Abstract: A prediction unit predicts an illuminance limit time (LT) at which an illuminance of an area in which a drone flies falls below a threshold value, based on an illuminance acquired by an acquisition unit, and predicts a remaining time (ST) from a current time (NT) to the illuminance limit time (LT). A comparison unit (compares the remaining time (ST) predicted by the prediction unit with a future scheduled flight time (FT) included in the flight plan information for the drone in accordance with the above-described method. A changing unit changes the flight plan information for the drone when the remaining time (ST) is considered insufficient compared to the future scheduled flight time (FT), so that the future scheduled flight time (FT) is no greater than the remaining time (ST).

Abstract: A wireless connection device that performs wireless communication with a terminal which is a communication target by wirelessly connecting to the terminal using a predetermined protocol includes: a terminal state acquiring unit configured to acquire an advertisement signal which is used to cause the wireless connection device to recognize presence of the terminal and which includes terminal state information indicating a state of the terminal; a determination unit configured to determine that wireless connection to the terminal is to be performed when the terminal state information indicates a predetermined state indicating that a user is using the terminal; and a connection processing unit configured to perform a wireless connection process to the terminal to which it is determined that connection is to be performed by the determination unit using the predetermined protocol.

Abstract: A vertical seismic isolation structure is capable of achieving vertical seismic isolation of nuclear reactor components connected to each other by primary pipings, while suppressing the relative displacement with respect to the primary pipings. A nuclear reactor vessel, circulating pumps and heat exchangers, all of which are connected to each other by primary pipings in which a coolant is circulated, are mounted on a common deck. Vertical seismic isolators each of which has laminated large coned disc springs and is capable of expanding and contracting in only the vertical direction are installed on the top of a concrete wall surrounding the respective nuclear reactor components. The common deck is placed on all the vertical seismic isolators so as to support the entire seismic isolation structure (the common deck, the nuclear reactor components, etc.).