Abstract: Provided are carbon fiber bundles which have high knot strength even if the single fiber fineness is large, and which have excellent handling properties and processability. The carbon fiber bundles have a single fiber fineness of 0.8-2.5 dtex, knot strength of 298 N/mm2 or greater. This method of producing carbon fibers having knot strength of 298 N/mm2 or greater involves a heat treatment step for heat treating, for 50-150 minutes, specific polyacrylonitrile-based precursor fiber bundles described in the description in an oxidizing atmosphere rising in temperature in the temperature range of 220-300° C.

Abstract: According to an embodiment, an information processing device includes one or more processors. The processors are configured to: acquire a plurality of pieces of detection information including detection results at two-dimensional positions different from each other acquired by detection of an object by one or more detection devices through a transmission body, the plurality of pieces of detection information including distortion due to the transmission body that exists between the detection devices and the object; detect a feature point from each of the plurality of pieces of detection information; and estimate, by minimizing an error between a three-dimensional position corresponding to the feature point and a detection position of the feature point corrected based on a distortion map expressing distortion at each of the two-dimensional positions, the distortion map, the three-dimensional position, and the detection position.

Abstract: According to an embodiment, an information processing device is used for controlling a mobile object. The device includes one or more hardware processors configured to: generate risk information indicating a level of a risk that is caused when the mobile object moves, based at least in part on a position of an obstacle with respect to the mobile object, the risk being indicated for each of a plurality of areas; and generate condition information indicating a condition for performing a countermeasure operation for a risk in accordance with the risk information.

Abstract: According to an embodiment, an information processing device includes one or more processors. The processors are configured to: acquire a plurality of pieces of detection information including detection results at two-dimensional positions different from each other acquired by detection of an object by one or more detection devices through a transmission body, the plurality of pieces of detection information including distortion due to the transmission body that exists between the detection devices and the object; detect a feature point from each of the plurality of pieces of detection information; and estimate, by minimizing an error between a three-dimensional position corresponding to the feature point and a detection position of the feature point corrected based on a distortion map expressing distortion at each of the two-dimensional positions, the distortion map, the three-dimensional position, and the detection position.

Abstract: A fuel cell system includes a fuel cell, a fuel gas supply line, an oxidizing agent gas supply line, a fuel gas discharge line, and a reformer provided in the fuel gas supply line. A first circulating line circulates the fuel gas from the fuel gas discharge line to an upstream side of the reformer in the fuel gas supply line as a first circulating gas. The circulation device is provided in the fuel gas supply line, and suctions the first circulating gas by using the flow of the fuel gas flowing through the fuel gas supply line as a driving flow. A second circulating line circulates the fuel gas from a downstream side of the circulation device in the fuel gas supply line or the fuel gas discharge line to the upstream side of the circulation device in the fuel gas supply line as a second circulating gas.

Abstract: A rotating electrical machine rotor core is implemented that can suppress an increase in number of manufacturing processes and has a magnetic structure that can reduce noise or vibration associated with rotation. A rotating electrical machine rotor core includes a member disposition hole in which a permanent magnet is disposed; and pair of magnetic flux limiting holes disposed on both sides in circumferential direction of each of magnetic poles, units in which member disposition hole is repeatedly made in circumferential direction being magnetic poles. Each magnetic plate includes plurality of types of through part pairs having different circumferential spacings between pair of limiting-hole through parts that makes pair of magnetic flux limiting holes.

Abstract: According to one embodiment, a gradient estimation device includes one or more processors. The processors acquire a first image and a second image obtained by photographing a surface of an object. The processors extract, from the first image, a first pixel indicating a boundary of an object in a direction different from a gradient direction of the surface, and extract a second pixel corresponding to the first pixel from the second image. The processors calculate gradient magnitude of the surface by transforming at least one of the first image and the second image such that a matching degree between the first pixel and the second pixel is increased.

Abstract: An information processing apparatus according to an embodiment includes a determination unit and an output control unit. The determination unit determines whether a particular part related to a type of an object is included in a blind spot of an object of interest. The output control unit outputs output information when it is determined that the part is included in the blind spot.

Abstract: According to an embodiment, an estimation device includes a storage unit and one or more hardware processors, the storage unit storing therein first position information indicating at least a position or a pose of a first landmark in a map. The processors acquire second position information indicating at least a position or a pose of a second landmark around a moving object. The processors estimate third position information and correspondence between the first landmark and the second landmark, based on the first and second position information, where the third position information indicates at least a position or a pose of the moving object in the map. The third position information and the correspondence are estimated such that an observation error of the second landmark in at least the position or the pose specified by the third position information and a matching error are reduced.

