Abstract: A data processing method is provided. The method includes: obtaining first data, where the first data includes attribute information of a user or attribute information of an item in a plurality of dimensions; generating second data based on the first data, where the second data is a natural language text used to describe the attribute information; obtaining a first feature representation based on the first data through an embedding network, where the first feature representation includes a plurality of embedding vectors, and each embedding vector corresponds to one dimension; obtaining a second feature representation based on the second data through a natural language processing model, where the second feature representation includes a semantic feature of the second data; and updating the embedding network based on a difference between the second feature representation and the first feature representation, to obtain an updated embedding network.

Abstract: The present invention relates to an automatic history matching system for an oil reservoir based on transfer learning, comprising a data reading module, a population reinitializing module, an optimization module, a simulated calculation module, a comparative judgment module and an output module, wherein the data reading module reads an optimized result of an existing oil reservoir, outputs the optimized result to the population reinitializing module, obtains an initial population of a new oil reservoir by calculation and outputs the initial population to the optimization module.

Abstract: A method for simulating deep shale gas flow based on a dual-site Langmuir adsorption model is provided. The method includes: reconstructing a digital core of a deep shale gas reservoir, and extracting a pore network model; analyzing a structural parameter of the pore network model, and establishing calculation models of a free-phase shale gas conductivity and an adsorption-phase shale gas conductivity; establishing a calculation model of a shale gas conductivity for pores and throats in the pore network model, and determining the shale gas conductivity in pores and throats in the pore network model; combining the pore network model with the calculation models of the free-phase shale gas conductivity, the adsorption-phase shale gas conductivity and the shale gas conductivity in pores and throats, establishing a simulation model of a deep shale gas conductivity and simulating a flow law of deep shale gas.

Abstract: Energy harvesting devices and methods are provided. An energy harvesting device includes an adsorption layer comprising a nanoporous material and at least two electrodes in operative arrangement with the adsorption layer. The nanoporous material comprises a nonbiological nanoporous material, a nonprotein biological nanoporous material, or a combination thereof. The adsorption layer and at least two electrodes are configured to generate a voltage differential on exposure of the adsorption layer to ambient moisture.

Abstract: An electric power generation system is provided. The electric power generation system includes an electric power generation device and an ambient environment comprising an atmospheric relative humidity of at least 20%. The electric power generation device includes a thin film of protein nanowires or a nanowire composite, the thin film having an opposing first surface and second surface. The electric power generation device also includes a first electrode and a second electrode, electrically connected to the first surface and second surface, respectively, of the thin film. At least one of the first surface and the second surface of the thin film is at least partially exposed to the ambient environment. A moisture gradient and charge gradient is therefore created and maintained in the thin film to continuously generate power.

Abstract: A method of controlling communication of data packets of a communication device supporting at least a first communication protocol and a second communication protocol, the communication device comprising a control module, a first antenna module and a second antenna module respectively and communicatively connected to the control module, wherein the first antenna module is configured to receive and/or transmit data packets, and the second antenna module is configured to receive data packets only.

Abstract: A magnetic power component includes a printed circuit board and a magnetic core assembled to the printed circuit board. The magnetic core includes a magnetic core body and a plurality of heat dissipation teeth. The magnetic core body is bonded to the printed circuit board. The plurality of heat dissipation teeth is protruded from an outer surface that is of the magnetic core body and that faces away from the printed circuit board. The plurality of heat dissipation teeth and the magnetic core body are bonded through direct contact.

Abstract: An electric power generation system is provided. The electric power generation system includes an electric power generation device and an ambient environment comprising an atmospheric relative humidity of at least 20%. The electric power generation device includes a thin film of protein nanowires or a nanowire composite, the thin film having an opposing first surface and second surface. The electric power generation device also includes a first electrode and a second electrode, electrically connected to the first surface and second surface, respectively, of the thin film. At least one of the first surface and the second surface of the thin film is at least partially exposed to the ambient environment. A moisture gradient and charge gradient is therefore created and maintained in the thin film to continuously generate power.

Abstract: Provided are a thermal-hydrological-mechanical-chemical coupling exploitation experimental device for a deep oil and gas reservoir, and a simulation system. The device includes a loading bin, a sample holding bin, a true triaxial pressure loading mechanism arranged on the loading bin, a temperature control system arranged on the true triaxial pressure loading mechanism, and a monitoring system having a detection element arranged in the rock sample and the sample holding bin. A sample entry port is formed in one side surface of the loading bin. The sample holding bin has one end slidably arranged in the sample entry port, can be sealed and connected with the sample entry port, and is configured for placing and fixing a rock sample. Multiple through holes are uniformly formed on an outer end cover of the sample holding bin and are configured for detecting and adding water, gas, and oil.

Abstract: A limb movement detection and stimulation system includes an orthosis configured to receive a limb of a patient. The system also includes one or more recording electrodes mounted to the orthosis and one or more stimulation electrodes mounted to the orthosis. The one or more stimulation electrodes are configured to stimulate the limb in response to the detected intended limb movement. The system also includes a processor operatively coupled to the orthosis. The processor is configured to determine. based on data sensed by the one or more recording electrodes. that the patient intends a limb movement. The processor is also configured to determine a movement state corresponding to the limb movement. and to energize the one or more stimulation electrodes to facilitate the movement state.

