Abstract: A temperature measuring device 10 includes a spectrum data acquirer 11 configured to acquire spectrum data that indicates a spectrum of Brillouin scattered light generated by causing light to be incident on an optical fiber FUT, a spectrum data analyzer 12 configured to analyze the spectrum data and to obtain a Brillouin frequency shift amount, a corrector 13 configured to predict an amount of change in the Brillouin frequency shift amount due to structural relaxation of the optical fiber FUT from a thermal history of the optical fiber FUT, and configured to correct the Brillouin frequency shift amount obtained by the spectrum data analyzer 12 using the predicted amount of change, and a temperature calculator 14 configured to obtain a temperature of the optical fiber FUT on the basis of the Brillouin frequency shift amount corrected by the corrector 13.

Abstract: A data transmission device includes a transmission processing unit that transmits sensing data of a detection target in response to occurrence of an event that satisfies a condition specified as an event related to the detection target, in which the sensing data is data including type information indicating a type of sensing data, in a case where whether or not the type of sensing data is a specific type is determined, and as a result, the type of sensing data is an unspecific type, the transmission processing unit performs processing of storing unspecific type information indicating that the type of sensing data is an unspecific type in the type information, and generating and transmitting the sensing data including text data in which detection result information indicating a detection result of the detection target by text and type information indicating a data type of the detection result information are stored.

Abstract: Functions can be flexibly changed according to various use cases. An information processing system according to an embodiment includes a sensor data acquisition unit that acquires sensing data acquired by a sensor, a processing unit including an inference unit that executes inference using the sensing data as an input, and a switching unit that switches the inference unit according to a use case.

Abstract: An optical fiber characteristic measurement device (1) includes a light detector (16) configured to detect Brillouin scattered light (LS) obtained by causing light to be incident on an optical fiber (FUT); a signal processor (18b) configured to obtain, on the basis of a detection signal (S1) which is output from the light detector, a first Brillouin gain spectrum (B1) which is a spectrum of the Brillouin scattered light obtained in a case where a spectral width of the light incident on the optical fiber is a first width and a second Brillouin gain spectrum (B2) which is a spectrum of the Brillouin scattered light obtained in a case where the spectral width of the light incident on the optical fiber is a second width larger than the first width; and a measurer (18c) configured to measure characteristics of the optical fiber on the basis of the first Brillouin gain spectrum and the second Brillouin gain spectrum.

Abstract: The invention provides a liquid crystal polyester resin which not only has a low-dielectric tangent, but also is excellent in balance between heat resistance and processing stability. The liquid crystal polyester resin comprises: a structural unit (I) derived from an aromatic hydroxycarboxylic acid; a structural unit (II) derived from an aromatic diol compound; and a structural unit (III) derived from an aromatic dicarboxylic acid, wherein the structural unit (I) is a structural unit (IA) derived from 6-hydroxy-2-naphthoic acid, the structural unit (III) contains a structural unit (IIIA) derived from terephthalic acid, a structural unit (IIIB) derived from isophthalic acid, and a structural unit (IIIC) derived from 2,6-naphthalenedicarboxylic acid, the dielectric tangent at a measurement frequency of 10 GHz is 1.50×10?3 or less, the melting point is 290° C. or more, and the difference in temperature between the melting point and the crystallization point is 30° C. or more.

Abstract: The present technology relates to an information processing apparatus, an information processing method, and a program that enable processing with maintained accuracy to be performed using a recognition model according to a noise level. A model switching unit that switches a recognition model according to an amount of noise of an imaged image is provided, and the model switching unit switches between a first recognition model trained with an image without noise and a second recognition model trained with an image with noise. The recognition model is used for processing by an AI function. It is applicable to, for example, a system including a surveillance camera and a server that distributes data from the surveillance camera.

Abstract: The invention provides a liquid crystal polyester resin which not only has a low-dielectric tangent, but also is excellent in balance between heat resistance and processing stability. The liquid crystal polyester resin comprises: a structural unit (I) derived from an aromatic hydroxycarboxylic acid; a structural unit (II) derived from an aromatic diol compound; and a structural unit (III) derived from an aromatic dicarboxylic acid, wherein the structural unit (I) contains a structural unit (IA) derived from 6-hydroxy-2-naphthoic acid, the structural unit (III) contains a structural unit (IIIA) derived from terephthalic acid, and a structural unit (IIIB) derived from isophthalic acid, the dielectric tangent at a measurement frequency of 10 GHz is 1.50×10?3 or less, the melting point is 295° C. or more, and the difference between the melting point and the crystallization point is 35° C. or more.

