Abstract: The present application relates to a network-on-chip data processing method. The method is applied to a network-on-chip processing system, the network-on-chip processing system is used for executing machine learning calculation, and the network-on-chip processing system comprises a storage device and a calculation device. The method comprises: accessing the storage device in the network-on-chip processing system by means of a first calculation device in the network-on-chip processing system, and obtaining first operation data; performing an operation on the first operation data by means of the first calculation device to obtain a first operation result; and sending the first operation result to a second calculation device in the network-on-chip processing system. According to the method, operation overhead can be reduced and data read/write efficiency can be improved.

Abstract: An Android penetration method and device for implementing silent installation based on accessibility services. The method includes: acquiring a second target application by adding a load program to a first target application and adding penetration permissions using an Android decompilation technology; and implementing silent installation of the second target application using an accessibility service technology.

Abstract: Disclosed is a system for classifying encrypted traffic based on a data packet. The system includes a traffic capture module, a traffic analysis module, and a traffic classification module. The system collects data packets from a network flow to construct a machine learning model, so as to classify encrypted traffic and identify normal traffic and malicious traffic. In a process of constructing a feature matrix, basic spatial-temporal features, header features, load features, and statistical features are obtained. In addition, behavioral features of the data packets are obtained and used to demonstrate differences between the normal traffic and the malicious traffic. Moreover, the present disclosure focuses on a difference between different versions of an encryption protocol, especially a transport layer security (TLS) protocol, and introduces the difference into a model for analysis, so that the system classifies encrypted traffic in a more efficient manner.

Abstract: A value chain knowledge discovery method under personalized customization is provided. The method comprises the following steps: defining a value topic for a given domain text, and extracting a value anchoring seed word; constructing a value semantic topological space according to the value anchoring seed word; expanding the value anchoring seed word to obtain an initial topic anchoring word set; updating the initial topic anchoring word to obtain an optimized topic anchoring word set; obtaining a multi-cluster net structure representation of a value semantic text by taking the optimized topic anchoring word as a constraint; and anchoring and constraining a plurality of cross-domain texts to construct a value chain knowledge graph.

Abstract: The present invention provides a hybrid-power-driven underwater robot, including a robot body and a releasing and recovering device, wherein a first transmission cavity is formed in the releasing and recovering device, a seawater removing mechanism and an electric take-up reel are arranged inside the first transmission cavity, a cable is arranged on the electric take-up reel, the cable extends out of the first transmission cavity, and the robot body is fixedly connected to one end of the cable; and a tail fin is movably connected to the robot body, an acceleration mechanism is further arranged on the robot body, a second transmission cavity is formed in the robot body, a driving mechanism for driving the tail fin and the acceleration mechanism is arranged inside the second transmission cavity, and the driving mechanism can drive the tail fin separately or drive the acceleration mechanism separately.

Abstract: Disclosed are apparatus, method and system for monitoring mold based on weak electrical signals. The apparatus comprises a mold collector, a power supply, a trans-impedance amplifier, and an analog-to-digital converter, wherein the mold collector is smeared with a trophoplasm, and a substrate of the mold collector has electrical conductivity, the power supply is used for applying a voltage to the substrate of the mold collector, the trans-impedance amplifier is used for amplifying a weak current generated from the substrate of the mold collector to a voltage signal, and the analog-to-digital converter is used for converting the voltage signal amplified by the trans-impedance amplifier into a digital signal for determining the quantity of molds.

Abstract: A revocable lightweight group authentication method and system for an edge controller is described here. When the edge controller needs to be registered, an edge server generates a private key of the edge controller and sends the private key to the edge controller, and meanwhile adds the edge controller to a group list of the edge server; the edge server updates a certificate of the edge controller, adds the certificate to a certificate list of the edge server and sends the certificate to the edge controller so that the edge controller updates the private key according to the updated certificate; and then the edge controller generates a signature according to the updated private key, and sends the signature to the edge server so that the edge server authenticates the edge controller after determining that the signature meets preset requirements.

