Abstract: The present disclosure relates to the field of new materials, and aims at providing an A-site high-entropy nanometer metal oxide with high conductivity, and a preparation method thereof. The metal oxide has molecular formula of Gd0.4Er0.3La0.4Nd0.5Y0.4)(Zr0.7, Sn0.8, V0.5)O7 and is a powder, and has microstructure of the metal oxide as a square nanometer sheet with a side length of 4-12 nm and a thickness of 1-3 nm. Compared with an existing high-entropy oxide, the product in the present disclosure has high conductivity, and can be well applied to a conductive alloy, an electrical contact composite material, a conductive composite material, a multifunctional bio-based composite material, a conductive/antistatic composite coating and the like.

Abstract: The present disclosure relates to the field of new materials, and aims at providing an A-site high-entropy nanometer metal oxide with high conductivity, and a preparation method thereof. The metal oxide has molecular formula of Gd0.4Er0.3La0.4Nd0.5Y0.4)(Zr0.7, Sn0.8, V0.5)O7 and is a powder, and has microstructure of the metal oxide as a square namometer sheet with a side length of 4-12 nm and a thickness of 1-3 nm. Compared with an existing high-entropy oxide, the product in the present disclosure has high conductivity, and can be well applied to a conductive alloy, an electrical contact composite material, a conductive composite material, a multifunctional bio-based composite material, a conductive/antistatic composite coating and the like.

Abstract: The present disclosure relates to the field of new materials, and aims at providing a two-dimensional high-entropy metal oxide assembly with high thermal conductivity and a preparation method thereof. The two-dimensional high-entropy metal oxide assembly with the high thermal conductivity has a molecular formula of (Co0.3La0.6Er0.6Y0.7Mn0.4Ga0.4)O4. The two-dimensional high-entropy metal oxide assembly with the high thermal conductivity is in a short fiber shape with a length-diameter ratio of the short fiber of 5 to 7 and has a cross section of a regular triangle with the side length of the regular triangle of 100 to 300 nm. The present disclosure achieves one-dimensional high thermal conductivity of metal oxide assembly by means of orderly assembling of high-entropy oxide in the direction perpendicular to nanosheets. Meanwhile, the assembly enables uniform distribution of heterogeneous elements in the two-dimensional plane during the preparation process.

Abstract: The present disclosure relates to the field of new materials, and aims at providing an A-site high-entropy nanometer metal oxide with high conductivity, and a preparation method thereof. The metal oxide has molecular formula of Gd0.4Er0.3La0.4Nd0.5Y0.4)(Zr0.7, Sn0.8, V0.5)O7 and is a powder, and has microstructure of the metal oxide as a square namometer sheet with a side length of 4-12 nm and a thickness of 1-3 nm. Compared with an existing high-entropy oxide, the product in the present disclosure has high conductivity, and can be well applied to a conductive alloy, an electrical contact composite material, a conductive composite material, a multifunctional bio-based composite material, a conductive/antistatic composite coating and the like.

Abstract: A sewage/wastewater biological treatment system—sewage (wastewater) synergistic treatment acceleration device, which includes four components of a reaction assembly, a signal transmission assembly, a control assembly, and a housing carrying assembly. The reaction assembly can realize the colonization/proliferation of functional microorganisms, participate in the interface electron transfer between the electrode-microbe-sewage as an electron donor/receptor and electrode interface of the (bio)electrochemical reaction, and optimize the flow characteristics in the sewage/wastewater treatment system. The signal transmission assembly enables the conduction of applied voltage and real-time signal acquisition and transmission of key parameters. The monitoring assembly implements intelligent controllability of the present invention. The housing carrying assembly enables integrated assembly of single device and multi-device serial/parallel operation assembly.

Abstract: A sewage/wastewater biological treatment system-sewage (wastewater) synergistic treatment acceleration device, which includes four components of a reaction assembly, a signal transmission assembly, a control assembly, and a housing carrying assembly. The reaction assembly can realize the colonization/proliferation of functional microorganisms, participate in the interface electron transfer between the electrode-microbe-sewage as an electron donor/receptor and electrode interface of the (bio)electrochemical reaction, and optimize the flow characteristics in the sewage/wastewater treatment system. The signal transmission assembly enables the conduction of applied voltage and real-time signal acquisition and transmission of key parameters. The monitoring assembly implements intelligent controllability of the present invention. The housing carrying assembly enables integrated assembly of single device and multi-device serial/parallel operation assembly.

Abstract: The present application provides a video encoding method, decoding method and devices thereof. The video encoding device includes a video capturing unit for capturing a video image; a processing unit for performing compression encoding on a background image in the video image to obtain video compression data and for structuralizing a foreground moving object in the video image to obtain foreground object metadata; a data transmission unit for transmitting the video compression data and the foreground object metadata, wherein the foreground object metadata is data that stores video structuralized semantic information. In the case that the moving objects are large in quantity or in size, the amount of video data can be effectively reduced and the limitation of network bandwidth during transmission can be mitigated.

