Abstract: A method and device for dispatching service robots are disclosed. The method comprises: receiving a current task in real time, and acquiring effective robots matched with the current task in a working area according to a preset judging rule based on the current task; and selecting an optimum robot from the effective robots according to the current task and a preset dispatching rule, and sending the current task to the optimum robot, to execute a job corresponding to the current task; and adding the current task to a task set corresponding to the optimum robot. The present disclosure solves the problem of the conventional service robots of low work efficiency in use.

Abstract: The present application provides a method and device for obtaining a predicted image of a truncated portion, an imaging method and system, and a non-transitory computer-readable storage medium. The method for obtaining a predicted image of a truncated portion comprises preprocessing projection data to obtain, by reconstruction, an initial image of the truncated portion; and calibrating the initial image based on a trained learning network to obtain the predicted image of the truncated portion.

Abstract: Various methods and systems are provided for scanning an image subject along a scan axis. The method includes stitching sectional datasets acquired from different anatomical sections of the image subject based on locations of a landmark in the sectional datasets.

Abstract: A computer aided scanning method for a medical device is provided in the present invention, comprising step 1: recognizing and analyzing a pre-scan image through a pre-trained neural network to determine and identify a region of interest in the pre-scan image; and step 2: determining, according to feature information of the identified region of interest, scanning parameters for further scanning of the region of interest. A medical device employing the above method and a computer readable storage medium for performing the method are further provided in the present invention. The method, the medical device, and the readable storage medium provided by the present invention can automatically identify a region of interest, determine a corresponding auxiliary line and subsequent scanning parameters, and improve the scanning efficiency and accuracy of the medical device.

Abstract: Spike noise in a k-space dataset acquired in magnetic resonance imaging may be removed by generating a mask including a set of data points which constitute spike noise in the k-space dataset based on the acquired k-space dataset via a trained deep learning network, the mask corresponding to a location of the spike noise in the acquired k-space dataset. An image reconstructed based on the acquired k-space dataset and the mask may be displayed.

Abstract: Disclosed are an intelligent traditional Chinese medicine diagnosis method, system and traditional Chinese medicine system, the method comprising: a server side obtaining, from distributed client clusters, inspection training data, auscultation-olfaction diagnosis training data, interrogation training data and palpation training data of a patient; the server side training, by using the inspection training data, the auscultation-olfaction diagnosis training data, the interrogation training data and the palpation training data, a model to be trained established on the basis of a deep neural network algorithm to obtain a trained model; and the server side using the trained model to perform diagnosis with respect to disease data of the patient to obtain a diagnostic result of the disease data.

Abstract: Various methods and systems are provided for scanning an image subject along a scan axis. The method includes stitching sectional datasets acquired from different anatomical sections of the image subject based on locations of a landmark in the sectional datasets.

Abstract: The present invention provides a wavelength division multiplexing/demultiplexing optical transceiving assembly based on a diffraction grating, which is an uplink optical emitting unit and a downlink optical receiving unit that comprise a laser chip array, a light receiving detector array, a first fast axis collimating lens, a second fast axis collimating lens, a first slow axis collimating lens, a diffraction grating, a slow axis focusing lens, a second slow axis collimating lens, an optical isolator, a coupling output lens, a coupling input lens, a coupling outputting optical fiber and a coupling inputting optical fiber.

Abstract: A method and device for dispatching service robots are disclosed. The method comprises: receiving a current task in real time, and acquiring effective robots matched with the current task in a working area according to a preset judging rule based on the current task; and selecting an optimum robot from the effective robots according to the current task and a preset dispatching rule, and sending the current task to the optimum robot, to execute a job corresponding to the current task; and adding the current task to a task set corresponding to the optimum robot. The present disclosure solves the problem of the conventional service robots of low work efficiency in use.

