Hitachi, Ltd.

Kabushiki Kaisha Toshiba

Tokyo Shibaura Denki Kabushiki Kaisha

The Japan Steel Works, Ltd.

Mitsubishi Power, Ltd.

Hitachi Solutions, Ltd.

Jsw Aktina System Co., Ltd.

Daisuke Ito

Kazutomo Ushijima

Akira Shimizu

Shinji Fujiwara

Frederico Buchholz Maciel

Ikuo Tashiro

Mituyoshi Morohoshi

Masaaki Tanizaki

Masashi Machida

Ryo Shimizu

Tatsuro Matsushima

Tamotsu Odajima

Hideki Hayashi

Itaru Nishizawa

Akinori Asahara

Kouji Kimura

Yoshihisa Masuda

Seijiro Muramatsu

Kazuyuki Tsurunaga

Kunio Matsukura

Kohji Kimura

Tomoharu Tamaoki

Hisanori Kajiyama

Miki Nishino

Hiroyuki Okumura

Eriko Shimizu

A laser irradiation apparatus () according to an embodiment includes an optical-system module () configured to apply laser light (L) to an object to be irradiated, a shield plate () in which a slit () is formed, through which the laser light (L) passes, and a reflected-light receiving component () disposed between the optical-system module () and the shield plate (), in which the reflected-light receiving component () is able to receive, out of the laser light (L), reflected light (R) reflected by the shield plate ().

Laser irradiation apparatus and method for manufacturing semiconductor device

A rotating electrical machine of the present invention comprises a rotor; a stator disposed facing the rotor with a predetermined gap, and including a stator core and a stator coil; a high voltage bushing that outputs electricity from the stator coil to the outside; an electric power line including at least a connection ring extending in a circumferential direction, and connecting the high voltage bushing and one side of a coil end which is an axial-direction end of the stator coil to form an electrical path; and a dummy ring including a metal as a main material, and disposed in alignment with the connection ring in the circumferential direction and in a same circumference as the connection ring.

Rotating electrical machine

According to one embodiment, there is provided a steam valve apparatus including a main throttle valve, a steam control valve arranged on a downstream side of the main throttle valve, and an intermediate flow-channel part which connects the main throttle valve and the steam control valve. The intermediate flow-channel part is a circular pipe flow channel forming a circular arcuate shape so as to change a flow of steam, which has flowed out of the main throttle valve, from a perpendicular direction into a direction of flowing out into the inlet part. An outlet part is open upward, and a valve rod penetrates a lower part of a casing downward.

Steam valve apparatus

In executing query distributed processing in a computer system having a plurality of computers, a query and a sliding window are inherited between different computers. If a tuple having a new principal key value is detected when a query is to be executed, a relevant individual query and a relevant sliding window are inherited between computers, and further a sliding window of a relevant common query is inherited between computers.

Method and computing system for distributed stream data processing using plural of computers

To provide a database which has plural log storage areas, and eliminates the sort in the restoration process by means of the application of logs, thereby carrying out the restoration quickly. A management server allocates DB servers to a corresponding one of plural data storage areas so as to access the corresponding one. The DB servers store data to the allocated data storage areas. When the data is referenced or updated, a log representing a data change history is stored in preset log areas for each data server. When the management server transmits a notification to change the data storage areas, area remapping logs are stored in log areas.

Method for managing a database system

Provided is a k-nearest neighbor search method of searching for a query number k of nearest points to an arbitrary point in a DBMS for creating a spatial index from multidimensional points, comprising setting a search conditions, judging which of a lowest branch and an intermediate branch of the spatial index a nearest region to the query point is, calculating, when the nearest region is judged to be the lowest branch, a distance between the query point and a child region of the nearest region, storing information of a divided region which has become a calculation target, calculating, when the nearest region is judged to be the intermediate region, a distance between the query point and a point included in the nearest region, storing information of the point which has become a calculation target, finishing search processing when the search conditions are satisfied, and obtaining a search result from the DBMS.

K-nearest neighbor search method, k-nearest neighbor search program, and k-nearest neighbor search device

A database management method for updating data of a duplicated ID sequential arrangement table and arranging segments of data with respect to the arrangement table includes managing a management table holding the arrangement table name and a name of a duplicated key column, arranging a new row in an empty space in a first partial set of segments of rows having identical values in the duplicated key column to that of the new row, searching for a sequential empty space having capacity larger than that needed to hold the first partial set of segments of rows, and moving the first partial set of segments of rows to the sequential empty space and arranging the new row in a different set of segments if the sequential empty space is found or arranging the new row in a new segment if the sequential empty space is not found.

Database management program

A shared-nothing database management system employs a method of adding and removing a database server without significantly affecting the processing performance for accessing a table from a user or an application. A scheduler module creates a schedule which separately handles the addition of a CPU resource and the addition of a storage I/O resource, and a server is added in accordance with the created schedule. A common disk is used to remove a disk at an arbitrary timing. Further, a data region is previously subdivided on the common disk to eliminate a movement of data associated with the addition of a server.

Method of changing system configuration in shared-nothing database management system

A database management system has a plurality of database servers and data can be transferred between them by partitioning a data area into small areas and altering allocation of the small areas to the database servers. After altering the configuration, there occurs degradation in processing speed that accompanies re-creation of the index. If this problem is solved by using conventional techniques, noticeable degradation in processing speed will occur to a specific query at the time of a steady state operation. Accordingly, an index created for each of the small areas and an index to all of the small areas are allocated to the database server and used in combination.

Indexing method of database management system

When operating a database management system that consists of a plurality of database servers and enables the database servers to transfer data between them by partitioning a data area into small areas and altering allocation of the small areas to the database servers, after altering the configuration, there occurs degradation in processing speed that accompanies re-creation of the index. If this problem is solved by using the conventional technique, noticeable degradation in processing speed will occur to a specific query at the time of a steady state operation. When operating the database management system that consists of the plurality of database servers and enables the database servers to transfer data between them by partitioning the database area into small areas and altering the allocation of the small areas to the database server, an index created for each of the small areas and an index to all the small areas allocated to the database server are used in combination.

The present invention aims to dynamically re-configure hosts and storage in a shared-nothing database. In the shared-nothing database, processestoexecuted in the hoststoaccess data of a storage device. A system managerand a database managermanage the hoststoand the storage device. The processestoaccess one or more diskstoof the storage device. To add or reduce the number of the hosts, the processestoare reassigned among the hoststo

Database control method

A supervisory system is used for a superconductive transformer which comprises primary to Nth-order windings (N is an integer of not less than 2) windings, and the windings are formed of superconductive lines and are wound around an outer surface of a signal core. The supervisory system can detect quench occurring in the windings. The supervisory system includes N voltage sensors for detecting terminal voltages of the windings of the superconductive transformer, N current sensors for detecting currents of the windings, a magnetic flux detector mounted on the core of the transformer, and a discriminator for discriminating a quenched one of the windings on the basis of change patterns unique to output signals from the voltage sensors, output signals from the current sensors, and an output signal from the magnetic flux detector, and a switch for cutting off supply of an electrical power to the superconductive transformer according to an output signal from the discriminator.

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Kokubunji, Japan

Daisuke Ito