Abstract: A power supply circuit that outputs an electric power that is input from a vibration-driven energy harvesting element to an external load, includes: a negative half-wave rectifying circuit that half-wave rectifies an alternating current power that is input from the vibration-driven energy harvesting element, into a negative voltage output; an inverting chopper circuit that inverts and outputs the negative voltage output which is output from the negative half-wave rectifying circuit, into a positive voltage output.

Abstract: A vibration-driven energy harvesting element that outputs an alternating current power from an output line, due to vibration from outside includes: an intermediate electrode that is not connected to the output line; a plurality of electret electrodes, each electret electrode being arranged to face the intermediate electrode and having an electret on at least a part of a surface of the electret electrode on a side facing the intermediate electrode; a holding unit that holds the intermediate electrode and the plurality of electret electrodes such that the intermediate electrode and the plurality of electret electrodes can vibrate with respect to each other; and a charge injector that injects a charge having characteristics opposite to a charge of the electrets formed in the surfaces of the plurality of electret electrodes, to the intermediate electrode.

Abstract: A rubber additive composition may be capable of producing a rubber composition having well-balanced strength. Such rubber additive compositions may include: (A) anion-modified cellulose and (B) a hydrophobizing agent, wherein the hydrophobizing agent (B) includes at least one selected from the group consisting of (B1) a polyether amine having a primary amino group at an end of a polyether skeleton and (B2) an amine compound having a hydrocarbon group with a carbon number of 3 to 50 or a quaternary ammonium salt having a hydrocarbon group with a carbon number of 3 to 50.

Abstract: A power supply circuit that outputs an electric power input from a vibration-driven energy harvesting element to an external load includes a rectifying circuit that rectifies an alternating current power input from the vibration-driven energy harvesting element; a first capacitor that accumulates a power output from the rectifying circuit; a chopper circuit that has a switching element controlling a chopper timing and has an input terminal connected to the first capacitor; and a control signal generation unit that supplies a control signal to the switching element, wherein: the control signal generation unit generates the control signal without referring to a voltage of the first capacitor.

Abstract: A power storage material is made by using a fiber material of cellulose molecules obtained from wood, plant fibers (pulp), and the like, and capable of storing electric power of direct current and alternating current, and an ultra power storage body has the power storage material. A power storage material includes a fiber mainly including a fiber derived from at least any one of wood, plant fibers (pulp), animals, algae, microorganisms, and microbial products, and having a large number of recesses and protrusions on a surface. The fiber is preferably crystallized/amorphous fibers, is preferably an amorphous fiber having an atomic vacancy, and preferably has a specific surface area of 10 m2/g or more. Preferably, the large number of recesses and protrusions have a diameter of 1 nm to 500 nm.

Abstract: The present invention intends to provide an acid type carboxylated cellulose nanofiber having a high viscosity in a low shear region, or to provide an acid type carboxylated cellulose nanofiber having a very short fiber length, and the acid type carboxylated cellulose nanofiber has a carboxy group at least in part of a constituent unit constituting a cellulose molecular chain, wherein a viscosity of water dispersion with a content from 0.95 to 1.05% by mass is 400 Pa·s or higher at a shear velocity from 0.003 to 0.01 s?1 at 30° C., or an average fiber length is from 50 to 500 nm and a ratio of fibers having a fiber length of 300 nm or shorter is 50% or higher.

Abstract: In order to respond flexibly to various processing modes, such as forming curved surface shapes, when cutting a workpiece using a wire saw, this wire saw device (1) is provided with: a single robot arm (2) that is capable of moving freely by means of multi-axis control; a wire saw unit (3) that is detachably connected to the robot arm (2) via a tool changer (7); a wire (8) that spans a plurality of pulleys supported within the wire saw unit (3); and a workpiece cutting zone (20) that is established between the pulleys. The workpiece is cut to a prescribed shape by moving the robot arm (2) in a preset direction while running the wire (8) of the wire saw unit (3) and pressing the wire (8) against the supported workpiece.

Abstract: The vibration-driven energy harvester includes: a first electrode; a second electrode facing the first electrode; a holder holding the first electrode and the second electrode so as to be movable relative to each other; a half-wave rectifier electrically connected to the first and the second electrodes that causes current flowing from the first electrode to the second electrode to flow to an output unit, and cuts off current flowing from the second electrode toward the first electrode; and a second rectifying element electrically connected to the first and the second electrodes that allows the current flowing from the second electrode to the first electrode and blocks the current flowing from the first electrode to the second electrode, wherein: the first electrode has a positively charged electret in a surface facing the second electrode, or the second electrode has a negatively charged electret in a surface facing the first electrode.

Abstract: A vibration-driven energy harvesting device includes: a first vibration-driven energy harvesting assembly constituted with a first fixed comb tooth portion and a first movable comb tooth portion that are interdigitated with each other; a second vibration-driven energy harvesting assembly constituted with a second fixed comb tooth portion and a second movable comb tooth portion that are interdigitated with each other; a first output electrode connected to the first vibration-driven energy harvesting assembly; and a second output electrode connected to the second vibration-driven energy harvesting assembly, wherein: an output of the first vibration-driven energy harvesting assembly is different from an output of the second vibration-driven energy harvesting assembly.

Abstract: A method for producing a metallic green compact 61 relates to a method for producing the green compact 61 having at least one recess 62, including a step of subjecting a raw material powder filled in a resin mold 1 to cold isostatic pressing while placing a resin core material 11 having a shape corresponding to the recess 62 at a position corresponding to the recess 62 in the resin mold 1.

