Abstract: The present disclosure provides a head-mounted virtual reality device. The head-mounted virtual reality device includes an eye movement recognition assembly and a processor, where the eye movement recognition assembly includes a light source assembly, a first camera, and a second camera. The head-mounted virtual reality device obtains a first eye image and a second eye image including strip-shaped light rays emitted by the light source assembly through the cooperation of the light source assembly, the first camera, and the second camera, the processor determines an eye depth map with depth information based on the first eye image and the second eye image, and then determines coordinates of a center of an iris of the user based on the eye depth map.

Abstract: An explosive cartridge delivery tube is provided and includes an explosive delivery tube body, wherein the explosive delivery tube body has a length greater than a depth of a blast hole, an explosive delivery chamber is formed inside the explosive delivery tube body, the explosive delivery chamber is arranged in a length direction of the explosive delivery tube body in a running-through manner, and an internal diameter of the explosive delivery chamber is greater than a diameter of an explosive cartridge.

Abstract: According to an embodiment, a plasma processing system is proposed. The plasma processing system includes a plasma chamber; an RF source configured to generate a forward RF wave; an impedance matching circuit coupled to the RF source, the impedance matching circuit configured to provide matching for the RF source; a balun having unbalanced terminals coupled to the impedance matching circuit; and a resonant antenna configured to generate plasma within the plasma chamber, the resonant antenna being a spiral resonant antenna with an electrical length corresponding to a half-wavelength of a frequency of the forward RF wave, the resonant antenna comprising: a first tap along the spiral resonant antenna coupled to a first balanced terminal of the balun and a second tap along the spiral resonant antenna coupled to a second balanced terminal of the balun.

Abstract: A wavelength-division multiplexing device or a communications device may include a fastener, optical fibers, a filter, and a lens. The fastener is provided with an optical fiber positioning hole and a filter mounting groove, the filter mounting groove is disposed on a side of a tail end that is of the optical fiber positioning hole and that is away from an opening of the optical fiber positioning hole, and the filter mounting groove and the tail end of the optical fiber positioning hole are spaced apart. The optical fiber may be installed in the optical fiber positioning hole, the filter may be installed in the filter mounting groove, and the filter may transmissively transmit or reflect light rays emitted from the optical fiber.

Abstract: Techniques disclosed herein include receiving a request to perform an upgrade. The upgrade can comprise changes to firmware or software of the network interface card. Input/Output (I/O) traffic can be monitored on one or more paths between the network interface card and a storage device. The paths can have a path capacity comprising a bandwidth of Input/Output traffic. The spare Input/Output traffic capacity can be calculated based at least in part on the Input/Output traffic and the path capacity. Whether to remove a path can be determined based at least in part on the spare Input/Output traffic capacity. The upgrade can be performed with the path halted in accordance with a determination to remove the path. The upgrade can be performed with the path included in accordance with a determination to not remove the path.

Abstract: An electronic device is provided that includes a camera assembly. The camera assembly can include a lens that forms an image perimeter that defines an image circle, and a camera sensor aligned with the image circle and configured to obtain image data. The camera sensor may encompass the image circle to cover the image circle entirely with the camera sensor. The electronic device can also include a memory to store executable instructions, and one or more processors, when implementing the executable instructions, configured to generate a captured image from the image data obtained from the camera sensor.

Abstract: Disclosed are a camera assembly, a display device and an assembling method therefor. The camera assembly (10) includes a circuit board (11), at least one first camera (12) and at least one second camera (13), which are disposed on the circuit board (11). The first camera (12) is configured to form a face image under control of a drive signal. The second camera (13) is configured to form an eyeball image under control of a drive signal. The circuit board (11) is electrically connected to the first camera (12) and the second camera (13), respectively, and configured to generate the drive signal and acquire the face image and the eyeball image.

Abstract: This disclosure describes techniques for Optical Add Drop Multiplexers (OADMs) that apply asymmetrical filtering to allow for individual channels within a channel group to be independently added/dropped or passed through. In one example, an optical add-drop multiplexer includes a first input port configured to receive an input signal having a first wavelength channel, a second wavelength channel, and a third wavelength channel; a demultiplexer having a first filter configured to: pass the first wavelength channel and the second wavelength channel, and filter the third wavelength channel; a multiplexer having a second filter configured to: pass the second wavelength channel and the third wavelength channel, and filter the first wavelength channel; and a first output port configured to output an output signal comprising the second wavelength channel of the input signal.

Abstract: The present disclosure provides a power supply and electric vehicle, including a battery, an input component, an output component, and an inverter. The input component includes an alternating current input interface and a direct current input interface; the output component includes an alternating current output interface and a direct current output interface; and the inverter is configured to perform conversion between alternating current and direct current. According to the power supply and electric vehicle, the vehicle has various electric energy inputting forms and has various output ports for alternating current/direct current, so that it is convenient for a user to cope with outdoor emergencies, and the power supply and electric vehicle can be used as an emergency power supply.

Abstract: Embodiments are disclosed of a data center including a plurality of computers. A communication interface is communicatively coupled to the plurality of computers and adapted to communicate, wirelessly or by wire, between the plurality of computers, a user device, and at least one autonomous driving vehicle (ADV) computer. Instructions are stored in the plurality of computers that cause one or more of the plurality of computers to receive a user computing request from the user device. The computers determine whether there is an available ADV computer to execute the user computing request. If there is an available ADV computer to execute the user computing request, the computers reconfigure the available ADV computer from autonomous driving mode to computing mode, and transmit the user computing request for execution by the ADV computer. If no ADV computer is available to execute the computing request, then the request is executed by one or more of the plurality of computers.

