Abstract: An ion beam etching machine and a lower electrode structure thereof. The lower electrode structure comprises an electrode plate, a ring pressing mechanism, and a lifting mechanism, the ring pressing mechanism being configured to support a member to be etched, and the lifting mechanism being configured to drive the ring pressing mechanism to ascend and descend relative to the electrode plate; and same further comprises a position measurement mechanism for measuring a position to which the ring pressing mechanism descends relative to the electrode plate. The lifting mechanism is configured to stop driving the ring pressing mechanism to descend based on measurement information fed back by the position measurement mechanism. The arrangement of the lower electrode structure can avoid fragmenting of the member to be etched, and improve the product yield.

Abstract: The present disclosure relates to a method for efficiently compressing a dynamic 3D model sequence based on 4D fusion. In some embodiments, comprising: storing a 3D model of one frame of the dynamic 3D model sequence as a reference model; determining an initial correspondence between vertices of the reference model and a target model to align the reference model and the target model by optimizing an energy function of the reference model so as to obtain initialized fusion parameters, wherein the target model is a 3D model of remaining frames of the dynamic 3D model sequence; and determining the final fusion parameters for deforming the reference model into the target model by iteratively optimizing the initialized fusion parameters.

Abstract: The present invention discloses a dihydro-2H-isoindole ester compound of the general structural formula: The present invention also provides a method of preparing the dihydro-2H-isoindole ester compound and use thereof for preparation of a drug for treating multiple myeloma. The dihydro-2H-isoindole ester compound of the present invention has good permeability and, when orally administered, is absorbed and exerts a therapeutic effect in a steady and smooth manner. Due to the distinct absorption and metabolism behavior, the compound of the present invention possesses pharmacokinetic properties that can better address clinical needs, when compared to the existing drugs.

Abstract: Provided are a distributed collaborative privacy calculation method and system for carbon emission in a plurality of power grids. An electricity quantity exchange matrix between regions, and a power generation information matrix, an electricity quantity exchange matrix, and a power-generation carbon emission information matrix of each region are constructed. A corresponding electricity carbon flow information matrix is calculated based on the power generation information matrix and the electricity quantity exchange matrix of each region. An electricity carbon emission balance equation is constructed, and an electricity carbon emission factor matrix of each region is calculated, where the electricity carbon emission factor matrix is constituted by an electricity carbon emission factor of a sub-region.

Abstract: A human-machine conversation method and apparatus, a device, and a storage medium. The method comprises: acquiring a user statement of a current round; determining, from one or more candidate tables, one or more target tables that match the user statement; parsing the user statement of the current round to obtain a first query statement; according to the first query statement, querying from the one or more target tables to obtain target data; and generating a system reply of the current round according to the target data.

Abstract: A loading and unloading system for silicon wafer includes a wafer guiding apparatus, a silicon wafer flipping apparatus, and a conveying apparatus. The wafer guiding apparatus includes a loading-guiding assembly, an unloading-guiding assembly, and a lateral conveying device connecting each of the loading-guiding assembly and the unloading-guiding assembly. The loading-guiding assembly controls loading of silicon wafers, the unloading-guiding assembly controls unloading of the silicon wafers. The silicon wafer flipping apparatus includes a silicon wafer flipping mechanism, a silicon wafer lateral moving mechanism, and a silicon wafer shift mechanism configured to control movement of the silicon wafer flipping mechanism, the silicon wafer flipping mechanism configured to flip the silicon wafers. The conveying apparatus is configured to control flowing of silicon wafers between a main apparatus and the silicon wafer flipping apparatus.

Abstract: The various implementations described herein include methods, devices and systems for power modulation and optical network coupling. A device includes a plurality of optical input ports and a plurality of optical output ports. The device further includes an array of power modulation components, each power modulation component coupled between a respective input port of the plurality of input ports and a corresponding output port of the plurality of output ports. The device also includes control circuitry coupled to the array of power modulation components, the control circuitry configured to: obtain power level information for the plurality of input ports; and adjust power modulation for one or more of the array of power modulation components based on the power level information such that output power levels are substantially similar.

Abstract: A household energy storage system and a module fixing structure thereof are provided. The module fixing structure of the household energy storage system includes multiple modules and at least one first fixing member. The modules are stacked in at least one stacking direction; the first fixing member stretches across M modules in a stacking direction in which N modules are stacked, and only two ends of the first fixing member are fixed to two of the modules, respectively; N and M each is a positive integer, N is greater than or equal to 3 and M is less than or equal to N?2. In the above module fixing structure, only two modules of the stacked N modules are fixedly connected to the same first fixing member, and the M modules are not fixedly connected to the first fixing member, which reduces the number of fixed connections.

Abstract: Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.

Abstract: Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.

