Abstract: A light-emitting device includes: an epitaxial structure having a first surface and a second surface opposite to the first surface, and including a first type semiconductor layered unit that includes a first type window layer and a first type ohmic contact layer disposed at one side of the first type window layer; an active layer; and a second type semiconductor layered unit. The first type window layer is disposed between the first type ohmic contact layer and the active layer. The first type ohmic contact layer contains a material represented by Alx1Gay1InP, where 0?x1?1, 0?y1?1. The first type window layer contains a material represented by Alx2Gay2InP, where 0<x2?1, 0?y2?1. The first type ohmic contact layer has an Al content lower than an Al content of the first type window layer. A light-emitting apparatus that includes a light-emitting device according to the disclosure is also disclosed.

Abstract: The present invention provides a prediction method for stall and surging of an axial-flow compressor based on a deep autoregressive network. Firstly, selecting and preprocessing surging experimental data of a certain type of aero-engine, and dividing the data into a training set and a test set. Secondly, building and training a deep autoregressive network model based on an attention mechanism, using the finally trained model to conduct real-time prediction on the test set, and giving a model loss and an evaluation index. Finally, using a prediction model to conduct real-time prediction on the test data, and giving a trend of surging probability varying with time in chronological order. The present invention uses the attention mechanism to effectively capture the features of the experimental data and accurately predict the surging probability, which improve the stability and accuracy of prediction, is beneficial to improving the performance of active control of the engine.

Abstract: A method for dividing communication services in smart substation into different priorities, the method including: determining the priority of a message to be sent according to the service type and its priority definition; the communication services includes trip message, state change message, sampled value message, device status message, time synchronization message, and file transfer message; the corresponding priority is respectively defined as 7, 6, 5, 4, 3, 1; and filling the user priority field of IEEE802.1Q label in a message header with a binary value corresponding to its priority.

Abstract: A method for dividing communication services in smart substation into different priorities, the method including: determining the priority of a message to be sent according to the service type and its priority definition; the communication services includes trip message, state change message, sampled value message, device status message, time synchronization message, and file transfer message; the corresponding priority is respectively defined as 7, 6, 5, 4, 3, 1; and filling the user priority field of IEEE802.1Q label in a message header with a binary value corresponding to its priority.