Abstract: The present disclosure relates to a composition for preventing or treating fibrosis including an inhibitor of cyclin-dependent kinase 17 (CDK17) expression or activity. According to the present disclosure, the inhibitor of CDK17 expression or activity significantly reduces collagen production and cell activity and viability in activated hepatic stellate cells (liver fibrosis cell model), renal tubular epithelial cells (renal fibrosis cell model) in which fibrosis is induced by TGF-? treatment, and alveolar epithelial cells (lung fibrosis cell model) in which fibrosis is induced by TGF-? treatment, indicating that the composition of the present disclosure has an excellent effect in preventing or treating fibrosis.

Abstract: The present invention relates to a high load and high precision polygonal guide, and to a picker actuator using same, wherein the polygonal guide includes: an integrated ball cage designed and formed in a polygon and having a plurality of ball receiving holes formed on each side of the polygonal ball cage for receiving balls; a housing having a polygonal through hole for rolling motion such that, after the balls are inserted into the ball receiving holes formed on each side of the polygonal ball cage, the balls cannot escape from the ball receiving holes; and a guide post inserted and fitted inside the polygonal ball cage into which the balls are inserted and fitted, whereby the guide post or the housing reciprocates in a straight line by the rolling motion of the balls.

Abstract: The present invention relates to a high load and high precision polygonal guide, and to a picker actuator using same, wherein the polygonal guide includes: an integrated ball cage designed and formed in a polygon and having a plurality of ball receiving holes formed on each side of the polygonal ball cage for receiving balls; a housing having a polygonal through hole for rolling motion such that, after the balls are inserted into the ball receiving holes formed on each side of the polygonal ball cage, the balls cannot escape from the ball receiving holes; and a guide post inserted and fitted inside the polygonal ball cage into which the balls are inserted and fitted, whereby the guide post or the housing reciprocates in a straight line by the rolling motion of the balls.

Abstract: A method of compressing digital image data and a device thereof of coding digital image data within constant rate data not deteriorating a resolution of an image without regard to a complexity of digital image data. A format of M.times.N pixel blocks (where M, N are natural numbers) is made from luminance and sub-sampled chrominance signals, and first to fourth edge values TY, TR-Y, TB-Y, Ai respectively from the luminance, sub-sampled signals and the blocks are detected. A quantization scaling factor is determined by normalizing the first edge value, and the number of bits corresponding to the each block is allocated according to the first to fourth edge values. The number of AC (alternating current) factor bits is allocated by subtracting the number of DC (direct current) factor bits of the each block coded by a one-dimensional Huffman coding from the number of the allocation bits.

Abstract: A method and circuit for compensating the vibration of an image by detecting the amount of motion of an input image. A sub-block is extracted from the entire screen and the amount of motion is detected by comparing the extracted sub-block with a sub-block extracted form a previous frame. Thus, the vibration is compensated for in response to a motion detecting value.

Abstract: In an image coding system for coding a digital image signal sequence into a coded signal sequence and transmitting an amount of information of the coded signal at a fixed bit rate, an image coding method for coding the image signal sequence includes the steps of setting an initial quantization step size by calculation of frame information measures (PIM) with respect to an image signal sequence for each frame, segmenting the image signal sequence of each frame into a block signal sequence including a plurality of N.times.