Abstract: A control method and apparatus, and a vehicle are provided. The method may be applied to the field of intelligent driving. The method includes: obtaining information about an obstacle around a vehicle and road environment information; determining a speed of the vehicle based on the information about the obstacle and the road environment information; and controlling the vehicle based on the speed. The method may be applied to an intelligent vehicle or an electric vehicle. A speed that better meets a current scenario in which the vehicle is located is output, to help improve driving experience of a user.

Abstract: This disclosure provides a method for ping pong roaming control performed by an access point (AP), a method for ping pong roaming control performed by a controller, an AP, a controller, a non-transitory computer readable storage medium and a computer program product. The method for ping pong roaming control, the method is performed by a controller and includes: receiving one or more connection instability events of one or more stations (STAs) from one or more APs; identifying a ping pong roaming event of a first STA of the one or more STAs based on the one or more connection instability events; determining a ping pong roaming processing strategy for the first STA; and transmitting a ping pong roaming processing instruction to at least one AP of the one or more APs to perform ping pong roaming processing operations based on the determined ping pong roaming processing strategy.

Abstract: A method for evaluating a driving risk level in a tunnel based on vehicle bus data and a system therefor are provided. The method uses the Controller Area Network (CAN) bus data collected in a vehicle driving process, designs and extracts a driving risk characteristic feature index reflecting the driving behavior of a driver through a sliding time window method, writes a feature codebook to symbolize an extracted sequence feature, and then randomly samples all of the samples, and based on the sampled symbolic data, using a Latent Dirichlet Allocation (LDA) theme model to evaluate the driving risk level. The training method of the model is to acquire the optimal number of risk levels by evaluating the perplexity and the coherence scores, and to analyze the driving risk of the driving data in all of the samples.

Abstract: A method includes accessing training images and labels, where the training images depict fluorescence from samples and the labels indicate pH levels of the samples. The method also includes training a computational model, using the training images and the labels, to determine pH levels on tissue inside of a patient's mouth depicted by captured images. Another method includes generating one or more images of tissue inside of a patient's mouth, where the one or more images depict fluorescence from the tissue. The method also includes determining a pH level on the tissue using a model and pixel intensities of the one or more images, and generating an indication of the pH level on the tissue.

Abstract: A method for evaluating a driving risk level in a tunnel based on vehicle bus data and a system therefor are provided. The method uses the Controller Area Network (CAN) bus data collected in a vehicle driving process, designs and extracts a driving risk characteristic feature index reflecting the driving behavior of a driver through a sliding time window method, writes a feature codebook to symbolize an extracted sequence feature, and then randomly samples all of the samples, and based on the sampled symbolic data, using a Latent Dirichlet Allocation (LDA) theme model to evaluate the driving risk level. The training method of the model is to acquire the optimal number of risk levels by evaluating the perplexity and the coherence scores, and to analyze the driving risk of the driving data in all of the samples.

Abstract: The invention relates to the technical field of solar cells, in particular to a three-dimensional framework silicon/perovskite tandem solar cell and its preparation method. The three-dimensional framework silicon/perovskite tandem solar cell comprises a formal structure or a trans structure; a p-type amorphous silicon layer, a top electrode light-transmitting layer, an n-type transmission layer, a perovskite thin film, a p-type transmission layer, a buffer layer and a transparent electrode which are sequentially laminated on a substrate from bottom to top; when it is in a trans structure, it comprises a p-type silicon nanowire, an i-type intrinsic amorphous silicon layer, an n-type amorphous silicon layer, a top electrode light-transmitting layer, a p-type transmission layer, a perovskite thin film. The present invention can improve the absorption efficiency of the cell for incident light, broaden the absorption spectrum, and further improve the photoelectric conversion efficiency of the solar cell.

