Hitachi

A first secure server: encrypts a data encryption key with a unique key unique to the first secure server; stores the encrypted unique key therein; generates a first ciphertext obtained by encrypting the data encryption key with a first shared key; transmits the first ciphertext to the second secure server; generate a second ciphertext obtained by encrypting an escrow target data with the data encryption key; stores the second ciphertext in the first secure server therein; and outputs duplicated data of the second ciphertext, and a second secure server: decrypts the first ciphertext received from the first secure server with the first shared key to extract the data encryption key; generates a third ciphertext obtained by encrypting the extracted data encryption key with a private key; stores the third ciphertext therein; and delete the private key therefrom.

A design support device (2) of the present invention includes: a virtual space creation unit (211) which creates image data of a virtual space simulating a site of a design target; a penetration creation support unit (213) which has a function of creating a penetration for a penetration formation target portion in the virtual space, and is capable of creating image data of an installation area image in which an image of an area where the penetration is formable is superimposed on an image of the penetration formation target portion in the virtual space in a case where information regarding a design specification of the penetration to be created in the penetration formation target portion is acquired from an external device; and a communication unit (23) which is communicably connected to the external device, receives information regarding a design specification of the penetration from the external device, and transmits image data of the installation area image created by the penetration creation support unit to the external device.

A method for performing system simulations that comprises receiving, by a processor, input data for generating a simulation model; generating, by the processor, the simulation model for performing simulations based on the input data, the simulation model comprises a voxel model that performs simulations as voxel-by-voxel representations; and generating, by the processor, a simulation report based on simulation output of the simulation model.

A power conversion device includes a circuit that converts DC power into AC power by a pulse width modulation method, and a control device that controls the circuit. A control device executes: processing of controlling the circuit to operate in an asynchronous mode that asynchronously generates a carrier and a modulation wave and a synchronous mode that is used in an output frequency region higher than an output frequency region in the asynchronous mode and in which a carrier pulse number per modulation wave cycle is set from a first order to an n-th order as a multiple of 3 from a high frequency side to a low frequency side; processing of setting an upper limit frequency of a k-th-order (k<n) carrier frequency region to a high frequency side of a common upper limit frequency initially set for each order of the synchronous mode; and processing of setting an upper limit frequency of a (k+1) th-order carrier frequency region to a low frequency side of the common upper limit frequency.

A computer system stores information on a model that receives data including values of parameters representing attributes of the site and the group as an input and outputs an outcome indicator. The computer system generate an initial data including initial values of the parameters, repeatedly perform processing of changing the initial value of a parameter included in the initial data to generate a piece of analysis data, repeatedly perform processing of calculating a difference between the outcome indicator obtained by inputting the piece of analysis data into the model and the outcome indicator obtained by inputting the initial data into the model, and calculating a evaluation indicator representing a magnitude of an influence of a value of the parameter changed for generating the piece of analysis data on the outcome indicator based on the difference; and select a measure based on the evaluation indicator.

A production line planning device for planning a production line for a product includes: a storage unit configure to store product operation information in which a product and an operation necessary for producing the product are associated and stored, operation facility correspondence information in which the operation and a facility necessary for performing the operation are associated and stored, component classification information in which a main component and an auxiliary component that make up the facility are associated and stored, and facility common ID information in which the main component of the facility and a reference facility are associated and stored; a process planning variable calculation unit configured to, when the operation included in the product operation information matches the operation included in the operation facility correspondence information, add the operation, the facility, and a decision variable to process planning variable information in a case where the facility included in the matched operation facility correspondence information is not included in the reference facility in the facility common ID information; a process planning variable cost calculation unit configured to obtain, based on the component classification information, a cost of the operation and the facility corresponding to the added decision variable; and an output device configured to output the number of the decision variables added by the process planning variable calculation unit and an investment cost obtained by adding up costs of the respective decision variables obtained by the process planning variable cost calculation unit.

An environment evaluation device (1) of the present invention approximates, using a non-linear model (32), time-series relations among an objective variable serving as a criterion for calculating a biodiversity credit and explanatory variables of an analysis target, evaluates a degree of a fluctuation and a symmetry of the fluctuation of the objective variable based on the approximated non-linear model (32), estimates an interaction between the explanatory variables of the analysis target based on the approximated non-linear model (32), estimates a time point at which a value of the objective variable converges in the non-linear model (32), and the value of the objective variable which converges, based on a result of the evaluation of the degree of the fluctuation and the symmetry of the fluctuation, as well as, the estimated interaction, and evaluates, based on the value of the objective variable which converges, a change amount of the objective variable which non-linearly transitions relative to the explanatory variables of the analysis target.

Provide support for evidence record management of legal compliance in an organization. A legal compliance support system manages legal operation management information associating a legal requirement, which defines an item to be implemented for compliance with a law or regulation, with evidence record information related to an evidence record necessary to indicate that compliance with the legal requirement has been implemented. The legal compliance support system analyzes the stored evidence record and presents the evidence record that satisfies the legal requirement as an evidence record candidate to a user through an output unit. The legal compliance support system receives the evidence record selected from the evidence record candidate by the user, associates the legal requirement satisfied by the evidence record with the evidence record selected from the evidence record candidate by the user, and registers the association as compliance record management information.

A pressure profiling method comprising receiving, by a processor, raw data from a plurality of sensors embedded in a pair of shoes being used by a user; performing, by the processor, preprocessing of the raw data to generate preprocessed data; calculating, by the processor, ground reaction force on the user using the preprocessed data; and performing, by the processor, at least one of posture adjustment recommendation generation, report generation, or additional data analysis using the ground reaction force derived from the preprocessed data.

A technique is provided that can prevent damage to a waste heat recovery heat exchanger. An air compressor includes cooling heat exchangers that perform heat exchange between cooling water and compressed air, and a cooling liquid pipe through which the cooling water flows. A waste heat recovery unit includes waste heat recovery heat exchangers that perform heat exchange between waste heat recovery water and compressed air, a waste heat recovery liquid pipe through which the waste heat recovery water flows, a waste heat recovery liquid inlet pipe and a waste heat recovery liquid outlet pipe that connect an auxiliary cooling facility and the waste heat recovery liquid pipe, flow path switching three-way valves that open and close the inlet and outlet pipes, and a temperature controller that controls the valves. When the temperature of the waste heat recovery water exceeds a threshold, the temperature controller opens the inlet and outlet pipes by controlling the three-way valves.