Abstract: Apparatuses and methods for customized retainers to prevent relapse. In particular, described herein are customized retainers, and methods and apparatuses for making customized retainers that specifically reenforce and prevent movement of one or more teeth having a higher likelihood of relapse following completion of an orthodontic treatment plan.

Abstract: An ultrasound diagnosis apparatus according to an embodiment includes processing circuitry. This processing circuitry collects a first ultrasound signal including one or more harmonic components. By executing weighed addition processing where a coefficient distribution is applied to the first ultrasound signal for different directions of two or more dimensions, the processing circuitry generates a second ultrasound signal including components of each order at a ratio different, at a specific frequency, from a ratio among the frequency components included in the first ultrasound signal.

Abstract: A bottle solenoid valve is provided. The bottle solenoid valve includes a bottle body including a bottle cavity, a first end and a second end, the first end and the second end are provided with a first opening and a second opening that are in communication with the bottle cavity, respectively; a valve body assembly, one end of which is mounted at the first end; a valve core assembly configured for opening/closing a valve port; and a bottle cap including a covering portion covering the second opening and a wrapping portion detachably connected to the second end, the wrapping portion being surrounded around the circumference of the second end, wherein a ventilation channel, one end of which is in communication with the bottle cavity and the other end faces the valve body assembly and is in communication with atmosphere, is formed on the inner surface of the wrapping portion.

Abstract: Provided in the present invention are benzopyrone compounds represented by formula (I) or pharmaceutically acceptable salts thereof, a preparation method therefor and the use thereof. The compounds have good inhibitory effect on POLRMT, and thus can be used for treating and/or preventing POLRMT-mediated diseases such as cancers.

Abstract: Aspects concern a server comprising: a memory configured to store a behaviour profile of a user for at least one of a plurality of types of on-demand services; and a processor configured to assign a user risk score to an account of the user, detect an occurrence of an event linked to the account of the user for any one of the plurality of types of on-demand services, adjust the user risk score assigned to the account of the user by adding or subtracting a predetermined score based on the event, and evaluate a risk for the account of the user for the plurality of types of on-demand services based on the adjusted user risk score, wherein the processor is configured to vary the predetermined score to be added or subtracted based on the event, based on a behaviour profile of the user.

Abstract: A method and system enable to-be-processed medical image data and its corresponding noise characteristic information to be normalized to resemble noise characteristic information of training data used to train at least one neural network for at least one ultrasound data acquisition mode. After normalizing, this processed medical image data is input into the trained neural network for producing output data used for generating cleaner images. Noise characteristic information can be used directly in training a neural network, generating a trained neural network that can handle medical image data with various noise characteristics.

Abstract: A method for motion estimation in CT systems is provided. The method includes dividing projection data, obtained by scanning a heart using the CT system, into a plurality of partial-angle-reconstruction (PAR) bins, reconstructing a plurality of PAR volumes from the PAR-binned projection data, obtaining, based on the plurality of reconstructed PAR volumes, a number of short-scan volumes, determining, based on the obtained number of short-scan volumes, a plurality of nodes throughout the heart, estimating, for each of the determined plurality of nodes, a plurality of model parameters of a motion model, and generating, based on the plurality of model parameters estimated for each of the plurality of nodes, parameters of a global motion model at each voxel of a volume of the heart. The method also includes reconstructing, based on the generated motion parameters of the global motion model at each voxel of the volume of the heart, a motion-compensated short-scan volume.

Abstract: A microscope objective lens turret and a microscope are provided. The microscope objective lens turret includes a pedestal, a rotary sleeve rotatably connected to the pedestal, a turntable fixed to the rotary sleeve, and a support member connected to the pedestal and the turntable. The support member includes a first inner ring fixed to the pedestal, a first outer ring fixed to the turntable and defining a first raceway with the first inner ring, and a plurality of first balls received in the first raceway. The support member of the disclosure is a four-point contact bearing, has higher precision and rigidity, can make the precision of the microscope objective lens turret higher, and improve the finished product performance of the microscope objective lens turret.

Abstract: Embodiments of the present disclosure relate to a document sharing method and apparatus, a device, and a medium. The method is applied to a first client and includes: receiving a follow trigger operation for a target document, where the target document is synchronously displayed on the first client and a second client; determining a second trigger position of the follow trigger operation relative to the target document based on a first trigger position of the follow trigger operation relative to a first screen and a first document position of the target document on the first screen; and sending the second trigger position to the second client, such that the second client displays, on a second screen based on a second document position of the target document on the second screen and access address information of the target document, content in the target document that corresponds to the second trigger position.

Abstract: A storage node configuration method includes obtaining service requirement information, where the service requirement information includes a burst access moment, a burst access bandwidth, or burst access duration of a computing node for a storage node; determining target configuration information based on the service requirement information, where the target configuration information is used to configure a peak bandwidth and peak bandwidth duration that are of the storage node; and sending the target configuration information to the storage node.

Abstract: An apparatus for training a model to perform harmonic imaging using ultrasound signals, the apparatus including processing circuitry configured to input first ultrasound data into a neural network model configured to generate and output second ultrasound data, determine a first error by applying a first filter to a difference between the second ultrasound data and target ultrasound data, determine a second error by applying a second filter, different from the first filter, to the difference between the second ultrasound data and the target ultrasound data, determine a loss value based on the determined first error and the determined second error, and update parameters of the neural network model based on the determined loss value to generate a trained neural network model.

