Abstract: The present invention discloses a method for detecting a salient region of a stereoscopic image, comprising: step 1) calculating flow information of each pixel separately with respect to a left-eye view and a right-eye view of the stereoscopic image; step 2) matching the flow information, to obtain a parallax map; step 3) selecting one of the left-eye view and the right-eye view, dividing it into T non-overlapping square image blocks; step 4) calculating a parallax effect value for each of the image blocks of the parallax map; step 5) for each of the image blocks of the selected one of the left-eye view and the right-eye view, calculating a central bias feature value and a spatial dissimilarity value, and multiplying the three values, to obtain a saliency value of the image block; and step 6) obtaining a saliency gray scale map of the stereoscopic image from saliency values of the image blocks.

Abstract: Implementations herein relate to a bistable piezoelectric cantilever vibration energy generator based on spherical composite structure with partial separation of different layers that includes a beam bracket and a shell. The shell is spherical, the bottom of the shell has a circular opening. The beam bracket and the shell are fixed to the base respectively. Vibration of the beam bracket can cause deformation of the piezoelectric cantilever beam, the piezoelectric cantilever beam generates electrical energy using the piezoelectric effect during deformation. The bistable piezoelectric cantilever vibration energy generator further includes twenty-five piezoelectric oscillator structures, and the lengths of the cantilever beam in the same layer are different such as to form a wide resonance frequency domain and to substantially increase power generation.

Abstract: A piston-type variable-speed control device is described. The piston-type variable-speed control device comprises piston-type speed bump structure apparatuses which are installed on a traffic lane of road, vehicle speed detection device, a speed controller, a display screen and an electrical power supply, wherein the piston-type speed bump structure apparatuses and the vehicle speed detection device are respectively connected with the speed controller, and the speed controller is further connected with the display screen and the electrical power supply. When the speed of a passing vehicle exceeds the speed limit, the piston-type speed bump structure apparatuses stay at moderately raised position to cause obvious and safe jolting motion to the vehicle. With the striking raised visual design and jolting motion on a driver, the present speed control device controls vehicle speed by means of control of the driver's behaviors.

Abstract: The present invention relates to a method for detecting visual saliencies of a video image based on spatial and temporal features, including: dividing an input image into image blocks and vectorizing the image blocks; decreasing dimensions of each image block through principal component analysis; calculating a dissimilarity between each image block and each of the other image blocks; calculating a visual saliency of each image block by combining a distance between image blocks, to obtain a spatial feature saliency map; imposing a central bias on the spatial feature saliency map; calculating a motion vector of each image block, extracting a temporal visual saliency of the current image by combining motion vectors of previous two frames, to obtain a temporal feature saliency map; integrating the spatial feature saliency map and the temporal feature saliency map to obtain a spatiotemporal feature saliency map, and smoothing the spatiotemporal feature saliency map to obtain a resulted image finally reflecting a s

Abstract: Gas metal arc welding (GMAW) is a widely used process for joining metals. Its main advantage over its competition gas tungsten arc welding (GTAW) is its high productivity in depositing metals. However, to melt metal from the wire to deposit into the work-piece, additional heat is consumed and applied to the work-piece with an uncontrolled fixed proportion to the effective heat that melts the wire. Such additional heat is often in excess of the needed heat input for the work-piece. The side-effects include a waste of the energy, an increased distortion, and possible materials property degradation. This invention is to device a method to transfer this part of heat to melt the wire by adding two wires, which form a pair of arc spots, under a tungsten arc. It also devices a method to assure the arc between the two wires be maintained stable such that the transfer be successfully continuous.

Abstract: The disclosure provides a method for growing GZO (ZnO:Ga) single crystals and relates to the technical field of crystal growth. The method may include the following steps: firstly, preparing compact, uniform and single-phase polycrystalline rods; secondly, optimizing the components and the proportions of flux; finally, optimizing the process parameters of travelling solvent floating zone crystal growth method for GZO, such as growth power, growth rate and rotation speed, etc. GZO crystals grown by this disclosure are high in crystalline quality, consistent in growth direction and excellent in electrical properties.

