Abstract: A learning effect estimation apparatus includes a model storage memory storing a model that takes learning data as input, the learning data being data on learning results of users and being assigned with categories for different learning purposes. There is a correct answer probability generation unit that inputs the learning data to the model to generate the correct answer probability of each of the categories; a correct answer probability database that accumulates time-series data of the correct answer probability for each of the users; and a comprehension and reliability generation unit that acquires range data, the range data being data specifying a range of categories for estimating a learning effect for a specific user, and generates a comprehension.

Abstract: Provided is a composition capable of forming a cured product having excellent adhesion to a substrate, hardness, scratch resistance, and chemical resistance. The composition of the present disclosure includes a polyol compound (A) and an isocyanate compound (B), the polyol compound (A) containing a compound (a1) having a number average molecular weight calibrated with polystyrene standards of less than 800 and being represented by Formula (1), where R1 to R3 are a group represented by Formula (1a); and the isocyanate compound (B) containing a compound (b) represented by Formula (2), where L1 to L3 are a hydrogen atom, an NCO group, or an alkyl group having from 1 to 10 carbon atom(s) and having a group represented by Formula (2?).

Abstract: A pneumatic tire comprises a first sound damper fixed to a tire inner surface and being made of a sponge material; a second sound damper disposed on a tire internal space side of the first sound damper, and being made of a sponge material; and a communication device retained between the first sound damper and the second sound damper. The second sound damper has a hardness in a range of greater than 25N and no greater than 55N. The first sound damper has a hardness in a range of no less than 25N and less than 55N. The hardness of the second sound damper is greater than the hardness of the first sound damper. The hardness is measured in accordance with the Method A in Section 6.4 of the test methods as defined under the Hardness Tests in Section 6 of JIS K6400-2 (2012).

Abstract: Provided is a composition capable of forming a cured product excelling in adhesion to a substrate, hardness, scratch resistance, and chemical resistance. The composition of the present disclosure contains a polyol compound (A) and an isocyanate compound (B) The polyol compound (A) includes a compound (a1) represented by Formula (1) below, where R1 to R3 each are a group represented by Formula (1a), the compound (a1) having a number average molecular weight (calibrated with polystyrene standard) of 800 or greater. The isocyanate compound (B) includes a polyisocyanate compound having an isocyanurate skeleton.

Abstract: A tire according to the present disclosure includes a sound absorber on an inner surface of the tire, and a portion or all of the sound absorber is orange.

Abstract: To provide a disc brake having a planetary gear reduction mechanism that may be satisfactory costly and achieve improved reliability, a planetary gear reduction mechanism of a disc brake according to the present disclosure includes a sun gear having an input gear portion to which rotation from a motor is transmitted and an output gear portion extending axially from a radial central region of the input gear portion, a plurality of planetary gears configured to mesh with the output gear portion of the sun gear, and an internal gear configured to mesh with each planetary gear, and the internal gear has a cylindrical support portion configured to rotatably support the sun gear. Accordingly, at the time of assembly, the axis of the sun gear and the axis of the internal gear may be arranged substantially concentrically, which may result in improved reliability and cost satisfaction.

Abstract: Disclosed is a tire including: at least one pin protruding from an inner circumferential surface of a tread portion of the tire toward a tire radial direction inner side; and a noise damper caught by the at least one pin, wherein the at least one pin has a distal end with a diameter smaller than that of portions other than the distal end.

Abstract: A pneumatic tire in accordance with the present disclosure comprises a first sound damper fixed to a tire inner surface and being made of a sponge material; a second sound damper disposed on a tire internal space side of the first sound damper, and being made of a sponge material; and a communication device retained between the first sound damper and the second sound damper, wherein the second sound damper has a hardness greater than a hardness of the first sound damper.

Abstract: Provided is a resin composition including carbon fibers and a thermoplastic resin, in which the carbon fibers have a tensile elastic modulus E of 350 to 500 GPa, and the tensile elastic modulus E (GPa) and a loop fracture load A (N) satisfy the relationship of A??0.0017×E+1.02. This resin composition not only has a high moldability into a member of a complex shape by injection molding, but also can yield a molded article having excellent flexural modulus and excellent impact characteristics.

Abstract: Provided are a decorative film including a reflective layer which consists of a dielectric multi-layer film and develops a color due to an optical interference or a structural color, in which the dielectric multi-layer film has a plurality of regions having different reflection performances in an in-plane direction, at least one of the plurality of regions is a region having a specular reflectivity, and at least another one of the plurality of regions is a region having a diffuse reflectivity; and a molded product and an electronic device using the decorative film.

Abstract: In an LC/MS/MS analysis: injecting a sample into a passage leading to a column group provided in a liquid chromatograph, the column group including a plurality of columns serially connected to each other and packed with different kinds of packing materials; supplying an eluant to one or a plurality of columns including a column located most downstream, to separate a portion of the target components in the sample in the one or plurality of columns, and sequentially elute those components from the most downstream column to perform mass spectrometry; and supplying a different eluant to one or a plurality of columns including the most downstream column, to separate at least a portion of the target components which stayed uneluted in the one or plurality of columns in the first analysis step, and sequentially elute those components from the most downstream column to perform mass spectrometry.