Abstract: The present application discloses a task scheduling method based on an improved chimpanzee optimization algorithm, including obtaining a task to be scheduled and a task scheduling model pre-established by using a chimpanzee optimization algorithm, performing iterative computation of chimpanzees in the task scheduling model by the chimpanzee optimization algorithm; and ending the iterative computation in response to that an iteration termination condition is reached, outputting an optimal solution, and obtaining an optimal scheduling scheme. The present application solves the problem of the traditional chimpanzee optimization algorithm in the prior art that is prone to falling into the local optimum, and the imbalance between the global exploration capacity and the local exploitation capacity, the improved chimpanzee optimization algorithm has different aspects of performance enhancement compared to general intelligence algorithms of population.

Abstract: A comparator based on a pre-amplifier stage structure and an analog-to-digital converter are provided. The comparator includes: a first pre-amplifier stage, where an input terminal of the first pre-amplifier stage is connected to a differential input signal, to amplify and output the differential input signal so as to output a first differential output signal; a second pre-amplifier stage, where an input terminal of the second pre-amplifier stage is connected to the first differential output signal, to amplify and output the first differential output signal so as to output a second differential output signal, and a positive feedback unit is disposed between an output terminal of the second pre-amplifier stage and the input terminal of the second pre-amplifier stage, to increase a voltage gain of the second pre-amplifier stage by using the positive feedback unit; and a latch, an input terminal thereof connected to the second differential output signal.

Abstract: Reference voltage circuits and methods for designing the same are provided. The reference voltage circuit includes: a reference core unit configured to output a reference voltage; a main amplification unit connected to the reference core unit and configured to form feedback to the reference core unit; and a feedforward amplification unit connected to the main amplification unit and configured to form feedforward to the main amplification unit. The reference core unit, the main amplification unit, and the feedforward amplification unit form a third-order negative feedback loop to improve a power supply rejection ratio of the reference voltage.

Abstract: An adaptive current generation circuit includes an inverter drive chain, a frequency divider, a frequency detector, a low-pass filter, a static comparator group, and a controllable current mirror. An input analog signal of the input buffer is converted into a frequency discrimination voltage in a direct current form sequentially through conversion of the inverter drive chain, frequency division of the frequency divider, frequency detection of the frequency detector, and conversion of the low-pass filter. Then the static comparator group performs a plurality of times of comparison to obtain N bits of digital codes. Finally, the controllable current mirror is controlled by using the N bits of digital codes. The controllable current mirror provides a magnitude-adjustable input current for the input buffer under control of the N bits of digital codes. A magnitude of the input current is positively correlated with a frequency of the input analog signal.

Abstract: The embodiments of the present invention provide an information processing method and apparatus, and an electronic device, the method comprising: receiving screen sharing request information; determining, by the screen sharing request information, whether an online content that meets a preset condition exists in a currently displayed content in a screen; providing, in response to determining that the online content exists in the currently displayed content and that the online content is a currently shared content, a sharee with access information for accessing the online content based on an access authority of the sharee.

Abstract: A comparator circuit includes: a first pre-amplification stage, which amplifies an input signal in the comparison state to generate a first output signal; a second pre-amplification stage, which switches between a reset state and a comparison state according to the first output signal, amplifies the first output signal in the comparison state to generate a second output signal, and provides positive feedback for the second output signal through a first positive feedback structure; and a latch stage, which, in the reset state, resets an output terminal of the latch stage to a second preset level according to the clock signal, and in the comparison state, controls a second positive feedback structure and a third positive feedback structure to be enabled through the second output signal and the clock signal to provide positive feedback to the output terminal.

Abstract: An apparatus is provided with processing circuitry that receives a phase image acquired at a corresponding cardiac phase, determines, from the received phase image, a mask image of a particular cardiac region, applies both the determined mask image and the phase image to inputs of a trained neural network model to obtain, from outputs of the neural network model, a location probability map. The neural network model is trained with a set of input data and a corresponding set of output data. The input data includes a training mask image and a training phase image, and the output data includes a training location probability map. The processing circuitry calculates, for the cardiac phase, from the determined location probability map output from the trained neural network model, a value of a cardiac motion metric. The determined location probability map specifies a probable location of a cardiac vessel.

Abstract: A microscope objective lens switching device is provided for switching objective lenses of a microscope. The microscope objective lens switching device is used to switch the objective lenses of the microscope. In the microscope objective lens switching device of the present disclosure, by using the balls to support rotation in the outer ring of the switching device and using the roller bearing assembly to support rotation in the inner ring of the switching device, the accuracy and rigidity of the roller bearing assembly are higher, the accuracy of the microscope objective lens switching device is also higher, the processing requirements for processing members of the microscope objective lens switching device are lower, and the cost is lower.

Abstract: A computing device includes a central processing unit, at least one heterogeneous device, and a shared memory pool. The central processing unit is configured to: divide the shared memory pool into a plurality of memory spaces, store, in a first memory space in the plurality of memory spaces, first to-be-processed data that is provided by a client and that is associated with a service, and notify a first heterogeneous device of an address of the first to-be-processed data in the first memory space and a first operation that needs to be performed by the first heterogeneous device. The first heterogeneous device performs the first operation on the first to-be-processed data, and stores obtained first data in a second memory space.