Abstract: The disclosed concepts relate to pretraining of machine learning models. One example method involves performing separate optimization of a first machine learning model and a second machine learning model. The first machine learning model can be optimized based at least on first predictions and the second machine learning model can be optimized based at least on second predictions. The first predictions can represent predictions of masked values in first sequences of values values, and the second predictions can represent whether or not the first values were replaced with different values predicted by the first machine learning model.

Abstract: A preparation method and a production system for hexafluorobutadiene are provided. The method includes: step (1), the organic solution of trifluoroethylene bromide and the zinc powder are respectively successively fed into a first reactor and a second reactor equipped with an initiator, zinc powder and an organic solvent, so as to obtain a solution of trifluorovinylzinc bromide. Then, the reaction solution enters a settling device for separating excess zinc powder to obtain a solution of trifluorovinylzinc bromide containing no zinc powder, and the excess zinc powder is filtered and recycled; step (2), introducing the obtained trifluoroethylene zinc bromide solution and a pre-prepared composite catalyst solution into a third reactor to perform a coupling reaction to obtain a crude hexafluorobutadiene; step (3) purifying the crude hexafluorobutadiene product obtained in the previous step to achieve a purity level of ?99.9%.

Abstract: Systems, methods, and apparatuses are described for securely federating data processing tasks on remote client devices. A computing device may cause one or more remote client devices to securely execute algorithms. The computing device may then receive, from one of those algorithms, a request for secure material usable to process data using the algorithm. The computing device may generate and transmit an encrypted challenge token, and the algorithm may respond with an updated request comprising a processed form of the challenge token. The computing device may then validate the request and, if validation succeeds, transmit the sensitive material. The computing device may then cause the remote client device to process data using the algorithm and the sensitive material.

Abstract: Provided is method for preparing hexafluoro-1,3-butadiene. The method includes: step (1), a trifluoroethenyl zinc bromide solution, a catalyst, and a first organic solvent are placed into a pressure resistant reactor, bromotrifluoroethylene is added after displacement with an inert gas, and hexafluoro-1,3-butadiene is obtained through reaction; and step (2), after the reaction is completed, a gas-phase material is allowed to pass through a circulating spray system filled with a second organic solvent to absorb excess bromotrifluoroethylene and fluoro-olefin impurities, and the unabsorbed crude hexafluoro-1,3-butadiene is purified through distillation, where the second organic solvent is selected from the polar aprotic organic solvent or ionic liquid. In the present disclosure, the method for preparing hexafluoro-1,3-butadiene through cross-coupling of bromotrifluoroethylene and trifluoroethenyl zinc bromide is realized.

Abstract: Provided in the present application is a negative pressure formation method for lithium iron manganese phosphate batteries and batteries applying the same. The method includes following steps: performing a vacuumizing process, a resting process and a charging process for a semi-finished battery cell to obtain a post-formation battery cell; the charging process is a three-stage constant-current charging process, wherein in the three-stage constant-current charging process, a charging current I, and a state of charge S are required to satisfy following relations: in a first stage constant-current charging process, I1?0.1 C, state of charge: 5%?S1?15%; in a second stage constant-current charging process, 0.05 C?I2?0.15 C, state of charge: 15%?S2?25%; and in a third stage constant-current charging process, 0.15 C?I3?0.25 C, state of charge: 35%?S3?45%.

Abstract: The present disclosure relates to chimeric pig-baboon uricase variants, Arthrobacter globiformis uricase variants, Aspergillus flavus uricase variants, and Candida utilis uricase variants, and methods of using the same to treat gout, tumor lysis syndrome, and other diseases associated with elevated uric acid levels in body fluids, including blood. Methods of producing the uricase variants disclosed herein are also provided.

Abstract: Provided in the present application is an anode active material, in which a preparation method of the anode active material includes steps as follows: in step 1, mixing graphite particles, sodium tetraborate and amorphous carbon, pulping with mixed particles prepared therefrom, thereby obtaining a mixed slurry, in which a feeding amount of materials mentioned above meets as follows: a mass of the graphite particles:a mass of the amorphous carbon=2~4:6~8, a mass of the sodium tetraborate:a mass of the graphite particles=0.07~0.12:1, and the graphite particles include synthetic graphite; in step 2, spray-drying the mixed slurry, and solid particles obtained therefrom are used as a precursor; and in step 3, heating the precursor for 18~34 hours at 2000~3000° C. so as to prepare and obtain the anode active material.

Abstract: Disclosed are systems and methods for adaptive partitioning of memory and storage resources of a first cluster node of a cluster system, comprising a plurality of nodes; wherein the first node includes one or more shards; and a client device in data communication with the plurality of nodes, wherein the first node is configured to: receive a client request, identify one of the one or more shards based on the client request, retrieve shard rules of the identified shard, determine an allocation of one or more memory slots of the identified shard based on the client request, lock the one or more memory slots, and perform one or more operations on the one or more memory slots associated with the client request based on the allocation.

Abstract: Methods and systems disclosed herein describe obfuscating plaintext cryptographic material stored in memory. A random location in an obfuscation buffer may be selected for each byte of the plaintext cryptographic material. The location of each byte of the plaintext cryptographic material may be stored in a position tracking buffer. To recover the scrambled plaintext cryptographic material, the location of each byte of the plaintext cryptographic material may be read from the position tracking buffer. Each byte of the plaintext cryptographic material may then be read from the obfuscation buffer and written to a temporary buffer. When each byte of the plaintext cryptographic material is recovered, the plaintext cryptographic material may be used to perform one or more cryptographic operations. The scrambling techniques described herein reduce the likelihood of a malicious user recovering plaintext cryptographic material while stored in memory.

