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.).