Abstract: Disclosed is a product designing system for designing a given product while setting a design parameter value for each of a plurality of design parameters of the product each contributing to noise and vibration characteristics of an installation base for the product.

Abstract: The present invention relates to an epoxy resin composition comprising a polyphenylene ether having a number average molecular weight of 1,000, to 4,000 and containing components having a molecular weight of 20,000 or more in an amount of substantially 20% or less, and an epoxy resin. The present invention further relates to an epoxylated polyphenylene ether resin obtained by reacting a phenolic hydroxyl group of a polyphenylene ether having a number average molecular weight of 1,000 to 4,000 with an epoxy group of an epoxy compound or an epoxy resin.

Abstract: Embodiments of the present invention provide a method and a system for generating optimal feedforward signal for the seek control to suppress the RTV (Random Transient Vibrations) and the seek acoustic noise. One aspect is directed to a method of providing a revised feedforward signal using an adaptive filter in a feedforward control system for controlling an actuator to move a head to seek a track and settle on the track of a disk in a disk drive apparatus. The method comprises performing a seek operation of the head using an initial feedforward signal; obtaining an error signal at settling after performing the seek operation; determining filter characteristics of the adaptive filter to minimize the error signal; and implementing the adaptive filter having the determined filter characteristics in the feedforward control system to produce a revised feedforward signal for controlling the actuator for moving the head in the disk drive apparatus.

Abstract: The present invention relates to an oxetane compound containing a (meth)acryloyl group represented by formula (1) having a high copolymerizability with compounds containing a (meth)acryloyl group, and to a production method of an oxetane compound containing a (meth)acryloyl group which is characterized by reacting an isocyanate compound having a (meth)acryloyl group represented by formula (5) with an oxetane compound containing a hydroxyl group represented by formula (6). (In the formula, R1 represents a hydrogen atom or a methyl group, A represents —OR2— or a bond, R2 represents a divalent hydrocarbon group which may contain an oxygen atom in the main chain, R3 represents a linear or branched alkylene group having 1 to 6 carbon atoms, and R4 represents a linear or branched alkyl group having 1 to 6 carbon atoms.

Abstract: Purine nucleotide derivative disodium crystals having a minimized amount of remaining alcohol such as methanol, ethanol or a mixture thereof are produced by overdrying purine nucleotide derivative disodium crystals containing the alcohol; and bringing the overdried purine nucleotide derivative disodium crystals into contact with an aqueous solution containing a hydrophilic organic solvent to control the humidity of the purine nucleotide derivative disodium crystals under a high humidity condition.

Abstract: A vehicle body floor structure is provided with a floor, a side sill extendedly arranged at a side of the floor and in a longitudinal direction of a vehicle body to have a closed section, a pair of floor cross members extendedly arranged on the floor in a widthwise direction of the vehicle body, so as to face with each other in the longitudinal direction of the vehicle body, and a first reinforcing member, provided between the pair of floor cross members in the longitudinal direction of the vehicle body and within the closed section of the side sill, to exhibit property allowing a dimensional condition thereof to be maintained against a side collision load.

Abstract: A valve device is provided, by which a reverse flow can be avoided without being restricted by pipe arrangement and without bending a primary piping, thereby preventing a defective operation due to a dynamic pressure from occurring. An inlet side inner passage includes a bent part (formed with an inlet side lateral inner passage 21 and the inlet side longitudinal inner passage 22) in a valve housing 11, that is, the inner passage formed in the valve housing 11 takes charge of such a bent part required in a primary piping to avoid a reverse flow.

Abstract: A process for producing a lower aliphatic carboxylic acid alkenyl, comprising reacting a lower olefin, a lower aliphatic carboxylic acid and oxygen in a gas phase in the presence of a catalyst comprising a support having supported thereon a catalyst component containing a compound containing alkali metal and/or alkaline earth metal, an element belonging to Group 11 of the Periodic Table or a compound containing at least one of these elements, and palladium, wherein the outflow ratio of the compound containing alkali metal and/or alkaline earth metal is from 1.0 (10?5 to 0.01%/h.

Abstract: In conventional magnetic disk drives where stream data are treated, seek operations are performed at unnecessarily high speeds. This put the magnetic disk drives at a disadvantage in suppressing noise, reducing power consumption, and lowering the costs of actuator components. In one embodiment of the invention, a magnetic disk drive comprises a magnetic disk medium; a magnetic head; a head actuator to move the magnetic head relative to the magnetic disk medium; and a controller configured to control the head actuator to move the magnetic head to record data to and reproduce data from the magnetic disk medium. The controller is configured to control the magnetic head to record stream data on the magnetic disk medium in such a manner that the stream data is recognizable as stream data. The controller is configured to detect a situation in which two or more stream data are to be recorded or reproduced concurrently so as to set a slower seek operation mode.

Abstract: In a synchronous multi-port bank memory, registers/buffers receive a read/write signal and an address signal from each of external ports, receive and send a data signal to and from each of the external ports, and receive and send a port block signal. An access conflict management circuit receives the address signals from the registers and buffers and generates the port block signal when an access conflict to the bank occurs. A switching network receives the read/write signal and the address signal from the registers/buffers and generates a bank selection signal when no port block signal is received, so as to activate the selected bank. Thus, memory access cycle time is shortened. A synchronous 1-port bank memory is also constructed similarly.