Abstract: A flow focusing type one-step double emulsion droplet parallel generation device and method. The device comprises a fluid injection module, a liquid droplet generation module, a liquid droplet surface solidification module and a liquid droplet collection module, wherein the fluid injection module is used for conveying fluid of each phase to the liquid droplet generation module; and the liquid droplet generation module comprises a fluid distribution functional area, a liquid droplet preparation functional area and an auxiliary functional arca, wherein the liquid droplet distribution functional area is used for conveying the fluid of each phase into a channel of the fluid of each phase corresponding to the liquid droplet preparation functional area, and the fluid of each phase is gathered at the same point in a flow focusing structure and then is broken, and a fluid of an outer phase covers the fluid of the middle phase.

Abstract: The present invention discloses a modular underwater robot and a control method therefor. The modular underwater robot includes support plates, a first chamber, a second chamber, and a power assembly, where the supporting plates are stacked, and front end edges and rear end edges of the support plates are respectively provided with a first hollow portion and a second hollow portion; the first chamber is disposed in the first hollow portion; the second chamber is disposed in the second hollow portion, and the second chamber and the first chamber are in a same horizontal position; and the power assembly includes fixed vector thrusters and vertical thrusters. As such, the fixed vector thrusters can enable the modular underwater robot to move forward, backward, or rotatably, so that flexibility of the modular underwater robot can be improved.

Abstract: An APT organization identification method, system and storage medium based on a stacking ensemble are provided, the method comprising: using a TF-IDF algorithm combined with an n-gram to extract and vectorize behavior features from malware samples to form a malicious behavior vector feature set; based on the malicious behavior vector feature set, calculating correlations between features and chi-square values between the features and categories, performing screening twice on the malicious behavior vector feature set to obtain an improved low-dimensional feature subset data; constructing a multi-model fusion stacking ensemble, learning an APT organization identification model, using the APT organization identification model to perform an identification on new ATP attacks.

Abstract: A method for preparing a core-shell structure polymer magnetic nanosphere with a high Cr (VI) adsorption capacity includes: adding Fe3O4 powder into a mixed solution of water and ethanol, dispersing Fe3O4 powder in the solution evenly by ultrasound, sequentially adding resorcinol and formaldehyde into the suspension to adjust a pH, stirring and reacting to obtain Fe3O4@RF evenly dispersed in a chitosan solution, dropwise adding the prepared suspension into a mixed solution of paraffin and span 80, stirring for a period of time, adding a glutaraldehyde aqueous solution, stirring and reacting to obtain a magnetic chitosan nanosphere. The magnetic chitosan nanosphere prepared may be applied to adsorbing Cr (VI) in a water solution. Not only the magnetic chitosan nanospheres prepared has a high adsorption capacity for Cr (VI), but also can be quickly separated by an external magnetic field after adsorption.

Abstract: A modular mechanical arm of an underwater pile foundation structure includes a modular interface disposed at one end of the transmission arm rod, a mechanical arm connecting part disposed at the other end of the transmission arm rod. The mechanical arm connecting part is separately provided with two arm frames, each of the arm frames comprises an inner arm frame and an outer arm frame, the inner arm frame and the outer arm frame are coupled by a joint, and a soft moving and cleaning part is disposed on an inner side of each of the arm frames; the modular interface is coupled with an underwater UAV interface to transmit current and a control signal, a waterproof steering gear is built in the transmission arm rod to receive the control signal.

Abstract: An underwater robot based on a variable-size auxiliary drive and a control method thereof includes a variable-size auxiliary drive module and a main control system. The variable-size auxiliary drive module includes a first variable-size silo, at least two first variable-size units and at least two first gasbags. The first variable-size silo has a first accommodating space with at least two first accommodating subspaces. Each of the first variable-size units includes a first micro push rod motor, a first push rod, a first push plate and a first gas guide tube. The first micro push rod motor, the first push rod and the first push plate are accommodated in the corresponding first accommodating subspace. The first push rod is fixed to the first push plate. one of the first gas guide tubes correspondingly communicates with one of the first accommodating subspaces and one of the first gasbags.

Abstract: Disclosed in the present invention is a new triptolide derivative as shown in formula (I). Also disclosed in the present invention are a preparation method for the compound and the medical use thereof in preparation of anti-cancer drugs. Triptolide acrylate of the present invention and a pharmaceutically acceptable salt thereof have anti-cancer activity, and after animal in-vivo experiments, can effectively inhibit tumor growth in animals. A plurality of in-vitro experiments proves that same can significantly increase the protein expression quantity of p53, promote the apoptosis of tumor cells, effectively inhibit the growth of the tumor cells, and have the effect of inhibiting metastasis of cancer cells. More importantly, the toxicity of the compound to normal cells is less than that of triptolide.

