Abstract: The present application discloses a positive electrode active material and a preparation method thereof, a positive electrode plate, a battery, and an electric apparatus, where the positive electrode active material includes a sodium manganese oxide, the sodium manganese oxide includes a first phase and a second phase, the first phase includes alternating first sodium ion layers and first transition metal layers, and the second phase includes alternating second sodium ion layers and second transition metal layers. In the first phase, an interlayer spacing between adjacent first transition metal layers in a direction perpendicular to a (001) crystal plane is d1, in the second phase, an interlayer spacing between adjacent second transition metal layers in the direction perpendicular to the (001) crystal plane is d2, and d1-d2 ranges from 0.01 nm to 0.02 nm.

Abstract: Aspects of the present technology are directed toward three-dimensional (3D) stacked processing systems characterized by high memory capacity, high memory bandwidth, low power consumption and small form factor. The 3D stacked processing systems include a plurality of processor chiplets and input/output circuits directly coupled to each of the plurality of processor chiplets.

Abstract: The present disclosure sets forth an all solid-state battery that includes a positive electrode having cathode active material, binder, and catholyte material; a solid-state buffer on at least one side of the positive electrode layer; a bonding layer, and a lithium-stuffed garnet electrolyte separator.

Abstract: A positive electrode active material, a preparation method thereof, a positive electrode plate, a battery, and an electric device are provided. The positive electrode active material includes a core and a coating layer. The core includes a sodium-ion transition metal oxide containing the iron element and/or nickel element. In the sodium-ion transition metal oxide, a molar amount of the iron element is denoted as b, a molar amount of the nickel is denoted as c, 0?b?0.4, and 0?c?0.4. The coating layer is disposed on at least a portion of a surface of the core, the coating layer contains an alkaline sodium compound, and based on a total mass of the positive electrode active material, a mass proportion of the alkaline sodium compound is w %, which satisfies: 0 . 1 ? ( b + c ) / w ? 0 . 5 .

Abstract: A head-wearable device comprising a larger battery, a smaller battery, one or more electronic components, and memory including executable instructions for causing the head-wearable device to perform operations is described. The operations are performed in response to a request to perform a computational task. The operations include, in accordance with a determination that a larger battery charge is above a larger battery charge threshold and a smaller battery charge is above a smaller battery charge threshold, providing power from the larger battery and the smaller battery to the one or more electronic components. The operations further include, in accordance with a determination that the larger battery charge is above the larger battery charge threshold and the smaller battery charge is below the smaller battery charge threshold: (i) deactivating a discharging path of the smaller battery and (ii) providing power from the larger battery to the one or more electronic components.

Abstract: A method for preparing a phosphorus adsorbent, including: drying a waste gypsum to remove moisture; crushing and sieving an obtained dried gypsum to obtain a crushed gypsum; subjecting the crushed gypsum to pyrolysis in an inert gas atmosphere to obtain a pyrolysis product; and grinding and sieving the pyrolysis product to obtain the phosphorus adsorbent; wherein based on a total weight of the waste gypsum, the waste gypsum includes less than 47 wt % of SO3, more than 45 wt % of CaO, and less than 1 wt % of Al2O3. Also provided is a phosphorus adsorbent prepared by the method.

Abstract: A positive electrode active material and a preparation method thereof, a positive electrode plate, a battery, and an electric device. The positive electrode active material includes: NaxMnaFebMcNdO2+??eFe, where 0.5?x?1.1, a?0, b?0, c?0, d>0, a+b +c+d=1, ?0.1???0.1, and e?0; M ions include at least one of Ni2+, Ni3+, Cu2+, Cu+, Zn2+, Mg2+, Y3+, La3+, In3+, Sb3+, Li+, Sn2+, and Ag+; ?Bi×Ii4?1500 ??4, where Bi is a molar fraction of cations, Ii is an ionic potential of the cations, in unit of ??1, and the cations include manganese ions, iron ions, M ions, and N ions; and the ionic potential of the N ions is greater than or equal to 5 ??1.