Abstract: A self position estimation apparatus according to an embodiment includes an acquisition unit configured to acquire map data, and a calculation unit configured to calculate a correspondence weight between observation data on a region around the moving object and the map data, based on a variation amount of depth in a predetermined direction.

Abstract: An ejector has an interior nozzle, an exterior nozzle, a suction part, a mixing part and a diffuser part. The interior nozzle and the exterior nozzle are arranged coaxially with each other. A driving fluid is supplied to the interior nozzle and/or the exterior nozzle. The suction part is arranged on an outer periphery of the exterior nozzle and sucks a suction fluid by a driving fluid jet ejected from the interior nozzle and/or the exterior nozzle. A mixing part mixes the driving fluid jet with the suction fluid, and supplies a mixture fluid. The diffuser part reduces a flow speed of the mixture fluid and ejects the mixture fluid outside. An outlet part of the interior nozzle is arranged at an upstream side of the ejector more than an outlet part of the exterior nozzle along the axial direction of the ejector.

Abstract: According to an embodiment, an information processing device includes one or more processors. The one or more processors is configured to acquire a map in which, for each of grids in a particular space, observation information representing object information on an object or the observation information representing non-observation information on non-observation of the object is correlated; and correct, for each of the grids, correlation of the observation information by using a learned model based on the observation information correlated with other peripheral grids.

Abstract: A self position estimation apparatus according to an embodiment includes an acquisition unit configured to acquire map data, and a calculation unit configured to calculate a correspondence weight between observation data on a region around the moving object and the map data, based on a variation amount of depth in a predetermined direction.

Abstract: According to an embodiment, an information processing apparatus includes one or more processors. The one or more processors are configured to detect an end point in a point cluster that constitutes a first object; and specify the end point as a reference point of the first object when a second object that is more distant than the end point from the apparatus is present within a neighboring region of the end point.

Abstract: An information processing apparatus according to an embodiment includes a determination unit and an output control unit. The determination unit determines whether a particular part related to a type of an object is included in a blind spot of an object of interest. The output control unit outputs output information when it is determined that the part is included in the blind spot.

Abstract: According to an embodiment, an information processing device is used for controlling a mobile object. The device includes one or more hardware processors configured to: generate risk information indicating a level of a risk that is caused when the mobile object moves, based at least in part on a position of an obstacle with respect to the mobile object, the risk being indicated for each of a plurality of areas; and generate condition information indicating a condition for performing a countermeasure operation for a risk in accordance with the risk information.

Abstract: According to an embodiment, an information processing device includes an acquirer, a categorizer, a shape fitter, and a specifier. The acquirer is configured to acquire position information of each of a plurality of detection points. The categorizer is configured to cluster the detection points into one or more detection point groups each representing an object. The shape fitter is configured to apply a predetermined shape model to each detection point group on the basis of the position information of each of the clustered detection points included in the each detection point group. The specifier is configured to specify a target point of the object on the basis of the shape model.

Abstract: A fuel cell system includes a fuel cell, a fuel gas supply line, an oxidizing agent gas supply line, a fuel gas discharge line, and a reformer provided in the fuel gas supply line. A first circulating line circulates the fuel gas from the fuel gas discharge line to an upstream side of the reformer in the fuel gas supply line as a first circulating gas. The circulation device is provided in the fuel gas supply line, and suctions the first circulating gas by using the flow of the fuel gas flowing through the fuel gas supply line as a driving flow. A second circulating line circulates the fuel gas from a downstream side of the circulation device in the fuel gas supply line or the fuel gas discharge line to the upstream side of the circulation device in the fuel gas supply line as a second circulating gas.

Abstract: According to one embodiment, a gradient estimation device includes one or more processors. The processors acquire a first image and a second image obtained by photographing a surface of an object. The processors extract, from the first image, a first pixel indicating a boundary of an object in a direction different from a gradient direction of the surface, and extract a second pixel corresponding to the first pixel from the second image. The processors calculate gradient magnitude of the surface by transforming at least one of the first image and the second image such that a matching degree between the first pixel and the second pixel is increased.

Abstract: A controller is configured to, based on a characteristic information of thermal output with respect to a temperature difference between a hot end and a cold end of a working chamber, changes at least one of a flow rate of a heating target fluid in a high temperature heat exchanger and a flow rate of a cooling target fluid in a low temperature heat exchanger. At least one of the flow rate of the heating target fluid in the high temperature heat exchanger and the flow rate of the cooling target fluid in the low temperature heat exchanger is adjusted such that the temperature difference between the hot and cold ends changes in a direction that increases thermal output.