Abstract: A preceding-vehicle determination apparatus including a curvature-radius estimation unit that estimates a curvature radius R of a road, on which a host vehicle is traveling, based on a steering angle, when the vehicle speed is equal to or lower than a determination threshold value; a coordinate conversion unit that converts, based on the curvature radius R, a position of the preceding vehicle in a first coordinate system in which a curve corresponding to the curvature radius R is used as a reference to a position in a second coordinate system in which a straight line along a straight traveling direction of the host vehicle is used as a reference; and a host-vehicle-lane probability calculation unit that calculates a probability that the preceding vehicle is present on a host-vehicle lane, based on the position of the preceding vehicle in the second coordinate system.

Abstract: An object determining device includes imaging means for obtaining an image of the object, likelihood value calculating means for calculating a first likelihood value for the object shown in the image by use of the image obtained by the imaging means and a machine learning system and for calculating a second likelihood value for the object shown in the image by use of the image obtained by the imaging means and another machine learning system, the first likelihood value indicating a level of likelihood that the object is wearing the covering and the second likelihood value indicating a level of likelihood that the object is not wearing the covering, and determining means for determining whether or not the object, shown in the image obtained by the imaging means, is wearing a covering, on the basis of a ratio between the first likelihood value and the second likelihood value.

Abstract: An object determining device includes imaging means for obtaining an image of the object, likelihood value calculating means for calculating a first likelihood value for the object shown in the image by use of the image obtained by the imaging means and a machine learning system and for calculating a second likelihood value for the object shown in the image by use of the image obtained by the imaging means and another machine learning system, the first likelihood value indicating a level of likelihood that the object is wearing the covering and the second likelihood value indicating a level of likelihood that the object is not wearing the covering, and determining means for determining whether or not the object, shown in the image obtained by the imaging means, is wearing a covering, on the basis of a ratio between the first likelihood value and the second likelihood value.

Abstract: An electromagnetic reflector which is effective for electromagnetic waves in a range from 50 to 100 GHz, radiated from an on-board radar device, is integrally incorporated with an optical reflector for effectively receiving the electromagnetic waves by the reflector and, as reflected thereby, by the radar device even though the relative angle for receiving reflected radar waves becomes larger due to a shift of lanes by the preceding vehicle or due to a curve in the road.

Abstract: A powdery desulfurizer composition for injection desulfurization of molten iron, said composition comprising 30 to 90% by weight of quicklime and 70 to 10% by weight of diamide lime.