Abstract: An impedance matching method for a low-profile ultra-wideband array antenna is provided. The method includes: connecting an arm of a balanced end of a hyperbolic microstrip balun in series with an open circuit line; directly coupling the open circuit line to a radiator layer; connecting another arm of the balanced end of the hyperbolic microstrip balun to the radiator layer via a metallized via hole, and welding an unbalanced end of the hyperbolic microstrip balun to a coaxial line, so that the coaxial line feeds a power to the antenna via the hyperbolic microstrip balun. In this method, the open circuit line is integrated between the hyperbolic microstrip balun and the radiator layer of the antenna to achieve an impedance matching of the ultra-wideband antenna and to simplify a structure of a matching circuit.

Abstract: The present disclosure provides a multi-band base station antenna for scattering suppression, including a high-band dual-polarized antenna and a low-band dual-polarized antenna. The operating band of the high-band dual-polarized antenna is 1.7-3.0 GHz, which are four; the operating band of the low-band dual-polarized antenna operates is 0.69-0.96 GHz, and is comprised of two intersected dipoles; above the high-band dual-polarized antennas, a spacing between the high-band dual-polarized antenna and the low-band dual-polarized antenna is smaller than the quarter wavelength corresponding to the low-band dual-polarized antenna; the low-band dual-polarized antenna is provided with several rectangular open slots at equal spacings, with symmetrical openings on both sides of the dipole, with a width of 1-1.5 mm and a length of 4-to 6 mm; and a ratio of the sum of widths of the open slots to a length of an arm of the dipole is greater than 0.16 and less than 0.24.

Abstract: The three-stage axial flow degassing device adopts an efficient degassing technology including a vertical high speed swirling field, a horizontal rapid axial flow field and a vertical reversing scrubbing field formed by a combination of vertical tubes; the first-stage degasser performs the first-stage segmental vertical high speed swirling degassing operation, removes the gas phase carried by the gas-containing fluid, and forms a primary gas and a primary fluid; the microporous uniform mixer breaks bubbles of the primary fluid and forms a gas-liquid uniform mixed flow; the second-stage degasser performs the second-stage horizontal vane wheel swirling generating rapid axial flow degassing operation, removes the gas phase carried by the gas-liquid uniform mixed flow, and forms a secondary gas and a secondary fluid; the third-stage degasser performs the third-stage vertical reversing deep degassing operation, removes liquid phase carried by the secondary gas, and forms a tertiary gas and a tertiary fluid.

Abstract: The present disclosure provides for a flowable concentrate (FS) composition for forming a coating on an agricultural seed that includes an acrylic polymer having a glass transition temperature (Tg) of 0 to 35° C. measured according to ASTM D6604-00 (2017). In addition to the acrylic polymer, the FS composition further includes an agriculturally active compound, a water-soluble surfactant and water. The present disclosure also provides for a method of forming a coating on an agricultural seed using the FS composition and an agricultural seed coated with the FS composition of the present disclosure.

Abstract: Disclosed are a catalyst for preparing hydrocarbons from carbon dioxide by one-step hydrogenation and a method for preparing same. The catalyst includes nano-metal oxides and hierarchical zeolites, where the mass fraction of the nano-metal oxides in the catalyst is 10%-90%, and the mass fraction of the hierarchical zeolites in the catalyst is 10%-90%. The catalyst has excellent catalytic performance, good reaction stability and high selectivity for desired products, and in the hydrocarbons, C2=-C4= reach up to 80%, C5+ reach up to 80%, and aromatics reach up to 65%.

Abstract: Apparatuses and methods for pipelining memory operations with error correction coding are disclosed. A method for pipelining consecutive write mask operations is disclosed wherein a second read operation of a second write mask operation occurs during error correction code calculation of a first write mask operation. The method may further including writing data from the first write mask operation during the error correction code calculation of the second write mask operation. A method for pipelining consecutive operations is disclosed where a first read operation may be cancelled if the first operation is not a write mask operation. An apparatus including a memory having separate global read and write input-output lines is disclosed.

