Abstract: A method, system, electronic device and storage medium for constructing locally convex feasible space are provided. The method includes acquiring a plurality of initial motion trajectory points, size information and surrounding obstacle information of a target vehicle; generating a quadtree map according to the above information; determining a target distance corresponding to each initial motion trajectory point according to the quadtree map; allocating locally convex feasible space to a first-type initial motion trajectory point by using the quadtree map, and allocating locally convex feasible space to a second-type initial motion trajectory point by using an improved convex feasible set algorithm. The first-type initial motion trajectory point is an initial motion trajectory point with the target distance greater than or equal to a set threshold; and the second-type initial motion trajectory point is an initial motion trajectory point with the target distance less than the set threshold.

Abstract: Disclosed a method for predicting permeability of a multi-mineral phase digital core based on deep learning. In the present disclosure, a three-dimensional digital core is constructed and a pore structure is randomly generated; after a plurality of multi-mineral digital core images is acquired by performing image segmentation on the three-dimensional digital core, permeability corresponding to each of the multi-mineral digital core images is acquired by simulation using multi-physics field simulation software and a multi-mineral digital core data set is constructed based on the plurality of multi-mineral digital core images and the permeability corresponding to each of the multi-mineral digital core images; an SE-ResNet18 convolutional neural network is constructed and trained with the multi-mineral digital core data set; and an image of a multi-mineral core to be predicted is input into the trained SE-ResNet18 convolutional neural network to determine the permeability of the multi-mineral core.

Abstract: This disclosure may provide a system and a method. The method may include obtaining one or more sets of reference signals collected by a coil of a magnetic resonance imaging (MRI) device in a pre-scan. The pre-scan may be performed on a subject before an MRI scan of the subject. The method may also include obtaining a first fault detection model. The first fault detection model may be a trained machine learning model. The method may further include determining whether the coil has a failure based on the one or more sets of reference signals and the first fault detection model.

Abstract: Embodiments of the present disclosure provide a music playing method and device, where the method includes: receiving a first operation instruction in a first application with a function of video playing; and invoking a music player to play music in the first application in response to the first operation instruction. According to the embodiments of the present disclosure, music can be played in a first application through a first operation instruction of a user, avoiding that the user exits from the first application and then enters the music application to play music, and reducing an operation complexity of the user.

Abstract: The present disclosure provides a method and system for constructing a digital rock, and relates to the technical field of digital rocks. According to the method, a three-dimensional (3D) digital rock image that can reflect real rock information is obtained using an image scanning technology, and the image is preprocessed to obtain a digital rock training image for training a generative adversarial network (GAN). The trained GAN is stored to obtain a digital rock construction model. The stored digital rock construction model can be directly used to quickly construct a target digital rock image. This not only greatly reduces computational costs, but also reduces costs and time consumption for obtaining high-resolution sample images. In addition, the constructed target digital rock image can also reflect real rock information.

Abstract: Aspects of this disclosure relate to a parallel hybrid acoustic passive filter. The parallel hybrid acoustic passive filter includes a first sub-filter and a second sub-filter. The first sub-filter includes a first acoustic resonator and a first non-acoustic passive component. The second sub-filter includes a second acoustic resonator and second first non-acoustic passive component. The first sub-filter and the second sub-filter are together arranged to filter a radio frequency signal. The parallel hybrid acoustic filter can be a band pass filter or a band stop filter, for example. Related multiplexers, wireless communication devices, and methods are disclosed.

Abstract: An aqueous dispersion composition according embodiments of the present invention includes an ethylene-carboxylic acid copolymer, an anti-blocking agent including a polymer wax included in a content of 5 wt % or more based on a weight of the ethylene-carboxylic acid copolymer, and an aqueous dispersion medium. A peak area corresponding to a melting point of 80° C. or less in a differential scanning calorimetry (DSC) graph is 50% or more. Blocking phenomenon is suppressed using the anti-blocking agent while achieving desired heat seal properties.

