Abstract: A method and a device for data migration of a blockchain. The method includes generating a state tree based on state data of accounts in the blockchain, in which the state tree is a B+ tree based on a copy-on-write technology, and each leaf node of the state tree is configured to store the state data; determining a target state tree to be migrated from the generated state tree when data migration is triggered; sending state data of the target state tree to an extended node of a master node; if migration completion information is received from the extended node, updating a data mapping table stored in the master node, in which the data mapping table is configured to represent a mapping relationship between state data stored in the extended node and the extended node; and deleting the target state tree in the master node.

Abstract: A B+-tree-based data management method includes writing, when a first write operation on a node data of a B+ tree is detected, the node data to a base page of a disk, wherein the base page contains a pointer field configured to indicate an associated delta page; creating a first delta record in a delta page based on the base page, when a first write operation on a target entry in the base page is detected; creating a second delta record in the delta page when a second write operation on the target entry is detected, the second delta record is used to record second data corresponding to the second write operation. Accordingly, a waste of disk space may be reduced, and complexity of read-write operations may be lowered.

Abstract: A structured query statement similarity detection method, a device and a medium are provided. The method includes: acquiring first and second structured query statements, and constructing corresponding first and second abstract syntax trees, a correlation degree between the root node in the abstract syntax tree and the query result of the statement being higher than a correlation degree between other nodes and the query result of the statement; traversing a node in the first abstract syntax tree, matching the traversed node with a node at a same level in the second abstract syntax tree, and obtaining a matching result of the node; and determining a statement similarity between the first structured query statement and the second structured query statement based on a matching result of a root node in the first abstract syntax tree, a matching result of a child node of the root node, and their corresponding weights.

Abstract: Disclosed is a Cas12 protein, a guide polynucleotide, an inactivated Cas12 mutant, a fusion protein or conjugate including the Cas12 protein, an isolated nucleic acid, a CRISPR-Cas12 system, a vector system, a delivery system, a cell, a pharmaceutical composition, and a kit, and uses thereof.

Abstract: A server obtains a prompt from a user device. The server determines, using an intent matching engine, that the prompt does not match any intent from a predetermined set of intents. The server determines, using a natural language processing engine based on the prompt not matching any intent from the predetermined set of intents, an intent corresponding to the prompt.

Abstract: Ultrasound image devices, systems, and methods are provided. An ultrasound imaging system, comprising an intraluminal imaging device including an ultrasound transducer array configured to obtain first signal data and second signal data representative of a body lumen, the first signal data and the second signal data associating with different imaging modes of the ultrasound transducer array; and a processor in communication with the intraluminal imaging device and configured to generate motion data of a flow within the body lumen based on the first signal data; generate structural data of the body lumen based on the second signal data; combine the motion data and the structural data based on a first threshold; and output, to a display in communication with the processor, an intraluminal ultrasound image representing the combined motion data and structural data.

Abstract: The present embodiment relates to a power management circuit and timing controller for a display device. The power management circuit optimizes power consumption by receiving analysis information from a timing controller capable of analyzing image data and changing an operating condition for a power conversion circuit based on the analysis information.

Abstract: The disclosure provides a mouldable artificial bone composite material and a preparation method thereof. The mouldable artificial bone composite material is characterized in a composition composed of a degradable polymer material and inorganic particles distributed in the polymer material. The average molecular weight of the polymer material is 1,000 Da to 20,000 Da. The inorganic particles are composed of calcium-phosphorus compounds. The artificial bone composite material has a shape of a mouldable plasticine. The disclosure provides an artificial bone composite material that can be freely shaped and injected, and the disclosure further provides a preparation method of the artificial bone composite material.

Abstract: Aspects of this disclosure relate to power delivery to chips in an array. An array of power conversion paths can be positioned vertically relative to the chips of the array. A power conversion path can convert a high voltage, low current signal to a low voltage, high current. The power conversion path can include a first power conversion stage and a second power conversion stage. The power conversion path can be implemented in a power supply module, for example.

Abstract: A server obtains a prompt from a user device. The server determines a score representing a likelihood that the prompt matches an intent. The server selects, based on the score, a modality to generate a response to the prompt. The modality is selected from a group comprising a workflow for the intent and a generative pretrained transformer engine. The server generates the response using the modality. The server transmits the response to the user device.

