Abstract: A method for producing a plastic element provided with fine surface roughness is provided. In the method, etching of a surface of the plastic element is performed separately in a first step and in a second step, in the first step, fine roughness having a predetermined average value of pitch in the range from 0.05 to 1 micrometer is generated on the surface through reactive ion etching in an atmosphere of a first gas; and in the second step, an average value of depth of the fine roughness generated in the first step is adjusted to a predetermined value in the range from 0.15 to 1.5 micrometers while the predetermined average value of pitch is substantially maintained through reactive ion etching in an atmosphere of a second gas, reactivity to the plastic element of the second gas being lower than reactivity to the plastic element of the first gas.

Abstract: A power amplifier according to the present disclosure includes an input terminal that receives a high-frequency signal from an outside, an MMIC that receives the high-frequency signal via the input terminal and amplifies the high-frequency signal, an input matching circuit, a transistor that receives, via the input matching circuit, the high-frequency signal amplified by the MMIC and amplifies the high-frequency signal, an output matching circuit, an output terminal that receives a drain voltage of the transistor from the outside, receives, via the output matching circuit, the high-frequency signal amplified by the transistor, and outputs the high-frequency signal to the outside and a drain bias circuit board that connects a drain of the transistor and a drain of the MMIC, wherein the transistor and the MMIC are conjugately matched at impedance smaller than 50 ?.

Abstract: Pilot posture information indicating a posture of a pilot is input, and action control is executed on a bipedal robot capable of switching modes between a walk mode and a stand mode based on the pilot posture information. The above action control includes stand transition control, the stand transition control including calculating reference posture information indicating a reference posture of the bipedal robot based on initial posture information indicating an initial posture of the bipedal robot corresponding to an initial posture of the pilot and foot position information indicating current foot positions of the bipedal robot, and controlling a posture of the bipedal robot based on the pilot posture information and the calculated reference posture information when the modes are switched from the walk mode to the stand mode.

Abstract: An information processing apparatus including: an obtaining unit that obtains, for each of a plurality of computers in which software that supports a multi-session model and is accessed and used by a plurality of users is installed, use history information indicating use histories of the users that use the computers; a generation unit that generates, for each computer, reference use history information indicating a use history serving as a reference for the computer, using the use history information of the users that use the computer; and an extraction unit that calculates, for each user that uses the computers, similarities between the use history information of the user and the pieces of reference use history information of the computers, and extracting a computer corresponding to the user based on the similarities.

Abstract: An information processing apparatus including: a detection unit that detects, when a computer needs to be restarted in applying a security patch to software that supports a multi-session model and is accessed and used by a plurality of users, one or more non-use periods that are equal to or longer than a time required for the restart and in which none of the users are using the computer, using information regarding the time required for the restart and use history information indicating use histories of the respective users of the computer; and a restart instruction unit that sets a restartable period to a period later than a current point of time based on the detected one or more non-use periods, and gives an instruction for restarting the computer in the restartable period.

Abstract: A periphery monitoring apparatus includes: a display processing unit configured to display, on a display, a peripheral image representing a virtual gaze area including a virtual gaze point viewed from a virtual viewpoint in a virtual space in which a situation in a periphery of a vehicle is reflected, based on a captured image acquired by capturing an image of the periphery of the vehicle; and a change processing unit configured to change a viewpoint radius corresponding to a distance between the virtual gaze point and the virtual viewpoint and a viewing angle corresponding to a range of the virtual gaze area viewed from the virtual viewpoint in accordance with a change in a situation on a left side or a right side in a traveling direction of the vehicle.

Abstract: A method for detecting a phase on a gear includes obtaining a first determination result indicating whether the gear has been detected at a first detection position. A second determination result indicating whether the gear has been detected at a second detection position is obtained. A third angle between the first and second angles is obtained. A third determination result indicating whether the gear has been detected at a third detection position is obtained. The first angle is replaced with the third angle when the third and first determination results are same, or the second angle is replaced with the third angle when the third and first determination results are different. The phase on the gear is detected based on an angle that is between the first angle and the second angle.

Abstract: A sheet feeding device includes a sheet stacker, first and second feeders, a separation member, first and second sensors, and circuitry. The sheet stacker stacks multiple sheets including a sheet. The first and second feeder feed the sheet stacked on the sheet stacker in a sheet conveyance direction. The separation member contacts the second feeder to form a nip region. The first and second sensors detect the first or second sheet. The circuitry is to determine that a trailing end of the first sheet reaches at a given position downstream from the first sensor, and start feeding the second sheet in response to detecting the trading end of the first sheet by the second sensor, detecting the trailing end of the first sheet by the first sensor, or determining that the trailing end of the first sheet reaches at the given position.

Abstract: A power amplifier includes a main transistor configured to amplify an input signal and having characteristics of a drain current delay, a replica transistor having the same characteristics of the drain current delay as the characteristics of the main transistor, a temperature of the replica transistor changing in accordance with a temperature of the main transistor, and an envelope signal of the input signal being input to the replica transistor, an extraction circuit configured to extract a delay component due to the drain current delay from an output voltage of the replica transistor and an adder configured to add the delay component to a gate bias voltage to be applied to the main transistor so as to cancel out the drain current delay of the main transistor.

Abstract: A method of producing a diffraction grating of borosilicate glass or barium borosilicate glass, the method comprising the steps of forming a grating on a surface of a silicon wafer the grating through the Bosch process; forming an oxide film on a surface of the grating by heating and exposure to water vapor of the silicon wafer; removing the oxide film using hydrofluoric acid; making the surface provided with the grating of the silicon wafer and a surface of a glass plate undergo anodic bonding; heating the silicon wafer and the glass plate bonded to each other; polishing a surface opposite to the boded surface of the silicon wafer and a surface opposite to the boded surface of the glass plate; and removing silicon from the glass plate by selective etching using xenon difluoride.