Abstract: A multifunctional light-duty soft robot includes paired wheel power mechanisms, soft contact mechanisms, buffer spring mechanisms and a middle frame deformation mechanism. Each of the paired wheel power mechanisms includes a wheel frame and a wheel rotatably connected thereto. The wheel frame is internally provided with a power mechanism connected with a wheel axis of the wheel. Each of the soft contact mechanisms includes a flexible cantilever and a soft transmission belt. The two paired wheel power mechanisms are respectively arranged at two ends of each of the flexible cantilevers. The wheel on one of the paired wheel power mechanisms is connected with the wheel on the other of the paired wheel power mechanisms. The buffer spring mechanisms are arranged between the wheel frames and the wheels. The middle frame deformation mechanism includes a connection unit and two movable units rotatably connected to the connection unit respectively.

Abstract: An adsorbent for wastewater treatment includes titanium hexametaphosphate; the titanium hexametaphosphate is mainly prepared from hexametaphosphate and titanium salt. The adsorbent is an aggregate of micron or nanometer particles, with a large surface area and a good adsorption performance. The adsorbent, as a wastewater treatment agent, may effectively remove thallium contaminants in various water bodies such as underground water, surface water, chemical wastewater and mine wastewater at a removal rate of 99.8%; and the adsorbent has a good removal capability for heavy metals in water such as cadmium, plumbum, copper, stibium, cesium and uranium. The adsorbent has a wide applicable PH value range, and especially has a good adsorption capacity, stability and heat resistance under acidic conditions.

Abstract: A global and local binary pattern image crack segmentation method based on robot vision comprises the following steps: enhancing a contrast of an acquired original image to obtain an enhanced map; using an improved local binary pattern detection algorithm to process the enhanced map and construct a saliency map; using the enhanced map and the saliency map to segment cracks and obtaining a global and local binary pattern automatic crack segmentation method; and evaluating performance of the obtained global and local binary pattern automatic crack segmentation method. The present application uses logarithmic transformation to enhance the contrast of a crack image, so that information of dark parts of the cracks is richer. Texture features of a rotation invariant local binary pattern are improved. Global information of four directions is integrated, and the law of universal gravitation and gray and roundness features are introduced to correct crack segmentation results, thereby improving segmentation accuracy.

Abstract: Use of ginkgolide A in the treatment of autism. Specifically, the present invention relates to use of ginkgolide A, a stereoisomer thereof, a crystal form thereof, a pharmaceutically acceptable salt thereof, a derivative thereof, an extract comprising ginkgolide A, or a combination thereof in the preparation of a pharmaceutical composition for the treatment of autism. The experiments have demonstrated that ginkgolide A can significantly alleviate the behavioral defects of autism, and ginkgolide A has the advantages of small dosage and high safety when treating autism, and is very suitable as a common medicine for the treatment of autism.

Abstract: This invention provides a strengthening and tumor eliminating traditional Chinese medicine composition, its preparation method and application, which specifically relate to the technical field of the treatment of intermediate and advanced stage and postoperative malignant tumor, wherein the strengthening and tumor eliminating traditional Chinese medicine composition comprises: 8-30 parts of Radix codonopsis, 5-30 parts of Rhizoma atractylodis Macrocephalae, 5-30 parts of Poria cocos, 5-30 parts of Pseudobulb of Appendiculate cremastra, 5-30 parts of Scutellaria barbata, 5-30 parts of Sarcandra glabra, 3-30 parts of peach kernel, 2-30 parts of Ligustrum lucidum, 5-30 parts of Eclipta and 1-20 parts of licorice. This invention also provides a preparation method of the described strengthening and tumor eliminating traditional Chinese medicine composition.

Abstract: A method for certificate transaction validation of a blockchain-based resource public key infrastructure aims to avoid security threats caused by conflicts or illegal transactions during transactions and improve security. A technical solution is as follows: constructing a resource public key infrastructure RPKIB system composed of a resource issuer, a resource transaction application client, a resource receiver, a blockchain network and a validation node; designing operations of a resource certificate and route origin authorization ROA as transactions, submitting operations of various resource transactions initiated by a resource issuer as transactions to the blockchain network, running, by the validation node, a smart contract to verify the transactions, and distinguishing whether the operations are malicious behaviors or normal operations of an authority.