Abstract: This disclosure provides a training method and apparatus, and relates to the artificial intelligence field. The method includes feeding a primary video segment, representative of a concatenation of a first and a second nonadjacent video segments obtained from a video source, to a deep learning backbone network. The method further includes embedding, via the deep learning backbone network, the primary video segment into a first feature output. The method further includes providing the first feature output to a first perception network to generate a first set of probability distribution outputs indicating a temporal location of a discontinuous point associated with the primary video segment. The method further includes generating a first loss function based on the first set of probability distribution outputs. The method further includes optimizing the deep learning backbone network, by backpropagation of the first loss function.

Abstract: The present disclosure provides a method of smart gas terminal linkage disposal for indoor safety and an Internet of Things system. The method is implemented by a smart gas indoor safety management sub platform. The method includes obtaining monitoring information and user description information from a smart gas data center, the monitoring information including alarm information and gas terminal monitoring data, the monitoring information being obtained from a smart gas object platform through a smart gas sensor network platform, the user description information including user-defined alarm information uploaded by a user, and the user description information being obtained from a smart gas user platform through a smart gas service platform; determining a cause of gas leakage based on the monitoring information and the user description information; and determining a target solution based on the cause of gas leakage.

Abstract: A flip-chip light-emitting device includes a light-emitting unit, a first electrode, and a second electrode. The light-emitting unit includes a first type semiconductor layer, an active layer, and a second type semiconductor layer. The first electrode is disposed on the light-emitting unit and electrically connected to the first type semiconductor layer. The second electrode is disposed on the light-emitting unit and electrically connected to the second type semiconductor layer. The first electrode or the second electrode is free of gold, and includes an aluminum layer and at least one platinum layer disposed on the aluminum layer opposite to the light-emitting unit.

Abstract: A photovoltaic system, an inverter, and a direct current electric arc detection method. The system includes an inverter, a controller, and at least two converters. When detecting an electric arc, the controller controls an input current of the inverter to decrease to extinguish the arc. After the arc is extinguished, the controller controls an output voltage of at least one photovoltaic string to decrease to a first preset voltage, where the first preset voltage is less than an input voltage of the inverter when the electric arc is detected, or controls a maximum value of an output current of the at least one photovoltaic string to be a second preset current, where the second preset current is less than the input current of the inverter when the electric arc is detected. In the foregoing two recovery manners, no electric arc recurs.

Abstract: An engine including a main fuel injection valve, a pilot fuel injection valve, a liquid fuel supply rail pipe, and a pilot fuel supply rail pipe. The main fuel injection valve supplies liquid fuel from the liquid fuel supply rail pipe to a combustion chamber during combustion in a diffusion combustion system. The pilot fuel injection valve supplies pilot fuel from the pilot fuel supply rail pipe to the combustion chamber in order to ignite gaseous fuel during combustion in a premixed combustion system. The liquid fuel supply rail pipe is disposed at one side of an imaginary vertical plane including an axis of a crank shaft. The pilot fuel supply rail pipe is disposed at the side of the imaginary vertical plane at which the liquid fuel supply rail pipe is disposed.

Abstract: Disclosed is a Gabor wavelet-fused multi-scale local level set ultrasonic image segmentation method. In the method, non-uniformity of the grayscale of an ultrasonic image is taken as a texture having cluttered directions, the multi-directional property of Gabor wavelets is used to process the image, and intermediate images in different filtering directions are fused by taking maximum values, so as to obtain an intermediate image having a weakened texture effect and an enhanced difference between a foreground and a background. For the feature of a weak edge of an ultrasonic image, a concept of multi-scale is used to improve the conventional LIC method, Gaussian convolution kernels having different variances are set, and a final edge is obtained by means of average fusion.