Abstract: The disclosure discloses a method, device and system for target tracking. Wherein, the method for target tracking includes that: Global Positioning System (GPS) information of a target object monitored by tracking equipment is acquired (S102); Pan/Tilt/Zoom (PTZ) coordinate information corresponding to the GPS information of the target object is obtained according to a pre-stored conversion relationship between GPS information and PTZ coordinate information (S104); and the tracking equipment is regulated to control the tracking equipment to monitor the target object according to the PTZ coordinate information of the target object (S106). The problem of inaccuracy of a monitoring result of a method for monitoring a tracking target in the conventional art is solved.

Abstract: The present application relates to the field of monitoring, and discloses a method and a device for obtaining evidences for illegal parking of a vehicle. In the method for obtaining evidences of the present application, a correspondence relationship between shooting positioning parameters of a first camera and a second camera is preset. The method for obtaining evidences comprises: taking a first photo of an illegally parked vehicle using the first camera and obtaining a current first shooting positioning parameter of the first camera; according to the correspondence relationship, calculating a second shooting positioning parameter of the second camera corresponding to the first shooting positioning parameter and controlling the second camera to take a second photo with the second shooting positioning parameter. Thereby the photos of the head and rear of the illegally parked vehicle are obtained simultaneously as the evidences for illegal parking for penalty.

Abstract: The present application relates to the field of monitoring, and discloses a method and a device for obtaining evidences for illegal parking of a vehicle. In the method for obtaining evidences of the present application, a correspondence relationship between shooting positioning parameters of a first camera and a second camera is preset. The method for obtaining evidences comprises: taking a first photo of an illegally parked vehicle using the first camera and obtaining a current first shooting positioning parameter of the first camera; according to the correspondence relationship, calculating a second shooting positioning parameter of the second camera corresponding to the first shooting positioning parameter and controlling the second camera to take a second photo with the second shooting positioning parameter. Thereby the photos of the head and rear of the illegally parked vehicle are obtained simultaneously as the evidences for illegal parking for penalty.

Abstract: The present application provides a video encoding method, decoding method and devices thereof. The video encoding device includes a video capturing unit for capturing a video image; a processing unit for performing compression encoding on a background image in the video image to obtain video compression data and for structuralizing a foreground moving object in the video image to obtain foreground object metadata; a data transmission unit for transmitting the video compression data and the foreground object metadata, wherein the foreground object metadata is data that stores video structuralized semantic information. In the case that the moving objects are large in quantity or in size, the amount of video data can be effectively reduced and the limitation of network bandwidth during transmission can be mitigated.

Abstract: The disclosure discloses a method, device and system for target tracking. Wherein, the method for target tracking includes that: Global Positioning System (GPS) information of a target object monitored by tracking equipment is acquired (S102); Pan/Tilt/Zoom (PTZ) coordinate information corresponding to the GPS information of the target object is obtained according to a pre-stored conversion relationship between GPS information and PTZ coordinate information (S104); and the tracking equipment is regulated to control the tracking equipment to monitor the target object according to the PTZ coordinate information of the target object (S106). The problem of inaccuracy of a monitoring result of a method for monitoring a tracking target in the conventional art is solved.

Abstract: A method and system for people flow statistics is disclosed in the invention, wherein said method comprises: multi-types of classifiers connected in parallel are used to perform the human head detection in the current image, the respective human heads in the current image are determined; the respective determined human heads are tracked to form the human head target movement tracks; and the people flow is counted at the direction of the human head target movement track. It can be seen, a plurality of classifiers connected in parallel are used in the invention, multi-types of human head targets, such as dark colored hair, light colored hair and caps of various colors, and the like, can be detected simultaneously.

Abstract: A method and system for people flow statistics is disclosed in the invention, wherein said method comprises: multi-types of classifiers connected in parallel are used to perform the human head detection in the current image, the respective human heads in the current image are determined; the respective determined human heads are tracked to form the human head target movement tracks; and the people flow is counted at the direction of the human head target movement track. It can be seen, a plurality of classifiers connected in parallel are used in the invention, multi-types of human head targets, such as dark colored hair, light colored hair and caps of various colors, and the like, can be detected simultaneously.

Abstract: Disclosed is a method for forming a protective coating comprising contacting a carbon material with a metal surface, heating the carbon material and metal to allow at least a portion of the carbon material to dissolve in the metal, diffuse across a portion of the metal surface, or a combination thereof, and then cooling the metal and carbon material to form a metal having a protecting carbon coating disposed on a surface thereof, wherein the protective coating comprises graphene, multi-layer graphene, or a combination thereof. Also disclosed are a method for inhibiting corrosion comprising forming a layer of graphene on at least a portion of a metal surface; a metal having a surface, wherein at least a portion of the surface comprises a protective carbon coating comprising graphene, multi-layer graphene, or a combination thereof; and a passivation coating comprising a graphene, multi-layer graphene, or a combination thereof.