Abstract: Some disclosed embodiments are directed to methods and systems for performing pair-wise delta compression. For example, systems obtain a set of files to be compressed into a single compressed file. The system identifies different attributes related to the set of files. For each file in the set of files, the system predicts an optimized set of candidate compression files and calculates a delta between each file in the optimized set and the target file corresponding to the optimized set. After identifying the smallest delta, the system compresses the selected pair of files associated with the smallest delta in order to generate the single compressed file for the set of files.

Abstract: The present disclosure relates to a pair of glasses. The pair of glasses may include a frame, one or more lenses, and one or more temples. The pair of glasses may further include at least one low-frequency acoustic driver, at least one high-frequency acoustic driver, and a controller. The at least one low-frequency acoustic driver may be configured to output sounds from at least two first guiding holes. The at least one high-frequency acoustic driver may be configured to output sounds from at least two second guiding holes. The controller may be configured to direct the low-frequency acoustic driver to output the sounds in a first frequency range and direct the high-frequency acoustic driver to output the sounds in a second frequency range. The second frequency range may include one or more frequencies higher than one or more frequencies in the first frequency range.

Abstract: This application provides example uplink transmit power determining methods and example terminal devices. One example method includes receiving, by a terminal device, a broadcast message that is sent by an access network device and that carries first power control information, where the first power control information is used to determine a modulation and coding scheme (MCS) compensation factor. The terminal device can then determine the MCS compensation factor based on the first power control information. The terminal device can then determine a first candidate uplink transmit power based on the MCS compensation factor. The terminal device can then determine a smaller value in the first candidate uplink transmit power and a second candidate uplink transmit power as a physical uplink shared channel (PUSCH) transmit power. The terminal device can then send PUSCH information in a random access message based on the PUSCH transmit power.

Abstract: The present disclosure discloses a loudspeaker apparatus. The loudspeaker apparatus may include a support connection member configured to contact with a user's head. The loudspeaker apparatus may include at least one loudspeaker assembly. The loudspeaker assembly may include an earphone core and a core housing configured to accommodate the earphone core. The core housing may be fixedly connected to the support connection member. At least one button module may be arranged on the core housing. The interior of the core housing may further include at least two microphones, and the at least two microphones may be arranged at a position different from a user's mouth. The loudspeaker apparatus may further include a control circuit or a battery accommodated in the support connection member. The control circuit or the battery may drive the earphone core to vibrate to generate sound.

Abstract: This application provides an organic mixed metal-oxygen cluster compound, and a chemical general formula thereof is as follows: (M1)a(M2)b(M3)cOg(L1)x(L2)y(L3)z, where M1 is selected from at least one of Ti, Zr, and Hf; M2 is selected from at least one of Bi, Te, Sn, Pt, Ag, and Au; M3 is selected from one of Fe, Ni, Co, and Cu; L1, L2, and L3 are respectively selected from organic ligands that directly coordinate with a metal and include one of O, S, Se, N, and P that serves as a ligating atom; a, b, g, x, y, and z are all natural numbers greater than or equal to 1; and c is a natural number greater than or equal to 0. This application further provides a patterning material including the organic mixed metal-oxygen cluster compound, a semiconductor device including the patterning material, a terminal, and a substrate surface patterning method.

Abstract: The present disclosure provides a method for evaluating a pipeline cleaning solution based on smart gas and an Internet of Things system. The method comprises: obtaining an operation feature of at least one gas pipeline and inspection data of the at least one gas pipeline; determining an area to be cleaned and an area feature of the area to be cleaned; generating at least one candidate pipeline cleaning solution based on the area feature of the area to be cleaned; processing each of the at least one candidate pipeline cleaning solution and the area feature through a pipeline cleaning effect prediction model to determine a pipeline cleaning effect of each of the at least one candidate pipeline cleaning solution; determining a pipeline cleaning solution based on the pipeline cleaning effect; and evaluating a pipeline cleaning effect of the pipeline cleaning solution based on an implementation of the pipeline cleaning solution.

Abstract: A beam indicating apparatus for a repeater, configured in a network device, includes: a transmitter configured to transmit a first indication to the repeater, the first indication being used to indicate at least one beam, wherein the at least one beam includes a first beam and/or a second beam, the first beam being used by the repeater to forward a first signal from the network device to a terminal equipment, the second beam being used by the repeater to receive a second signal from the terminal equipment, the second signal being used for being forwarded to the network device, the first beam and the second beam are denoted by beam indices.

Abstract: Various embodiments use a feedback-control loop to track slow charge loss (SCL) for a memory cell of a memory device, which can be used to adjust one or more read level voltages used to read data from the memory cell.

Abstract: The present disclosure provides a headphone including a sound production component and an ear hook. The ear hook and the sound production component form a first projection on a user's sagittal plane. In a non-wearing state, an inner contour, a first end contour, a second end contour of the first projection, and a tangent segment connecting the first end contour and the second end contour jointly define a first closed curve. A first area of the first closed curve ranges 300 mm2-500 mm2. A portion of the inner contour corresponding to the ear hook includes a first curve. The first curve has an extremum point in a first direction perpendicular to a long axis direction of a projection of the sound production component, the extremum point is located behind a projection point of an upper vertex of the ear hook on the sagittal plane.

Abstract: The present disclosure provides a microphone apparatus. The microphone apparatus may include a microphone and a vibration sensor. The microphone may be configured to receive a first signal including a voice signal and a first vibration signal. The vibration sensor may be configured to receive a second vibration signal. And the microphone and the vibration sensor are configured such that the first vibration signal may be offset with the second vibration signal.