Abstract: A pneumatic tire of the present disclosure includes: a pair of bead cores embedded in a pair of bead portions, the pair of bead cores each including a pair of small bead cores divided in a tire width direction; and a carcass including one or more carcass plies, the carcass toroidally straddling between the pair of bead cores with end portions of the carcass each sandwiched between the pair of small bead cores and engaged with the small bead cores, in which a sound control body is disposed on an inner surface of the tire in the pair of bead portions.

Abstract: A tire anti-theft system includes a transmitter attached to a tire and configured to transmit tire ID information; a first database configured to store vehicle ID information and tire ID information of a tire mounted on the vehicle; a second database configured to store the tire ID information and tire status information indicating whether or not the tire identified with the tire ID information is stolen tire; and a vehicle control apparatus, in which the vehicle control apparatus includes a reader configured to perform near field communication with the transmitter attached to the tire mounted on a vehicle to be controlled and acquire the tire ID information, and a controller configured to, in a case where the reader acquires the tire ID information, restrict operation of the vehicle to be controlled if information indicating that the tire is stolen tire is stored in association with the tire ID information.

Abstract: A fiber-reinforced resin hollow body includes an axial-direction fiber layer containing reinforcing fibers aligned parallel to an axial direction of the hollow body, and a non-axial-direction fiber layer provided on top of at least one of an internal and an external side of the axial-direction fiber layer, and containing reinforcing fibers oriented in a direction different from the alignment direction of the axial-direction fiber layer. The non-axial-direction fiber layer includes one or more peripheral-direction fiber layers containing reinforcing fibers aligned parallel to a peripheral direction of the hollow body, and one or more non-aligned fiber layers containing reinforcing fibers not aligned in a specific direction.

Abstract: A composition with an excellent cycle capacity retention rate at high temperatures is provided. According to the present invention, a composition comprising a graft copolymer, wherein the graft copolymer has a stem polymer and a plurality of branch polymers, the stem polymer has a polyvinyl alcohol structure, each of a first monomer unit and a second monomer unit is included in at least one of the plurality of branch polymers, the second monomer unit is different from the first monomer unit, a glass transition temperature of the composition is 260K to 365K is provided.

Abstract: The present invention provides a slurry having excellent stability and a composition for a positive electrode capable of producing a battery having excellent rate characteristics. According to the present invention, a composition comprising a graft copolymer is provided. The graft copolymer has a stem polymer and a plurality of branch polymers, the stem polymer has a polyvinyl alcohol structure, each of a first monomer unit and a second monomer unit is included in at least one of the plurality of branch polymers, the first monomer unit is a (meth) acrylonitrile monomer unit and/or a (meth)acrylic acid monomer unit, and the second monomer unit has an ether structure.

Abstract: A composition serving as a binder with well-balanced peel strength, high-rate discharge capacity retention ratio, and penetration resistance, a slurry for positive electrode, and a secondary battery using the composition is provided. According to the present invention, a composition containing a graft copolymer is provided. The graft copolymer has a stem polymer and a plurality of branch polymers, the stem polymer has a polyvinyl alcohol structure, each of a first monomer unit and a second monomer unit is included in at least one of the plurality of branch polymers, the second monomer unit is different from the first monomer unit, when a content of the polyvinyl alcohol structure in the composition is CPVA % by mass and a total content of the first monomer unit and the second monomer unit in the composition is CM % by mass, the ratio of the content of the polyvinyl alcohol structure to the total content of the first monomer unit and the second monomer unit (CPVA/(CM+CPVA)) is 0.05 to 0.

Abstract: An information presentation system includes an information presentation apparatus, a transmitter attached to a tire and configured to transmit tire ID information for identifying the tire, and a database configured to store tire ID information of tires which are genuine products, and the information presentation apparatus includes a reader configured to perform near field communication with the transmitter, to acquire the tire ID information transmitted by the transmitter, and a controller configured to cause an information presenter to present information indicating that the tire identified with the tire ID information is a genuine product in a case where the tire ID information is stored in the database, and/or cause the information presenter to present information indicating that the tire identified with the tire ID information is a counterfeit product in a case where the tire ID information is not stored in the database.

Abstract: Provided is a polyester polyol that can be used for forming a polyurethane excelling in durability and solvent resistance. A polyester polyol of the present invention is represented by Formula (1) and has a molecular weight distribution of less than 1.2: In Formula (1), R1 and R2 represent, identically or differently a divalent hydrocarbon group, and n is an integer. R3 to R7 represent, identically or differently a hydrogen atom, a monovalent hydrocarbon group, or a group represented by Formula (2): In Formula (2), m and s represent, identically or differently an integer of 1 or greater. 2m occurrences of R8 represent, identically or differently a hydrogen atom, an alkyl group, or an alkoxy group.

Abstract: A position detection apparatus configured to detect a position on a movement surface of a mounted object having the position detection apparatus mounted thereon, includes a moved amount detector configured to detect an amount of movement on the movement surface; a posture detector configured to detect at least a posture of the mounted object on the movement surface; and a position calculator configured to calculate the position of the mounted object, based on the amount of movement and the posture.