Abstract: An automatic seismic facies identification method based on combination of Self-Attention mechanism and U-shape network architecture, including: obtaining and preprocessing post-stack seismic data to construct a sample training and validation dataset; building an encoder through an overlapped patch merging module with down-sampling function and a self-attention transformer module with global modeling function; building a decoder through a patch expanding module with linear upsampling function, the self-attention transformer module, and a skip connection module with multilayer feature fusion function; building a seismic facies identification model using the encoder, the decoder, and a Hypercolumn module, where the seismic facies identification model includes a Hypercolumns-U-Segformer (HUSeg); and building a hybrid loss function; iteratively training the seismic facies identification model with a training and validation set; and inputting test data into a trained identification model to obtain seismic facies co

Abstract: Disclosed are a DC terminal multi-stage filter structure, a motor controller and a vehicle. The DC terminal multi-stage filter structure is fixed on a controller enclosure. A head end of a DC terminal is provided with a high voltage bus and a tail end of the DC terminal is provided with a film capacitor. The DC terminal multi-stage filter structure includes a primary filter holder assembly and a secondary filter holder assembly. The primary filter holder assembly and the secondary filter holder assembly are provided inside the controller enclosure in a line along a length direction of the controller enclosure.

Abstract: A method for microengineering a gradient structure on a metal surface. A metal surface including at least first, second, and third metal surface regions is exposed to a metal-removing agent. A portion of surface metal atoms is removed by the metal-removing agent in each of the first, second, and third metal surface regions. Sequential metal removal processes expose only the second and third regions to the metal-removing agent, followed by exposing only the third region to the metal-removing agent. A gradient metal surface is formed having different properties in each of the first, second, and third metal surface regions. In a further aspect, quantitative surface-enhanced Raman spectroscopy may be performed using the treated metal surface. An amount of an analyte is determined based on its position in one of the first, second, or third metal surface regions.

Abstract: A preparation method of a low-cost passivated contact full-back electrode solar cell includes: performing alkali polishing on a Si wafer; performing RCA cleaning and HF cleaning; growing a tunnel SiOx film layer, an in-situ doped amorphous Si film layer, and a texturing mask layer on the back of the Si wafer; performing annealing activation on the amorphous Si film layer to form a polycrystalline Si film layer; etching the texturing mask layer; performing double-sided texturing on the Si wafer; performing HF cleaning to remove the texturing mask layer; depositing an AlOx film on the front and back of the Si wafer; depositing a SiNx passivation film on the front and back of the Si wafer; ablating a part of the AlOx film and a part of the SiNx passivation film on the back of the Si wafer; and performing screen-printing and sintering on the back of the Si wafer.

Abstract: A virtual object control method includes controlling a first virtual object in a virtual environment through a first behavior tree, the first virtual object being a Non-Player character (NPC) in the virtual environment, and obtaining a first distance between the first virtual object and a second virtual object controlled by a player in the virtual environment, the second virtual object being a closest virtual object controlled by a player to the first virtual object. The method further includes selecting, based on the first distance, a behavior tree among plural behavior trees for controlling the first virtual object. The first distance inversely relates to an amount of computing resources consumed during use of the selected behavior tree.

Abstract: An analytics portal, having a machine learning model, is deployed at an edge device in a virtualized computing environment. The machine learning model may be trained internally in the virtualized computing environment or via trained models received via an external network such as a cloud. The analytics portal is in an active mode, while another analytics portal at another host or edge device in the virtualized computing environment is in a passive mode. An election process may be used to change an analytics portal from the active mode to the passive mode. A failover process is also available to transition the passive analytics portal to the active mode, in response to a failure of the current active analytics portal.

Abstract: Methods and systems described herein are directed to determining properties of a subterranean formation using an acoustic wave-equation with a novel formulation in terms of a velocity model and a reflectivity model of the subterranean formation. The acoustic wave equation may be used with full-waveform inversion to simultaneously build velocity and reflectivity models of a subterranean formation. The velocity and reflectivity models may be employed for quantitative interpretation. The velocity and reflectivity models may be employed to determine impedance and density of the subterranean formation for prospectivity assessment. The acoustic wave equation may be also used with least-squares reverse time migration in the image or data domains, to build a reflectivity model of the subterranean formation with enhanced resolution and amplitude fidelity.

