Abstract: The present disclosure discloses a gradient single-crystal positive electrode material, which has a chemical formula of LiNixCoyA1-x-yO2@mLiaZbOc, wherein 0<x<1, 0<y<1, 0<x+y<1, 0<m<0.05, 0.3<a?10, 1?b<4, and 1?c<15, A is at least one of Mn, Zr, Sr, Ba, W, Ti, Al, Mg, Y, and Nb, and Z is at least one of B, Al, Co, W, Ti, Zr, and Si. The atomic ratio of the content of Co on the surface of the single-crystal positive electrode material particle to the content of Ni+Co+A on the surface is greater than 0.4 and less than 0.8, and the atomic ratio of Co at a depth 10% of the radius from the surface of the single crystal positive electrode material particle is not less than 0.3; and the single-crystal positive electrode material particle has a roundness of greater than 0.4, and is free from sharp corners.

Abstract: The base is provided with a first sliding position and a second sliding position along the sliding direction of the latch; when the sliding latch is in the first sliding position, it is connected to the atomization core to restrict the axial movement of the atomization core along the through-hole; and when it is in the second sliding position, it is disengaged from the atomization core to release the restriction. The detachable atomization core atomizer of the present invention is designed by the way of lower intake and lower replacement of atomization core; by sliding the latch, the atomization core is automatically ejected; when installing the atomization core, just insert it according to the direction, simple and hygienic operation without oil leakage.

Abstract: An automatic righting system includes a discrimination calibration module, a righting module, and a controller. The discrimination calibration module includes a distance sensing unit. The distance sensing unit is located at the front end of the glasses and configured to acquire the distance between the distance sensing unit and a first feature position. The righting module includes a push-up air cushion. The push-up air cushion is mounted at the front end of the glasses. The push-up air cushion is configured to be inflated to push the glasses to move upward. The controller is electrically connected to the distance sensing unit and the push-up air cushion. The controller is configured to control the push-up air cushion to start or stop to right the glasses according to a distance signal of the distance sensing unit.

Abstract: The present invention discloses a single microphone hearing aid noise reduction method. The method comprises: acquiring an original sound signal, identifying the noise characteristics of noise in the original sound signal; iteratively training the noise reduction formula obtained by noise identification, optimizing the noise reduction formula, and acquiring the optimal values of parameters in the noise reduction formula; calculating the original sound signal according to the noise reduction formula optimized by iterative training and the specific value of each parameter, and outputting the signal to noise ratio of the noise; and judging whether the signal to noise ratio is qualified, and if qualified, carrying out hearing aid processing of the processed sound signal. The present invention can quickly identify, suppress and converge unsteady noise by single microphone noise reduction without the aid of special iterative adaptive learning filter hardware built in a hearing aid chip.

Abstract: The present invention discloses a hearing aid function realization method based on a wearable device system and a wearable device. The method comprises: collecting external sound signals based on a microphone on a wearable device, and inputting the collected external sound signals into pre-installed hearing aid software; processing the external sound signals based on the hearing aid software to obtain the processed sound signals, wherein the processed sound signals meet the hearing aid needs of hearing-impaired users; and transmitting the processed sound signals to a Bluetooth headset connected with a Bluetooth module based on the Bluetooth module, so that the hearing-impaired users receive and listen to the processed sound signals based on the Bluetooth headset.

Abstract: The present invention discloses a hearing aid function realization method based on a wearable device system and a wearable device. The method comprises: collecting external sound signals based on a microphone on a wearable device, and inputting the collected external sound signals into pre-installed hearing aid software; processing the external sound signals based on the hearing aid software to obtain the processed sound signals, wherein the processed sound signals meet the hearing aid needs of hearing-impaired users; and transmitting the processed sound signals to a Bluetooth headset connected with a Bluetooth module based on the Bluetooth module, so that the hearing-impaired users receive and listen to the processed sound signals based on the Bluetooth headset.

Abstract: The present invention discloses a single microphone hearing aid noise reduction method. The method comprises: acquiring an original sound signal, identifying the noise characteristics of noise in the original sound signal; iteratively training the noise reduction formula obtained by noise identification, optimizing the noise reduction formula, and acquiring the optimal values of parameters in the noise reduction formula; calculating the original sound signal according to the noise reduction formula optimized by iterative training and the specific value of each parameter, and outputting the signal to noise ratio of the noise; and judging whether the signal to noise ratio is qualified, and if qualified, carrying out hearing aid processing of the processed sound signal. The present invention can quickly identify, suppress and converge unsteady noise by single microphone noise reduction without the aid of special iterative adaptive learning filter hardware built in a hearing aid chip.

Abstract: The invention discloses a method for realizing hearing aid function based on Bluetooth headset chip and a Bluetooth headset: the common Bluetooth headset chip software of Bluetooth headset is upgraded to a specific Bluetooth headset chip with hearing aid function by a hearing loss correction software; a hearing aid algorithm module is embedded into the development kit of the common Bluetooth headset chip in the form of software library by the hearing loss correction software, so that the common Bluetooth headset chip has the hearing aid function only by software upgrade; after being processed by the hearing aid algorithm module, a sound signal is output to a hearing-impaired user, so that the hearing-impaired user can use the common Bluetooth headset to realize the hearing aid function.