Abstract: Aspects of this disclosure relate to a band pass filter that includes LC resonant circuits coupled to each other by a capacitor. A bridge capacitor can be in parallel with series capacitors, in which the series capacitors include the capacitor coupled between the LC resonant circuits. The bridge capacitor can create a transmission zero at a frequency below the passband of the band pass filter. The LC resonant circuits can each include a surface mount capacitor and a conductive trace of the substrate, and an integrated passive device die can include the capacitor. Band pass filters disclosed herein can be relatively compact, provide relatively good out-of-band rejection, and relatively low loss.

Abstract: A PTC starter is provided. A first pin is electrically connected to a first electrode of a thermistor. The thermistor and an elastic element are arranged in respective mounting cavities. The elastic element is provided with a connecting piece, through which a second pin is electrically connected to or disconnected from a second electrode of the thermistor. In a normal state of the thermistor, the elastic element is in an elastic deformation state, a first contact part and a second contact part of the elastic element are in electrical contact with the second electrode of the thermistor and the second pin respectively. After the thermistor ruptures, the elastic element resets, which causes the connecting piece to move so that the second contact part of the elastic element detaches from the second pin. An isolation structure is provided between the thermistor mounting cavity and the elastic element mounting cavity.

Abstract: The disclosure discloses an intelligent terminal energy saving method based on artificial intelligence (AI) prediction. The method includes: collecting application (APP)-related operation data on the intelligent terminal; carrying out AI analysis on the APP-related operation data collected, to predict timing and a restriction measurement to restrict an APP in a background; and adopting the restriction measurement to restrict the APP in the background at the timing predicted. Corresponding to the method, the disclosure further discloses an intelligent terminal energy saving device based on AI prediction. Using the technical schemes disclosed in the disclosure, the power consumption of applications on a portable intelligent terminal can be reduced, and the battery life can be extended, without affecting the user experience.

Abstract: A PTC starter is provided. A first pin is electrically connected to a first electrode of a thermistor. The thermistor and an elastic element are arranged in respective mounting cavities. The elastic element is provided with a connecting piece, through which a second pin is electrically connected to or disconnected from a second electrode of the thermistor. In a normal state of the thermistor, the elastic element is in an elastic deformation state, a first contact part and a second contact part of the elastic element are in electrical contact with the second electrode of the thermistor and the second pin respectively. After the thermistor ruptures, the elastic element resets, which causes the connecting piece to move so that the second contact part of the elastic element detaches from the second pin. An isolation structure is provided between the thermistor mounting cavity and the elastic element mounting cavity.

Abstract: A direct liquid fuel cell power generation device comprises a direct liquid fuel cell system and a low-temperature auxiliary starting component. A heat exchanger is arranged at a stack cathode inlet. The heat of a fuel solution at a stack anode outlet is used to heat the air. The heat generated by an electronic load for starting is used to heat a condenser. The heat of a methanol solution at a liquid outlet of a gas-liquid separator is used to preheat high-concentration fuel flowing into a refueling pump. Starting and operation in a low-temperature environment can be realized through auxiliary heating of external power supplies such as the low-temperature auxiliary starting component or an in-vehicle cigarette lighter. Organic micromolecule substances such as methanol and ethanol are used as fuel and are subjected to catalytic combustion in a catalytic combustor.

Abstract: The present disclosure provides a method and system for constructing a digital rock, and relates to the technical field of digital rocks. According to the method, a three-dimensional (3D) digital rock image that can reflect real rock information is obtained using an image scanning technology, and the image is preprocessed to obtain a digital rock training image for training a generative adversarial network (GAN). The trained GAN is stored to obtain a digital rock construction model. The stored digital rock construction model can be directly used to quickly construct a target digital rock image. This not only greatly reduces computational costs, but also reduces costs and time consumption for obtaining high-resolution sample images. In addition, the constructed target digital rock image can also reflect real rock information.

Abstract: The disclosure discloses an intelligent terminal energy saving method based on artificial intelligence (AI) prediction. The method includes: collecting application (APP)-related operation data on the intelligent terminal; carrying out AI analysis on the APP-related operation data collected, to predict timing and a restriction measurement to restrict an APP in a background; and adopting the restriction measurement to restrict the APP in the background at the timing predicted. Corresponding to the method, the disclosure further discloses an intelligent terminal energy saving device based on AI prediction. Using the technical schemes disclosed in the disclosure, the power consumption of applications on a portable intelligent terminal can be reduced, and the battery life can be extended, without affecting the user experience.

