Abstract: Provided is a data prefetching method and device, the data prefetching method including acquiring parameters of read requests for a storage device within a prefetching time window, wherein the parameters of the read requests include at least a feature of the read requests and logical block address information of the read requests; determining, based on the feature of the read requests, a prefetching quantity of subsequent read requests for the storage device; determining, based on the logical block address information of the read requests, a prefetching quantity of prefetching chunk addresses for the subsequent read requests; and prefetching data in the prefetching quantity of the prefetching chunk addresses of the storage device.

Abstract: Provided is a method for managing a transformer core may include preliminarily obtaining a Steinmetz equation considering temperature correction factor through fitting; converting a non-sinusoidal excitation current waveform into an equivalent sinusoidal excitation current waveform for calculation, and continuing to correct the Steinmetz equation considering temperature correction factor to obtain a corrected empirical formula; and utilizing a pre-trained neural network model to process the empirical predicted value of the loss of the core and corresponding temperature, excitation current, magnetic flux density, and frequency of the excitation current to obtain a final predicted value of loss of a core to be detected. When the final predicted value of the loss exceeds a first threshold, maintenance is performed on the core to be detected; and when it exceeds a second threshold, the core to be detected is replaced.

Abstract: An optimization scheduling method for coupling microgrid considering electro-thermal load demand coordination, comprising: building hydrogen-containing microgrid operation model and building electro-thermal load demand coordination response model by considering peak-valley complementary characteristics of original electric load and thermal load in system, characterizing electric load by time-of-use electricity price demand response method, by considering thermal load having heat transfer inertia and fuzziness of user temperature perception, adjusting electro-thermal load demand flexibly based on different electricity prices; based on hydrogen-containing microgrid operation model and electro-thermal load demand coordination response model, building objective function by minimizing sum of total operation cost, wind and light curtailed cost of renewable energy and demand response compensation cost, building electro-hydrogen coupling microgrid optimal scheduling model according to constraint conditions and solvin

Abstract: A method of writing a file, including acquiring a plurality of target files to be written; determining, for each of the plurality of target files, a feature value associated with a file failure time of each of the plurality of target files; allocating a reclaim circuit handler to each target file based on the feature value of each target file such that differences between failure times of individual files contained in a reclaim circuit pointed to by the reclaim circuit handler are less than a preset threshold value, each reclaim circuit handler being one of a preset plurality of reclaim circuit handlers; writing each target file into the reclaim circuit pointed to by the reclaim circuit handler allocated to each target file.

Abstract: The present disclosure includes a data processing method. The method is executed by one or more processors of a processing near memory (PNM) device, where the PNM device comprises a PNM processor and a cache memory. The method includes pulling, from a memory of a central processing unit of a host associated with the PNM device, strip data related to target data processing and storing the strip data in the cache memory; and pulling, from the cache memory, the strip data strip by strip, and performing the target data processing.

Abstract: A computation management method for managing a database, including: transmitting, by a compute proxy, a computation request to a processing near memory (PNM) device based on determining that a computation to be performed includes a predetermined access-intensive computation in which a data transmission frequency between a processor and a memory is greater than a first predetermined threshold, and the compute proxy is selected to perform the access-intensive computation; and receiving, by the compute proxy, a notification about a computation result generated by the PNM device based on the computation request.

Abstract: Provided is a method for perceiving and eliminating an abnormal state of active distribution network based on data enhancement, including: acquiring, by synchrophasor measurement device, data of each node of active distribution network in target domain in real-time and transmitting to processor; inputting the acquired data into a classification model, and outputting abnormal detection and classification results in real time; and analyzing the abnormal detection and classification results, and transmitting an abnormal state eliminating instruction to a distribution terminal to eliminate the abnormal state.

Abstract: Provided is a method for perceiving and eliminating an abnormal state of active distribution network based on data enhancement, including: acquiring, by synchrophasor measurement device, data of each node of active distribution network in target domain in real-time and transmitting to processor; inputting the acquired data into a classification model, and outputting abnormal detection and classification results in real time; and analyzing the abnormal detection and classification results, and transmitting an abnormal state eliminating instruction to a distribution terminal to eliminate the abnormal state.

Abstract: The invention discloses a multi-functional breathing tube for humidification without water. It includes a breathing mask, the breathing mask is connected with a sputum ejector, the sputum ejector is connected with an anhydrous humidifier atomizer, and the anhydrous humidifier atomizer is connected with a medicated bin. The medicated bin is connected with a breathing hose, the breathing hose is connected with an air source device, and the gas output by the air source device is oxygen. The sputum ejector is connected with the anhydrous humidifier atomizer. The pendulum ball in the sputum ejector resonates with the sputum during the patient's deep exhalation to assist the sputum excretion from the patient's body.

