Abstract: Provided are a noxious weed identification method based on a satellite, a UAV, and near-ground images, and a device, which relates to the technical field of image identification. The method includes the following steps: inputting a current region-scale satellite remote sensing image into a region-scale noxious weed identification model, to obtain a region-scale noxious weed abundance identification result. The region-scale noxious weed identification model is obtained through training based on a historical region-scale feature data set and a predicted plot-scale noxious weed abundance identification result; the historical region-scale feature data set is a data set obtained by sifting historical region-scale satellite remote sensing images based on a historical quadrat-scale feature variable; and the historical quadrat-scale feature variable is a feature obtained by processing a historical near-ground hyperspectral image of a target region.

Abstract: A polarization-maintaining dispersion-compensation microstructure fiber includes an inner core, an air-hole array in area 1 and an air-hole array in area 2. The air holes in the area 1 and 2 air-hole arrays are arranged in square lattice. The air-hole arrays in areas 1 and 2 are dislocated by half-layer along y-direction. In area 1, 2 air holes in the middle row are omitted to form a solid area as the inner core. 2 outer cores are located in 2 sub-areas of area 2, and each outer core contains 2 air holes. The long (or short) axes of the inner and outer cores are perpendicular, and the center points of the inner core and the two outer cores are located on the x-axis.

Abstract: A single-core polarization-maintaining dispersion compensation micro-structured optical fiber comprises a fiber core, a first layer of air holes surrounding the fiber core, the cladding defects on the x-axis, the cladding defects on the y-axis, and the cladding. The air holes in the fiber cross section are arranged in the equilateral triangle lattice. Three consecutive air holes are omitted to form a solid area. This solid area is the fiber core. There are two cladding defects along the x-axis. Their centers are respectively located at the two vertices of the hexagon on the x-axis, which is formed by the fourth air hole ring from the core exclusive the central air hole. Each cladding defect along the x-axis contains 7 air holes and goes through from the core by only 1 layer of air holes. There are also two cladding defects along the y-axis.

Abstract: A single-core polarization-maintaining dispersion compensation micro-structured optical fiber comprises a fiber core, a first layer of air holes surrounding the fiber core, the cladding defects on the x-axis, the cladding defects on the y-axis, and the cladding. The air holes in the fiber cross section are arranged in the equilateral triangle lattice. Three consecutive air holes are omitted to form a solid area. This solid area is the fiber core. There are two cladding defects along the x-axis. Their centers are respectively located at the two vertices of the hexagon on the x-axis, which is formed by the fourth air hole ring from the core exclusive the central air hole. Each cladding defect along the x-axis contains 7 air holes and goes through from the core by only 1 layer of air holes. There are also two cladding defects along the y-axis.

Abstract: A polarization-maintaining dispersion-compensation microstructure fiber includes an inner core, an air-hole array in area 1 and an air-hole array in area 2. The air holes in the area 1 and 2 air-hole arrays are arranged in square lattice. The air-hole arrays in areas 1 and 2 are dislocated by half-layer along y-direction. In area 1, 2 air holes in the middle row are omitted to form a solid area as the inner core. 2 outer cores are located in 2 sub-areas of area 2, and each outer core contains 2 air holes. The long (or short) axes of the inner and outer cores are perpendicular, and the center points of the inner core and the two outer cores are located on the x-axis. The optical mode has a large negative dispersion in a certain polarized direction of the inner core, and the microstructure fiber can maintain the polarized direction of this mode during transmission.

Abstract: A method for preparing a polyol comprises the following steps of: (1) dissolving 2,3 -epoxybutane and an acid catalyst in an inert solvent to obtain a solution A; dissolving triethylene glycol in an inert solvent to obtain a solution B; and dissolving epoxy vegetable oil in an inert solvent to obtain a solution C; (2) respectively and simultaneously pumping the solutions A and B into a first micromixer for mixing; (3) pumping the solution C and an effluent of the first microreactor into a second micromixer for mixing while carrying out step (2); and (4) dissolving the vegetable oil polyol in an inert solvent to obtain a solution D; dissolving epoxypropane and an alkaline catalyst in an inert solvent to obtain a solution E; and pumping the solution D and the solution E into a tank reactor for reaction, thereby obtaining the polyol.

Abstract: The method of the polyurethane polyol comprises (1) dissolving 2,3-epoxybutane and an acid catalyst in an inert solvent to obtain a solution A; dissolving triethylene glycol in an inert solvent to obtain a solution B; and dissolving epoxy vegetable oil in an inert solvent to obtain a solution C; (2) respectively and simultaneously pumping the solutions A and B into a first micromixer for mixing; (3) pumping the solution C and an effluent of the first microreactor into a second micromixer for mixing while carrying out step (2)?; and (4) dissolving the vegetable oil polyol in an inert solvent to obtain a solution D; dissolving epoxypropane and an alkaline catalyst in an inert solvent to obtain a solution E; and pumping the solution D and the solution E into a tank reactor for reaction, thereby obtaining the polyurethane polyol.

Abstract: A method for implementing animation in a client application, includes receiving an animation code written in a script language from a server, the animation code including a logic script and an animation description script; parsing the logic script in the animation code, and obtaining a view identifier, an animation identifier, and a pre-obtained correspondence relationship between the view identifier and the animation identifier included therein; determining a view component to be driven and corresponding to the view identifier in a client application based on a correspondence relationship between view identifiers and view components, and reading an animation description to be implemented and corresponding to the animation identifier in the animation description script according to the animation identifier corresponding to the view identifier; and determining that loading of the animation description to be implemented in the view component to be driven according to a condition provided by the logic script.

Abstract: A method for implementing animation in a client application, includes receiving an animation code written in a script language from a server, the animation code including a logic script and an animation description script; parsing the logic script in the animation code, and obtaining a view identifier, an animation identifier, and a pre-obtained correspondence relationship between the view identifier and the animation identifier included therein; determining a view component to be driven and corresponding to the view identifier in a client application based on a correspondence relationship between view identifiers and view components, and reading an animation description to be implemented and corresponding to the animation identifier in the animation description script according to the animation identifier corresponding to the view identifier; and determining that loading of the animation description to be implemented in the view component to be driven according to a condition provided by the logic script.

Abstract: Provided is a method of determining a mode in a multi-mode terminal. The method includes the steps of: receiving key input of a telephone number; displaying a connectable service mode corresponding to the key input of the telephone number; receiving key input corresponding to the service mode; determining a prefix corresponding to the key input of the service mode; and adding the determined prefix in front of the telephone number to be transmitted, wherein the connectable service mode is automatically renewed in the region where the service is provided. Also, a multi-mode terminal is provided.

Abstract: The present invention relates to a switch-charging apparatus of the chargeable electric torch which has a switch-charging base. A lug plate is placed in the middle of the switch-charging base between the bottom of the switch-case and the switch-charging base. A switch assembly matches with the upper of the lug plate while a charging assembly matches with the lower of the lug plate. The present invention provides a switch-charging apparatus of the chargeable electric torch with integrated charging and switch components, simple structure, and normally-open self-reset button function.