Abstract: Disclosed is a liftable basketball stand, including a base, a backboard and a basket and further including a liftable support frame. A bottom of the liftable support frame is fixedly connected to the base, a top of the liftable support frame is fixedly connected to the backboard, and the basket is fixed to the backboard. The liftable support frame at least includes a first main support rod, a second main support rod and a connecting piece, wherein the first main support rod is sleeved inside the second main support rod, is movably connected to the second main support rod through the connecting piece and is capable of moving upwards or downwards relative to the second main support rod. The basketball stand disclosed by the present invention can be adjusted arbitrarily at different heights, so that the basketball stand features simple adjustment mode and high stability.

Abstract: A vacuum switching valve and a suction system having the same. The vacuum switching valve comprises: a valve body, comprising a first end and a second end, the second end being provided with an air inlet, an air outlet and a through hole; a valve element movably arranged in the valve body; a cylinder, the cylinder being connected to the first end and the valve element, the cylinder drives the valve element to move in the valve body, to close or open the air inlet; a stopper passing through the through hole, the stopper comprising a third end and a fourth end, the third end being connected to the valve element, the fourth end being located on the side of the through hole away from the valve element.

Abstract: The present disclosure provides a semi-aromatic copolyamide, its preparation method, compositions, and a molded product thereof. The semi-aromatic copolyamide is formed from raw materials including diacid monomers and diamine monomers. The diacid monomers include aromatic diacid or derivatives of the aromatic diacid and aliphatic diacid. The diamine monomers include decamethylene diamine and pentamethylene diamine. The molar ratio of the decamethylene diamine to the pentamethylene diamine is in a range of 1:1 to 30:1.

Abstract: A power factor correction (PFC) converter comprises an inductor, a main switch, a voltage divider, a diode, and a controller. The main switch controls the inductor performing magnetization and demagnetization, wherein a voltage difference between two ends of the main switch is a switch voltage. The voltage divider divides the switch voltage and generates a division voltage. The controller performs the following operations periodically in general mode: turning on the main switch; turning off the main switch after the main switch is turned on for a period of time; obtaining the switch voltage according to the division voltage, and determining the period of time for which the main switch is turned on next time according to the switch voltage and a predetermined output voltage of the PFC converter; and obtaining an output voltage according to the switch voltage during a period of time after the main switch is turned off.

Abstract: A method and a system for positron emission tomography (PET) imaging may be provided. Scan data of an object in a first time period of a PET scan of the object may be obtained. A reference image of the object may be also obtained. The reference image may be reconstructed based on reference scan data in a second time period of the PET scan. A target image of the object in the first time period may be generated using an image reconstruction model based on the scan data in the first time period and the reference image of the object.

Abstract: An electronic device is provided. The electronic device includes a redistribution structure, an electronic unit and a first conductive pad. The first conductive pad is disposed between the redistribution structure and the electronic unit. The electronic unit is electrically connected to the redistribution structure through the first conductive pad. The first conductive pad has a first coefficient of thermal expansion and a first Young's modulus. The first coefficient of thermal expansion and the first Young's modulus conform to the following formula: 0.7×(0.0069E2?1.1498E+59.661)?CTE?1.3×(0.0069E2?1.1498E+59.661), wherein CTE is the first coefficient of thermal expansion, and E is the first Young's modulus in the formula.

Abstract: Disclosed is a system and method for communication using an efficient fiber-to-chip grating coupler with a high coupling efficiency.

Abstract: The present disclosure discloses a data readout circuit of a RRAM and a RRAM circuit. The data readout circuit of the RRAM comprises: an adaptive current sense amplifier (CSA) and a reference current generator, the adaptive CSA is configured to electrically connect to the RRAM, and the adaptive CSA is electrically connected to the reference current generator; the reference current generator is configured to generate a basic reference current; the adaptive CSA is configured to obtain a reference current according to the basic reference current and a bit-line current of the RRAM; and the adaptive CSA is configured to compare the size of the reference current and that of the bit-line current so as to read out stored data. The present disclosure can improve the problem of data readout error due to the degradation of high resistance state of the RRAM.

Abstract: Provided in the present disclosure are a cobalt-free high-nickel positive electrode material, a preparation method therefor and use thereof. The cobalt-free high-nickel positive electrode material comprises a cobalt-free high-nickel matrix material and a coating layer coated on the cobalt-free high-nickel matrix material, wherein a chemical formula of the cobalt-free high-nickel matrix material is LimNixMnyO2, where 0.2?m?0.8, 0.4?x?0.95, and 0.05?y?0.6; and the coating layer is TiBzO1-z, where 0.2?z?0.8. The cobalt-free high-nickel positive electrode material obtained by means of modification using the coating layer TiBzO1-z has good acid resistance and wear resistance, high mechanical strength and excellent conductivity; and when the cobalt-free high-nickel positive electrode material is used for a lithium ion battery, the high-temperature cycling performance, capacity and initial efficiency of the lithium ion battery are greatly improved.

Abstract: A method for forming a package structure is provided. The method includes disposing a semiconductor die over a carrier substrate, wherein a removable film is formed over the semiconductor die, disposing a first stacked die package structure over the carrier substrate, wherein a top surface of the removable film is higher than a top surface of the first stacked die package structure, and removing the removable film to expose a top surface of the semiconductor die, wherein a top surface of the semiconductor die is lower than the top surface of the first stacked die package structure.

