancy and the like even after being irradiated with ionizing radiation.

Abstract: An apparatus and a method for controlling a motor-driven power steering system can inhibit a change in steering feeling which may be caused by abrasion and degradation of components in the motor-driven power steering system, and maintain initial steering feeling. The method determines a torque compensation amount by comparing a reference value with change ratio average data of steering torque with respect to a steering angle, and compensates for driver input torque in accordance with the determined torque compensation amount, such that it is possible to effectively inhibit the change in steering feeling which may be caused by abrasion and degradation of components, and maintain the initial steering feeling.

Abstract: Provided is a functional fabric including a base fabric layer; and an insulation flexible sheet attached to at least one surface of the base fabric layer. The insulation flexible sheet includes a first flexible base; and an insulation coating layer attached to at least one surface of the base. The insulation flexible sheet may additionally include a second flexible base on the insulation coating layer. Accordingly, the functional fabric may have effective insulation properties by using silica particles having pores in a small amount used, and may have excellent strength due to the strength of the silica particles. In addition, Manufacturing methods of an insulation flexible sheet and a functional fabric are provided.

Abstract: Disclosed is a brake disc for vehicles including a ring-shaped disc part provided with an insertion space formed at the central region thereof, a hub part disposed within the insertion space and provided with recesses formed on the external circumferential surface thereof, and connection parts configured to connect the disc part and the hub part, wherein each of the connection parts is divided into a curved section extending from the internal circumferential surface of the disc part and having both curved side surfaces and a rectilinear section extending from the curved section, having both flat side surfaces and inserted into each of the recess, and widths of the curved section and the rectilinear section are decreased in a direction toward the hub part.

Abstract: A polycarbonate resin of the present invention comprises: a repeat unit represented by chemical formula 1 in the specification; a repeat unit represented by chemical formula 2; and a repeat unit represented by chemical formula 3. The polycarbonate resin has excellent flame retardancy, thermal resistance, transparency, impact resistance, etc.

Abstract: The present invention relates to a method for controlling the position of a vehicle to ensure stable position of a vehicle against tilting due to a rapid change in vehicle speed. The method includes: determining whether a vehicle speed is rapidly changing in a straight direction on the basis of an extent of depression of a pedal that changes a position of a steering wheel and a change in vehicle speed; determining whether the vehicle is tilting on the basis of a change in a yaw-rate by means of the controller when the vehicle speed is rapidly changing in the straight direction; and providing compensation torque in the direction opposite the direction in which the vehicle is tilted by operating a steering motor when the controller determines that the vehicle is tilting.

Abstract: A secondary battery pack includes: a secondary battery module including battery cells and cooling fins; a first structure provided under the secondary battery module and including a cooling channel and a coupling bracket; and a second structure provided over the secondary battery module and including a printed circuit board.

Abstract: The secondary battery module includes: A secondary battery module, comprising: a plurality of sub modules, each including battery cell and cooling fin wherein the battery is disposed on both side surfaces of the cooling fin; a cooling plate which is coupled to the plurality of the sub modules; and side structures having bus bars, wherein a terminal unit is disposed at each of the plurality of sub modules, wherein the terminal unit includes a contact terminal disposed between electrode tabs of the battery cells; and a wing terminal which extends outwardly from one end of the contact terminal, wherein the terminal unit disposed at one of the plurality of sub modules is connected with another terminal unit disposed at another sub module by one of the bus bars.

Abstract: A secondary battery pack includes: a secondary battery module including battery cells and cooling fins; a first structure formed under the secondary battery module and including a cooling channel and coupling brackets; a second structure which is formed in a shape mounted on side faces of the secondary battery module and includes a printed circuit board; and a cover mounted over the second structure.

Abstract: A device and method for quantum key distribution (QKD). The QKD center includes an authentication key sharing unit for sharing authentication keys with QKD client devices; a quantum key generation unit for generating a sifted key for each of the QKD client devices using a quantum slate; an error correction unit for generating output bit strings by correcting errors of the sifted keys; and a bit string operation unit for calculating an encryption bit string by performing a cryptographic operation on the authentication keys, the distribution output bit strings and output bit strings received from the QKD client devices. The present invention improves security by preventing the QKD center from being aware of keys shared among users.

Abstract: Disclosed are a submodule and a battery module having the same, the submodule being comprising a three or more odd numbers of cells, and including: a cell unit divided into one single cell and at least one double cell; a first cooling fin provided at a side of the single cell and bent in a thickness direction of the single cell; and a second cooling fin provided between two cells composing the double cell and bent in thickness directions of the two cells. The single cell is cooled by the first cooling fin in surface contact with an exposed surface of the single cell, and the double cell is cooled by the second cooling fin in surface contact with stacked surfaces of the two cells, whereby all cells can be equally cooled, and energy density of the submodule can be increased by using a minimum number of members.

Abstract: The polycarbonate resin composition of the present invention comprises: a polycarbonate ingredient including a copolymerized polycarbonate resin and an aromatic polycarbonate resin, the copolymerized polycarbonate resin having a repeating unit represented by chemical formula 1 of claim 1, a repeating unit represented by chemical formula 2 of claim 1, and a repeating unit represented by chemical formula 3 of claim 1; and an acrylic-based impact reinforcing agent. The polycarbonate resin composition has excellent scratch resistance, impact resistance, and heat resistance.

Abstract: A polycarbonate resin of the present invention is characterized by comprising repeating units represented by Formula 1, Formula 2, Formula 3 and Formula 4, respectively.

Abstract: A method for preparing an aromatic carbonate, of the present invention, comprises the steps of: (A) preparing a reaction mixture containing an aliphatic carbonate by reacting an organometallic compound and carbon dioxide; and (B) preparing an aromatic carbonate by reacting the reaction mixture and an aromatic alcohol. The method for preparing an aromatic carbonate allows an aromatic carbonate to be economically prepared in a high yield by using carbon dioxide as a carbonyl supply source.

Abstract: An apparatus and a method for controlling a motor-driven power steering system can inhibit a change in steering feeling which may be caused by abrasion and degradation of components in the motor-driven power steering system, and maintain initial steering feeling. The method determines a torque compensation amount by comparing a reference value with change ratio average data of steering torque with respect to a steering angle, and compensates for driver input torque in accordance with the determined torque compensation amount, such that it is possible to effectively inhibit the change in steering feeling which may be caused by abrasion and degradation of components, and maintain the initial steering feeling.

Abstract: Provided is a transparent polycarbonate composition that includes: (A) 5 to 95 wt % of biphenyl modified polycarbonate including a repeating unit represented by Chemical Formula 1, a repeating unit represented by Chemical Formula 2, and a repeating unit represented by Chemical Formula 3; and (B) 1 to 50 wt % of an acrylate-based copolymer including (B-1) a repeating unit derived from aromatic (meth)acrylate having a refractive index of 1.58 to 1.70 and (B-2) a repeating unit derived from a mono-functional unsaturated monomer.

Abstract: Provided are hollow silica particles that have a refractive index of 1.2-1.4, a thermal conductivity of less than 0.1 W/m·K, an oil absorption rate of 0.1 ml/g or below, a porosity of at least 90% when mixed with a resin, and a particle distribution coefficient of variation (CV value) of 10% or below. Further provided are a composition comprising the hollow silica particles, and a transparent thermal insulation sheet which has a visible light transmittance of at least 70%, a thermal conductivity of less than 0.1 W/m·K, and a filling rate of particles of 30-80%.