Abstract: A pyridine-based compound containing an isoxazoline ring represented by Formula 1 or an agrochemically acceptable salt thereof can be used as a herbicide. A method of preparing the pyridine-based compound containing an isoxazoline ring represented by Formula 1 includes reacting a compound represented by Formula 2 with a compound represented by Formula 3.

Abstract: An encryption apparatus and method for generating a ciphertext from an input plaintext of the same length as the ciphertext by parallel processing of the input signal. Since a non-delayed signal is synchronized to a delayed signal, an accurate ciphertext is produced. Therefore, the encryption speed is increased, the number of devices for timing synchronization is reduced, an encryption system is stabilized, and production cost is reduced.

Abstract: An enciphering apparatus and method divide an input bit stream with length 2n into first and second sub-bit streams with length n, perform an enciphering procedure, and output an enciphered bit stream with length 2n in a mobile communication system. A first encipherer enciphers the first sub-bit stream by code KLi to output a firstbit stream with length n, or enciphers a second enciphered bit stream by code KLi to output a third bit stream with length n. A second encipherer enciphers the first bit stream by code KOi and code KIi to output a fourth bit stream with length n, or enciphers the first sub-bit stream by code KOi and code KIi to output the second enciphered bit stream with length n, the second encipherer including two sub-enciphering blocks and register. Registers match synchronization of an operation delay caused by the second encipherer for the second sub-bit stream.

Abstract: An encryption apparatus and method for generating a ciphertext from an input plaintext of the same length as the ciphertext by parallel processing of the input signal. Since a non-delayed signal is synchronized to a delayed signal, an accurate ciphertext is produced. Therefore, the encryption speed is increased, the number of devices for timing synchronization is reduced, an encryption system is stabilized, and production cost is reduced.