Abstract: An optical system includes a first lens having a first curved surface and a second curved surface, a second lens including a concave first surface and a flat second surface, a third lens including a first surface and a convex second surface, a reflective polarizer on the second curved surface of the first lens, a quarter waveplate on the flat second surface of the second lens, a display, a circular polarizer on the display and facing the convex second surface of the third lens, and at least one geometric phase lens between the third lens and the circular polarizer.

Abstract: An impact-sliding composite fretting corrosion testing machine suitable for a high-temperature lead-bismuth environment includes a test bench, a lead-bismuth pipeline, a test kettle, a melting kettle, an excitation system, and a gas circuit control system. The lead-bismuth pipeline is connected to the bottom of the test kettle and the bottom of the melting kettle respectively. A clamping component is set inside the test kettle. The excitation system includes a signal generator, the first power amplifier, the second power amplifier, the first exciter, the second exciter and an excitation fixture. The clamping component includes an upper support plate, a plate sample fixture, a pipe sample, a pipe sample fixture, a cantilever rod, a cantilever rod fixture, a lower support plate, a rotating block, and a movable pin shaft. The impact-sliding composite fretting corrosion testing machine solves the problem that the fretting corrosion behavior cannot be fully studied.

Abstract: A super-junction semiconductor device with an enlarged process window for a desirable breakdown voltage includes: a semiconductor substrate and an epitaxial layer deposited on the semiconductor substrate. The epitaxial layer includes a first semiconductor layer, and a second semiconductor layer disposed on the first semiconductor layer. A band gap of the first semiconductor layer is greater than a band gap of the second semiconductor layer. A super-junction structure is formed in the epitaxial layer, including at least one first epitaxial pillar of a first dopant type, and at least one second epitaxial pillar of a second dopant type. The first epitaxial pillar and the second epitaxial pillar are alternately arranged along a transverse direction. The epitaxial layer has a sandwich structure.

Abstract: Systems and methods are disclosed for training an electronic document extraction model, including the generation of the training data to train the model based on sampling a pool of electronic documents based on a rareness metric of the documents. Each electronic document has a document-level rareness metric generated, with the document-level rareness metric being based on one or more of a structural rareness metric or a content rareness metric of the document. The structural rareness metric measures the rareness of the document structure, which may be irrespective of the text content of the document. The content rareness metric measures the rareness of the document content, which may be irrespective of the document structure. The electronic documents are sampled based on the document-level rareness metrics to increase the number of rare documents in the training data without unduly biasing the sampling to optimize the training data for training the extraction model.

Abstract: The present disclosure pertains to the field of data sharing and particularly discloses an access control method based on outsourced computation and attribute-based searchable encryption on blockchain. The method comprises steps of generating a system public key and a master key, and generating a user attribute private key; formulating an access control policy to assist an outsourced encryption service provider in performing a partial encryption using a data ciphertext storage address and a symmetric key, and uploading a blockchain; generating a search trapdoor and sending the search trapdoor to the blockchain to verify the user attribute; and partially decrypting the ciphertext with assistance of the outsourced decryption service, followed by local decryption to obtain a data storage address and the symmetric key. The present disclosure alleviates the computational burden of local encryption and decryption for users, and leads to a significant improvement in data sharing efficiency and security.

Abstract: Systems and apparatus for a reduced mass substrate support are disclosed, according to certain embodiments. A front side pocket is provided for support of a substrate, while a backside pocket is provided that reduces the mass of the substrate support. By providing the backside pocket, the mass of the overall substrate support is reduced, providing faster thermal cycling times for the substrate support and reducing the weight of the substrate support for transport. Lift pin systems, according to disclosed embodiments, are compatible with existing pedestal systems by providing a hollow extension from each lift pin hole that extends from a bottom of the backside pocket to provide support for lift pin insertion and operation.

Abstract: A GraphQL query generation system uses a tunable Retrieval-Augmented Generation (RAG) architecture that includes a top-K predictor that receives natural language queries and predicts a number of items to be retrieved by a retriever for each natural language query. A retriever receives the natural language queries and in response retrieves a set of top-K attributes associated with the natural language queries and the number of items to be retrieved as provided by the top-K predictor. The retriever may be a neural database retriever that is configured to perform a multiple class hash key prediction by encoding the natural language query with a hash key and retrieving attributes that are assigned a same hash key. The GraphQL query generating large language model (LLM) receives the natural language queries and the set of top-K attributes and in response generate the GraphQL queries. The top-K predictor and the LLM are co-trained together.

