Abstract: An electric vehicle is provided, including: a main body, traveling wheels, a drive assembly and a controller. The traveling wheels are arranged on the main body. The drive assembly is arranged on the main body and includes a hub motor. The hub motor is arranged on the traveling wheels. The controller is used to control the hub motor.

Abstract: The field is related to plant breeding and methods of identifying and selecting plants with resistance to southern corn rust. Provided are methods to identify novel genes that encode proteins providing plant resistance to southern corn rust and uses thereof. These disease resistant genes are useful in the production of resistant plants through breeding, transgenic modification, or genome editing.

Abstract: The invention provides a reaction system for preparing butyraldehyde by propylene carbonylation, comprising: a reactor; a side wall of the reactor is sequentially provided with a catalyst inlet, a propylene inlet and a synthesis gas inlet from top to bottom; the bottom of the reactor is provided with a solvent inlet; two micro-interface generators are arranged inside of the reactor from top to bottom, and the micro-interface generator located at a top end is connected to the propylene inlet to break the propylene gas into micron-scale micro-bubbles; the micro-interface generator located at a bottom is connected to the synthesis gas inlet for breaking the synthesis gas into micron-scale micro-bubbles; the outlets of the two micro-interface generators are opposite, and the outlets are connected with a gas distributor for evenly distributing raw materials.

Abstract: The present disclosure provides a trailer and a vehicle. The trailer comprises: a structural beam; and at least one container protector installed on the structural beam; wherein the container protector comprises a drive member and a protection member, the drive member being adapted to drive the protection member to rise and lower, and the protection member being capable of providing a limiting function for a container on the trailer when raised. The present disclosure may automatically raise the protection member after installing the container on the trailer so that the protection member locks the container; before the container is to be unloaded, the protection member is automatically retracted to release the limiting function for the container. In this way, it is no longer necessary to specially manually tighten or loosen a shackle of a container, realizing the intelligent control of cargo loading and unloading.

Abstract: Disclosed in the present invention is a signal transmission method for a multi-antenna multi-user TDD communication system. Each frame of the TDD communication system includes one forward downlink frame synchronization signal, multiple downlink data time slots, and multiple uplink data time slots; the downlink frame synchronization signal is a broadcast signal, the base station sends the downlink frame synchronization signal to all terminals, and after each terminal receives the downlink frame synchronization signal, time and frequency synchronization is performed with reference to the base station to acquire the start time and end time of each uplink data time slot. The synchronization signal received power P is evaluated and compared with the synchronization signal received power range of all uplink data time slots in the frame, and all terminals falling into the synchronization signal received power range of the uplink data time slot k select the uplink data time slot k to send data.

Abstract: A channel changing method and an apparatus thereof, where the method includes: sending, by a playback device to a fast channel change (FCC) server, a channel change request for a change to a target channel; receiving a low bit rate media stream of the target channel that is quickly sent by the FCC server, for playing; receiving, by the playback device, a source bit rate media stream of the target channel from a head end device when receiving a quick-sending end notification sent by the FCC server; and splicing, by the playback device, the source bit rate media stream of the target channel and the low bit rate media stream of the target channel and performing playing.

Abstract: Disclosed in the present invention is a signal transmission method for a multi-antenna multi-user TDD communication system. Each frame of the TDD communication system includes one forward downlink frame synchronization signal, multiple downlink data time slots, and multiple uplink data time slots; the downlink frame synchronization signal is a broadcast signal, the base station sends the downlink frame synchronization signal to all terminals, and after each terminal receives the downlink frame synchronization signal, time and frequency synchronization is performed with reference to the base station to acquire the start time and end time of each uplink data time slot. The synchronization signal received power P is evaluated and compared with the synchronization signal received power range of all uplink data time slots in the frame, and all terminals falling into the synchronization signal received power range of the uplink data time slot k select the uplink data time slot k to send data.

Abstract: In one embodiment, a method includes sending videos to users that use a video delivery service. The videos include shows that have episodes released sequentially. The method records historical records of video views for the video based on the sending of the videos to the users. For a show, a show-specific model is determined to predict future video views by performing: determining historical records of video views for different episodes of the show; training the show-specific model with the historical records, wherein the show-specific model models a decay curve with a regularizing term to regularize a decay speed; using the show-specific model to predict future video views for a future time range for episodes of the show; and outputting the future video views to an ad system configured to sell ads for the show.

Abstract: A channel changing method and an apparatus thereof, where the method includes: sending, by a playback device to a fast channel change (FCC) server, a channel change request for a change to a target channel; receiving a low bit rate media stream of the target channel that is quickly sent by the FCC server, for playing; receiving, by the playback device, a source bit rate media stream of the target channel from a head end device when receiving a quick-sending end notification sent by the FCC server; and splicing, by the playback device, the source bit rate media stream of the target channel and the low bit rate media stream of the target channel and performing playing.

Abstract: In one embodiment, a method selects a set of accounts related to a video using a first classifier that is trained to identify the set of accounts from a plurality of accounts and selects a token used to identify the video. A second classifier is trained to identify short messages that are related to the video using a first set of short messages from the accounts related to the video and the second set of short messages including the tokens. A third set of short messages is identified that is related to the video from a plurality of short messages. The method normalizes words in the set of short messages using a mixed model including a lexicon model and a translation model. Then, the method generates a set of ratings for the set of short messages and uses the set of ratings in a service for a video delivery service.

