Abstract: A technique for reducing recovery time in a computing apparatus includes: storing data in a key-value store residing in a persistent memory, the key-value store including a plurality of persistent nodes including key-value pairs, the key-value pairs of the persistent nodes being unsorted; caching selected persistent nodes in a volatile memory, the key-value pairs of the cached nodes being sorted, the caching including instantiating a dual pointer for each cached node, the dual pointer including a volatile pointer to a child node of the cached node and a persistent pointer to the child node of the corresponding persistent node in the key-value store; and rebuilding the cache of selected nodes upon demand using the dual pointers in the event of recovery.

Abstract: The present invention relates to a positioning device (100, 100?, 100?) for securing an intramedullary nail (19) in a long bone, said positioning device comprising a guide bow (1), with an adjusting device (3) and a sleeve guide (2), wherein the adjusting device (3) has a targeting device (5); and wherein the targeting device (5) is designed to receive a locking device (21) or an instrument (23) for acting on the locking device (21); and wherein the sleeve guide (2) has a sleeve (7), which sleeve (7) is mounted in the sleeve guide (2) such that it can be rotated and/or slid relative to the sleeve guide (2); and wherein the sleeve (7) has a longitudinal through-opening for receiving a guiding device therein.

Abstract: The application relates to the technical field of display, and discloses a display panel, a preparation method thereof and a display device. The display panel includes: a rigid base substrate; a flexible insulating layer having a first part and a second part, the first part being disposed on the base substrate, the second part exceeding a side edge of the base substrate; and an integrated circuit chip and a flexible printed circuit respectively bonded and connected with the second part of the flexible insulating layer.

Abstract: Described herein are variants of acetylserotonin O-methyltransferase (ASMT) as well as vectors and recombinant microbial host cells expressing such ASMT variant and their use in producing melatonin and related compounds. Preferred ASMT variants provide for a higher turnover of N-acetylserotonin into melatonin.

Abstract: Methods, systems, and apparatus, including computer programs encoded on computer storage media, for performing machine learning using a query engine. One of the methods includes obtaining, from a user device and by a query engine that is configured to access one or more databases, a command to execute a user-defined function, wherein the user-defined function includes an inference call to a machine learning model, wherein the command comprises one or more model inputs to the machine learning model; obtaining, by the query engine and from the one or more databases, trained parameter values for the machine learning model; executing, by the query engine, the user-defined function, comprising processing the one or more model inputs using the machine learning model according to the obtained parameter values of the machine learning model to generate respective model outputs; and providing, to the user device and by the query engine, the generated model outputs.

Abstract: Methods of depolymerizing lignin and products obtained therefrom. The methods include reacting lignin in a liquid solvent comprising an oxidation catalyst with the solvent being in contact with 02 gas. The solvent can include aprotic polar solvents. The oxidation catalyst can include heterogeneous catalysts. The methods can be used in the oxidative catalytic fractionation of raw biomass to generate soluble aromatic monomers and a solid carbohydrate residue. Depolymerized lignin products include phenolic and benzoquinone monomers, such as p-hydroxybenzoic acid, vanillin, syringaldehyde, vanillic acid, and/or syringic acid.

Abstract: The present disclosure provides an electronic paper display module, including an array substrate and an electronic paper film arranged opposite to each other. The electronic paper film includes a common electrode, the array substrate includes a display region and a peripheral region, and a common electrode lead is located at the peripheral region. An orthogonal projection of the electronic paper film onto the array substrate at least covers the display region, and the common electrode lead is provided with a hollowed-out region.

Abstract: A display panel, a preparation method thereof, and a display device, and relates to the field of display technology are provided. The display panel includes: a substrate; a plurality of illuminating pixels arranged in an array above the substrate and located in the display region; and a first water oxygen barrier bar disposed above the substrate and located in the peripheral region, wherein the first water oxygen barrier bar includes a plurality of first sub-barrier bars arranged intermittently and a plurality of second sub-barrier bars arranged intermittently; in a direction perpendicular to an arrangement direction of the first sub-barrier bars, a gap between adjacent first sub-barrier bars and a gap between adjacent second sub-barrier bars are not aligned with each other.

Abstract: An array substrate includes a gate layer, a first insulating layer, a channel layer, a source-drain layer, a second insulating layer, and a common electrode layer that are sequentially stacked, wherein the second insulating lay is provided with via holes formed therein; and the source-drain layer includes a plurality of sources, a plurality of drains, a plurality of data lines and a plurality of common electrode signal lines. The common electrode signal line includes a plurality of common electrode signal line segments, each of the common electrode signal line segments passes through at least one sub-pixel row, and each of the common electrode signal line segments is connected to the common electrode layer through the via hole.

