Abstract: A method may include obtaining various cross-spread gathers regarding a geological region of interest. The method may further include determining traveltime table data based on the cross-spread gathers. The method may further include transmitting the cross-spread gathers to various parallel processing groups in a parallel processing network. A respective cross-spread gather among the cross-spread gathers may be transmitted to a respective parallel processing group among the parallel processing groups. The method may further include determining, by various parallel processing nodes in the respective parallel processing group, a first subset of a migrated dataset using the respective cross-spread gather, a subset of the traveltime table data, a velocity model, and a migration function. The method may further include generating, based on various subsets of the migrated dataset that includes the first subset, a first seismic image of the geological region of interest.

Abstract: A wiping object cleaning device for a floor mopping machine belongs to the technical field of cleaning appliances. The wiping object cleaning device includes a bucket body, and further includes a water conveying mechanism for conveying water to a wiping object of a floor mopping machine. The water conveying mechanism conveys water during cleaning, and stops conveying water during water removal. The wiping object cleaning device is able to clean a mop of a floor mopping machine efficiently, wide in application range, suitable for different wiping objects of floor mopping machines, and low in production cost.

Abstract: An online indirect measurement method for pitching and yawing moments of a wind or tidal current turbine is provided. The method uses an online indirect measurement system including an incoming flow velocity measurement module, a generator rotation speed measurement module, a pitch angle measurement module, and a computer; the incoming flow velocity measurement module measures the flow velocity of the rotor center; the generator rotation speed measurement module measures the generator rotation speed; the pitch angle measurement module measures the pitch angle of each blade; the computer receives signals of flow velocity, generator rotation speed, and pitch angle, obtains the pitching moment and yawing moments of the turbine via an online calculation, and displays and stores the measured and calculated data in real time.

Abstract: Methods and systems for analysing a property of a cornea of an eye using terahertz (THz) radiation are provided. The method includes projecting a first THz wave onto a surface of the cornea and detecting a first reflected wave being a reflection of the first THz wave reflected from the surface of the cornea. The method further includes deforming the cornea, projecting a second THz wave onto the surface of the cornea after the deforming and detecting a second reflected wave being a reflection of the second THz wave reflected from the surface of the cornea after the deforming. Finally, the method includes calculating the property of the cornea based on the first reflected wave and the second reflected wave.

Abstract: A flexible wall device and method for measuring gas permeability coefficient and gas diffusion coefficient of unsaturated soil includes a gas washing device, a confining pressure-volume change system, a drying-wetting cycle control system and a gas measuring device. The drying-wetting cycle control system includes a humidity controller and valves. The gas measuring device includes a top lid, a cylindrical wall, a base, an upper chamber and a lower chamber. The top lid, the cylindrical wall and the base are connected by bolts and nuts, and the base has four passages, which are respectively connected to the gas washing device, the confining pressure-volume change system, the drying-wetting cycle control system and the gas measuring device, between the base and top lid are sequentially arranged from bottom to top as the lower chamber, lower perforated plate, lower permeable stone, sample, upper permeable stone, upper perforated plate, upper chamber, and control rod.

Abstract: A system and methods are disclosed. The method includes obtaining a seismic dataset including a plurality of recorded multiple events, generating a predicted multiple model using a multiple prediction method and the seismic dataset, and estimating a set of initial matching filters using a matching method, to match the plurality of estimated and recorded multiple events. The method further includes generating a tensor field based on the predicted multiple model, determining a set of structure-oriented matching filters based on the set of initial matching filters and the tensor field, generating a filtered multiple model based on the predicted multiple model and the set of structure-oriented matching filters, and generating a multiple-attenuated seismic dataset based on the filtered multiple model and the seismic dataset, forming a seismic image based, at least in part, on the multiple-attenuated seismic dataset, and determining a location of a hydrocarbon reservoir based on the seismic image.

Abstract: A control process of inclusions in ultra-clean rare earth steel, wherein the content of rare earth elements REM in the ultra-clean rare earth steel, the total oxygen content T[O]m, the total sulfur content T[S]m in the steel, and the total oxygen content T[O]r in a rare earth metal or alloy added to the steel are controlled to satisfy the following formula: ?500<REM?(m*T[O]m+n*T[O]r+k*T[S]m)<?30, where REM is the content of rare earth elements in the steel, in ppm; T[O]m is the total oxygen content in the steel, in ppm; T[O]r is the total oxygen content in a rare earth metal or alloy added to the steel, in ppm; T[S]m is the total sulfur content in the steel, in ppm; m is a first correction coefficient, with a value of 2-4.5;n is a second correction coefficient; and k is a third correction coefficient.

Abstract: A method (600) and a system (1000) for generating an adaptive migration taper for a pre-stack seismic dataset are disclosed. The method (600) includes obtaining the pre-stack seismic dataset (602) and a seismic velocity model of a subterranean region (604). The method (600) also includes generating the adaptive migration taper based, at least in part, on the pre-stack seismic dataset (606), and forming a migrated seismic image using a migration function, the seismic velocity model, the pre-stack seismic dataset, and the adaptive migration taper (608). The method (600) further includes determining a location of a hydrocarbon reservoir based, at least in part, on the migrated seismic image (610).

