Abstract: An updating method including: acquiring, by an active update node, update information from a server; and acquiring or receiving, by a passive update node, the update information from the active update node through a local network. By using the update method and system, end node and electronic device provided in the present disclosure, an active update node of a plurality of end nodes in the same local network acquires update information from a server, and a passive update node acquires the update information from the active update node, thereby reducing the number of end nodes acquiring the update information from the server, and reducing the burden of the cloud.

Abstract: A method for noninvasively measuring hemodynamic variables of a person includes physically configuring a sensor to measure the pulse of a person. The sensor generates a pulse waveform indicative of the pulse of the person. A processor obtains the pulse waveform from the sensor and the processor determines a reflection coefficient and reflection delay between an incident and a reflected wave, from which the processor determines the hemodynamic variables of the person from the reflection coefficient and the reflection delay.

Abstract: A touchpad apparatus includes a housing, a movable member, and a touchpad substrate. The housing includes a first stepped portion provided with a plurality of steps. The steps gradually ascend along a rotation direction around an axis. The movable member is disposed on the housing and is configured to rotate relative to the housing around the axis. The movable member includes a first support portion selectively pressing against one of the plurality of steps. The touchpad substrate is configured to press against one end of the movable member away from the housing. By adjusting a distance between the movable member and the touchpad substrate, a pressing stroke of the touchpad is adjusted, so that a touch force is changed.

Abstract: The present disclosure discloses a method, system and device for replaying movement of a robot. In an embodiment, the method includes a controller receiving a log file in which information about a movement of the robot is recorded; the controller obtaining information of position points passed by the robot when performing the movement based on the log file; and the controller sending the information of position points passed by the robot when performing the movement to a replaying device, to enable the replaying device to replay the movement of the robot according to the information of position points. The technical solutions of the present disclosure may increase the accuracy of locating where the problem is when errors or something unexpected happened to the robot.

Abstract: Doherty power amplifiers and devices are described with a low voltage driver stage in a carrier-path and a high voltage driver stage in a peaking-path. In an embodiment a Doherty power amplifier has a carrier-path driver stage transistor configured to operate using a first bias voltage at the driver stage output, and a final stage transistor configured to operate using a second bias voltage at the final stage output. A peaking-path driver stage transistor is configured to operate using a third bias voltage at the driver stage output, and a final stage transistor electrically coupled to the driver stage output of the peaking-path driver stage transistor is configured to operate using a fourth bias voltage at the final stage output, wherein the third bias voltage is at least twice as large as the first bias voltage.

Abstract: Blockchain-based file handling is provided by receiving a data file from a user device, storing the data file to local storage of the blockchain peer, generating a file identifier of the data file, providing the file identifier to the user device, storing the file identifier to a synchronized ledger of the blockchain network, where the synchronized ledger tracks access to the data file, and distributing data of the data file to one or more other blockchain peers of the blockchain network.

Abstract: An auxiliary sensing method and system based on sensory substitution includes: establishing a discrete horizontal plane included angle and a normal vector included angle in three-dimensional space as well as response functions corresponding to different discrete distances, and establishing an acoustic coding library of an object; obtaining a surrounding environmental video; obtaining object information and category of current environment; establishing a three-dimensional sound field of the object according to the image information, the object information and the three-dimensional coordinate information obtained in combination with the acoustic coding library of the object; and adjusting, for objects of different categories, the three-dimensional sound field of each object according to movement information and variations of images, and playing the three-dimensional sound field of each object in real time.

Abstract: A method for selection of a core network. The method which can be performed by a first network node comprises receiving a message for a terminal device from a second network node. The message can enable the first network node to determine a category of the terminal device. The method further comprises selecting a core network for the terminal device based at least in part on the category of the terminal device. The terminal device can be served by a dedicated core network selected for the terminal device adaptively, so that network configuration and resource efficiency can be improved.

Abstract: An image processing method, comprising: in response to a request instruction of an image application function, transferring acquired emission parameters to the emission driver module, and controlling the infrared camera to transmit a trigger signal to the emission driver module, when detecting the request instruction of the image application function; controlling the structured-light emitter to emit a laser by the emission driver module, and transmitting a synchronization signal to the infrared camera by the emission driver module, in response to the trigger signal; controlling the infrared camera to collect speckle images of a to-be-detected object, in response to the synchronization signal; controlling the infrared camera to transfer the speckle images to the image processing module; controlling the image processing module to acquire depth images of the to-be-detected object by performing depth calculation on the speckle images, and realize the image application function based on the depth images.

Abstract: Anti-tumor platinum drug mineralized protein nanoparticles and a preparation method therefor are disclosed. The anti-tumor platinum-based drug mineralized protein nanoparticles include a platinum drug and a protein. The protein is one or more selected from the group consisting of albumin, transferrin, hemoglobin, and low-density lipoprotein. The platinum drug is cisplatin, iodoplatin, bromoplatin, oxaliplatin, carboplatin, or nedaplatin. A drug loading of the anti-tumor platinum-based drug mineralized protein nanoparticles is 1% to 50%.

