Abstract: A calculation system for predicting a proppant embedding depth based on a shale softening effect is provided, including a sampling test terminal, a scheduling module, a monitoring module, and a calculation module, wherein the scheduling module, the monitoring module, and the calculation module are connected in communication, and the monitoring module is connected to an external operating system through a wireless network, wherein the external operating system is configured to perform a hydraulic fracturing operation and receive a first control signal and/or a second control signal from the monitoring module. The sampling test terminal is configured to test the samples and obtain test data. The scheduling module is configured to determine a target construction parameter.

Abstract: Disclosed in the disclosure are a method and apparatus for calibrating an exposure surface of an optical system, and a computer device and a storage medium. The method includes: performing flat-field correction on a photographing module; acquiring a grayscale distribution image; segmenting the grayscale distribution image into a mesh image including a plurality of segmented regions, and calculating a fitting grayscale value of each segmented region; selecting, as a reference grayscale value, a minimum fitting grayscale value from all the fitting grayscale values obtained through calculation, and calculating grayscale compensation coefficients corresponding to the other segmented regions, so as to generate a digital mask; and performing mask compensation, by using the digital mask, on a light projection image projected by the optical system, so as to obtain a printed image of which the exposure surface has a uniform irradiance value.

Abstract: The present application provides a method for preparing a prelithiated positive electrode current collector, the method comprising the following steps: gasifying a lithium source in an evaporation chamber filled with a protective gas; enabling an aluminum foil layer to pass through the evaporation chamber and depositing the metal lithium on a surface of the aluminum foil layer by means of vapor deposition; and transferring the aluminum foil layer deposited with the metal lithium to an annealing chamber filled with a protective gas and performing high-temperature annealing to form a lithium-aluminum alloy layer on the surface of the aluminum foil layer.

Abstract: An apparatus and method to implement shared virtual memory in a trust zone.

Abstract: An optoelectronic device includes a first electrode, a second electrode that is spaced apart from the first electrode, an optoelectronic unit that is disposed between the first electrode and the second electrode, an insulating layer and a driving electrode. The optoelectronic unit includes an optoelectronic stack emitting or absorbing at least two wavelengths of light. The insulating layer is disposed on a lateral side of the optoelectronic stack that extends in a stacking direction of the optoelectronic stack. The driving electrode is disposed on the insulating layer at a location corresponding in position to the optoelectronic unit and is separated from the first and second electrodes.

Abstract: An apparatus for downhole multi-dimensional imaging includes an acquisition unit configured to acquire a formation resistivity signal, an ultrasonic echo signal and an orientation signal regularly; a sector calculation unit configured to calculate, based on said orientation signal, a sector where a currently acquired signal is from; and a multi-dimensional imaging unit, configured to calculate, based on the signals acquired by the acquisition unit, data of resistivity, distance from a drilling tool to a borehole wall and ultrasonic echo amplitude, and distribute said data into all sectors for feature recognition and extraction, thus obtaining key features characterizing a current formation being drilled, said key features being transmitted to ground for guiding drilling process. The structural complexity and the length of the downhole imaging measurement instrument can be reduced, and feature recognition can be directly performed on the imaging data underground.

Abstract: A simulation method for a chronic atrophic gastritis (CAG) lesion includes: (1) taking a metaplasia lesion stage as a simulation object, (2) selecting a simulation form of spasmolytic polypeptide-expressing metaplasia (SPEM), and (3) conditionally deleting gene associated with retinoid-IFN-induced mortality-19 (GRIM-19) from gastric mucosal parietal cells. The present disclosure successfully simulates the SPEM, an initial metaplasia response after a gastric mucosal injury and the initial metaplasia response can progress into intestinal metaplasia (IM) and even gastric cancer (GC) under the continuous stimulation of chronic inflammation.

Abstract: A low density parity check (LDPC) channel encoding method for use in a wireless communications system includes a communication device encoding an input bit sequence by using a LDPC matrix to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. The encoding method can be used in various communications systems including the fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.

Abstract: This application relates to communicating information between communication devices. A channel coding method is disclosed. A communication device obtains an input sequence of K bits. The communication device encodes the input sequence using a low density parity check (LDPC) matrix H, to obtain an encoded sequence. The LDPC matrix H is determined according to a base matrix and a lifting factor Z. The base matrix includes m rows and n columns, m is greater than or equal to 5, and n is greater than or equal to 27. The lifting factor Z satisfies a relationship of 22*Z?K. According to the encoding method provided in the embodiments, information bit sequences of a plurality of lengths can be encoded for transmission between the communication devices.

Abstract: Embodiments of this disclosure provide techniques for communicating in a wireless communication system. In particular, a user equipment (UE) may receiving a security command message from a base station comprising an indication of an integrity protection algorithm and an indication of an encryption algorithm. The first security command message may trigger a radio resource control (RRC) traffic signaling protection procedure between the UE and the base station. The UE transmits a security command complete message to the base station. The security command complete message may trigger a packet data unit (PDU) session establishment procedure to establish a PDU session between the UE and the base station.

