Abstract: In a virtual object interaction method, a first virtual object in a target virtual state is displayed in a virtual scene. A target interaction interface is displayed when a first interaction is performed on the first virtual object. The target interaction interface includes at least one interaction option corresponding to the target virtual state. First target interaction information is displayed when a second interaction is performed on a first interaction option of the at least one interaction option. The first target interaction information includes an interaction effect associated with the first interaction option for the first virtual object.

Abstract: In a method for displaying virtual characters in a virtual scene, the virtual scene is displayed in a first application on a first terminal. A first account corresponding to a first virtual character is logged into the first application. An interaction control element is displayed in the virtual scene. The interaction control element indicates interaction information between the first account and a second account in an interaction scene outside the virtual scene. In response to detecting a user operation on the interaction control element, a second virtual character corresponding to the second account is added to the virtual scene. Apparatus and non-transitory computer-readable storage medium counterpart embodiments are also contemplated.

Abstract: In a method for displaying messages in a virtual environment, a first view of a virtual scene is displayed including virtual objects corresponding to user accounts. A first message is received from a first user account corresponding to a first virtual object located outside the first view. A message notification graphical element is displayed in response to the first message. A first user input selecting the message notification graphical element is received. A second view of the virtual scene is displayed in response to the first user input. The second view includes the first virtual object and displays a message prompt corresponding to the first virtual object. The second view is different from the first view. Apparatus and non-transitory computer-readable storage medium counterpart embodiments are also contemplated.

Abstract: This application discloses a virtual character display method performed by a computer device and relates to the field of application programs supporting virtual worlds. The method includes: displaying a virtual world, the virtual world including at least two scene block buildings, and each of the scene block buildings being configured for displaying virtual characters in activity statuses of a same type; determining a first social status posted by a user of the computer device associated with a first user account of the virtual world; and displaying a first virtual character corresponding to the first user account in a first scene block building corresponding to the first social status, the first virtual character being in an activity status corresponding to the first social status and having a scene element matching the activity status corresponding to the first scene block building.

Abstract: The present invention discloses a preparation method of 3-(2, 2, 2-trifluoroethyl) pyrrolidine hydrochloride and(S)-3-(2, 2, 2-trifluoroethyl) pyrrolidine hydrochloride.

Abstract: The present disclosure discloses a propulsion method based on liquid carbon dioxide phase change and a propulsion device. The method includes the following steps of: accommodating carbon dioxide in a thermally insulated container in a liquid phase form; transiently heating to convert the carbon dioxide from a liquid phase to a gas phase; and jetting carbon dioxide gas after the phase change in a predetermined direction by a predetermined jet-out amount so as to obtain a propulsion force.

Abstract: The present application provides a method of signal transmission, which can improve transmission performance of an uplink signal between a touch screen and a stylus. The method is performed by a touch control chip in an electronic device, a touch screen of the electronic device includes a transmission channel for sending an uplink signal to a stylus, and the method includes: detecting whether a user's hand and/or the stylus approaches or touches the touch screen; determining a sending mode of the uplink signal according to a detection result, where the transmission channel for sending the uplink signal in the touch screen is different in different sending modes.

Abstract: Disclosed is a method of high-precision 3D reconstruction of existing railway track lines based on UAV multi-view images, including: acquiring initial data, acquiring a UAV image rail top centerline, calculating a rail top centerline based on a nonlinear least squares method, and calculating three-dimensional coordinates of the rail centerline. Based on the multi-view geometry principle in computer vision and photogrammetry, object space coordinates of the line can be directly calculated by using image information, which does not require outdoor workers to work online and can effectively improve the safety of railway operation line surveying and mapping. Therefore, this method has important engineering application value and application prospect.

Abstract: Some embodiments of the present disclosure provide a signal processing system, a chip and an active stylus. The signal processing system includes: a pre-amplifier circuit, configured to pre-amplify a received DSSS signal and output a pre-amplified DSSS signal; a low-pass filter circuit, configured to filter the pre-amplified DSSS signal and output a filtered DSSS signal; an analog-to-digital converter circuit, configured to sample the filtered DSSS signal and output a sampled DSSS signal; a noise detecting and filtering-out circuit, configured to filter out a noise in the sampled DSSS signal and output a noise-filtered DSSS signal; and a digital demodulation circuit, configured to demodulate the noise-filtered DSSS signal to output a demodulated signal. The signal processing system can have strong anti-interference ability and high sensitivity through the noise detecting and filtering-out circuit and automatically controlling a gain of the pre-amplifier circuit.

Abstract: A method for preparing fluorescent carbon quantum dots by using gas-liquid two-phase plasma is provided, which relates to the field of fluorescent carbon quantum technology. On the basis of liquid phase plasma, an inert gas is introduced to generate plasma by a gas-liquid two-phase discharge method. The introduction of inert gas facilitates the formation of discharge channels, reduces the difficulty of product synthesis, improves mass transfer rates of active particles, helps to improve synthesis rates of carbon nano-products, increases discharge contact area and enhances discharge stability. A high reaction efficiency and a short time consumption can be realized. A pulsed power supply is adopted for discharge, which has lower energy consumption compared with the direct current discharge. Moreover, the process is simple, raw materials are easy to obtain, and there is no need for catalysts, strong oxidants or strong corrosives, so the purity of the product maybe higher.