Abstract: A system for monitoring rock damage in deep engineering environment includes an acoustic emission sensor assembly and an acoustic emission amplifier assembly. The assemblies are mounted on a rock mechanics test system. The acoustic emission sensor clamp includes a coupling screw, as well as a clamp cover, a clamp cylinder, and a coupling panel threadedly connected in sequence. The acoustic emission amplifier assembly includes an acoustic emission amplifier, an upright column having a guide rail, a lifting support plate, and a support plate lifting oil cylinder. Additionally, an evaluation method based on acoustic emission tempo-spatial evolution laws is presented. According to the properties of acoustic emission, fractal characteristics of damage evolution processes of rock test pieces are analyzed and the relationship between stress, energy and fractal dimension in the whole process of tensile deformation damage of the rock test pieces is obtained.

Abstract: Provided are a camera module, a control method, and an electronic device. The camera module includes protective glass, a light-emitting component, and a light-receiving component. The protective glass is configured to shield and protect the light-emitting component and the light-receiving component. The protective glass includes a glass substrate and a glass groove. The glass groove is made on a glass surface of the glass substrate.

Abstract: In a convolutional neural network (CNN) using an encoder-decoder structure for image segmentation, a multi-scale context aggregation module receives an encoded final-stage feature map from the encoder, and sequentially aggregates multi-scale contexts of this feature map from a global scale to a local scale to strengthen semantic relationships of contexts of different scales to improve segmentation accuracy. The multi-scale contexts are obtained by computing atrous convolution on the feature map for different dilation rates. To reduce computation, a channel-wise feature selection (CFS) module is used in the decoder to merge two input feature maps. Each feature map is processed by a global pooling layer followed by a fully connected layer or a 1×1 convolutional layer to select channels of high activation. By subsequent channel-wise multiplication and elementwise summation, only channels with high activation in both feature maps are preserved and enhanced in the merged feature map.

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: A plastic panel includes a middle portion. Two opposing sides of the middle portion are defined as a first engaging portion and a second engaging portion, respectively. Each engaging portion has a concave portion, a convex portion, a protruding portion and a recess portion. Two adjacent plastic panels can be firmly connected through their concave portions, convex portions, protruding portions and recess portions. Besides, two adjacent plastic panels facing up or facing down can be engaged and connected with each other.

Abstract: The present invention relates to a method for constructing a nanodrug with adhesion in small intestine, including activating a basic amino acid with a small molecular catalyst, adding a polysaccharide solution and reacting to obtain an amphiphilic polymer; then adding a drug solution and mixing uniformly, to obtain drug-loaded nanoparticles including a hydrophilic portion that is the basic amino acid and a hydrophobic portion that is the polysaccharide and drug, wherein the drug has radioprotective effect or can inhibit ionizing radiation-induced cell death; and adding the drug-loaded nanoparticles to a dopamine solution to obtain a nanodrug including the basic amino acid and polydopamine on the surface after the reaction. The present invention provides an oral nanodrug with adhesion in intestinal tract, and the nanodrug has good biocompatibility, adhesion in small intestine and mucus barrier penetration ability, and can withstand the acid and alkali environment in the gastrointestinal tract.

Abstract: The present invention discloses a quantitative detection method of multiple metabolic components in a biological sample and a metabolic chip used in the method. The detection method includes performing derivatization treatment on the biological sample and then detecting the derivatized biological sample by liquid chromatography-mass spectrometry. During derivatization treatment, 3-nitrophenylhydrazine is used as a derivatization reagent, and 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide is used as a derivatization reaction catalyst. According to the detection method of the present invention, high-sensitivity detection can be achieved, multiple metabolic components of different magnitudes can be detected, the operation is simple and fast, and the method is applicable to clinical detection and scientific research examination.

Abstract: An antibody targeting CD47, a preparation method therefor and uses thereof. A novel mouse or human-mouse chimeric antibody targeting CD47. A method for preparing the monoclonal antibody. The monoclonal antibody of the present invention can bind CD47 antigen with high specificity, has high affinity and significant activities, such as anti-tumor activity.

Abstract: The present invention provides a recombinant viral vector, an immunogenic composition containing the same, and the use thereof. The recombinant viral vector comprises a polynucleotide encoding a fusion peptide of CD4 helper T cell epitopes, the epitope fusion peptide comprising a cytomegalovirus epitope and/or an influenza virus epitope. The epitope fusion peptide and the recombinant viral vector provided by the present invention can improve the level of cellular immune response to a target immunogen, particularly to a weak immunogen, and overcome the immune tolerance of immune system to an antigen, particularly to a tumor antigen or an infection-related antigen. The products of the present invention are suitable for enhancing the efficacy of vaccines.

Abstract: The present disclosure discloses a horizontal-axis ocean current power generation device for an underwater vehicle. The power generation device is disposed in a groove of a rotary body of the underwater vehicle, and includes an undercarriage unit, a yawing unit, and a power generation unit. The undercarriage unit can realize elevation and descent of the entire power generation device, and the power generation unit is capable of realizing arbitrary rotation within 360° in a horizontal plane through the yawing unit. The power generation device can actively yaw based on change of an ocean current direction to perform an incident flowing function. The power generation unit respectively drives an outer shaft and an inner shaft to rotate through a front blade and a rear blade that rotate in opposite directions, so as to drive inner and outer rotors of a motor, thereby cutting magnetic induction to generate electric power.