Abstract: A method for predicting a recovery factor of deep coalbed methane includes: determining physical parameters, a capillary pressure, corrected values of reservoir porosity and water saturation, average coal reservoir pressure, cumulative water production, and conventional average gas deviation factor at multiple production dates; calculating an actual average gas deviation factor; establishing a prediction model for gas production of a reservoir; calculating an iterative value of a control volume; returning the iterative value to replace an initially given value of the control volume for loop calculation, determining a first relationship model between the cumulative water production and the average coal reservoir pressure; determining, based on the first relationship model, a predicted value on the vertical axis of the prediction model; and substituting the predicted value into a prediction model established in a last iteration of the loop calculation to obtain a recoverable reserve of coalbed methane, and calc

Abstract: A multi-band LED disinfection system and a multi-band LED disinfection lamp are provided. The multi-band LED disinfection system comprises a multi-band LED disinfection device; and a control terminal, which is connected to and controls the multi-band LED disinfection device. The control terminal sends a wavelength band control command to the multi-band LED disinfection device according to a disinfection target, and the multi-band LED disinfection device drives LED beads of corresponding wavelength bands. Different wavelength bands of ultraviolet light can be provided to achieve the disinfection of various germs, which leads to better sterilization and disinfection effects. A control module can be used to switch between disinfection of a certain wavelength band and disinfection of superposed wavelength bands.

Abstract: A patient support system for providing improved guidance tools with respect to a patient support apparatus. A user interface is configured to receive inputs from a user, and an information output device is configured to provide instructions to the user. The user interface and the information output device may be on a touchscreen display. The user inputs may include a search query. A controller may be adapted to determine search results corresponding to operational functions of the patient support apparatus responsive to the search query and to provide said search results to the user with the information output device. The user input may include shorthand commands corresponding to operational functions of the patient support apparatus. The user interface may include a voice actuation device configured to receive voice actuation commands from a user.

Abstract: A controller for a multiphase switching converter has a feedback pin, a reference pin, and a plurality of switching control pins. When the controller is a master controller, the reference pin provides a reference output signal based on a plurality of currents flowing through a plurality of switching circuits. When the controller is a slave controller, the feedback pin receives the reference output signal from the master controller, and the slave controller provides the plurality of switching control signals based on the plurality of currents flowing through the plurality of switching circuits, the reference output signal, and a feedback signal representative of an output voltage of the multiphase switching converter.

Abstract: The present disclosure provides acoustic model training methods and systems, and speech synthesis methods and systems. An acoustic model training method may include obtaining a plurality of training samples. Each of the plurality of training samples may include a sample text input, a sample emotion label corresponding to the sample text input, and a sample reference mel spectrum corresponding to the sample text input. The acoustic model training method may include inputting the plurality of training samples into a target model. The target model may include the acoustic model and an auxiliary module. The acoustic model training method may further include iteratively adjusting at least one model parameter of the acoustic model based on a loss target.

Abstract: A linkage mechanism includes: a base member; a first link rotatably connected to the base member, the first link defining a first arc-shaped guide groove centered on a pivot axis about which the first link rotates relative to the base member; a second link rotatably connected to the first link; a connecting member rotatably connected to the base member and the second link; an actuating mechanism including a linear actuator and a transmission member that is driven by the linear actuator, the transmission member having a first end rotatably connected to the output shaft, and a second end slidably received in the first arc-shaped guide groove. When the linear actuator drives the connecting member to extend and move, the second end of the transmission member abuts against one end of the first arc-shaped guide groove, which drives the first link to rotate relative to the base member.

Abstract: A drug transdermal delivery system comprises sponge spicules and a low-frequency sonophoresis device, the drug transdermal delivery system firstly applies a low-frequency sonophoresis to skin using the low-frequency sonophoresis device, a surface of the skin is then massaged with the sponge spicules.

Abstract: This application discloses a memory detection method and an electronic device. The method may include: The electronic device detects first memory occupied by a first process, where the first memory is a resident set size RSS; when the first memory is greater than a first threshold, the electronic device detects second memory occupied by the first process, where the second memory is a proportional set size PSS; and when the second memory is greater than the first threshold, the electronic device performs memory detection on the first process based on preset time.

Abstract: A controller for a multiphase switching converter has a turn-on control circuit and a switch control circuit. The turn-on control circuit provides a turn-on control signal based on a voltage sensing signal and a voltage reference signal. The switch control circuit generates a plurality of switch control signals based on the turn-on control signal and a plurality of current sensing signals. The switch control circuit regulates a plurality of switching circuits to operate in n groups, with each group comprising k switching circuits that are turned on at the same time, where n and k are integers greater than one. The switch control circuit sequentially turns on the n groups of switching circuits in response to pulses of the turn-on control signal.

