摘要:
To guarantee that contents of an update by a transaction in a parallel database management system. A database management system includes a replica database management unit that manages the replica database, records synchronous information at a timing at which one of the transaction generated is valid in every database management unit and other transactions are invalid in every database management unit, extracts update information and the synchronous information for creating the replica database from the update logs, and causes the replica database management unit to import the update information of each transaction that has become valid before the synchronous information was recorded.
摘要:
To guarantee that contents of an update by a transaction in a parallel database management system. A database management system includes a replica database management unit that manages the replica database, records synchronous information at a timing at which one of the transaction generated is valid in every database management unit and other transactions are invalid in every database management unit, extracts update information and the synchronous information for creating the replica database from the update logs, and causes the replica database management unit to import the update information of each transaction that has become valid before the synchronous information was recorded.
摘要:
To guarantee the contents of an update by a transaction in a parallel database management system, the database management system includes a replica database management unit that manages the replica database, records synchronous information at a timing at which one of the transaction generated is valid in every database management unit and other transactions are invalid in every database management unit, extracts update information and the synchronous information for creating the replica database from the update logs, and causes the replica database management unit to import the update information of each transaction that has become valid before the synchronous information was recorded.
摘要:
A remaining life determining system for a stationary storage battery has a detecting unit configured to detect an evaluation value indicative of a deterioration level of the stationary storage battery, a first storage unit configured to store a usage history of the stationary storage battery, a second storage unit configured to store remaining life information associated with usage information of the stationary storage battery, a third storage unit configured to store remaining life basic information of the stationary storage battery, and a controller configured to estimate the remaining life of the stationary storage battery, from the usage history, the evaluation value, and the remaining life information.
摘要:
A differential transmission circuit includes differential signal transmission and reception units connected by a differential signal wiring having an inductor unit composed of magnetically coupled first and second inductors provided on first and second signal lines, an input-side capacitor unit including a first input-side capacitor having one terminal connected to a first inductor signal input terminal and the other terminal grounded and a second input-side capacitor having one terminal connected to a second inductor signal input terminal and the other terminal grounded, and an output-side capacitor unit including a first output-side capacitor having one terminal connected to a first inductor signal output terminal and the other terminal grounded and a second output-side capacitor having one terminal connected to a second inductor signal output terminal and the other terminal grounded.
摘要:
A starter driving semiconductor switch apparatus energizes and de-energizes a starter according to a command from an outside. A series circuit to which semiconductor switches are connected in series is provided between a battery serving as a power supply and the starter. The starter is energized by bringing all the semiconductor switches into conduction. A voltage or a current at a predetermined point in the series circuit is monitored to make a self-diagnosis on whether the starter is allowed to start and whether there is a failure in the semiconductor switches according to a monitor output. The starter driving semiconductor switch apparatus is thus expected to have a longer useful life by energizing the starter not by using mechanical contacts but by using semiconductor switches.
摘要:
A lighting device includes a face light emitter and a housing having an internal cavity. The internal cavity is defined by a wall and the face light emitter. The face light emitter is an electroluminescence panel having a permeable substrate to planarly radiate visible light. The electroluminescence panel has a plurality of holes each communicating from the internal cavity to an outside space.
摘要:
There is a disclosure of a system which controls a folding unit performing folding processing to one set of sheets supplied by a print unit. The one set of sheets includes sheets of a first size and/or a second size which is smaller than the first size. The system includes a first controller and second controller. When the one set of sheets includes a sheet of the first size, the first controller inhibits the folding processing to a sheet of the second size. When the one set of sheets does not include a sheet of the first size but includes a sheet of the second size, the second controller permits the folding processing to a sheet of the second size.
摘要:
A circuit device includes: a power supply circuit; and a logic circuit, the power supply circuit supplying a first power supply voltage and a second power supply voltage to the logic circuit, the first power supply voltage supplied by the power supply circuit periodically changing with a first reference voltage as a reference voltage, the second power supply voltage supplied by the power supply circuit periodically changing with a second reference voltage as a reference voltage, the power supply circuit supplying, due to resonance, the first power supply voltage and the second power supply voltage that repeat a first period during which a voltage difference between the first power supply voltage and the second power supply voltage is decreasing and a second period during which the voltage difference is increasing, and the logic circuit performing adiabatic circuit operation with the supply of the first and the second power supply voltage.
摘要:
In executing a job for combining a plurality of images and outputting the combined image, an information processing apparatus stores log information to allow a system administrator to later identify what image has been output while effectively saving the capacity of a storage device to be used.