Abstract: A processor-implemented method includes obtaining a visual association feature indicating an association between a first image frame and a second image frame and a visual appearance feature indicating the same object appearance in the first image frame and the second image frame, constructing a visual reprojection constraint based on the visual association feature, constructing a visual feature metric constraint based on the visual appearance feature, and performing localization and mapping based on the visual reprojection constraint and the visual feature metric constraint.

Abstract: An electronic display board system, an electronic display board and a support platform are provided. The electronic display board includes a display panel, a housing and a first magnetic attraction structure. The display panel includes a display surface on a display side; the housing is connected to the display panel, and includes a first connecting surface on a side away from the display panel, and the first connecting surface and the display surface have a first angle; and the first magnetic attraction structure is fixed on the housing and located between the first connecting surface and the display panel, the first magnetic attraction structure includes a first magnetic attraction portion and a second magnetic attraction portion configured to attract each other upon approaching each other.

Abstract: The present disclosure provides a display apparatus, including a frame including a body, a plurality of side walls and limiting posts integrally formed, side walls are connected end to end to form an accommodation space with the body, and each limiting post is located on one side of the accommodation space and adjoins at least one of side walls; a backlight in accommodation space and fixed to the body, an orthographic projection of the backlight on the body is not overlapped with orthographic projections of limiting posts on the body; an optical assembly on a side of backlight away from the body, optical assembly is located in accommodation space and fixed to limiting posts; and a three-dimensional display assembly on a side of optical assembly away from the body, three-dimensional display assembly covers accommodation space and is fixed to side walls.

Abstract: Provided is an electroluminescent device. The organic electroluminescent device comprises an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer comprises a first compound having a structure of H-L1-E and a second compound having a general formula of M(La)m(Lb)n(Lc)q, and the device has at least one maximum emission wavelength greater than 630 nm. Such a new material composition consisting of the first compound and the second compound can be used in a light-emitting layer of the electroluminescent device. The new material composition can achieve the emission of deep red light in the device, significantly reduce a drive voltage of the device while significantly improving device efficiency and/or a device lifetime, and provide better device performance. Further provided is a display assembly.

Abstract: Disclosed are systems, apparatuses, methods, and computer-readable media for generating a report in response to detected conditions in a network environment. A method includes: generating one or more triggering policies; determining if the one or more of the triggering policies has been satisfied; starting a netflow process in response to the determination that the one or more of the trigger policies has been satisfied; collecting in real time data for connected devices that satisfy the one or more triggering policies; generating and saving a record associated with the collected data; generating a report based on analysis of the record; displaying a link to the report.

Abstract: The invention relates to an organic molecule, in particular for the application in optoelectronic devices. According to the invention, the organic molecule has a structure of formula I.

Abstract: A recombinant adeno-associated virus (rAAV) vector comprising an AAVhu68 capsid produced in a production system comprising a nucleotide sequence of SEQ ID NO: 1, or a sequence at least 75% identical thereto which encodes SEQ ID NO:2. The AAVhu68 capsid comprises subpopulations of highly deamidated asparagine residues in asparagine-glycine pairs in the amino acid sequence of SEQ ID NO: 2. Also provided are compositions containing the rAAV and uses thereof. Additionally, rAAV having an engineered AAV capsid comprising at least one subpopulation of vp1 or vp2 proteins having a Val at amino acid position 157 with reference to the AAVhu68 vp1 numbering are provided.

Abstract: System and methods are disclosed for interactive advertisement brand targeting related to recently viewed objects within content assets. Advertisements, and/or other supplemental content, related to recently viewed content tend to be the most impressionable and relevant for the viewer of the content. By recognizing objects within the recently viewed content and mapping these objects to advertisements related to such objects, advertisement campaigns can increase the reach rate and make a better ad experience. Thus, when a user watching a video pauses the video, for example, an advertisement may be displayed related to an object in the frame of the paused video.

Abstract: A phase shifting system for antennas includes: a plurality of transmission assemblies, each of which has a gear set and a rack that can be driven by the gear set, the gear set having a clutch gear that can switch between a coupled position and a decoupled position, wherein in the coupled position of the clutch gear, the gear set can drive the rack to move, and in the decoupled position of the clutch gear, the rack cannot be driven by the gear set; a plurality of phase shifting transmission elements, each of which is correspondingly disposed to the clutch gear of the plurality of transmission assemblies and can be movably coupled with the clutch gear; and a phase shifting drive mechanism configured to selectively drive any one of the plurality of phase shifting transmission elements, wherein, the driven phase shifting transmission element can drive the clutch gear of the corresponding transmission assembly from the decoupled position to the coupled position.

Abstract: This invention discloses an optimization method for flowback nozzles in deep coal and rock gas formations, considering the influence of multiple factors, belonging to the field of coal and rock gas extraction technology. Addressing the challenge of flowback fluid velocity control in deep coal and rock gas development, this method establishes models for matrix and fracture seepage and two-phase flow within the wellbore. It comprehensively considers the migration of pulverized coal and proppant, as well as the influence of coal seam cleavage fractures, to optimize wellhead nozzle size, reduce the probability of pulverized coal clogging fractures, and improve fracture conductivity. Compared to traditional methods, this invention has significant advantages in improving fracturing efficiency and high-efficiency coal and rock gas extraction, providing an innovative solution for the scientific research and engineering applications of deep coal and rock gas.