Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.

Abstract: The present disclosure relates to a single stranded RNA vector suitable for introducing a therapeutic agent, such as a peptide, a protein or a small RNA, into a host plant or otherwise treating a host plant. The vector does not encode for any movement protein or coat protein, but is capable of capable of systemic and phloem-limited movement and replication within the host plant. The vector may be modified to include an siRNA effective against a bacterial plant pathogen. Alternatively, the wild type vector may be introduced into the plant to inhibit or control a bacterial infection in the plant by way of non-specific siRNA created by the RNA silencing or transitive silencing mechanism of the plant. Alternatively, the vector may be modified to include an insert that increases a silencing mechanism of the plant, for example an insert that is a complement to a plant virus.

Abstract: Provided is a diffuser for de-speckling laser light. The diffuser includes a transparent diffuser substrate with de-speckling microstructures disposed on or formed into a first (i.e. front) side of the transparent diffuser substrate, and a reflective film coated onto an opposite second (i.e. back) side of the transparent diffuser substrate. An extinction layer may be coated onto the reflective film. An anti-reflection (AR) coating may be disposed on the first side of the transparent diffuser substrate. Also provided is a luminescent wheel including a disk and an optical ring that includes at least one fluorescent segment and the aforementioned diffuser. The optical ring is secured to the disk so as to rotate with the disk.

Abstract: The present invention discloses a charging device and method for open pit mine rock perforation blasting within the mining technology domain. The charging device includes a charging barrel with a detachable cover plate at the top and a bottom opening, housing a tray for explosive material. A jacking mechanism on the tray's side surface aids in positioning. A flexible interval gasbag separates the explosive and tray, with a wire passing hole at its center connected to an air pump via an inflation tube. A pressing plate and lifting mechanism in the cover plate facilitate lifting within the barrel. Additionally, a moving mechanism on the blast hole's top relocates the charging barrel. This innovation addresses challenges related to the cumbersome positioning and filling of existing powder explosives in open pit mine rock perforation blasting.

Abstract: The disclosure discloses an optical path system for detecting a vacuum degree of a vacuum switch and a method thereof. In the optical path system, a plasma excitation unit excites pulsed laser along an excitation optical path to bombard a shielding case of a vacuum switch to be detected, so as to generate laser plasma; an optical path focusing unit focuses the excitation optical path and a collection optical path to focus the pulsed laser on the shielding case of the vacuum switch to be detected; the optical path focusing unit includes a visible laser device for generating visible light and an adjustment device for adjusting the excitation optical path; an image collection unit collects a laser plasma image and a visible light spot focusing image; the image collection unit includes a gated detector for collecting the visible light spot image and the laser plasma image via the collection optical path.

Abstract: This application provides a load-bearing support plate, chain structure, and a conveyor belt structure incorporating them, the load-bearing support plate comprises a first panel, a second panel, and a transition panel for connecting the first panel with the second panel; the first panel is offset in a first direction relative to the second panel, at least one reinforcing rib provided on the first panel, the reinforcing rib extending upwards from the bottom of the first panel to the upper edge of the first panel and forming a bearing surface with the top surface of the first panel. By forming the first panel into a curved shape with the use of reinforcing ribs, the overall support capability is enhanced. Also, by extending the reinforcing ribs to the upper edge of the first panel, the upper edge of the support plate below becomes curved, offering a larger contact area in the thickness direction, thereby improving the stability of the spiral stacking motion.

Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.

Abstract: A heterojunction solar cell and a preparation method therefor. The heterojunction solar cell comprises: a semiconductor substrate layer; and a back composite transparent conductive film located on one side of the semiconductor substrate layer. The back surface composite transparent conductive film comprises: a first back surface transparent conductive film; and a second back transparent conductive film located on the side surface of the first back transparent conductive film facing away from the semiconductor substrate layer. Both the first back transparent conductive film and the second back transparent conductive film are doped with group III heavy atoms, and the concentration of the group III heavy atoms in the second back transparent conductive film is less than that of the group III heavy atoms in the first back transparent conductive film.

Abstract: A method, an apparatus and a device for identifying battery parameters, and a storage medium are provided.

Abstract: Disclosed are an electromagnetic induction type magnetic energy collector based on capacitive energy storage and a power improvement method. A main energy acquisition coil is sleeved in a main circuit to collect magnetic field energy, and a detection coil is sleeved in the main circuit to generate a sinusoidal signal for detecting zero crossing of a primary current; a switch group S2 and a switch group S1 are alternately turned on and off, a first rectifier bridge is connected to the switch group S2 and the switch group S1, and a comparator circuit is connected to the detection coil to compare the sinusoidal signal and convert the sinusoidal signal into a zero-crossing square wave signal; and a control module is connected to the comparator circuit, determines the zero crossing of the primary current based on the zero-crossing square wave signal.

Abstract: Provided are a method and an apparatus for identifying a parameter of a battery model, an electronic device, and a storage medium. The method includes: obtaining to-be-identified parameters from an electrochemical model to form individuals; calculating a first fitness for each individual; determining a cell parameter if any individual has a first fitness less than a fitness threshold; sorting the individuals in an ascending order based on magnitudes of the first fitness, and partition the individuals into two parts in a case that each individual has a first fitness greater than or equal to the fitness threshold; updating to sub-individuals obtained from partition; calculating a second fitness for each individual, compare the second fitness with the first fitness, and retain an individual having a smaller fitness; and terminates if a fitness of the retained individual is less than the fitness threshold.