Abstract: This invention relates to a method for preparing a polycarboxylate superplasticizer by graft copolymerization of fatty acid vinyl ester onto acrylate polymer. In this invention, a type of polycarboxylate superplasticizer by graft copolymerization of fatty acid vinyl ester onto acrylate polymer was synthesized by the processes of polymerization-grafting-alcoholysis-hydrolysis with acrylate and fatty acid vinyl ester as main reactants. In the first polymerization step, the polyacrylate was synthesized by using acrylate as monomer and a certain amount of initiator and molecular weight regulator. In the second graft copolymerization step, the graft polymer with polyacrylate as main chain and poly(fatty acid vinyl ester) as side chain was synthesized by graft copolymerization between polyacrylate and fatty acid vinyl ester. The final polycarboxylate superplasticizer product with polyacrylic acid as main chain and polyvinyl alcohol as side chain was obtained by subsequent alcoholysis and hydrolysis steps.

Abstract: A method for embedding and extracting a multi-scale space based watermark, comprises: constructing a pyramid structure of an original image by dividing each carrier image layer into M square carrier image blocks of the same size; constructing a multi-scale structure of a watermark image; embedding a watermark by embedding each watermark image into a corresponding carrier image block to obtain the original image containing the watermark; locating in the pyramid structure of the original image a target image from which a watermark will be extracted; extracting the watermark by obtaining an estimated watermark by means of the target image block and the reference image block; comparing watermarks by evaluating similarity between the estimated watermark and a watermark image to which the reference image block corresponds. Due to the multi-resolution block pyramid data structure in the present invention, a large scale attack is decomposed into a multi-level small scale attack.

Abstract: A damping splice sleeve may include an outer cylinder, a damping material, an inner cylinder. The outer cylinder is a hollow cylinder with partition. The partition divides the cylinder into two smaller cylinders. The two smaller cylinders have no connection with each other. Both ends of the outer cylinder are open. The inner cylinder includes two hollow cylinders with one end closed and the other end open. The damping material is installed between inner cylinder and outer cylinder. The damping splice sleeve can be used for the components' connections of precast building structures with vibration control requirements. When the load effects make the components have relative displacement, the damping material in the damping splice sleeve can have shear deformation and then dissipate energy.

Abstract: A manufacturing method for Package in Package (PiP) electronic device based on multi-row Quad Flat No-lead (QFN) package is provided wherein the lower surface of plate metallic base material are half-etched to form grooves. Insulation filling material is filled in the half-etched grooves. The upper surface of plate metallic base material is half-etched to form chip pad and multi-row of leads. Encapsulating IC chip for wire bonding, adhesive material, metal wire, chip pad and a plurality of leads to form a multi-row QFN package as an inner package. Flip-chip bonding IC chip with solder bumps on the first metal material layer of leads. Encapsulating IC chip with solder bumps, the multi-row QFN package, adhesive material, and leads to form an array of PiP electronic devices. Sawing and separating the PiP electronic device array, forming PiP electronic device unit.

Abstract: Impregnated rare earth metal-containing barium-aluminum-scandate cathodes with a rare earth oxide doped tungsten matrix and methods for the fabrication thereof are described. In one aspect, an impregnated rare earth metal-containing barium-aluminum-scandate cathode comprises: a rare earth oxide doped tungsten matrix, and an impregnated active substance. The active substance comprises scandium oxide (Sc2O3), a second rare earth oxide, and barium calcium aluminate, wherein the molar ratio of Ba:Ca:Al is about 4:1:1.

Abstract: A manufacturing method for Package in Package (PiP) electronic device based on multi-row Quad Flat No-lead (QFN) package is provided wherein the lower surface of plate metallic base material are half-etched to form grooves. Insulation filling material is filled in the half-etched grooves. The upper surface of plate metallic base material is half-etched to form chip pad and multi-row of leads. Encapsulating IC chip for wire bonding, adhesive material, metal wire, chip pad and a plurality of leads to form a multi-row QFN package as an inner package. Flip-chip bonding IC chip with solder bumps on the first metal material layer of leads. Encapsulating IC chip with solder bumps, the multi-row QFN package, adhesive material, and leads to form an array of PiP electronic devices. Sawing and separating the PiP electronic device array, forming PiP electronic device unit.

