Abstract: The multi-turn dialogue system based on retrieval includes the following modules: a representation module, a matching module, an aggregation module and a prediction module; the multi-turn dialogue method based on retrieval includes the following steps: (1) by a representation module, converting each turn of dialogue into a cascade vector of the dialogue, and converting a candidate answer into a cascade vector of the candidate answer; (2) by a matching module, dynamically absorbing context information based on a global attention mechanism, and calculating a matching vector; (3) by aggregation module, obtaining a short-term dependence information sequence and a long-term dependence information sequence; (4) by a prediction module, calculating the matching score of the context and candidate answer involved in the matching; (5) selecting a candidate answer with the highest matching score as a correct answer.

Abstract: A giant cavity surface-emitting laser includes a giant cavity, a lower Bragg reflector, and an upper Bragg reflector. The giant cavity includes a multi-junction active region containing at least two active layers, and the giant cavity includes at least one of: an anti-reflection light reservoir located between the multi-junction active region and the lower Bragg reflector or an anti-reflection light reservoir located between the multi-junction active region and the upper Bragg reflector, where the anti-reflection light reservoir is configured to increase an optical field intensity peak of the anti-reflection light reservoir to a value higher than an optical field intensity peak of the multi-junction active region and store optical field energy, and a current confinement layer defining a light-emitting region is disposed within the multi-junction active region or near the outer side of the multi-junction active region.

Abstract: An electric adjustable bed is provided. The electric adjustable bed includes a bed frame body, a cantilever assembly, and a linear actuator, where the bed frame body includes a bed framework and a movable bed frame that is rotatable relative to the bed framework; the cantilever assembly is located below the bed frame body and connected to the bed frame body; the cantilever assembly is provided with a mounting point, and includes a first pull rod and a second pull rod; the first pull rod, the second pull rod, and the bed framework form a triangular support structure; the linear actuator includes an actuator body and a driving end; and the driving end and the actuator body are rotatably connected to the movable bed frame and the mounting point.

Abstract: A fluidized bed reactor, a device, and a method for producing low-carbon olefins from oxygen-containing compound are provided. The fluidized bed reactor includes a reactor shell, a reaction zone, a coke control zone and a delivery pipe, where there are n baffles arranged in the coke control zone, and the n baffles divide the coke control zone into n sub-coke control zones which include a first sub-coke control zone, a second sub-coke control zone, and an nth sub-coke control zone; at least one catalyst circulation hole is provided on each of the n-1 baffles, so that the catalyst flows in an annular shape in the coke control zone, where n is an integer. The device and method can be adapted to a new generation of DMTO catalyst, and the unit consumption of production ranges from 2.50 to 2.58 tons of methanol/ton of low-carbon olefins.

Abstract: A low-dropout regulator for low voltage applications includes a buffer circuit being arranged between an output terminal of an error amplifier and a control node of a pass device. The buffer circuit includes a driver having a first transistor being embodied as an NMOS transistor. The output terminal of the error amplifier is coupled to the control node of the first transistor. The control node of the pass device is coupled to an internal node of a first current path including the first transistor. The low-dropout regulator has high load capability, even if an input supply voltage is very low.

Abstract: A distal end assembly of a medical device comprising a clevis; a bushing at a proximal end of the clevis; an end effector pivotally connected to a distal end of the clevis; a distal actuator connected to the end effector; and a shaft connector. Translation of the distal actuator actuates the end effector. The bushing is within the shaft connector and rotatable relative to the shaft connector.

Abstract: A tungsten-base alloy material and a preparation method therefor. The preparation method comprises: 1) evenly grinding composite powder containing tungsten and zirconium oxide, and then performing annealing treatment at 700-1000° C. to obtain powder A; and 2) grinding and then compression moulding the powder A, and then performing liquid-phase sintering to obtain a tungsten-base alloy blank so as to obtain the tungsten-base alloy material.

Abstract: A hand tool includes a first jaw, a first handle fixed to the first jaw, a second jaw, and a second handle pivotally coupled to the second jaw, a link member, and an adjustment member. The adjustment member is operable to axially move a first end of the link member to vary a distance between the first and second jaws. The adjustment member includes an engagement surface engageable with the first end of the link member, a shank in threaded engagement with a bore in the first handle, and a flange extending from the shank opposite the engagement portion. The flange includes a first side, a second side opposite the first side, and an elongate opening extending through the first and second sides.

Abstract: A full-fiber burner brick and a preparation method thereof, comprising mixing alumina crystal fiber and amorphous ceramic fiber with both of them being a combination of fibers of different lengths gradations, and moreover adding fine powder fillers of different particle size gradations and supplementing other additives. This enables the internal structure of the product more uniform, increases the bulk density of the product, and also benefits the suction filterability of fiber cotton blank, and is conducive to forming and improving the strength of the blank. The surface of the brick body is further provided with a coating, which can effectively protect the cotton fiber of the brick body fiber from harsh environments, improve its high temperature resistance, and help to extend the service life of the burner brick.