Abstract: Described is a device for testing electrical and/or electrochemical properties for a 10 cubic centimeters (cc) test cell. The device is comprised of two opposing electrodes in a test cell, wherein one or both electrodes are elongated hollow cylindrical tube(s) such that the distance between the two electrodes is adjustable and measurable. Reagents including solid in powder form, liquid, and gas are optionally introduced into the test cell through the electrode(s) that are connected to a reagent container. The test cell is a transparent insulating material such as glass, quartz, plastic, or polymer; its configuration is selected from a group consisting of an open hemicylindrical channel, a sealable cylindrical tube, or a sealable box test cell. When electrical power and/or electrical measurement equipment is attached between the electrodes, electrical and electrochemical properties are measured whilst chemical reactions are observed.

Abstract: A storage cluster may dynamically select a data transport mode for supporting a backup or export job. The storage cluster may receive a trigger indication to create, a backup of data of a source virtual machine. The storage cluster may select a data transport mode to use for reading the data from the source virtual machine to create the backup at the storage cluster. The selection may be from a set of data transport modes that includes a proxy virtual machine mode and a direct-to-host mode. The storage cluster may transmit, to a host for the source virtual machine, a request to activate the selected data transport mode, and receive the data from the source virtual machine via the selected data transport mode. The storage cluster may use the data to create the backup.

Abstract: A blockchain based numerical value ranking method includes: using, by a first participant, a public key of the first participant to encrypt a private value of the first participant to obtain an encrypted text of the first participant; obtaining encrypted texts of other participants, and generating a challenge value having a preset bit length; based on the challenge value and the private value of the first participant, and the encrypted texts and public keys of the other participants, determining mixed results of the first participant with respect to the other participants; and determining a numerical value ranking result between the first participant and a second participant based on the mixed result of the second participant with respect to the first participant.

Abstract: A track restoration method, a track restoration device and a non-transitory computer-readable storage medium are provided, related to the field of intelligent transportation. The track restoration method includes: acquiring vehicle-passing data in a target area, where the vehicle-passing data is generated based on shooting data, and the shooting data is obtained by shooting a vehicle in the target area by a shooting device in the target area; restoring a driving track of the vehicle shot by the shooting device, based on the vehicle-passing data.

Abstract: A method for making inorganic mineral hydrogels is provided. In one aspect, a first solution including one or more metal cations from one or more inorganic precursors is used. The metal cations are one or more of Fe, Mg, Ca, Co, Ni, Zn, Ti, Cu, Sn, or Mn. A second solution includes one or more polyoxometalates of Mo, W, V, Nb, or Ta. The first and second solutions are mixed together to form the inorganic mineral hydrogel. In one example, an aqueous solution of ferric chloride hexahydrate (FeCl3·6H2O) is mixed with an aqueous solution of ammonium molybdate tetrahydrate ((NH4)6Mo7O24·4H2O), under ambient conditions. The two reactants first form a yellow precipitate (FeMo2Ox(OH)y), which subsequently dissolves back into the solution to gradually produce a viscous hydrogel that traps a large volume of water.

Abstract: Methods and systems for capturing notes on a mobile device include displaying a lock screen on the electronic display of the mobile device and operating the mobile device in an active interaction state provides write-only to a secure file on the mobile device and that that provides write-only access to the secure file on the mobile device. The mobile device may render user inputs on top of the lock screen in a user input area on the mobile device display for a period of time, use the write-only access to store the user inputs in the secure file, and cease rendering the user inputs in response to detecting expiration of the period of time or in response to detecting user inactivity.