Abstract: A downlight apparatus includes a light module, connecting arms and a driver box. The connecting arms are fixed to a back cover of the light module. The connecting arm has a guiding top and a lateral stopper for entering a receiver slit of the driver box. The lateral stopper and the guiding top may be made of one metal piece, and the lateral stopper is protruding at a lateral side of the connecting arm so that to fix the connecting arm to the driver box.

Abstract: An unmanned aerial vehicle (UAV) includes a central part, a frame assembly, and a propulsion assembly mounted to the frame assembly. The UAV also includes a servo mounted to the central part. The servo includes a driving apparatus, a control apparatus operably coupled with the driving apparatus, and a sensor configured to obtain operating parameters of the driving apparatus. The operating parameters include operating positions of the driving apparatus. The control apparatus is configured to control the driving apparatus to rotate to a predetermined position and stay at the predetermined position based on the operating positions of the driving apparatus obtained by the sensor.

Abstract: A physical token-based centralized authentication system for IoT devices is provided. The system transfers authentication of the IoT device on cloud to the IoT gateway for centralized authentication. User may respond on the IoT gateway via a U2F token to complete authentication of the IoT device. By transferring a kernel of authentication from a large number of scattered single IoT terminals to nodes of the trusted IoT gateway, the system overcomes defects such as numerous IoT devices, limited terminal resources, high authentication cost, and cumbersome operations while enhancing security of the IoT environment, thereby enhancing security of authentication for IoT environment and improving efficiencies of device authentication and management.

Abstract: The present disclosure relates to a detection circuit. The detection circuit includes a first input circuit and a second input circuit. The first input circuit has multiple first switch units, each of which being disposed in a one-to-one correspondence with one of multiple first signal lines. The second input circuit has multiple second switch units connected in a cascade arrangement, each of which being disposed in a one-to-one correspondence with one of multiple first signal lines. A second terminal of the second switch unit in a previous stage is connected to a first terminal of the second switch unit in the next adjacent stage. The first terminal of the second switch unit of a first stage is connected to a second terminal of a corresponding first signal line. The second terminal of the second switch unit of a last stage is connected to a first detection terminal.

Abstract: An apparatus injects a start clock to a crystal at the beginning to increase an overall start up speed of the crystal. The apparatus relies on an impedance change inside the crystal itself instead of searching for a synchronization on the yet small crystal oscillation. The apparatus includes an oscillator (separate from the crystal) to search for the crystal's resonance frequency by detecting the crystal's impedance change. Once the frequency of the oscillator matches the crystal's resonance, there is significant change in the crystal's impedance. Using that information, the apparatus can lock the oscillator frequency at the crystal resonance frequency and inject the clock with high efficiency.

Abstract: A shift register unit and a driving method thereof, a gate drive circuit and a display device. The shift register unit includes a first input circuit, an output circuit and a first output pull-down circuit. The first input circuit is configured to charge a pull-up node in response to a first clock signal and reset the pull-up node in response to the first clock signal; the output circuit is configured to output a second clock signal to an output terminal under a control of a level of the pull-up node; the first output pull-down circuit is configured to denoise the output in response to a third clock signal.

Abstract: A method for detecting an operational status of a battery including a plurality of cells includes obtaining static voltages and dynamic voltages of the cells and determining the operational status of the battery based on the static voltages and dynamic voltages.

Abstract: A display panel, a preparation method thereof, and a display device, and relates to the field of display technology are provided. The display panel includes: a substrate; a plurality of illuminating pixels arranged in an array above the substrate and located in the display region; and a first water oxygen barrier bar disposed above the substrate and located in the peripheral region, wherein the first water oxygen barrier bar includes a plurality of first sub-barrier bars arranged intermittently and a plurality of second sub-barrier bars arranged intermittently; in a direction perpendicular to an arrangement direction of the first sub-barrier bars, a gap between adjacent first sub-barrier bars and a gap between adjacent second sub-barrier bars are not aligned with each other.

Abstract: An apparatus injects a start clock to a crystal at the beginning to increase an overall start up speed of the crystal. The apparatus relies on an impedance change inside the crystal itself instead of searching for a synchronization on the yet small crystal oscillation. The apparatus includes an oscillator (separate from the crystal) to search for the crystal's resonance frequency by detecting the crystal's impedance change. Once the frequency of the oscillator matches the crystal's resonance, there is significant change in the crystal's impedance. Using that information, the apparatus can lock the oscillator frequency at the crystal resonance frequency and inject the clock with high efficiency.