Abstract: A stator structure is provided and includes a plurality of first lamination layers, a plurality of second lamination layers, two third lamination layers and two oil spraying rings. The second lamination layers are sandwiched in between the first lamination layers. The second lamination layer located in the middle of the stator structure is sandwiched in between the two third lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. Another stator structure is provided and includes a plurality of first lamination layers, a second lamination layer and two oil spraying rings. The second lamination layer is sandwiched in between two first lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. By means of the arrangement of the aforesaid stator structure, the invention can effectively improve heat dissipating effect for oil cooling.

Abstract: A method is for producing activated carbon. The method has the steps of carbonization of a carbon precursor by a first heat treatment to obtain char; mixing of the char with a chemical agent and a reducing agent to serve as a feedstock mixture; and activation of the feedstock mixture by a second heat treatment, wherein the chemical agent is selected from a group comprising potassium hydroxide, sodium hydroxide, sodium carbonate, potassium carbonate, potassium oxide, and sodium oxide and wherein the reducing agent comprises a metal. An electrode has the activated carbon produced by the method. A supercapacitor has the electrode.

Abstract: An identification method of urban functional areas based on mixing degree of functions and integrated learning includes the following steps: 1) performing data acquisition and preprocessing; 2) constructing 10 indicator features of an urban functional area identification system; 3) structuring the indicator features: acquiring, by a spatial statistical tool, the 10 indicator features corresponding to each parcel; 4) constructing an independent variable dataset; 5) labeling response variables; 6) dividing a training dataset into a plurality of training subsets according to the mixing degree of functions; 7) training a Stacking-based integrated learning model; and 8) joining an attribute in one table to another table, so as to complete the identification of the urban functional areas on each parcel. The identification method divides the training dataset by grading the mixing degree of functions, and makes predictions based on the prediction dataset with corresponding mixing degree of functions.

Abstract: An identification method of urban functional areas based on mixing degree of functions and integrated learning includes the following steps: 1) performing data acquisition and preprocessing; 2) constructing 10 indicator features of an urban functional area identification system; 3) structuring the indicator features: acquiring, by a spatial statistical tool, the 10 indicator features corresponding to each parcel; 4) constructing an independent variable dataset; 5) labeling response variables; 6) dividing a training dataset into a plurality of training subsets according to the mixing degree of functions; 7) training a Stacking-based integrated learning model; and 8) joining an attribute in one table to another table, so as to complete the identification of the urban functional areas on each parcel. The identification method divides the training dataset by grading the mixing degree of functions, and makes predictions based on the prediction dataset with corresponding mixing degree of functions.

Abstract: The present invention relates generally to a helmet, method and server for detecting a likelihood of an accident. According to a first aspect, the present disclosure refers to a helmet of detecting a likelihood of an accident, comprising: a sensor configured to detect a signal relating to a user wearing the helmet, the signal including information at a point in time for the user; and a processor configured to communicate with the sensor and to: determine if there is the likelihood of the accident in response to receiving the signal; generate an alert signal in response to the determination, the alert signal indicating there is the likelihood of the accident.

Abstract: The disclosure relates to the technical field of vehicle accessories, and specifically provides an electric motor for a vehicle and a vehicle. The disclosure aims to solve the problems existing in an existing electric motor for a vehicle that during spraying and cooling of an outer surface of an iron core, a heat dissipation area of the outer surface of the iron core is small, and a convective heat transfer coefficient of a heat dissipation surface is small.

Abstract: The disclosure relates to the technical field of vehicle accessories, and specifically provides an electric motor for a vehicle and a vehicle. The disclosure aims to solve the problems existing in an existing electric motor for a vehicle that during spraying and cooling of an outer surface of an iron core, a heat dissipation area of the outer surface of the iron core is small, and a cooling oil easily flows along an outer wall of a cooling oil ring, so that an end portion of a winding cannot be cooled.

Abstract: A system and a method for handling events of a fleet of personal mobility devices (PMDs), the system including: a server configured to receive live data from the fleet of PMDs, store the live data in a first memory, and accumulated it as part of historical data. The server may include a processing logic including a classifier configured to provide prediction data based on at least one of: the historical data, the live data. The system may include an event processor configured to process an alarm of the live alarm data of the live data or the prediction alarm data of the prediction data, and generate an alert. Each PMD may include an IoT device and a power controller, and wherein the live data may include first data originating from the power controller and second data originating from the IoT device of a PMD of the fleet.

Abstract: A stator structure is provided and includes a plurality of first lamination layers, a plurality of second lamination layers, two third lamination layers and two oil spraying rings. The second lamination layers are sandwiched in between the first lamination layers. The second lamination layer located in the middle of the stator structure is sandwiched in between the two third lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. Another stator structure is provided and includes a plurality of first lamination layers, a second lamination layer and two oil spraying rings. The second lamination layer is sandwiched in between two first lamination layers. The two oil spraying rings are connected to two first lamination layers located at outermost sides. By means of the arrangement of the aforesaid stator structure, the invention can effectively improve heat dissipating effect for oil cooling.

Abstract: In one aspect, a scooter is provided. The scooter may include a steering column. The scooter may include a rider-support-platform coupled to the steering column. The scooter may include an antenna attached to the steering column. The antenna may be configured to perform wireless communication. The antenna may have a first inclination angle relative to the steering column. In another aspect, a method of providing a scooter is provided. The method may include providing a steering column of the scooter. The method may include coupling a rider-support-platform to the steering column. The method may include attaching an antenna to the steering column. FIG.