Abstract: Embodiments of the present disclosure provide a method for forming a hole structure in a semiconductor device. The method for forming a hole structure having a first hole portion and a second hole portion connected to and over the first portion in a stack structure of a semiconductor device includes determining a hard mask layer. An etching resistivity of the hard mask layer may be inversely proportional to a difference between a first lateral dimension of the first hole portion and a second lateral dimension of the second hole portion, and the first lateral dimension may be less than the second lateral dimension. The method may also include forming the hard mask layer over the stack structure, and patterning the hard mask layer to form a first patterned hard mask layer that has a first mask opening. The first mask opening may have the first lateral dimension.

Abstract: Techniques and mechanisms for determining an operation to be performed with a direct memory access (DMA) request. An inspection unit (105) is coupled between an input-output memory management unit (IOMMU) (120) and an endpoint device (118). The inspection unit (105) stores a registry (330) comprising entries (332) which each correspond to a respective address, and a respective one or more resources of the endpoint device (118). A given entry (332) of the registry (330) is created based on a message from the IOM MU (120) which indicates the successful completion of an address translation to facilitate a DMA request. The endpoint device (118) performs a search, based on a DMA request, to determine if any registry (330) entry (332) indicates a combination of an address and an endpoint resource, where said combination matches a corresponding combination indicated by the DMA request. Communication of the DMA request to the IOMMU (120) is contingent on a result of the search.

Abstract: An embodiment of an integrated circuit may comprise memory to store respective resource control descriptors in correspondence with respective identifiers, and an input/output (JO) memory management unit (IOMMU) communicatively coupled to the memory, the IOMMU including circuitry to determine resource control information for an IO transaction based on a resource control descriptor stored in the memory that corresponds to an identifier associated with the IO transaction, and control utilization of one or more resources of the IOMMU based on the determined resource control information. Other embodiments are disclosed and claimed.

Abstract: Embodiments of the present disclosure provide a method for forming a hole structure in a semiconductor device. The method includes forming a first etch mask over a stack structure, and removing a portion of the stack structure exposed by the first etch mask. The first etch mask may have a first mask opening with a first lateral dimension. The method may also include forming a second etch mask from the first etch mask. The second etch mask may have a second mask opening with a second lateral dimension that is greater than the first lateral dimension. The method may further include removing another portion of the stack structure exposed by the second etch mask to form the hole structure having a first hole portion and a second hole portion connected to and over the first hole portion.

Abstract: This application relates to communicating information between communication devices. A channel coding method is disclosed. A communication device obtains an input sequence of K bits. The communication device encodes the input sequence using a low density parity check (LDPC) matrix H, to obtain an encoded sequence. The LDPC matrix H is determined according to a base matrix and a lifting factor Z. The base matrix includes m rows and n columns, m is greater than or equal to 5, and n is greater than or equal to 27. The lifting factor Z satisfies a relationship of 22*Z?K. According to the encoding method provided in the embodiments, information bit sequences of a plurality of lengths can be encoded for transmission between the communication devices.

Abstract: A low density parity check (LDPC) channel encoding method for use in a wireless communications system includes a communication device encoding an input bit sequence by using a LDPC matrix to obtain an encoded bit sequence for transmission. The LDPC matrix is obtained based on a lifting factor Z and a base matrix. The encoding method can be used in various communications systems including the fifth generation (5G) telecommunication systems, and can support various encoding requirements for information bit sequences with different code lengths.

Abstract: This application discloses a method and an apparatus for processing information, a communications device, and a communications system. The communications device is configured to obtain a starting position of an output bit sequence in a coded block in a circular buffer, and determine the output bit sequence in the coded block based on a length of the output bit sequence and the starting position. A value of the starting position is one of {p0, p1, p2, . . . , pkmax?1}, where 0?pk<NCB, pk is an integer, k is an integer, 0?k<kmax, NCB is a size of the coded block, and kmax is an integer greater than or equal to 4.

Abstract: Systems and methods for managing a floating population can be used to obtain a register of a user from a user terminal via at least one terminal interface; receive a fingerprint input instruction from an administrator terminal via the at least one terminal interface; send the fingerprint input instruction to a fingerprint lock via the at least one network interface; obtain at least one fingerprint of the user from the fingerprint lock via the at least one network interface; send a notification to the administrator terminal via the at least one terminal interface after obtaining the at least one fingerprint of the user; and obtain a permission from the administrator terminal via the at least one terminal interface to permit the user associated with the user terminal to open the fingerprint lock using one of the at least one fingerprint.

Abstract: Embodiments include apparatuses, methods, and systems including one or more servers and one or more storage devices, coupled with each other, to provide virtual storage service to store a file and meta data of the file for a client computing device. The file and the meta data of the file may be encrypted by the client computing device before providing to the virtual storage service. The file may be encrypted with a secret key of the client computing device, and the meta data of the file may be encrypted with a shared session key between the client computing device and the virtual storage service. The encrypted file may be stored in the one or more storage devices, and the encrypted meta data of the file may be stored in one or more secured areas of the one or more servers. Other embodiments may also be described and claimed.

Abstract: A method for controlling access to an entrance may include receiving, via a network from a user terminal associated with a user, identity information and biological information related to the user. The method may also include obtaining a first determination whether the identity information matches the biological information. The method may also include obtaining a second determination whether the identity information has been registered in response to a result that the identity information matches the biological information. The method may also include transmitting the biological information to one or more authorization devices to provide a permission to the user in response to a result that the identity information has been registered. The permission may permit the user to access the entrance by inputting the biological information related to the user through one of the one or more authorization devices.