Abstract: A method for testing an optical link based on optical frequency domain reflectometry includes: measuring, by a frequency domain reflectometer, a return optical signal in an optical link in an initial state, to obtain a first signal; measuring, by the frequency domain reflectometer, a return optical signal in the optical link in a changed state, to obtain a second signal; performing a fast Fourier transform on the first signal and the second signal, respectively, to obtain a frequency domain signal of the first signal and a frequency domain signal of the second signal, whereby obtaining a relationship curve between a distance and a frequency shift; extracting and converting same frequency band from two frequency domain signals by using a sliding window into time domain signals, and performing a cross-correlation calculation on two set of time domain signals to obtain a Rayleigh scattering frequency shift.

Abstract: A distillation system extracts knowledge from a large pre-trained sequence-to-sequence neural transformer model into a smaller bi-encoder. The pre-trained sequence-to-sequence neural transformer model is trained to translate data from a first domain into a second domain on a large corpus. A teacher model is generated from the pre-trained model by fine-tuning the pre-trained neural transformer model on a smaller translation task with true translation pairs. The fine-tuned model is then used to generate augmented data values which are used with the true translation pairs to train the bi-encoder. The bi-encoder is used for perform cross-domain searches.

Abstract: A data sharing method and a data sharing apparatus based on a blockchain are provided, aiming to solve the problem that the existing data sharing cannot meet the sharing requirement of a multi-party collaborative complex scene of combining an industrial blockchain, an Internet of things and an industrial Internet, which relates to the technical field of the blockchain technology. The method includes: creating a multi-chain shared network structure matched with a target service scene, creating shared data and cross-chain link structure of original data, and storing the shared data and cross-chain link structure on the service chain through the cross-chain router; and when the service system sends a query transaction of a target service chain through the cross-chain router, querying a target shared data and cross-chain link structure of the target service chain, and further querying the linked shared data and cross-chain link structure of the linked service chain.

Abstract: The present disclosure relates to a micropump device for creating a net fluid flow along a flow direction. The device includes a fluid channel and a plurality of piezoelectric transducers arranged adjacent to the fluid channel. The piezoelectric transducers are organized into a set of at least three groups. The groups are consecutively arranged along the flow direction, and each group includes at least one piezoelectric transducer. A controller of the device is configured to actuate the piezoelectric transducers using at least three periodic electrical control signals. Each electrical control signal is associated with one group of the set. The controller is configured to consecutively delay the at least three electrical control signals, in accordance with the consecutively arranged groups of the set, to create the net flow of fluid along the flow direction.

Abstract: A method includes obtaining feature generation code from, which is configured to determine features relating to input data. The method further includes obtaining data grouping code, which is configured to generate training data by determining a plurality of data groupings for the features relating to the input data. The method further includes obtaining modeling code, which is derived at least in part by applying one or more machine learning algorithms to the training data. The method further includes applying a model wrapper code to the feature generation code, the data grouping code, and the modeling code to generate a model wrapper and deploying the model wrapper such that the model wrapper may receive a first application programming interface (API) call including an input data value, determine a score relating to the input data value, and send a second API call including the score in response to the first API call.

Abstract: A radiation exposure dose management apparatus according to an embodiment is a radiation exposure dose management apparatus that manages a radiation dose received by a subject and includes processing circuitry configured: to obtain image data of the subject; to segment the image data in accordance with organs of the subject; to generate a voxel radiation dose distribution map indicating a radiation exposure dose of each of the voxels on the basis of a specific radiation exposure dose model and the image data; and to calculate a radiation exposure dose of each of the organs on the basis of the segmented image data and the radiation exposure dose of each of the voxels within the generated voxel radiation dose distribution map.

Abstract: A preparation method of high-performance cerium (Ce)-rich misch-metal (MM) permanent magnetic materials includes: (1) an as-sintered Ce-rich MM permanent magnetic substrate magnet is prepared; (2) a composite diffusion source is obtained by proportionally mixing rare earth (RE) hydride powder and nanometer metallic powder, and the as-sintered Ce-rich MM permanent magnetic substrate magnet is performed with a first surface diffusion treatment using the composite diffusion source to obtain an intermediate product; (3) the intermediate product is subjected to a second surface diffusion treatment with RE alloy powder; (4) a high-temperature heat treatment is performed; and (5) a low-temperature heat treatment is performed to obtain the high-performance Ce-rich MM permanent magnetic materials.

Abstract: A cloud computing technology-based data migration method includes a cloud management platform that creates a first storage instance in a first cloud data center in a plurality of cloud data centers, where the first storage instance is mounted with a second storage instance. The cloud management platform creates a first computing instance in the first cloud data center or a second cloud data center in the plurality of cloud data centers, where the first computing instance sends a data read request to the first storage instance, and when the first storage instance does not have target to-be-accessed data to be read by the data read request, the first storage instance finds the target to-be-accessed data from the plurality of pieces of to-be-accessed data stored in the second storage instance, stores the target to-be-accessed data, and provides the target to-be-accessed data to the first computing instance.