Abstract: Provided are a road traffic incident detection method, system and device based on small sample learning. According to the invention, traffic flow data and incident data are utilized to construct non-incident samples by a case contrast study method, traffic flow feature indexes are extracted to construct incident and non-incident sample feature sets, then sample division and pairing are performed on the feature sets to obtain training and test sample pair sets, a traffic incident detection model is constructed by adopting a twin network architecture in small sample learning, and the model is trained and tested by a sample pair mode. The invention is conductive to accurately detecting accidental traffic incidents, and providing supports for avoiding secondary accidents and improving the traffic safety level.

Abstract: This disclosure provides a method for determining a terminal in a sticky state. The method includes: determining whether a roaming target determination is supported for a terminal by a first AP; performing an operation for the roaming target determination based on determining that the roaming target determination is supported; performing at least one of determining that the terminal is in a first sticky state based on a determination that the terminal is not connected to a second AP according to a roaming target suggestion of the first AP, based on a finding of one or more roaming targets by the operation; or determining that the terminal is in a second sticky state based on a strength of a signal between the terminal and the first AP being smaller than a first strength threshold, based on determining that the roaming target determination is not supported or a failure of the operation.

Abstract: An intelligent toilet seat, a toilet and a monitoring system are provided. The intelligent toilet seat includes: a toilet seat box including a seat box housing, wherein the seat box housing defines a cavity therein; a toilet seat ring pivotally connected with the toilet seat box; a reminder button arranged on a side wall of the seat box housing and configured to accept an input operation to generate a trigger signal; and a control device accommodated in the cavity and including a control module and an IoT communication module, wherein the control module is electrically connected with the reminder button and the IoT communication module respectively, and is configured to trigger the IoT communication module to wirelessly send a reminder signal to an outside upon receiving the trigger signal from the reminder button.

Abstract: This disclosure provides a method for ping pong roaming control performed by an access point (AP), a method for ping pong roaming control performed by a controller, an AP, a controller, a non-transitory computer readable storage medium and a computer program product for processing/identifying ping pong roaming. The method for ping pong roaming control, performed by an AP includes: determining association switching behaviors of a station (STA) based on association and/or disassociation behaviors of the STA; identifying one or more connection instability events of the STA based on the association switching behaviors of the STA; and reporting at least one of the one or more connection instability events of the STA to a controller for the controller to identify a ping pong roaming event of the STA between multiple APs.

Abstract: The invention relates to a perovskite tandem solar cell based on a tunneling layer of two-dimensional layered metal carbides and metal nitrides, the tunneling junction composite layer is prepared by using two-dimensional layered metal carbides and metal nitrides, a dense layer is arranged on one side of the tunneling junction composite layer, and a transport layer is arranged on the other side. The two-dimensional layered metal carbide and metal nitride materials are selected from graphene, Ti3C2Tx, Mo2CTx, V2CTx, Nb2CTx and Ti2CTx. The tunneling junction structure of the invention can effectively reduce the light loss in the tandem solar cell and the interface recombination of the tandem cell, which can significantly improve the photocurrent generation and charge transfer of the perovskite/perovskite tandem solar cell, and improve the power conversion efficiency of the perovskite/perovskite tandem solar cell.

Abstract: The present disclosure relates to the field of inorganic non-metallic optoelectronic functional materials, and discloses wet-resistant fluoride red phosphor and preparation and application thereof, and a white light LED device. The fluoride red phosphor is a core-shell structure: the core is Mn4+ doped fluoride red phosphor, and the chemical structural formula is A2B1-xF6:xMn4+, herein A is at least one of Li, Na, K, Rb, and Cs, B is at least one of Ti, Si, Ge, Zr, and Sn, and 0?x?0.4; and the shell is a cubic perovskite-type compound, and the chemical structural formula is CMgF3, herein C is at least one of Li, Na, K, Rb, and Cs. The present disclosure uses CMgF3 generated as a coating waterproof layer, to form the A2B1-xF6:xMn4+ core-shell structure of which the surface is coated by CMgF3, and a wet-resistant problem of the fluoride red phosphor is overcome.

