Abstract: A two-dimensional continuous-discontinuous combined numerical approach for solid fracturing simulation, which includes: discretizing two-dimensional solid into finite elements to obtain a mapping linked list relationship between master-slave nodes; determining whether a crack is initiated according to whether the local stress of the finite element satisfies a strength criterion; if a crack initiates, activating a corresponding pre-embedded cohesive element, updating the mapping linked list relationship between the master-slave nodes at the same time, the cohesive element at the crack enters a yield state, and the mechanical behavior thereof is controlled by a strain softening constitutive curve; and, according to the mapping linked list relationship between the master-slave nodes, accumulating node forces and masses of the slave nodes onto the master node, and updating the velocity and the displacement of the master-slave nodes by adopting a governing equation.

Abstract: A method for feature tracking, image matching, using key point detection and a unique approach for associated key patch frequency domain descriptors. The system includes at least one processor and one or more computer storage media storing computer executable instructions that, when executed by the processor, cause the system to perform various operations. In particular, the system identifies a plurality of patches from a first image, detects one or more key points and associated patches from the plurality of patches, generates a set of transformed patches by transforming the key patches from the spatial domain to the frequency domain using a Discrete Cosine Transform or Discrete Fourier transform, encodes a set of illumination, rotational, scale and other geometric transformations of the transformed patches into a frequency descriptor, and matches a second image to the first image using the descriptors.

Abstract: Embodiments of the disclosure provide a method for generating a dynamic image, an electronic device for the same and a storage medium for the same. The electronic device obtains a video based on a trigger operation. The electronic device obtains images of the video by separating the images an audio data of the video. The images include first images and second images. The electronic device obtains target images by processing the first images. Each of the target images does not contain the target object. The electronic device generates the dynamic image based on the images and the target images.

Abstract: Embodiments of the disclosure provide a method for generating a dynamic image, an electronic device for the same and a storage medium for the same. The electronic device obtains a video based on a trigger operation. The electronic device obtains images of the video by separating the images an audio data of the video. The images include first images and second images. The electronic device obtains target images by processing the first images. Each of the target images does not contain the target object. The electronic device generates the dynamic image based on the images and the target images.

Abstract: The present application discloses a gas logging system, including a degasser configured to degas a sample to separate a gas to be tested; and a detector connected to the degasser and configured to receive the gas to be tested separated by the degasser and perform detection, where the degasser comprises a degassing cover, the degassing cover includes a spherical crown disk surface and a plurality of semipermeable membrane degassing units on the spherical crown disk surface, wherein the plurality of semipermeable membrane degassing units are arranged on the spherical crown disk surface according to the Fibonacci Spiral Rule. The gas logging system provided by the present application may improve the distribution uniformity of a drilling fluid on the degassing cover while increasing arrangement number, and reduce the impact on semipermeable membrane degassing units.

Abstract: The present invention relates to a downhole drilling tool system of torque self-balancing and belongs to a technical field of drilling engineering equipment. The drilling tool system consists of an assembly of internal and external drill bits, power components, a pressure adjustment system for internal and external drill bits, a mud circulating system, and an unfreezing system.

Abstract: The present application discloses a gas logging system, including a degasser configured to degas a sample to separate a gas to be tested; and a detector connected to the degasser and configured to receive the gas to be tested separated by the degasser and perform detection, where the degasser comprises a degassing cover, the degassing cover includes a spherical crown disk surface and a plurality of semipermeable membrane degassing units on the spherical crown disk surface, wherein the plurality of semipermeable membrane degassing units are arranged on the spherical crown disk surface according to the Fibonacci Spiral Rule. The gas logging system provided by the present application may improve the distribution uniformity of a drilling fluid on the degassing cover while increasing arrangement number, and reduce the impact on semipermeable membrane degassing units.

Abstract: The present invention relates to a downhole drilling tool system of torque self-balancing and belongs to a technical field of drilling engineering equipment. The drilling tool system consists of an assembly of internal and external drill bits, power components, a pressure adjustment system for internal and external drill bits, a mud circulating system, and an unfreezing system.

Abstract: A method for automatically switching an LBS-based wireless data network and a mobile terminal may include recording based on LBS, when the mobile terminal enables wireless data, login information and logins of the wireless data network in the current location, updating a network information list, establishing, based on logins, a wireless data network connection priority, searching a corresponding high-priority network when the location is changed, and sending a prompt to switch a network and log into a high-priority wireless data network.

Abstract: A method for heating oil shale underground in situ. Shale oil and fuel gas can be obtained from an underground oil shale seam in situ, and the fuel gas can also be obtained from an underground coal seam in situ. Wells are drilled downwardly reaching an operation region of an underground oil shale ore bed. Electricity for partial discharge of the ore bed is conducted into electrodes, and a plasma channel is formed in the ore bed and subjected to breakdown by the electricity; after the resistance of each of two electrode regions is lowered, the two electrodes are used for conducting currents into the plasma channel in the oil shale ore bed; the oil shale ore bed is heated under the resistance heating function of the plasma channel; and released heat is used for realizing thermal cracking and gasification of fixed organic carbon in the oil shale ore bed.

