Abstract: A working machine includes a machine body; a traveling device provided at a lower portion of the machine body; a working device provided at a front portion of the machine body; an operator's seat mounted on the machine body; and a work lamp to illuminate a work area of the working device. The work lamp includes a front work lamp to illuminate front of the machine body. The front work lamp is provided at the front portion of the machine body, at a position lower than a seat surface of the operator's seat.

Abstract: A method performed by a virtual reality (VR) head mounted device (HMD) includes displaying, by a display of the HMD, a VR environment, obtaining, by a processor of the HMD, a video feed of an external environment from an exterior-facing camera of the HMD, and determining, by the processor, to activate one of a plurality of pass-through modes for the video feed based on at least one of a user input or a state of the external environment, wherein the plurality of pass-through modes have different transparencies, different resolutions, or both. The method further includes rendering, by the processor based on the activated pass-through mode, the video feed for overlay onto at least a portion of the VR environment, and displaying, by the display, the rendered video feed overlaid onto the portion of the VR environment.

Abstract: A method includes obtaining real-time video captured using one or more imaging sensors of an immersive headset. The method also includes processing the real-time video to identify one or more real-world objects and render the one or more real-world objects on at least one display of the immersive headset. The method further includes allowing a user of the immersive headset to select at least one of the one or more real-world objects or at least one spatial volume containing the at least one real-world object. The method still further includes displaying an extended reality view on the at least one display while overlaying, on the extended reality view, a representation of at least a portion of the at least one real-world object or the at least one spatial volume in one of multiple modes that each show the representation differently.

Abstract: A computer-implemented method is provided for managing Garbage Collection (GC) safepoints. The method includes determining whether a GC safepoint for a target native method can be removed by checking a heap occupancy ratio prior to executing the target native method. The method further includes removing the GC safepoint responsive to the heap occupancy ratio prior to executing the target native method being less than a threshold occupancy amount percentage. The method also includes determining whether the GC safepoint for the target native method can be removed by checking a most recent GC pause time. The method additionally includes removing the GC safepoint responsive to the most recent GC pause time being shorter by a threshold pause time amount percentage than an execution time of the target native method.

Abstract: A method includes rendering a virtual widget at a first position in an extended reality (XR) space using a head-mounted display. The method also includes detecting a hand gesture of a user at a second position in the XR space using at least one optical sensor. The second position is between the first position and the optical sensor. The method further includes determining a duration of the hand gesture and a distance between the first and second positions. The method also includes performing a first or second type of action based on the duration and/or the distance. The first type of action corresponds to a system-level control of the virtual widget, and the second type of action corresponds to a content-level control of the virtual widget. In addition, the method includes rendering a visual and/or audio feedback based on at least one of the duration or the distance.

Abstract: A method includes rendering a semi-transparent or opaque board on a display of an XR headset, such that the board does not overlap with at least one real-world object. The method also includes receiving a first user input to open a widget library. The method also includes rendering a grid structure on the board after receiving the first user input. The method also includes receiving a second user input to select a widget from the widget library. The method also includes receiving a third user input to move the selected widget to the grid structure on the board. The method also includes placing the selected widget at a position in the grid structure on the board. The method also includes stopping rendering the grid structure, while displaying the selected widget at the position on the board, with an orientation determined based at least partly on a user's head position.

Abstract: The control valve includes a valve body; a spool hole formed in the valve body; a spool slidably fitted in the spool hole; a pilot chamber into which a pilot fluid to actuate the spool is led; a discharge passage to discharge a hydraulic fluid to an outside of the valve body; a spiral groove to communicate with the discharge passage, the spiral groove being formed in a spiral shape on an outer periphery of the spool; and at least one axial groove to cause the pilot chamber and the spiral groove to communicate with each other, the axial groove being formed along an axial direction of the spool on an inner surface of the spool hole.

Abstract: A hydraulic system of a working machine includes a hydraulic actuator to be driven by a hydraulic fluid, a control valve to perform a switching operation for switching a flow rate of the hydraulic fluid supplied to the hydraulic actuator, and a controller to control the control valve. The control valve includes a solenoid and performs the switching operation in accordance with a current supplied to the solenoid. The controller supplies, to the solenoid, a shift current for causing the control valve to perform the switching operation and intermittently supplies a standby current when the shift current is not supplied, the standby current having a current value smaller than the shift current and within a range in which the control valve does not perform the switching operation.

Abstract: A hydraulic system of a working machine includes: a hydraulic actuator; a direction switching valve; the solenoid proportional valve; a controller to control a current to be supplied to the solenoid proportional valve; an operation member for a worker to operate the hydraulic actuator; and a permission operation actuator capable of performing a switching operation between a permission operation for permitting driving of the hydraulic actuator and a non-permission operation for not permitting the driving, in which, when the permission operation actuator is subjected to the non-permission operation and a temperature of the hydraulic fluid is lower than a predetermined temperature, the controller supplies, to the solenoid proportional valve, a first standby current of a first current value defined in a range in which a switching position of the direction switching valve is not switched.

Abstract: In a working machine, a controller controls actuation of control valves for hydraulic actuators in response to operations performed on operation members. The controller is capable of performing second control for controlling the actuation of each of the control valves based on the amount of an operation performed on a corresponding one of the operation members and the correspondence between a preset operation amount for the operation member and the actuation amount of the control valve and first control for controlling, in accordance with the amount of the operation performed on the operation member, the actuation of the control valve such that the flow rate of the hydraulic fluid supplied from the control valve to the corresponding hydraulic actuator increases to be greater than that in the second control. The controller performs the first control when the operation on the operation member is performed to realize a predetermined operation state.