Abstract: A positive electrode active material and a preparation method thereof, a positive electrode plate, a battery, and an electric apparatus are provided. The positive electrode active material includes: NaxMnaCubM1cM2dM3eO2+f?gRg, where M1 includes an element capable of forming a cation with a valence of +2 or less, M2 includes an element capable of forming a cation with a valence of +3, M3 includes an element capable of forming a cation with a valence of +4 or higher, R includes a Group VIIA element, 0.67?x?1.2, a+b+c+d+e=1, a>0, b>0, c?0, d?0, e?0, ?0.1?f?0.1, 0?g?0.05, and b 2 × ( b + c ) 2 × ( b + d ) a × ( a + e ) 4 ? 0 ? .04 .

Abstract: This application provides a positive electrode active material, a preparation method thereof, and a positive electrode plate, a battery, and an electric apparatus including the same. The positive electrode active material includes a layered transition metal oxide represented by Formula (I), with parameters as defined herein. The positive electrode active material includes a K element, and an amount of the K element decreases from a particle surface to a particle interior of the positive electrode active material.

Abstract: The present disclosure discloses an optical imaging lens group, along an optical axis from an object side to an image side, sequentially includes: an autofocus assembly, a first lens, a second lens, a third lens, a fourth lens, and at least one subsequent lens, where, a radius of curvature of an image-side surface of the autofocus assembly is variable.

Abstract: A layered-oxide positive electrode active material may have a molecular formula of NaxMnaFebNicMdNeO2-?Qf, where a doping element M is selected from at least one of Cu, Li, Ti, Zr, K, Sb, Nb, Mg, Ca, Mo, Zn, Cr, W, Bi, Sn, Ge, or Al, a doping element N is selected from at least one of Si, P, B, S, or Se, a doping element Q is selected from at least one of F, Cl, or N, 0.66?x?1, 0<a?0.70, 0<b?0.70, 0<c?0.23, 0?d<0.30, 0?e?0.30, 0?f?0.30, 0???0.30, a+b+c+d+e=1, 0<e+f?0.30, 0<(e+f)/a?0.30, 0.20?d+e+f?0.30, and (b+c)/a?1.5.

Abstract: A layered-oxide positive electrode active material may have a molecular formula of NaxMnaFebNicMdNeO2-?Qf, where a doping element M is selected from at least one of Cu, Li, Ti, Zr, K, Sb, Nb, Mg, Ca, Mo, Zn, Cr, W, Bi, Sn, Ge, or Al, a doping element N is selected from at least one of Si, P, B, S, or Se, a doping element Q is selected from at least one of F, Cl, or N, 0.66?x?1, 0<a?0.70, 0<b?0.70, 0<c?0.23, 0?d<0.30, 0?e?0.30, 0?f?0.30, 0???0.30, a+b+c+d+e=1, 0<e+f?0.30, 0<(e+f)/a?0.30, 0.20?d+e+f?0.30, and (b+c)/a?1.5.

Abstract: An optical imaging lens group, along an optical axis from an object side to an image side, sequentially includes: an autofocus component, a first lens, a second lens, a third lens, a fourth lens, and at least one subsequent lens. A radius of curvature of an image-side surface of the autofocus component is variable; and there is an interval between each two adjacent lenses among the first lens to the at least one subsequent lens.

Abstract: The present disclosure provides an optical imaging lens assembly, along an optical axis from an object side to an image side, sequentially includes: a first lens having positive refractive power; an autofocus component; a second lens having a refractive power; a third lens having a refractive power; a fourth lens having a refractive power; and at least one subsequent lens having a refractive power. At least one surface from an object-side surface of the first lens to an image-side surface of the at least one subsequent lens is an aspheric surface; the first lens and the autofocus component are cemented together; and a radius of curvature of an image-side surface of the autofocus component is variable.