Abstract: The invention discloses a lithium electrode. The electrically conductive structure layer has a recess with one-side opening, and the lithium metal layer is disposed on the bottom of the recess. The solid electrolyte layer and the electrolyte storage layer are disposed thereon sequentially. When the lithium metal is plated, the plated lithium metal is restricted by the solid electrolyte layer to push and compress the electrolyte storage layer. Therefore, the growth of the lithium dendrites is limited efficiently. The penetration through issue of the lithium dendrites will not be occurred so that the safety of the lithium metal battery is improved greatly.

Abstract: Provided is a system for monitoring radiation based on a monitoring post, the system implemented to perform aerial radiation measurement for the altitude in the vertical direction based on the location in which monitoring posts are installed, thereby efficiently predicting the movement path and the contaminated area of radioactive materials, and efficiently distinguishing radioactive leakage from the ground surface and radioactive materials that float and move from the outside.

Abstract: Embodiments of the disclosure provide an optical sensing system containing a conical lens pair, and an optical sensing method using the same. For example, the optical sensing system includes a transmitter configured to emit an optical signal toward an environment surrounding the optical sensing system. The transmitter includes a laser emitter configured to emit the optical signal, a beam shaper configured to receive the optical signal emitted by the laser emitter and redistribute a light intensity of the received optical signal away from a center of the optical signal, and a steering device configured to receive the redistributed optical signal output from the beam shaper and direct the redistributed optical signal toward the environment. The optical sensing system further includes a receiver configured to receive the optical signal returning from the environment.

Abstract: In a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes, a configuration that is simple, and can suppress vibrations in a resonance frequency in the plurality of vibration modes is provided. A control device is a resonance suppression control device that controls suppression of vibrations in a resonance frequency in each vibration mode of a control target having a plurality of vibration modes. The control device includes a plurality of feedback loops that provide negative feedback of output of the control target corresponding to the plurality of vibration modes to an input side. The plurality of feedback loops respectively include band-pass filters that extract one or more vibration modes from the plurality of vibration modes, phase compensators, and amplitude adjusters. The band-pass filters and the phase compensators function as differentiators.

Abstract: The present disclosure provides a pixel circuit and a display panel. The pixel circuit controls a conduction time of the driving module according to a connected triangle-wave analog signal, a time controlling analog signal, and a brightness control analog signal connected through an analog comparator, and controls a conduction degree of the driving module according to a brightness control analog signal connected through the analog comparator; thus a light-emitting time and/or luminous brightness of a light-emitting module is controlled, and multi-gray-scale display with a simpler pixel circuit structure is realized.

Abstract: The present disclosure provides a MEMS micromirror with a high duty cycle, a micromirror array, and a preparation method thereof, wherein a plurality of first movable combs and a plurality of first fixed combs of the MEMS micromirror are located under the silicon layer of the reflector, which improves the duty cycle and effectively reduces the size of the MEMS micromirror while achieving large angle deflection in two directions. The silicon layer of the reflector has a reinforcing rib underneath, which effectively improves surface smoothness of the MEMS micromirror when the latter is still or moving. In addition, the MEMS micromirror has a variety of electrode lead-out forms including a double-sided electrode structure, and the electrode lead-out form during actual implantation can be selected as needed, which is conducive to the commercialization of MEMS micromirrors and micromirror arrays.

Abstract: Disclosed is a filler piece mounting assembly for a lifting column. The lifting column includes a first casing and a second casing sliding in the first casing. The filler piece mounting assembly includes a resilient filler piece and a fixed frame for fixing the resilient filler piece. The resilient filler piece is disposed outside an outer wall of the second casing and axially fixed relative to the first casing. The fixed frame is disposed at a front end of the first casing and moves relative to the first casing. A first inclined surface is disposed on an outside of the resilient filler piece. The fixed frame includes an extrusion part for extruding the first inclined surface, and the extrusion part extrudes the first inclined surface to radially deform the resilient filler piece to adjust a clearance between the resilient filler piece and the second casing.

