Abstract: Provided is a data labeling method based on artificial intelligence, an apparatus, and a storage medium relating to the field of artificial intelligence, particularly data labeling, image recognition, and natural language processing. The method includes: determining a plurality of samples involved in clustering; performing a plurality of following operations circularly to realize iterative processing, until a convergence condition is satisfied or a quantity of iterations reaches a number threshold, comprising: pre-clustering the plurality of samples according to a vector representation of the respective samples to obtain a plurality of class clusters, each class cluster containing at least one sample; receiving labeling information for the respective class clusters and re-determining the plurality of samples according to the labeling information; and determining a clustering result according to the labeling information for the respective class clusters.

Abstract: A method for reducing the risk of burning and explosion in a deoxygenation process of an oxygen-containing gas includes multiple steps. According to this method, in the presence of a gaseous alkane, hydrogen reacts with an oxygen-containing gas from which an unsaturated hydrocarbon has been removed. The oxygen-containing gas contains the oxygen and the unsaturated hydrocarbon, and the content of the oxygen in the oxygen-containing gas is greater than 0.5% by volume. A gaseous alkane is introduced to reduce the risk of burning and explosion of a mixed gas. A hydrocatalytic reaction is carried out to promote oxygen in the mixed gas to react with hydrogen to produce water, which removes oxygen from the oxygen-containing gas and also effectively inhibits carbon deposition on the surface of a catalyst and the production of a carbon oxide, which enhances the toleration for fluctuation of the oxygen content in a raw gas.

Abstract: The present disclosure provides a method for predicting a three-dimensional frost heaving deformation of a formation during freezing construction of a metro tunnel and relates to the field of metro tunnel construction. The method includes: firstly determining a freezing construction position, obtaining soil horizon parameters of undisturbed soil within a range of a freezing wall, determining thermophysical and mechanical parameters of soil, layering a soil horizon above the freezing wall according to soil horizon properties thereof and existing buildings (structures), and determining a horizon where a frost heaving influence range exists; subsequently calculating an unsteady temperature field of a single freezing pipe and a radius of a freezing front; then calculating an inner radius and an outer radius of the freezing front after closure of the freezing wall according to a tunnel excavation type, and calculating a frost heaving region; and finally calculating a frost heaving displacement.

Abstract: A power module, having a bottom substrate, a device substrate arranged on the bottom substrate and an inductor assembly arranged on the device substrate. The device substrate having a first power device chip and a second power device chip embedded within the device substrate. Each power device chip has a first surface and a second surface. The first surface of each power device chip is covered by a top heat layer, and the second surface of each power device chip has a plurality of pins or pads exposed on the second surface of the device substrate, and connected to the bottom substrate.

Abstract: A power module having a bottom substrate, a device substrate arranged on the bottom substrate and an inductor assembly arranged on the device substrate. The inductor assembly has a first winding, a second winding, a first magnetic core part and a second magnetic core part. The first magnetic core part has a first portion disposed on a first horizontal level and a second portion disposed on a second horizontal level. The second magnetic core part has a first portion disposed on the second horizontal level and a second portion disposed on the first horizontal level. The first and second magnetic core parts are assembled to accommodate the first winding between the first portions of the first and second magnetic core part, and to accommodate the second winding between the second portions of the first and second magnetic core part.

Abstract: An electrophysiology catheter which includes an inner tube and an outer tube which are movably relative to each other, and the inner tube and the outer tube are connected with each other by an electrode assembly. The electrode assembly includes a plurality groups of base body groups and electrodes. The plurality groups of base body groups are arranged in a circumferential direction of the inner tube. The base body group connects the inner tube with the outer tube and includes base bodies distributed at intervals in the circumferential direction of the inner tube The base body is deformable and at least includes a first segment and a second segment having a first connecting point. The first connecting points of a same base body group are in contact connection with each other to form a junction.

Abstract: The present invention relates to the field of energy chemical industry, and disclosed are a gliding arc plasma reactor, and a method for converting methane by means of plasma. The reactor comprises a reactor chamber and a gliding arc plasma generator arranged in the reactor chamber, wherein the gliding arc plasma generator comprises at least two arc surface electrodes which are symmetrically distributed, such that a discharge area can be formed between the arc surface electrodes. According to the gliding arc plasma reactor provided in the present invention, the conversion rate of methane can be significantly improved when methane is converted into olefin; the selectivity of ethylene in the product is improved; and carbon deposition is significantly reduced. In addition, compared with a traditional process for preparing olefin from methane, no CO2 is generated; the ignition and explosion risk is avoided; and the reactor is safer and more environmentally friendly.

Abstract: Described are a halogenated hydroxyl terminated polyphosphoester and a prepolymer and a preparation method therefor, as well as a polyurea elastomer composition and a polyurea elastomer and an application.

Abstract: A flame arrester capable of automatically eliminating defects of a fire arresting portion. The flame arrester includes a fire arresting section, wherein the fire arresting section is provided with a fire arresting section housing, the fire arresting section housing is hollow and fire arresting section openings are respectively formed at two ends of the fire arresting section housing, blocking portions are respectively arranged at the fire arresting section openings so as to define a fire arresting cavity between the two blocking portions, a plurality of openings are formed in the blocking portion, the fire arresting cavity is filled with fire arresting particles, the fire arresting section further includes a fire arresting particle replenishment structure, and the fire arresting particle replenishment structure is configured to automatically fill the fire arresting cavity with the fire arresting particles when a gap is generated in the fire arresting cavity.