Abstract: A service invoking method, an apparatus, and the like are applied to a terminal device, such as a smartphone or an automated driving device. The method includes: When detecting a user input, the terminal device obtains at least one scenario feature used to describe a scenario in which the terminal device is currently located, determines, based on the user input and the at least one scenario feature, a first parameter associated with a service, and invokes the service based on the first parameter. Therefore, the foregoing method may be used to provide a service for a user based on user habits in different scenarios, to improve user experience.

Abstract: A wireless communication method and apparatus, and a radio frequency subsystem are provided. The apparatus includes a local oscillator circuit, configured to provide a local oscillator signal; a radio frequency transmitter coupled to the local oscillator circuit, configured to send a first signal on a first carrier based on the local oscillator signal provided by the local oscillator circuit; a radio frequency receiver coupled to the local oscillator circuit, configured to receive a second signal on a second carrier based on a local oscillator signal of a same frequency as the local oscillator signal provided by the local oscillator circuit; and a digital frequency converter coupled to the radio frequency transmitter and the radio frequency receiver, configured to provide a digital frequency conversion operation to compensate for a frequency difference between a center frequency of the first carrier and a center frequency of the second carrier.

Abstract: The present disclosure relates to a high-pitched loudspeaker, which widens the starting frequency of the high-pitched loudspeaker, and the high-pitched loudspeaker has a smoother intermediate frequency curve and less distortion. A high-pitched loudspeaker comprises a magnetic circuit system, a voice coil, and a diaphragm connected to the voice coil, wherein a first cavity is formed between the magnetic circuit system and the voice coil and the diaphragm, the high-pitched loudspeaker further comprises a back cover, the magnetic circuit system is arranged between the diaphragm and the back cover, and a second cavity is formed between the back cover and the magnetic circuit system, a through-hole is opened on the magnetic circuit system which communicates the first cavity and the second cavity to constitute an air gap cavity of the high-pitched loudspeaker.

Abstract: Methods are provided for modulating an abiotic stress response to drought in a plant, for example by introducing a heritable change to the plant, which alters the expression in the plant of an endogenous or exogenous protein that is a member of a particular gene family, the Kanghan genes. Similarly, plants and plants cells having such heritable changes are provided.

Abstract: A high-voltage electric pulse device for crushing pretreatment of ores includes an ore feeding bin, a pulse insulating barrel body, a supporting frame, a pulsation device, a product collector and a power supply. The pulse insulating barrel body and the pulsation device are assembled together, a pulsation insulating barrel body is connected with an actuating diaphragm, the actuating diaphragm is connected with an ore discharging outlet, a pulsation cone is arranged in the ore discharging outlet, the pulsation cone is hinged to a connecting rod, and the connecting rod is hinged to an eccentric wheel. Expanding and contracting devices are arranged on a cover plate, a copper bar of each expanding and contracting device is connected to a corresponding high-voltage ceramic capacitor through a high-voltage wire in parallel. A high-voltage negative pole is mounted on a screen cloth at the pulse insulating barrel body.

Abstract: A phase synchronization apparatus, a phase synchronization system, and a transceiver apparatus are disclosed to provide local oscillator signals with a same phase for each radio frequency transceiver chip in a multi-chip combination solution. The phase synchronization system includes a first radio frequency transceiver chip and a second radio frequency transceiver chip. The first radio frequency transceiver chip includes a first phase-locked loop and a first control circuit, and the second radio frequency transceiver chip includes a second phase-locked loop. The first phase-locked loop is configured to generate a first local oscillator signal, and the second phase-locked loop is configured to generate a second local oscillator signal.

Abstract: An artificial intelligence (AI) system is disclosed. The AI system comprises an input interface to accept input data; a memory storing a multi-dimensional neural network having a sequence of deep neural networks (DNNs) with an inner DNN and an outer DNN; a processor configured to submit the input data to the multi-dimensional neural network to produce an output of the outer DNN and an output interface to render at least a function of the output. Each DNN processes the input data sequentially by a sequence of layers along a first dimension of data propagation. The DNNs are arranged along a second dimension of data propagation from the inner DNN to the outer DNN. Further, the DNNs are connected such that an output of at least one layer of a DNN is combined with an input to at least one layer of subsequent DNN in the sequence of DNNs.