Abstract: An apparatus for supplying power is disclosed. The apparatus may comprise a power supply circuit and a processing unit, wherein the power supply circuit may be connected with an electric energy input end of the processing unit, and the power supply circuit may provide a first power supply for the processing unit; and a forward voltage output end of the processing unit may provide a forward power supply, and a backward voltage output end of the processing end may provide a negative power supply, wherein the processing unit may include a resonant circuit, a first switching frequency of the processing unit may include a resonant frequency of the resonant circuit, and the resonant frequency may be outside an effective frequency range of a load of the apparatus for supplying power.

Abstract: A dendritic polymer contains a dendritic polyester as a core, and a plurality of arms obtained by means of polymerization of an alkenyl monomer. The root-mean square radius of gyration of the dendritic polymer does not exceed 100 nm. The alkenyl monomer contains a non-ionic monomer and an anionic monomer. The polymeric segments formed by a monomer generally used for synthesizing a filtrate loss reducer are used as the arms of the dendritic polymer, which is obtained by means of free radical polymerization. Compared with a linear polymer having an identical molecular weight, the dendritic polymer has a smaller root-mean-square radius of gyration and is more compact in structure. suitable for use in a drilling fluid.

Abstract: Provided are a powder coating material for household appliance coiled material and a preparation method thereof. The powder coating material comprises: a polyester resin, a curing agent, a silicate, a filler, a pigment, and an auxiliary agent. The powder coating material for the household appliance coiled material not only can meet the requirements of coating processes of the coiled material, but also has excellent performances such as flexibility, T-bend performance, impact resistance and solvent resistance, while satisfying the requirement for the thick coatings of the household appliance coiled material.

Abstract: In one implementation, a method is performed for generating metadata estimations based on metadata subdivisions. The method includes: obtaining an input image; obtaining metadata associated with the input image; subdividing the metadata into a plurality of metadata subdivisions; determining a viewport relative to the input image based on at least one of head pose information and eye tracking information; generating one or more metadata estimations by performing an estimation algorithm on at least a portion of the plurality of metadata subdivisions based on the viewport; and generating an output image by performing an image processing algorithm on the input image based on the one or more metadata estimations.

Abstract: In one implementation, a method of generating a bit stream encoding a video stream is performed by a device including one or more processors and non-transitory memory. The method includes decomposing a video stream into a plurality of frequency band video streams. The method includes determining a target bitrate and determining, for each frequency band video stream, a respective frequency band bit rate based on the target bit rate. The method includes encoding each of the plurality of frequency band video streams at its respective frequency band bit rate and transmitting, over a channel, each encoded frequency band video stream.

Abstract: The present disclosure provides a precursor solution of a semiconductor electrothermal film, which comprises component A, component B, and component C. The component A comprises the following components by weight: 2-10 parts of tin tetrachloride pentahydrate, 3-6 parts of stannous chloride and 0.3-1 part of glycerol, also comprises a pH regulator, the pH of the component A is 4.7-6.2; the component B comprises the following components by weight: 5-10 parts of conductivity regulator, the conductivity regulator is selected from a group consisting of antimony trichloride dihydrate, bismuth trioxide, aluminum oxide and thallium dioxide, 0.6-1 part chlorinated aluminum and a mixture thereof, also comprises a pH regulator, the pH of the component B is 4.7-5.0; the component C comprises the following components by weight: 0.5-0.7 parts of tin oxide, 0.8-1.5 parts of bismuth oxide and 15-25 parts of ethanol; also comprises 15-30 parts of distilled water.

Abstract: Disclosed in the present disclosure is an intelligent cut tobacco drying control system and method based on volatile moisture content, wherein the system comprises a heat and mass transfer process analysis module, a material and energy accounting module, a prediction model module, a model control module and an abnormality early warning module. The present disclosure analyzes a drying process of the thin sheet shredded tobacco leaf drying machine, can provide theoretical support for building the intelligent control system under changeable conditions and realize intelligent production of drying shredded tobacco leaves. The present disclosure aims to transform the existing control mode and accurately predict the drainage opening by using a fitting model between the volatile moisture content and the drainage opening, so as to realize transformation from artificial control to intelligent control.

Abstract: In communication applications, aggregate source image data at a transmitter exceeds the data that is needed to display a rendering of a viewport at a receiver. Improved streaming techniques that include estimating a location of a viewport at a future time. According to such techniques, the viewport may represent a portion of an image from a multi-directional video to be displayed at the future time, and tile(s) of the image may be identified in which the viewport is estimated to be located. In these techniques, the image data of tile(s) in which the viewport is estimated to be located may be requested at a first service tier, and the other tile in which the viewport is not estimated to be located may be requested at a second service tier, lower than the first service tier.

Abstract: An anti-loosening bolt and nut assembly structure includes a bolt having a bolt head and a bolt shank, two elastic washers, and a nut. The two elastic washers are sleeved on the bolt shank. The two elastic washers are matched with the bolt head and the nut, respectively. Each elastic washer includes an annular body having an opening. A bottom of the annular body is provided with anti-slip teeth. A top of the annular body extends upward to form an anti-loosening ring. An outer inclined surface is formed on an outer side of the anti-loosening ring. The anti-loosening ring is provided with a plurality of first unidirectional teeth. The bolt head and the nut each includes a unidirectional anti-loosening device matched with the first unidirectional teeth.