Hitachi, Ltd.

Tdk Corporation

Hitachi Construction Machinery Co., Ltd.

The Furukawa Electric Co., Ltd.

Sony Corporation

Kao Corporation

Mitsubishi Electric Corporation

Nippon Telegraph and Telephone Corporation

Mitsubishi Heavy Industries Limited

Jeol Ltd.

Honda Motor Co., Ltd.

Oki Electric Industry Co., Ltd.

Konica Corporation

The University of Tokyo

Hitachi Car Engineering Co., Ltd.

Hiroyuki Yamada

Shiho Izumi

Kazuki Yamada

Norihiko Fujita

Kenji Suzuki

Shinya Imura

Hideki Sasaki

Takayoshi Kuwajima

Akihiko Seki

Hiroshi Sakamoto

Satoshi Usui

Masaki Saito

Masami Abe

Takashi Shigematsu

Kenji Hashimoto

Mikio Ishihara

Mariko Mizuochi

Kazunori Tsukuda

Yasuo Fujishima

Jun Yamakawa

Toshihiro Suzuki

Toshio Inoue

Nobuyasu Kanekawa

Koji Ito

Hiroshi Yamazaki

Nobuo Kawamura

Kazuhiko Mogi

Shinji Fujiwara

Meizo Shirose

Manabu Edamura

Jun Yamamoto

Hidekazu Moriki

Kenichiro Tokuo

Kazushi Tanaka

Hiroshi Matsuura

Isao Hayase

Satoshi Otsuka

Takeo Shimizu

Masaru Kitsuregawa

Junya Takahashi

Atsuji Saito

Kazuo Goda

Shinji Nagasawa

Minoru Hashida

Takaaki Chiba

Katsuki Suematsu

Junichi Shimada

Kenichi Kitamura

Naoto Yajima

Yusuke Kinouchi

Takashi Matsuzawa

Takashi Horai

Yuki Shimizu

Akira Kanazawa

Norifumi Kajimoto

Hiroshi Odakura

Takuya Otani

Koichi Takagi

Shinya Hamamoto

Tatsuhiro Kishi

Shigetoshi Shiotani

Masami Saito

Atsuo Takanishi

Kazuhiro Uryu

Tomotaka Teramachi

Ayanori Koizumi

Tomohiro Tami

Shigenori Kouno

Akira Hirata

Saku Egawa

Yoshiyuki Tsuchie

Michinori Yoshida

Daisuke Miyazaki

Toru Onose

Toshihiko Ohta

Hirohiko Ishida

Daisuke Katagiri

Akira Arai

Hisanori Arai

Takamasa Kai

Michito Matsumoto

Masatoshi Yoshida

Taro Morioka

Takefumi Yamamura

Nobukazu Kosone

Tadashi Haibara

Yoshifumi Yamaguchi

Etsuo Tanabe

Hidehisa Murayama

Masashi Nakaoka

Yutaka Sano

Sunao Takahashi

Masayuki Ohtsuki

Toshihiko Oota

Minemasa Omura

Tohru Himoto

Yohei Tsutsumi

Hiroki Yuzawa

Ikuko Yanagiuchi

Hirokazu Taniyama

A data management system constituted of first and second computer systems includes a client, and first and second servers which execute a same decision function with respect to identical transaction requests. The first server is provided in the first computer system and the second server is provided in the second computer system. For each transaction request, in an ordering phase, the second server orders a transaction request from the client into a strict serializable partial order, in a commit phase, the first server executes a transaction in accordance with the transaction request from the client in the partial order and returns to the client a first response, and in a validation phase, the second server executes a transaction in accordance with the transaction request from the client in the partial order and returns to the client a second response.

Data management system and method for detecting byzantine fault

The problem of ensuring safety and work efficiency for the actions of a control target is addressed in an environment in which different types of control systems coexist. A safety control server controls the actions of respective control targets in differing systems and includes an action adjustment unit that, for each control target of differing control systems, outputs to a control target an action adjustment instruction for adjusting the action of that control target when a contention occurs in which the action of that control target deviates from an assumed control result. An action plan adjustment unit, when the adjustment of the action satisfies a prescribed condition, adjusts an action plan indicating an action rule for achieving a function and avoiding a contention in a control target; and a safety rule adjustment unit adjusts a safety rule indicating an action rule for avoiding a contention in the control target.