Abstract: A contact probe includes a shell having a first end and an opposed second end. The shell defines an interior chamber therein and a longitudinal axis extending through the first end and the second end. The contact probe further includes a plunger partially received within the interior chamber and extending longitudinally outward of the first end. The plunger includes a tip for electrically connecting the contact probe to an external chip. The contact probe further includes a stepped collar coupled to the shell. The stepped collar includes a first step and a second step. The second step extends about the shell and the first step extends around the plunger longitudinally between the second step and the tip.

Abstract: A hydrogen leakage detecting material, and a preparation method therefor and the use thereof are provided. The hydrogen leakage detecting material has a color-changing substrate and an active component. The color-changing substrate is hexagonal-phase tungsten trioxide having a microstructure of a nanorod bundle formed by multiple nanorods, and the active component is noble metal nanoparticles. A starting reduction temperature of the hydrogen leakage detecting material on hydrogen is less than or equal to 100° C. The hydrogen leakage detecting material has a relatively high sensitivity to hydrogen under different conditions, and has significant color change and a shorter color change response time.

Abstract: A microreactor has a plurality of mixing units connected in sequence. Each of the mixing units has a housing in which a flow chamber is formed. An inlet portion and an outlet portion formed on two opposite ends of each mixing unit along the longitudinal direction, respectively, are in communication with the flow chamber. The mixing unit also has a first blocking portion centrally arranged within said flow chamber along a lateral direction perpendicular to the longitudinal direction, and between the inlet portion and the outlet portion, so that a first advancing passage, a second advancing passage and a mixing region are formed within the flow chamber. At downstream ends of said first passage and said second advancing passage, the microreactor is further provided with auxiliary flow-guiding portions protruding from a first side profile and a second side profile respectively and extending towards but spaced apart from each other.

Abstract: A terminal device includes a first housing made of fragments of a first material. Distribution of the fragments of the first material in the first housing is irregular to cause the first housing to have a visual appearance different from other housings made of the same material.

Abstract: Systems and methods for identification and retrieval of content for visual search are provided. An example method includes receiving data specifying a digital supplement. The data may identify a digital supplement and a supplement anchor for associating the digital supplement with visual content. The method may also include generating a data structure instance that specifies the digital supplement and the supplement anchor and, after generating the data structure instance, enabling triggering of the digital supplement by an image based at least on storing the data structure instance in a database that includes a plurality of other data structure instances. The other data structure instances may each specify a digital supplement and one or more supplement anchors.

Abstract: A solid-state circuit breaker (SSCB) module includes a module housing comprising a heatsink and having a plurality of fins extending therefrom configured to dissipate heat; and a circuit breaker circuit comprising at least one semiconductor switch connected in parallel to at least one voltage clamping element, such as, for example, at least one transient voltage suppression (TVS) diode and/or at least one metal oxide varistor (MOV), the circuit breaker circuit being integrated inside the module housing.

Abstract: The flexible display module can be curled, and may comprise: a flexible display panel having a display side and a rear side which are provided opposite to each other in a thickness direction of the flexible display panel; a first functional film layer, formed on a display side of the flexible display panel; and a second functional film layer, formed on the rear side of the flexible display panel. The ratio of the thickness of the second functional film layer to the thickness of the first functional film layer is 0.5 to 1.5, and the ratio of the elasticity modulus of the second functional film layer to the elasticity modulus of the first functional film layer is 0.5 to 1.5. The flexible display module is not prone to peeling, losing efficacy and the like.

Abstract: A multiphase converter provides an output voltage to a load. The multiphase converter receives a load event signal from the load and turns ON at a same time the phases of the multiphase converter to increase the output voltage in response to the load event signal indicating that a load current drawn by the load from the multiphase converter is about to increase. The multiphase converter increases an impedance of low-side switches of the multiphase converter in response to the load event signal indicating that the load current is about to decrease.

Abstract: Systems and methods for identification and retrieval of content for visual search are provided. An example method includes receiving data specifying a digital supplement. The data may identify a digital supplement and a supplement anchor for associating the digital supplement with visual content. The method may also include generating a data structure instance that specifies the digital supplement and the supplement anchor and, after generating the data structure instance, enabling triggering of the digital supplement by an image based at least on storing the data structure instance in a database that includes a plurality of other data structure instances. The other data structure instances may each specify a digital supplement and one or more supplement anchors.

Abstract: A power module includes a first power module and a second power module arranged below the first power module. The first power module includes at least one input pad configured to receive an input voltage and at least one power pad configured to provide an intermediate voltage. The at least one input pad is mounted on a top surface of the first power module, and the at least one power pad is mounted on a bottom surface of the first power module. The second power module includes at least one signal pad configured to receive the intermediate voltage and at least one output pad configured to provide an output voltage. The at least one signal pad is mounted on a top surface of the second power module, and the at least one output pad is mounted on a bottom surface of the second power module.