Abstract: Embodiments of the disclosure provide a method for forming an optical sensing device for a receiver in an optical sensing system. According to the method, a light concentrator is formed in a carrier wafer. The carrier wafer is bonded with a detector wafer. The detector wafer has a photodetector such that the light concentrator aligns with and covers the photodetector. A portion of the carrier wafer is removed to expose the light concentrator and the photodetector.

Abstract: A method and system for analyzing the error of a measurement domain based on a single load jump and a computer-readable storage medium are provided. According to the method and the system, high-density measurement is performed on the load of a master meter and sub-meters in a measurement domain for a long time to obtain massive load data. After that, based on a single load jump, a load measurement difference of the master meter before and after the jump, and a load measurement difference of a jumping sub-meter before and after the jump are obtained. The error deviation degree of the jumping sub-meter relative to the master meter is uniquely defined. After statistical data of error deviation degrees of all the sub-meters relative to the master meter is obtained, error analysis is performed on the whole measurement domain based on the statistical data.

Abstract: A method and an apparatus for recommending a travel mode, an electronic device; and a storage medium are provided. An implementation is: receiving a request from a user for querying a first point of interest; analyzing a travel type of the user based on the request; obtaining an alternative travel mode based on the travel type in combination with user information; calculating a travel cost corresponding to the alternative travel mode; and recommending at least one travel mode for the user according to the travel cost.

Abstract: Embodiments of the disclosure provide an optical sensing system for two-dimensional (2D) environmental sensing, an optical sensing method for the optical sensing system, and a transmitter. The optical sensing system includes a tunable laser source configured to emit optical signals with varying wavelengths. The optical sensing system further includes a one-dimensional (1D) grating scanner configured to rotate around a rotational axis to scan the optical signals with the varying wavelengths in a first dimension towards an environment surrounding the optical sensing system. The 1D grating scanner includes a grating structure configured to scan the optical signals with the varying wavelengths along different directions in a second dimension towards the environment at each rotation angle. The optical sensing system additionally includes a receiver configured to receive at least a portion of the optical signals with the varying wavelengths reflected from the environment.

Abstract: A method of treating an asset, an electronic device, and a storage medium, which relate to a field of computer technology, in particular to artificial intelligent financial technology. The method includes: acquiring a target rate of return; adjusting a value of at least one asset in a first asset set so that a predicted rate of return for the adjusted first asset set is greater than or equal to the target rate of return; and obtaining a second asset set according to the adjusted first asset set, so that a relationship between a yield increment and a risk increment meets a preset relationship, wherein the yield increment is an yield increment of the second asset set relative to the adjusted first asset set, and the risk increment is an risk increment of the second asset set relative to the adjusted first asset set.

Abstract: Embodiments of the disclosure provide a transmitter containing an omni-view peripheral scanning system, an omni-view peripheral scanning system, and an optical sensing method. The optical sensing system includes an optical source configured to sequentially emit optical signals. The optical sensing system further includes an omni-view peripheral scanning system configured to receive the optical signals and sequentially direct the optical signals towards an environment following a peripheral scanning pattern. The peripheral scanning system may include a scanning mirror and a top reflector. Each optical signal may pass through the top reflector towards the scanning mirror, where the scanning mirror is configured to reflect the optical signal back onto the top reflector following a spiral pattern and the top reflector is configured to direct the optical signal towards the environment.

Abstract: A heat dissipation mechanism for connecting with at least one heat source includes a main body and at least one heat dissipation block. The main body is made by a material of alloy or metal through a die casting process and has a first side and a second side that are corresponding to each other. The heat dissipation block is disposed on the first side of the main body, made by a first high thermal conductivity material, and having a connecting surface that protrudes outside the main body. The connecting surface directly or indirectly connects with the heat source. The heat dissipation block connects with the main body by means of a first connecting structure, the first connecting structure having a first pair of interlock structures that are disposed in the main body and the heat dissipation block respectively.