Abstract: Embodiments of the present invention provide a medical imaging method, computer program and computer storage medium, the medical imaging method comprising: reconstructing collected raw image data to a first image having a first matrix size; transforming the first image to a second image having a second matrix size, the second matrix size being smaller than the first matrix size; and displaying the second image.

Abstract: A wavelength-tunable external cavity laser comprises a semiconductor optical amplifier chip and a laser external cavity, the laser external cavity comprising a grid filter, a phase adjustor and a silicon-based micro-ring chip, the grid filter and the silicon-based micro-ring chip constituting a wavelength-tunable optical filter which implements wavelength tuning by spectral tuning of the grid filter and/or the silicon-based micro-ring chip. A micro-ring filter in the silicon-based micro-ring chip of the tunable external-cavity laser is manufactured by adopting a mature silicon light technology, which can greatly reduce a manufacturing difficulty of the adjustable filter, and reduce the manufacturing cost of a device. An existing external-cavity adjustable technology platform may be used for smooth transition, so as to improve the degree of integration of this type of device and simplify a preparation process.

Abstract: The present invention provides a packaging structure of a laser and a grating coupler and its method, wherein: the packaging structure of a laser and a grating coupler comprises a laser unit, a collimating lens, an isolator and a reflecting prism that are provided on a silicon photonic chip; the silicon photonic chip comprises a first electrode, a first marker, a second marker, a grating coupler and a waveguide layer that are provided on a surface plane; the laser unit comprises a transition substrate and a laser; and the collimating lens comprises a first lens and a second lens, the first lens stands perpendicularly to the surface plane, and the second lens is provided on the surface plane by aligning with the second marker, so that the grating coupler is positioned in a central area of a principal axis of an optical path of the second lens, and the isolator is installed at a surface plane that is between the first lens and the second lens, so that a divergent light outputted by the laser is collimated by th

Abstract: The present invention provides a wavelength division multiplexing/demultiplexing optical transceiving assembly based on a diffraction grating, which is an uplink optical emitting unit and a downlink optical receiving unit that comprise a laser chip array, a light receiving detector array, a first fast axis collimating lens, a second fast axis collimating lens, a first slow axis collimating lens, a diffraction grating, a slow axis focusing lens, a second slow axis collimating lens, an optical isolator, a coupling output lens, a coupling input lens, a coupling outputting optical fiber and a coupling inputting optical fiber.

Abstract: A wavelength-tunable external cavity laser comprises a semiconductor optical amplifier chip and a laser external cavity, the laser external cavity comprising a grid filter, a phase adjustor and a silicon-based micro-ring chip, the grid filter and the silicon-based micro-ring chip constituting a wavelength-tunable optical filter which implements wavelength tuning by spectral tuning of the grid filter and/or the silicon-based micro-ring chip. A micro-ring filter in the silicon-based micro-ring chip of the tunable external-cavity laser is manufactured by adopting a mature silicon light technology, which can greatly reduce a manufacturing difficulty of the adjustable filter, and reduce the manufacturing cost of a device. An existing external-cavity adjustable technology platform may be used for smooth transition, so as to improve the degree of integration of this type of device and simplify a preparation process.

Abstract: Provided are a high-efficiency parallel-beam laser optical fiber drawing method and optical fiber, the method including the steps of: S1: providing base planes on the side surfaces of both a gain optical fiber preform and a pump optical fiber preform, inwardly processing the base plane of the gain optical fiber preform to make a plurality of ribs protrude, and inwardly providing a plurality of grooves on the base plane of the pump optical fiber preform; S2: embedding the ribs into the grooves, tapering and fixing one end of the combination of the ribs and the grooves to form a parallel-beam laser optical fiber preform; S3: drawing the parallel-beam laser optical fiber preform into parallel-beam laser optical fibers. The process has high repeatability, and the obtained parallel-beam laser achieves peelability of pump optical fibers in a set area, thus facilitating multi-point pump light injection of parallel-beam laser optical fibers.

