Abstract: An alighting assistance device D of the present disclosure may be a device moving a driver seat rearward in a case where a determination may be made that an occupant seated on the driver seat of a vehicle alights. The device may include a height changer which changes a height of a steering wheel, a sitting height acquirer which acquires a sitting height of the occupant, and a steering wheel controller 33 as one example of a height controller which controls the height changer such that the height of the steering wheel becomes lower as the sitting height acquired by the sitting height acquirer may be higher in the case where a determination is made that the occupant alights.

Abstract: An electromagnetic wave absorber characterized by comprising from 50 to 85% by weight of inorganic hollow material, from 0.01 to 35% by weight of conductive material, from 5 to 47.5% by weight of binder, and from 0.1 to 47.5% by weight of filler. It has a reduced angle dependence of electromagnetic wave absorption and has the property of absorbing electromagnetic waves over a wide range of angles. It further has satisfactory processability and workability.

Abstract: An indoor environment design system 10 is composed of a target communication quality input section 12 for inputting a target communication quality of radio communication in a room, a signal propagation property calculation section 14 for calculating a delay spread in the room for implementation of the target communication quality, a signal propagation property conversion section 16 for converting the delay spread in the room thus calculated, to a delay spread in a laboratory, and an indoor environment design section 18 for designing an environment in the room for radio communication, based on the delay spread in the laboratory thus converted and on a relation between delay spreads in the laboratory and environments in the laboratory for implementation of the delay spreads in the laboratory, which is preliminarily obtained experimentally.

Abstract: An indoor environment design system 10 is composed of a target communication quality input section 12 for inputting a target communication quality of radio communication in a room, a signal propagation property calculation section 14 for calculating a delay spread in the room for implementation of the target communication quality, a signal propagation property conversion section 16 for converting the delay spread in the room thus calculated, to a delay spread in a laboratory, and an indoor environment design section 18 for designing an environment in the room for radio communication, based on the delay spread in the laboratory thus converted and on a relation between delay spreads in the laboratory and environments in the laboratory for implementation of the delay spreads in the laboratory, which is preliminarily obtained experimentally.

Abstract: The present invention provides a ceiling panel intended for good design which exhibits a light weight, sufficient flexural strength, incombustibility, sound-absorbing properties and heat insulation properties and desirable electric radiation-absorbing properties as an interior ceiling panel that acts as a best member for solving problems with communications by wireless LAN. The present invention also provides an interior ceiling panel having enhanced electric radiation barrier properties attained by applying a metal foil to the foregoing ceiling panel. A novel incombustible sound-absorbing electric radiation-absorbing ceiling panel having a thickness of from 1 mm to 30 mm is obtained by subjecting a water-dispersed slurry of a mixture of from 67 to 92 wt-% of a rock wool, from 0.5 to 8 wt-% of a beaten pulp, from 2 to 13 wt-% of a binder made of an organic resin, from 0.15 to 1 wt-% of a flocculating agent, from 0.5 to 10 wt-% of a natural mineral fiber and from 0.