Abstract: Provided are an FGFR4 inhibitor with the structure of formula (I) and a preparation method and use thereof. The series of compounds of formula (I) have a very strong inhibitory effect on the FGFR4 kinase activity, and have a very high selectivity; and the same can be widely used to prepare drugs for treating cancers, in particular, liver cancer, stomach cancer, prostate cancer, skin cancer, ovarian cancer, lung cancer, breast cancer or colon cancer, and it is expected that the same can be developed into a new generation of FGFR4 inhibitor drugs.

Abstract: A scene aware dialog system includes an input interface to receive a sequence of video frames, contextual information, and a query and a memory configured to store neural networks trained to generate a response to the input query by analyzing one or combination of input sequence of video frames and the input contextual information. The system further includes a processor configured to detect and classify objects in each video frame of the sequence of video frames; determine relationships among the classified objects in each of the video frame; extract features representing the classified objects and the determined relationships for each of the video frame to produce a sequence of feature vectors; and submit the sequence of feature vectors, the input query and the input contextual information to the neural network to generate a response to the input query.

Abstract: Techniques facilitating attention based sequential image processing are provided. A system can comprise a memory that stores computer executable components and a processor that executes the computer executable components stored in the memory. The computer executable components can comprise an initialization component that can perform self-attention based training on a model that comprises context information associated with a sequence of images. Images of the sequence of images can be selected during the self-attention based training. The computer executable components can also comprise a localization component that can extract local information from the images selected during the self-attention based training based on the context information. In addition, the computer executable components can also comprise an integration component that can update the model based on an end-to-end integrated attention training framework comprising the context information and the local information.

Abstract: An apparatus includes a light source operable to produce light having a wavelength, an optical component disposed over the light source so as to intersect a path of light produced by the light source, and at least one electrically conductive trace on a surface of the optical component. A drive controller is operable to regulate optical output power of the light source. The at least one electrically conductive trace is coupled electrically to the drive controller, which is operable to monitor an electrical characteristic of the at least one electrically conductive trace, and to reduce the optical output power of the light source if a value of the electrical characteristic is indicative of a possible eye-safety hazard.

Abstract: The disclosure includes embodiments for asynchronous observation matching for object localization in connected vehicles. A method includes receiving a wireless message from the remote connected vehicle. The wireless message includes first observation data recorded by the remote connected vehicle and describing sensor measurements of the remote connected vehicle at a first time but not a second time. The method includes analyzing a set of vectors describing how a known object moves within a two-dimensional space to determine a two-dimensional flow of the known object in the two-dimensional space during a timespan. The method includes analyzing the two-dimensional flow of the object to infer a three-dimensional flow of the object in a three-dimensional space during the timespan. The method includes estimating second observation data recoded by the remote connected vehicle at the second time so that the impact of the latency is modified.

Abstract: A train window structure and a train with the train window structure, the train window structure comprising: a train window frame; train window glass disposed in the train window frame; and a fastener penetrating through an inner side of the train window frame and disposed on a train body to fasten the train window frame, the axis of the fastener being parallel to a plane where the train window glass is provided. The fastener penetrates through the train window frame from an inner side of the train window frame and is screwed into the train body; the fastener is internally installed, thus reducing a gap between the adjacent train window structures, so that the train body is more aesthetically pleasing and wind resistance is lower.

Abstract: A computer-implemented method is presented for inferring passenger routes in a subway system. The method includes identifying, via an imaging device, a target passenger within the subway system, employing an exiting flow extractor to determine passenger exiting waves, employing an exiting wave identifier to mark an exiting wave of the passenger exiting waves including the target passenger, employing a supporting evidence backtracer to determine an entrance gate for each of the passengers in the marked exiting wave including the target passenger, determining a route probability for each of the passengers in the marked exiting wave including the target passenger via voting or distribution estimation processing, and employing a most probable route inferer to infer a route of the target passenger based on an aggregate route probability for all the passengers in the marked exiting wave.