Abstract: An all-silicon carbide micro-electro-mechanical system (MEMS) acceleration-pressure integrated sensor chip includes a first patterned silicon carbide plate, a MEMS acceleration sensor chip, a second patterned silicon carbide plate, a MEMS pressure sensor chip and a third patterned silicon carbide plate fixedly connected in sequence. The MEMS acceleration sensor chip has an eight-beam and five-mass-block structure. The MEMS pressure sensor chip includes an arc-shaped cross beam and four circular diaphragms. A method for preparing the integrated sensor chip is also provided.

Abstract: A method for improving magnetic properties of a Ce—Y-rich rare earth permanent magnet is provided, and the Ce—Y-rich rare earth permanent magnet is subjected to pressurized heat treatment to improve magnetic properties. The method includes: preparing a pristine magnet through a sintering process; and placing the pristine magnet into a pressurized heat treatment device and performing pressurized heat treatment under the protection of an argon atmosphere. By regulating parameters such as pressure, temperature and holding time in the heat treatment process, element diffusion in the Ce—Y-rich permanent magnet is promoted, and coercivity, remanence, magnetic energy product and temperature stability of the Ce—Y-rich permanent magnet are improved. The method has advantages of a simple process with low energy consumption, a substitution amount of rare earths Ce—Y up to 90 wt % while having excellent magnetic performance, so that a way for efficient utilization of high-abundance rare earths Ce and Y is provided.

Abstract: The present invention relates to a method for inducing proliferation and/or differentiation of hematopoietic stem/progenitor cells, the method comprising activating the y-aminobutyric acid pathway of hematopoietic stem/progenitor cells. The present invention also provides a culture medium for inducing proliferation and/or differentiation of hematopoietic stem/progenitor cells into NK cells and use thereof.

Abstract: Aspects of the disclosure provide for automatically generating labels for sensor data. For instance, first sensor data for a vehicle may be identified. This first sensor data may have been captured by a first sensor of the vehicle at a first location during a first point in time and may be associated with a first label for an object. Second sensor data for the vehicle may be identified. The second sensor data may have been captured by a second sensor of the vehicle at a second location at a second point in time outside of the first point in time. The second location is different from the first location. A determination may be made as to whether the object is a static object. Based on the determination that the object is a static object, the first label may be used to automatically generate a second label for the second sensor data.

Abstract: The present disclosure provides a method for optimizing parameters of a ladder-type carbon trading mechanism based on an improved particle swarm optimization (IPSO) algorithm. The method first obtains information and operating data of a park-level integrated energy system, establishes equipment models and constraints of the park-level integrated energy system, and establishes a ladder-type carbon trading model; then encapsulates a process of optimized low-carbon dispatching of the park-level integrated energy system as a fitness function whose input is parameters of a carbon trading mechanism and output is a carbon emission of the system; and finally, introduces an IPSO algorithm to optimize the fitness function, and outputs optimization result information of the algorithm. The present disclosure verifies effectiveness and rationality of the model and the method that give full play to a role of the ladder-type carbon trading mechanism in the park-level integrated energy system through example analysis.

Abstract: Provided is a method of producing human induced pluripotent stem cells from human somatic cells, including a step of homologous recombination and a step of integrase-mediated reaction.

Abstract: The present disclosure relates to the technical field of antennas, and discloses a control method, a control component and a control device.

Abstract: Aspects of the disclosure provide for automatically generating labels for sensor data. For instance, first sensor data, for a vehicle may be identified. This first sensor data may have been captured by a first sensor of the vehicle at a first location during a first point in time and may be associated with a first label for an object. Second sensor data for the vehicle may be identified. The second sensor data may have been captured by a second sensor of the vehicle at a second location at a second point in time outside of the first point in time. The second location is different from the first location. A determination may be made as to whether the object is a static object. Based on the determination that the object is a static object, the first label may be used to automatically generate a second label for the second sensor data.

Abstract: An automated system for detecting performance bugs in a program and for providing code recommendations to improve the performance of the program generates a code recommendation table from performance-related pull requests. The performance-related pull requests are identified in part from a classifier trained on semi-supervised data. A code recommendation table is generated from performance-related pull requests and is searched for similarly-improved code based on a set of difference features that includes structural and performance features of the before-code of a pull request that is not in the after-code.

Abstract: A preparation method of a misch-metal permanent magnetic material based on sintering and multi-step diffusion is provided. A sintered substrate magnet is prepared by induction melting, strip casting, hydrogen decrepitation, jet milling, magnetic alignment, isostatic pressing and sintering. A first diffusion source and a second diffusion source are prepared, where the first diffusion source is a light rare-earth metal or its alloy, and the second diffusion source is a light-heavy rare-earth combination or its alloy. The sintered substrate magnet is sequentially subjected to a first vacuum diffusion with the first diffusion source and a second vacuum diffusion with the second diffusion source. The resultant product is subjected to low-temperature tempering to give the desired misch-metal permanent magnetic material.

Abstract: A computer implemented method includes accessing performance trace data for executed code of multiple services. Symbols corresponding to functions of the executed code are identified. First sequences of functions from the identified symbols are identified and a first performance threshold for each identified first sequence of functions is computed. The method includes receiving an incoming performance trace, detecting second sequences of functions from the incoming performance trace, identifying second sequences equivalent to the first sequences, and comparing performance of the identified second sequences to the first performance threshold for each of the equivalent first sequences to identify second sequences as comprising a performance bottleneck.