Abstract: The method includes: obtaining an input information bit sequence; determining a target matrix based on a first polar code generation matrix and a transformation matrix; encoding the input information bit sequence based on an inverse matrix of a first matrix, to obtain a first bit sequence, where the input information bit sequence is a bit sequence corresponding to an information bit, and the first matrix is a submatrix formed by a row corresponding to the information bit and a column corresponding to the information bit that are in the target matrix; and encoding the first bit sequence based on a second matrix, to obtain a second bit sequence, where the second matrix is a submatrix formed by the row corresponding to the information bit and a column corresponding to a frozen bit that are in the target matrix.

Abstract: This application provides an encoding method and an encoding apparatus based on a polar code, to improve compression performance of a source sequence of a limited length. The method includes: obtaining a source bit sequence; encoding the source bit sequence by using a polar code generation matrix that is based on sub-block column transformation, to obtain a first bit sequence, where the polar code generation matrix that is based on the sub-block column transformation is determined based on a first polar code generation matrix and a transformation matrix, and the transformation matrix may achieve effect of performing sub-block column transformation on the first polar code generation matrix; and compressing the first bit sequence, to obtain a compressed bit sequence.

Abstract: Provided is a distributed addressing and fast routing method and a system thereof, which belongs to the technical field of satellite communication. First, a satellite relative motion model is established, thereafter, an appropriate reference frame satellite is selected to deploy a controller based on the established satellite relative motion model, subsequently, satellite addresses have been allocated based on the deployed controller, and finally a routing table is synchronously established based on the allocated satellite addresses. A brand-new packet communication protocol of the present disclosure is more flexible in setting the structure of each field. Positioning the controller satellite with betweenness centrality ensures the short-distance communication between the controller and the satellites. The distributed addressing method reduces the frequent communication between satellites and improves the address allocation speed.

Abstract: The method in embodiments of this application includes: A first communication apparatus obtains a first transport block. The first communication apparatus converts the first transport block into S information segments. The first communication apparatus performs pre-processing on the S information segments based on X processing modes, to obtain G information groups, where each of the G information groups corresponds to one of the X processing modes, G is an integer greater than or equal to 1. The first communication apparatus determines C to-be-encoded code blocks based on the G information groups, and a sum of sizes of the C to-be-encoded code blocks is less than a size of the first transport block. The first communication apparatus performs channel coding on the C to-be-encoded code blocks, to obtain an encoded code block. The first communication apparatus outputs the encoded code block.

Abstract: Various methods and systems are provided for a table support for a mobile imaging system. In one example, a table support for a mobile imaging system includes a fixture comprising a frame and a plurality of posts coupled to the frame, a table interface comprising a set of table flanges configured to be attached to a patient table of the mobile imaging system and a set of complementary table flange acceptors coupled to a top surface of the frame of the fixture, and a floor interface including a set of floor brackets removably coupleable to a set of floor panels configured to be attached to a floor of a unit configured to house the mobile imaging system, each floor bracket coupled to two respective posts of the plurality of posts.

Abstract: An electroplating device includes a process chamber, a paddle plate and a driving mechanism. The driving mechanism is used for driving the paddle plate to move back and forth to make the paddle plate stir the electroplating solution in the process chamber when a substrate is electroplated. The electroplating device further includes a cleaning assembly and a connecting bracket. The cleaning assembly is used for spraying a cleaning solution onto the electroplated substrate. One end of the connecting bracket is connected to the paddle plate, and the other end of the connecting bracket is connected to the driving mechanism, and the driving mechanism drives the paddle plate to move back and forth via the connecting bracket. The connecting bracket is opened with a hollowed-out area, and the cleaning solution sprayed onto the substrate is collected after passing through the hollowed-out area.