Abstract: Provided are a photoelectric conversion element and a photoelectric conversion device that are thin, have high conversion efficiency, and allow device scale-up. The photoelectric conversion element includes a photoelectric conversion member containing a transition metal dichalcogenide, and a first electrode and a second electrode that are connected to the photoelectric conversion member, in which the first electrode and the second electrode include facing portions where at least a part of the first electrode and at least a part of the second electrode are arranged to face each other in a parallel manner, and a length W of each of the facing portions and a separation distance Lch between the first electrode and the second electrode at the facing portions satisfy a relationship of W/Lch?36.7. The photoelectric conversion device includes the photoelectric conversion element.

Abstract: A data processing method and device are provided. The data processing method includes acquiring hot keys read from a log structure merge (LSM) tree within a preset duration, determining a total size of the read hot keys, and adjusting a size of each of a plurality of levels of the LSM tree based on the total size of the read hot keys.

Abstract: The present invention provides a method for managing heat-electric outputs of a high-proportion new energy system based on CSP-CHP combined energy supply, which belongs to the field of new energy system optimization and are used for solving the problems of insufficient flexibility of the high-proportion new energy system during the heating period and difficult consumption of renewable energy. The method includes: establishing a concentrating solar power (CSP) unit model and a combined heat and power (CHP) unit model based on the built structure; establishing a collaborative optimization model of the high-proportion new energy system based on the proposed unit models; acquiring relevant data of various units and renewable resource data; obtaining a sum of hourly electric power outputs and a sum of hourly heat outputs; and controlling a heat storage apparatus to store or output a certain amount of heat energy.

Abstract: A method and device for configuring zones of a Zoned Namespace (ZNS) Solid State Drive (SSD) are provided. The method includes determining types of sizes of zones into which storage space of the ZNS SSD is to be divided and a number of zones having each type of size, and sending information indicating the types of the sizes of the zones and the number of zones having each type of size to the ZNS SSD such that the storage space of the ZNS SSD is divided into zones having different sizes.

Abstract: An unpowered cowl with adjustable fan blades and a waste heat recovery system for cooking fumes include a cowl body, lifting mechanisms, and a pressure sensor. The cowl body includes a top cap, a bottom ring, and the fan blades disposed between the top cap and the bottom ring. The pressure sensor is disposed on an inner wall of the top cap. An upper end of each of the fan blades is disposed above the top cap and slightly exceeds an outer edge of the top cap. The lifting mechanisms are annularly disposed on the top cap. The lifting mechanisms include lifting plates, electric pushing rods, and lifting shafts. The electric pushing rods are fixed on the top cap. The lifting shafts are connected to the fan blades. The electric pushing rods and the pressure sensor are electrically connected to a control box.

Abstract: An unpowered cowl with adjustable fan blades and a waste heat recovery system for cooking fumes include a cowl body, lifting mechanisms, and a pressure sensor. The cowl body includes a top cap, a bottom ring, and the fan blades disposed between the top cap and the bottom ring. The pressure sensor is disposed on an inner wall of the top cap. An upper end of each of the fan blades is disposed above the top cap and slightly exceeds an outer edge of the top cap. The lifting mechanisms are annularly disposed on the top cap. The lifting mechanisms include lifting plates, electric pushing rods, and lifting shafts. The electric pushing rods are fixed on the top cap. The lifting shafts are connected to the fan blades. The electric pushing rods and the pressure sensor are electrically connected to a control box.

Abstract: A data processing method and device are provided. The data processing method includes acquiring hot keys read from a log structure merge (LSM) tree within a preset duration, determining a total size of the read hot keys, and adjusting a size of each of a plurality of levels of the LSM tree based on the total size of the read hot keys.

Abstract: Provided are a compaction method and device for Sorted String Table (SST) files stored in zones of a Zoned Namespace Solid State Drive. The method includes: determining compaction priorities of a first plurality of SST files in a first level of a LSM-Tree based on attribute information of a first plurality of zones corresponding to the first plurality of SST files and a second plurality of SST files in a second level of the LSM-Tree, wherein the second level is adjacent and higher to the first level, a key range of the first plurality of SST files overlaps key ranges of SST files in the second level, and a key range of the second plurality of SST files overlaps key ranges of the first plurality of SST files. The method includes performing a compaction operation on an SST file having a highest compaction priority among the first plurality of SST files.

Abstract: A method and apparatus for optimally configuring a capacity of a high-proportion new energy system, a device, and a medium, which belong to the field of new energy system optimization and are used for solving the problems of insufficient flexibility of the high-proportion new energy system during the heating period and difficult consumption of renewable energy. The method includes: constructing a high-proportion new energy system structure; establishing a concentrating solar power (CSP) unit model and a combined heat and power (CHP) unit model based on the proposed structure; establishing a high-proportion new energy system collaborative optimization model based on the proposed unit models; acquiring relevant data of various units and renewable resource data; and obtaining a capacity configuration and operation optimization scheme of various units in the high-proportion new energy system according to the established model, thereby improving the renewable energy consumption of the system.