Abstract: An aspect of the present disclosure enables prediction of a refractive index profile of a transparent glass preform obtained in a production stage of a glass particulate deposit by a VAD method. The glass preform production apparatus includes a gas supply system, a burner, and a signal processing device. The signal processing device includes an imaging device that images a particle flow of glass fine particles, and a calculation unit. The calculation unit extracts, at any one or more time points during a period from the start of production to the end of production of the glass particulate deposit, image data representing a state of at least the flame or the particle flow from an image obtained by the imaging device, and regressively predicts a refractive index profile of the transparent glass preform serving as an objective variable from an explanatory variable including the image data.

Abstract: An information processing apparatus includes a first memory, a second memory, and a control circuit. The first memory stores a first table where entries, which indicate forwarding methods for packets, are stored at positions corresponding to hash values calculated from header information of the packets. The second memory stores a second table that is larger than the first table. The control circuit detects, when the first table is updated, a conflict state where there is conflict between storage positions of different entries in the first table. The control circuit moves entries stored in the first table to the second table in response to the detecting of the conflict state. The control circuit detects resolution of the conflict state when the second table is updated. In response to the detecting of the resolution, the control circuit moves the entries stored in the second table to the first table.

Abstract: A valve device includes a body, a solenoid valve, and a manual valve mounted to the body. The manual valve being configured to open and close the gas flow channel via a manual operation. The gas flow channel includes a first flow channel including the valve-side opening portion, and a second flow channel including the tank-side opening portion, and includes an intersection portion in which a first center axis that is a center axis of the first flow channel and a second center axis that is a center axis of the second flow channel intersect with each other. A center axis of the solenoid valve coincides with an extension line of the first center axis and a center axis of the manual valve coincides with an extension line of the second center axis.

Abstract: A valve device includes a body having a gas flow path. When the gas is charged, the first flow path is located upstream of the intersecting portion, and the second flow path is located downstream of the intersecting portion. The gas flow path has a check valve mechanism and a drive mechanism. The check valve mechanism opens a valve when the gas is charged and closes the valve when the gas charge is completed, and the drive mechanism opens the valve of the check valve mechanism and holds the open state of the valve of the check valve mechanism when the gas is discharged from the tank. The check valve mechanism includes a valve seat, and the valve seat is disposed in the first flow path.

Abstract: An information processing apparatus includes a first memory, a second memory, and a control circuit. The first memory stores a first table where entries, which indicate forwarding methods for packets, are stored at positions corresponding to hash values calculated from header information of the packets. The second memory stores a second table that is larger than the first table. The control circuit detects, when the first table is updated, a conflict state where there is conflict between storage positions of different entries in the first table. The control circuit moves entries stored in the first table to the second table in response to the detecting of the conflict state. The control circuit detects resolution of the conflict state when the second table is updated. In response to the detecting of the resolution, the control circuit moves the entries stored in the second table to the first table.

Abstract: A valve device includes a body, a solenoid valve, and a manual valve mounted to the body. The manual valve being configured to open and close the gas flow channel via a manual operation. The gas flow channel includes a first flow channel including the valve-side opening portion, and a second flow channel including the tank-side opening portion, and includes an intersection portion in which a first center axis that is a center axis of the first flow channel and a second center axis that is a center axis of the second flow channel intersect with each other. A center axis of the solenoid valve coincides with an extension line of the first center axis and a center axis of the manual valve coincides with an extension line of the second center axis.

Abstract: A portable terminal device has enclosures with a movable portion, a display section that displays visible information showing an operation target area, and a touch sensor that detects a position on a display screen of the display section touched by a user's finger, or the like. A shape detection section detects a change in the shape of the enclosure; an input operation management section manages a position detected by the touch sensor and an operation target area of each of pieces of visible information displayed on the display section in an associated manner; and a display control section automatically makes a change to at least display positions of the respective pieces of visible information about the operation target displayed on the display section in accordance with a change in shape of the enclosure detected by the shape detection section.

