Abstract: Provided are a method and a device for forwarding a data flow, an SDN controller and a storage medium. The method is applied to the SDN controller, and includes: acquiring task information of an AI training task, wherein the task information comprises a communication model of the AI training task, an address of a source task node and an address of a destination task node; selecting a forwarding path between the source task node and the destination task node based on topology information of a network and the communication model; configuring a forwarding flow table to each forwarding node on the forwarding path, causing the each forwarding node to forward a data flow of the AI training task from the source task node to the destination task node along the forwarding path based on the forwarding flow table.

Abstract: Provided is a linear driving mechanism including a driving assembly and a transmission assembly fixedly connected to each other. The driving assembly drives the transmission assembly to move. The transmission assembly includes a second housing including a hollow housing body, a gear ring formed by an end of the housing body close to the driving assembly, and a slide rail formed by recessing the housing body from an end away from the driving assembly. The gear ring is engaged with the gear assembly, and the stator assembly drives the rotor assembly to rotate the screw rod, to cause the push rod to realize the linear telescopic movement. The present application integrates the slide rail, the gear ring, and the housing to form the second housing, and the second housing is injection molded in one piece using high-strength plastic particles, which facilitates mass production and ensures more stable dimensions.

Abstract: A request to check for updated configuration files for a specific automobile and a specific automobile type is received in real-time over the data communication network. A checksum of received request is compared against stored configuration file, checks for an update. If there is an update, a signature is generated using the certificate from the unique VIN number portion and the stored configuration file for encrypting the stored configuration file. The signature and stored configuration file are transmitted to the specific automobile for local configuration update.

Abstract: A customized wearable saliva biosensor system for continuous, real-time, in-situ monitoring of biochemical markers in human saliva. The system integrates a multi-gate organic electrochemical transistor biosensor employing an organic semiconductor channel with enzyme-functionalized gate electrodes, a compact wireless integrated circuit with Bluetooth data transmission, a power subsystem optionally incorporating piezoelectric and/or triboelectric nanogenerators, and a custom-fitted wearable substrate fabricated from a three-dimensional scan of the user's dental anatomy. The system is positioned within the oral cavity in proximity to the sublingual glands for direct detection of fresh saliva at the point of secretion. A differential measurement architecture comparing an enzyme gate to a control gate provides selective, real-time detection of target biomarkers including glucose, lactate, and uric acid. Measured data is wirelessly transmitted to a companion mobile application for display to the user.

Abstract: A method of performing open and close input/output (I/O) requests targeting a directory of a client computing device includes the steps of: receiving a first I/O request to open the directory, from a driver of a host server, forwarding the first I/O request to the client computing device; in response to the first I/O request, receiving an identifier (ID) of the directory from the client computing device and transmitting the ID to the driver; in response to receiving a second I/O request to close the directory, from the driver, storing the ID in a cache, and not forwarding the second I/O request to the client computing device; and in response to receiving a third I/O request to open the directory, from the driver, retrieving the ID from the cache, and transmitting the ID to the driver again.

Abstract: Methods are disclosed for selectively doping grain boundaries in polycrystalline chalcogenide thin films for photovoltaic applications. In some embodiments, a chalcogenide-based or cadmium-based polycrystalline substrate is treated with a chloride-containing solution and contacted with an electrolyte comprising at least one dopant. An electric field is applied such that the dopant is selectively driven into grain-boundary regions while limiting dopant incorporation within grain interiors. In some embodiments, excess dopant material is removed from a surface of the substrate, followed by a thermal treatment to diffuse dopant material into grain interiors. The methods may be applied to CdTe or CdSeTe thin films and to group V dopants.