Abstract: A protection device may include a varistor body an inner layer formed directly atop a first main side and a second main side the varistor body. The protection device may further include an exterior layer formed directly atop the inner layer, wherein the exterior layer is harder than the inner layer.

Abstract: Systems, methods, and apparatuses are described for crypto-material life-cycle management for tokenization and/or encryption. A computing device may generate cryptographic material comprising one or more blobs. Each of the blobs may be usable for encryption and/or tokenization for different field types and via various different encryption/tokenization algorithms. Multiple cryptographic blobs might be generated in advance for the same field type/algorithm, such that the cryptographic blobs are quickly available for use. In response to computing device requests for such cryptographic blobs, a cryptographic blob for a particular field/algorithm may be identified and transmitted. The cryptographic material may be refreshed periodically, when most and/or all of the cryptographic blobs are used up, or upon detection of a security breach. The cryptographic material may be appended based on new fields and/or algorithms such that the cryptographic material is backwards- and forwards-compatible.

Abstract: A light-emitting substrate includes: a wiring substrate including a base substrate, a wiring layer, and a first insulating protection layer, here the wiring layer including a plurality of first pad groups, the first insulating protection layer including a plurality of first openings, and an orthographic projection of the first pad group on the base substrate is within an orthographic projection of the first opening on the base substrate; a plurality of light-emitting devices at a side of the first pad groups facing away from the base substrate, here each of the light-emitting devices is bound to a corresponding one of the first pad groups; and a plurality of protection structures at a side of the light-emitting device facing away from the base substrate. Each of the protection structures includes a first part and a second part at a side of the first part facing away from the base substrate.

Abstract: Systems, methods, and apparatuses are described for securely federating data processing tasks on remote client devices. A computing device may cause one or more remote client devices to securely execute algorithms. The computing device may then receive, from one of those algorithms, a request for secure material usable to process data using the algorithm. The computing device may generate and transmit an encrypted challenge token, and the algorithm may respond with an updated request comprising a processed form of the challenge token. The computing device may then validate the request and, if validation succeeds, transmit the sensitive material. The computing device may then cause the remote client device to process data using the algorithm and the sensitive material.

Abstract: Disclosed in the present invention are an asynchronous blockchain consensus method and system with decoupled data broadcast and consensus, an electronic device and a storage medium. The system comprises a plurality of nodes, wherein the nodes may be co-served by a plurality of mutually trusted physical or virtual devices.

Abstract: The present disclosure provides a display substrate, a manufacturing method thereof, an intermediate substrate and an electronic paper display apparatus. The display substrate includes: a base substrate including a display region and a bezel region on at least one side of the display region; a plurality of test sub-terminals in the bezel region, including a common voltage test sub-terminal and a plurality of non-common voltage test sub-terminals; and a first electrostatic ring in the bezel region, through which the plurality of non-common voltage test sub-terminals are arranged in series and/or grounded.

Abstract: A technique supplements a language model with knowledge information retrieved from external sources. The technique operates by: receiving a query; receiving knowledge information based on the query; generating original model-input information that includes the query and the knowledge information; and presenting the original model-input information to the language model. The technique further includes: receiving an original response from the language model; generating a usefulness measure that identifies usefulness of the original response; and determining whether the usefulness measure satisfies a prescribed test. Upon determining that the usefulness measure does not satisfy the test, the technique includes: generating revised model-input information that includes feedback information; presenting the revised model-input information to the language model; and receiving a revised response from the language model.

Abstract: A flexible circuit board and a display module are provided. The flexible circuit board includes: a flexible substrate having a chip binding region; a driving chip, arranged in the chip binding region of the flexible substrate; and a protective layer, arranged on a side of the driving chip away from the flexible substrate, where the protective layer includes an electrostatic discharge layer, an orthographic projection of the electrostatic discharge layer on the flexible substrate at least partially overlaps with an orthographic projection of the driving chip on the flexible substrate.

Abstract: A hydraulic circuit for opening and closing a mould of an injection moulding machine, and an injection moulding machine system includes an operating oil cylinder and a proportional valve; by means of adjusting the proportional valve to different operating states, the operating oil cylinder can be controlled to execute different actions, so as to control mould opening, mould closing and mould differential closing of the injection moulding machine. By means of a differential proportional valve with a flow regeneration function, the present invention can effectively increase control precision in a mould opening and closing process, reduce energy consumption and the number of parts of a system, and save on space taken up by the system, with complete functions of mould opening and closing also being realizable.

Abstract: An eyeglasses device includes a frame, a first temple, a circuit board, and a flexible circuit board. The frame includes first and second metal parts and an insulating component connecting the first and second metal parts. Second metal part is insulated from first metal part by insulating component. At least part of appearance of the frame is formed by the first metal part and the second metal part together. The first temple is pivotally connected to the frame. The circuit board is disposed in the first temple. The flexible circuit board is disposed on the frame and the first temple and is electrically connected to the second metal part and the circuit board. The flexible circuit board includes an antenna matching circuit. The second metal part serves as an antenna, and the antenna with the antenna matching circuit is excited at a first frequency band and a second frequency band.