Abstract: A propeller guard 2 includes: a propeller guard body 10 configured to surround a propeller 30 of a flight vehicle 20; and a rotating member 40 provided on a side surface of the propeller guard body 10, in which the rotating member 40 is able to rotate around at least a horizontal base axis in a case where the rotating member 40 is in contact with a vertical plane located outside the propeller guard body 10.

Abstract: An object of the present disclosure is to provide a method for remotely identifying a utility pole position and estimating a state of an overhead optical fiber cable. The present disclosure is a method for identifying a utility pole position including identifying a boundary region of a vibration distribution as a utility pole position, from a vibration distribution pattern obtained by measuring strain amounts with respect to distances of an optical fiber by an optical fiber vibration distribution measuring method at each time and sequentially stacking the strain amounts.

Abstract: A band calculation device (1) according to the present disclosure, in the band calculation device (1) which calculates a band of the link (L) of a relay network (NWR) which is constituted by nodes (N) and links (L) and which relays information transmitted and received between a plurality of communication bases, includes an input unit (21) that receives an input of topology information indicating ports (P) of nodes (N), connection destination ports of the ports (P), and links, respectively, path information indicating primary paths that relay the information when a failure does not occur, paths including backup paths that relay the information when the failure occurs in the primary path, and via transmission ports that are the ports (P) for transmitting the information in the paths, respectively, and traffic information indicating the port (P) and traffic statistic value of the port (P), respectively, and a calculation unit (22) that calculates a band of the link (L) on the basis of the topology information, t

Abstract: The present disclosure is an optical line test system that detects a distribution of loss points of an optical line in a longitudinal direction, using a coherent light measurement device, applies vibration to facility disposed on a path of the optical line, detects a vibration point of the optical line in a longitudinal direction upon applying the vibration, using the coherent light measurement device, and identifies the loss point based on correspondence between the detected loss point and vibration point.

Abstract: A wireless communication monitoring system for monitoring a hardware failure of a wireless communication unit of a wireless communication device using a remote monitoring control device, in which the wireless communication device transmits or receives a predetermined radio signal to or from a monitoring device added or attached to the host device to perform a life and death check for checking an operation, and the remote monitoring control device detects a hardware failure of the wireless communication unit of the wireless communication device on the basis of a result of the life and death check received from the wireless communication device. This makes it possible to detect a failure that cannot be detected from information obtained from a device state request to a wireless communication device of the related art.

Abstract: A wireless communication management apparatus (100) includes a correction unit (1131), an evaluation unit (1132), and a determination unit (1133). The correction unit (1131) corrects, on the basis of a characteristic of each terminal, an error rate in wireless communication between a base station and the terminal based on wireless environment information collected from one or more terminals configured to wirelessly communicate with the base station. The evaluation unit (1132) evaluates the corrected error rate. The determination unit (1133) determines a modulation/demodulation scheme for each terminal on the basis of the evaluation result of the evaluation unit.

Abstract: Included are: a vector estimation unit that receives a real number spectrogram and an acoustic intensity vector as inputs and outputs a reverberation component of an acoustic intensity vector; an angle mask extraction unit that receives the acoustic intensity vector as an input and extracts an angle mask; a time-frequency mask estimation unit that receives the real number spectrogram, the acoustic intensity vector from which the reverberation component has been subtracted, and the angle mask as inputs, and outputs a time-frequency mask for noise suppression and sound source separation; a first sound source direction-of-arrival derivation unit that derives a sound source direction-of-arrival on the basis of an acoustic intensity vector obtained by applying the time-frequency mask to the acoustic intensity vector from which the reverberation component has been subtracted; a second sound source direction-of-arrival derivation unit that derives a sound source direction-of-arrival on the basis of an acoustic inten

Abstract: The present invention has an object of providing an arithmetic apparatus, a facility management method, and a program that make it possible to acquire current tension applied to outdoor structures in a short period of time and make a bearing determination. The arithmetic apparatus according to the present invention calculates the dip degree of a cable and a distance between poles from the 3D model data of the cable according to Math. C1 and calculates the tension of each cable between the poles from the dip degree, the distance between the poles, and the weight of the cable per unit length according to Math. C2 (when no wind blows) or Math. C4 (when wind blows). Further, the arithmetic apparatus according to the present invention calculates a combined load obtained by converting the tension and the load of the accessory of the poles into an arbitrary position on the poles according to Math. C3.

Abstract: A rule generation device according to an embodiment includes: a database in which, for each fault, fault factor information including a fault factor part and a fault factor, fault events that occur due to this fault, a rule ID associated with a rule including a condition part and a result part are registered in association with one another; an importance degree determination unit determining, when fault events of a new fault that is a newly occurred fault are registered with the database, degrees of importance of the fault events of the new fault based on at least one of values calculated through statistical processing or analytical processing for information other than the fault events or overall information about the fault events, which are registered with the database; and a rule generation unit generating a rule for the new fault based on the degrees of importance.

