Abstract: A management apparatus in a time synchronization system includes a time variation information receiving unit configured to acquire time variation information and position information of a time synchronization apparatus, a position information classifying unit configured to classify time synchronization apparatuses into predetermined categories based on the acquired position information, a time variation analysis configured to determine majority based on whether patterns of time variation of the time synchronization apparatuses belonging to an identical category are identical to each other, and to analyze the time variation based on the determined results, and a filtering and delivery unit configured to output an instruction to block the time information received from the positioning satellite, to the time synchronization apparatus having abnormal time variation.

Abstract: An information processing device is an information processing device that outputs a fee plan indicating a fee required to use a vehicle or battery selected by a user, the information processing device including: an acquisition unit that acquires selection information specifying a selected object selected by the user; and a processing unit that outputs the fee plan, wherein when the selected object is eligible for a subsidy, the processing unit outputs an eligible plan as the fee plan, and in the eligible plan, the fee is set to a fixed amount of money in an initial predetermined period, and the fee is set to be lower than the fixed amount of money and to be decreased with passage of time after the predetermined period has passed.