Abstract: An amplifier circuitry includes a first amplifier, a second amplifier, a voltage generating circuitry, and a control circuitry. The first amplifier circuitry configured to amplify a first signal. The second amplifier circuitry configured to amplify a second signal which forms differential signals together with the first signal. The voltage generating circuitry configured to generate at least one of a first bias voltage to be applied to the first signal and a second bias voltage to be applied to the second signal. The control circuitry configured to control the voltage generation circuitry so as to decrease a difference between a DC component of an output of the first amplifier circuitry and a DC component of an output of the second amplifier circuitry.

Abstract: An object is to provide an information processing apparatus and a communication system that are capable of observing communication settings. According to an embodiment, an information processing apparatus is connected between a terminal device and a server apparatus that communicates with the terminal device via a network. The information processing apparatus includes a first communication unit, a second communication unit, and a control unit. The first communication unit is connected to a server apparatus via the network. The second communication unit is connected to the terminal device. The control unit is linked up to a communication management apparatus by the first communication unit, and is linked up to a terminal device by the second communication unit, after communication settings based on communication setting information, which indicates whether or not the terminal device can communicate with another terminal device, are completed.

Abstract: An information transmitter/receiver system includes a transmitter and a receiver. The receiver includes a first communication unit, an interface, a storage unit and a first processor. The transmitter includes a second communication unit and a second processor. The interface is connected to a biometric authentication device. The storage unit which stores a first key of a recipient who has succeeded in the biometric authentication performed by the biometric authentication device and a second key of the recipient corresponding to the first key. The first processor causes the transmitter to store electronic data locked with the second key of the recipient and unlocks the electronic data locked with the second key of the recipient using the first key of the recipient. The second processor transmits to the receiver the electronic data locked with the second key of the recipient.

Abstract: An optical device comprises a light source, an intensity control element (adjustable between an on-state and an off-state), an optical channel, and an optical component. The light source supplies an optical pulse to the intensity control element, which modulates an intensity of the received pulse and to provides the modulated pulse to the channel. The intensity of the modulated pulse is higher when the intensity control element is in the on-state than in the off-state. The optical component receives the modulated pulse from the channel. The optical intensity modulator is configured such that at least a portion of the pulse is modulated in the on-state, the leading edge of said portion exits the intensity modulator at a first time, and the intensity modulator is in the off-state at a second time which is twice the propagation time measured from to the first time.

Abstract: An information processing device includes one or more hardware processors configured to function as a reception unit, an extraction unit, a calculation unit, and a determination unit. The reception unit receives inputs of an image including image regions having a specific relation and region information indicating a first image region in the image. The extraction unit extracts one or more second image regions from the image. The calculation unit calculates a relational-feature indicating a relation between the first image region indicated by the region information and another image region in the image by using the image, and calculates a self-feature indicating a feature of a region for each second image region. The determination unit determines the second image region having the specific relation with the first image region based on a similarity between the relational feature and the self-feature.

Abstract: An optical module according to the present embodiment includes a photoelectric element and a gain adjusting unit. The photoelectric element performs at least one of conversion from an electrical signal to an optical signal or conversion from an optical signal to an electrical signal. The gain adjusting unit adjusts a gain of a signal level of at least one of an electrical signal or an optical signal that are output from the photoelectric element in a test of the optical module.

Abstract: According to an embodiment, a machine learning device is con configured to: acquire observation information including information on a speed of a control target point at a control target time; output control information including information on speed control of the control target point, the control information being determined in accordance with the observation information and a control policy; determine a corrected reward obtained by correcting a reward in accordance with a speed of the control target point included in the observation information, the reward being higher as an error between a value of an evaluation parameter and a goal is smaller, the evaluation parameter being a parameter other than a speed derived from the observation information; and perform reinforcement learning of the control policy based on the observation information and the corrected reward.

Abstract: According to one embodiment, a reading system includes a processing device. The processing device includes an extractor, a line thinner, a setter, and an identifier. The extractor extracts a partial image from an input image. A character of a segment display is imaged in the partial image. The segment display includes a plurality of segments. The line thinner thins a cluster of pixels representing a character in the partial image. The setter sets, in the partial image, a plurality of determination regions corresponding respectively to the plurality of segments. The identifier detects a number of pixels included in the thinned cluster for each of the plurality of determination regions, and identifies the character based on a detection result.

Abstract: An estimation apparatus includes one or more hardware processors configured to detect a first object included in time-series images, and generate a tracking trajectory of the first object; detect a state change event indicating an appearance, a disappearance, a bend, or a stay of the tracking trajectory, and extract a coordinate of the first object in which the state change event has occurred; and estimate a determination region based on the coordinate. Accordingly, the estimation apparatus is able to estimate more accurately an image region to be analyzed.

Abstract: According to one embodiment, a magnetic sensor includes first to sixth shields, first and second magnetic layers, a first member, and first to fourth terminals. The first magnetic layer is provided between the first shield and the second shield. The first magnetic layer is between the third shield and the fourth shield in the second direction. The second magnetic layer is provided between the first magnetic layer and the second shield. The second magnetic layer is between the fifth shield and the sixth shield in the second direction. The second magnetic layer is electrically connected to the fifth shield and the sixth shield. The first member includes a first region and a second region. The first region is provided between the third shield and the first magnetic layer. The second region is provided between the first magnetic layer and the fourth shield.

