Abstract: Methods and apparatuses of boundary refinement for instance segmentation. The methods for instance segmentation include receiving an image and an instance mask identifying an instance in the image; extracting a set of image patches from the image based on a boundary of the instance mask; generating a refined mask patch for each of the set of image patches based on at least a part of the instance mask corresponding to the each of the set of image patches; and refining the boundary of the instance mask based on the refined mask patch for each of the set of image patches.

Abstract: The present invention relates to a vibration apparatus, comprising a masturbation cup, comprising a motor, a speed reduction mechanism and rotating body. The output of the motor, after being decelerated by the speed reduction mechanism drive the rotating body to rotate. The rotating body is an eccentric structure, internally provided with a cavity. The motor and the speed reduction mechanism are both arranged in the internal cavity of the rotating body. The present invention also relates to a masturbation cup and vibration rod vibration apparatus, by means of a built-in high-speed rotating ball, centrifugal forces in different directions are generated by means of high-speed rotation of the eccentric ball, such that a cup body of the masturbation cup is driven to move in various directions so that requirements of vibration strength and vibration amplitude can be met, and requirements of high telescopic frequency and strength can also be met.

Abstract: The present disclosure relates to an EP300/CBP modulator represented by formula I, a preparation method therefor and use thereof.

Abstract: An earphone ear-hook structure capable of bidirectionally rotating includes an earphone housing and an ear hook. The earphone housing and the ear hook are rotatably connected through a rotatable damping structure. The rotatable damping structure is configured to adjust a range of an included angle between the earphone housing and the ear hook. The ear hook is hung at ear backs of ears, the range of the included angle between the ear hook and the earphone housing is adjusted by adjusting and rotating the ear hook, and a degree of opening of the included angle is controlled through turning and reversing. A large degree of opening is suitable for people with large ears, while a small degree of opening is suitable for people with small ears, and the earphone ear-hook structure matches with different ear shapes and ear sizes, which is comfortable and stable to wear.

Abstract: Provided is an aldehyde binder, specifically, disclosed is a compound as represented by formula (II) or a pharmaceutically acceptable salt.

Abstract: The present disclosure discloses a device for cutting connection of multi-piece module electrode which includes a stand, the stand is provided with a workbench and the workbench is connected with a height adjusting device. The device further includes an angle grinding device, the angle grinding device includes a polishing shaft and an angle grinder, the angle grinder is arranged on the polishing shaft, and the angle grinding device is provided with a saw blade. According to the characteristics of the module electrode, the angle grinding device is matched with the workbench to implement simultaneous electrode disconnecting operation of multiple electrodes of the module, so that the device not only has higher efficiency and better cutting effect, but also is suitable for universal saw blades, saves the cost, and is safer.

Abstract: The present invention provides a speed measurement method and apparatus using a plurality of cameras. The speed measurement method includes: S1: calibrating positions of the respective cameras in a camera group, which are on a mobile platform at fixed relative positions; S2: obtaining a sequence of synchronized images from the respective cameras in the camera group, and recording time stamps thereof; and S3: performing a registration on the images captured by the respective cameras in the camera group and, if a registration result of two of the images is greater than a first threshold, calculating a position transformation matrix for the two images, and then calculating a position transformation matrix for the mobile platform based on the positional relationships between the cameras that captured the two images, and finally calculating a speed information of the mobile platform based on the position transformation matrix and an interval between times when the two images were captured.

Abstract: An interaction method, an interaction apparatus, and an electronic device are provided. The method includes: determining, in response to detecting a predefined size transformation operation, target transformation information of a target video based on whether a current size of the target video is a preset anchor point size, where the target video is a video played in a video play area; and transforming the target video based on the target transformation information, and playing the transformed target video.

Abstract: The present invention relates to application of gossypol and its optical isomers to preparation of an anti-Coronavirus drug. Specifically disclosed is application of pharmaceutically acceptable salts, solvates, isotopes, stereoisomers, stereoisomer mixtures, and tautomers of the gossypol and its optical isomers to preparation of a drug for preventing and/or treating a disease caused by a Coronavirus. The Coronavirus is MERS-CoV, SARS-CoV, or SARS-CoV-2. It is found in the present invention for the first time that the gossypol and its optical isomers can inhibit the activity of Coronavirus 3CL proteases to achieve an anti-Coronavirus effect. The half maximal inhibitory concentrations of gossypol and (?)-gossypol to SARS-CoV proteases and SARS-CoV-2 3CL proteases are all lower than 10 ?M. The anti-Coronavirus 3CL protease effect is good. Therefore, the gossypol and its optical isomers have the potential for use in the preparation of a drug for preventing and/or treating novel Coronavirus infections.

