Abstract: A wireless communication system switches a connection destination of a ground wireless station from a first node station to a second node station. The ground wireless station establishes a link with an absolute node station when a link with the second node station cannot be established before a link with the first node station is disconnected. The absolute node station is connectable to the ground wireless station in an entire communication area and has a connection priority lower than connection priorities of the first node station and the second node station. The ground wireless station switches the connection destination from the first node station to the absolute node station. Thereafter, the ground wireless station switches the connection destination to the second node station after a link with the second node station is established.

Abstract: The present disclosure generates an optical spectrogram, representing a temporal change in frequency characteristics, using a plurality of spectral data measured by an OFDR measurement instrument at different times, and filters the optical spectrogram in both a time direction and a frequency direction.

Abstract: Data search by secure computation is efficiently performed and retrieved data is safely provided. A searcher terminal acquires condition data. The searcher terminal extracts a feature from the condition data. The searcher terminal encrypts the feature of the condition data. A secure search apparatus acquires a search result indicating a ciphertext of target data corresponding to a feature of target data similar to the feature of the condition data while keeping the feature of the target data and the feature of the condition data secret. The secure search apparatus transmits the search result to an encryption apparatus and the searcher terminal. The searcher terminal acquires the ciphertext of the target data indicated by the search result. The encryption apparatus transmits a decryption key to the searcher terminal. The searcher terminal decrypts the ciphertext of the target data using the decryption key.

Abstract: A reception unit, in which a range of an electric band is in a range from ?Be to +Be and Be >B/2 is satisfied, receives signal light of a symbol rate B generated by optically modulating transmission data, performs digital coherent reception by interfering the received signal light with the local oscillation light generated by the local oscillation light source, converts the signal light into an electric digital signal, and output the digital signal, and a frequency offset compensation unit provided in a digital signal processing unit estimates a frequency offset amount generated in the digital signal in a range of ?B/2 or more and +B/2 or less in accordance with a frequency difference between the signal light and the local oscillation light, and perform frequency offset compensation for the digital signal on the basis of the estimated frequency offset amount to compensate the frequency offset amount in a range of ?B/2 or more and +B/2 or less and compensate so as to remain the frequency offset amount of an

Abstract: A line-of-sight determination method includes: a point cloud data acquisition step of acquiring point cloud data including a first position indicating a position of a first wireless station and a plurality of second positions indicating positions on a structure serving as a candidate in which a second wireless station opposing the first wireless station is to be installed; and a line-of-sight determination step of determining whether or not there is a line of sight between the first position and at least one of the second positions, and determining whether or not there is a line of sight between the first wireless station and the structure based on the determination result.

Abstract: A detection device includes processing circuitry configured to identify candidate bots using flow data, use the flow data to count a number of the candidate bots communicating with servers, for each of the servers, and determine servers communicating with a predetermined number or more of the candidate bots among the servers to be malicious servers, and detect candidate bots communicating with the malicious servers that are determined among the candidate bots to be malicious bots.

Abstract: In order to solve the problems described above, an object of the present invention is to provide an optical communication system and a control method that automatically adjust a branching ratio of an optical splitter in accordance with a connection of a new ONU. An optical communication system according to the present invention causes an operation system or a DBA (Dynamic Bandwidth Allocation) function and a determining unit of a branching ratio of an optical splitter to cooperate with each other, adjusts the branching ratio so as to enable ranging with an active ONU, and takes into consideration an initial connection sequence through which an ONU is newly connected.

Abstract: An elastic wiring includes: an elastic tube; a conductor wire arranged within the tube; and fixing portions that fix the conductor wire and the tube at both ends of the tube in the lengthwise direction, wherein the length of the conductor wire between the fixing portions when the tube is in an unextended state is longer than the length of the tube between the fixing portions.

Abstract: A silicon nitride core is formed on a silicon core via a first silicon oxide layer, and a germanium pattern caused to selectively grow in an opening penetrating through a second silicon oxide layer formed on the silicon nitride core and the first silicon oxide layer is formed on a lower silicon pattern formed to be continuous with the silicon core, thereby constituting a Ge photodiode.

Abstract: The present disclosure provides a device that accurately measures vibration at a designated position of a sensing fiber without using digital signal processing to compensate for distance fluctuation. Digital signal processing for correcting fluctuation of a measurement distance due to a frequency offset of a beat signal due to vibration, which is a measurement target, is simplified. In the present disclosure, vibration at a designated position of the sensing fiber is accurately measured without using the digital signal processing to compensate for the distance fluctuation. A spectrum analysis length of an electrical field E(?n) of backscattered light is set to be larger than a delay deviation Nd due to frequency modulation caused by dynamic strain. An index of tolerance of vibration distribution measurement to the delay deviation Nd is also clarified.

Abstract: An information extracting device includes an acquiring unit that acquires, with regard to each information source, a data group made up of data including a content relating to an object, a location where the content was recorded, and a date and time at which the content was recorded, a generating unit that generates a word vector of which the date and time, the location, content using a weight based on the date and time, and a type of the content, are each components, for each of the data of the data group, a distance calculating unit that calculates a distance among the word vectors, a classifying unit that classifies each of data of the data group on the basis of the distance among the word vectors, and an extracting unit that calculates a reliability with regard to the classification, and extracts data from the data group on the basis of the reliability.