Abstract: A mesoporous cerium oxide nano-material and a preparation method and an application thereof are provided in the present disclosure, belonging to the technical field of porous materials. The preparation method includes the following steps: using porous organic frameworks material as a templating agent, impregnating and adsorbing cerium salt precursor under an action of alkali, and removing the templating agent by roasting pyrolysis to obtain the mesoporous cerium oxide nano-material. POFs is carbonized into mesoporous carbon materials by calcination in inert atmosphere, which supports the mesoporous channels of cerium oxide, and then the carbonized carbon materials of POFs are removed by calcination in air atmosphere, forming the mesoporous structure of cerium oxide. The mesoporous cerium oxide nano-material prepared by the present disclosure has a high specific surface area and mesoporous structure, and is used as a catalytic material or catalyst carrier.

Abstract: A computer-implemented method is provided. A dataset comprising a covariate matrix, a treatment vector, and an outcome vector is received. Using a trained causal model applied to the dataset, an inverse probability weighted (IPW) model estimation of treatment effect is generated. An inverse probability weighted estimation of groundtruth treatment effect is computed. A causal treatment error is calculated based on the inverse probability weighted model estimation of treatment effect and the inverse probability weighted estimation of groundtruth treatment effect.

Abstract: A dual active bridge circuit includes a primary side circuit including first high-side transistor and a first low-side transistor electrically coupled at a first node, and an energy transfer inductor coupled to the first node and configured to provide an inductor current based on a voltage differential across the energy transfer inductor. A secondary side circuit includes a second high-side transistor and a second low-side transistor electrically coupled at a second node. A transformer is configured to transfer energy from the primary side circuit to the secondary side circuit based on the inductor current. A controller is configured to drive each of the transistors between respective switching states with a same duty cycle to control the voltage differential across the energy transfer inductor. The same duty cycle is less than 50% such that all of the transistors are simultaneously off for a predetermined interval.

Abstract: The disclosure relates to methods and processing assemblies for selectively depositing organic polymer material on a first surface of a substrate relative to a second surface of the substrate by a cyclic deposition process is disclosed. The method comprises providing a substrate in a reaction chamber, providing a first vapor-phase organic reactant into the reaction chamber and providing a second vapor-phase organic reactant into the reaction chamber. In the method, the first and second vapor-phase organic reactants form the organic polymer material selectively on the first surface; and the first vapor-phase reactant comprises a cyclic compound comprising at least two primary amine groups.

Abstract: In certain examples, a causal inference model is trained on a re-balancing task in a self-supervised manner, using ‘unlabelled’ training data pertaining to multiple domains. Rather than approaching casual inference as a domain-specific task (e.g., designing one causal-inference approach for a particular manufacturing application, another for a particular aerospace application, another for a specific medical application etc.,) a general-purpose causal inference mechanism is learned from a large, diverse training set that contains many treatments dataset over many field/applications (e.g., combining manufacturing data, engineering data, medical data etc. in a single dataset used to train a single neural network). In other words, a cross-domain causal inference model is trained, which can then be applied to a dataset in any domain, including domains that were not explicitly encountered by the neural network during training.

Abstract: In certain examples, a zero-shot model selection mechanism is provided. N synthetic validation sets are generated (with synthetic ground truth) that are overall representative of a given task (where N is one or greater). M candidate models (or algorithms more generally) are determined that are appropriate to the given task. In a validation stage, each of the M models is applied to each of the N synthetic validation sets, and the model output is scored relative to the corresponding synthetic ground truth. This, in turn, allows a best-performing model of the M models to be determined for each of the N synthetic datasets. Having determined the best-performing candidate model for each of the N synthetic datasets, an “algorithm selector” is trained to predict which of the M candidate algorithms will perform best on a given dataset.

Abstract: The present disclosure provides a preparation method of a mesoporous CeO2-loaded Au catalyst, products and applications thereof, and belongs to the technical field of fine organic chemical industry. According to the present disclosure, firstly, COFs material COFs-41 is employed to prepare mesoporous CeO2 carrier material with high specific surface area; then, Au nanoparticles loaded on the surface of mesoporous CeO2 carrier pores are anchored by impregnation-reduction method to produce Au@CeO2 catalyst with high specific surface area; and then, mesoporous Au@CeO2 catalyst with high specific surface area, aromatic alcohols are added to a reactor, anhydrous methanol is used as a solvent, and heating is carried out to react in an atmosphere of atmospheric oxygen for a certain period of time at room temperature, and this catalyst catalyzes the oxidative transesterification of aromatic alcohols for synthesis of aromatic esters in a highly selective manner.

Abstract: A processor comprises an execution unit and a performance switching module coupled to the execution unit. The performance switching module includes a control unit, a clock control unit, a voltage control unit and a multi-cycle path control unit. The control unit is configured to output at least one control instruction according to a performance requirement of the processor. The clock control unit is configured to receive a clock adjustment instruction on the at least one control instruction to adjust a clock rate provided to the execution unit. The voltage control unit is configured to receive a voltage adjustment instruction of the at least one control instruction to adjust a supplied voltage provided to the execution unit. The multi-cycle path control unit is configured to receive a path adjustment instruction of the at least one control instruction to adjust a cycle number of the instruction execution cycle of the execution unit.

Abstract: In one aspect, a method, system and apparatus are disclosed for selectively depositing a layer of organic material on a substrate including a first surface and a second surface by a cyclic deposition process, the process includes providing a substrate in a reaction chamber, providing a first vapor-phase precursor in the reaction chamber, and providing a second vapor-phase precursor in the reaction chamber, where the first and second vapor-phase precursors form the organic material selectively on the first surface relative to the second surface, and where the first vapor-phase precursor includes a diamine or triamine compound.