Abstract: A method for automatically switching an LBS-based wireless data network and a mobile terminal may include recording based on LBS, when the mobile terminal enables wireless data, login information and logins of the wireless data network in the current location, updating a network information list, establishing, based on logins, a wireless data network connection priority, searching a corresponding high-priority network when the location is changed, and sending a prompt to switch a network and log into a high-priority wireless data network.

Abstract: A processing method and system for automatically photographing based on eyeball tracking technology are disclosed. When an automatic photographing is executed, it is detected whether eyes of a photographed person have been looking at a camera. Then, the camera focuses on a range in which the eyes serve target points and executes automatically photographing in a preset countdown. The present disclosure automatically focuses and photographs by utilizing the eyeball tracking technology, such that an automatic photographing is fast and convenient.

Abstract: A smart terminal and related method for displaying application icons is provided. The method for displaying application icons includes: customizing at least two function modes, and categorizing the application icons displayed on the main interface of a smart terminal into the corresponding function modes; adding and displaying a corresponding shortcut icon for each of the at least two function modes; when to unlock the lock interface, entering the corresponding function mode via the shortcut icon displayed on the lock interface to display the application icons corresponding to the function mode. By the above means, the present disclosure enable the user to rapidly find the application icon currently needed via the shortcut icons of the customized function modes when entering the lock interface, thus enhancing the use efficiency of application programs of the user.

Abstract: The disclosure relates to a multi-functional printer. The multi-functional printer comprises an automatic document feeder member located in a scanner device and being movable between a unlifted position and a lifted-up position; a pen door located in a printer device and being movable between an open position and a closed position; and a link mechanism positioned between the automatic document feeder member and the pen door, such that when the automatic document feeder member is moved between the unlifted position and the lifted-up position, the pen door moves with the automatic document feeder member to open or close the pen door.

Abstract: Method and apparatus for controlling an electrical device and a wireless charging device, each comprising one or more modules. An interrupt signal is received. A type of the interrupt signal is determined. A first module is activated based on the type of the interrupt signal to perform one or more functions. The electrical device and the wireless charging device share at least the first module.

Abstract: The present disclosure discloses a device, system and method for bi-phase modulation decoding. The bi-phase modulation decoding device includes a sliding-window module and a determination module. The sliding-window module is configured to receive a baseband signal corresponding to a bi-phase modulated signal, and generate a filtered data packet by filtering the baseband signal using sliding-window digital filtering, wherein the filtered data packet comprises a series of sliding-window output values. The determination module configured to determine a bitstream corresponding to the bi-phase modulated signal based on the filtered data packet. The determination module determines a bit value of a first bit cycle of the bi-phase modulated signal based on a sign of a sliding-window output value of the first bit cycle and a sign of a sliding-window output value of a next bit cycle.

Abstract: The disclosure relates to a multi-functional printer. The multi-functional printer comprises an automatic document feeder member located in a scanner device and being movable between a unlifted position and a lifted-up position; a pen door located in a printer device and being movable between an open position and a closed position; and a link mechanism positioned between the automatic document feeder member and the pen door, such that when the automatic document feeder member is moved between, the unlifted position and the lifted-up position, the pen door moves with the automatic document feeder member to open or close the pen door.

Abstract: Method and apparatus for controlling an electrical device and a wireless charging device, each comprising one or more modules. An interrupt signal is received. A type of the interrupt signal is determined. A first module is activated based on the type of the interrupt signal to perform one or more functions. The electrical device and the wireless charging device share at least the first module.

Abstract: A method for determining bit boundary of a navigation bit of a satellite signal received by a receiver is disclosed. The method includes dividing an assumed navigation bit equally into a plurality of power units, calculating unit powers of each of the plurality of power units, and determining a plurality of phases. Each of the plurality of phases is associated with an estimated bit boundary. The method further includes adding unit powers of the plurality of power units to obtain a plurality of bit powers. Each of the plurality of bit powers corresponds to the estimated bit boundary associated with one of the plurality of phases. The bit boundary of the navigation bit is determined based on the plurality of bit powers.

Abstract: Methods and systems for estimating pseudorange error are described. A method for estimating a pseudorange error includes generating a plurality of coarse/acquisition (C/A) codes corresponding to a satellite according to intermediate frequency (IF) signal data obtained from the satellite. The method further includes determining autocorrelation values for each of the plurality of C/A codes with the IF signal data; obtaining a first time-shifted value of a first prompt C/A code and a second time-shifted value of a second prompt C/A code corresponding to a maximum autocorrelation of the autocorrelation values; and determining a pseudorange error based on the first time-shifted value, the second time-shifted value, and the autocorrelation values. The plurality of C/A codes may include the first prompt C/A code, early C/A codes advanced relative to the first prompt C/A code, and late C/A codes delayed relative to the first prompt C/A code.