Abstract: Embodiments of the present disclosure provide for contrast agents, methods of making contrast agents, and methods of using contrast agents, and the like.

Abstract: The present invention relates to a microplastic detection device and method based on a pyrolysis-mass spectrometry technology. The microplastic detection device based on a pyrolysis-mass spectrometry technology provided by the present invention is substantially a sealed gas path device system formed connected via pipelines. The device includes a working gas source, a pyrolysis device, a filter and a mass spectrometer which are connected in sequence. After a microplastic sample is placed into the pyrolysis device, the microplastic sample is decomposed in the pyrolysis device, and pyrolysis products from the microplastic sample driven by a carrier gas of the working gas source enter the mass spectrometer for detection and analysis after being filtered by the filter. Furthermore, the present invention provides a microplastic detection method based on a pyrolysis-mass spectrometry. The present invention is widely applied to the field of a microplastic detection technology.

Abstract: A self-adaptive data filter is developed to process data having tree-structured formats, such as, JSON, XML, and YML. Unlike conventional data filtering methods, which require different filters for different data structures, in one aspect, the disclosed self-adaptive data filter is data structure agnostic and can be used to process a wide variety of data structures. In another aspect, the self-adaptive data filter of this disclosure allows for fuzzy search.

Abstract: According to an exemplary embodiment of the present invention, a method is provided. The method includes identifying UI controls in a GUI for display on a screen of a computing device. The method further includes determining a position relationship of the UI controls. The method further includes mapping the UI controls to keyboard areas such that a position relationship of the keyboard areas corresponds with the position relationship of the UI controls. One or more keys within the individual areas are associated with the UI controls that are mapped to the respective keyboard areas.

Abstract: Disclosed is an antibody capable of binding to the interleukin 4 (IL-4) receptor (IL-4). Also disclosed are a nucleic acid sequence encoding the antibody, a vector including the nucleic acid sequence, and a host cell transformed or transfected with the vector. Provided are a method for producing the antibody, a medical use of the antibody, and a kit including the antibody.

Abstract: A computer-implemented method, a computer system and a computer program product generate user interface (UI) help content. The method includes generating a descriptor file for a UI based on at least one of a design prototype and front-end code of the UI. The descriptor file describes a group of attributes related to help content for at least one UI element of the UI and includes attribute-value pairs for the at least one UI element of the UI. The method also includes transforming the descriptor file into a help content document for the UI using a trained natural language generation (NLG) model.

Abstract: A method and system for preparing epoxypropane by direct epoxidation of propylene includes the steps of subjecting a mixed gas of a first feed gas and a second feed gas to a contact reaction with a catalyst under reaction conditions of propylene epoxidation to prepare epoxypropane. The first feed gas contains oxygen gas and is free or substantially free of hydrogen gas. The second feed gas contains hydrogen gas and is free or substantially free of oxygen gas. The first feed gas and/or the second feed gas contain propylene, at least one of the first feed gas and the second feed gas further contains a diluent gas. The method can be used for reducing dosage of diluent gas, preferably recycling the tail gas, thereby significantly increasing the conversion rate of propylene without compromising the service life of catalyst.

Abstract: A method for federated data query includes: using, by a first electronic device, a joint query statement corresponding to a federated data query to obtain at least one operator containing a joint query operator; transforming the joint query operator to a first joint security operator; determining first data for intersection on the first electronic device by executing the first joint security operator, receiving second data for intersection from a second electronic device involved in the federated data query, and performing joint computing on the first data for intersection and the second data for intersection in a form of a ciphertext to obtain a joint data table; and determining a federated data query result corresponding to the at least one operator based on the joint data table.

Abstract: A federated learning method includes: determining at least one candidate feature from data features corresponding to a training data-set, the candidate feature corresponding to at least two decision trends in a decision tree model; obtaining n first decision tree models by taking the at least one candidate feature as a model construction foundation, value of n corresponding to number of the at least one candidate feature; determining at least one second decision tree model from the n first decision tree models based on prediction results of the n first decision tree models on training data in the training data-set; and transmitting the second decision tree model to a second computing device, the second computing device being configured to fuse at least two decision tree models that comprise the second decision tree model to obtain a federated learning model.

Abstract: Method for determining an extremum based on secure multi-party computation includes: acquiring a tth mean obtained in tth round federated computation; performing (t+1)th round federated computation based on valid node data of an ith node device in response to the valid node data of the ith node device being greater than the tth mean; performing the (t+1)th round federated computation based on invalid node data in response to the valid node data of the ith node device being less than or equal to the tth mean; and determining that the valid node data of the ith node device is the extremum in response to the valid node data of the ith node device being greater than or equal to an (n?1)th mean after (n?1)th round federated computation.

Abstract: Embodiments of the present disclosure provide for contrast agents, methods of making contrast agents, and methods of using contrast agents, and the like.

