Abstract: For each of N active servers (N being an integer equal to or larger than 2), a management system performs, on at least one of M standby servers (M being an integer equal to or larger than 2), a full test for determining whether a failover is executable by performing a failover from the active server to the standby server, and performs, on at least one of the standby servers that is different from the standby server on which the full test is performed, a simplified test for determining whether the failover is executable without performing the failover from the active server to the standby server, the number of standby servers on which the simplified test is performed being larger than the number of standby servers on which the full test is performed.

Abstract: For each of N active servers (N being an integer equal to or larger than 2), a management system performs, on at least one of M standby servers (M being an integer equal to or larger than 2), a full test for determining whether a failover is executable by performing a failover from the active server to the standby server, and performs, on at least one of the standby servers that is different from the standby server on which the full test is performed, a simplified test for determining whether the failover is executable without performing the failover from the active server to the standby server, the number of standby servers on which the simplified test is performed being larger than the number of standby servers on which the full test is performed.

Abstract: The present invention relates to a method for pre-listening to voice contents. More particularly, the present invention relates to a method for pre-listening to voice contents, which is used in a system for providing voice contents, the method comprising the steps of: displaying a plurality of voice contents in a list form; scrolling a screen such that particular voice contents are located at a selected line; and reproducing a voice of the corresponding voice contents located at the selected line, wherein the voice of the corresponding voice contents is reproduced just by randomly making the selected line pass through the voice contents during the scroll.

Abstract: A lower thread ending region detection apparatus prevents problems associated with false stitchings occurring from inability to detect lower thread's exhaustion during sewing operation. The lower thread ending region detection apparatus comprises: light control unit, which contacts a part of lower thread wound on a thread bobbin and activates or inactivates at least one of the functions of emitting light, reflecting light, passing light and blocking light, due to the effect of the physical movement force generated depending on whether the lower thread of the ending region is unwound; light receiving unit, which receives the light transferred out by the light control unit and outputs a detection signal; and control and notification unit, which analyzes the detection signal output from the light receiving unit to determine whether the lower thread has reached the ending region and outputs the result to the user.

Abstract: A bag for a pant pocket according to the present invention further includes an intermediate pocket that is disposed between the first sheet and the second sheet, with the edge attached throughout the entire section to the second sheet and has at least two or more internal inlets formed in the shape of a through-hole though both sides so that going in and out of an internal space formed by the attachment is possible, in which an internal pocket separate line for attaching the second sheet and the intermediate sheet in the structure of separating the areas including two or more internal inlets, respectively is provided, the edge except the partial section of the first sheet is attached to the intermediate sheet to form the main inlet, and the receiving spaces are more easily used by providing at least two or more separate specific internal pocket spaces in one pocket.

Abstract: A bag for a pant pocket according to the present invention further includes an intermediate pocket that is disposed between the first sheet and the second sheet, with the edge attached throughout the entire section to the second sheet and has at least two or more internal inlets formed in the shape of a through-hole though both sides so that going in and out of an internal space formed by the attachment is possible, in which an internal pocket separate line for attaching the second sheet and the intermediate sheet in the structure of separating the areas including two or more internal inlets, respectively is provided, the edge except the partial section of the first sheet is attached to the intermediate sheet to form the main inlet, and the receiving spaces are more easily used by providing at least two or more separate specific internal pocket spaces in one pocket.

Abstract: The present invention relates to a lower thread ending region detection apparatus (LTERDA) that prevents problems associated with poor quality and re-work resulting from false stitchings due to being unable to detect the exhaustion of the lower thread during the sewing operation.

Abstract: Disclosed is a method for the nitration of 4,6-dihydroxy-2-methylpyrimidine for the synthesis of 4,6-dihydroxy-5,5-dinitro-2-(dinitromethylene)-2,5-dihydropyrimidine which is used as a precursor of 1,1-diamino-2,2-dinitroethylene, one type of explosives. The present invention provides an improved method for the nitration of 4,6-dihydroxy-2-methylpyrimidine, wherein organic solvent is applied in the nitration process of 4,6-dihydroxy-2-methylpyrimidine thereby solving the safety problem while improving the yield of nitration.

Abstract: A method and system for inter-port communication utilizing a multi-port memory device. The memory device contains an interrupt register, an interrupt signal interface (e.g., a dedicated pin), an interrupt mask, and one or more message buffers associated with each port. When a first component coupled to a first port of the memory device wants to communicate with a second component coupled to a second port of the memory device, the first component writes a message to a message buffer associated with the second port. An interrupt in the input register of the second port is set to notify the second component coupled to the second port that a new message is available. Upon receiving the interrupt, the second component reads the interrupt register to determine the nature of the interrupt. The second component then reads the message from the message buffer.

Abstract: A synthesis of an energetic prepolymer used as a high-energy binder for an insensitive and high performance explosive is disclosed. More specifically, provided are a novel compound 2-nitratoethyl oxirane expressed by formula III, a novel compound poly(2-nitratoethyl oxirane) expressed by formula IV, obtained by polymerization of 2-nitratoethyl oxirane used as a monomer and a preparation method thereof. The compound, used as an energetic prepolymer and a monomer for preparation thereof can substitute for existing poly(glycidyl nitrate) (PGN) which has been known to be a promising one having the best performance among existing energetic prepolymers, but which has a problem to be self-decomposed after synthesis of polyurethane elastomer, to solve this problem.