Abstract: A generating device based on friction drive for gear involute artifact with long-rolled path length by rolling method is proposes. The device includes a roller component, rail component and friction-driven component, wherein the roller component consists of a gear involute artifact with long rolled length, a mandrel, a multi-ball bearing for gear involute artifact, the base-circle plates, the parallel sleeves, a multi-ball bearing, the plain washers, the cross washers, and the locking nuts; the rail component consists of a foundation, a location baffle for base-circle plates, rails, the baffles, a location baffle for rail, copper washers, the connecting screws and the set screws of the rail; and the friction-driven component consists of a friction block, a motorized linear sliding table, a vertical sliding table, a vertical foundation and an adapter. It has good market application prospect and popularization value.

Abstract: According to examples, a display system may include a wearable eyewear arrangement that may include a lens assembly having a projector to propagate display light associated with an image. The lens assembly may also include a waveguide for propagating the display light to an eyebox. The waveguide may include a combination of a volume Bragg grating (VBG) component and a partial reflective component that are oriented in a pre-determined configuration to reflect or propagate the display light to maximize a coverage in field of view (FOV) at the eyebox, while minimizing at least one of a ghost image or an intercepting optical lines pattern.

Abstract: According to examples, a display system may include a wearable eyewear arrangement that may include a lens assembly having a projector to propagate display light associated with an image. The lens assembly may also include a waveguide configuration for propagating the display light to an eyebox. The waveguide configuration may include a volume Bragg grating (VBG) component for propagating the display light from a projector to an eyebox. The VBG component may include at least one tilt adjusted grating facilitated by adjustment in an original grating vector (k) direction of a grating by a pre-determined value. The tilt adjusted grating may facilitate to mitigate a rainbow effect observable in a gazing direction of the eyebox. The rainbow effect may be mitigated by modification of a rainbow ghost path away from the gazing direction without affecting propagation of the image pertaining to the display light.

Abstract: Provided in the present invention is an explosion-proof lighting device, comprising: a device body for accommodating the explosion-proof lighting device, the device body comprising a mounting portion located in the middle portion thereof and a first heat dissipation portion and a second heat dissipation portion that extend from the bottom of the mounting portion to two sides; a plurality of light emitting diodes (LEDs) for emitting light to illuminate; an electrical drive module for powering the light emitting diodes; and a seal cover detachably connected to the device body from the bottom thereof.

Abstract: Using a set of menu to key process mappings, historical menu usage data for an application is aggregated into aggregated key process usage data. A set of key process association rules, each comprising a consequent key process given a particular antecedent key process, is generated. From the set of key process association rules and a set of ranked menus by frequency of usage within each key process, a set of model menu recommendations is generated. According to an application usage history, a menu frequency ratio, and a confidence value of a modelled next menu, the set of menu recommendations is scored. A scored menu recommendation having a rank below a threshold rank is pruned from a set of menu items of the application ranked according to their scores. The pruned set of scored menu recommendations is presented for selection instead of the set of menu items.

Abstract: A profiling and laminating device includes: a fixture, a carrier film, a first driving assembly and a second driving assembly. The fixture includes a first main surface, a curved transition surface and a second main surface that are connected in sequence, and the first main surface and the second main surface are located on two opposite sides of the fixture, respectively. A surface of the carrier film is used for carrying a flexible display panel, and another surface of the carrier film is used for covering at least the first main surface and the second main surface of the fixture. The first driving assembly is used for driving the fixture to move. The second driving assembly is used for driving the carrier film to move.

Abstract: The present disclosure relates to the technical field of cutting machining, and discloses a cross-scale structure feature surface machining method based on a multi-component collaborative vibration. A vibration in a z-axis direction is applied to a servo movement mechanism to realize the cutting of a micron-scale structure and the adjustment of the cutting depth; and the vibration in the z-axis direction is applied to a three-axis movement platform to realize the cutting of a millimeter-scale structure and the adjustment of the cutting depth. A required cross-scale structure feature surface can be machined and formed at one time through a collaborative vibration among a vibrating tool, a servo movement mechanism, and/or a three-axis movement platform according to the structure type contained in the required cross-scale structure, which can simplify a process flow and improve the machining efficiency, and has high economic efficiency.