Abstract: There is provided an information processing device that enables the purchase of a betting ticket at a timing when a desire to purchase increases according to the situation of the competition after the start of the competition. An information processing device includes: a competition situation acquisition unit that acquires a competition situation before and after the start of a competition between a plurality of competitors; a betting time setting unit that sets a betting time by setting a betting start trigger and a betting end trigger from a time when it is determined whether or not an order-of-finish determination part of any one of the plurality of competitors has reached a front to a predetermined time after the start of the competition; and a betting ticket purchase receiving unit that receives a purchase of a betting ticket within the set betting time.

Abstract: There is provided an information processing device that enables the purchase of a betting ticket at a timing when a desire to purchase increases according to the situation of the competition after the start of the competition. An information processing device includes: a competition situation acquisition unit that acquires a competition situation before and after the start of a competition between a plurality of competitors; a betting time setting unit that sets a betting time by setting a betting start trigger and a betting end trigger from a time when it is determined whether or not an order-of-finish determination part of any one of the plurality of competitors has reached a front to a predetermined time after the start of the competition; and a betting ticket purchase receiving unit that receives a purchase of a betting ticket within the set betting time.

Abstract: [Problem] When a nonreciprocal device operating at 100 GHz to 300 GHz is to be realized by using a conventional magnetic material of garnet-type ferrite or spinel-type ferrite, a huge permanent magnet is required and, therefore, it is very difficult to achieve a millimeter-wave band nonreciprocal device for practical use. [Solving means] To solve this problem, there is provided a millimeter-wave band nonreciprocal device composed of a magnetic material represented by a formula ?-MxFe2-xO3 (0<x<2), wherein M is at least one of elements In, Ga, Al, Sc, Cr, Sm, Yb, Ce, Ru, Rh, Ti, Co, Ni, Mn, Zn, Zr, and Y and the magnetic material having ?-phase hematite as a principal phase exhibits strong coercive force and anisotropic magnetic field at room temperature. Dimensions of a magnetic circuit containing a permanent magnet for operations of the nonreciprocal device can be made remarkably small and, by optimum design, the use of the magnetic circuit can be made unnecessary.