Abstract: Disclosed is a voltage-controlled oscillator (VCO) including at least an inductor-capacitor (LC) resonant circuit (including varactors that receive a variable input voltage), cross-coupled transistors connected to the LC resonant circuit, and an LC filter connected to a shared source node of the cross-coupled transistors. The cross-coupled transistors can have back gates connected to receive a variable back gate bias voltage (Vbg), which is dependent on Vin to ensure that an optimal relationship between the oscillating frequency (?0) of the LC resonant circuit and the resonant frequency (?1) of the LC filter is continuously maintained to minimize phase noise. For example, if Vin is increased to increase varactor capacitance and, thereby decrease ?0, then Vbg is also increased, thereby increasing the voltage (Vs-s) and the capacitance (Cs-s) on the shared source node connected to the LC filter, decreasing ?1, and maintaining an optimal relationship of ?0=?1/2.

Abstract: A lithium-ion battery negative electrode with improved temperature rise performance, and a lithium-ion battery. The negative electrode comprises a negative electrode current collector and a negative electrode material applied to the negative electrode current collector, the negative electrode material containing a conductive agent, the conductive agent comprising SP and CNT, wherein the mass ratio of SP to CNT is 30-1500, preferably 35-100, more preferably 40-70, and further preferably 50-55. The lithium-ion battery comprises a positive electrode, a negative electrode, an electrolyte and a casing, wherein the negative electrode is the negative electrode for a lithium-ion battery as described above. In the present invention, the temperature rise performance of a lithium-ion battery is improved by using a variety of conductive agents and adjusting types and proportions within the conductive agent, without increasing the proportion of conductive agent in the electrode material formula.

Abstract: A dual-port optical transmitting and receiving assembly, comprising an optical transmitting group, an optical circulator, a light turning element, a first input/output terminal, a second input/output terminal, and an optical receiving group. The first input/output terminal and the second input/output terminal are disposed in a spaced arrangement. A first signal light emitted from the optical transmitting group passes through the optical circulator and enters the first input/output terminal. A second signal light emitted from the optical transmitting group passes through the optical circulator. Then, it enters the second input/output terminal after being reflected by the light turning element. A third signal light from the first input/output terminal passes through the optical circulator and enters the optical receiving group. A fourth signal light from the second input/output terminal is reflected by the light turning element and enters the optical receiving group after passing through the optical circulator.

Abstract: A crimping system includes a base, a fixing device, and a waste recycling device. The base defines a throwing port that allows waste materials to pass through. The fixing device is fixedly installed on the base and adapted to fix a flexible flat piece. The crimping device is movably installed on the base and is movable in two perpendicular, horizontal directions. The crimping device is adapted to crimp a terminal onto the flexible flat piece when it is moved to a predetermined crimping position aligned with the crimping part on the flexible flat piece. The waste recycling device is fixedly installed on the crimping device and moves synchronously with the crimping device. The waste recycling device is adapted to recover waste materials generated during crimping of the terminal, and to eject recovered waste materials through the throwing port when it is moved to a predetermined position aligned with the throwing port.

Abstract: A fixing device adapted to fix a flexible flat piece comprises a support platform adapted to support the flexible flat piece and a fixture adapted to clamp the flexible flat piece onto the support platform. The support platform includes a vacuum chamber formed therein having multiple vacuum suction holes formed in the top wall of the vacuum chamber. The vacuum suction holes are adapted to secure the flexible flat piece on the top surface of the support platform to prevent the flexible flat piece from being moved as it is clamped by the fixture.

Abstract: A method of determining interaction information, an electronic device and a storage medium are provided, which relates to a field of artificial intelligence technology, in particular to a large model, a generative model, an NLP, an intelligent search and other fields. An implementation is to determine a plurality of questioning dimensions according to query information of a subject and historical query information, where each questioning dimension includes a dimension name and a plurality of options; determine a target questioning dimension from the plurality of questioning dimensions according to evaluation values of the plurality of questioning dimensions and whether semantic information of the plurality of questioning dimensions are consistent with semantic information of a query result associated with the query information; and determine the interaction information according to the dimension name and the plurality of options in the target questioning dimension.

Abstract: The present disclosure provides a DNAzyme and use thereof. The present disclosure also provides a system, comprising one or more catalytic domains and one or more substrate domains.

Abstract: An image data processing method, a system and an electronic device are provided. The method includes: recording to-be-processed database data as a target image set; performing sharpness calculation on target images in the target image set by a weighted gradient algorithm, and removing, if sharpness of at least one target image is smaller than a threshold, the at least one target image from the target image set; performing sharpness enhancement processing on remaining target images in the target image set; extracting feature points in the target images in the target image set and the contrast image, one by one or at intervals; and comparing and judging similarity between the target images and the contrast image by a similarity algorithm, and inputting similar target images into classified storage spaces.

Abstract: The present disclosure relates to parameter optimization. A parameter optimization method may include acquiring an initial exposure parameter usable by the medical device for performing exposure; acquiring contour information of a test subject and initial relative position information of the test subject relative to the examination component; determining an estimated attenuation amount of rays passing through the test subject based on the initial relative position information, contour information of the test subject, and real-time position information of the examination component, the estimated attenuation amount representing the degree of attenuation of rays from the radiation source after passing through the test subject, and the real-time position information of the examination component being position information of the examination component acquired in real time; and updating the initial exposure parameter based on the estimated attenuation amount.