Safety control device and safety rule adjustment method

A rotary machine includes a rotor having a cylindrical shape and having a main oil feed hole through which lubricating oil passes and that is provided in an axial direction and a slide bearing provided outward in a radial direction with a gap between the rotor and the slide bearing and configured to hold the rotor so that the rotor rotates around an axis. The rotor is provided with a branch oil feed hole through which the gap and the main oil feed hole communicate with each other and through which the lubricating oil passes. A foreign matter separating portion configured to separate foreign matter from the lubricating oil is provided further backward in a direction of rotation of the rotor than the branch oil feed hole.

Bearing structure, compressor, and refrigeration cycle apparatus with foreign matter separator

A server includes means for receiving a request for conversion from a first electronic value into a second electronic value from a user's terminal via a network, means for receiving an investment instruction to invest in the second electronic value obtained by the conversion from the user's terminal via the network, holding means for holding information regarding a type of merchandise corresponding to the second electronic value and a range of the second electronic value in association with each other, means for receiving a redemption instruction to redeem the second electronic value for the merchandise from the user's terminal via the network, the second electronic value being increased or decreased by the investment, and means for referring to the holding means and performing merchandise redemption processing on a basis of the received redemption instruction.

Server

In an architecture including a plurality of sub-application units and a plurality of CC-OCCs (Client-Coordinated transaction managers that perform Optimistic Concurrency Control) included in a plurality of data source client systems, consistency of a plurality of snapshots managed by a plurality of CC-OCCs is maintained for each transaction. With respect to each transaction, when the number of CC-OCCs which receive a read request and/or a write request for an object from two or more sub-application units in processing of M-number of (where M is an integer of 2 or more) sub-transactions that constitute the transaction is N (where N is an integer of 2 or more), N-number of unions are pairwise disjoints. With respect to each of the N-number of unions, the union is a union of a read set and a write set in a snapshot which corresponds to the transaction and which is managed by a CC-OCC.

Transaction processing system and method

A data management system receives a status update request in which a target is specified and executes status update processing of updating a status of the target specified in the status update request. The status update processing includes transaction processing that is processing of updating first information and second information in an ACID (Atomicity, Consistency, Isolation, Durability) transactional manner. The first information is a first object group (one or more first objects) for each target. The first object is data that represents the status of the target. The second information is a second object group (one or more second objects) for each target. The transaction processing includes first processing of creating, updating, or deleting the first object corresponding to the specified target, and second processing of adding the second object including at least one of a content of the first processing and a summary of the first object to the second object group corresponding to the specified target.

Data management system

A context that is a description for identifying one or more targets is added to a state update request. The status update request is issued by a first computer system and input to an ordering system. For each node system in a second computer system that communicates with one or a plurality of first computer systems and includes a plurality of node systems, each time a state update request is output from the ordering system, one or more targets are identified from the context of the state update request. When the identified one or more targets do not conflict with one or more targets specified in one or more status update requests being executed in the node system, the status update request is executed in the node system.

System with tamper-evidence

A node system of a second computer system executes processing of updating a state of a target specified in a request from a first computer system, and in the executing, adds an object to an asset for the target in an asset set. The object is data that represents the state of the target. The asset is assigned to each target and is a time series of objects. The asset set is a set of assets and has a DAG structure. A node is the object and an edge represents a relationship between objects. The added object is a terminal object. The node system outputs a proof of existence that is the terminal object or a summary thereof, and the proof of existence is saved in an external system managed by a management entity different from a management entity for the node system.

Data management system with tamper-evidence

A site management system manages the positions of workers and work areas of work machines. The workers can recognize the work areas of the work machines at a work site in which the work machines and the workers carry out work. A site management device is connected to a worker terminal carried by a worker and a work machine processor is mounted on a work machine. The site management device generates worker informationon the basis of a signal transmitted from the worker terminal and generates work machine informationbased on a signal transmitted from the work machine processor. Work area informationincluding the position and the work area of a work machine is generated on the basis of the pieces of informationandand a work area notification signal is transmitted with the work area information to the worker terminal device.