Abstract: A data transmission method and apparatus are disclosed. The method includes a first communication apparatus obtains information bit information of an ith sub-block, where the information bit information of the ith sub-block includes information bits of the ith sub-block and an information bit length of the ith sub-block, and i is a positive integer; obtains a matrix order M of the RM corresponding to the first communication apparatus in the ith sub-block, where M is a positive integer; then obtains, based on M, a first P matrix and a first b vector that are used to generate an RM; then generates, based on the first P matrix and the first b vector, the RM sequence corresponding to the ith sub-block; and finally, outputs the RM sequence corresponding to the ith sub-block.

Abstract: An open earphone includes an acoustic driver for generating two sounds with opposite phases; a housing for accommodating the acoustic driver; and a suspension structure for fixing the housing in a position near an ear of a user without blocking an ear canal of the user. The housing is provided with two sound holes for outputting each of the two sounds with opposite phases. The housing includes a body and a baffle. The body defines a first cavity for housing the acoustic driver. The baffle is connected to the body and extended in a direction toward the ear canal of the user, and defines a second cavity with the auricle of the user. The two sound holes are disposed respectively inside and outside the second cavity.

Abstract: Embodiments of this application provide a data transmission method and apparatus. A method at a transmit end includes: obtaining a first sequence, where the first sequence includes a first sub-sequence and a second sub-sequence; mapping the first sub-sequence into K third sub-sequences based on a preset sequence group; performing differential coding and phase modulation on the second sub-sequence to obtain a fourth sequence whose length is K?; obtaining K fifth sub-sequences based on the K third sub-sequences and the K? fourth sub-sequences; and outputting a second sequence including the K fifth sub-sequences. A method at a receive end includes: obtaining a second sequence including K fifth sub-sequences, and detecting the K fifth sub-sequences based on a preset sequence group to obtain a first sub-sequence; and performing differential demodulation based on the first sub-sequence to obtain a second sub-sequence, so that a first sequence is determined.

Abstract: Provided are a method and apparatus for blockchain community governance, a device and a storage medium. The method is described below. A community governance transaction request initiated by a blockchain account and a governance scene to which the community governance transaction request belongs are acquired. Community governance authority of the blockchain account in the governance scene is verified according to the governance scene and governance token resource information in the blockchain account. In a case where a community governance authority verification is successful, the community governance transaction request is executed.

Abstract: A method for linkage alarm between a gas alarm and a gas meter is provided. The method comprises: obtaining a detection signal through electrical connection with the alarm; in response to the detection signal meeting a preset alarm condition, determining a target alarm event corresponding to the detection signal; when the target alarm event is the abnormal gas concentration in the target area, closing, by the gas meter, a gas valve of the gas meter; when the target alarm event is the abnormal operation of the alarm or the abnormal connection of the alarm, receiving a reset instruction; determining a reset alarm event corresponding to the at least one reset operation; determining a credibility of the target alarm event; determining whether to send a control closing instruction to the gas meter based on the credibility; and closing the gas valve of the gas meter based on the control closing instruction.

Abstract: Methods and apparatuses for information transmission and reception are provided. The method includes: determining a demodulation reference signal in a time-domain resource by a transmitting device at least according to the number of a part of symbols in the time-domain resource; wherein the number of symbols contained in the time-domain resource is less than or equal to the number of symbols contained in a slot or a subframe; and transmitting data information and the demodulation reference signal by the transmitting device to a receiving device by at least using the time-domain resource.

Abstract: Disclosed is a method and a system for safety management of a gas pipe well based on a smart gas IoT. The method may be executed by a processor and include: obtaining an environmental information sequence of the gas pipe well and an in-well monitoring data sequence by controlling a monitoring component according to a monitoring parameter based on the smart gas IoT, and storing the environmental information sequence and the in-well monitoring data sequence in a storage unit; determining an in-well risk value; adjusting the monitoring parameter in response to determining that the in-well risk value exceeds a risk threshold and updating the in-well risk value; determining an impact degree of a gas component; determining a pipe well inspection program and generating a corresponding pipe well inspection instruction to be sent to an inspection terminal; and adjusting the monitoring parameter and clearing expired data in the storage unit.

Abstract: A cleaning device is disclosed that includes a main body, a cleaning assembly, and a connection mechanism. The cleaning device further includes a cleaning liquid supply system including a cleaning liquid reservoir and a cleaning liquid output pipeline; and a dirt recovery system including a dirt reservoir, a dirt suction pipeline and a fan assembly. The connection mechanism is configured to connect the main body and the cleaning assembly, and includes at least two rotational connection portions, rotation axes of which are not parallel to each other; and the at least two rotational connection portions are configured to enable the main body to rotate relative to the cleaning assembly about the rotation axis of each of the at least two rotational connection portions.

Abstract: The present disclosure discloses a loudspeaker apparatus. The loudspeaker apparatus may include a support connection member configured to contact with a user's head. The loudspeaker apparatus may include at least one loudspeaker assembly. The loudspeaker assembly may include an earphone core and a core housing configured to accommodate the earphone core. The core housing may be fixedly connected to the support connection member. At least one button module may be arranged on the core housing. The interior of the core housing may further include at least two microphones, and the at least two microphones may be arranged at a position different from a user's mouth. The loudspeaker apparatus may further include a control circuit or a battery accommodated in the support connection member. The control circuit or the battery may drive the earphone core to vibrate to generate sound.