Abstract: A multijunction solar cell includes a front subcell comprising an all-inorganic perovskite absorber layer comprising a cesium cation and having a first bandgap, and a transparent electrode disposed over the perovskite absorber layer. The multijunction solar cell further includes a back subcell coupled to the front subcell, the back subcell comprising a chalcogenide absorber layer comprising a cadmium-based compound or an antimony-based compound and having a second bandgap less than the first bandgap, and a bottom electrode. In some embodiments, the perovskite comprises CsPbBrxI3-x(x=0-3) and the chalcogenide comprises CdTe and/or Sb2Se3, including tandem and triple-junction configurations.

Abstract: Compounds represented by formula (1) or stereoisomers thereof, or pharmaceutically acceptable salts, solvates or prodrugs thereof, each group in the formula being defined in the description, a pharmaceutical composition including the compounds and the use thereof in the preparation of drugs used for preventing and/or treating diseases or disorders (such as cancer) related to RAS protein activity.

Abstract: A retractable lens, including a base, a first drive assembly, a lifting assembly, a protective lens element assembly, a second drive assembly, and a lens module. The lifting assembly includes an annular rotor, a rigid ring fastened on a side of the annular rotor, a guide member whose two ends are respectively fastened to the annular rotor and the rigid ring and that extends in a first direction, a pin member that is sleeved on an outer side of the guide member and that is slidably assembled on the guide member, an elastic member connected to the pin member and the rigid ring, and a lifting member movably connected to the pin member.

Abstract: A stepping motor and an electric motor module are provided. The stepping motor including: a housing; a rotating shaft rotatably connected to the housing; a magnetic steel fixed to the rotating shaft; and a winding assembly received and fixed to an inner side surface of the housing and spaced apart from and surrounding an outer side of the magnetic steel. The winding assembly includes an annular bobbin coaxial with the housing; two claw poles spaced apart from each other along an axial direction of the rotating shaft; and a coil wound around an outer peripheral side of the bobbin. The stepping motor in the present invention can not only solve the problem of local wall thickness reduction of the frame causing difficulty in its forming, but also can be further reduced in thickness by coordinating with the corresponding design of other structures.

Abstract: The provided is a pipe clamping mechanism for oil and gas drilling and a robot using same. The pipe clamping mechanism includes a housing, a baffle, a clamping assembly, a transmission assembly, a driving assembly, and an opening and closing assembly, where the housing is provided with a pipe clamping channel; the baffle is rotatably provided on the housing; the driving assembly and the opening and closing assembly are provided on the housing; the driving assembly is connected to the opening and closing assembly through the transmission assembly; the opening and closing assembly is connected in a transmission manner to the baffle; the clamping assembly is movable forward and backward on the housing; the driving assembly is connected to the clamping assembly through the transmission assembly; the driving assembly is configured to drive, through the transmission assembly, the clamping assembly to move forward and backward.

Abstract: Methods for forming a perovskite solar cell include providing a transparent conductive oxide coated substrate, disposing an electron transport layer (ETL) over the substrate, disposing a volume of a perovskite precursor ink over the ETL, rotating the substrate and disposing a gas mixture, comprising dry air and antisolvent vapor, over the perovskite precursor ink. The method further comprises annealing the substrate to form a perovskite layer, forming a hole transport layer (HTL) over the perovskite layer and forming a substrate over the HTL. Disclosed is a perovskite solar cell including a perovskite photovoltaic layer comprising all, or substantially all, of the photo active ? phase and providing a power conversion efficiency exceeding 20%.

Abstract: A motor is provided, including an outer housing, a stator, and a rotor. The outer housing includes an accommodating space, and the stator and the rotor are accommodated in the accommodating space, the rotor is rotatable with respect to the stator. The outer housing includes a first surface, the first surface is enclosed to form the accommodating space. The rotor includes a rotating shaft and a magnet, the rotating shaft is rotatable with respect to the outer housing, and the magnet is fixed to the rotating shaft. The stator includes a coil, the coil is disposed along a periphery of the magnet and is spaced apart with the magnet, the coil is fixed to the first surface through adhesive bonding. Therefore, magnetic flux leakage is effectively minimized, so that torque performance of the motor is higher and a structure of the motor is simpler.