Abstract: The present disclosure provides a preparation method of an MOFs-coated cardiomyocyte core-shell structure, and relates to a method for coating cardiomyocytes. The present disclosure aims to solve problems that bio-hybrid microrobots in the prior art lack physical protection and nutrient supply channels and have short life cycles. The method includes the steps of: 1) cleaning; 2) adding trypsin in PBS; 3) digesting; 4) centrifuging; 5) culturing; 6) passaging; 7) preparing a Zn(NO3)2·6H2O aqueous solution and a 2-methylimidazole aqueous solution; and 8) adding the Zn(NO3)2·6H2O aqueous solution and the 2-methylimidazole aqueous solution for culture to obtain the MOFs-coated cardiomyocyte core-shell structure. After 7 days of culture under the same culture conditions, cardiomyocytes having an MOFs shell layer have significantly higher cell density than the cardiomyocytes. An MOFs-coated cardiomyocyte core-shell structure can be obtained according to the present disclosure.

Abstract: A call record synchronization method includes detecting, by a first terminal, an input operation for requesting to display a call record. The method further includes, after the first terminal detects the input operation, displaying, by the first terminal, a merged call record, where the merged call record is a call record obtained after merging of a call record of the first terminal and a call record of a second terminal. The merged call record includes a device identifier of the first terminal and/or a device identifier of the second terminal.

Abstract: A long-distance high-voltage cable fault degree detection method. A cable fault positioning curve is obtained by using a frequency-domain reflection method, and a cable fault positioning compensation curve is determined by means of theoretical calculation in combination with the parameters of a frequency-domain incident signal, cable structure parameters, and characteristic parameters of each layer of materials of the field test; furthermore, a cable fault diagnosis curve is determined on the basis of the cable fault positioning curve and the cable fault positioning compensation curve, the severity of the fault is determined by means of the amplitude of a peak point of the cable fault diagnosis curve, and the accuracy of long-distance high-voltage cable fault degree diagnosis is effectively improved.

Abstract: The present disclosure relates to the field of high-voltage AC cable insulation technologies, and provides a method for predicting insulation aging life of a high-voltage submarine cable and a device. The method includes: obtaining environmental data and cable breakdown time of a cable sample; the environmental data including an electric field, temperature, and mechanical stress applied to the cable sample by an environment; calculating characteristic breakdown time corresponding to the cable sample by Weibull distribution based on the cable breakdown time of the cable sample; determining an insulation aging life prediction model of the high-voltage submarine cable based on the environmental data and the characteristic breakdown time of the cable sample; obtaining environmental data of a cable to be predicted in an actual application environment, and calculating insulation aging life of the cable to be predicted by using the prediction model.

Abstract: An interaction method, an interaction apparatus, and an electronic device are provided. The method includes: determining, in response to detecting a predefined size transformation operation, target transformation information of a target video based on whether a current size of the target video is a preset anchor point size, where the target video is a video played in a video play area; and transforming the target video based on the target transformation information, and playing the transformed target video.

Abstract: A matrix operation-based method for modifying a mobile social network graph, including step S1: obtaining a accessibility matrix set A of a social network graph to be modified; step S2: determining information to be modified for each node in the social network graph to be modified, and creating a List to be modified; step S3: for each node in the social network graph to be modified, determining whether edge adding is required according to the List to be modified; and step S4: if there is still a non-zero value in the List after all nodes are traversed, directly adding Max(List) nodes to a network, and randomly performing edge connection between the added nodes and nodes still requiring edge adding, so that all values in the List are zero, thereby completing graph modification.

Abstract: Embodiments of the present invention relate to a call record synchronization method, a cloud platform, and a terminal. The method includes: detecting, by a first terminal, an input operation for requesting to display a call record; and after the first terminal detects the input operation, displaying, by the first terminal, a merged call record, where the merged call record is a call record obtained after merging of a call record of the first terminal and a call record of a second terminal, and the merged call record includes a device identifier of the first terminal and/or a device identifier of the second terminal. According to the embodiments of the present invention, a user can use the merged call record to identify call answering or making statuses on a plurality of terminals, without querying a plurality of call records. This improves user experience.

Abstract: A crystal form of a pyridinylphenyl compound and a preparation method therefor. Use of the crystal form in the preparation of a medicament of treating related diseases is also comprised.

Abstract: The invention belongs to the technical field of medicine, and particularly relates to nucleoside drugs for the treatment or prevention of coronavirus infection and uses thereof. The present invention also relates to a method for preparing prodrugs of a nucleoside drug. The nucleoside drugs of formula (I) or (II) disclosed herein are more suitable for oral administration to subjects in need as compared to other nucleoside drugs, such as remdesivir for injection.