Nec Corporation

Nec Engineering, Ltd.

Teruki Sukenari

Tohru Kimura

Hitoshi Yano

Koji Fukami

Nobuhide Yoshida

Jun Noda

Yuuichi Aoki

Akitake Mitsuhashi

Daigo Taguchi

Kunihiro Suzuki

A second computer transmits, to a first computer, confirmation data including identification information and a version number of copy data updated in a cache. Based on the confirmation data received from the second computer and information stored in the persistent storage device, the first computer extracts the identification information and the version number corresponding to the copy data to be written to the persistent storage device, from the confirmation data, and transmits response data including the extracted identification information and the version number to the second computer. Based on the response data received from the first computer and information stored in the cache, the second computer determines the copy data in the cache to be transmitted to the first computer so as to be written to the persistent storage device.

Method of controlling data writing to persistent storage device

A transaction concurrent execution control system carries out a control of concurrently executing a transaction. The transaction concurrent execution control system includes a transaction execution unit for executing the transaction, a back-off time determination unit for determining a waiting time until the transaction is re-executed when a commitment of the transaction has failed, and a transaction pooling unit for causing the transaction to stand by for re-execution until the waiting time has elapsed when the commitment of the transaction has failed.

Transaction concurrent execution control system, method and program for carrying out a control of concurrently executing a transaction, including measuring execution time from starting to ending of transaction execution

A scheduling system includes: link creation means for creating a link as a partial route obtained by dividing the traveling route of a moving body indicated by traveling plan data; link adjustment range calculating means for calculating, for each link, a link adjustment range as an adjustment range of a scheduled pass-through time of the moving body not to cause the moving body to have a near-miss with another moving body; and adjusted traveling plan deciding means for deciding on adjusted traveling plan data indicative of a traveling plan of the moving body after adjusted by using link adjustment ranges of all links constructing the traveling route.

Scheduling system, method, and program

A communication network of the present invention includes: a plurality of superordinate nodestoforming a cascade type topology; and a plurality of terminal nodesto, connected to at least one superordinate node from among said plurality of superordinate nodes and forming a star type topology with the superordinate node connected.

Communication network, information processor and address assigning method

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Tokyo, Japan

Teruki Sukenari