Abstract: The present invention provides a method for preparing a high molecular polymer powder material comprising the following steps: adding 20 parts of a high molecular powder material and 0.1 to 10 parts of carbon black into a mixing tank, and performing high-speed stirring for the first time to obtain a high molecular carbon black mixed powder material; adding the high molecular carbon black mixed powder material, 0.1 to 1 part of a flow aid, and 80 parts of a polymer powder material into the powder mixing tank; and performing high-speed stirring for a second time followed by sieving to obtain the high molecular polymer powder material.

Abstract: Systems and methods herein describe ranking reviews that specify details of a host user. The described systems and methods access a set of reviews associated with a host user and listing data, and for each review in the set of reviews, generate a first relevancy score associated with the host user and a second relevancy score associated with the listing data using a transformer machine learning model, determine a first rank score for the review based on the first relevancy score. The systems and methods cause display of the set of reviews in an order based on the associated first rank score on a graphical user interface of a computing device.

Abstract: The present disclosure provides a deep learning-based stop control method and system for a high-speed train, and relates to the technical field of rail transit management and control. The method includes: obtaining a training data set; establishing a convolutional neural network (CNN); training and optimizing the CNN by using the training data set, to obtain an optimized CNN; obtaining actual running data of a to-be-controlled train; inputting the actual running data into the optimized CNN to obtain a stop position of the to-be-controlled train; determining whether the stop position of the to-be-controlled train is 0; and if the stop position of the to-be-controlled train is 0, outputting a breaking command; or if the stop position of the to-be-controlled train is not 0, performing the step of “obtaining actual running data of a to-be-controlled train”. The present disclosure can ensure accurate stop of a high-speed train without high costs.

Abstract: A sound processing component applied to a string instrument for providing multiple playing forms and a MIDI function. An acquisition module acquires vibration information of multiple strings and outputs analog signals, and a first amplification and filter module amplifies the analog signals and filters the analog signals. A first conversion module converts the analog signals into digital signals, and a processing module identifies playing information of the digital signals, converts the digital signals to MIDI data based on the playing information, converts the MIDI data to audio data, and add audio effects for the audio data. A second conversion module converts the audio data with the audio effects into analog audio signals, and a second amplification and filter module amplifies the analog audio signals, filters the analog audio signals, and transmit the filtered analog audio signals to a loudspeaker. The string instrument is also provided.

Abstract: The present disclosure includes a recording device including a pickup unit, a microphone, and a pickup assembly. The pickup assembly includes a filter circuit unit, a codec, and an audio processing circuit unit. The pickup assembly is used to mix sounds of the musical instrument picked up by the pickup unit and human voices picked up by the microphone. The present disclosure also provides a musical instrument recording method, including the following: picking up the sounds of the musical instrument; picking up the human voices; and processing the sound recorded, in order to solve the problem of cumbersome connection and poor results during recording and live broadcasting of musical instruments.

Abstract: A pickup, a stringed instrument, and a pickup control method are disclosed. The pickup comprises: pickup components(110), multi-touch screens(130) and processing components(140). The multi-touch screens(130) and the processing components(140) are connected. The pickup components(110) and the processing components(140) are connected. The pickup components(110) is configured to pick up sound information emitted by a musical instrument. The multi-touch screen(130) is configured to display function application information that is selected from a group consisting of timbre adjustment function application information, tone adjustment function application information, and equalizer adjustment function application information. The multi-touch screen is configured to receive a function triggering instruction. The multi-touch screen displays information as to functional applications available through the pickup capabilities.

Abstract: An audio processing method, apparatus, and system. The processing method is applied to a sound pickup, and the sound pickup is connected to a controller. The method comprises: receiving timbre instruction information sent by a controller (S101); and analyzing the timbre instruction information, and carrying out, according to the timbre instruction information, timbre processing on audio that is picked up, wherein the timbre instruction information comprises timbre addition instruction information and/or timbre change instruction information (S102). The selection of various timbres in an audio processing process is enabled, the requirement for the integration of the related functions is met, and user experience is improved.

Abstract: An apparatus for cup loading and unloading and a thromboelastography machine are provided. The apparatus for cup loading and unloading includes a base, a shaft, a movable cover, and a cup holder. The shaft is rotatably connected to the base about an axis of the shaft and has an end configured to engage with an inner cup. The movable cover is disposed around the shaft and slidably connected to the base along the axis of the shaft. The movable cover is provided with an elastic member therein. The cup holder is slidably connected to the base along the axis of the shaft and disposed below the base and the shaft. The cup holder has a cavity configured to engage with an outer cup, and the cavity has an open directed upward.

Abstract: An apparatus for cup loading and unloading and a thromboelastography machine are provided. The apparatus for cup loading and unloading includes a base, a shaft, a movable cover, and a cup holder. The shaft is rotatably connected to the base about an axis of the shaft and has an end configured to engage with an inner cup. The movable cover is disposed around the shaft and slidably connected to the base along the axis of the shaft. The movable cover is provided with an elastic member therein. The cup holder is slidably connected to the base along the axis of the shaft and disposed below the base and the shaft. The cup holder has a cavity configured to engage with an outer cup, and the cavity has an open directed upward.

Abstract: The present invention relates to a sawing direction positioning system for a woodworking bandsaw. The system includes a light-emitting unit for emiting a planar light beam, the light-emitting unit being has a power supply via a lead and positioned above the woodworking bandsaw so that the planar light beam emitted from the light-emitting unit coincides exactly with the plane of the saw blade mounted on the woodworking bandsaw. During sawing, the projection line of the planar light beam always projects on the wood to be sawed and is not obstructed by sawdust. The operator has a good visual field and pushes the wood to be sawed along a right straight line drawn on the wood making sure that the sawing direction is correct or keeps in line with the drawn straight line thereby preventing the kerf from offsetting and reducing thus reducing rejected products.