Abstract: An electronic device may be provided with an antenna resonating element on a first substrate that is mounted to a second substrate. A signal conductor may be coupled to a feed terminal on the antenna resonating element. The signal conductor may include impedance matching structures for the antenna. The impedance matching structures may include an open transmission line stub, a grounded transmission line stub, and a phase shifting segment. The impedance matching structures may configure the antenna to exhibit a wide bandwidth in an ultra-wideband (UWB) frequency band. If desired, the signal conductor may have a phase-shifting segment configured to match a non-50 Ohm impedance of a radio-frequency front end coupled to the signal conductor.

Abstract: A computer based method for an electronic marketing campaign from a customer to a contact receives a campaign having an email message body and a historic profile of a previous campaign by the customer. The email message body includes text and image data. The email message body is preprocessed based upon the campaign and the historic profile to produce campaign training data. A neural network learning model is trained with the campaign training data. The neural network provides a subject line recommendation inference, and named entity recognition is performed on the subject line recommendation.

Abstract: Embodiments of the present disclosure provides a method and a system for image quality assessment. The method may include obtaining a first image of a target video, wherein the first image may be determined based on a target video frame in the target video; and determining a target image quality of the target video frame based on at least one of a first parameter and a second parameter of the first image, wherein, the first parameter may be determined based on an effective region in the first image, the second parameter may be determined based on a first similarity parameter between the first image and a second image, and the second image may be determined based on a video frame other than the target video frame in the target video.

Abstract: Methods, systems, and devices for abnormal sound detection are described. An audio recording of a mechanized environment may be obtained. First sounds extracted from the audio recording may be categorized into a set of categorical sounds. A library of first sound patterns may be generated using the categorical sound and based on second sounds extracted from the audio recording. The first sound patterns may include sequences of the categorical sounds. Audio data including audio signals capture by sensors in the mechanized environment may be received, and second sound patterns detected in the audio signals may be compared with the first sound patterns. Based on comparing the second sound patterns with the first sounds patterns, a sound pattern that is not in the library of the first sound patterns may be identified. An alarm may be generated based on detecting the sound pattern a threshold quantity of times.

Abstract: A multiphase power supply has an input terminal, an output terminal, a plurality of transformers, a plurality of switching circuits, and a control circuit. Secondary windings of the plurality of transformers are coupled in series with a compensation inductor. The plurality of switching circuits are coupled in parallel between the input terminal and the output terminal. Each of the plurality of switching circuits is coupled to the output terminal via a primary winding of a corresponding transformer. The control circuit senses an average current flowing through the plurality of switching circuits and a current flowing through the compensation inductor respectively, and corrects a sensing result of the average current based on the current flowing through the compensation inductor. The control circuit further provides a plurality of pulse width modulation signals based on the output voltage and the corrected sensing result to control the plurality of switching circuits.

Abstract: A curved display apparatus, includes a display panel, a backlight module, and a rear housing. The display panel and the rear housing are arranged opposite to each other in a first direction. The display panel includes a display area and a non-display area. The non-display area includes a connection portion, a first control portion, and a second control portion. The connection portion is located on the side of the first control portion away from the display area, and the second control portion is located on the side of the connection portion away from the display area. The connection portion is bendable such that the second control portion is folded to the side of the backlight module facing away from the display panel and is opposite to the first control portion, and the second control portion is connected to the backlight module.

Abstract: The present disclosure may provide a marking system for intestinal valve imaging. The marking system may obtain multiple intestinal images of an examined object. The marking system may perform intestinal valve segmentation on at least a portion of the multiple intestinal images to determine at least one independent intestinal valve. The marking system may also mark the at least one independent intestinal valve in the at least a portion of the multiple intestinal images.

Abstract: An acoustic structure includes a first core layer having a lattice structure between a first major surface and a second major surface, a first scrim coupled to the first major surface, a second scrim coupled to the second major surface, a second core layer having a lattice structure between a first major surface opposite a second major surface coupled to the second scrim, and a third scrim coupled to the second major surface of the second core layer. The acoustic structure has a bulk density of less than about 12 pounds per cubic foot.

Abstract: A stilbene derivative can be used in the prevention and/or treatment of ulcers. A compound of formula (I) or a pharmaceutically acceptable salt thereof can effectively prevent or treat ulcers, and in particular, has a curative effect on oral ulcers.

Abstract: Provided herein are systems and methods for the detection and quantification of a target protein via bioluminescence and/or bioluminescent resonance energy transfer (BRET). In particular, provided herein are assay methods using a multi-component biochemical system that assembles into a detectable in vitro chemical complex at a protein target of interest.