Abstract: A smart conference room system is provided. The smart conference room system includes an intelligent conference interactive panel including one or more processors configured to convert user input into a conference information, and a memory configured to store the conference information. The intelligent conference interactive panel is configured to transmit conference information to one or more terminal devices. The one or more terminal devices are configured to perform a controllable operation based on the conference information transmitted to the one or more terminal devices.

Abstract: Disclosed is a negative electrode material and a preparation method therefor. The negative electrode material is a core-shell structure, and comprises a core layer formed by hard carbon, and a first carbonized layer, a carbon powder layer and a second carbonized layer which are sequentially coated at the outer side of the core layer. Further disclosed are a negative electrode plate prepared by the negative electrode material, and a sodium ion battery. The negative electrode material of the present disclosure can effectively improve the conductivity of a hard carbon material, thereby facilitating improvement of the performance such as initial Coulombic efficiency and cycle life of the sodium ion battery.

Abstract: The disclosure relates to the technical field of batteries, and discloses a cathode material and a preparation method thereof, a cathode plate and an O3-type layered sodium ion battery. The chemical formula of the cathode material is NaM1-x-y-zNixFeyMnzO2, wherein M comprises a first metal element, and the first metal element has at least one f electron orbital. Ni, Fe and Mn elements in the cathode material are elements containing a d electron orbital. By doping the element M, on the one hand, the f electron orbital and the d electron orbitals are mutually entangled, properties of the cathode material are synergistically improved, so that the structure and air stability of the material are improved; and on the other hand, interaction of all elements in the material can be facilitated, so that ions can move away from original positions to generate vacancies, ion diffusion channels of sodium ions are enlarged, and the rate capability of the material is improved.

Abstract: The present disclosure provides a parking process display method and device, and a vehicle. The method comprises: creating an image used for reflecting a scene where a vehicle is located; determining a display region of the image, and displaying the display region; identifying parking spots in the image; when at least part of a region of a target parking spot among all the parking spots and/or of a vehicle is located outside the display region, adjusting the position of the center of the display region of the image with respect to the origin of a preset coordinate system, so that the whole regions of the vehicle and the target parking spot are located in the display region.

Abstract: The present disclosure relates to an automatic detecting device for detecting flaws on a surface of a camshaft in the field of detecting device. The automatic detecting device includes a framework, which is provided with a working platform, an elevator mechanism, a first rotating elevator mechanism and a second rotating elevator mechanism. The working platform is rotatably connected with the rotating platform. The working platform is provided with a first working position; a second working position, a third working position and a fourth working position. The rotating platform is provided with a plurality of locating members. The locating member is configured for placing a test piece. The working platform is provided with an overturning mechanism, a first visual module and a second visual module.