Abstract: A light emitting element of one or more embodiments includes a first electrode, a second electrode oppositely to the first electrode, and an emission layer between the first electrode and the second electrode. The light emitting element of one or more embodiments includes a polycyclic compound represented by a specific chemical structure in the emission layer, thereby showing improved emission efficiency and life characteristics.

Abstract: The management device of an autonomous driving vehicle includes a congestion rate calculation unit and a waiting place setting unit. The congestion rate calculation unit is able to calculate the congestion rate of a parking lot adjoining each of a plurality of commercial facilities. In a case where the congestion rate of a neighbor parking lot, or a parking lot in the neighborhood of a boarding place contained in reservation information for an autonomous driving vehicle reserved for dispatch, during a waiting time period before the scheduled boarding time, is less than a congestion threshold, the waiting place setting unit sets the neighbor parking lot as a waiting place for the autonomous driving vehicle to wait during the waiting time period.

Abstract: An autonomous vehicle allows passengers to transfer from a passenger vehicle, which is a relatively large vehicle, to the autonomous vehicle. The autonomous vehicle is provided with an autonomous travel control unit (steering control unit) configured to, when the passenger vehicle is stopped, cause the autonomous vehicle to pull up alongside the passenger vehicle such that an entrance (second entrance) of the autonomous vehicle is placed next to an entrance (first entrance) of the passenger vehicle.

Abstract: A combustion diagnosis device for a diesel engine having a plurality of cylinders, including an engine speed sensor for detecting a rotational speed of each cylinder, an injection correction amount calculation unit for calculating an amount of correction for fuel injection of each cylinder in accordance with the engine speed sensor, a rotational fluctuation calculation unit for calculating a rotational fluctuation of each cylinder in accordance with the engine speed sensor, and a combustion state determination unit for determining a combustion state of a determination-target cylinder in accordance with the rotational fluctuation when the correction amount calculated by the injection correction amount calculation unit reaches an upper limit threshold value.

Abstract: A combustion diagnosis device for a diesel engine having a plurality of cylinders, including an engine speed sensor for detecting a rotational speed of each cylinder, an injection correction amount calculation unit for calculating an amount of correction for fuel injection of each cylinder in accordance with the engine speed sensor, a rotational fluctuation calculation unit for calculating a rotational fluctuation of each cylinder in accordance with the engine speed sensor, and a combustion state determination unit for determining a combustion state of a determination-target cylinder in accordance with the rotational fluctuation when the correction amount calculated by the injection correction amount calculation unit reaches an upper limit threshold value.

Abstract: A socket for an IC package includes a base member having a receptacle space for the IC package, a plurality of contacts arranged in parallel along the sides of the receptacle space of the base member. The contacts each have a contact portion for contact with a corresponding lead of the IC package received in the receptacle space. A spring portion urges the contact portion inwardly to obtain a contact pressure against a lead. A connecting shaft is pivotally supported vertically along each row of the contacts, and is associated with the contacts. A cover covers the base member, and the connecting shaft pivots by depression of the cover to displace the contact portion of each contact outwardly away from the corresponding lead of the IC package against a biasing force of the spring portion. The contact has a curved, first spring portion extending upwardly and inwardly from an inside edge of a plate portion.