Abstract: A valve device includes a body having a gas flow path. When the gas is charged, the first flow path is located upstream of the intersecting portion, and the second flow path is located downstream of the intersecting portion. The gas flow path has a check valve mechanism and a drive mechanism. The check valve mechanism opens a valve when the gas is charged and closes the valve when the gas charge is completed, and the drive mechanism opens the valve of the check valve mechanism and holds the open state of the valve of the check valve mechanism when the gas is discharged from the tank. The check valve mechanism includes a valve seat, and the valve seat is disposed in the first flow path.

Abstract: A relay terminal that is connected to a forming apparatus that forms a three-dimensional object and accepts a forming request provided to the forming apparatus from a client terminal executes a process for displaying, on a display of the client terminal, a reforming UI for accepting a reforming request for a three-dimensional object that has already been formed, accepts a reforming request for the three-dimensional object that has been input on the displayed reforming UI on the display of the client terminal, executes, if a difference is present between the current setting of the forming apparatus and the setting of the forming apparatus upon the previous forming of the three-dimensional object as a target of the accepted reforming request, a process for displaying, on the display of the client terminal, a screen providing information related to the difference, and provides an instruction for reforming the three-dimensional object to the forming apparatus.

Abstract: A portable terminal device has enclosures with a movable portion, a display section that displays visible information showing an operation target area, and a touch sensor that detects a position on a display screen of the display section touched by a user's finger, or the like. A shape detection section detects a change in the shape of the enclosure; an input operation management section manages a position detected by the touch sensor and an operation target area of each of pieces of visible information displayed on the display section in an associated manner; and a display control section automatically makes a change to at least display positions of the respective pieces of visible information about the operation target displayed on the display section in accordance with a change in shape of the enclosure detected by the shape detection section.

Abstract: A portable terminal device has enclosures with a movable portion, a display section that displays visible information showing an operation target area, and a touch sensor that detects a position on a display screen of the display section touched by a user's finger, or the like. A shape detection section detects a change in the shape of the enclosure; an input operation management section manages a position detected by the touch sensor and an operation target area of each of pieces of visible information displayed on the display section in an associated manner; and a display control section automatically makes a change to at least display positions of the respective pieces of visible information about the operation target displayed on the display section in accordance with a change in shape of the enclosure detected by the shape detection section.

Abstract: In the method for manufacturing a glass-fine-particle-deposited body according to the present invention, at least a part of a gas supplying pipe 25 from a temperature controlled booth 24 to a burner 18 for cladding is temperature-controlled so that the temperature at the burner side becomes high and temperature gradient becomes 5° C./m or more. The temperature control is performed so that the temperature gradient becomes preferably 15° C./m or more, more preferably 25° C./m or more. Specifically, the part is controlled to the predetermined temperature gradient by winding a tape heater 26 that is a heating element on the outer circumference of the gas supplying pipe 25 from the temperature controlled booth 24 to the burner 18 for cladding and temperature-controlling the tape heater 26.

Abstract: A portable terminal apparatus includes an enclosure and a display attached to the enclosure and displaying at least part of a communication address and a Web page that is addressable by the communication address. An input that receives inputs from an user and a processor operates the Web page according with the inputs received through the input, wherein the communication address is displayed on an upper portion of the Web page, and the processor shifts the Web page along with the communication address downward when receiving a predetermined input.

Abstract: The invention provides a production method for a glass particulate deposit M which includes a deposition step where a starting rod 111 and a burner 222 for production of glass particles 130 are installed in a reactor 102, a glass source material is introduced into the burner 222, the glass source material is subjected to flame thermal decomposition in the flame formed by the burner 222 to thereby form glass particles 130, and the formed glass particles 130 are deposited on the starting rod 111 to produce a glass particulate deposit M. In the deposition step of the production method, at least two ejecting ports 231 are provided per one burner 222 for ejecting the glass source material from the burner 222, and a flow rate of the glass source material jetting out through one glass source material ejecting port 231 is from 4 m/s to 60 m/s.

