Abstract: Some embodiments of the disclosure provide a decellularized heart valve (DHV) composite, a preparation method of the DHV composite, and a use of the DHV composite. In some examples, the preparation method of the DHV composite includes the following steps: S1, conducting a reaction I on a DHV with a copper chloride-dopamine hydrochloride mixed solution to obtain a copper ion-modified DHV; and S2, conducting a reaction II on the copper ion-modified DHV with a GDF11 solution to obtain the DHV composite. In other examples, the present disclosure provides a use of the DHV composite in preparation of a tissue-engineered heart valve (TEHV). In further examples, the TEHV is a heart valve (HV) with remodeling and regeneration capabilities.

Abstract: A contact-based inductive sensing technique for contextual interactions on interactive fabrics is described. The technique recognizes conductive objects (mainly metallic) that are commonly found in households and workplaces, such as keys, coins, and electronic devices. An apparatus includes an array of a plurality of six by six spiral-shaped coils including conductive thread, sewn onto a four-layer fabric structure. The coil shape parameters were determined based on maximizing the sensitivity based on a new inductance approximation formula. Through a ten-participant study, the performance of sensing technique across 27 common objects was evaluated. A 93.9% real-time accuracy for object recognition resulted.

Abstract: A retrieval method and a retrieval apparatus for reservoir water storage. The retrieval method includes the following steps. A synthetic aperture radar (SAR) image sequence of a target local waters in a target reservoir is acquired. A water area sequence of the target local waters is determined according to the SAR image sequence. A first relationship between a water level of the target reservoir and a water area of the target local waters of the target reservoir is obtained. The water area sequence is converted into a target water level sequence according to the first relationship. And a water storage sequence of the target reservoir is obtained according to a water level-water storage relationship curve and the target water level sequence.

Abstract: The present disclosure relates to a system for eyes-free text entry. The system may include a wearable device having a display and processing circuitry configured to receive a haptic input provided to a keyboard mounted on a finger of a user, the haptic input being an indication of an alphabetical letter, generate a list of candidate words based on the received haptic input, each candidate t word of the list of candidate words being associated with a probability thereof, display the generated list of candidate words to the user via the display of the wearable device, receive a selection of a particular candidate word of the list of candidate words, and append the particular candidate to a present sentence structure, wherein the keyboard has a layout based on a spatial model reflecting spatial awareness, by the user, of key locations on the finger.

Abstract: A finger device initiates actions on a computer system when placed in contact with a surface. The finger device includes instrumentation that captures images and gestures. When in contact with a surface, the finger device captures images of the surface and gestures made on the surface. The finger device also transmits the images and gesture data to the computer system. An application on the computer system matches the images received from the finger device to a representation of the surface, identifies an action associated with the surface representation and gesture, and executes the action. Instrumenting the finger instead of the surface, allows a user to configure virtually any surface to accept touch input.

Abstract: The present disclosure relates to a system for eyes-free text entry. The system may include a wearable device having a display and processing circuitry configured to receive a haptic input provided to a keyboard mounted on a finger of a user, the haptic input being an indication of an alphabetical letter, generate a list of candidate words based on the received haptic input, each candidate word of the list of candidate words being associated with a probability thereof, display the generated list of candidate words to the user via the display of the wearable device, receive a selection of a particular candidate word of the list of candidate words, and append the particular candidate to a present sentence structure, wherein the keyboard has a layout based on a spatial model reflecting spatial awareness, by the user, of key locations on the finger.

Abstract: Provided are a driving method, a gate drive unit and a display touch device. The driving method is applied to the gate drive unit in the display touch device. The gate drive unit includes at least one pull-down circuit. The pull-down circuit is coupled with a pull-up node and a pull-down voltage terminal, and is configured to control connection or disconnection between the pull-up node and the pull-down voltage terminal; one frame of image display time includes a display phase and a touch phase that are alternately set, and at least one of the touch phase is set between two adjacent display phases. The driving method includes: during the touch phase, controlling, by the at least one pull-down circuit, the disconnection between the pull-up node and the pull-down voltage terminal. The problem of a screen flashing phenomenon of existing display touch devices during the touch phase is solved.

Abstract: A pixel circuit, a display substrate, a display device and a driving method are provided. The pixel circuit includes a data writing sub-circuit and a driving sub-circuit, and the data writing sub-circuit is connected to a scan signal terminal, a control signal terminal, a data signal terminal and a drive sub circuit. The data writing sub-circuit is used to output a data signal from the data signal terminal to the control node in response to a control signal provided by the control signal terminal and a scan signal provided by the scan signal terminal. The driving sub-circuit is connected to the control node, a power signal terminal and a light-emitting element, respectively, and is used to drive the light-emitting element to emit light in response to a potential of the control node and a power signal provided by the power signal terminal.