Abstract: The invention provides a liquid crystal polyester resin which not only has a low-dielectric tangent, but also is excellent in balance between heat resistance and processing stability. The liquid crystal polyester resin comprises: a structural unit (I) derived from an aromatic hydroxycarboxylic acid; a structural unit (II) derived from an aromatic diol compound; and a structural unit (III) derived from an aromatic dicarboxylic acid, wherein the structural unit (I) contains a structural unit (IA) derived from 6-hydroxy-2-naphthoic acid, the structural unit (III) contains a structural unit (IIIA) derived from isophthalic acid and a structural unit (IIIB) derived from 2,6-naphthalenedicarboxylic acid, the dielectric tangent at a measurement frequency of 10 GHz is 1.50×10?3 or less, the melting point is 290° C. or more, and the difference in temperature between the melting point and the crystallization point is 30° C. or more.

Abstract: A composite includes a liquid crystal polyester that is soluble in a solvent; and liquid crystal polymer particles that are insoluble in a solvent, have a melting point of 270° C. or more, and have a cumulative distribution 50% diameter D50 of 20 ?m or less and a cumulative distribution 90% diameter D90 of 2.5 times or less the D50 in a particle size distribution.

Abstract: An optical fiber characteristics measurement system includes: an optical fiber characteristics measurement device including: an emission port configured to emit probe light; and an incidence and emission port connected to one end of a measurement target optical fiber and configured to emit pump light, stimulated Brillouin scattered light generated within the measurement target optical fiber being incident on the incidence and emission port; a first optical fiber having one end connected to the emission port and configured to guide the probe light to another end of the measurement target optical fiber; and an optical isolator provided between another end of the first optical fiber and the another end of the measurement target optical fiber, and configured to cause the probe light guided by the first optical fiber to be incident on the another end of the measurement target optical fiber.

Abstract: An optical fiber characteristic measurement apparatus (1) includes: a light source (11) configured to output a laser beam of which frequency is modulated; an incident part (12, 13, 14, and 15) configured to make the laser beam output from the light source be incident from one end and another end of an optical fiber (FUT) as continuous light (L1) and pulsed light (L2), respectively; a light detector (16) configured to detect light projected from the optical fiber and output a detection signal (D1); and a detector (17 and 18a) configured to detect, in a first period (T1) in which scattering light based on the continuous light and the pulsed light is projected from the optical fiber and a second period (T2) shorter than the first period, in which the scattering light is not projected from the optical fiber, the scattering light based on integrated values acquired by integrating the detection signal for a predetermined time.

Abstract: An optical fiber characteristic measurement apparatus (1) includes: a light source (11) configured to output a laser beam of which frequency is modulated; an incident part (12, 13, 14, and 15) configured to make the laser beam output from the light source be incident from one end and another end of an optical fiber (FUT) as continuous light (L1) and pulsed light (L2), respectively; a light detector (16) configured to detect light projected from the optical fiber and output a detection signal (D1); and a detector (17 and 18a) configured to detect, in a first period (T1) in which scattering light based on the continuous light and the pulsed light is projected from the optical fiber and a second period (T2) shorter than the first period, in which the scattering light is not projected from the optical fiber, the scattering light based on integrated values acquired by integrating the detection signal for a predetermined time.

Abstract: An apparatus for producing ultrafine fibers is configured to produce ultrafine fibers by melting and drawing raw filaments. The apparatus for producing ultrafine fibers comprises: a plurality of raw filament passages arranged in a straight row; and a laser irradiation device for irradiating a plurality of raw filaments with a laser beam so as to melt, oscillate and vibrate the plurality of raw filaments after the plurality of raw filaments have passed through the respective raw filament passages together with airstreams. Specifically, the laser irradiation device is configured to output a focused laser beam having a diameter decreasing as distance from the laser irradiation device increases, and having a beam axis parallel to a direction of the row of the plurality of raw filament passages.