Abstract: A method of quantifying a plurality of parameters of a subsurface structure comprising a region of interest, the method comprising the steps of: with at least one vibratory source, emitting an input wave signal into the subsurface structure to cause generation of seismic wave signals in the subsurface structure; with at least one receiver, acquiring and measuring the seismic wave signals from the subsurface structure, wherein the seismic wave signals comprise at least one first Rayleigh wave (R1) signal and at least one second Rayleigh wave (R2) signal associated with the region of interest; generating, at a data processing apparatus, seismic data associated with measurements of the seismic wave signals; determining, at the data processing apparatus, from the seismic data a relationship between the Rayleigh wave (R1, R2) signals, wherein the Rayleigh wave (R1, R2) signals are dependent on at least one of the plurality of parameters.

Abstract: The present invention discloses an ultra-wideband cross-polarized antenna and ultra-wideband cross-polarized array antenna, including a substrate, and a first polarized antenna and a second polarized antenna provided in the substrate and orthogonal to each other. The ultra-wideband cross-polarized antenna has a simple structure, is easy to produce and is able to solve challenging bandwidth issues, cross-polarized port isolation issues, and beam scanning range issues in 5G millimeter wave array antennas.

Abstract: Disclosed are a high-power repeat-frequency solid-state switch controlled by a combination of an optical amplification and an electrical amplification, and a method.

Abstract: Systems and methods are disclosed. The method includes, for each of a plurality of spatial partial differential equations (sPDEs) within a wave equation, determining a linear system of equations using an approximate solution at a plurality of grid nodes. The linear system of equations includes an inverse matrix, a first vector, and a second vector. The method further includes, for each of the plurality of sPDEs, evaluating the inverse matrix by evaluating a first portion of the inverse matrix using a first deconvolution filter and evaluating a second portion of the inverse matrix using a second deconvolution filter. The method further still includes, for each of the plurality of sPDEs, evaluating the first vector using the evaluated inverse matrix and the second vector as well as determining the wavefield using the evaluated first vector for each of the plurality of sPDEs, a velocity model, and the wave equation.

Abstract: Disclosed are a high-power repeat-frequency solid-state switch controlled by a combination of an optical amplification and an electrical amplification, and a method.

Abstract: Sign frame system and components of sign frame systems for bag signs and fold-over signs are described. The sign frame system can comprise a plurality of frame sections with at least one frame section connected to at least one other frame section by a sleeve connector having a connector outer sleeve and a connector inner sleeve axially aligned with the connector outer sleeve and a connector dimple formed therein. The sign frame system also can comprise a first frame section connected to a second frame section with each of the first and second frame sections comprising a tenon projecting from an end shoulder aligned at an end of the respective frame section, wherein the first and second frame sections mate by the alignment of the tenons.

Abstract: This application provides a data processing method and a storage device, and belongs to the field of storage technologies. In this application, the storage device performs deduplication and compression based on different granularities, deduplicates data based on a large granularity, and compresses the data based on a small granularity. Therefore, a limitation that a deduplication granularity and a compression granularity need to be the same is removed. A deduplication ratio decrease caused by an excessively large granularity and a compression ratio decrease caused by an excessively small granularity are avoided to some extent, to improve an overall reduction ratio of deduplication and compression.

Abstract: The present application discloses techniques for live streaming based on virtual images. The techniques comprise providing a live streaming interface, the live streaming interface including a virtual character; generating a target motion instruction for the virtual character, the target motion instruction being generated based on an input operation other than image capture; and controlling, in response to the target motion instruction, the virtual character to perform a target motion associated with the target motion instruction. According to the techniques of the present application, few computing resources are occupied.

Abstract: A method may include obtaining seismic data regarding a geological region of interest. The seismic data may correspond to a seismic survey that is divided into various bins in a predetermined bin grid. The method may further include determining a first multiblock bin within the seismic survey. The first multiblock bin may correspond to a source bin and a receiver bin among the bins. The method may further include determining traveltime table data using the seismic data and various multiblock bins that include the first multiblock bin. The method further includes determining migrated data using the seismic data, the traveltime table data, a velocity model, a migration function, and various parallel processors. The method further includes generating a seismic image of the geological region of interest using the migrated data.

Abstract: An application of fengycin family lipopeptides in pest control is provided, and Fengycin family lipopeptides are used for pest control, with especially strong killing effects on Homoptera and Coleoptera pests. A method is provided for treating seeds with fengycin to protect seeds and plant organs formed later from pests, so as to protect seeds from pests by coating the fengycin family lipopeptides on the surface of seeds.

Abstract: A method is described that includes obtaining a multicomponent seismic data set for a subterranean region of interest and determining, using a computer processor, a PP stacked time-domain seismic image and a PS stacked time-domain seismic image from the multicomponent seismic data set. The method further includes transforming a recording-time axis of at least one of the PP stacked time-domain seismic image and the PS stacked time-domain seismic image to produce a pair of coarsely-registered PP and PS seismic images and filtering at least one of the pair to produce a pair of spectrally-matched PP and PS seismic images. Further, the method includes dynamically warping at least one of the pair of spectrally-matched PP and PS seismic images to produce a pair of fully-registered PP and PS seismic images.