Abstract: A liquid-cooled self-excited eddy current retarder having two salient poles is provided. The liquid-cooled self-excited eddy current retarder may comprise a retarder rotor, a retarder stator, a retarder coil, a retarder generator and a control module. The retarder rotor may be a jagged turntable, and an axial cross section of the jagged turntable may be in an inverted h shape. Each of the two salient poles may be located at a respective one of two axial ends of the jagged turntable. The retarder rotor may be connectable to a transmission shaft, and an inner circle of the retarder stator may be coaxial with an outer circle of the retarder rotor. The retarder coil may be an independent coil and disposed between the two salient poles of the retarder rotor. The retarder coil may be affixed to the retarder stator.

Abstract: A method and device of torque generation based on electromagnetic effect is provided. An electromagnetic torque whose direction is opposite to the motor driving direction is generated in a magnetic field when a motor-drive armature winding is adopted based on the electro-magnetic induction principle. Meanwhile, a reverse electromagnetic torque which is reverse to the armature winding with the same magnitude, is applied on a magnet set and is transmitted to an underactuated system so as to provide required torque for the underactuated system. Advantageously, the provided torque is in direct ratio to speed, difficulty in control is significantly reduced, two-stage electromagnetic variable speed can be achieved, the design of the system is simple and reliable with a concise and clear structure, and the device may be employed in a wide variety of applications.

Abstract: A sandwich structure for enhancement of photoluminescence (PL) from luminescent films and the corresponding preparation method are disclosed. The sandwich structure comprises a support, a luminescent film grown on the support, and a close-packed dielectric microsphere monolayer deposited onto the luminescent film. The microspheres have high transmittance excitation light and emitted light, respectively. The low price of dielectric microspheres is beneficial to industrial applications. The stable chemical properties of dielectric microspheres make PL enhanced in a long term. Both metal and non-metal materials can be used as the support in the sandwich structure. These features significantly improve the technique of PL enhancement for luminescent films.

Abstract: A self-excited eddy current liquid-cooled retarder is disclosed. The retarder pertains to an auxiliary braking device retarding a vehicle, and comprises a retarder rotor, a retarder stator, a control module and a generator unit. The retarder rotor comprises a retarder coil, an electromagnet core and a core cage. The retarder coil is wound on a coil frame. The electromagnet core is inserted into the coil frame. The electromagnet core, the retarder coil and the coil frame are evenly distributed on the circumference of the core cage. The retarder rotor is connected to a transmission shaft of an automobile. The inner circle of the retarder stator and the outer circle of the electromagnet core of the retarder rotor are coaxial. The generator unit comprises a generator exciting winding, a generator exciting magnetic pole, a generator armature winding and a generator armature core and is received in the retarder rotor.

Abstract: Methods for making high quality polyimide fibers suitable for continuous industrial production are described. Polyimide fibers are continuously prepared from a polyamic acid solution through sequentially spinning the polyamic acid solution by either a wet or a dry-wet process, coagulating, drying or drying after washing, thermally treating and stretching the resulting polyamic acid fibers to obtain polyimide fibers, and winding polyimide fibers as prepared into rolls.

Abstract: The present invention provides a combined AIDS vaccine for preventing and/or treating AIDS, which consists of four or more different vector-based AIDS vaccines, wherein HIV protein gene comprised in the different AIDS vaccines may be same.

Abstract: A manufacturing method for Flip Chip on Chip (FCoC) package based on multi-row Quad Flat No-lead (QFN) package is provided wherein the lower surface of plate metallic base material are half-etched to form grooves. Insulation filling material is filled in the half-etched grooves. The upper surface of plate metallic base material is half-etched to form chip pad and multi-row of leads. Encapsulating first IC chip, second IC chip, solder bumps, underfill material, and metal wire to form an array of FCoC package based on the type of multi-row QFN package. Sawing and separating the FCoC package array, and forming FCoC package unit.

Abstract: The present disclosure provides polyimide fibers with kidney-shaped cross-section and their preparation methods thereof, falling within the technical field of polyimide fiber. Polyimide fibers with kidney-shaped cross-sections are prepared by a continuous, integrated approach, starting from a polyamic acid solution prepared by reacting an aromatic dianhydride with an aromatic diamine. PAA nascent fibers with kidney-shaped cross-sections are obtained by adopting a spinneret having circular orifices under wet spinning process. The kidney-shaped cross-sections are obtained by varying the processing condition, including spinning speed, coagulation bath composition, coagulation temperature, and depth of coagulation bath. After washing and drying, polyamic acid nascent fibers are converted to polyimide fibers with kidney-shaped cross-sections under thermal curing. The integrated preparation methods are suitable for mass industrial production.