Abstract: The present disclosure provides a fixed-position defect doping method for a micro-nanostructure based on a self-alignment process, including: S1, sequentially forming a sacrificial layer and a photoresist layer on a surface of a crystal substrate; S2, performing a lithography on the photoresist layer to form a mask hole according to a micro-nano pattern; S3, performing an isotropic etching on the sacrificial layer through the mask hole, and amplifying the micro-nano pattern to the sacrificial layer; S4, performing an ion implantation doping on an exposed crystal surface below the mask hole; S5, removing the photoresist layer, and depositing a mask material; S6, removing the sacrificial layer, and transferring a micro-nano amplified pattern in the sacrificial layer to a mask material pattern; and S7, etching an exposed crystal surface, and removing the mask material on the surface and forming a specific defect by annealing.

Abstract: A multi-active region cascaded Bragg reflection waveguide edge-emitting diode laser, including a substrate, a buffer layer, an N-type cladding layer, an N-type waveguide layer, a cascaded multi-active region, a P-type waveguide layer, a P-type cladding layer and a capping layer arranged sequentially from bottom to top. The waveguide layer adopts a Bragg reflection waveguide structure formed by periodic arrangement of high and low refractive index layers. The cascaded multi-active region includes multiple active regions, tunnel junctions and a confinement layer. A fundamental mode near field of the laser is formed by periodic oscillating peaks, with an envelope close to Gaussian distribution. There are large-swing oscillation peaks near the cascaded multi-active region. The active regions are located at peaks of the fundamental mode near field, and tunnel junctions are inserted at troughs with low light intensity.

Abstract: A wind farm control strategy method, apparatus and device, and a storage medium are provided. The method includes: acquiring incoming flow wind data of a target wind farm, a restriction relationship between wind turbines in the target wind farm and current working condition data of the wind turbines in the target wind farm; inputting the incoming flow wind data, the restriction relationship and the current working condition data into a pre-trained working condition prediction model to obtain target working condition data corresponding to a target generation power of the target wind farm, the target generation power being a maximum generation power of the target wind farm; and controlling operation of the wind turbines in the target wind farm based on the target working condition data.

Abstract: A wind farm control strategy method, apparatus and device, and a storage medium are provided. The method includes: acquiring incoming flow wind data of a target wind farm, a restriction relationship between wind turbines in the target wind farm and current working condition data of the wind turbines in the target wind farm; inputting the incoming flow wind data, the restriction relationship and the current working condition data into a pre-trained working condition prediction model to obtain target working condition data corresponding to a target generation power of the target wind farm, the target generation power being a maximum generation power of the target wind farm; and controlling operation of the wind turbines in the target wind farm based on the target working condition data.

Abstract: Methods and apparatuses are described for generating and manipulating 3D objects in a 3D environment of an alternative reality software application. A server retrieves a data set comprising data elements, each having one or more attributes. The server generates, for each data element, a virtual object, each virtual object positioned inside a virtual container and located in proximity to a center of the virtual container. The server attaches virtual magnets to an exterior surface of the virtual container, each magnet associated with a data filter value and an attraction value. The server determines, for each virtual object, a movement distance and a movement speed in relation to each virtual magnet based upon the data filter value and the attraction value for the virtual magnet. The server moves at least a portion of the virtual objects to a new location based upon the movement distance and movement speed.

Abstract: Methods and apparatuses are described for providing a thumb scroll user interface element in a computerized visual environment. A viewing device displays a graphical user interface within a three-dimensional space that includes surface planes each associated with a graphical thumb scroll element. A sensor device captures a location of the user's hand within the three-dimensional space and a gesture of the user's hand. A computing device detects that the location is within a defined zone around one of the graphical thumb scroll elements and activates the thumb scroll element associated with the defined zone. The computing device identifies the gesture, determines a scroll speed based upon a speed of the identified gesture, and determines a scroll direction based upon a direction of the identified gesture. The computing device changes characteristics of graphical content in the surface plane based upon at least one of: the scroll speed or the scroll direction.