Abstract: A method and apparatus used for extracting a feature point of an environmental target, which relate to the field of vehicles. The method comprises: acquiring the position of each corner point of an environmental target; and determining a feature point of the environmental target according to the position of each corner point of the environmental target. Thus, the problem wherein target identification is not precise may be solved, which is particularly suitable for the identification of a large target.

Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: The present invention relates to a spectrally selective emitter and a design method thereof. The designed emitter has a one-dimensional layered structure, including a first layer, a second layer and a third layer arranged in sequence, wherein both the first and third layers are hafnium oxide layers, and the second layer is a hafnium oxide layer with multiple erbium oxide nanoparticles distributed. The designed emitter is a material-type emitter with spectrally selective emittance. Compared with the traditional structure-type emitter, the material-type emitter has high thermal stability and oxidation resistance, which can fundamentally solve the high-temperature degradation problem.

Abstract: The present invention relates to a tetracyclic derivative, a method for preparing same and the use thereof in medicine. In particular, the present invention relates to a tetracyclic derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof, and the use thereof as a therapeutic agent, especially as a K-Ras GTPase inhibitor, with definitions of each substituent in general formula (I) being the same as of which are defined in the description.

Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: A method and an information processing apparatus to generate a digital score file of a song are described. The information processing apparatus includes processing circuitry. The processing circuitry is configured to obtain a candidate audio file satisfying a first condition from audio files of unaccompanied singing of the song without instrumental accompaniment. The processing circuitry is configured to divide the candidate audio file into valid audio segments based on timing information of the song, and extract pieces of music note information from the valid audio segments. Each of the pieces of music note information includes at least one data set of a music note in the song. The data set includes an onset time, a duration, and a music note value of the music note. The processing circuitry is configured to generate the digital score file based on the pieces of music note information.

Abstract: A sound file sound quality identification method is provided. The method includes converting a format of a to-be-identified sound file into a preset reference audio format; performing framing on the sound file to obtain a plurality of frames; and performing Fourier transformation processing on the to-be-identified sound file to obtain a spectrum of each frame. The method also includes performing model matching according to the spectrum of each frame of the to-be-identified sound file to obtain a preliminary classification result of the to-be-identified sound file; determining an energy change point of the to-be-identified sound file according to the spectrum of each frame; and determining a sound quality of the to-be-identified sound file according to the preliminary classification result of the to-be-identified sound file and the energy change point of the to-be-identified sound file.

Abstract: The present disclosure discloses an audio data processing performed by a computing device. The computing device obtains song information of a song, the song information comprising an accompaniment file, a lyric file, and a music score file that correspond to the song and then determines a predefined portion of the song and music score information corresponding to the predefined portion according to the song information. After receiving audio data that is input by a user, the computing device determines time information of each word in the audio data and then processes the audio data according to the time information of each word in the audio data and the music score information of the predefined portion of the song. Finally, the computing device obtains mixed audio data by mixing the processed audio data and the accompaniment file.

Abstract: A dual sound source audio data processing method and apparatus are provided. The method includes obtaining audio data of a song pair including a first song and a second song, the first and second songs having a same accompaniment audio but different voice audio. The audio data is decoded to obtain first mono audio data corresponding to the first song and second mono audio data corresponding to the second song. The first and second mono audio data are combined to one piece of two-channel audio data including a left audio channel and a right audio channel. A play time of the two-channel audio data is divided into play periods, and energy suppression is selectively performed on the left audio channel and the right audio channel in different play periods.

Abstract: A song determining method and device are provided. According to the embodiment of the present disclosure, by extracting the audio file in the video and acquiring the candidate song identification of the candidate song, to which the segment belongs, in the audio file, the candidate song identification set is obtained; then by acquiring the candidate song file corresponding to the candidate song identification and acquiring a matched audio frame, in which the candidate song file is matched with the audio file, the matched audio frame unit is obtained, wherein the matched audio frame unit includes multiple continuous matched audio frames; the target song identification of the target song, to which the segment belongs, is acquired from the candidate song identification set according to the matched audio frame unit corresponding to the candidate song identification, and the target song, to which the segment belongs, is determined according to the target song identification.

Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: The present disclosure provides an audio data processing method performed at an electronic apparatus, the method including: obtaining a corresponding lyric file according to audio data to be processed; dividing the audio data according to a sentence in the lyric file to obtain an audio data segment; extracting data corresponding to an end syllable in the audio data segment; and performing harmonic processing on the data corresponding to the end syllable. In addition, further provided is an audio data processing device matching the method. The audio data processing method and device can prevent entire audio data from being attached with a harmonic sound effect during an entire time period, thereby improving authenticity of harmonic simulation.

Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: A wearable filtrating artificial kidney device, comprising a transfusion inlet (2), a blood pump (3), an arterial pressure detector (4), a blood filter (7), a venous pressure detector (8) and an air detector (9), wherein the transfusion inlet (2), the blood pump (3), the arterial pressure detector (4), a resin hemoperfusion apparatus (5), an active carbon hemoperfusion apparatus (6), the blood filter (7), the venous pressure detector (8) and the air detector (9) are connected sequentially; a liquid waste outlet of the blood filter (7) is connected with an ultrafiltration control pump (10). Glomerulus filtration can be simulated to achieve the goal of removing toxins and excessive moisture in the blood by virtue of ultrafiltration of the blood filter (7). A dialyzate and a complicated dialyzate circulating device are not used for the device, so that the volume and weight of the device can be reduced greatly, and the device can be worn conveniently.

Abstract: An audio information processing method and apparatus are provided. The method includes decoding a first audio file to acquire a first audio subfile corresponding to a first sound channel and a second audio subfile corresponding to a second sound channel; extracting first audio data from the first audio subfile; extracting second audio data from the second audio subfile; acquiring a first audio energy value of the first audio data; acquiring a second audio energy value of the second audio data; and determining an attribute of at least one of the first sound channel and the second sound channel based on the first audio energy value and the second audio energy value.

Abstract: An audio processing method, apparatus and system, capable of realizing the experience of singing Karaoke with other people. The method comprises: acquiring an audio file of a song and a lyric file of the song; playing the audio file at display time corresponding to a first lyric part of the lyric file and recording audio data of a user; playing the audio file at display time corresponding to a second lyric part of the lyric file; and performing audio mixing on the audio data of the user and audio data of the audio file at the display time corresponding to the first lyric part.

Abstract: The present invention relates to a pyrimidine derivative, a method for preparing same and use thereof in medicine. In particular, the present invention relates to a pyrimidine derivative represented by general formula (I), a method for preparing same and a pharmaceutically acceptable salt thereof as well as use thereof as a therapeutic agent, in particular as a FGFR4 kinase inhibitor, definitions of each substituent in the general formula (I) being the same as those defined in the description.

Abstract: An audio-mixing processing method, an audio-mixing processing apparatus, a device, and a storage medium are provided. The method includes: extracting a signal sm(n) of a frame in a signal of a first channel and a signal vm(n) of a frame in a signal of a second channel, where the signal vm(n) corresponds to the signal sm(n), the signal of the second channel is required to be mixed with the signal of the first channel, and n represents the number of sample points; weighting the signal sm(n) and the signal vm (n), and adding the weighted signal sm(n) and the weighted signal vm(n) to acquire a mixed signal ym(n); and calculating a variable attenuation factor based on a maximum value ymax of a sequence of the mixed signal ym(n), and attenuating the mixed signal ym(n) by using the variable attenuation factor to generate an output signal Zm(n).