Abstract: The learning device 80 includes a first learning means 81 and a second learning means 82. The first learning means 81 generates a skill state sequence representing time-series changes in a learner's skill state by machine learning using learner's learning results. The second learning means 82 learns a model in which problem characteristics that represent characteristics of problems used by a learner for learning, user characteristics that represent characteristics of the learner, and time information that represents time the learner solved the problem are explanatory variables, and the learner's skill state represented by the skill state sequence is an objective variable.

Abstract: The output means 81 outputs a threshold value indicating a proficiency level of a skill required to answer a target question in association with the proficiency level of the skill that the learner is assumed to have.

Abstract: A learning support device acquires sound data; extracts a letter string representing content of an utterance for each utterance by a learner included in the sound data; identify, for each utterance, a learner who has made the utterance from among a plurality of learners based on the sound data; identify emotion information representing an emotion of the learner in the utterance, based on at least one of the sound data and data of a moving image captured together with the sound data; and outputs, for each group to which learner belongs, the plurality of pieces of emotion information in time series order with being associated with the plurality of letter strings.

Abstract: A scoring device includes a classifying unit and an adding unit. The classifying unit classifies answer data into a plurality of subsets. The adding unit adds a scoring criterion to be used in scoring the answer data based on a result of classifying by the classifying unit.

Abstract: [Problem] To provide a fire-extinguishing liquid agent in which a fire-extinguishing agent is contained in a desirable balance and is satisfactorily dissolved in a solvent, that is easy to use, and that can be used against normal fires and oil fires, as well as fire-extinguishing equipment loaded with said fire-extinguishing liquid agent. [Solution] A fire-extinguishing liquid agent is sealed in an impact breakable container B that is molded by using a polystyrene resin material in which a general-purpose polystyrene and a styrene-butadiene copolymer are mixed and that has a hand-throwable size, wherein the fire-extinguishing liquid agent is formed: by containing 68-76 parts of sodium bicarbonate (NaHCO3) relative to 100 parts by weight of ammonium chloride (NH4Cl); by being treated by passing through a magnetic field having a magnetic flux density of 3000-10000 G; by being dissolved in hot water (magnetic water) in which the temperature thereof is adjusted to 30-50° C.

Abstract: [Problem] To provide a fire-extinguishing liquid agent in which a fire-extinguishing agent is contained in a desirable balance and is satisfactorily dissolved in a solvent, that is easy to use, and that can be used against normal fires and oil fires, as well as fire-extinguishing equipment loaded with said fire-extinguishing liquid agent. [Solution] A fire-extinguishing liquid agent is sealed in an impact breakable container B that is molded by using a polystyrene resin material in which a general-purpose polystyrene and a styrene-butadiene copolymer are mixed and that has a hand-throwable size, wherein the fire-extinguishing liquid agent is formed: by containing 68-76 parts of sodium bicarbonate (NaHCO3) relative to 100 parts by weight of ammonium chloride (NH4Cl); by being treated by passing through a magnetic field having a magnetic flux density of 3000-10000 G; by being dissolved in hot water (magnetic water) in which the temperature thereof is adjusted to 30-50° C.

Abstract: The present invention provides a liquid crystalline material having flexibility and/or bendability and a method for preparing the material. The present invention provides a liquid crystalline polyrotaxane consisting essentially of a polyrotaxane, wherein the polyrotaxane comprises a linear molecule, a cyclic molecule(s) in which the linear molecule is included in cavity (cavities) of the cyclic molecule(s) in a skewered manner, and capping groups, each of which locates at each end of the linear molecule in order to prevent the dissociation of the cyclic molecule (s); the cyclic molecule of the liquid crystalline polyrotaxane comprises a mesogenic group, e.g., biphenyl groups represented by following formulae (1) to (3), and the liquid crystalline polyrotaxane has liquid crystalline property.

Abstract: In the structure of the rotary member fixing the windmill, propeller, fan, impeller and so forth on the rotary axis of the motor, having the foresaid tubular boss located at the center of the rotary member, having the bracket that is lid of the foresaid boss, having the stopper arranged around internal circumference of the foresaid boss, having the elastic member at least, and the foresaid stopper being almost bar-shape, the foresaid penetrating axis penetrating to cross bar-like stopper, and there is the holding hole to hold the top of the foresaid rotary axis. In the meantime, the spiral first groove to build-in the foresaid elastic member around the external circumference of the holding hole is prepared, and the spiral second groove to build-in the foresaid elastic member around the external circumference of the holding hole is prepared, the foresaid stopper is arranged nearby the foresaid elastic member.

