Abstract: A method for constructing a recognition model of a moisture damage of an asphalt pavement, and a method and system for recognizing the moisture damage of the asphalt pavement are provided. The method includes the following steps: S1, acquiring an initial dataset through a Ground Penetrating Radar (GPR) pavement field survey; S2, acquiring a time-frequency image set; S3, adjusting a resolution of a time-frequency image; and S4, constructing the recognition model and recognizing the moisture damage of the asphalt pavement with the recognition model. —A method and a system for recognizing the moisture damage of the asphalt pavement are further provided. The method for constructing and the method and the system for recognizing solves a technical problem of detecting the moisture damage of the asphalt pavement automatically to not only improving a precision of a moisture damage recognition, but also providing a novel method for analyzing GPR original data.

Abstract: A compilation method includes obtaining a source program code. The source program code includes a first function in a first language code and a second function in a second language code. The first language code is a native language. The second language code is a non-native language. The method also includes generating a third language code based on the source program code. The third language code includes a third function, a fourth function and a fifth function. The third function is generated based on the first function. The fourth function is generated based on the second function. The fifth function is generated based on the first function and the second function. Executing the third function invokes the fourth function via the fifth function.

Abstract: Method, device and medium are provided for information displaying. The method of information displaying includes in response to a predetermined operation by a first user in a first user interface, displaying an active user list comprising respective activity information of one or more active users having a predetermined association with the first user, wherein an active user of the one or more active users is a user who is online during a target time period; in response to that an online prompt instruction is received without displaying the first user interface or the active user list, displaying prompt information indicating that a second user having the predetermined association with the first user is online; and in response to a trigger operation on the prompt information, switching a current user interface to the first user interface with the active user list being displayed.

Abstract: A group delegation computing method includes: executing a key generation algorithm to obtain various types of keys; executing a member joining algorithm to implement a member joining function, combining customers with the same need into a group, and delegating a blinded delegation function to a cloud server; executing a question generation algorithm to generate a group signature and delegating a computing task to the cloud server; executing a signature verification algorithm to output a verification result; executing a computing algorithm only when a signature is valid to obtain a computing result and a correctness proof; executing a blind verification algorithm to verify whether the result; if the result is correct, executing a recovery algorithm; executing a member revocation algorithm to perform a member revocation function; and when there is a dispute over the delegation computing, executing an open algorithm to trace an identity of a specific member.

Abstract: The present invention relates to an amphiphilic material and an application thereof in preparation of a liposome, and in particular, the present invention provides an amphiphilic material, wherein the structure of the amphiphilic material is as follows. The amphiphilic material of the present invention is used for preparing drug-loaded nanoparticles to effectively enter cells such as tumor cells, thereby enhancing the therapeutic effect of the drug.

Abstract: Disclosed are a wristband and a wrist wearable device. The wristband includes a wristband body portion, a connecting portion, and a memory metal portion. One end of the wristband body portion is connected to the connecting portion, the connecting portion is connected to one end of a device body of a wrist wearable device, and another end of the wristband body portion is a free end. The memory metal portion is provided on the wristband body portion and has an arc-shaped memory state in a natural state, so that the wristband body portion is naturally maintained in an arc shape, and the wristband is naturally maintained in a wearing state.

Abstract: A waterborne polyurethane dispersion for the polyurethane foam of synthetic leather application, derived from (1) a prepolymer derived from the reaction of reactants comprising at least one aromatic isocyanate compound, an ethylene oxide-capped polyether triol, at least one polyether diol, and at least one polyester diol; (2) water; and (3) surfactant, is disclosed. The waterborne polyurethane dispersion can be used to prepare a synthetic leather product having superior wrinkle resistance, hand-feeling and peel strength. A synthetic leather article prepared with said waterborne polyurethane dispersion is also disclosed.

Abstract: The present disclosure discloses a flexible printed circuit board having a high reliability and includes an elastic arm, and a first end and a second end respectively extending from two ends of the elastic arm. A part of the elastic arm is provided with a thinning portion for changing stiffness distributions of the elastic arm during vibrating. The present disclosure also discloses a speaker using the flexible printed circuit board.

Abstract: A method for operating a burner, comprising supplying a controlled quantity of combustion air to the burner, supplying a controlled quantity of fuel to the burner, igniting the air-fuel mixture in the burner, determining a pressure pulsation value in the exhaust gas downstream of the burner and/or in an air path upstream of the burner, and adjusting the quantity of combustion air and/or the fuel depending on the pressure pulsation value. Further proposed are a computing unit and a computer program product for performing such a method.

Abstract: A method for controlling an input function, an apparatus for controlling an input function and a storage medium thereof are provided. The an input function control method is applied to a first device connected to a input device and includes: in response to detecting that an input device sharing function is enabled and an input event sent by the input device is monitored, intercepting the input event; and forwarding the intercepted input event to a second device connected with the first device.

Abstract: The present disclosure provides a data sending method and apparatus. The method may include: determining one or more second sending policies of one or more users at a target transmission time interval (TTI) based on data amount and one or more first sending policies of the one or more users, so that a second sending policy of a first user is different from a first sending policy of the first user. In addition, second energy consumption corresponding to the one or more second sending policies is less than first energy consumption corresponding to the one or more first sending policies, an occupied second time-frequency resource under the one or more second sending policies is greater than an occupied first time-frequency resource under the one or more first sending policies, and the second time-frequency resource is less than an available time-frequency resource provided by a base station at the target TTI.