Abstract: An upflow reactor (1), includes a housing (20), a catalyst bed layer (30) and a pressing device (10). The housing (20) is internally provided with a reaction chamber (210), a reaction material inlet (220) and a reaction material outlet (230) which are in communication with the reaction chamber (210) are provided on the housing (20). The catalyst bed layer (30) is provided within the reaction chamber (210), the pressing device (10) is provided within the reaction chamber (210) and located above the catalyst bed layer (30). At least a part of the pressing device (10) is movable up and down so that the at least a part of the pressing device (10) can be pressed against the catalyst bed layer (30).

Abstract: The present application provides a remote-controlled gun, comprising a gun base, a gun body, an angle adjustment device, a camera, and a remote controller, wherein the angle adjustment device is connected with the gun body and the gun base, and configured for adjusting a pitch shooting angle of the gun body with respect to the gun base in a vertical plane and a left and right swing angle of the gun body with respect to the gun base in a horizontal plane; the camera is configured for monitoring a shooting target and a front sight of the gun body; the remote controller is connected with the camera and configured for displaying a monitoring image of the camera; and the remote controller is also connected with the angle adjustment device and configured for controlling the gun body to rotate with respect to the gun base until the front sight is aligned with the shooting target within a monitoring area; and the remote controller is also connected with the gun body, and configured for controlling the shooting of the

Abstract: An ultrasound imaging system may include a user interface that may be adapted based, at least in part, on usage data of one or more users. The functions of soft or hard controls may be changed in some examples. The layout or appearance of soft or hard controls may be altered in some examples. In some examples, seldom used controls may be removed from the user interface. In some examples, the user interface may be adapted based on an anatomical feature being imaged. In some examples, the usage data may be analyzed by an artificial intelligence/machine learning model, which may provide outputs that may be used to adapt the user interface.

Abstract: A large-flow precious metal channel is provided, which comprises a molten glass mixed-flow stirring section, at least two molten glass heating, clarifying and cooling sections are connected in parallel at one end of the molten glass mixed-flow stirring section, the other end of which is communicated with a liquid supply tank. The channel is mainly used for the clarification and homogenization of large-flow high-temperature molten glass in the production process of 8.5-generation and higher-generation TFT glass, and provides bubble-free and streak-free high-quality molten glass for subsequent float forming or overflow forming processes.

Abstract: Described herein is computing device for machine learning based risk analysis and decision automation in intelligent underwriting. In accordance with one aspect of the framework, input data of underwriting cases is preprocessed and used to train a predictive model. The predictive model may be cross-validated and tested for accuracy. The predictive model may then be applied to a current underwriting case in order to automatically identify and assess associated risks and provide a decision recommendation.

Abstract: An upflow reactor (1), comprising a housing (20), a catalyst bed layer (30) and a pressing device (10). The housing (20) is internally provided with a reaction chamber (210), a reaction material inlet (220) and a reaction material outlet (230) which are in communication with the reaction chamber (210) are provided on the housing (20); the catalyst bed layer (30) is provided within the reaction chamber (210), the pressing device (10) is provided within the reaction chamber (210) and located above the catalyst bed layer (30), and at least a part of the pressing device (10) is provided to be movable up and down, so that the at least a part of the pressing device (10) can be pressed against the catalyst bed layer (30).

Abstract: Use of carrimycin in Mycobacterium tuberculosis infection resistance comprises the main steps: measuring the activity of carrimycin in Mycobacterium tuberculosis resistance by adopting an absolute concentration method through taking clinical first-line antituberculotics, i.e., isoniazid and rifampicin as controls. The result indicates that carrimycin has obvious superior activity to clinically-separated Mycobacterium tuberculosis including drug-resistant bacteria compared with those of the clinical first-line control drugs, i.e., the isoniazid and the rifampicin, and use of carrimycin in manufacturing drugs for treating tubercle Bacillus infected diseases are expected to be developed.