Abstract: A plasma carbon sequestration system and method are disclosed, wherein in the plasma carbon sequestration system, a first channel and a second channel of a plasma reactor are each provided with a flow controller, the plasma reactor is connected to a high voltage via a high voltage electrode and grounded via a ground electrode, water, or hydrogen, or methane is mixed with carbon dioxide respectively, to be introduced into the plasma reactor in a predetermined proportion under the control of the flow controllers, and a condenser is connected to the plasma reactor to condense a conversion product, and reactants which are not completely reacted from the plasma reactor, and is selectively used for circulation in the plasma reactor, thereby realizing environment-friendly treatment without a catalyst by a room temperature plasma technology.

Abstract: A device includes a first body, a second body, and a rotating shaft connection mechanism configured to connect the first body and the second body. The rotating shaft connection mechanism includes N rotating shaft components, a connection component, and N movable linear components corresponding to the N rotating shaft components. An ith linear component is wound around a rotating shaft of a corresponding ith rotating shaft component. A segment of extending linear component and a segment of extending linear component separately pass through the connection component. When the second body rotates relative to the first body, the segment of linear component and the segment of linear component have different rotation radii.

Abstract: The present disclosure discloses a propulsion method based on liquid carbon dioxide phase change and a propulsion device. The method includes the following steps of: accommodating carbon dioxide in a thermally insulated container in a liquid phase form; transiently heating to convert the carbon dioxide from a liquid phase to a gas phase; and jetting carbon dioxide gas after the phase change in a predetermined direction by a predetermined jet-out amount so as to obtain a propulsion force.

Abstract: The present application provides a method of signal transmission, which can improve transmission performance of an uplink signal between a touch screen and a stylus. The method is performed by a touch control chip in an electronic device, a touch screen of the electronic device includes a transmission channel for sending an uplink signal to a stylus, and the method includes: detecting whether a user's hand and/or the stylus approaches or touches the touch screen; determining a sending mode of the uplink signal according to a detection result, where the transmission channel for sending the uplink signal in the touch screen is different in different sending modes.

Abstract: Some embodiments of the present disclosure provide a method and a system for transmitting a signal, an active stylus, a touch screen and a readable storage medium. The method for transmitting a signal comprises: receiving a DSSS signal sent by the touch screen through a coupling capacitor formed between the active stylus and the touch screen, where the DSSS signal is a spread-spectrum coded signal to be transmitted; and parsing the received DSSS signal to obtain the signal to be transmitted. The method requires just a small amount of additional hardware resources and low power consumption, and can be well applied to an active stylus touch system.

Abstract: The present disclosure provides a detection circuit and an electronic device. The detection circuit includes a driving circuit, a cancelling circuit, and a switching circuit. Each driving module of the driving circuit is coupled to a detection capacitor for charging it; each cancelling module of the cancelling circuit is coupled to the detection capacitor to perform capacitance cancellation through two directions; each cancelling module of the cancelling circuit is coupled to the switching module to perform conversion of a capacitive signal and then output. The present disclosure can improve a detection accuracy of the capacitor.

Abstract: A device includes a first body, a second body, and a rotating shaft connection mechanism configured to connect the first body and the second body. The rotating shaft connection mechanism includes N rotating shaft components, a connection component, and N movable linear components corresponding to the N rotating shaft components. An ith linear component is wound around a rotating shaft of a corresponding ith rotating shaft component. A segment of extending linear component and a segment of extending linear component separately pass through the connection component. When the second body rotates relative to the first body, the segment of linear component and the segment of linear component have different rotation radii.

Abstract: Provided are a capacitance detection circuit (200). The capacitance detection circuit (200) is used for detecting capacitances of N capacitors to be detected, and includes: a reference capacitor, at least N?1 first front end circuits (210) for converting capacitance signals of the capacitors to be detected into first voltage signals and performing differencing on the first voltage signals, at least one second front end circuit (220) for converting capacitance signals of a capacitor to be detected and a reference capacitor into second voltage signals and performing differencing on the second voltage signals, and a processing circuit (230); and the processing circuit (230) determines a capacitance value of each of the N capacitors to be detected according to a first differential signal output by each of the first front end circuits (210) and a second differential signal output by each of the second front end circuits (220).

Abstract: Some embodiments of the present disclosure provide a signal processing system, a chip and an active stylus. The signal processing system includes: a pre-amplifier circuit, configured to pre-amplify a received DSSS signal and output a pre-amplified DSSS signal; a low-pass filter circuit, configured to filter the pre-amplified DSSS signal and output a filtered DSSS signal; an analog-to-digital converter circuit, configured to sample the filtered DSSS signal and output a sampled DSSS signal; a noise detecting and filtering-out circuit, configured to filter out a noise in the sampled DSSS signal and output a noise-filtered DSSS signal; and a digital demodulation circuit, configured to demodulate the noise-filtered DSSS signal to output a demodulated signal. The signal processing system can have strong anti-interference ability and high sensitivity through the noise detecting and filtering-out circuit and automatically controlling a gain of the pre-amplifier circuit.

Abstract: Some embodiments of the present disclosure provide a method and a system for transmitting a signal, an active stylus, a touch screen and a readable storage medium. The method for transmitting a signal comprises: receiving a DSSS signal sent by the touch screen through a coupling capacitor formed between the active stylus and the touch screen, where the DSSS signal is a spread-spectrum coded signal to be transmitted; and parsing the received DSSS signal to obtain the signal to be transmitted. The method requires just a small amount of additional hardware resources and low power consumption, and can be well applied to an active stylus touch system.