Abstract: Disclosed herein provides the porous polyolefin composites, which comprise the polyolefin polymer as the matrix and embedded fillers with high aspect ratio as the reinforcing element and are mainly featured by the enhanced mechanical properties in biaxial direction. These said composites can be used as filtering semi-permeable membranes in filtration/purification of air, water or other liquids, or can be used as separators in energy industries.

Abstract: A preparation method for a morpholine-based organophosphine ligand includes the steps of: adding 1,3-dibromobenzene, morpholine, an inorganic base, and a first catalyst to a reactor under a nitrogen (N2) atmosphere, and using tetrahydrofuran (THF) as a reaction solvent; reacting a mixture at 45-55° C. for 5-7 h; lowering a reaction temperature to ?75 to ?80° C., and adding n-butyllithium (nBuLi); and raising the reaction temperature to 0° C. after stirring, and adding a second catalyst and a halophosphine reagent for reaction to obtain a morpholine-based organophosphine ligand. A method for synthesizing novel morpholine-based organophosphine ligands under mild conditions of the present disclosure has been successfully applied in palladium (Pd)-catalyzed carbon-nitrogen (C—N) bond formation reactions, demonstrating high efficiency and selectivity, simplifying reaction conditions, and broadening the scope of application.

Abstract: The mower fleet management device is configured to control a plurality of mowers to work in collaboration. Each of the mowers includes an on-board communication module and an on-board positioning and navigation module. The mower fleet management device includes: a map loading module configured to acquire a map of a working land parcel; a control terminal communication module configured to wirelessly communicate with the on-board communication modules to acquire status information of the mowers; and a working region assigning module configured to assign a working region to each of the mowers according to the status information and the map. The on-board positioning and navigation module of each of the mowers guides the mower to work in the corresponding working region according to the assigned working region.

Abstract: A method of temperature control for a chemical mechanical polishing system includes directing a gas that includes steam from an orifice onto the component in the polishing system while the component is spaced away from a polishing pad of the polishing system to raise a temperature of the component to an elevated temperature, and before the component returns to an ambient temperature, moving the component into contact with the polishing pad.

Abstract: A method of extracting information from documents. The method simplifies the extraction of information from documents by first converting them into machine-readable text via OCR. It then employs a text embedding model to represent the text as high-dimensional vectors. These vectors are clustered to pinpoint natural groupings and representative document clusters. An example document from each cluster is chosen, guided by the number of non-empty fields and its relation to other documents. This selection informs the creation of an in-context-learning prompt, which includes accurately annotated labels and a system prompt defining the task for the LLM. The LLM is then prompted to extract information from a new document's OCR text, leveraging the constructed prompt for guidance.

Abstract: A lens housing, a lens module and a light source system are disclosed. The lens housing includes a lens holder, a leans barrel, and a fixed pressing plate. The lens holder includes an accommodating cavity having an internal thread. The lens barrel is provided with a receiving cavity along an axial direction and includes an adjustment structure along a circumferential direction. An outer circumferential wall of the lens barrel is provided with an external thread matching the internal thread. The lens barrel is embedded in the accommodating cavity of the lens holder and is in threaded connection with the lens holder. The fixed pressing plate is fixed to one side of the lens barrel away from the lens holder and is capable of moving axially relative to the lens holder.

Abstract: A riding lawn mower includes a frame, a mowing device mounted to the bottom of the frame, a functional unit attached to the front of the frame, and a motor group together with a power supply mounted to the frame. The riding lawn mower also comprises a connecting device connecting the frame and the functional unit. The connecting device comprises a first connector attached on the front of the frame, a second connector attached to the functional unit, and a third connector adapted for fixedly connecting the first connector and the second connector, the first connector and the second connector respectively defining through-holes thereon, the third connector extending through the through-holes of the first and the second connectors to fixedly connect the first and the second connectors.

Abstract: A discharge circuit includes a first branch configured to be connected to a protected unit and a second branch connected in parallel to the first branch. The first branch includes a first overvoltage protection device configured to passively discharge a surge voltage. The second branch includes a second overvoltage protection device and a control switch connected in series. The control switch is configured to be connected to a control unit, and to be opened or closed based on a control signal of the control unit.

Abstract: A susceptor defining an axial direction, a radial direction, and a circumferential direction is provided. The susceptor includes a support surface for a substrate. The susceptor further includes a rim extending around a periphery of the support surface. The rim defines a plurality of pockets spaced apart from one another along the circumferential direction. The rim further defines one or more vents at each respective pocket of the plurality of pockets.