Abstract: A motion data generating system for a robot including a waist and a leg, comprising: a test subject motion data acquiring unit that acquires captured waist motion data from motion of a leg separated from motion of a test subject; a representative point extracting unit that performs peak detection by smoothing the captured leg motion data; a scale converting unit that converts the capture leg motion data and the capture waist motion data at a representative point into a scale of the robot; a ZMP setting unit that sets a target zero moment point (ZMP of the robot; an interpolation generating unit that generates an attitude of the leg and the waist of the robot by interpolation; and a motion data generating unit that generates motion data in which the attitude of the leg and the waist is corrected so as to satisfy a target ZMP.

Abstract: A sheet conveying device includes a pair of rollers, a biasing member, a guide member, a biasing support, and a biasing force changer. The pair of rollers includes a first roller and a second roller disposed in contact with the first roller. The pair of rollers is configured to hold a sheet between the first roller and the second roller. The biasing member is configured to bias the first roller toward the second roller. The biasing support is configured to support the biasing member and has a guide target member configured to slide along the guide member to move the biasing support. The biasing force changer is configured to change a biasing force of the biasing member along with movement of the biasing support. The guide target member has a portion projecting into a sheet conveyance passage through which the sheet is conveyed by the pair of rollers.

Abstract: A sheet conveying device includes a pair of rollers including a first roller and a second roller to hold a sheet conveyed between the first and second rollers; a biasing member to bias the first roller toward the second roller; a biasing force changer to change a biasing force of the biasing member; control circuitry to, when a predetermined changing condition is met, cause the changer to change the biasing force and cause the rollers to convey the sheet; an operation detector to detect a changing operation of the changer; and a notification device to notify an abnormality of the changing operation when the operation detector detects the abnormality. When the operation detector detects the abnormality, the control circuitry performs sheet conveyance control to cause the rollers to convey the sheet without causing the changer to change the biasing force, regardless of whether the predetermined changing condition is met.

Abstract: Provided are an input matching circuit, at least one amplifying transistor that receives a signal from the input matching circuit, a first dummy transistor that receives a signal from the input matching circuit, a second dummy transistor that receives a signal from the input matching circuit, and an output matching circuit that outputs an output of the amplifying transistor, the amplifying transistor being arranged between the first dummy transistor and the second dummy transistor, the amplifying transistor, the first dummy transistor, and the second dummy transistor being provided in a row along the input matching circuit.

Abstract: A method for manufacturing fine surface roughness having an average pitch of 50 nanometers to 5 micrometers on a quartz glass substrate without preparing a mask prior to an etching process, the method comprising the steps of: making the quartz glass substrate undergo ion etching with argon gas in an ion etching apparatus, in which the quartz glass substrate is placed on a first electrode, the first electrode is connected to a high frequency power source and a second electrode is grounded; and making the quartz glass substrate undergo reactive ion etching with trifluoromethane (CHF3) gas or a mixed gas of trifluoromethane (CHF3) and oxygen in the ion etching apparatus in which the quartz glass substrate is placed on the first electrode, the first electrode is connected to the high frequency power source and the second electrode is grounded.

Abstract: A motion data generation system of a robot including an upper body, a waist, and a lower body is provided. The motion data generation system includes a subject motion data acquisition unit that acquires upper body motion data captured from motion of the upper body of a subject and captured waist motion data captured from motion of the waist of the subject, a manually generated motion data acquisition unit that acquires lower body motion data and manually generated waist motion data, the lower body motion data and the manually generated waist motion data being generated through manual input by a user, and a robot motion control unit. The robot motion control unit includes a leg state determination unit and a waist motion data generation unit.

Abstract: A tracking system and an image obtaining means include: a processor; a memory module communicatively coupled to the processor; a pan-tilt camera including angle sensors communicatively coupled to the processor for tracking a predetermined object and sensing the coordinates of the pan-tilt camera; and machine readable instructions stored in the memory module that cause the image obtaining means to determine whether the predetermined object becomes lost within the image periphery of the image data; and if the predetermined object becomes lost, record the coordinates of the camera in the memory module where the predetermined has been tracked for the last time.

Abstract: An image obtaining means including: a processor; a memory module communicatively coupled to the processor; a camera communicatively coupled to the processor; and the processor being configured to: receive, from the camera, image data; determine whether a predetermined object is present based on the image data; if a predetermined object is detected as present, determine if the predetermined object is moving or stationary; and if the predetermined object is stationary for at least a predetermined time period, record the duration that the predetermined object is stationary in the memory module.

Abstract: A diffusion element is configured by combining: a structure for diffusion constituted by combining periodic surface structures having multiple periods to achieve a light intensity distribution in which the light intensity is uniform at angles less than or equal to a predetermined diffusion angle ? and the light intensity is as close as possible to zero intensity at angles greater than the diffusion angle ?; and a diffractive structure having a period of 1 or more and 2 or less times of ?max, where ?max is the maximum period of the structure for diffusion.

Abstract: A load controller includes a control device, a switching device, an arc suppression circuit, and a control section. The control device is provided on an electric power supply path between first and second terminals coupled to an alternating-current electric power source, and controls electric power supply to a load provided on the electric power supply path. The switching device is provided on the electric power supply path and is to be in an open state or a closed state. The arc suppression circuit is to suppress discharge at the switching device. The arc suppression circuit is to be set to an enabled state or a limited state. The control section controls operation of the control device, the switching device, and the arc suppression circuit. The control section varies the arc suppression circuit from the limited state to the enabled state after bringing the switching device into the closed state.