Abstract: The apparatus for producing ultrafine fibers includes a nozzle portion, a laser irradiation unit, and a drawing chamber. The nozzle portion has an inlet for feeding a raw fiber, a first jet outlet which communicates with the inlet and jets a first drawing gas stream for delivering and drawing the raw fiber, and a second jet outlet which is arranged in the periphery of the first jet outlet and jets a second drawing gas stream. The laser irradiation unit on which the nozzle portion is installed irradiates a laser light to the raw fiber delivered from first jet outlet to melt the raw fiber. The drawing chamber draws the melted raw fiber by using the first drawing gas stream and the second drawing gas stream which are jetted from the nozzle portion.

Abstract: A method for producing a substrate having a concavity and convexity pattern includes: a step for applying a sol containing a silica precursor on a substrate to form a coating film; a step for drying the coating film; a pressing step for pressing a mold having a concavity and convexity pattern against the dried coating film with a pressing roll; a step for peeling off the mold from the coating film; and a step for baking the coating film to which the concavity and convexity pattern has been transferred. The coating film is dried in the drying step so that the ratio of weight of the coating film to dried weight of the coating film is in a range of 1.4 to 8.8, the dried weight being obtained by baking the coating film at a temperature of 100 degrees Celsius. The coating film may be heated in the pressing step.

Abstract: Provided is an optical fiber characteristics measurement device that is provided with: a light source for emitting laser light modulated by a specified modulation frequency; an incident means for receiving the laser light from the light source as continuous light and pulse light from one end and the other end of an optical fiber, respectively; and a light detector for detecting light emitted from the optical fiber, the optical fiber characteristics measurement device measuring the characteristics of the optical fiber using the detection results of the light detector, wherein the optical fiber characteristics measurement device is characterized in being provided with a synchronous detector that extracts, from among the detection signals output from the light detector, detection signals obtained by detecting the light in the vicinity of a measurement point set in the optical fiber, and synchronously detects the extracted detection signals using a synchronization signal having a specified period.

Abstract: A method for manufacturing an optical substrate includes: a step for preparing a long film-shaped mold; a step for preparing a sol; a step for forming a coating film of the sol on a substrate; a step for drying the coating film; a step for pressing a pattern surface of the film-shaped mold against the dried coating film with a pressing roll while feeding the film-shaped mold to the pressing roll; a step for releasing the film-shaped mold from the coating film; and a step for baking the coating film to which the concave and convex pattern has been transferred.

Abstract: A method for producing a substrate having a concavity and convexity pattern includes: a step for applying a sol containing a silica precursor on a substrate to form a coating film; a step for drying the coating film; a pressing step for pressing a mold having a concavity and convexity pattern against the dried coating film with a pressing roll; a step for peeling off the mold from the coating film; and a step for baking the coating film to which the concavity and convexity pattern has been transferred. The coating film is dried in the drying step so that the ratio of weight of the coating film to dried weight of the coating film is in a range of 1.4 to 8.8, the dried weight being obtained by baking the coating film at a temperature of 100 degrees Celsius. The coating film may be heated in the pressing step.

Abstract: An optical fiber characteristic measuring device of the present invention includes: a light source which emits laser light modulated at a predetermined modulation frequency; an incident section which causes the laser light from the light source as continuous light and pulsed light to be incident from one end and other end of an optical fiber respectively; a timing adjuster which causes light emitted from the optical fiber to pass therethrough at a predetermined timing; and a light detector which detects the light which passes through the timing adjuster, and measures a characteristic of the optical fiber by using a detection result of the light detector, and the device includes: a synchronous detector which synchronously detects the detection result of the light detector by using a synchronization signal having a predetermined frequency; and a frequency setter which changes the frequency of the synchronization signal in a case where the modulation frequency at the light source is an integer multiple of the fr

Abstract: Provided is an optical fiber characteristics measurement device that is provided with: a light source for emitting laser light modulated by a specified modulation frequency; an incident means for receiving the laser light from the light source as continuous light and pulse light from one end and the other end of an optical fiber, respectively; and a light detector for detecting light emitted from the optical fiber, the optical fiber characteristics measurement device measuring the characteristics of the optical fiber using the detection results of the light detector, wherein the optical fiber characteristics measurement device is characterized in being provided with a synchronous detector that extracts, from among the detection signals output from the light detector, detection signals obtained by detecting the light in the vicinity of a measurement point set in the optical fiber, and synchronously detects the extracted detection signals using a synchronization signal having a specified period.