Abstract: Disclosed are a background image generation method and apparatus, an electronic device and a storage medium. The background image generation method comprises: displaying a background image preview effect of a preset page, wherein the background image preview effect is displayed on a first terminal, and the background image preview effect is a preview effect of displaying a background image on a second terminal; receiving a background image generation operation; and in response to the background image generation operation, generating a background image if the preset page is displayed on the second terminal.

Abstract: A transducer, a transduction apparatus, and a terminal are provided, and belong to the field of device technologies. The transducer includes a substrate layer, a first electrode layer, a piezoelectric layer, a second electrode layer, a first protective layer, and a second protective layer that are sequentially arranged. A sum of target parameters of the piezoelectric layer, the second electrode layer, the first protective layer, and the second protective layer is a positive integer multiple of n, where 0.1?n?0.4. A target parameter of at least one of the film layers in the transducer is a ratio of a thickness of the at least one film layer to a wavelength of a sound wave at an operating frequency of the transducer when the sound wave is transmitted at the at least one film layer.

Abstract: Embodiments of this application provide an ultrasonic sensor and an operating method thereof, and an electronic device, and relate to the field of sensing detection technologies, to improve performance of the ultrasonic sensor. The ultrasonic sensor includes a substrate, and a circuit layer, a first electrode layer, a first piezoelectric layer, an intermediate electrode layer, a second piezoelectric layer, and a second electrode layer that are sequentially disposed on a same side of the substrate. The circuit layer includes a plurality of pixel circuits spaced from each other, the first electrode layer includes a plurality of electrode blocks spaced from each other, and the plurality of pixel circuits are correspondingly coupled to the plurality of electrode blocks. Polarization directions of the first piezoelectric layer and the second piezoelectric layer are the same.

Abstract: Embodiments of this application provide a fingerprint recognition module, a display apparatus, and an electronic device, including: a substrate, a first ultrasonic transmit signal input port and a second ultrasonic transmit signal input port that are both disposed on the substrate, and a circuit layer, a first electrode layer, a first piezoelectric layer, a second electrode layer, a second piezoelectric layer, and a third electrode layer that are sequentially disposed on a same side of the substrate. The circuit layer includes a plurality of circuit units, the first electrode layer includes a plurality of electrode blocks spaced from each other, and the plurality of circuit units are correspondingly coupled to the plurality of electrode blocks.

Abstract: An example of communicating transaction data between a first service and a second service includes receiving transactions of first service, and processing the received transactions and storing the results in a database of the first service. For at least some of the received transactions, corresponding transaction messages are produced for processing by the second service, and tracking that each of the transaction messages is provided to a message queue. The transaction messages are received from the message queue and are processed using the second service, and the results are stored in a database of the second service. When there are duplicate transaction messages received from the message queue, the database of the second service only stores the results of one of the duplicate transaction messages.

Abstract: Disclosed are a background image generation method and apparatus, an electronic device and a storage medium. The background image generation method comprises: displaying a background image preview effect of a preset page, wherein the background image preview effect is displayed on a first terminal, and the background image preview effect is a preview effect of displaying a background image on a second terminal; receiving a background image generation operation; and in response to the background image generation operation, generating a background image if the preset page is displayed on the second terminal.

Abstract: Methods, systems, and storage media for assigning multiple identifiers to user accounts are disclosed. Exemplary implementations may: receive an indication of an event; associate the event with a user; associate the user with at least a first account identifier of a plurality of accounts of the user; associate the user with at least a second account identifier of the plurality of accounts of the user, the second account identifier different than the first account identifier; add at least one of the first account identifier or the second account identifier to a custom audience relating to the event; target the custom audience through directed advertising; and deliver advertisements to the custom audience.

Abstract: An example of communicating transaction data between a first service and a second service includes receiving transactions of first service, and processing the received transactions and storing the results in a database of the first service. For at least some of the received transactions, corresponding transaction messages are produced for processing by the second service, and tracking that each of the transaction messages is provided to a message queue. The transaction messages are received from the message queue and are processed using the second service, and the results are stored in a database of the second service. When there are duplicate transaction messages received from the message queue, the database of the second service only stores the results of one of the duplicate transaction messages.

