Abstract: The present invention discloses a train compartment vibration monitoring method and vibration signal feature library establishment and application methods. The non-intrusive train compartment vibration monitoring method only obtains vibration signals of a main measurement point in a train compartment during actual monitoring. The method accurately and truthfully reflects the relationship between the position of a vibration source and the phase offset and amplitude attenuation, can monitor the vibration of an unknown vibration source, and can identify the abnormal vibration to provide a basis for abnormal vibration processing.

Abstract: A method is provided. The method includes receiving a first dimension set, extracting a first latent feature set from the first dimension set, training a first base predictor based on the first feature set, generating a second dimension set based on the first dimension set, the second dimension set having fewer dimensions than the first dimension set, extracting a second latent feature set from the second dimension set, training a second base predictor based on the second feature set, and generating a traffic prediction based on the first base predictor and the second base predictor.

Abstract: The present application discloses a method for calibrating a parameter error of an electron probe microanalysis instrument. A one-dimensional grating standard template is prepared based on atom lithography technology. A theoretical grating period D of the one-dimensional grating standard template is calculated. The one-dimensional grating standard template is statically placed on a stage of the electron probe microanalysis instrument. The electron probe microanalysis instrument scans the one-dimensional grating standard template on the stage, performs image acquisition and measurement on a grid distance of the one-dimensional grating standard template to obtain a grating scanning distance measurement value L, and records a magnification ratio at this time. A calibration factor K under the magnification ratio is calculated according to D and L.

Abstract: A startup stage protection device used in Electric Multiple Unit (EMU) train coupler experiment is provided between two test cars. The startup stage protection device is arranged between and tightly abuts two test cars at the starting stage of the experiment to receive a compressing force in place of the coupler. The startup stage protection device separates from the two test cars after the end of the starting stage.

Abstract: The present application disclosed a delivery apparatus and a control device. The control device includes a fixing unit and a movable unit, the fixing unit includes a screw rod provided with an accommodating hole and a sliding groove communicating with the accommodating hole; the movable unit includes a connecting member, a first handle, a mating member, and a control member. The control device can control the fast movement and the slow movement of the connecting member, thereby facilitating the realization of the speed control of the release of the vascular stent. The delivery apparatus uses the control device.

Abstract: The present invention discloses a train compartment vibration monitoring method and vibration signal feature library establishment and application methods. The non-intrusive train compartment vibration monitoring method only obtains vibration signals of a main measurement point in a train compartment during actual monitoring. The method accurately and truthfully reflects the relationship between the position of a vibration source and the phase offset and amplitude attenuation, can monitor the vibration of an unknown vibration source, and can identify the abnormal vibration to provide a basis for abnormal vibration processing.

Abstract: A medical dental grinding apparatus comprises an apparatus body, wherein an air pipeline, a clamping mechanism, and a grinding mechanism are provided in the apparatus body; the air pipeline includes an air inlet pipeline, an air outlet pipeline, and a U-shaped connection pipeline; a silencer is connected to an upper port of the air outlet pipeline; a plane where the air pipeline is located is perpendicular to a plane where the clamping mechanism is located, and the grinding mechanism is provided below the air pipeline; the grinding mechanism is driven by high-pressure air in the air pipeline to operate, so that a hidden danger of electric leakage caused by using an electric apparatus in a fragile oral environment is avoided; and a steel wire is fixed by the clamping mechanism, so that the grinding safety is ensured.

Abstract: A patterned epitaxial structure laser lift-off device, including a substrate, reshaping structures, a transmittance adjustment structure, a patterned epitaxial structure, gas transmission systems, an ultraviolet source, a lift-off chamber and a light entry window. The gas transmission systems are at two sides of the lift-off chamber; the light entry window is on the lift-off chamber; the ultraviolet source is above the outside of the light entry window; the patterned epitaxial structure is inside the lift-off chamber; the substrate is on the patterned epitaxial structure. The patterned epitaxial structure includes an epitaxial structure, a sapphire substrate, patterned structures, oblique interfaces and planar interfaces, several patterned structures being uniformly designed on the epitaxial structure, each of the patterned structures being a V-shaped groove structure formed by two oblique interfaces, two adjacent patterned structures being connected by means of a planar interface.

Abstract: Quad photodiode microlens arrangements, and associated systems and methods. In one embodiment, a plurality of pixels are arranged in rows and columns of a pixel array disposed in a semiconductor material. The plurality of pixels includes green (G) pixels, red (R) pixels, blue (B) pixels and clear (C) pixels. Each pixel comprises a plurality of photodiodes that are configured to receive incoming light through an illuminated surface of the semiconductor material. A plurality of small microlenses are distributed over individual photodiodes of clear (C) pixels. A plurality of large microlenses are distributed over individual green (G) pixels. A diameter of the small microlenses is smaller than a diameter of the large microlenses.