Abstract: A method for relieving vaulted expansion of a cement-stabilized base layer through precut seams. The method firstly establishes an RBFN model according to a large number of observation results of a vaulted expansion amount of the cement-stabilized base layer under different conditions (such as temperature and a stress release structure) in Xinjiang and similar regions; and on such a basis, the vaulted expansion amount of the cement-stabilized base layer to be designed is predicted. When the vaulted expansion amount is greater than a control requirement, the RBFN model is configured to design a reasonable width and a reasonable interval of the precut wide expansion seams to ensure that the vaulted expansion amount of the cement-stabilized base layer is less than a control value. Based on the design of the RBFN model, the present invention provides a corresponding construction method for the precut wide expansion seams.

Abstract: The present invention discloses a method for relieving vaulted expansion of a cement-stabilized base layer through precut seams. The method firstly establishes an RBFN model according to a large number of observation results of a vaulted expansion amount of the cement-stabilized base layer under different conditions (such as temperature and a stress release structure) in Xinjiang and similar regions; and on such a basis, the vaulted expansion amount of the cement-stabilized base layer to be designed is predicted. When the vaulted expansion amount is greater than a control requirement, the RBFN model is configured to design a reasonable width and a reasonable interval of the precut wide expansion seams to ensure that the vaulted expansion amount of the cement-stabilized base layer is less than a control value. Based on the design of the RBFN model, the present invention provides a corresponding construction method for the precut wide expansion seams.

Abstract: A wireless communication circuit includes: a physical-layer circuit, arranged to operably communicate with other wireless communication devices through an antenna; a micro-controller, arranged to operably generate data frames to be transmitted to other wireless communication devices; and a MAC-layer circuit comprising: a MAC-layer storage circuit for storing a data queue; a MAC-layer control circuit, coupled with the physical-layer circuit, the micro-controller, and the MAC-layer storage circuit, arranged to temporarily store the data frames generated by the micro-controller in the data queue; and a scheduling circuit, coupled with the MAC-layer storage circuit and the MAC-layer control circuit, arranged to operably schedule a timing that the MAC-layer control circuit transmits data stored in the data queue to the physical-layer circuit.

Abstract: A direct liquid fuel cell power generation device comprises a direct liquid fuel cell system and a low-temperature auxiliary starting component. A heat exchanger is arranged at a stack cathode inlet. The heat of a fuel solution at a stack anode outlet is used to heat the air. The heat generated by an electronic load for starting is used to heat a condenser. The heat of a methanol solution at a liquid outlet of a gas-liquid separator is used to preheat high-concentration fuel flowing into a refueling pump. Starting and operation in a low-temperature environment can be realized through auxiliary heating of external power supplies such as the low-temperature auxiliary starting component or an in-vehicle cigarette lighter. Organic micromolecule substances such as methanol and ethanol are used as fuel and are subjected to catalytic combustion in a catalytic combustor.

Abstract: A wireless communication circuit includes: a physical-layer circuit, arranged to operably communicate with other wireless communication devices through an antenna; a micro-controller, arranged to operably generate data frames to be transmitted to other wireless communication devices; and a MAC-layer circuit comprising: a MAC-layer storage circuit for storing a data queue; a MAC-layer control circuit, coupled with the physical-layer circuit, the micro-controller, and the MAC-layer storage circuit, arranged to temporarily store the data frames generated by the micro-controller in the data queue; and a scheduling circuit, coupled with the MAC-layer storage circuit and the MAC-layer control circuit, arranged to operably schedule a timing that the MAC-layer control circuit transmits data stored in the data queue to the physical-layer circuit.

Abstract: The present disclosure provides a method for improving imaging resolution of electrical impedance tomography (EIT). More specifically, the present disclosure forms virtual electrode(s) using an electric current steering technique, which is used to improve imaging resolution of an EIT system without physically increasing a number of conducting electrodes. The EIT system of the present disclosure may includes a plurality of conducting electrodes, at least one signal generator, at least one signal receiver and at least one electric current steering device. In other words, the present disclosure applies both the electric current steering technique and the virtual electrode technique to EIT. Consequently, imaging resolution of EIT can be improved without physically increasing the number of conducting electrodes.