Abstract: The present invention provides a device and a method for measuring fluid saturation in nuclear magnetic resonance (NMR) on-line displacement, the method comprising: measuring a nuclear magnetic resonance (NMR) T2 spectrum under the dead volume filling of the on-line displacement system as displacing phase fluid and the core to be measured as saturated nuclear magnetic detection phase fluid to generate a calibrated T2 spectrum; measuring a nuclear magnetic resonance (NMR) T2 spectrum of a process in which the core to be measured is converted from a saturated displaced phase fluid into a displacing phase fluid to generate a displacement process T2 spectrum; generating the fluid saturation of the on-line displacement system in real time according to the generated calibrated T2 spectrum and the displacement process T2 spectrum. The present invention achieves the purpose of improving measurement precision of fluid saturation in the on-line displacement process.

Abstract: The present disclosure provides a chassis assembly and a vehicle. The chassis component includes: a chassis provided with a plurality of mounting positions and configured to install a battery module; a quick-release device through which the battery module is installed on the mounting positions, wherein the quick-release device is controlled by a control system; and a voltage electrical connecting assembly electrically connected to the battery module, wherein the voltage electrical connecting assembly is controlled by the control system. The vehicle includes the chassis assembly.

Abstract: The present invention discloses a method for constructing a surface stress distribution cloud map based on critical refraction longitudinal wave detection. The method comprises: firstly, meshing a surface of a detected article; secondly, The mean transverse stress on different grid lines and the mean longitudinal stress on different grid lines were obtained by the critical refraction longitudinal wave detection method; next, calculating the equivalent stress of each mesh node according to the mean transverse stress on different mesh transverse lines and the mean longitudinal stress on different mesh longitudinal lines on the surface of the detected article; and finally, drawing a stress distribution cloud map of the surface of the detected article according to the equivalent stress. The present invention can obtain the stress situations at different points on the surface of the detected article.

Abstract: Provided is a focusing assembly including a focusing barrel and a barrel retaining ring; the focusing barrel includes a first sleeve, a second sleeve, and a third sleeve that are sequentially sleeved from inside to outside of the focusing barrel; the first sleeve is provided with a lens mounting portion for mounting a focusing lens, a first end of the second sleeve is provided with a display screen mounting portion for mounting a display screen, a second end of the second sleeve is detachably connected to the barrel retaining ring, the first end and the second end being opposite ends of the second sleeve; and the lens mounting portion and the display screen mounting portion are configured such that the relative position thereof in a focusing direction of the focusing assembly is adjustable.

Abstract: A displaying device, a device and method for generating data, and a displaying system. The displaying device includes a displaying screen, a driving assembly, a rotating assembly and a controlling assembly; a rotation shaft of the displaying screen is parallel to a light-exiting face of a display panel; the displaying screen includes a display panel and an optical assembly; a light ray emitted by the display panel includes an emergent light located in a reference plane, and the reference plane is perpendicular to the light-exiting face of the display panel and the rotation shaft of the displaying screen; the optical assembly is configured for adjusting the emergent light located in the reference plane into a collimated light perpendicular to the light-exiting face of the display panel; the rotating assembly is configured for driving the driving assembly to rotate; and the controlling assembly is electrically connected to the displaying screen.

Abstract: A display device for presenting 3D images is disclosed. The display device includes: a display assembly; a hollow housing assembly; a motor connected to the display assembly; a driving assembly connected to the display assembly; and a hollow base assembly; wherein the driving assembly comprises a power transmission structure and a power reception structure, the power transmission structure is independent from the display assembly and wiredly connected to a first driving power supply, and the power reception structure is wiredly connected to the display assembly and capable of delivering power to the power reception structure by electromagnetic mutual inductance; and the base assembly comprises a first cylinder and a first plate fixedly connected to one end of the first cylinder; the first plate comprises a plate body and a cushion, and the cushion covers a side, proximal to the first cylinder, of the plate body.

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: Disclosed are a composition for use in photoelectronic component encapsulated, an encapsulation structure and a photoelectronic component. The composition includes 10%˜70% of a photocurable monomer; 10%˜70% of a monofunctional or trifunctional silicon-containing monomer; and 0.5%˜10% of an initiator. The use of the silicon-containing monomer, on the one hand, because of the strong distensibility of Si—O—Si chain segment of self, provides a stress dispersing effect upon impact, reduces internal stress, and increases the mechanical performance of the organic encapsulation composition; and on the other hand, effectively increases the thermal performance and hydrophobicity of the organic encapsulation composition. Film packaging for use in the photoelectronic component may effectively increase the service life of the component.