Abstract: An imaging system and a control method and apparatus therefor, a computer medium, and a program product. The medical imaging system includes an examination component operable to align a ray field with a target region of a test subject. The method includes: acquiring contour information of the test subject and initial position information of the test subject relative to the examination component; acquiring real-time position information of the examination component; determining a part of the target region that is located in the ray field based on the contour information of the test subject, the initial position information of the test subject relative to the examination component, and the real-time position information of the examination component; determining a target attitude of a filter in a collimator assembly of the medical imaging system based on said part; and controlling the filter to move toward the target attitude.

Abstract: The present disclosure provides a group training action correction system and method combining face and gesture recognition, wherein the system includes an individual action correction moment determination module, which is configured to determine a nearest individual action correction moment after a current training progress on a preset training progress axis; and an individual action correction module, which is configured to correct and prompt individually action for the action correction object based on a standard gesture, an action to be corrected, and a personnel identity when entering the individual correction moment.

Abstract: An image data processing method, a system and an electronic device are provided. The method includes: recording to-be-processed database data as a target image set; performing sharpness calculation on target images in the target image set by a weighted gradient algorithm, and removing, if sharpness of at least one target image is smaller than a threshold, the at least one target image from the target image set; performing sharpness enhancement processing on remaining target images in the target image set; extracting feature points in the target images in the target image set and the contrast image, one by one or at intervals; and comparing and judging similarity between the target images and the contrast image by a similarity algorithm, and inputting similar target images into classified storage spaces.

Abstract: An I/O module includes an I/O base comprising a printed circuit board including I/O circuitry. A removable terminal block is removably connected to and selectively separable from the I/O base. The removable terminal block includes a plurality of field wiring terminals. The I/O module further includes a plurality of contact pairs each including: (i) a first constituent contact connected to the removable terminal block and electrically connected to one of said terminals; (ii) a second constituent contact connected to the I/O base and electrically connected to the I/O circuitry. A first CJC sensor is connected to the I/O base and is operatively connected to the I/O circuitry. The first CJC sensor is thermally associated with and adapted to sense a temperature of at least a first one of said second constituent contacts.

Abstract: This application discloses a control method, system, device, and storage medium for a pan-tilt camera device. The method comprises: obtaining the current battery level and current environment of the pan-tilt camera device; after determining that both the current battery level and current environment meet preset conditions, controlling the pan-tilt camera device to rotate within the monitoring range to a target angle, so that the photovoltaic panel is at the optimal charging angle, achieving a balance between charging and monitoring, where the target angle is determined based on the charging current value and charging voltage value of the photovoltaic panel. This method can achieve a balance between charging and monitoring for the pan-tilt camera device.

Abstract: Techniques for detecting and remediating logistical operational delays are presented. The techniques can include: obtaining electronic operational feedback associated with logistics in a geographical region, where the electronic operational feedback includes at least one of: customer email messages, customer phone messages, web-based customer reviews, delivery delay times, social media communication issue resolution times, or employment satisfaction ratings; generating a heatmap representing the electronic operational feedback for the geographical region, where an operational issue hotspot corresponding to a logistical node in the geographic region is displayed; and remediating an operation issue at the logistical node in the geographic region that corresponds to the operational issue hotspot.

Abstract: A relay amplification method and system, and a storage medium are provided in the present disclosure. The relay amplification system includes a first antenna, a first RF transceiver, a second RF transceiver, and a second antenna which are connected in sequence, and the relay amplification method includes: determining whether power of a first I/Q signal output by the first RF transceiver changes with respect to power of a second I/Q signal output by the first RF transceiver; and if yes, controlling a gain of power adjustment for the first RF transceiver and a gain of power adjustment for the second RF transceiver respectively according to a power variation of the first I/Q signal, to make the power of the first I/Q signal remain unchanged with respect to the power of the second I/Q signal and a link gain between the first antenna and the second antenna remain unchanged.

Abstract: Provided is a field space data normalization processing method applicable to GBP algorithm, including the steps of: performing vector matrix transformation, by inputting first vector data and transforming it into a first matrix expression; performing first matrix transformation, by transforming the first matrix expression into a second matrix expression; providing a means of normalization; performing normalization and third matrix transformation, by performing data normalization and transformation on the second matrix expression to obtain a third matrix expression; transforming a third matrix and outputting second vector data, by transforming the third matrix expression into a fourth matrix expression and then transforming it into second vector data and outputting it. Therefore, normalization of camera pose data in SLAM is achieved.

Abstract: An isolated power converter can include: a primary side having a primary winding and a primary power transistor; a secondary side having a secondary winding and a secondary power transistor; a secondary control circuit configured to change a voltage across the secondary winding to change a voltage across the primary winding during a period when both the primary power transistor and the secondary power transistor are in a turn-off state; and a primary control circuit configured to control switching states of the primary power transistor, such that an output signal of the isolated power converter matches an output demand.

Abstract: A synchronous rectification control circuit for controlling a switching circuit comprising a synchronous rectifier switch, can include: a drive circuit configured to generate a drive signal to control switching states of the synchronous rectifier switch; and a voltage regulation circuit configured to control the drive circuit to adjust an amplitude of the drive signal to decrease to a preset threshold in an adjustment state when a drain-source voltage of the synchronous rectifier switch is greater than an adjustment threshold before the synchronous rectifier switch is turned off, where a time that the voltage regulation circuit is in the adjustment state is an adjustment time.

Abstract: Provided are a communication control method, a communication device and a non-transitory computer-readable storage medium. The method includes: performing, by a 5G chip, cell search and synchronization with a base station; acquiring, by the 5G chip, timeslot ratio information of an uplink timeslot and a downlink timeslot; and controlling, by a 4G chip, on-off states of an amplification uplink and an amplification downlink based on the timeslot ratio information.