Abstract: An endoscopic surgery platform includes a surgical bed and multiple surgical manipulators. Multiple surgical manipulators are arranged in a matrix on both sides of the surgical bed, and a positioning mechanism is arranged at the bottom of the surgical bed. The surgical manipulator can be stored at the bottom of the surgical bed through the positioning mechanism. The positioning mechanism includes a plurality of surgical manipulators positioned on the bottom of the surgical bed, a plurality of lateral moving pairs for moving along the length direction of the surgical bed, and multiple longitudinal moving pairs connected to the output end of multiple lateral moving pairs respectively and used to move along the width direction of the surgical bed. Longitudinal moving pair, lateral moving pairs and surgical manipulators are connected one by one.

Abstract: A controller for operating building equipment of a building including processors and non-transitory computer-readable media storing instructions that, when executed by the processors, cause the processors to perform operations including obtaining a first setpoint trajectory from a cloud computation system. The first setpoint trajectory includes setpoints for the building equipment or for a space of the building. The setpoints correspond to time steps of an optimization period. The operations include determining whether a connection between the controller and the cloud computation system is active or inactive at a time step of the optimization period and determining an active setpoint for the time step of the optimization period using either the first or second setpoint trajectory based on whether the connection between the controller and the cloud computation system is active or inactive at the time step. The operations include operating the building equipment based on the active setpoint.

Abstract: Provided are a method for preparing an organic/inorganic hybrid thermally conductive and insulating two-component adhesive and a method for using the same. The purpose is to solve the problem that thermally conductive adhesives in the prior art cannot meet the requirements of thermal conductivity, good bonding performance and insulation characteristics at the same time. The method includes: 1. preparing an organic phase aluminum dihydrogen phosphate; 2. treating a diamond thermally conductive filler; 3. modifying polyurethane compatible with aluminum dihydrogen phosphate; and 4. preparing an organic/inorganic hybrid insulating two-component adhesive. The use method includes: coating the adhesive onto a surface of a material to be bonded, and bonding; and subjecting a resulting member to be bonded to defoaming, heating, and holding.

Abstract: A gearbox casing is provided in which a bottom part or a side part of the gearbox casing has a number of first coolant tanks. The gearbox casing above a bottom part of the first coolant tanks is provided therein with a lubricating liquid, and the first coolant tanks are used to cool the lubricating liquid. A first coolant tank is provided therein with a number of parallel partition walls, by which the first coolant tank is separated into at least two communicated sub-tanks that are provided with first fixed guide ribs and first suspended guide ribs to divide the coolant.

Abstract: Embodiments of the present disclosure disclose obtaining to-be-encoded first information that includes first and second information bit sets. The bits included in the first information bit set are obtained through decoding by a plurality of terminal devices. The bits included in the second information bit set are able to be obtained through decoding by some of the plurality of terminal devices. Polar encoding is first performed on the first information bit set to obtain first encoded information. Polar encoding is then performed on the second information bit set based on the first encoded information to obtain second encoded information.

Abstract: Disclosed is a bio-enzyme degradable temporary plugging material and a preparation method and application thereof in the technical field of natural gas hydrate drilling and production; the preparation method of the bio-enzyme degradable temporary plugging material includes the following steps: mixing the ceramsite with an aqueous solution of 3-aminopropyl trimethoxysilane before a stirring reaction and drying to obtain modified ceramsite; and fully dispersing the modified ceramsite, ethyl cellulose, and epoxy resin in dichloromethane to obtain an oil phase; adding the oil phase into a gelatin aqueous solution and mixing uniformly; after a stirring reaction, evaporating an organic solvent, filtering, washing, and drying, to obtain the bio-enzyme degradable temporary plugging material.

Abstract: A method and an apparatus for encoding and for decoding a polar code to reduce complexity and improve speed. For encoding, information bits are obtained, an original kernel matrix is adjusted to construct one or more kernel matrices, an appropriate target kernel matrix is selected from the one or more kernel matrices, and polar encoding is performed on the information bits based on the target kernel matrix. For decoding, a to-be-decoded sequence is obtained, and the to-be-decoded sequence is decoded based on a plurality of trellises, where intermediate results obtained in different decoding stages may be reused. For example, in a (t+i)th stage of decoding, an intermediate result obtained in a tth stage of decoding is reused.