Abstract: In a hydraulic system of a working device, a controller includes a first calculator that calculates a first electric current value for decelerating an angular velocity of a movable member, a second calculator that calculates a second electric current value for decreasing a supply flow rate of a hydraulic fluid to a hydraulic cylinder, and an electric current restrictor that corrects an electric current supplied to an electromagnetic proportional valve by the second electric current value if a determination distance of an operation length from a current operation position of the hydraulic cylinder to a stroke end is longer than a first threshold value and is not more than a second threshold value and corrects the electric current supplied to the electromagnetic proportional valve by either the selected first or second electric current value if the determination distance is not more than the first threshold value.

Abstract: A hydraulic system of a working machine includes a hydraulic actuator to be driven with a hydraulic fluid; a solenoid proportional valve to control the hydraulic actuator in accordance with a current that is supplied; and a controller to control the current that is supplied to the solenoid proportional valve. The controller changes a dither amplitude of the current that is supplied to the solenoid proportional valve in accordance with a temperature of the hydraulic fluid.

Abstract: A neutral return mechanism includes an interlocking shaft to be pushed and pulled in an axial direction in conjunction with a swinging operation of an operation member; a housing member to support the interlocking shaft such that the interlocking shaft is movable in the axial direction and accommodate the interlocking shaft such that one of opposite end portions thereof protrudes; a neutral return spring to return the interlocking shaft from a post-movement position to an initial position, the neutral return spring being accommodated in the housing member such that the neutral return spring extends in the axial direction of the interlocking shaft, wherein the housing member includes a supported portion between a spring accommodation portion in which the neutral return spring is accommodated and a protrusion opening through which the interlocking shaft protrudes, the supported portion being supported at a bracket member.

Abstract: In a working machine, a stroke of an arm cylinder caused when a distance of a tip portion of an arm from a machine body is equal to a predetermined limit distance is defined as a stroke Y1, a stroke of a boom cylinder caused when the stroke of the arm cylinder is equal to the stroke Y1 and a height of the tip portion of the arm is equal to a height of a boom pivot shaft is defined as a stroke X1, and when the stroke of the boom cylinder is between X1 and a stroke end thereof in a direction to swing the boom upward, the controller restricts the stroke of the arm cylinder to swing the arm in a dumping direction to prevent the arm from swinging further in the dumping direction from a position where the stroke of the arm cylinder is equal to Y1.

Abstract: A method, system and computer program product are presented for reducing memory consumption in depth first search (DFS)-based cycle detection processes to detect an n-length cycle on a Pregel model. The method includes generating a graph including a plurality of vertices and edges connecting the plurality of vertices, commencing a cycle from a first vertex of the plurality of vertices, setting an ID of the first vertex to a path and the first vertex as a target vertex, and iterating the following n?1 times: send the path to out-edges starting from the first vertex and transferring the path, via out-edges, n?1 times by subsequent received vertices, find one vertex before returning to the target vertex, add an ID of a found vertex to the path, and set the found vertex as the target vertex such that n=n?1, where is a number of iterations.

Abstract: A working machine includes a controller device to set an allowable-stroke range of the arm cylinder moving the arm toward the boom depending on a turn position of the boom such that a shortest trajectory distance that is a shortest distance between the boom cylinder and a turn trajectory of the tip end portion of the bucket is kept at a predetermined value even when the turn position of the boom changes, in a case where the boom is turned in a direction separating from a boom reference position.

Abstract: A method, system and computer program product for reducing the number of shots required to perform a noisy circuit simulation. A noise model, such as the Pauli noise model or the Kraus noise model, is applied to each shot of the quantum circuit, where the noise model randomly selects a gate operation to be performed in simulating the quantum circuit. A subset of shots are identified (e.g., shot numbers 1 and 3), where each of the selected subset of shots has the same gate operation(s) selected by the noise model to be performed in simulating the quantum circuit. A single simulation of the quantum circuit will then be performed for such a subset of shots using the selected gate operation (e.g., Pauli Z gate) for such a group of shots. In this manner, the number of shots required to perform a noisy circuit simulation is reduced.

Abstract: A working machine includes a machine body, a support bracket protruding forward from the machine body, a swing bracket pivotally supported by the support bracket to be capable of horizontally pivoting, a boom pivotally supported by the swing bracket to be capable of pivoting up and down, a swing sensor configured to detect a position of the swing bracket, and a controller configured to acquire a detection signal from the swing sensor and to control a swinging movement defined as a pivotal movement of the swing bracket. The controller includes a swinging stopper unit to stop the swinging movement when the swing bracket in the pivotal movement reaches a center position at which the boom is orientated in a forward direction of the machine body.

Abstract: A working machine includes a traveling device having a traveling frame, a turn base plate supported on the traveling frame and configured to turn around an axis extending in a vertical direction, the turn base plate having an opening portion through which the axis extends, and a swivel joint including an outer sleeve fixed to the turn base plate, and an inner shaft inserted to the opening portion and inserted to the outer sleeve so as to rotate about the axis, the inner shaft being configured to restrictively rotate with respect to the traveling frame. The outer sleeve has a flange portion fixed to the turn base plate on a periphery of the opening portion and covering the opening portion.

Abstract: Systems and techniques that facilitate expectation value calculation by grouping Pauli-strings are provided. In various embodiments, a system can comprise an expectation component that calculate expectation values of two Pauli-strings based on a first bit series of a first Pauli-string of the two Pauli-strings and a second bit series of a second Pauli-string of the two Pauli-strings, wherein bit series comprise a first value for a position of an x or y in a Pauli string and a second value for a position of a non-x or y in the Pauli-string.