Abstract: According to one embodiment, a stator includes a stator core and a stator coil. The stator core includes an annular yoke, and a plurality of teeth each extending from an inner periphery of the yoke in a radial direction and arranged in a circumferential direction of the yoke at intervals, in which a gap between a pair of teeth adjacent to each other in the circumferential direction forms a slot extending in the radial direction. With respect to the pair of teeth and the slot, only one of the teeth includes a convex holder-shaped part which projects in the slot toward the other tooth and extends in an axial direction. The stator coil includes a plurality of linear conductors aligned in the radial direction in the slot and held in the slot by the holder-shaped part.

Abstract: According to one embodiment, a light detector includes a plurality of elements, a plurality of separation parts, a fourth semiconductor region, a fifth semiconductor region, a first interconnect, a first quenching part, and a second interconnect. The elements are located in a cell region and arranged. Each of the elements includes first, second, and third semiconductor regions. The second semiconductor region is located on the first semiconductor region. The third semiconductor region is located on the second semiconductor region. The separation parts are located respectively around the elements. The fourth semiconductor region is located around each of the separation parts. The fifth semiconductor region is located on the fourth semiconductor region. The first interconnect is electrically connected to the third semiconductor regions. The first quenching part is electrically connected to the first interconnect. The second interconnect is electrically connected to the fifth semiconductor region.

Abstract: A method may produce a heat regenerating material particle, including: preparing a slurry by adding a powder of the heat regenerating substance to an alginic acid aqueous solution and mixing the powder of the heat regenerating substance and the aqueous alginic acid solution; and forming a particle by gelling the slurry by dropping the slurry into a gelling solution. The gelling solution may include a metal element including calcium (Ca), manganese (Mn), magnesium (Mg) beryllium (Be), strontium (Sr), aluminum (Al), iron (Fe), copper (Cu), nickel (Ni), and cobalt (Co). The forming may involve controlling the gelation time so that a concentration of the metal element in a first region of the particle becomes lower than a concentration of the metal element in a second region. The second region may be closer to an outer edge of the particle compared to the first region.

Abstract: According to one embodiment, a work estimation apparatus includes processing circuitry. The processing circuitry acquires video data on a predetermined area, calculates a work value related to work performed by a worker included in the video data, based on the video data, and displays the work value.

Abstract: According to one embodiment, a nitride semiconductor includes a base body, a nitride member, and an intermediate region provided between the base body and the nitride member. The nitride member includes a first nitride region including Alx1Ga1-x1N (0<x1?1), and a second nitride region including Alx2Ga1-x2N (0?x2<1, x2<x1). The first nitride region is between the intermediate region and the second nitride region. The intermediate region includes nitrogen and carbon. A concentration of carbon in the intermediate region is not less than 1.5×1019/cm3 and not more than 6×1020/cm3.

Abstract: A method may produce a two-stage heat regenerating cryogenic refrigerator including a vacuum vessel, first and second cylinder disposed in the vessel, the second cylinder coaxially connected to the first cylinder, and first and second regenerator respectively disposed in the first and second cylinder. The method may include: accommodating a first heat regenerating material (HRM) in the first regenerator; and filling a plurality of HRM particles in the second regenerator. The HRM particles may be a second HRM, each of the HRM particles including an oxide or oxysulfide heat regenerating substance having a maximum value of specific heat at a temperature of ?20 K of 0.3+ J/cm3·K and Ca, Mn, Mg, Be, Sr, Al, Fe, Cu, Ni, and/or Co. Each of the HRM particles may include a first and second region, the second region being closer to an HRM particle outer edge than the first region.

Abstract: A system capable of communicating with a terminal includes a processor and a transmitter. The processor is configured to generate a first control signal including a first target position to operate at least part of the terminal and generate a second control signal including a second target position to operate at least part of the terminal after an operation of the at least part of the terminal in accordance with the first target position. The transmitter is configured to transmit the first control signal to the terminal at a first timing and transmit the second control signal to the terminal at a second timing after the first timing. The first target position is farther than a position which the at least part of the terminal is to reach at the second timing.

Abstract: According to one embodiment, a first P-type transistor with a gate is coupled to a first node, and a drain is coupled to a second node. A first N-type transistor with a gate is coupled to the first node, and a drain is coupled to the second node. A second P-type transistor with a gate is coupled to the second node, and a drain is coupled to a third node. A second N-type transistor with a gate is coupled to the second node, and a drain is coupled to the third node. The first P-type transistor is smaller than the first N-type transistor. The second N-type transistor is smaller than the second P-type transistor. The second N-type transistor is smaller than the first N-type transistor.

Abstract: An isolator includes a substrate; a first planar coil provided above the substrate and along a surface of the substrate; a first insulating portion on the first planar coil; a second planar coil on the first insulating portion; and a metal layer above the first insulating portion. The first planar coil, the second planar coil, and the metal layer are arranged in a first direction perpendicular to the surface of the substrate. The first planar coil and the second planar coil each having a center and an outer perimeter in a second direction along the surface of the substrate. A distance in the second direction from the center of the first planar coil to the outer perimeter of the first planar coil is less than a distance in the second direction from the center of the second planar coil to the outer perimeter of the second planar coil.

Abstract: According to one embodiment, a transmission line includes a first structure, a second structure, and a first intermediate conductive layer. The first structure includes a first conductive layer, a first opposing conductive layer, and a first conductive line. The first conductive line extends along a first direction. The first direction crosses a second direction from the first conductive layer to the first opposing conductive layer. The second structure includes a second conductive layer, a second opposing conductive layer, and a second conductive line. The second conductive line extends along the first direction. The first intermediate conductive layer includes a first line extending along the first direction and a second line extending along the first direction. A third direction from the first line to the second line crosses a plane including the first direction and the second direction.