Abstract: A layered-oxide positive electrode active material may have a molecular formula of NaxMnaFebNicMdNeO2-?Qf, where a doping element M is selected from at least one of Cu, Li, Ti, Zr, K, Sb, Nb, Mg, Ca, Mo, Zn, Cr, W, Bi, Sn, Ge, or Al, a doping element N is selected from at least one of Si, P, B, S, or Se, a doping element Q is selected from at least one of F, Cl, or N, 0.66?x?1, 0<a?0.70, 0<b?0.70, 0<c?0.23, 0?d<0.30, 0?e?0.30, 0?f?0.30, 0???0.30, a+b+c+d+e=1, 0<e+f?0.30, 0<(e+f)/a?0.30, 0.20?d+e+f?0.30, and (b+c)/a?1.5.

Abstract: A power management system for a display light emitting diode (LED) driver for an augmented reality/virtual reality (AR/VR) device mitigates (e.g., attenuates) an input peak power delivered to the LED driver from a DC source and decreases a voltage ramp rate of the LED driver while maintaining the default current ramp rate or vice versa. A liquid crystal on silicon (LCOS) digital process is used to provide a current reference with a slow ramp rate and/or to provide an offset. The offset (e.g., a delay) may be implemented between the voltage ramp and the current ramp to achieve a non-overlapping output voltage and output current.

Abstract: This application describes systems and methods for facilitating memory access for graph neural network (GNN) processing. An example method includes fetching, by an access engine circuitry implemented on a circuitry board, a portion of structure data of a graph from a pinned memory in a host memory of a host via a first peripheral component interconnect express (PCIe) connection; performing node sampling using the fetched portion of the structure data of the graph to select one or more sampled nodes; fetching, by the access engine circuitry, a portion of attribute data of the graph from the pinned memory via the first PCIe connection; sending the fetched portion of the attribute data of the graph to one or more processors; and performing, by the one or more processors, GNN processing for the graph using the fetched portion of the attribute data of the graph.

Abstract: The presented systems enable efficient and effective network communications. The presented systems enable efficient and effective network communications. In one embodiment a memory device includes a memory module, including a plurality of memory chips configured to store information; and an inter-chip network (ICN)/shared smart memory extension (SMX) memory interface controller (ICN/SMX memory interface controller) configured to interface between the memory module and an inter-chip network (ICN), wherein the ICN is configured to communicatively couple the memory device to a parallel processing unit (PPU). In one exemplary implementation, the ICN/SMX memory controller includes a plurality of package buffers, an ICN physical layer interface, a PRC/MAC interface, and a switch. The memory device and be a memory card including memory module (e.g., DDR DIMM, etc.).

Abstract: An optical imaging lens assembly is provided, along an optical axis from an object side to an image side, sequentially includes: a first lens having refractive power; an autofocus assembly; a second lens having refractive power, and an image-side surface of the second lens being a concave surface; a third lens having refractive power, and an image-side surface of the third lens being a convex surface; a fourth lens having refractive power, an object-side surface of the fourth lens being a concave surface, and an image-side surface of the fourth lens being a convex surface; and at least one subsequent lens having refractive power. A radius of curvature of an object-side surface of the autofocus assembly being variable.

Abstract: An optical imaging lens assembly sequentially includes, from an object side to an image side along an optical axis, a first lens (E1), second lens (E2), third lens (E3), fourth lens (E4), fifth lens (E5) and sixth lens (E6) with refractive power. The first lens (E1) has a positive refractive power, and an image-side surface (S2) of the first lens is a concave surface. The second lens (E2) has a negative refractive power. The fifth lens (E5) has a negative refractive power, and an object-side surface (S9) of the fifth lens is a concave surface. A distance TTL from an object-side surface (S1) of the first lens (E1) to an imaging surface (S15) of the optical imaging lens assembly and a total effective focal length f of the optical imaging lens assembly satisfy TTL/f?0.85.