Hitachi, Ltd.

Hitachi-ge Nuclear Energy, Ltd.

Hiroko Sukeda

Masaru Ohki

Yusuke Mishina

Tsuyoshi Ito

Hideyuki Hosokawa

Naoshi Usui

Mayu Sasaki

Naoko Yamazaki

Yoshiyuki Kaneko

Akemi Hirotsune

Yumiko Anzai

Toshihisa Tsukada

Hideki Sawaguchi

Mikio Suzuki

Takeshi Hoshino

Muneaki Yamaguchi

Tetsuya Nakagawa

Youichi Horii

Masaki Mukoh

Rieko Otsuka

Nobuo Nagai

Masakazu Itou

Kazuhiro Oozeki

Megumi Koike

More accurate prediction of reactor water quality of a nuclear reactor is implemented. A device for prediction of reactor water quality of a nuclear reactor in a nuclear power plant is disclosed. The device stores a reactor water quality prediction model which is learned using learning data, and with which future reactor water quality is predicted. An explanatory variable of the reactor water quality prediction model includes a value in a predetermined period unit that is generated from data acquired in an operating nuclear power plant. The device generates the value in a predetermined period unit from data acquired in a target operating nuclear power plant, and acquires a predicted value of the reactor water quality in the target nuclear power plant based on the reactor water quality prediction model and the value in a predetermined period unit.

Device for prediction of reactor water quality of nuclear reactor

A reactor water radioactivity concentration of a nuclear power plant can be predicted with high accuracy. First, a plant state quantity prediction value is calculated by using a physical model that describes plant state quantities of the power plant including a flow rate of feedwater and a metal corrosion product concentration in feedwater of the reactor water is calculated. Next, data for supervised learning is created, and the data for supervised learning includes the previously calculated plant state quantity prediction value and a plant state quantity such as the flow rate of feedwater, the metal corrosion product concentration in feedwater, a metal corrosion product concentration in reactor water, and a radioactive metal corrosion concentration of the reactor water in the reactor as input data and includes a radioactive metal corrosion concentration in the reactor water which is an actual measured value as output data, and a predictive model is trained.

Predictive model construction and prediction method for radioactive metal corrosion concentration in nuclear reactor water

A data processing apparatus includes a first communication interface configured to acquire the history data; a memory configured to store the acquired history data; a data processing module configured to generate first data including the first identifier and the time information by using the acquired history data, and store the generated first data into the memory; an ID conversion processing module configured to generate second data by converting the first identifier into a second identifier, which is effective for the first data including the time information indicating a time that falls within a first period, and store the generated second data into the memory; and a maintenance module configured to delete the history data and the first data from the memory.

Data processing apparatus, data processing system, and data processing method

An information recording medium capable of displaying multiple labels and a storing case for the information recording medium are provided. The multiple labels are displayed by changing the labels to be displayed while selectively selecting information layers in a multi information recording medium. The medium has a function to receive either voltage or current, and the information layers selectively receive either voltage or current for changing the labels.

Information recording medium storing system and storing case

A terminal device capable of operating with a smart card which includes a storage device and an input/output interface. The storage device stores an application program having at least one component that can run under an operating system in the smart card and an interpreter for interpreting scripts. The terminal device includes an operating system which executes loading of a command to exchange game scripts and scripts to be exchanged with a script stored in the smart card via the input/output interface. The scripts define a sequence of executing components included in the application program.

METHOD OF LOADING AN APPLICATION PROGRAM INTO A SMART CARD, SMART CARD, METHOD OF LOADING SCRIPTS INTO A SMART CARD, TERMINAL DEVICE CAPABLE OF OPERATING WITH A SMART CARD, AND STORAGE MEDIUM HOLDING AN APPLICATION PROGRAM

A system for loading, through a shop terminal, a game application into an IC card which disables playing of the game after a plurality of times in the same pattern by invalidating the game pattern when the play is completed and program log data is stored in the IC card. The log data is collected by a management server for each connection of the IC card and the shop terminal so as to administrate the collected data to enable dynamic management of game parameters, thereby the game application may be safely introduced to the IC card system, thereby increasing a user desire to use the card.

IC card, terminal device and service management server

A method enables loading/unloading of a plurality of types of games as part of an application program, typically, a game application program installed on a smart card system with a high ability to store information for which highly-reliable security is achievable, extending the range of use of the card. Of a Program to run on the card, the processing parts that can be executed in common are packaged as modules and game definitions described in scripts are loaded/unloaded into/from the card as required from a terminal operating with the card. In the program, a script interpreter that interprets and executes scripts, a controller that controls the loading/unloading of scripts, a controller that performs the management of point data and rights to play a game are provided, whereby dynamic loading/unloading of types of games is possible and one application can offer a plurality of types of games that can be selectively executed.

The invention provides a method that enables loading/unloading a plurality of types of games as part of an application program, typically, a game application program installed on a smart card system with high ability of storing information for which highly-reliable security is achievable, extending the use range of the card. Of a program to run on the card, the processing parts that can be executed in common are packaged as modules and game definitions described in scripts are loaded/unloaded into/from the card as required from a terminal operating with the card. In the program, a script interpreter that interprets and executes scripts, a controller that controls scripts loading/unloading, a controller that performs the management of point data and rights to play game are prepared, whereby dynamic loading/unloading of types of games is possible and one application can offer a plurality of types of games that can be selectively executed.

An electronic interpreter for interpreting sentences between a first person and a second person. The electronic interpreter includes a memory for storing sentence data in a data structure having a plurality of sets of sentences including translations of the sentences, wherein each sentence of each set of sentences is linked to another of the sets of sentences, and a data processing unit. The data processing unit retrieves a set of sentences from the memory in response to a keyword input from the first person using an input device, displays the set of sentences on a display, selects a sentence from the set of sentences in response to an input from the first person using the input device, displays a translation of the selected sentence on the display along with another set of sentences linked to the selected sentence, selects a sentence from the another set of sentences in response to an input from the second person using the input device, displays a translation of said selected sentence on the display along with another set of sentences linked to the selected sentence, and repeats all of the previous operations continually until a keyword has been input from the first person using the input device.

Electronic interpreter utilizing linked sets of sentences

A magnetic recording/reproducing uses a wide frequency band of a DC component to the next lowest spectral null frequency point and higher by using an existing recording/reproducing head and medium. Intersymbol interference is added to a magnetic recording channel so that an impulse response comes to a partial-response channel shown by polynomial 1-D.sup.n (D.sup.n is an n-bit signal delay); in which T is a Nyquist interval (reproduction-bit time interval), the values of (n&gt;2) and T are selected by assuming equal frequency interval between the spectral null frequency points 1/nT, and thereby a symbol string having a Nyquist frequency equal to or higher than the second spectral null frequency point from the lowest frequency side excluding the vicinity of the DC component of the recording/reproducing characteristic is recorded or reproduced.

Growing community of inventors

Tokorozawa, Japan

Hiroko Sukeda