Abstract: A method of manufacturing multi-mode optical fiber is disclosed. The method of manufacturing includes: a step of forming a first glass base material while controlling a supply rate of an additive for adjusting a refractive index to achieve a desired refractive index distribution; a step of drawing the first glass base material; a step of measuring a residual stress distribution in a radial direction of the multi-mode optical fiber after being drawn; a step of readjusting the supply rate of the additive in accordance with deviation of a refractive index, acquired from the residual stress distribution measured, from the desired refractive index distribution; a step of forming a second glass base material while supplying the additive at the supply rate after being readjusted; and a step of drawing the second glass base material.

Abstract: A relay terminal that is connected to a forming apparatus that forms a three-dimensional object and accepts a forming request provided to the forming apparatus from a client terminal executes a process for displaying, on a display of the client terminal, a reforming UI for accepting a reforming request for a three-dimensional object that has already been formed, accepts a reforming request for the three-dimensional object that has been input on the displayed reforming UI on the display of the client terminal, executes, if a difference is present between the current setting of the forming apparatus and the setting of the forming apparatus upon the previous forming of the three-dimensional object as a target of the accepted reforming request, a process for displaying, on the display of the client terminal, a screen providing information related to the difference, and provides an instruction for reforming the three-dimensional object to the forming apparatus.

Abstract: In the method for manufacturing a glass-fine-particle-deposited body according to the present invention, at least a part of a gas supplying pipe 25 from a temperature controlled booth 24 to a burner 18 for cladding is temperature-controlled so that the temperature at the burner side becomes high and temperature gradient becomes 5° C./m or more. The temperature control is performed so that the temperature gradient becomes preferably 15° C./m or more, more preferably 25° C./m or more. Specifically, the part is controlled to the predetermined temperature gradient by winding a tape heater 26 that is a heating element on the outer circumference of the gas supplying pipe 25 from the temperature controlled booth 24 to the burner 18 for cladding and temperature-controlling the tape heater 26.

Abstract: A glass particle deposit producing method capable of preventing the variation in the outside diameter of a glass particle deposit and enhancing the yield of a glass raw material is provided. A glass particle deposit is produced by mounting a starting rod 11 and a glass particle generating burner 22 inside a reaction vessel 2, introducing a glass raw material into the burner 22, subjecting the glass raw material to a flame decomposition reaction inside a flame formed by the burner 22 to generate glass particles, and depositing the generated glass particles on the starting rod 11. At this time, the dispersion angle of the glass raw material jetted from the burner 22 with respect to the center axis of the burner 22 is set to the range of 5 to 70 degrees.

Abstract: A production method for a glass particulate deposit which includes a deposition step in which, at least two liquid source material ejecting ports 31a for a glass source material 23 jetting out from a burner 22 are provided per one burner 22, the area of at least one liquid source material port 31a is 2.25×10?4 or less of the area of the flame forming part of the burner 22, the glass source material 23 is, in the form of a liquid thereof, supplied to each liquid material source port 31a, jetting gas ports 31b are arranged in such a manner that the inner periphery of the jetting gas port is positioned outside by 1.0 mm or less from the outer periphery of each liquid source material port 31a, and a gas is jetted out from each gas jetting port 31b.

Abstract: In the method for manufacturing a glass-fine-particle-deposited body according to the present invention, at least a part of a gas supplying pipe 25 from a temperature controlled booth 24 to a burner 18 for cladding is temperature-controlled so that the temperature at the burner side becomes high and temperature gradient becomes 5° C./m or more. The temperature control is performed so that the temperature gradient becomes preferably 15° C./m or more, more preferably 25° C./m or more. Specifically, the part is controlled to the predetermined temperature gradient by winding a tape heater 26 that is a heating element on the outer circumference of the gas supplying pipe 25 from the temperature controlled booth 24 to the burner 18 for cladding and temperature-controlling the tape heater 26.