Abstract: The present application relates to the field of communications, and in particular to a hybrid beam forming architecture-based calibration compensation method and apparatus for improving the accuracy and effectiveness of calibration compensation. The method comprises: a base station determining a preset calibration weight vector matrix W and a preset first calibration signal matrix S, then transmitting N times consecutively calibration signals through analog transmission channels, calculating, according to the calibration weight vector matrix W, the first calibration signal matrix S and a first received data vector matrix YTX, a transmission channel error matrix ETX, and then performing error compensation on the analog transmission channels based on ETX.

Abstract: A low-E coating has good color stability (a low ?E* value) upon heat treatment (HT). Thermal stability may be improved by the provision of an as-deposited crystalline or substantially crystalline layer of or including zinc oxide, doped with at least one dopant (e.g., Sn), immediately under an infrared (IR) reflecting layer of or including silver; and/or by the provision of at least one dielectric layer of or including an oxide of zirconium. These have the effect of significantly improving the coating's thermal stability (i.e., lowering the ?E* value). An absorber film may be designed to adjust visible transmission and provide desirable coloration, while maintaining durability and/or thermal stability. The dielectric layer (e.g., of or including an oxide of Zr) may be sputter-deposited so as to have a monoclinic phase in order to improve thermal stability.

Abstract: A switch circuit, a mixer, and an electronic device, where the switch circuit includes a first metal oxide semiconductor (MOS) transistor, a second MOS transistor, a third MOS transistor, and a fourth MOS transistor, both a gate of the first MOS transistor and a gate of the fourth MOS transistor are connected to a first port, and both a gate of the second MOS transistor and a gate of the third MOS transistor are connected to a second port; and a lead between the gate of the first MOS transistor and the first port, a lead between the gate of the second MOS transistor and the second port, a lead between the gate of the third MOS transistor and the second port, and a lead between the gate of the fourth MOS transistor and the first port all have an equal length. In this way, linearity is relatively high.

Abstract: The present application relates to the field of communications, and in particular to a hybrid beam forming architecture-based calibration compensation method and apparatus for improving the accuracy and effectiveness of calibration compensation. The method comprises: a base station determining a preset calibration weight vector matrix W and a preset first calibration signal matrix S, then transmitting N times consecutively calibration signals through analog transmission channels, calculating, according to the calibration weight vector matrix W, the first calibration signal matrix S and a first received data vector matrix YTX, a transmission channel error matrix ETX, and then performing error compensation on the analog transmission channels based on ETX.

Abstract: The present invention provides a millimeter wave array antenna and mobile terminal. The millimeter wave array antenna includes several antenna elements arranged in an array, each antenna element includes a first radiation patch, a second radiation patch, a first grounding plate, a power divider layer and a second grounding plate sequentially stacked from top to bottom. The first radiating patch is spaced apart from and coupled to the second radiating patch. The second radiating patch is provided with two feeding ends, and each feeding end is provided with two feeding notches. The power divider layer includes two transmission lines, each includes one input port and two phase-inverted output ports electrically connected to the input port. The two phase-inverted output ports are respectively coupling-fed two feeding notches of one feeding end. Each antenna element generates orthogonal polarization and dual-band resonance under excitation of two input ports.

Abstract: This application provides a variable gain amplifier and a phased array transceiver, to enable the variable gain amplifier to keep a phase constant when switching a gain, and to enable a gain step to be stable with a frequency. The variable gain amplifier includes an amplification circuit, configured to amplify an input signal; a control circuit, configured to control a gain of the amplification circuit by adjusting an output current of the amplification circuit; and an inductive load and an inductive adjustment circuit, where the inductive load is coupled to a signal output end of the amplification circuit, the inductive adjustment circuit and the inductive load are inductively coupled, and the inductive adjustment circuit is adjustable.

Abstract: Compounds that are inhibitors of at least one of ARG1 and ARG2, and compositions containing the compounds and methods for synthesizing the compounds, are described herein. The use of such compounds and compositions for the treatment of a diverse array of diseases, disorders, and conditions, including cancer- and immune-related disorders that are mediated, at least in part, by ARG1 and ARG2 are also described herein.

Abstract: A product identification method comprises instructing an antenna in a product verification area to collect first product identification data of identified products in the case where a user enters the product verification area of a product identification passage; instructing the antenna in the product verification area to collect product verification data of identified products in the case where a user enters a product settlement area of the product identification passage; and determining user product data based on the first product identification data and the product verification data. A product verification area is provided to eliminate a tag outside the passage being falsely read and reduce a tag false reading probability.

Abstract: A preparation method of phosphotungstic acid includes mixing a mixed solution containing tungsten, phosphorus and an inorganic acid with an organic-alcohol-containing oil phase for extraction, stripping the obtained supported organic phase and distilled water according to an oil phase:aqueous phase volume ratio of 3:1 to 10:1 to obtain a stripping solution; and carrying out thermal evaporation crystallization or spray drying on the stripping solution to obtain a phosphotungstic acid crystal, wherein the organic alcohol is a C7-C20 alcohol. The inventors have found out that the addition of an inorganic acid to a solution of phosphorus or tungsten and the use of an organic alcohol as an extractant can achieve simultaneous and efficient extraction of phosphotungstic acid. It has also been found that the organic-alcohol-containing oil phase has excellent selectivity for phosphotungstic acid molecules in the mixed solution.