Abstract: Disclosed is a method for joint estimation of stellar atmospheric refraction and star tracker attitude, including: capturing, by a star tracker, an image of stars, and recognizing the image to obtain a matching relationship between an observed star and a reference star; transforming the reference star to a terrestrial reference frame based on time and position of observation to obtain a true zenith distance of the reference star; calculating an estimated stellar atmospheric refraction based on a simplified atmospheric refraction model, the true zenith distance, and an initial atmospheric refractive coefficient, and subjecting the reference star to stellar atmospheric refraction compensation; calculating the star tracker attitude, and re-projecting the observed star to the terrestrial reference frame to calculate the observed stellar atmospheric refraction and the stellar atmospheric refraction error; if the observed stellar atmospheric refraction is misaligned with the estimated stellar atmospheric refraction

Abstract: The disclosure relates to a method and a system for hand pose recognition, a device and a storage medium are disclosed in embodiments of the disclosure. The method includes: capturing a RGB image of a hand from a RGB camera and capturing a depth image of the hand from an active depth camera, so as to obtain a hand pose data set according to the RGB image and the depth image; processing the hand pose data set to obtain a 3D joint position, and taking the 3D joint position as a data set for training a software model; extracting the RGB image by a feature extractor based on a depth neural network to obtain a feature map of a hand pose; and processing the feature map according to an attention mechanism to obtain a global feature map of the hand pose.

Abstract: Provided are a control method, apparatus and device for an automatic train operation system. The method includes: acquiring multiple preset traction distribution strategies; determining, for each traction distribution strategy, a performance index of the traction distribution strategy; determining an optimal traction distribution strategy based on performance indexes of the multiple traction distribution strategies; and controlling the automatic train operation system based on the optimal traction distribution strategy.

Abstract: Disclosed is a human IL-4R antibody or an antigen binding fragment thereof. The antibody or the antigen binding fragment thereof specifically binds with human IL-4R? and binds with a specific epitope in human IL-4R?. Moreover, also provided in the present disclosure are uses of the epitope in screening a human IL-4R binding agent or blocking agent for a human IL-4/IL-13 signal transduction pathway or uses in assessing the efficacy of the binding agent or blocking agent by using the specific epitope.

Abstract: A catalyst for catalytic oxidation-deoxidation method of unsaturated hydrocarbon-containing gas has a carrier, an active component, a first co-agent component, and a second co-agent component loaded on the carrier respectively. The active component is one or more selected from the group consisting of oxides of Pt, Pd, Ru, Rh, Ag and Ir. The first co-agent component has one or more selected from the group consisting of a rare earth metal element, a group IVB metal element and a group VIII metal element; and the second co-agent component has one or more alkali metal element and alkaline earth metal element. The deoxidation method using the catalyst eliminates the need to add a reducing gas such as H2, allows hydrocarbons to react directly with oxygen to produce CO2 and H2O, achieves the goal of deoxidating a hydrocarbon-containing tail gas, and can prevent the generation of carbon deposits.

Abstract: A stellar atmospheric refraction measurement correction method based on collinearity of refraction surfaces, comprising: performing star identification on the basis of observed star vectors in a star sensor and the reference star catalog, to obtain matching relationships between observed stars and reference stars; converting reference star vectors corresponding to the observed stars to a geographic coordinate system before entering the atmosphere to obtain zenith distances and azimuth angles of incident stellar; on the basis of a principle of collinearity of refraction surfaces, performing optimal solving according to imaging coordinates of observation stars, to obtain the optimal position coordinates of the zenith direction on an imaging surface of the star sensor; according to the optimal zenith direction, performing atmospheric refraction correction on all the recognized observed stars by means of the trigonometric cosine formula to obtain corrected star coordinates; and performing optimal solving to obtai

Abstract: This application discloses a text mining method based on artificial intelligence performed by a computer device. This application includes: obtaining domain candidate term features corresponding to domain candidate terms; obtaining term quality scores corresponding to the domain candidate terms according to the domain candidate term features; determining a new term from the domain candidate terms according to the term quality scores corresponding to the domain candidate terms; obtaining an associated text according to the new term; and determining a domain seed term as a domain new term in response to determining according to the associated text that the domain seed term satisfies a domain new term mining condition. By this application, new terms can be automatically selected from domain candidate terms based on a machine learning algorithm, thereby reducing manpower costs and well adapting to the rapid emergence of special new terms in the Internet era.

Abstract: The disclosure relates to a method and a system for hand pose recognition, a device and a storage medium are disclosed in embodiments of the disclosure. The method includes: capturing a RGB image of a hand from a RGB camera and capturing a depth image of the hand from an active depth camera, so as to obtain a hand pose data set according to the RGB image and the depth image; processing the hand pose data set to obtain a 3D joint position, and taking the 3D joint position as a data set for training a software model; extracting the RGB image by a feature extractor based on a depth neural network to obtain a feature map of a hand pose; and processing the feature map according to an attention mechanism to obtain a global feature map of the hand pose.

Abstract: A gas sensor has a sensing structure that is used for generating, for a variety of gases, multiple corresponding electric signals. It has a plurality of measuring electrodes and a gas-sensitive film coating the measuring electrodes; and a micro-heating structure that is used for providing different heating temperatures for the sensing structure, and a silicon-based substrate and a heating layer disposed on the silicon-based substrate. The heating layer integrates heating electrodes of different sizes or different layouts to form a plurality of heating regions of different temperatures, and the plurality of measuring electrodes are respectively disposed in the corresponding heating regions. By integrating heating electrodes of different sizes or different layouts on a single micro-heating structure to form heating regions of different temperatures, a complex atmosphere detection function of a variety of sensing materials at different temperatures is achieved.