Abstract: Aspects of the disclosure provide a sensing apparatus including a sensing device, a memory, and processing circuitry. The sensing device includes resonators having respective resonant frequencies. The resonators include an array of inductive coils positioned on a surface of the apparatus. The sensing device can output a signal indicating changes of the resonant frequencies caused by presence of an object proximate to the surface. The memory stores reference signals corresponding to reference objects. Each reference signal indicates changes of the resonant frequencies caused by the respective reference object proximate to the surface. The processing circuitry can receive, from the sensing device, a particular signal indicating changes of the resonant frequencies caused by presence of a particular object proximate to the surface. The processing circuitry compares the particular signal with the stored reference signals of the reference objects to determine an identity of the particular object.

Abstract: Provided are a driving method, a gate drive unit and a display touch device. The driving method is applied to the gate drive unit in the display touch device. The gate drive unit includes at least one pull-down circuit. The pull-down circuit is coupled with a pull-up node and a pull-down voltage terminal, and is configured to control connection or disconnection between the pull-up node and the pull-down voltage terminal; one frame of image display time includes a display phase and a touch phase that are alternately set, and at least one of the touch phase is set between two adjacent display phases. The driving method includes: during the touch phase, controlling, by the at least one pull-down circuit, the disconnection between the pull-up node and the pull-down voltage terminal. The problem of a screen flashing phenomenon of existing display touch devices during the touch phase is solved.

Abstract: A signal adjusting device and method, and a test equipment. The signal adjusting device includes: a level controller, a level circuit, a comparison circuit and a selecting circuit. The level circuit is electrically connected with the selecting circuit; the level controller is configured to perform a level adjustment to a first signal, so as to generate a level signal, and the generated level signal is outputted by the level circuit; the comparison circuit is configured to: determine that the level signal meets a preset condition, and generate and output a corresponding feedback signal to the selecting circuit, in response to determining that the level signal satisfies the preset condition; and the selecting circuit is configured to output, as an adjusted signal, the level signal corresponding to the feedback signal.

Abstract: The present disclosure relates to a method and a device for monitoring the water volume change, and a computer device and a storage medium. The method includes: acquiring a lake shoreline change sequence, a lake area change sequence, and a combined altimetry water level sequence; obtaining a lake water level sequence based on the combined altimetry water level sequence and the lake shoreline change sequence; calculating a first regressive relationship between the lake water volume and the lake water level based on the lake area change sequence and the lake water level sequence; and obtaining a lake water volume change sequence based on the lake water level sequence and the first regressive relationship between the lake water volume and the lake water level.

Abstract: A scan driving circuit and a driving method thereof, and a display device are disclosed. The scan driving circuit includes: a control circuit, a scanning circuit group and a first processing circuit group. The control circuit is configured to generate and output a keyword signal to the first processing circuit group, to control a scan order of respective scanning circuits in the scanning circuit group; the first processing circuit group is configured to generate a scan enable signal according to the keyword signal, and output the scan enable signal to a scanning circuit corresponding to the keyword signal in the scanning circuit group.

Abstract: A pixel driving circuit includes a first switching element, a second switching element, a first compensation element, a second compensation element, a driving transistor, a capacitor, and a third switching element.

Abstract: A disclosed circuit prototyping system includes a hardware interface module configured for electronically connecting to a physical electronic device, a virtual circuit design interface to construct a virtual circuit for a plurality of virtual circuit devices including a virtual counterpart of the physical electronic device, and a circuit simulator configured to simulate the virtual circuit including communicating data with the physical electronic device by way of communication with the hardware interface module.

Abstract: A gate drive circuit, a touch display device and a driving method are provided. The gate drive circuit includes a plurality of cascaded shift register units and a voltage stabilization circuit. Each of the plurality of cascaded shift register units includes a touch scanning control terminal; and the voltage stabilization circuit is connected to a first shift register unit and at least one second shift register unit after the first shift register unit, of the plurality of cascaded shift register units, and configured to compensate a level of a first node of the group of second shift register units in response to the touch scanning control signal.

Abstract: The present application discloses a shift-register circuit configured as one of a plurality of shift-register units cascaded in series. The shift-register circuit includes a pull-up sub-circuit coupled to a pull-up node, a first clock port, and an output port. The pull-up sub-circuit is configured to pass a first clock signal from the first clock port to the output port when the pull-up node is set to a turn-on voltage. Additionally, the shift-register circuit includes a chamfering sub-circuit coupled to the pull-up node, the first clock port, a chamfering clock port, and the output port. The chamfering sub-circuit is configured to pass a chamfering clock signal from the chamfering clock port to the output port. The chamfering clock signal is at the turn-on voltage simultaneously with the first clock signal and becomes a turn-off voltage slightly earlier in time than the first clock signal.

Abstract: The present disclosure provides a pixel driving circuit and a driving method thereof, a display panel, and a display device.

Abstract: A signal adjusting device and method, and a test equipment. The signal adjusting device includes: a level controller, a level circuit, a comparison circuit and a selecting circuit. The level circuit is electrically connected with the selecting circuit; the level controller is configured to perform a level adjustment to a first signal, so as to generate a level signal, and the generated level signal is outputted by the level circuit; the comparison circuit is configured to: determine that the level signal meets a preset condition, and generate and output a corresponding feedback signal to the selecting circuit, in response to determining that the level signal satisfies the preset condition; and the selecting circuit is configured to output, as an adjusted signal, the level signal corresponding to the feedback signal.