Abstract: A system for detecting and cleaning indoor air pollution adapted to be utilized in an indoor space with an HVAC system includes one or more outdoor gas detection devices, a plurality of channels, a plurality of indoor gas detection devices, a plurality of physical-typed or chemical-typed filtering devices, and a control central processor. The blower of the filtering device receives a control command so as to be driven and to generate an air convection which is directed. Therefore, the air pollution is filtered by the filtering component to allow the indoor air pollution data to approach to almost zero, so that a gas in the indoor space is cleaned to a safe and breathable state.

Abstract: A packaging module includes a circuit board, a chip, a radiation fin, and a light conducting member. The chip, the radiation fin, and the light conducting member are arranged on a same surface of the circuit board, the light conducting member and the circuit board enclosing a chamber containing the chip. The radiation fin surrounds the chip and is in contact with the light conducting. The circuit board includes a first through hole extending in a thickness direction of the circuit board and corresponding to the chip. In the packaging module, heat is transferred to the outside along two different directions, via the first through hole and via the radiation fin, improving heat dissipation efficiency.

Abstract: An indoor gas exchange system configured between an outdoor space and an indoor space includes one or more outdoor air pollution detectors, a plurality of indoor air pollution detectors, a gas exchange device, a filtering component, and a central processing controller. The gas exchange device is manufactured by a plurality of gas-guiding units integrated as a thin member through semiconductor manufacturing processes. The gas exchange device is configured between the outdoor space and the indoor space to provide gas exchange for the indoor gas. The central processing controller performs an intelligent computation to control the gas exchange device to be opened or closed and to determine whether the outdoor gas is to be introduced into the indoor space or the indoor gas is to be discharged to the outdoor space, so that the indoor gas in the indoor space is exchanged and cleaned to a safe and breathable state.

Abstract: An optical imaging lens includes first to seventh lens elements sequentially arranged along an optical axis from an object side to an image side. Each of the first to the seventh lens elements includes an object-side surface facing the object side and an image-side surface facing the image side. The first lens element has negative refracting power. The second lens element has positive refracting power. A periphery region of the object-side surface of the third lens element is convex. An optical axis region of the image-side surface of the third lens element is convex. An optical axis region of the image-side surface of the fourth lens element is convex. The sixth lens element has negative refracting power. A periphery region of the image-side surface of the seventh lens element is convex. Lens elements of the optical imaging lens are only the seven lens elements described above.

Abstract: A hidden patterned structure, applicable to an electronic vaporization device, includes: a base surface; and a plurality of patterned cells protruding from the base surface. Each patterned cell of the plurality of patterned cells includes at least two chamfered surfaces, the at least two chamfered surfaces being at different angles relative to the base surface. At least one patterned surface is formed on at least one chamfered surface of the at least two chamfered surfaces of at least a portion of the plurality of patterned cells. The at least one patterned surface has a different surface roughness and/or is at a different height from a chamfered surface corresponding to the at least one patterned surface.

Abstract: A boost converter control method includes: receiving an output voltage; receiving an output voltage target; triggering a snooze phase start of an inactive load mode based on a comparison of the output voltage relative to the output voltage target plus a first output voltage target offset; and triggering a snooze phase end of the inactive load mode based on a comparison of the output voltage relative to the output voltage target plus a second output voltage target offset, the second output voltage target offset greater than the first output voltage target offset.

Abstract: A single piece light pipe is designed to provide dual-field, multi-color, multi-directional illumination. The light pipe is combined with a single PCB having a plurality of LEDs to create a compact illuminator that can selectively provide dark field and bright field with red, green, blue color, broad spectrum, or combination of any color in horizontal, vertical, diagonal, or combination of any direction. The single piece light pipe is compact in size and light in weight. The non-closed form option not only can further reduce the weight but also can allow arrange opening area clearance for: (1) visual aiming and alignment in application, especially for hand held application; (2) reducing illumination crosstalk to unwanted directions; and for (3) mechanical integration. The improvements allow the illuminator to read direct product marking (DPM) type of barcodes.

Abstract: Automatic data generation includes extracting latent features from an input image, adding a perturbation to the latent features, applying the perturbed latent features to a pre-trained generative model, and training an image generator with images output from the generative model.

Abstract: A semiconductor device includes a first source/drain element on a first side of the semiconductor device, a second source/drain element on an opposing side of the semiconductor device, a backside contact including a first contact end on a first end of the first source/drain element and an opposing contact end in electrical communication with a backside power distribution network, a critical dimension of the first contact end is smaller than the critical dimension of the opposing contact end, and the backside contact is substantially aligned to the first source/drain element. The semiconductor device also includes and a source/drain placeholder material with a critical dimension of a middle portion of the source/drain placeholder material being larger than the critical dimension of both tend portions.

Abstract: The present disclosure provides an antenna, a method for manufacturing an antenna and a communication system. The antenna includes: a dielectric layer; a first electrode having at least one first opening therein; at least one radiating structure on a side of the dielectric layer different from that with the first electrode thereon; an orthographic projection of the radiating structure on the dielectric layer is located in that of the first opening on the dielectric layer; each radiating structure includes a second electrode and a third electrode, orthographic projections of the second and third electrodes on the dielectric layer are located in that of the first opening on the dielectric layer, the orthographic projections of the second and third electrodes on the dielectric layer are not overlapped; at least one first feed line and at least one second feed line.