Abstract: A magnetization ring is disposed between a rotor and a core portion surrounding the rotor, the rotor having permanent magnets and inter-pole portions which are arranged in a circumferential direction about an axis. The magnetization ring has a magnetic portion facing the center of the permanent magnet in the circumferential direction, and a nonmagnetic portion facing the inter-pole portion of the rotor.

Abstract: In a tapered roller bearing, a large-diameter-side annular portion includes large-diameter-side pocket surfaces opposed to large end surfaces of respective tapered rollers; and oil retaining recesses each having an opening spanning an inner peripheral surface of the large-diameter-side annular portion and each of the large-diameter-side pocket surfaces. Each of the oil retaining recesses has an inner surface having a radially inwardly facing surface portion which is an inclined surface that is radially inwardly inclined toward the corresponding tapered roller.

Abstract: Provided are a biological information obtainment device, a biological information obtainment system, and a biological information obtainment method which accurately identify hemodynamic elements included in a hemodynamic signal. The present technique provides a biological information obtainment device including: a signal decomposition unit that decomposes a hemodynamic signal detected from an organism into a plurality of component signals; a periodicity calculation unit that calculates a periodicity of each of the plurality of component signals; and an identification unit that identifies a hemodynamic element based on the periodicity. The present technique also provides a biological information obtainment system and a biological information obtainment method.

Abstract: A content presentation system, a content presentation device, and a content presentation method that reduce a burden on a user and present suitable contents to the user with high accuracy are provided. The present technology provides a content presentation system including a computer device that holds content information associated with emotion information indicating an emotion of a user, in which the computer device at least includes a machine learning model that, on the basis of a plurality of pieces of content information presented to the user corresponding to desired emotion information indicating emotion information desired by the user and content information selected by the user from the plurality of pieces of content information, performs machine learning so as to present the content information suitable for the emotion information.

Abstract: A rolling bearing includes an outer ring as a fixed ring, an inner ring as a rotary ring, and rolling elements disposed between the outer ring and the inner ring. The outer ring includes, on the radially opposite side of its raceway surface, a fitting surface fitted to a mating member, two annular grooves in which elastic members are fitted, and a recess adjacent to the annular grooves, and the recess has a bottom surface having an outer diameter smaller than the outer diameter of the fitting surface.

Abstract: A difference between a maximum value and a minimum value of arithmetic mean roughness Ra of an annular surface region in contact with a larger flange surface, in a larger end face of the tapered roller, is not greater than 0.02 ?m. A value of a ratio R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a set radius of curvature of the larger end face of the tapered roller and RBASE represents a distance from a point which is an apex of a cone angle of the tapered roller to the larger flange surface of the inner ring. A ratio Rprocess/R is not lower than 0.5 where Rprocess represents an actual radius of curvature after grinding of the larger end face of the tapered roller and R represents a set radius of curvature.

Abstract: In a tapered roller bearing, a large-diameter-side annular portion includes large-diameter-side pocket surfaces opposed to the large end surfaces of the respective tapered rollers; and oil retaining recesses each having an opening spanning the inner peripheral surface of the large-diameter-side annular portion and each of the large-diameter-side pocket surfaces. Each oil retaining recess has an inner surface having a radially inwardly facing surface portion, the radially inwardly facing portion being an inclined surface radially inwardly inclined toward the corresponding tapered roller.

Abstract: A biological information measurement device according to an embodiment of the present disclosure includes a control section that controls a first connection and disconnection and a second connection and disconnection, thereby inputting, to an AD conversion section, a plurality of first analog signals for changes in impedance or conductance between electrodes of individual electrode pairs and a second analog signal for a change in impedance or conductance between the electrodes of a plurality of the electrode pairs.

Abstract: A rolling bearing includes an outer ring as a fixed ring, an inner ring as a rotary ring, and rolling elements disposed between the outer ring and the inner ring. The outer ring includes, on the radially opposite side of its raceway surface, a fitting surface fitted to a mating member, two annular grooves in which elastic members are fitted, and a recess adjacent to the annular grooves, and having a bottom surface having an outer diameter smaller than the outer diameter of the fitting surface.

Abstract: A biological information processing apparatus according to an embodiment of the present technology is provided with a sphygmographic sensor unit, a plurality of calculation units, and an output unit. The sphygmographic sensor unit outputs a pulse wave signal. The plurality of calculation units respectively calculate heart rate candidate information with a reliability on a basis of the output pulse wave signal. The output unit outputs heart rate information on a basis of the heart rate candidate information and the reliability thereof calculated by each of the plurality of calculation units.

Abstract: A difference between a maximum value and a minimum value of arithmetic mean roughness Ra of an annular surface region in contact with a larger flange surface, in a larger end face of the tapered roller, is not greater than 0.02 ?m. A value of a ratio R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a set radius of curvature of the larger end face of the tapered roller and RBASE represents a distance from a point which is an apex of a cone angle of the tapered roller to the larger flange surface of the inner ring. A ratio Rprocess/R is not lower than 0.5 where Rprocess represents an actual radius of curvature after grinding of the larger end face of the tapered roller and R represents a set radius of curvature.