Abstract: An electronic device may include a first die that may include a first set of die contacts. The electronic device may include a second die that may include a second set of die contacts. The electronic device may include a bridge interconnect that may include a first set of bridge contacts and may include a second set of bridge contacts. The first set of bridge contacts may be directly coupled to the first set of die contacts (e.g., with an interconnecting material, such as solder). The second set of bridge contacts may be directly coupled to the second set of die contacts (e.g., with solder). The bridge interconnect may help facilitate electrical communication between the first die and the second die.

Abstract: Cas12 protein, guide polynucleotide, inactivated Cas12 mutant, fusion protein or conjugate including the Cas 12 protein, isolated nucleic acid, CRISPR-Cas12 system, vector system, delivery system, cell, pharmaceutical composition, and kit, and the use thereof are provided.

Abstract: Embodiments of the disclosure provide an inverter controller operable to perform inverter controller operations that include performing a continuous carrier alignment methodology on an inverter. The continuous carrier alignment methodology includes, for a current sampling period, evaluating a shape of a carrier waveform from a prior sampling period; and determining, based at least in part on an ending location of the carrier waveform from the prior sampling period, whether or not to insert an intermediate carrier shape into the carrier waveform during the current sampling period.

Abstract: Provided are a novel Cas effector protein, a gene editing system, and uses thereof. The Cas effector protein is CasRfg.3 and similar proteins. The CasRfg.3 (also referred to as Ca2) protein of the present disclosure has a relatively shorter amino acid sequence compared to the commonly used SpCas9 protein, allowing it to be easily packaged into small-capacity gene therapy vectors. The CasRfg.3 corresponds to a unique PAM sequence. Additionally, the CasRfg.3 exhibits excellent specificity in targeting and editing nucleic acid sequences, shows good adaptation to temperature variations, and has a wide temperature tolerance range, functioning effectively under high-temperature conditions, such as being capable of cleaving or modifying target nucleic acids at temperatures ranging from 25° C. to 55° C. The novel Cas effector protein of the present disclosure has significant application value in fields like gene therapy.

Abstract: An image processing method, the method includes: obtaining a compressed image of a current image, where resolution of the current image is greater than that of the compressed image; cropping out at least one composition preview image based on the compressed image; and in response to selecting a target composition image from said at least one composition preview image displayed, cropping the current image based on a cropping range indicated by the target composition image.

Abstract: An electronic device may include a first die that may include a first set of die contacts. The electronic device may include a second die that may include a second set of die contacts. The electronic device may include a bridge interconnect that may include a first set of bridge contacts and may include a second set of bridge contacts. The first set of bridge contacts may be directly coupled to the first set of die contacts (e.g., with an interconnecting material, such as solder). The second set of bridge contacts may be directly coupled to the second set of die contacts (e.g., with solder). The bridge interconnect may help facilitate electrical communication between the first die and the second die.

Abstract: A video generation method includes: first, sending a video call recording application request to a server in response to a video call recording application operation acting on a video call page; next, receiving a recording termination operation for a video call picture on the video call page, and obtaining a recording result material corresponding to the video call picture from the server; and then, generating a result video corresponding to the video call picture based on a recording result material. It can be seen that in the embodiments of the present disclosure, during the process of a video call, the server may be requested to record the current video call, and the recording result material corresponding to the video call picture is directly obtained from the server, so that a user can generate the result video corresponding to the video call picture based on the recording result material.

Abstract: An air conditioning system includes an outdoor unit and an indoor unit. The outdoor unit includes a compressor, an outdoor heat exchanger, a first expansion valve, a third expansion valve, and a subcooling heat exchanger. The indoor unit includes an indoor heat exchanger and a second expansion valve. In a cooling mode, the outdoor unit is configured to adjust an opening degree of the first expansion valve according to a relationship between a first difference and a first preset value; adjust an opening degree of the second expansion valve according to a relationship between a second difference and a second preset value; and adjust an opening degree of the third expansion valve according to a relationship between a third difference and a third preset value.

Abstract: A device is configured to receive a video stream. The device is further configured to determine video-level tags and time-stamped tags, based on at least two frames of the video stream, audio information of the video stream and an inference technique.