Abstract: In a method for extracting microbial DNA from milk, the extracted DNA can be directly used for PCR amplification. The method includes the following steps: treating milk with TE solution, fully disrupting microbial cells by bead milling, immobilizing proteins in the middle layer between the aqueous and organic phases with high-vacuum silicone grease so as to prevent impurities in the middle layer from entering the aqueous phase, etc. The extracted DNA has a high degree of intactness, high concentration and purity.

Abstract: A method includes displaying a game image including a first virtual character at a first space location in a game scene of a gaming application. The game scene includes a target sound associated with a second space location in the game scene. The method also includes displaying first orientation prompt information of the target sound according to a three-dimensional virtual sphere in the game image. The first orientation prompt information includes a first marker, a second marker, and a first connecting line between the first marker and the second marker. The first marker is located at a first location of the three-dimensional virtual sphere associated with the first space location, the second marker is located at a second location of the three-dimensional virtual sphere associated with the second space location, and the first connecting line indicates a first orientation of the second space location relative to the first space location.

Abstract: Provided is a liquid crystal material applied to a multi-response-mode smart window and an application thereof. The present disclosure relates to a liquid crystal material and an application thereof. The problem of high drive voltage of the liquid crystal smart window based on dynamic scattering mode in the prior arts can be solved. The liquid crystal material applied to the multi-response-mode smart window is formed by mixing a dichroic dye, an ionic dopant and a liquid crystal. It is applied to preparing an electrohydrodynamics liquid crystal dimming device which is capable of switching among transparent state, light-absorbing state and scattering state under a drive voltage of 5V to 50V and a drive frequency of 1 Hz to 5 kHz.

Abstract: The present application discloses a method and a device for indicating a path loss reference signal, a terminal, a base station and a storage medium. The method for indicating a path loss reference signal includes: receiving an uplink transmission control signaling transmitted by a base station; determining a spatial domain relationship parameter of uplink transmission according to the uplink transmission control signaling; and determining a path loss reference signal used for uplink transmission power control according to the spatial domain relationship parameter of uplink transmission. According to the technical solutions provided by the embodiments, the path loss reference signal is determined according to the spatial domain relationship parameter, which saves signaling overhead, and improves configuration flexibility of a path loss reference signal used for uplink transmission power control.

Abstract: An in-site composting system for community kitchen waste is provided, which includes: a dump unit, configured to receive a kitchen waste; a power energy conversion unit, configured to convert a part of energy generated by a fitness equipment or a rocking handle into electrical energy, and output a remaining part of the generated energy directly as power, a biological conversion unit, configured to receive the kitchen waste fed by the dump unit and perform a composting and fermentation processing on the kitchen waste; an energy storage unit, configured to store the electrical energy generated by the power energy conversion unit and the solar panel; and a material outputting and returning unit, configured to be connected to the biological conversion unit, wherein the material outputting and returning unit is configured to output and return a material decomposed by the biological conversion unit.

Abstract: Systems and methods are provided for a patient table. The patient table may include a bed coupled to a base via a midsection and a docking bar coupled to the base. The docking bar may be movable between a first position, where a first longitudinal axis of the docking bar is parallel to a second longitudinal axis of the base, and a second position, where the first longitudinal axis is perpendicular to the second longitudinal axis. The docking bar may include a releasable bottom surface configured to be brought into contact with a base support of a patient lift.

Abstract: The present application relates to an attitude self-correcting underground transportation apparatus based on UWB technology and a control method thereof. A transport clamping and fastening mechanism is mounted on an upper platform part of a six-degree-of-freedom motion platform. An attitude perception and sensing set at least includes three UWB tags being configured to acquire position information.