Abstract: An apparatus capable of obtaining a result which is desired by an operator, canceling a result when an erroneous operation is performed and facilitating creation of a mathematical expression is provided. This apparatus comprises an indicating mechanism for outputting a position in a mathematical expression and a part in a mathematical expression in accordance with an operation of the operator; an operating mechanism for generating a plurality of proposed transformation results of the mathematical expressions based on the position and the part outputted from the indicating mechanism, and a selecting mechanism for selecting one from a plurality of the proposed transformation results in accordance with an operation of the operator.

Abstract: A capacitive pressure sensor includes lower and upper wafers, a stationary electrode, first and second pads, a movable electrode, and a plurality of extraction electrodes. The lower wafer has a first capacitor forming portion and a first pad forming portion communicating with it. The upper wafer has a second capacitor forming portion, constituting a capacitor chamber together with the first capacitor forming portion, and a second pad forming portion communicating with it. The stationary electrode is formed on a bottom surface of the first capacitor forming portion. The first pad is formed on a bottom surface of the first pad forming portion and connected to the stationary electrode through a first interconnection. The movable electrode is formed on a bottom surface of the second capacitor forming portion to oppose the stationary electrode. The second pad is formed in the second pad forming portion and connected to the movable electrode through a second interconnection.

Abstract: The invention provides a novel preparation process of a polycondensation type polymer, an excellent polymer which is represented by lactic acid and the preparation process of the polymer, a polycondensation agent used for the preparation process, and an intermediate. Specifically, the invention provides a preparation process of the polycondensation type polymer, for example, polyamide, polyimide, polythioester and polyester, comprising bonding a carboxyl group comprising compound with an active hydrogen group comprising compound in the presence of haloiminium salt. The invention provides excellent polylactic acid having a controlled D/L-isomer ratio in the repeating structural units and preparation process of polylactic acid, and further provides a haloiminium salt compound used for the preparation process and an intermediate compound of acid chloride.

Abstract: The present invention relates to a polyimide based resin composition comprises 1 to 50 parts by weight of polyetherimide for 100 parts by weight a resin composition comprising 50 to 99 parts by weight of polyarylether ketone and 50 to 1 parts by weight of polyimide having specific structural units.The polyimide based resin compositions have excellent fatigue characteristics and creep resistance and are expected widely to apply in field of machine and automobile parts which is required permanence for mechanical strength.

Abstract: A polyimide comprising a requisite structural unit having one or more recurring structural units of the formula: ##STR1## such as the structural units of the formula ##STR2## The polyimide can have an extremely low dielectric constant and is colorless, transparent and excellent in processability and heat resistance, and also provides an aromatic diamine which is useful as a raw material monomer of the polyimide or a raw material of other various engineering plastics.

Abstract: Disclosed are a novel aromatic diamine; a polymide comprising 1,3-bis(3-aminobenzoyl)benzene or 4,4'-bis(3-aminobenzoyl)biphenyl as a diamine component and having recurring structural units represented by the formula (III): ##STR1## wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having from 2 to 27 carbon atoms, alicyclic radical, monoaromatic radical, condensed polyaromatic radical, and noncondensed aromatic radical connected each other with a direct bond or a bridge member, and X is a divalent radical of ##STR2## and a polyimide having a terminal aromatic group which is essentially unsubstituted or substituted with a radical having no reactivity with amines or dicarboxylic acid anhydrides or a composition comprising said polyimide.

Abstract: A microcomputer includes a central processing unit (CPU) and an electrically erasable and programmable nonvolatile memory (EEPROM) fabricated on a single semiconductor chip. When CPU issues a data write request to EEPROM, a data write control circuit is initiated to perform a data write-processing in which data in an address of EEPROM selected by CPU is first erased and thereafter data from CPU is written into that selected address. There is further provided an over-written detection circuit for detecting that CPU issues another data write request to EEPROM while the data write control circuit is performing the data write-processing and for producing an over-write detection signal to CPU.

Abstract: A novel aromatic diamine; a polyimide comprising 1,3-bis(3-aminobenzoyl)benzene or 4,4'-bis(3-aminobenzoyl)biphenyl as a diamine component and having recurring structural units represented by the formula (III): ##STR1## wherein R is a tetravalent radical selected from the group consisting of an aliphatic radical having from 2 to 27 carbon atoms, alicyclic radical, monoaromatic radical, condensed polyaromatic radical, and noncondensed aromatic radical connected each other with a direct bond or a bridge member, and X is a divalent radical of ##STR2## and a polyimide having a terminal aromatic group which is essentially unsubstituted or substituted with a radical having no reactivity with amines or dicarboxylic acid anhydrides or a composition comprising said polyimide.