Abstract: The invention discloses an islanding detection method in DC microgrids based on MPPT trapezoidal voltage disturbance. The steps are as follows: start the MPPT strategy; set the starting signal threshold of disturbance; measure the output current of PVA at the maximum power; calculate the same environmental factor of PVA with different capacities under the same light intensity and temperature in real time; when the environmental factor is greater than the starting signal threshold of the disturbance, periodic trapezoidal disturbance is carried out to the PVA port voltage reference; if the PCC voltage Upcc exceeds the threshold set by the passive method, it is judged as islanding; otherwise, it is judged whether the change rule of Upcc is consistent with the change rule of the calculated PCC voltage Upccp under the trapezoidal disturbance; If it is consistent, it is judged as islanding; otherwise, it is pseudo islanding.

Abstract: A multipolar connector includes a first connector and a second connector. The first connector includes inner terminals arranged in columns and an insulating component holding the inner terminals. The second connector includes inner terminals arranged in columns and an insulating component holding the inner terminals. One of the first connector and second connector further includes an outer terminal connected to the ground potential and held by the insulating component. A shielding component extends from the outer terminal along a direction in which the columns of inner terminals extend and is held by the insulating component, and the shielding component is located between adjacent columns of inner terminals when the inner terminals of the first connector and second connector are in contact and engaged with each other. Compared with the related art, the multipolar connector of the present disclosure does not need to form the shielding component by separately insert-molding.

Abstract: A printing head module, system and method for printing laser light sources. The printing head module comprises one or more printing heads used for printing a plurality of laser light sources on a substrate successively or once for all; ink used for printing comprises a luminescent dye and a host material, as well as a solvent. The system comprises a printing head module and an ink cartridge; the printing head module is used for inkjet printing the laser light sources on the substrate; the ink cartridge is used for storing ink. By means of the technical solution, industrial manufacturing of the laser light sources is achieved, and speckles caused by laser coherence are eliminated.

Abstract: Disclosed is a method for allocating QKD network resources, which includes the following steps: obtaining a network structure of a QKD network, and constructing a key topology according to distributions condition of quantum key resources in the QKD network; in response to arrival of a service requiring encryption, judging whether the encrypted service is delay sensitive; when the service is delay sensitive, distributing quantum key resources to the service according to the key topology of the QKD network; and when the service is not delay sensitive, distributing quantum key resources to the service according to the network structure of the QKD network. Moreover, the present disclosure also provides a device for allocating QKD network resources and a non-transitory computer-readable storage medium.

Abstract: A method and apparatus for direct drying of inorganic sludge with a drum drawing process, comprising the following steps: 1) drum mixed drying of slag and sludge: respectively conveying the slag and sludge into a drum (1) in proportion, completing mixing, heat exchange, dehydration, cooling and crushing of the slag and sludge under the rolling action of the drum (1) and a steel ball to achieve cooling, crushing and drying of the slag and sludge, and directly discharging the obtained mixture; 2) slag and sludge separation: separating the steel slag and dry sludge in a manner of combining screening and rotary separation; 3) tail gas treatment: treating dusts, sulfides and organic compounds in tail gas generated by the dry sludge by using wet alkali washing and activated carbon adsorption, and discharging the treated tail gas; and 4) tailing sludge treatment: generating steam and dusts in the drum treatment of the slag and sludge, allowing dusts to enter a tail gas treatment device (4) with steam, aggregating th

Abstract: The invention relates to a grounding fault protection method for a high-voltage capacitor of a direct-current filter. The method comprises the following steps of acquiring a head end voltage u and an unbalanced current iT2 of a direct-current filter, and acquiring a discrete head end voltage and unbalanced current sequence; calculating a virtual capacitance Czd; determining a protection setting value Cset according to the bridge arm capacitance of the high-voltage capacitor, and when the virtual capacitance Czd is larger than the protection setting value Cset, protecting and judging to be an internal fault; otherwise, protecting and judging to be an external fault.

Abstract: Compounds that inhibit HIF-2?, and compositions containing the compound(s) and methods for synthesizing the compounds, are described herein. Also described are the use of such compounds and compositions for the treatment of a diverse array of diseases, disorders, and conditions, including cancer- and immune-related disorders that are mediated, at least in part, by HIF-2?.

Abstract: Customer data volume of a database and estimated transaction throughput requirements for a multi-tiered transaction system are received at a server sizing computing device. The customer data volume is compared to the estimated transaction throughput requirements. Based upon the comparison of the customer data volume to the estimated transaction throughput requirements, a customer data volume edge case for which server hardware is improperly sized by transaction-based hardware sizing is detected. Using the customer data volume, a quantity of operational memory of a server sufficient to store the customer data volume generated under the detected customer data volume edge case during real-time transactional processing by the server is calculated.

Abstract: In an embodiment a piezoelectric multilayer component includes a ceramic main body comprising a ceramic material, wherein a main component of the ceramic material has the general empirical formula (KXNa1-X)NbO3, where 0?x?1, wherein the ceramic material comprises at least two additives selected from a number of compounds respectively comprising at least one metal, wherein a metal of a first additive comprises at least K, Nb, Cu, Mn or Ta, and wherein a metal of a second additive comprises K, Nb or Ta.

Abstract: The present disclosure provides an image inpainting method, an image inpainting system, and a flat panel detector. The method includes: acquiring a first image, performing connected domain analysis on the first image, and extracting the defective pixels in the first image; and classifying the defective pixels into isolated point defects, cluster defects, and bad line defects according to the size and shape of the connected domain; outputting a second image and inpainting the second image according to the type of the defective pixels. This method can not only effectively inpaint defective pixels, but also well preserve the details of the original image.