Abstract: A cage for a tapered roller bearing includes a large-diameter-side annular portion circumferentially extending along large end surfaces of a plurality of tapered rollers; a small-diameter-side annular portion circumferentially extending along small end surfaces of the tapered rollers; and a plurality of pillars coupling together the large-diameter-side annular portion and the small-diameter-side annular portion. The large-diameter-side annular portion has large-diameter-side pocket surfaces opposed to the large end surfaces of the respective tapered rollers. The large-diameter-side pocket surfaces include oil retaining holes including blind holes, and being configured to receive and retain lubricating oil by capillary action.

Abstract: In the tapered roller bearing, at least any one of an outer ring, an inner ring, and a plurality of tapered rollers includes a nitrogen enriched layer. An oil retaining hole is provided in a larger annular portion of a cage. A value of a ratio R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a set radius of curvature of a larger end face of the tapered roller and RBASE represents a distance from a point which is an apex of a cone angle of the tapered roller to a larger flange surface of the inner ring. A ratio Rprocess/R is than not lower 0.5 where Rprocess represents an actual radius of curvature after grinding of the larger end face of the tapered roller and R represents a set radius of curvature.

Abstract: A gas sensor element includes a solid electrolyte body, a first electrode, a second electrode, and a protective layer. The protective layer includes at least a first catalyst layer that supports a first catalyst metal other than a metal facilitating a reduction reaction of nitrogen oxide and a second catalyst layer that supports only a second catalyst metal facilitating the reduction reaction of the nitrogen oxide. The first catalyst layer and the second catalyst layer are arranged in a path through which a gas under measurement is supplied from the outside of the gas sensor element to the first electrode in such a manner that the first catalyst layer and the second catalyst layer are not in direct contact with each other.

Abstract: A vital sign processing device according to an embodiment of the present technology includes a pulse-wave sensor unit, an output unit, and a first filter unit. The pulse-wave sensor unit outputs a pulse-wave signal. The output unit outputs a heart-rate information item on the basis of the output pulse-wave signal. The first filter unit sets a first frequency band on the basis of the output heart-rate information item, and allows the set first frequency band of the pulse-wave signal to pass through the first filter unit.

Abstract: A difference between a maximum value and a minimum value of arithmetic mean roughness Ra of an annular surface region in contact with a larger flange surface, in a larger end face of the tapered roller, is not greater than 0.02 ?m. A value of a ratio R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a set radius of curvature of the larger end face of the tapered roller and RBASE represents a distance from a point which is an apex of a cone angle of the tapered roller to the larger flange surface of the inner ring. A ratio Rprocess/R is not lower than 0.5 where Rprocess represents an actual radius of curvature after grinding of the larger end face of the tapered roller and R represents a set radius of curvature.

Abstract: An object is to provide a technique for removing fluctuations caused by a change in posture of a target from which a blood flow velocity is acquired when measuring the blood flow velocity. The present technology provides a biological information acquisition device including: a blood flow velocity measurement unit that is installed on a head; a detection unit that detects a position change amount of the blood flow velocity measurement unit, a moving velocity of the blood flow velocity measurement unit, or the position change amount and the moving velocity of the blood flow velocity measurement unit; a correction information generation unit that generates correction information of a blood flow velocity on the basis of the position change amount, the moving velocity, or the position change amount and the moving velocity; and a correction unit that corrects the blood flow velocity measured by the blood flow velocity measurement unit using the correction information.

Abstract: A vital sign processing device according to an embodiment of the present technology includes a pulse-wave sensor unit, an output unit, and a first filter unit. The pulse-wave sensor unit outputs a pulse-wave signal. The output unit outputs a heart-rate information item on the basis of the output pulse-wave signal. The first filter unit sets a first frequency band on the basis of the output heart-rate information item, and allows the set first frequency band of the pulse-wave signal to pass through the first filter unit.

Abstract: It is possible to accurately reduce body motion noise included in an observation signal of biological information. Provided is a biological information processing apparatus including a noise reduction processing unit configured to calculate an error signal obtained by subtracting body motion noise included in an observation signal from a first sensor unit configured to measure biological body affect as an observation signal, on the basis of a body motion signal from a second sensor unit configured to measure a body motion change, and/or a pressure signal from a third sensor unit configured to measure a pressing force change in skin.

Abstract: In the tapered roller bearing, at least any one of an outer ring, an inner ring, and a plurality of tapered rollers includes a nitrogen enriched layer. An oil retaining hole is provided in a larger annular portion of a cage. A value of a ratio R/RBASE is not smaller than 0.75 and not greater than 0.87 where R represents a set radius of curvature of a larger end face of the tapered roller and RBASE represents a distance from a point which is an apex of a cone angle of the tapered roller to a larger flange surface of the inner ring. A ratio Rprocess/R is than not lower 0.5 where Rprocess represents an actual radius of curvature after grinding of the larger end face of the tapered roller and R represents a set radius of curvature.