Abstract: The present disclosure provides a radiator, an antenna, and a base station. The radiator comprises a conductor adapted to be arranged in an antenna for transmitting and/or receiving electromagnetic waves; and a pair of slots formed in the conductor and intersecting at a predetermined angle, each of the pair of slots comprising an elongated section at the middle thereof and widened sections at both ends thereof such that the conductor is divided by the pair of slots into: a continuous outer frame portion; and an enclosed portion surrounded by and connected to the continuous outer frame portion. Thus, the bandwidth of the patch antenna can be significantly broadened while maintaining the advantages of light weight, easy layout, wide range of applications, small size, low cost, etc.

Abstract: CMOS image sensor with LED flickering reduction and low color cross-talk are disclosed. In one embodiment, an image sensor includes a plurality of pixels arranged in rows and columns of a pixel array that is disposed in a semiconductor substrate. Each pixel includes a plurality of large subpixels (LPDs) and at least one small subpixel (SPD). A plurality of color filters are disposed over individual subpixels. Each individual SPD is laterally adjacent to at least one other SPD.

Abstract: A server may be provided to obtain a load balancing artificial intelligence (AI) model for a plurality of base stations in a communication system. The server may obtain teacher models based on traffic data sets collected from the base stations, respectively; perform a policy rehearsal process including obtaining student models based on knowledge distillation from the teacher models, obtaining an ensemble student model by ensembling the student models, and obtaining a policy model by interacting with the ensemble student mode; provide the policy model to each of the base stations for a policy evaluation of the policy model; and based on a training continue signal being received from at least one of the base stations as a result of the policy evaluation, update the ensemble student model and the policy model by performing the policy rehearsal process on the student models.

Abstract: A three-dimensional force loading device for a motor spindle is provided, and relates to the field of motor spindle testing. The device including a bottom plate; a torque loading assembly configured for testing torque performance of the motor spindle, and the torque loading assembly is in transmission connection with the motor spindle; a sleeve shell rotatably sleeved on the motor spindle, the sleeve shell is fixed along an axis direction of the motor spindle; a radial force loading assembly configured for testing radial force performance of the motor spindle, and the radial force loading assembly is fixedly connected with the sleeve shell; an axial force loading assembly configured for testing axial force performance of the motor spindle; and a intermediate force transmission mechanism connected with the sleeve shell and the axial force loading assembly.

Abstract: A server may be provided to obtain a load balancing artificial intelligence (AI) model for a plurality of base stations in a communication system. The server may obtain teacher models based on traffic data sets collected from the base stations, respectively; perform a policy rehearsal process including obtaining student models based on knowledge distillation from the teacher models, obtaining an ensemble student model by ensembling the student models, and obtaining a policy model by interacting with the ensemble student mode; provide the policy model to each of the base stations for a policy evaluation of the policy model; and based on a training continue signal being received from at least one of the base stations as a result of the policy evaluation, update the ensemble student model and the policy model by performing the policy rehearsal process on the student models.

Abstract: A 5G-based Internet of Things device access method and system, and storage medium. Method includes steps that IoT access platform generates authentication identification of to-be-accessed IoT device according to device identification of to-be-accessed IoT device, and carries out identity authentication of to-be-accessed IoT device through authentication identification, and identity authentication result is sent to to-be-accessed IoT device so when identity authentication result received by to-be-accessed IoT device is that identity authentication is passed, to-be-accessed IoT device accesses IoT access platform and performs encrypted data communication. Method is advantaged in that legal identity of to-be-accessed IoT equipment is verified by taking equipment fingerprint as authentication identifier, and data integrity of to-be-accessed IoT equipment is ensured through access authentication, so illegal terminal is prevented from accessing IoT access platform, and security of data transmission is improved.

Abstract: An image sensor has a plurality of pixels arranged in a row direction and in a column direction. Each pixel comprises a color filter that has a portion with a low transmissivity and a portion with a high transmissivity, and a photoelectric conversion element that includes a first photoelectric conversion cell which receives light transmitting through the portion with the low transmissivity of the color filter, and a second photoelectric conversion cell which receives light transmitting through the portion with the high transmissivity of the color filter. The plurality of pixels are arranged such that positions of the portions with the low transmissivity for pixels of one color are identical among the plurality of pixels, and the portions with the low transmissivity are positioned adjacent to each other between adjacent pixels of different colors in the row direction only.

Abstract: A resource scheduling method, a resource scheduling system, a device, and a computer-readable storage medium are disclosed. The resource scheduling method may include: obtaining a scheduling object from a scheduling queue (S100); and when the scheduling object is a customized resource, splitting the customized resource according to the current resource state to obtain a scheduling unit list (S200), the scheduling unit list including first scheduling units configured to form the customized resource; and sequentially scheduling the first scheduling units in the scheduling unit list (S300).

Abstract: The application discloses a bus bar, a battery cell acquisition assembly and a battery module. The bus bar is arranged to electrically connect a plurality of battery cells to form a battery cell group, and comprises a plurality of bus bar main bodies and at least one substrate. Each bus main body includes a positive conductive part and a negative conductive part, the connection part is electrically connected with the positive electrode of one battery cell, the negative connection part is electrically connected with the negative electrode of another battery cell, the positive conductive part and the negative conductive part are electrically connected through the connection part, and the surface of the connection part is provided with an insulating layer. Two adjacent bus bar main bodies are electrically connected through a substrate, and the surface of each substrate is provided with an insulating layer.