Abstract: The present invention provides a process for preparing a cellulose solution. NMMO with a relatively low concentration and non-activated pulp are continuously mixed online, the mixed premix is dewatered in evaporation dewatering equipment until an NMMO concentration suitable for swelling is achieved, then, sufficient swelling is carried out under this condition, and the uniformly-mixed and sufficiently swelled pre-swelling solution is subjected to depressurized evaporation dewatering and dissolving by thin-film-evaporation equipment thereby obtaining a high-concentration, uniformly-dissolved and excellently-uniformity cellulose solution. The present invention further provides continuous preparation equipment for the process for preparing a cellulose solution.

Abstract: A method and system for autoregressive model based pigtail catheter motion prediction in a fluoroscopic image sequence is disclosed. Parameters of an autoregressive model are estimated based on observed pigtail catheter tip positions in a plurality of previous frames of a fluoroscopic image sequence. A pigtail catheter tip position in a current frame of the fluoroscopic image sequence is predicted using the fitted autoregressive model. The predicted pigtail catheter tip position can be used to constrain pigtail catheter tip detection in the current frame. The predicted pigtail catheter tip position may also be used to predict abnormal motion in the fluoroscopic image sequence.

Abstract: The present invention provides a process for preparing a cellulose solution. NMMO with a relatively low concentration and non-activated pulp are continuously mixed online, the mixed premix is dewatered in evaporation dewatering equipment until an NMMO concentration suitable for swelling is achieved, then, sufficient swelling is carried out under this condition, and the uniformly-mixed and sufficiently swelled pre-swelling solution is subjected to depressurized evaporation dewatering and dissolving by thin-film-evaporation equipment thereby obtaining a high-concentration, uniformly-dissolved and excellently-uniformity cellulose solution. The present invention further provides continuous preparation equipment for the process for preparing a cellulose solution.

Abstract: A method and system for extracting a silhouette of a 3D mesh representing an anatomical structure is disclosed. The 3D mesh is projected to two dimensions. Silhouette candidate edges are generated in the projected mesh by pruning edges and mesh points based on topology analysis of the projected mesh. Each silhouette candidate edge that intersects with another edge in the projected mesh is split into two silhouette candidate edges. The silhouette is extracted using an edge following process on the silhouette candidate edges.

Abstract: This invention is directed to a novel inhibitor on collagen degradation caused by the activity of a human cathepsin K rising. In particular, the inhibitor is myricetin or derivatives thereof. The invention also relates to use of the novel inhibitor to manufacture a medicament in a form of pharmaceuticals, foods, nutraceuticals or cosmetics for the prevention, amelioration and/or treatment of pathological symptoms or diseases associated with collagen degradation. Alternatively, the present invention is further directed to addition of the novel inhibitor to a medicament, food, nutraceutical or cosmetics used for the treatment, amelioration and/or prevention of the disease or pathological symptoms associated with collagen degradation by the increased human cathepsin K actively. The invention also provide the methods for treating, ameliorating and/or preventing the symptoms or diseases, comprising administering an effective amount of the medicament to a subject in need thereof.

Abstract: A method and system for autoregressive model based pigtail catheter motion prediction in a fluoroscopic image sequence is disclosed. Parameters of an autoregressive model are estimated based on observed pigtail catheter tip positions in a plurality of previous frames of a fluoroscopic image sequence. A pigtail catheter tip position in a current frame of the fluoroscopic image sequence is predicted using the fitted autoregressive model. The predicted pigtail catheter tip position can be used to constrain pigtail catheter tip detection in the current frame. The predicted pigtail catheter tip position may also be used to predict abnormal motion in the fluoroscopic image sequence.

Abstract: A method and system for extracting a silhouette of a 3D mesh representing an anatomical structure is disclosed. The 3D mesh is projected to two dimensions. Silhouette candidate edges are generated in the projected mesh by pruning edges and mesh points based on topology analysis of the projected mesh. Each silhouette candidate edge that intersects with another edge in the projected mesh is split into two silhouette candidate edges. The silhouette is extracted using an edge following process on the silhouette candidate edges.