Abstract: A method and system that utilizes a shared nonvolatile memory for initializing multiple processing components in a device. The startup logic and configuration data for processing components within a device is stored in a single nonvolatile memory. Upon receipt of a command to initialize the device, the shared memory system copies the startup logic and configuration data from the nonvolatile memory to a volatile main memory. Then, each processing component accesses the main memory to find its startup logic and configuration data and begin executing. The shared memory system reduces the number of nonvolatile memory components used to initialize multiple processing components.

Abstract: Disclosed is a method for the nitration of 4,6-dihydroxy-2-methylpyrimidine for the synthesis of 4,6-dihydroxy-5,5-dinitro-2-(dinitromethylene)-2,5-dihydropyrimidine which is used as a precursor of 1,1-diamino-2,2-dinitroethylene, one type of explosives. The present invention provides an improved method for the nitration of 4,6-dihydroxy-2-methylpyrimidine, wherein organic solvent is applied in the nitration process of 4,6-dihydroxy-2-methylpyrimidine thereby solving the safety problem while improving the yield of nitration.

Abstract: A multi-port memory device having two or more ports wherein each port may operate at a different speed. The multi-port memory device contains memory banks that may be accessed via the two or more ports. Two clock signals are applied to each port: a system clock and a port clock. The system clock is applied to port logic that interfaces with the memory banks so that the ports all operate at a common speed with respect to the memory banks. The port clock is applied to a clock divider circuit that is associated with each port. The port clock is divided to a desired frequency or kept at its original frequency. Such a configuration allows the ports to operate at different speeds that may be set on a port-by-port basis.

Abstract: A synthesis of an energetic prepolymer used as a high-energy binder for an insensitive and high performance explosive is disclosed. More specifically, provided are a novel compound 2-nitratoethyl oxirane expressed by formula III, a novel compound poly(2-nitratoethyl oxirane) expressed by formula IV, obtained by polymerization of 2-nitratoethyl oxirane used as a monomer and a preparation method thereof. The compound, used as an energetic prepolymer and a monomer for preparation thereof can substitute for existing poly(glycidyl nitrate) (PGN) which has been known to be a promising one having the best performance among existing energetic prepolymers, but which has a problem to be self-decomposed after synthesis of polyurethane elastomer, to solve this problem.

Abstract: Disclosed are novel compounds that can be used as an energetic binder used for improving the performance and the properties of a high explosive, and a preparation method thereof. More specifically, provided are glycidyl dinitropropyl formal of chemical formula IV having a nitro group (—NO2) as an energy group and having no hydrogen bonding to carbon to which the nitro group is binding, poly(glycidyl dinitropropyl formal) of chemical formula V polymerized using the glycidyl dinitropropyl formal as a monomer, and a preparation method thereof.

Abstract: A synthesis of an energetic prepolymer used as a high-energy binder for an insensitive and high performance explosive is disclosed. More specifically, provided are a novel compound 2-nitratoethyl oxirane expressed by formula III, a novel compound poly(2-nitratoethyl oxirane) expressed by formula IV, obtained by polymerization of 2-nitratoethyl oxirane used as a monomer and a preparation method thereof. The compound, used as an energetic prepolymer and a monomer for preparation thereof can substitute for existing poly(glycidyl nitrate) (PGN) which has been known to be a promising one having the best performance among existing energetic prepolymers, but which has a problem to be self-decomposed after synthesis of polyurethane elastomer, to solve this problem.

Abstract: Provided is a novel preparation method of (Z)-7-chloro-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoic acid represented by the following formula (1), a key intermediate of cilastatin used as a supplement to imipenem. The novel preparation method of the invention produces a pure (Z)-7-chloro-((S)-2,2-dimethylcyclopropanecarboxamido)-2-heptenoic acid, a key intermediate of cilastatin, by selective hydrolysis of E isomers.

Abstract: A synthesis of an energetic prepolymer used as a high-energy binder for an insensitive and high performance explosive is disclosed. More specifically, provided are a novel compound 2-nitratoethyl oxirane expressed by formula III, a novel compound poly(2-nitratoethyl oxirane) expressed by formula IV, obtained by polymerization of 2-nitratoethyl oxirane used as a monomer and a preparation method thereof.

Abstract: Disclosed is a trousers pocket. The trousers pocket includes a pocket body, which is formed in a front portion of trousers and extends toward a rear portion of trousers beyond a lateral line, so that items contained in the pocket body are prevented from unintentionally falling out of the pocket body through an inlet. Peripheral portions of the inlet formed by incising the trousers pocket are overlapped and sewn to each other, so the items are prevented from unintentionally falling out of the pocket body without using an additional fastening device for the items.

Abstract: Disclosed are novel compounds that can be used as an energetic binder used for improving the performance and the properties of a high explosive, and a preparation method thereof.