Abstract: A calculation unit (22) sets each frame, of a moving image including a plurality of frames, as a target frame, calculates a motion vector with reference to a reference frame over an entirety of the target frames, and calculates an index indicating a magnitude of change between a key frame and the target frame, which is represented by using the motion vector, a judgement unit (25) judges whether or not the calculated index is equal to or greater than a predetermined threshold value, a first detection unit (27) detects a region indicating an object from the target frame by using an object detection model in a case in which the index is equal to greater than the threshold value, a second detection unit (28) detects a region on the target frame, which is obtained by correcting a position of a region detected in the reference frame by using the motion vector in a case in which the index is less than the threshold value, and an output unit (30) outputs information of the region detected by the first detection unit

Abstract: An object is to provide a communication system in which there are no restrictions on a communicable area and it is not necessary to install communication software on a wireless device. A communication system according to the present invention is configured so that the functions of a wireless access point are separated into a front-end unit on a wireless terminal side and a back-end side on the Internet side, radio signal processing functions supporting a wireless scheme of the wireless terminal are deployed only on the back end, and only relatively simple processing functions such as E/O conversion are deployed on the front end near the wireless terminal 311.

Abstract: An object of the present invention is to provide a communication method, a transceiver, a relay, a communication system, and a program capable of performing high-speed communication even in a case where there is an obstacle between two separated points in water. In this communication method, two points each confirm the other's position by using sound wave communication which is likely to be diffracted as a wave due to a relatively small frequency and a large wavelength. Since the communication method uses optical wireless communication in which straightness is high but high-speed communication is possible, a path for communication while avoiding an obstacle via a relay is calculated. In the communication method, the relay is guided and moved to an appropriate place according to the calculated path, and a signal is transmitted and received by using optical wireless communication using the relay that has moved to an appropriate place.

Abstract: An AD converter includes: an integration unit that uses an input voltage as an initial value and repeats an operation of integrating one or both of two types of unit voltages with the input voltage, thereby generating an integrated voltage; a switching threshold voltage unit that includes two types of threshold voltages causing the operation of integrating to be terminated; a comparator that compares the integrated voltage with the threshold voltages; an integration determination unit that, before the operation of integrating is started, causes the comparator to compare the input voltage with a rough adjustment threshold voltage corresponding to a larger one of the unit voltages; a unit voltage switching control unit that, when the rough adjustment threshold voltage is larger than the input voltage, controls the integration unit to generate the integrated voltage by using the two types of unit voltages; and a single unit voltage control unit that, when the rough adjustment threshold voltage is smaller than th

Abstract: An object of the present invention is to provide an optical communication system and an optical communication method capable of achieving a long transmission distance with a passive element and obtaining redundancy of a ring topology. The optical communication system according to the present invention is a PON system having a ring configuration, in which an unequal branch optical splitter having a left-right symmetrical configuration is disposed in a trunk fiber wired in a loop shape. An OLT and an ONU have a configuration in which two sets of Tx (transmitter) and Rx (receiver) are mounted. Two sets of Tx (transmitters) and Rx (receivers) in each of a plurality of ONUs are respectively connected to left and right symmetrical ports of one unequally branched light beam SP.

Abstract: An underground radar device and a method thereof are provided that do not require replacement of antennas for transceiving in conformity with the width of a road, and can achieve exploration of a buried object with a single scan. An underground radar device includes a transmission array antenna and a reception array antenna, and further includes a position variable mechanism capable of changing intervals between antenna elements of the transmission array antenna and the reception array antenna while keeping all the intervals equal. The position variable mechanism includes a drive unit, a plurality of crossbars constituting an expandable link, and a plurality of link sections for coupling so as to change inclination angles of a V-shape and an inverted V-shape of the expandable link.

Abstract: A wireless communication system in which wireless stations perform transmission, a plurality of wireless modules that are operated in a shared frequency band being installed in the wireless stations, wherein the wireless stations each include means for notifying a control device of environment information that includes capacity information regarding the wireless station and information regarding a surrounding wireless environment, and setting frequency channels in the plurality of wireless modules, the wireless stations being notified of the frequency channels by the control device, and the control device includes means for calculating a frequency channel of each wireless module of each wireless station based on the environment information collected from each wireless station, following a control guideline that is determined in advance, and notifying the wireless stations of the frequency channels.

Abstract: A technique that automatically adjusts a motion given to a projection target using a perceptual model is provided. A motion vector generation apparatus includes a first parameter generation unit that generates a first parameter that is a parameter for scaling a motion vector based on a perceptual difference between a projection result reproduction image which is an image that is obtained when a projection target onto which a projection image obtained based on the motion vector has been projected is photographed and a warped image which is an image generated by distorting an image obtained when the projection target is photographed by a perceptual amount of motion perceived when the projection result reproduction image is viewed, and a motion vector reduction unit that scales the motion vector using the first parameter.

Abstract: A communication device includes: a MAC unit that processes a main signal including a payload, and determines a communication timing of the main signal; a communication unit that performs, based on the communication timing, at least one of transmission processing for E/O converting the main signal acquired from the MAC unit, and transmitting the main signal to a communication counterpart device, and reception processing for O/E converting the main signal received from the communication counterpart device; a main signal transmission line through which the main signal is transmitted between the MAC unit and the communication unit; and a control information transmission line that is provided separately from the main signal transmission line, and through which communication timing data that is data indicating the communication timing is transmitted from the MAC unit to the communication unit.

Abstract: A text generation apparatus includes a memory and a processor configured to execute acquiring a reference text based on an input text and information different from the input text; and generating a text based on the input text and the reference text, wherein the acquiring and the generating are implemented as neural networks based on learned parameters.

Abstract: The present disclosure has been made in view of such a problem, and an object of the present disclosure is to make it possible to predict fluctuation of unsteady traffic with a small amount of calculation.