Abstract: A speech synthesis model training device includes one or more hardware processors configured to perform the following. Storing, in a speech corpus storing unit, speech data, and pitch mark information and context information of the speech data. From the speech data, analyzing acoustic feature parameters at each pitch mark timing in pitch mark information. From the acoustic feature parameters analyzed, training a statistical model which has a plurality of states and which includes an output distribution of acoustic feature parameters including pitch feature parameters and a duration distribution based on timing parameters.

Abstract: An object of the present invention is to provide a rubber composition including a rubber component and cellulose-based fibers and having excellent strength. Namely, the present invention provides a rubber composition including Component (A): a modified cellulose nanofiber, Component (B): a surfactant, Component (C): a polyvalent metal, and Component (D): a rubber component and a method for producing the same. Component (A) preferably includes a carboxy group-containing cellulose nanofiber such as an oxidized cellulose nanofiber and a carboxymethylated cellulose nanofiber.

Abstract: A speech processing device includes a hardware processor configured to receive input speech and extract speech frames from the input speech. The hardware processor is configured to calculate a spectrum parameter for each of the speech frames, calculate a first phase spectrum for each of the speech frames, calculate a group delay spectrum from the first phase spectrum based on a frequency component of the first phase spectrum, calculate a band group delay parameter in a predetermined frequency band from the group delay spectrum, and calculate a band group delay compensation parameter to compensate a difference between a second phase spectrum reconstructed from the band group delay parameter and the first phase spectrum. The hardware processor is configured to generate a speech waveform based on the spectrum parameter, the band group delay parameter, and the band group delay compensation parameter.

Abstract: The present invention aims to provide a rubber composition having sufficient reinforcement and fatigue resistance even when a large strain is applied thereto, and the present invention is to provide a substituted carboxy group-containing modified cellulose nanofiber wherein at least part thereof has at least any one of a substituent represented by Formula (a): —CONH—R1 and a substituent represented by Formula (b): —COO—R1 (in Formulae (a) and (b), R1 is independently a C3-30 hydrocarbon having at least one unsaturated bond), and a rubber composition including the same.

Abstract: A speech processing device of an embodiment includes a spectrum parameter calculation unit, a phase spectrum calculation unit, a group delay spectrum calculation unit, a band group delay parameter calculation unit, and a band group delay compensation parameter calculation unit. The spectrum parameter calculation unit calculates a spectrum parameter. The phase spectrum calculation unit calculates a first phase spectrum. The group delay spectrum calculation unit calculates a group delay spectrum from the first phase spectrum based on a frequency component of the first phase spectrum. The band group delay parameter calculation unit calculates a band group delay parameter in a predetermined frequency band from a group delay spectrum. The band group delay compensation parameter calculation unit calculates a band group delay compensation parameter to compensate a difference between a second phase spectrum reconstructed from the band group delay parameter and the first phase spectrum.

Abstract: In order to respond flexibly to various processing modes, such as forming curved surface shapes, when cutting a workpiece using a wire saw, this wire saw device (1) is provided with: a single robot arm (2) that is capable of moving freely by means of multi-axis control; a wire saw unit (3) that is detachably connected to the robot arm (2) via a tool changer (7); a wire (8) that spans a plurality of pulleys supported within the wire saw unit (3); and a workpiece cutting zone (20) that is established between the pulleys. The workpiece is cut to a prescribed shape by moving the robot arm (2) in a preset direction while running the wire (8) of the wire saw unit (3) and pressing the wire (8) against the supported workpiece.

Abstract: The vibration-driven energy harvester includes: a first electrode; a second electrode facing the first electrode; a holder holding the first electrode and the second electrode so as to be movable relative to each other; a half-wave rectifier electrically connected to the first and the second electrodes that causes current flowing from the first electrode to the second electrode to flow to an output unit, and cuts off current flowing from the second electrode toward the first electrode; and a second rectifying element electrically connected to the first and the second electrodes that allows the current flowing from the second electrode to the first electrode and blocks the current flowing from the first electrode to the second electrode, wherein: the first electrode has a positively charged electret in a surface facing the second electrode, or the second electrode has a negatively charged electret in a surface facing the first electrode.

Abstract: A vibration-driven energy harvesting element that outputs an alternating current power from an output line, due to vibration from outside includes: an intermediate electrode that is not connected to the output line; a plurality of electret electrodes, each electret electrode being arranged to face the intermediate electrode and having an electret on at least a part of a surface of the electret electrode on a side facing the intermediate electrode; a holding unit that holds the intermediate electrode and the plurality of electret electrodes such that the intermediate electrode and the plurality of electret electrodes can vibrate with respect to each other; and a charge injector that injects a charge having characteristics opposite to a charge of the electrets formed in the surfaces of the plurality of electret electrodes, to the intermediate electrode.

Abstract: A power supply circuit that outputs an electric power that is input from a vibration-driven energy harvesting element to an external load, includes: a negative half-wave rectifying circuit that half-wave rectifies an alternating current power that is input from the vibration-driven energy harvesting element, into a negative voltage output; an inverting chopper circuit that inverts and outputs the negative voltage output which is output from the negative half-wave rectifying circuit, into a positive voltage output.

Abstract: A power supply circuit that outputs an electric power input from a vibration-driven energy harvesting element to an external load includes a rectifying circuit that rectifies an alternating current power input from the vibration-driven energy harvesting element; a first capacitor that accumulates a power output from the rectifying circuit; a chopper circuit that has a switching element controlling a chopper timing and has an input terminal connected to the first capacitor; and a control signal generation unit that supplies a control signal to the switching element, wherein: the control signal generation unit generates the control signal without referring to a voltage of the first capacitor.