Abstract: A mining riser pipe is extended from above water toward a water bottom containing water bottom resources, and a lower portion of an insertion pipe connected to a lower portion of the mining riser pipe is inserted into the water bottom. A liquid is supplied into the insertion pipe and a rotation shaft extends axially inside both of pipes is rotated to rotate stirring blades attached to a lower portion of the rotation shaft inside the insertion pipe, thereby drilling and dissolving mud S inside the insertion pipe into a slurry form is raised to an upper portion of the insertion pipe by a stirring flow generated by the rotation of the stirring blades, and the raised mud is lifted above the water through the mining riser pipe by lifting force.

Abstract: A sound source separation filter information estimation device (10) estimates a covariance matrix having information on a correlation between sound source spectra and information on a correlation between channels as information on sound source separation filter information for separating an individual sound source signal from a mixed acoustic signal.

Abstract: An acoustic signal enhancement device includes: a spatiotemporal covariance matrix estimation unit 2 configured to estimate spatiotemporal covariance matrices Rf(j) and Pf(j); a reverberation suppression unit 3 configured to obtain a reverberation suppression filter Gf(j) of the sound source j using the estimated spatiotemporal covariance matrices Rf(j) and Pf(j) for each sound source j and to generate a reverberation suppression signal vector using the obtained reverberation suppression filter Gf(j) and the observation signal vector Xt,f; a sound source separation unit 4 configured to obtain an enhanced sound yt,f(j) of the sound source j and power of the sound source j using the generated reverberation suppression signal vector for each sound source j (where 1?j?J) corresponding to the target sound; and a control unit 5 configured to perform control such that processes of these units are repeatedly performed.

Abstract: Provided is an endoluminal device system including: an elongated and flexible endoluminal device; a wire that is disposed in the endoluminal device; a first sensor that detects tension of the wire; a second sensor that detects displacement of the wire; a driving device capable of pulling the wire; and a processor. The processor is configured to: cause the driving device to execute a relaxing operation for relaxing the wire, acquire the tension and the displacement of the wire during the relaxing operation, which are detected by the first sensor and the second sensor, respectively, and adjust a control parameter of the endoluminal device based on a rate of change in the tension with respect to the displacement.

Abstract: An operation management system manages operations carried out by people in charge of operation regarding a common operation target, including: an operation information database storing operation information related to implementation of the operations; a start notification unit that notifies each person of the start of each operation when the start notification unit detects occurrence of a predetermined trigger event in the operation target; an operation flow construction unit that constructs an operation flow indicating the operation to be carried out by each person in relation to the trigger event, on the basis of the operation information database; an information providing unit that provides, to each person, the operation information with content suitable for the person in charge of operation on the basis of the operation flow; and a progress notification unit that notifies each person of progress of the operation.

Abstract: A signal separation device for acquiring a source signal from a mixed signal observed by a plurality of sensors includes: a database that stores feature information of a clean signal; separation matrix calculation means for repeatedly performing processes of, based on a separated signal obtained by multiplication of a mixed signal converted into a time-frequency representation by a separation matrix and on the feature information stored in the database, calculating a parameter to be used for an objective function for optimizing the separation matrix, and calculating a separation matrix for minimizing the objective function using the parameter; and output means for outputting a separated signal calculated using the optimized separation matrix obtained by the separation matrix calculation means.

Abstract: An optical device includes: a radiation portion that sends light toward a predetermined position; a lens body including plural lenses that are arranged in an array direction and on which reflection light reflected at the predetermined position is incident; a first support body having a light limiting portion and supporting the radiation portion, the light limiting portion extending in the array direction on the incident side of reflection light relative to the lens body, the light limiting portion limiting incidence of at least a portion of light having an influence on an image based on reflection light; and a second support body supporting the lens body and being movable, relative to the first support body, in an optical axis direction of reflection light.

Abstract: The signal separation device includes: cross product calculation means receiving an input of an observed signal that is a mixture of a plurality of target signals, and calculating a cross product of the observed signal; model calculation means updating a parameter of a model for estimating the cross product with a predetermined algorithm using an inverse matrix of a matrix that represents an estimate of the cross product; inverse matrix calculation means calculating the inverse matrix of a matrix by a SIMD command when the parameter is updated; and separation means calculating the target signals using a matrix representing an estimate of the cross product, the updated parameter, and the observed signal.

Abstract: The present disclosure relates to an apparatus and methods of estimating a traffic volume of moving objects. In particular, the present disclosure estimates the traffic volume based on amounts of traffic volume of the moving objects observed at observation points based on a routing matrix and a visitor matrix. The routing matrix indicates whether moving objects that pass through specific waypoints are to be observed at an observation point. The visitor matrix indicates whether a moving object departing or arriving at the observation point. The present disclosure enables estimating a traffic volume of moving objects on various routes based on observed data with errors in data and varying lengths in observation periods.

Abstract: Provided is a sensor network capable of acquiring, from a data center, learning data composed of a pair of sensor data (input) and a classification label (output) necessary for adding/changing a classification label for updating a classifier while reducing the volume of communication between a sensor and the center. One aspect of the present invention relates to a sensor network, including one or more sensor nodes and a data center. The sensor node includes: an encoding unit for encoding sensor data by an encoder part of an autoencoder; and a transmission unit for transmitting the encoded data. The data center includes: a reception unit for receiving data encoded from sensor data by the encoder part of the autoencoder; a decoding unit for decoding the encoded data by a decoder part of the autoencoder; and a storage unit for storing the decoded data therein.