Abstract: An estimation apparatus clusters a group of voice signals including a voice signal having a speaker attribute to be estimated into a plurality of clusters. Subsequently, the estimation apparatus identifies, from the plurality of clusters, a cluster to which the voice signal to be estimated belongs. Next, the estimation apparatus uses a speaker attribute estimation model to estimate speaker attributes of respective voice signals in the identified cluster. After that, the estimation apparatus estimates an attribute of the entire cluster, by using an estimation result of the speaker attributes of the voice signals in the identified cluster, and outputs an estimation result of the speaker attribute of the entire cluster, as an estimation result of the speaker attribute of the voice signal to be estimated.

Abstract: Provided is an IQ optical modulator including a nest-type MZ optical waveguide having optical modulation regions of I channel and Q channel End portions of an input optical waveguide and an output optical waveguide of the IQ optical modulator are located on a same edge face of a chip of the IQ optical modulator, an optical cross waveguide is included in which an optical waveguide between a first optical combiner and a second optical combiner of the nest-type MZ optical waveguide and the input optical waveguide cross each other, a first optical divider is provided between the I-channel optical modulation region and the Q-channel optical modulation region, and a light propagation direction in the first optical divider and a light propagation direction in the optical modulation regions are opposite to each other.

Abstract: A communication device in a communication system in which functions that are converted to software are configured as a plurality of components, and the functions are realized as a result of the components being respectively executed by a plurality of communication devices that are connected to a network, the communication device including a sorting unit configured to acquire a signal that is transmitted by a first component and transmit the signal to a second component indicated by destination information that is added to the signal by the first component.

Abstract: A sound field generation apparatus includes: a first modulation unit modulating an ultrasonic wave signal according to a prescribed modulation system; a second modulation unit modulating the ultrasonic wave signal according to a modulation system different from the modulation system of the first modulation unit; a filter unit changing frequency characteristics of an audible range signal used in modulation of the second modulation unit; a first ultrasonic wave output unit outputting a first ultrasonic wave signal modulated by the first modulation unit; and a second ultrasonic wave output unit outputting a second ultrasonic wave signal modulated by the second modulation unit, wherein the filter unit is set to have filter characteristics to cancel a first audible sound reproduced by the first ultrasonic wave signal with a second audible sound reproduced by the second ultrasonic wave signal at a control point provided outside the sound field.

Abstract: A resource determination device according to a storage unit configured to store a model indicating a relationship of: a processing load of a virtual machine; a processing performance of the virtual machine; a resource operational status of a physical machine accommodating the virtual machine; and a resource operational status of the virtual machine, with respect to an amount of resources allocated to the virtual machine, and a calculation unit configured to calculate the amount of resources allocated to the virtual machine in a way such that a requirement for the processing performance of the virtual machine and a policy of the resource operational status of the virtual machine are each satisfied based on a monitoring result of the resource operational status of the physical machine accommodating the virtual machine, the processing load of the virtual machine, and the model stored in the storage unit.

Abstract: The end-of-talk prediction device (10) of the present invention comprises: a divide unit (11) for dividing, using delimiter symbols indicating delimitations within segments, a string in which the utterance in the dialog has been text-converted by speech recognition, the delimiter symbols included in the result of the speech recognition; and an end-of-talk prediction unit (12) for predicting, using an end-of-talk prediction model (14), whether the utterance corresponding to the divided string divided by the divide unit (11) is an end-of-talk utterance of the speaker.

Abstract: An atomicity securing apparatus that secures atomicity of collaborative services includes: an atomicity determination unit configured to determine, in a case in which there is an error response to a first service among a plurality of types of services configuring the collaborative services in response to a request to execute the plurality of types of services, whether or not a process for updating second services other than the first service in the plurality of types of services is completed in consideration of inquiry to a collaborative service execution apparatus that executes the collaborative services; a cancellation API request generation unit configured to generate a cancellation API request for canceling the process for updating the second services that is completed; and a cancellation API request transmission unit configured to transmit the generated cancellation API request to a server that provides the second services.

Abstract: The accuracy of unsupervised anomalous sound detection is improved. An anomalous sound generation unit 12 generates a pseudo-anomalous sound by associating a sound obtained from a predetermined device with a probability distribution followed by a sound obtained from a desired device group. A threshold value setting unit 13 sets a threshold value so that all anomaly scores calculated from the pseudo-anomalous sound are determined to be anomalous. A parameter update unit 14 uses an obtained normal sound and an obtained anomalous sound, or a threshold value and a value based on the obtained anomalous sound, to update a parameter so to reliably determine an anomalous sound as anomalous and minimize the probability of determining a normal sound as anomalous.

Abstract: An integrated processing resume device includes: a request receive part configured to allow an input of a request for an integrated order, the request for an integrated order being a request for integrating a plurality of wholesale services; a resource management part configured to record whether or not each of individual instructions of the wholesale service called by an execution of the integrated order has been successfully executed; and an order resume part configured to, when an individual instruction has not been successfully executed and the integrated order is thereby suspended, then, at a time of resuming the integrated order, reference whether or not an already-having-been-executed individual instruction has been successfully executed, from the resource management part, and, while skipping re-execution of a having-been-successfully-executed individual instruction, execute a not-having-been-successfully-executed individual instruction or a not-yet-having-been-executed individual instruction.