Abstract: A solar cell includes a transparent electrode and a hole transport layer (HTL) coupled to and disposed underneath the transparent electrode. The solar cell includes a light-absorbing layer made of a perovskite photovoltaic material that is coupled to the HTL opposite the transparent electrode. The solar cell includes an electron transport layer (ETL) made of tin oxide (SnO2) coupled to the light-absorbing layer opposite the HTL. The solar cell includes a bottom electrode made of a carbon material coupled to the ETL opposite the light-absorbing layer. The solar cell includes a substrate made of aluminum or an aluminum alloy coupled to the bottom electrode opposite the ETL.

Abstract: The present disclosure discloses a coreless motor including an outer housing, a first lid mounted on the outer housing, an inner housing with a second receiving space, received in the first receiving space, a rotor rotatably connected to the first lid and the inner housing, and a stator coil received in the second receiving space and fixed to inner housing; the outer housing includes an end portion enclosed an opening; the first lid includes a fixation portion mounted on the end portion and a first extending portion extending into the opening; the first extending portion is fixed to the inner housing.

Abstract: Provided is a linear driving mechanism including a driving assembly and a transmission assembly fixedly connected to each other. The driving assembly drives the transmission assembly to move. The transmission assembly includes a second housing including a hollow housing body, a gear ring formed by an end of the housing body close to the driving assembly, and a slide rail formed by recessing the housing body from an end away from the driving assembly. The gear ring is engaged with the gear assembly, and the stator assembly drives the rotor assembly to rotate the screw rod, to cause the push rod to realize the linear telescopic movement. The present application integrates the slide rail, the gear ring, and the housing to form the second housing, and the second housing is injection molded in one piece using high-strength plastic particles, which facilitates mass production and ensures more stable dimensions.

Abstract: Provided are a telescopic lens and an electronic device. The telescopic lens includes a base, a stator assembly, a rotor assembly, a lifting member, a protective lens assembly, and a lens assembly. The stator assembly includes an annular stator, a plurality of winding posts, and a plurality of windings. The rotor assembly includes a magnetic annular rotor and an annular connection frame, and the inner peripheral side of the annular connection frame is provided with a track groove. The lifting member is accommodated in the annular connection frame and at least partially slidably assembled in the track groove. Upon energization of the windings, the windings and the annular rotor are used for driving the lifting member to move up and down along the track groove. The telescopic lens features a small size occupation, high transmission efficiency, small backlash error, drop resistance, simple structure and manufacturing process, and high stability.

Abstract: The present application provides a brushless hollow cup motor including a housing, a stator assembly fixed in the housing, a rotor assembly supported in the housing, a first bearing, and a second bearing. The housing includes a first cover plate, a second cover plate, and a housing body sandwiched between the cover plates. The rotor assembly is supported on the first and second cover plates and forms a rotational connection. The first bearing is a ball bearing and the second bearing is an oil bearing. The first cover plate and the second cover plate are recessed to form a first groove and a second groove, respectively. The rotor assembly are fixed to the inner peripheral sides of the first and second bearings. The present application ensures that the axial and radial movements of the rotor are maintained in a reasonable range, thereby improving the motor's operational stability.

Abstract: The present application provides a brushless hollow cup motor including a housing, a stator assembly fixed to the housing, a rotor assembly rotatably connected to the housing, a front cover and a bracket mounted on two ends of the housing, a circuit board fixed to the bracket, and an outlet terminal fixed to the circuit board. The stator assembly is provided around the rotor assembly. The front cover is engaged with the housing through a first limiting structure and fixedly welded to one end of the housing, the bracket is engaged with the housing through a second limiting structure and fixed to the other end of the housing, and the rotor assembly is rotatably connected to the front cover and the bracket. The brushless hollow cup motor has a simple structure, which facilitates ensuring an accurate and uniform position of the motor outlet, saves costs, and improves productivity.