Abstract: In one embodiment, a method receives a video and information for entities that appear in the video. The video is played in a media player without displaying a queue configured to display one or more entities. When an input is received to display the queue while playing the video, the method performs: determining a set of entities in relation to a time associated with playing the video using the information for the entities that appear in the video and displaying the set of entities in the queue, wherein the video continues to play in the media player while the queue is displayed.

Abstract: A miniature speaker comprises a first housing body and a second housing body, which are combined together. A vibrating system and a magnetic circuit system are accommodated in a space defined by the first housing body and the second housing body. The miniature speaker is characterized in that the sidewall at the end of the second housing body, which is combined with the first housing body, surrounds the periphery of the first housing body; a gap is provided between the outer edge of the first housing body and the inner side of the sidewall of the second housing body; the miniature speaker further comprises a sealing member which covers the first housing body, and the edge of the sealing member is located in the gap, which makes the gap between the first housing body and the second housing body sealed.

Abstract: A method transcodes a media program to produce a constant video quality transcoded version of the media program. The constant video quality transcoded version is transcoded by a transcoder operating in a first mode that targets video quality. A portion of the constant video quality transcoded version that fails to satisfy a constraint is determined. The method sets a transcoding parameter based on the portion failing to satisfy the constraint. A portion of the media program corresponding to the portion of the constant video quality transcoded version is transcoded according to the transcoding parameter to produce a constant bit rate version of the portion. The constant bit rate version is transcoded by the transcoder operating in a second mode that targets a bit rate. The method then substitutes the constant bit rate version for the portion of constant video quality transcoded version in generating a transcoded media program.

Abstract: A miniature speaker comprises a first housing body and a second housing body, which are combined together. A vibrating system and a magnetic circuit system are accommodated in a space defined by the first housing body and the second housing body. The miniature speaker is characterized in that the sidewall at the end of the second housing body, which is combined with the first housing body, surrounds the periphery of the first housing body; a gap is provided between the outer edge of the first housing body and the inner side of the sidewall of the second housing body; the miniature speaker further comprises a sealing member which covers the first housing body, and the edge of the sealing member is located in the gap, which makes the gap between the first housing body and the second housing body sealed.

Abstract: Particular embodiments provide dynamic seek processing that minimizes re-buffering after a seek request is received. When a seek occurs to a seeking position, a media player downloads a segment N of the media program that includes the seeking position. To address possible re-buffering, the media player employs a seeking process that may analyze playback factors to determine when to start playback after the segment N that contains the seeking position has been downloaded. Factors include the position within the segment N, the current bandwidth, the next segment's size, and the current bitrate being requested. Depending on these factors, the media player may decide to delay playback even though the segment N has already been downloaded. This allows the next segment N+1 more time to download and then playback can begin with less chance of re-buffering. Particular embodiments also provide a process to calculate the number of seconds to delay playback.

Abstract: A method transcodes a media program to produce a constant video quality transcoded version of the media program. The constant video quality transcoded version is transcoded by a transcoder operating in a first mode that targets video quality. A portion of the constant video quality transcoded version that fails to satisfy a constraint is determined. The method sets a transcoding parameter based on the portion failing to satisfy the constraint. A portion of the media program corresponding to the portion of the constant video quality transcoded version is transcoded according to the transcoding parameter to produce a constant bit rate version of the portion. The constant bit rate version is transcoded by the transcoder operating in a second mode that targets a bit rate. The method then substitutes the constant bit rate version for the portion of constant video quality transcoded version in generating a transcoded media program.

Abstract: In one embodiment, a method determines known features for existing face tracks that have identity labels and builds a database using these features. The face tracks may have multiple different views of a face. Multiple features from the multiple faces may be taken to build the face models. For an unlabeled face track without identity information, the method determines its sampled features and finds labeled nearest neighbor features with respect to multiple feature spaces from the face models. For each face in the unlabeled face track, the method decomposes the face as a linear combination of its neighbors from the known features from the face models. Then, the method determines weights for the known features to weight the coefficients of the known features. Particular embodiments use a non-linear weighting function to learn the weights that provides more accurate labels.

Abstract: A method and apparatus for encoding a source media program is disclosed. In one embodiment, the method comprises the steps of transcoding the source media program to produce a constant video quality transcoded version of the media program, determining if a portion of constant video quality version of the transcoded media program fails to satisfy a constraint, if the portion of the transcoded media program fails to satisfy the constraint, adjusting at least one transcoding parameter of a set of transcoding parameters, transcoding the portion of the source media program according to the adjusted at least one transcoding parameter to produce a constant bit rate version of the portion of the transcoded media program, and substituting the constant bit rate version of the portion of the transcoded media program for the constant video quality portion of the transcoded media program.

Abstract: In one embodiment, a method determines a video including ad slots inserted within the video. The method generates a caption curve for a caption file of caption segments for a video based on start and stop times for caption segments in the caption file. The caption segments in the caption file were generated for the video without including ad slots. Then, the method determines a speech velocity for the video using the caption file and revises the caption curve based on the speech velocity and a number of characters in caption segments in the caption file. A speech probability curve is determined based on audio of the video and the method correlates the speech probability curve to the revised caption curve to align the caption segments of the caption file with speech of the video.