Abstract: Provided are a high-efficiency parallel-beam laser optical fiber drawing method and optical fiber, the method including the steps of: S1: providing base planes on the side surfaces of both a gain optical fiber preform and a pump optical fiber preform, inwardly processing the base plane of the gain optical fiber preform to make a plurality of ribs protrude, and inwardly providing a plurality of grooves on the base plane of the pump optical fiber preform; S2: embedding the ribs into the grooves, tapering and fixing one end of the combination of the ribs and the grooves to form a parallel-beam laser optical fiber preform; S3: drawing the parallel-beam laser optical fiber preform into parallel-beam laser optical fibers. The process has high repeatability, and the obtained parallel-beam laser achieves peelability of pump optical fibers in a set area, thus facilitating multi-point pump light injection of parallel-beam laser optical fibers.

Abstract: A large mode field active optical fiber and manufacture method thereof is provided. The large mode field active optical fiber is formed by drawing a fiber core (1), a quartz glass internal cladding (2), a quartz glass outer cladding (3), and a coating (4). The quartz glass internal cladding (2), the quartz glass outer cladding (3), and the coating (4) are sequentially coated on the outer surface of the fiber core (1). The fiber core (1) is formed by depositing, melting, and shrinking the tetrachlorosilane doped with rare earth ions in a quartz glass tube. The refractive index of the fiber core (1) is a graded refractive index, and the section parameter a thereof is 1???3. The appearance of the quartz glass inner cladding (2) is regular multi-prism shaped.

Abstract: The present invention relates to a class of magenta dyes, their preparation methods and applications. The magenta dyes include the compounds which simultaneously contain carboxyl group, sulfonic acid group and the carbonyl propyl sulfurylsulfonic acid on the anthrapyridone skeleton, showing in the form of general formula (I) or their mixtures. In the general formula (I): A may be cation M4, or substituted or unsubstituted benzyl group, or substituted or unsubstituted naphthyl methyl; M1, M2, M3 are respectively cation or cationic groups; Sulfonic acid group (SO3M2)m may located any position of the benzene ring, of which m is an integer of 0-2. As containing carboxyl (or carboxylic benzyl ester or naphthoate), sulfonic acid groups and carbonyl propyl sulfuryl simultaneously, the magenta dyes of the present invention feature outstanding tone, brightness, light resistance, water resistance, ozone resistance as well as solubility and solution stability, etc.

Abstract: The present invention relates to a class of magenta dyes, their preparation methods and applications. The magenta dyes include the compounds which simultaneously contain carboxyl group, sulfonic acid group and the carbonyl propyl sulfurylsulfonic acid on the anthrapyridone skeleton, showing in the form of general formula (I) or their mixtures. In the general formula (I): A may be cation M4, or substituted or unsubstituted benzyl group, or substituted or unsubstituted naphthyl methyl; M1, M2, M3 are respectively cation or cationic groups; Sulfonic acid group (SO3M2)m may located any position of the benzene ring, of which m is an integer of 0-2. As containing carboxyl (or carboxylic benzyl ester or naphthoate), sulfonic acid groups and carbonyl propyl sulfuryl simultaneously, the magenta dyes of the present invention feature outstanding tone, brightness, light resistance, water resistance, ozone resistance as well as solubility and solution stability, etc.

Abstract: A large mode field active optical fiber and manufacture method thereof is provided. The large mode field active optical fiber is formed by drawing a fiber core (1), a quartz glass internal cladding (2), a quartz glass outer cladding (3), and a coating (4). The quartz glass internal cladding (2), the quartz glass outer cladding (3), and the coating (4) are sequentially coated on the outer surface of the fiber core (1). The fiber core (1) is formed by depositing, melting, and shrinking the tetrachlorosilane doped with rare earth ions in a quartz glass tube. The refractive index of the fiber core (1) is a graded refractive index, and the section parameter a thereof is 1???3. The appearance of the quartz glass inner cladding (2) is regular multi-prism shaped.