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: A rotary shaft mechanism of an electronic is provided. The rotary shaft mechanism includes a first rotating assembly and a second rotating assembly, wherein the first rotating assembly is provided with a first through hole, and the second rotating assembly is provided with a second through hole, wherein the first through hole is in communication with the second through hole, and an axis of the first through hole and an axis of the second through hole are both intersected with a rotary shaft between the first rotating assembly and the second rotating assembly. A flexible circuit board of the electronic device is disposed in the first through hole and the second through hole.

Abstract: A display device for presenting 3D images is disclosed. The display device includes: a display assembly; a hollow housing assembly, wherein the display assembly is disposed in the housing assembly; a motor connected to the display assembly and configured to drive the display assembly to rotate; and a driving assembly connected to the display assembly and configured to drive the display assembly to display images, wherein the driving assembly includes a wireless power transmission structure and a wireless power reception structure, wherein the wireless power transmission structure is independent from the display assembly and wiredly connected to a first driving power supply, and the wireless power reception structure is wiredly connected to the display assembly and capable of delivering power to the wireless power reception structure by electromagnetic mutual inductance.

Abstract: Methods, systems, and techniques for simulating an event. Simulated event data comprising a simulated event, and authentic raw data, are both obtained. The simulated event data and the authentic raw data are blended to form blended data that comprises the simulated event. The blended data may be fed into an event detection system, such as a pipeline leak detection system, for testing purposes.

Abstract: There is described a method of determining a position of a pipeline inspection gauge (PIG) in a fluid conduit. While the PIG is moving through the fluid conduit, one or more sensors positioned along the fluid conduit are used to detect one or more signals. Parameter data is extracted from the detected one or more signals. The parameter data includes one or more parameters of the detected one or more signals as a function of time and position along the fluid conduit. PIG movement data indicative of a position of the PIG in the fluid conduit as a function of time is generated using the parameter data.

Abstract: Methods and systems for provable, auditable and secure software updates for resource-constrained IoT devices are provided via a security framework and a protocol for owner-controlled software updates for IoT devices through blockchain.

Abstract: A data processing method includes: acquiring a first intersection set, acquiring a second intersection set, calculating an intersection between the first intersection set and the second intersection set to obtain an intersection result set that includes an intersecting portion of the first intersection data and the second intersection data, and obfuscating the intersection result set to obtain an obfuscation set that includes obfuscated data based on data in the second intersection set and an intersection data set based on the intersection result set.

Abstract: There is described a method of determining a position of a pipeline inspection gauge (PIG) in a fluid conduit. While the PIG is moving through the fluid conduit, one or more sensors positioned along the fluid conduit are used to detect one or more signals. Parameter data is extracted from the detected one or more signals. The parameter data includes one or more parameters of the detected one or more signals as a function of time and position along the fluid conduit. PIG movement data indicative of a position of the PIG in the fluid conduit as a function of time is generated using the parameter data.

Abstract: This application provides a federated-learning-based data processing method, apparatus, and device, and a computer-readable storage medium. The method includes obtaining data to be processed, the data to be processed comprising multiple object identifiers and a feature value corresponding to each object identifier; binning the data to be processed based on the feature value corresponding to each object identifier to obtain a number of bins; determining multiple target identifier sets from each bin, and transmitting each target identifier set to a label-party device; receiving each piece of set label distribution information corresponding to each target identifier set from the label-party device, and determining bin label distribution information corresponding to each bin based on each piece of set label distribution information; and merging bins based on a binning policy and each piece of bin label distribution information to obtain a final binning result.

Abstract: A model training method and apparatus for federated learning, a device and a storage medium are provided, which belong to the technical field of machining learning. The method includes: generating an ith scalar operator based on a (t-1)th round of training data and a tth round of training data (201); transmitting an ith fusion operator to a next node device based on the ith scalar operator (202); determining an ith second-order gradient descent direction of an ith sub-model based on an acquired second-order gradient scalar, an ith model parameter and an ithfirst-order gradient; and updating the ith sub-model based on the ith second-order gradient descent direction to obtain a model parameter of the ith sub-model during a (t+1)th round of iterative training.