Abstract: An active clamp flyback circuit includes: a clamp capacitor that is connected to a primary-side winding of a transformer and that is configured to absorb leakage inductance energy of the primary-side winding; an auxiliary switching transistor that is configured to control the clamp capacitor to perform reverse excitation power charging on the primary-side winding by using the auxiliary switching transistor; a first diode, where the first diode is connected in series between the clamp capacitor and the auxiliary switching transistor; and a second diode, where the second diode is connected between the first diode and the clamp capacitor, and the second diode is connected in series between the clamp capacitor and a primary-side auxiliary winding.

Abstract: Provided in the present disclosure are an anionic explosion-proof membrane and a preparation method therefor. A surface of the anionic explosion-proof membrane contains two layers of hardened coatings, wherein the hardened coatings respectively contain anionic agent particles with different concentrations and different particle sizes, and a certain gradient is present in the concentrations of the anionic agent. The anionic agent on the inner layer has a relatively high concentration and a relatively large particle size, and the negative ion agent on the outer layer has a relatively low concentration and a relatively small particle size; therefore, the explosion-proof membrane has an efficient and lasting negative ion release capacity.

Abstract: Provided is a method for shale gas production prediction, including: acquiring real shale gas production data, and determining a target production decline curve model according to the real shale gas production data; setting a time step for production prediction, and obtaining a linear production decline curve by performing production prediction by using the target production decline curve model based on the time step; determining target shale gas production residuals according to the linear production decline curve and the real shale gas production data, inputting the target shale gas production residuals to a long short-term memory, and obtaining a residual prediction result by performing production prediction according to the long short-term memory and the time step; and determining a target production prediction result of shale gas well to be subjected to production prediction based on the linear production decline curve and the residual prediction result.

Abstract: Provided are a secondary cured UV pressure-sensitive adhesive, and preparation methods for same and an explosion-proof film. The secondary cured UV pressure-sensitive adhesive is composed of the following materials, in percentages by mass: 31-35% of a hydroxyl-containing polyacrylate prepolymer, 6-9% of pentaerythritol triacrylate, 3-5% of 2-hydroxyl-3-phenoxy propane acrylate, 2-3% of an isocyanate curing agent, 2-3% of photo initiator 184, and 50% of ethyl acetate. The secondary cured UV pressure-sensitive adhesive is prepared by carrying out a thermal curing cross-linking reaction of a hydroxyl-containing polyacrylate prepolymer, pentaerythritol triacrylate and 2-hydroxyl-3-phenoxy propane acrylate by using an isocyanate curing agent, and initiating a free radical polymerization of pentaerythritol triacrylate and 2-hydroxyl-3-phenoxy propane acrylate by using photo initiator 184.

Abstract: An apparatus comprising a first layer, a second layer and a third layer. The first layer may comprise a plurality of first through via openings, a plurality of first blind openings and a coplanar waveguide input. The second layer may comprise a plurality of second through via openings, a plurality of second blind via openings and an aperture. The third layer may comprise a ground. The coplanar waveguide input may comprise a vertical transition to a waveguide. The first through via openings and the second through via openings may provide a through via between the first, second and third layer. The first blind via openings may provide a blind via from the first to the second layer. The second blind via openings may provide a blind via from the second to the third layer. The coplanar waveguide input may transmit an output from a circuit to the waveguide.

Abstract: The present invention discloses a high-voltage electric field low-temperature plasma cold sterilization system circuit and apparatus, and belongs to the field of frequency converter power source circuit technologies. The present invention including a power source module, a voltage/current/power adjustment module, a switch module, and a transformer module. The power source module includes a single-phase frequency converter and a first-stage inductance.

Abstract: Provided is a method for shale gas production prediction, including: acquiring real shale gas production data, and determining a target production decline curve model according to the real shale gas production data; setting a time step for production prediction, and obtaining a linear production decline curve by performing production prediction by using the target production decline curve model based on the time step; determining target shale gas production residuals according to the linear production decline curve and the real shale gas production data, inputting the target shale gas production residuals to a long short-term memory, and obtaining a residual prediction result by performing production prediction according to the long short-term memory and the time step; and determining a target production prediction result of shale gas well to be subjected to production prediction based on the linear production decline curve and the residual prediction result.

Abstract: A handle assembly and a household appliance having same. The handle assembly comprises a mounting assembly (10) and a handle (20), the mounting assembly (10) comprises a pre-mounted piece (111) and retractable elements (112), handle grooves (1111) are provided on the pre-mounted piece (111), limiting bosses (21) are provided on the handle (20), and a limiting groove (213) is provided on each limiting boss. The limiting bosses (21) fit with the handle grooves (1111) to realize the mounting of the handle (20), and the retractable elements (112) can extend into the limiting grooves (213) to lock the handle (20), ensuring the high reliability of the mounting of the handle, so that a user can mount the handle on a household appliance without other specialized tools, improving the user experience, and achieving simple and reliable handle mounting.

Abstract: In a power factor correction PFC circuit control method and a PFC circuit, a control module determines that an alternating current on a single-phase input/output terminal is in a positive half cycle. The control module turns on or turns off switching transistors on the first bridge arm and the second bridge arm, to boost a first voltage at a first parallel connection point. The control module turns on a switching transistor on the third bridge arm when determining that the first voltage is equal to a voltage of a positive bus of the direct current module. A switching loss of the PFC circuit can be effectively reduced, and performance of the PFC circuit can be improved.