Abstract: Provided is an acoustic signal enhancement device, including a time-space covariance matrix estimation unit 2 configured to estimate a time-space covariance matrix Rf(n),Pf(n) corresponding to a sound source n, using a power ?t,f(n) of the sound source n and an observation signal vector Xt,f composed of an observation signal xm,t,f from a microphone m; a reverberation suppression unit 3 configured to obtain a reverberation removal filter Gf(n) of the sound source n using the time-space covariance matrix Rf(n),Pf(n), and to generate a reverberation suppression signal vector Zt,f(n) corresponding to the observation signal xm,t,f for an emphasized sound of the sound source n using the reverberation removal filter Gf(n) and the observation signal vector Xt,f; and a sound source separation unit 4 configured to obtain an emphatic sound yt,f(n) of the sound source n and the power ?t,f(n) of the sound source n using the reverberation suppression signal vector Zt,f(n).

Abstract: A learning apparatus according to an embodiment is a learning apparatus that learns a neural network including a linear transformation layer achieved by a weight matrix with a complex number as an element, the learning apparatus including: a formulating unit that formulates a differential equation of a loss function with respect to each of conjugate variables corresponding to input variables of the linear transformation layer and a differential equation of the loss function with respect to each of parameters of the neural network; and a learning unit that learns the parameters of the neural network by backpropagation using the differential equations formulated by the formulating unit.

Abstract: An analyzing device includes separating means that takes matrix data representing a non-negative matrix Y as input, and separate the matrix Y into a plurality of block matrices Yi (i=1, . . . , I) configured of one column or two or more columns of the matrix Y, and updating means that executes repeated updating processing of a matrix Hi and a matrix Ui so that a product of the matrix Hi and the matrix Ui becomes close to the block matrices Yi, in parallel, with regard to at least two or more of the block matrices Yi. The updating means executes the repeated updating processing in parallel, on the basis of a graph structure given in advance in accordance with the matrix Y, so that the distance between predetermined matrices Hi and Hj (j?i, j ? {1, . . . , I}) becomes closer.

Abstract: A sound source separation filter information estimation device (10) estimates a covariance matrix having information on a correlation between sound source spectra and information on a correlation between channels as information on sound source separation filter information for separating an individual sound source signal from a mixed acoustic signal.

Abstract: Assuming that a total number of N selection subjects n (n=1, . . . , N) each select any one of a total number of M selection targets m (m=1, . . . , M), parameter estimation means: inputs acceptable limits ?n,m of each selection subject n and calculates patience ?n and a preference vector ?n, the acceptable limits ?n,m indicating limits of congestion degrees of respective selection subjects m that are acceptable to the selection subject n, the patience ?n indicating the largest value of the acceptable limits ?n,m of the selection subject n with respect to the selection targets m, the preference vector ?n indicating preference of the selection subject n when selecting the selection targets m; and estimates parameters of a model for obtaining acceptable limits ?i,m of each of a total number of I(>N) selection subjects i (i=1, . . . , I) by using the calculated patience ?n and the calculated preference vector ?n.

Abstract: A signal separation device for acquiring a source signal from a mixed signal observed by a plurality of sensors includes: a database that stores feature information of a clean signal; separation matrix calculation means for repeatedly performing processes of, based on a separated signal obtained by multiplication of a mixed signal converted into a time-frequency representation by a separation matrix and on the feature information stored in the database, calculating a parameter to be used for an objective function for optimizing the separation matrix, and calculating a separation matrix for minimizing the objective function using the parameter; and output means for outputting a separated signal calculated using the optimized separation matrix obtained by the separation matrix calculation means.

Abstract: The signal separation device includes: cross product calculation means receiving an input of an observed signal that is a mixture of a plurality of target signals, and calculating a cross product of the observed signal; model calculation means updating a parameter of a model for estimating the cross product with a predetermined algorithm using an inverse matrix of a matrix that represents an estimate of the cross product; inverse matrix calculation means calculating the inverse matrix of a matrix by a SIMD command when the parameter is updated; and separation means calculating the target signals using a matrix representing an estimate of the cross product, the updated parameter, and the observed signal.

Abstract: A reading apparatus includes: a light-shielding member having a thickness T in which plural through-holes having a diameter D through which light reflected from a document passes are formed at an interval P; an optical member that includes a surface separated from and facing the light-shielding member and including lenses formed at positions facing the through-holes, in which a light-shielding film is formed on at least the surface other than a lens surface of the lens, and a distance L from the light-shielding member in an optical axis direction of the lens satisfies 0<L?T (P/D?1); and a substrate that includes an element that receives light passing through the optical member.

Abstract: A communication system in which a plurality of communication apparatuses in time synchronization with one another are connected over a network is provided. Each of the communication apparatuses includes management means for allowing transmission in accordance with a predetermined communication schedule, of cyclically transmitted first data to be used for control of a manufacturing apparatus or a production facility, second data which should be delivered to a destination within a designated time period, and third data different from the first and second data, selection means for selecting a data transfer scheme for each piece of data to be transmitted from among an on-the-fly scheme, a cut-through scheme, and a store-and-forward scheme based on the communication schedule, and a transmission and reception circuit which transfers each piece of data received from another communication apparatus to yet another communication apparatus in accordance with the data transfer scheme determined for that data.

Abstract: A reading apparatus includes: a light-shielding member having a thickness T in which plural through-holes having a diameter D through which light reflected from a document passes are formed at an interval P; an optical member that includes a surface separated from and facing the light-shielding member and including lenses formed at positions facing the through-holes, in which a light-shielding film is formed on at least the surface other than a lens surface of the lens, and a distance L from the light-shielding member in an optical axis direction of the lens satisfies 0<L?T (P/D?1); and a substrate that includes an element that receives light passing through the optical member.