Abstract: A system is disclosed which allows communication between various kinds of languages. The conversion processing portion (300) rewrites components of the representation in the natural language constructing given natural language representation to universal language elements corresponding thereto in the universal language dictionary (210). The conversion processing portion (300) joins multiple rewritten universal language elements by applying the rewriting rules (220) in accordance with an order in universal language element and creates representation in universal language, which is represented in the binary relation. A reverse-conversion processing portion (350) resolves representation in universal language represented in the binary relation to universal language elements constructing joins therein with reference to the rewriting rules (220) in accordance with rules for representation in the binary relation, which are included in the rules.

Abstract: A process for producing a lower aliphatic carboxylic acid alkenyl, comprising reacting a lower olefin, a lower aliphatic carboxylic acid and oxygen in a gas phase in the presence of a catalyst comprising a support having supported thereon a catalyst component containing a compound containing alkali metal and/or alkaline earth metal, an element belonging to Group 11 of the Periodic Table or a compound containing at least one of these elements, and palladium, wherein the conversion of the lower aliphatic carboxylic acid is 80% or less or the concentration of the lower aliphatic carboxylic acid at the reactor outlet is 0.5 mol % or more.

Abstract: In seek control for a head of a rotary recorder/reproducer, the seek time is reduced with noise reduced while utilizing a driving force of an actuator effectively. In one embodiment, when a microprocessor generates a control signal for a drive current given to an actuator for head seek, a signal generator generates a prespecified acceleration allowing for the allowable maximum acceleration when the actuator is accelerated, a prespecified deceleration signal allowing for the allowable maximum deceleration when the actuator is decelerated, and a zero level signal when the actuator is settled. Switching from deceleration to settling is performed at a point of time computed by the microprocessor as a time point when settling is to be started so that the head may reach a target position within the shortest period of time.

Abstract: BiFeO3 precursor solution is coated on the surface of an underlying member. Teat treatment is performed after the coating to form a dielectric film. The dielectric film is heated in a non-oxidizing atmosphere to crystallize the dielectric film. With this method, a ferroelectric material can be obtained which contains constituent elements of Bi, Fe and O and has crystal lattice of a tetragonal or orthorhombic system.

Abstract: Embodiments of the present invention provide a method and a system for generating optimal feedforward signal for the seek control to suppress the RTV (Random Transient Vibrations) and the seek acoustic noise. One aspect is directed to a method of providing a revised feedforward signal using an adaptive filter in a feedforward control system for controlling an actuator to move a head to seek a track and settle on the track of a disk in a disk drive apparatus. The method comprises performing a seek operation of the head using an initial feedforward signal; obtaining an error signal at settling after performing the seek operation; determining filter characteristics of the adaptive filter to minimize the error signal; and implementing the adaptive filter having the determined filter characteristics in the feedforward control system to produce a revised feedforward signal for controlling the actuator for moving the head in the disk drive apparatus.

Abstract: A curable composition comprising: (A) a hydrocarbon compound having a plurality of carbon-carbon double bonds, and (B) a carbonaceous material. The hydrocarbon compound may preferably be 1,2-polybutadiene. The curable composition may be used for a fuel cell separator.

Abstract: A polymerizable compound represented by formula (1): wherein each R1 independently represents at least one organic residue selected from the group consisting of alkylene groups, branched alkylene groups, cycloalkylene groups and arylene groups, R2 represents an organic residue derived from an alcohol compound, a phenol compound or a carboxylic acid compound, n represents an integer of 0 to 20, a production process of the polymerizable composition, a composition using the polymerizable compound, a cured product obtained by curing the composition and a production process of the cured product. The polymerizable compound exhibits a good adhesive property to a substrate such as glass and is imparted with radical polymerizability to enable heat curing and/or active energy ray curing.

Abstract: This invention is to provide a polymerizable composition having excellent curability and surface hardness, and a cured product thereof. A novel fumarate derivative having two or more fumarate groups within one molecule and ensuring copolymerizability with the terminal alkenyloxy group, a method for producing the derivative, a polymerizable composition containing the derivative, and a cured product thereof are provided.

Abstract: A process for producing allyl alcohol, comprising a step (1) of producing allyl acetate from propylene, acetic acid and oxygen in a gas phase in the presence of a catalyst comprising a support having supported thereon a catalyst component containing a compound containing alkali metal and/or alkaline earth metal, an element belonging to Group 11 of the Periodic Table or a compound containing at least one of these elements, and palladium, and a step (2) of hydrolyzing the ally acetate obtained in the step (1) using an acid catalyst to produce allyl alcohol, wherein the conversion of the starting material acetic acid in the step (1) is 60% or more.

Abstract: Disclosed is an automobile door structure supported on an automobile body and adapted to be engaged with and disengaged from said automobile body through a door latch, which comprises an outer segment 2, and an inner segment 6, 8 disposed on the side of an automobile cabin relative to the outer segment 2 and provided with the door latch. The inner segment includes enhancement means 50 for enhancing an acoustic conversion efficiency of a vibration having a specific low frequency among vibrations of the door latch generated during door closing. The automobile door structure of the present invention can enhance a low-frequency sound capable of giving the impression of dignity on an occupant.