Abstract: The present invention provides a carbonyl reductase mutant, preparation method and use thereof, and a preparation method of ethyl (R)-6-hydroxy-8-chlorooctanoate. The carbonyl reductase mutant is a carbonyl reductase with amino acid mutation; the carbonyl reductase comprises an amino acid sequence as set forth in SEQ ID NO: 2; the amino acid mutation includes E101V, F214R or E101V/F214R. In the present invention, by introducing mutations on the basis of the original carbonyl reductase sequence, the enzyme activity is improved, the stereoselectivity is improved, and ethyl (R)-6-hydroxy-8-chlorooctanoate can be obtained with high yield and high purity under relatively mild conditions, which reduces the production cost and is suitable for industrial production.

Abstract: A soft electrohydrodynamic actuator includes an actuating unit. The actuating unit includes a flexible pouch, a rod electrode, a dielectric fluid, an enameled wire, a hose and a planar flexible electrode. The inner cavity of the flexible pouch is provided with the rod electrode and filled with the dielectric fluid. The hose is hermetically connected to a side of the flexible pouch. The enameled wire is hermetically sleeved in the hose. One end of the enameled wire extends into the inner cavity of the flexible pouch through the hose and is electrically connected to an end of the rod electrode. The other end of the enameled wire is connected to a high-voltage positive electrode. The outer surface of the flexible pouch is coated with a layer of conductive soft material as the planar flexible electrode, or a water environment around the flexible pouch is used as the planar flexible electrode.

Abstract: In some embodiments, a method analyzes content of a video to generate a representation for a video that represents a relationship of a bitrate to a quality measurement for the video. A plurality of candidate points on the representation are selected. Then, the method selects a profile ladder from at least a portion of the plurality of candidate points. Each profile in the profile ladder is associated with a candidate point and the profile includes a corresponding bitrate and a quality measurement for the respective candidate point. The profile ladder is used for the video.

Abstract: The present disclosure discloses a method of controlling a wearable device, a wearable device and a computer-readable storage medium, the method of controlling a wearable device includes: scanning an eyeball of a user to determine a position of a point of attention the eyeball looks at; and adjusting at least one of an image rendering ratio of a display screen of the wearable device and an image rendering frequency of the display screen according to the position of the point of attention. The method of controlling a wearable device can reduce the power consumption of the wearable device.

Abstract: A sound device includes: a frame, a first vibration system, a magnetic circuit system, and a second vibration system. The magnetic circuit system includes a first magnetic conductive plate, a main magnetic steel, first side magnetic steels, second side magnetic steels, and second magnetic conductive plates. The first magnetic conductive plate includes a magnetic conductive plate body, side plates, and fixing plats. The main magnetic steel, the first side magnetic steels, and the side plates are enclosed to define a first magnetic gap. The second magnetic conductive plates are disposed around the magnetic conductive plate body at intervals and the second magnetic conductive plates are enclosed to define a second magnetic gap. A first voice coil is inserted into the first magnetic gap. A second voice coil is inserted into the second magnetic gap. Compared with the prior art, the sound device improves acoustic performance.

Abstract: The invention provides an ultra-small nano metal organic framework material and a preparation method thereof. The MOFs material is prepared from a low-cost metal source and organic ligands through solvothermal reaction, wherein metal ions in the metal source are at least two of ferric ions, bivalent copper ions or bivalent zinc ions; the ligands are at least two of terephthalic acid, 2-aminoterephthalic acid, meso-tetra (4-carboxyphenyl) porphin, 2-nitroterephthalic acid, 2-hydroxyterephthalic acid and trimesic acid; the solvent is formed by mixing ethanol and o-dichlorobenzene according to the volume ratio of (1-3):1. The particle size of the prepared MOFs material is 2-10 nm, and the prepared MOFs material is high in dispersity, specific surface area and activity. The MOFs material aqueous solution can generate a large amount of active oxygen in an ultrasonic environment, and has extremely high medical value.

Abstract: Disclosed are a method and system for measuring a flux-switching electric motor rotor angle on the basis of linear Hall. The method comprises: firstly, selecting four linear Hall sensors and respectively mounting same in four slots of a stator; a first linear Hall sensor is mounted in any slot of the stator, and a second linear Hall sensor is spaced apart from the first linear Hall sensor by N1 slots in a unified direction; N1 is an even number, and N1?ks/(2p); a third linear Hall sensor is spaced apart from the first linear Hall sensor by N2 slots; N2 is an odd number, and N2=(2k?1)s/(2p); and a fourth linear Hall sensor is spaced apart from the second linear Hall sensor by N2 slots; and then calculating an electric motor rotor angle according to voltage signals of the four linear Hall sensors.

Abstract: A voice controlled device comprises a housing, a dock, a coupling mechanism, and a microphone. The dock is configured to connect the housing to a plurality of host appliances. The coupling mechanism is configured to receive an identification value indicative of docking between the voice controlled device and a currently connected host appliance of the plurality of host appliances. The microphone is configured to receive one or more voice inputs for the currently connected host appliance. A command is provided based on the one or more voice inputs and the identification value.

Abstract: The present disclosure belongs to the technical field of mortar, and in particular, to three-dimensional (3D) printed mortar and a preparation method therefor, and a 3D printing method for mortar. The mortar includes: 50-70 parts of ordinary Portland cement; 6-14 parts of sulphoaluminate cement; 2-20 parts of slag powder; 18-22 parts of fly ash; 0.25-2 parts of accelerator; 0.05-0.45 parts of cellulose ether; 0.1-0.3 parts of naphthalene series water reducer; 0.4-0.6 parts of redispersible rubber powder; 0.1-0.5 parts of defoamer; 0.1-0.5 parts of early strength agent; 0.4-1.0 part of polypropylene fiber; 100-120 parts of fine aggregate; and 30-40 parts of water. A 3D printing speed of the mortar of the present disclosure can be stably kept within 150-200 mm/s by using the above raw materials at a reasonable ratio.