Site management system and work machine

The present invention intends to provide a risk management system that can accurately extract information necessary for analysis of a variety of accidents in which a machine is involved. For this purpose, a controller calculates a main risk that is the degree at which a main factor of an accident contributes to the occurrence of the accident on the basis of an evaluation value of the main factor, and calculates a subsidiary risk that is the degree at which a subsidiary factor of the accident contributes to the occurrence of the accident on the basis of an evaluation value of the subsidiary factor. Furthermore, the controller calculates, as the occurrence risk of the accident, an integrated risk that has a value equal to or larger than the main risk and increases or decreases at a degree lower than the degree of increase or decrease in the subsidiary risk, and, when the integrated risk has exceeded a predetermined threshold, causes a recording device to record parameters measured by measuring devices in a certain time period including a clock time at which the integrated risk has exceeded the predetermined threshold.

Risk management system

A construction management device computes a risk indicative of a degree of danger with which an accident occurs on the basis of information relating at least to a position of a worker measured by a worker position measuring device and a worker biometrical information measuring device, information relating at least to a position of a hydraulic excavator measured by a machine body position measuring device, a machine body posture measuring device, a machine front implement posture measuring device, and a machine operator biometrical information measuring device, personal information on a worker and an operator registered in a worker information registration device, and information on a construction environment from an environment information registration device, and outputs the computed risk as a coordinate risk associated with coordinates of the construction environment to a risk display device such that the computed risk is displayed in a map format on the risk display device.

Construction management system and work machine

A construction assisting system including a controller that performs construction assistance processing on the basis of positional relation between a worker and a hydraulic excavator, the construction assisting system including: an approach intention detecting device that detects an intention of the worker to approach the hydraulic excavator; an approach intention presenting device that presents a detection result of the approach intention detecting device to an operator of the hydraulic excavator; and an approach confirmation obtaining device that obtains a confirmation state of the operator of the hydraulic excavator for contents presented by the approach intention presenting device, the controller performing the construction assistance processing on the basis of position information of the worker when the operator of the hydraulic excavator denies the approach of the worker or when the operator of the hydraulic excavator does not confirm the intention of the worker to approach. It is thereby possible to perform construction assistance according to the intention of the worker, and further improve safety of the worker while suppressing a decrease in work efficiency.

Construction assisting system and work machine

When an automatic operation is finished, a detection process for detecting a ground contactable range where a work implement can be set is carried out on a basis of terrain profile information acquired by laser scanners, and, when the ground contactable range is detected, an automatic operation command signal for placing the work implement in contact with the ground contactable range is generated, whereas when the ground contactable range is not detected, an automatic operation command signal for placing the work implement in a predetermined standby posture is generated. As a result, a suitable standby posture can be taken according to the surrounding conditions when the automatic operation is finished.

Automatic operation work machine

Provided is an active acoustic control program that can reduce noise in a vehicle interior irrespective of the vehicle type, due to being installed in a device that is easily available to anyone. This active acoustic control program is downloaded using a communicator that transmits and receives data to and from a server, and this program causes a computation process device to execute a process for generating a control signal that causes a canceling sound to be outputted from a speaker provided in an interior of a vehicle in order to reduce noise in the vehicle interior. Said program is provided with an adaptive notch filter that processes a reference signal as an adaptive signal to generate a control signal, and a control filter coefficient update unit that continuously updates a filter coefficient of the adaptive notch filter so that an error signal is minimized.

Storage medium, microphone, and engine speed acquisition device

In each node system, a request execution unit executes, for each state update request, state update processing of updating an object representing a state of a target specified in the request, and returns a response indicative of completion of the request without executing tamper-evidence processing. The tamper-evidence execution unit executes tamper-evidence processing of detecting whether one or more common completion requests of one or a plurality of update completion requests are tampered with by comparing updated objects of two or more node systems or summaries thereof. The update completion request is a state update request for which the execution of the state update processing has been completed. The common completion request is an update completion request that is common among two or more node systems of the plurality of node systems.

Tamper-evidence processing by comparing updated objects or by comparing summaries thereof

Growing community of inventors

Tokyo, Japan

Hiroyuki Yamada