Abstract: Positioning method and apparatus provide two services: a first, common positioning service and a second, high-precision positioning service to an upper-layer application through permission control and an independent reporting channel design. For a common application, a positioning result can be reported with a first, common precision through a common reporting channel. For a high-precision application, a positioning result with a higher level of precision can be reported through a high-precision reporting channel. In this way, the channel for obtaining the positioning result by the common application is isolated from the channel for obtaining the positioning result by the high-precision application, thus improving output security of the high-precision positioning result and satisfying security requirements of different countries or regions.

Abstract: An audio watermark addition method is provided, and includes: A playback terminal obtains first audio in real time, embeds an audio watermark into the first audio, where the audio watermark is associated with the playback terminal; and plays the first audio embedded with the audio watermark.

Abstract: Techniques are provided for identifying and monitoring connections in an optical system. A plurality of optical ports is configured to receive a plurality of optical links that couple with one or more remote optical devices. At least one light source generates identification (ID) signals. At least one optical element configured to direct the ID signals into transmission paths from the source optical device to the remote optical device/s over the plurality of optical links. The remote optical device/s include one or more optical elements that direct the ID signals through a set of WDM filters and returns the ID signals. At least one optical element directs returned ID signals to an optical channel monitor. At least one microprocessor configured to execute control instructions to generate the ID signals and process one or more outputs of the optical channel monitor in response to the returned ID signals to identify the plurality of optical links.

Abstract: A screw-driven control system includes a driving mechanism fixed in a cross beam, a guide locking piece and a limiting mechanism. The driving mechanism includes a screw rod and a motor driven nut assembly having a transmission frame, a nut sleeved in the screw rod, and a follow-up member fixed in the nut; the nut is mounted in the transmission frame, and the transmission frame is connected with a controlled object; the screw rod drives the nut assembly to reciprocate axially along the screw rod.

Abstract: An intelligent transfer vehicle for shared bicycles includes: a cockpit, a vehicle body platform, shared bicycle parking racks, a wheeled device, a power source unit, and a vehicle-mounted unit. The intelligent transfer vehicle combines the function of a parking platform and a transfer platform into one, and can have three transfer modes to reduce reliance on a dispatch center, save costs and improve transfer efficiency.

Abstract: An inward-swing door driving device, including a motor, a worm wheel and worm reducer driven by the motor, a positive clutch, an unlocking cylinder and an unlocking connecting mechanism. The positive clutch includes an inner tooth, an outer tooth and an elastic element. The inner tooth is in transmission connection with the worm wheel and worm reducer, and the outer tooth is in coaxial transmission with a door shaft of an inward-swing door. The unlocking cylinder includes a cylinder push rod. One end of the unlocking connecting mechanism is in contact with the end portion of the cylinder push rod, and the other end of the unlocking connecting mechanism is connected with the inner tooth.

Abstract: A door controller with an integrated data collection and transmission device, which comprises a motor driving module, a bus communication module, a vehicle door opening/closing control module, a parameter control module, and a data collection and transmission device. The data collection and transmission device is configured to receive and process four types of data collected by a motor driving data collection unit, a vehicle door opening/closing control data collection unit, an operation parameter collection unit, and a bus communication data collection unit, and transmit the four types of processed data to a background server.

Abstract: Electrically-operated inward-swing double doors and inward-swing door driving devices thereof. Each inward-swing door driving device includes a sector gear in coaxial transmission with a door shaft of the inward-swing door, a driving mechanism used for driving the sector gear to rotate, and an unlocking mechanism. The driving mechanism includes a motor gear and a motor driving the motor gear to rotate. The unlocking mechanism includes a cylinder, a cylinder push rod extending out of the cylinder, and a lock located at the end portion of the cylinder push rod. The tail end of the lock is in transmission connection with a wheel axle of the motor gear. The lock is provided with a lock rotating shaft for rotating horizontally around the lock. The lock rotating shaft is provided with an elastic element for applying twisting resilience force to the lock.

Abstract: A double sliding-plug door system includes a fixed frame, a sliding-plug rail arranged in the fixed frame, a cross beam, a driving mechanism, a linkage mechanism, a guide locking piece and a limiting mechanism. The driving mechanism has a screw rod and a motor driven nut assembly having a transmission frame, a nut sleeved in the screw rod and a follow-up member fixed in the nut; the nut mounted in the transmission frame, which itself is connected with an active sleeve assembly; the screw rod drives the nut assembly to reciprocate axially along the screw rod.

Abstract: A positioning server may acquire at least one candidate AP set from an initial AP set, wherein each of the at least one candidate AP set includes a preset number of APs enclosing a terminal which is to be positioned. The positioning server may select a target AP set from the at least one candidate AP set, wherein a distance from each of the APs included in the target AP set to the terminal is less than a preset threshold. The positioning server may determine the preset number of APs included in the target AP set as positioning APs for positioning the terminal.