Abstract: Adjustable-focus laser cleaning galvanometers, cleaning systems, and cleaning methods in the field of laser cleaning are disclosed. According to aspects herein, an adjustable-focus laser cleaning galvanometer includes a body, a laser, an adjustable lens set and a galvanometer. The adjustable lens set and the laser may be mounted on the body. In some implementations, the adjustable lens set may be configured to convert or transform a laser beam emitted from the laser into a focused beam and adjust the focal length of the beam. Further, the galvanometer may be mounted on the body and can rotate or swing on the body.

Abstract: A mold includes a fixed mold, a fixture, a movable mold and an ejecting mechanism including a fixture thimble, a nozzle thimble, an auxiliary thimble, an elastic member and a top plate located in ejecting space and having a limit cavity. The nozzle thimble is extended to the molding cavity, and the auxiliary thimble is adjacent to the nozzle thimble. A first end of the fixture thimble is assembled in the limit cavity, and a second end of the fixture thimble is extended to the slider. The elastic member urges the top plate to slide towards a demolding direction. Due to the elastic member, the top plate obtains an elastic force to drive the nozzle thimble and the auxiliary thimble to retreat and separate from the long handle thereby providing a clearance for removing the fixture together with the product and avoiding scratching the product.

Abstract: A construction method for a (n,n(n?1),n?1) permutation group code based on coset partition is provided. The presented (n,n(n?1),n?1) permutation group code has an error-correcting capability of d?1 and features a strong anti-interference capability for channel interferences comprising multi-frequency interferences and signal fading. As n is a prime, for a permutation code family with a minimum distance of n?1 and a code set size of n(n?1), the invention provides a method of calculating n?1 orbit leader permutation codewords by On={?o1}?=1n-1(mod n) and enumerating residual codewords of the code set by Pn=CnOn={(l1)n-1On}={(rn)n-1On}. Besides, a generator of the code set thereof is provided. The (n,n(n?1),n?1) permutation group code of the invention is an algebraic-structured code, n?1 codewords of the orbit leader array can be obtained simply by adder and (mod n) calculator rather than multiplication of positive integers.

Abstract: A construction method for a (n,n(n?1),n?1) permutation group code based on coset partition is provided. The presented (n,n(n?1),n?1) permutation group code has an error-correcting capability of d?1 and features a strong anti-interference capability for channel interferences comprising multi-frequency interferences and signal fading. As n is a prime, for a permutation code family with a minimum distance of n?1 and a code set size of n(n?1), the invention provides a method of calculating n?1 orbit leader permutation codewords by On={?o1}?=1n-1(mod n) and enumerating residual codewords of the code set by Pn=CnOn={(l1)n-1On}={(rn)n-1On}. Besides, a generator of the code set thereof is provided. The (n,n(n?1),n?1) permutation group code of the invention is an algebraic-structured code, n?1 codewords of the orbit leader array can be obtained simply by adder and (mod n) calculator rather than multiplication of positive integers.

Abstract: A radiation residue scanning device includes a plurality of CZT detectors, a plurality of data processing units, a plurality of window acquisition circuits, a plurality of counting units, and a processor; the plurality of CZT detectors connected in one-to-one correspondence to the plurality of data processing units; the plurality of data processing units are connected in one-to-one correspondence to the plurality of window acquisition circuits; and the plurality of window acquisition circuits are connected in one-to-one correspondence to the counting units The window acquisition circuit includes a plurality of acquisition modules, and the respective acquisition modules are connected in parallel; the counting unit includes a plurality of counting subunits, the counting subunits are connected in one-to-one correspondence to the acquisition window modules, and the processor is connected to the plurality of counting units.

Abstract: Adjustable-focus laser cleaning galvanometers, cleaning systems, and cleaning methods in the field of laser cleaning are disclosed. According to aspects herein, an adjustable-focus laser cleaning galvanometer includes a body, a laser, an adjustable lens set and a galvanometer. The adjustable lens set and the laser may be mounted on the body. In some implementations, the adjustable lens set may be configured to convert or transform a laser beam emitted from the laser into a focused beam and adjust the focal length of the beam. Further, the galvanometer may be mounted on the body and can rotate or swing on the body.

Abstract: A construction method for a (n,n(n?1),n?1) permutation group code based on coset partition is provided. The presented (n,n(n?1),n?1) permutation group code has an error-correcting capability of d?1 and features a strong anti-interference capability for channel interferences comprising multi-frequency interferences and signal fading. As n is a prime, for a permutation code family with a minimum distance of n?1 and a code set size of n(n?1), the invention provides a method of calculating n?1 orbit leader permutation codewords by On={?o1}?=1n?1(mod n) and enumerating residual codewords of the code set by Pn=CnOn={(l1)n?1On}={(rn)n?1On)}. Besides, a generator of the code set thereof is provided. The (n,n(n?1),n?1) permutation group code of the invention is an algebraic-structured code, n?1 codewords of the orbit leader array can be obtained simply by adder and (mod n) calculator rather than multiplication of positive integers.

Abstract: A radiation residue scanning device includes a plurality of CZT detectors, a plurality of data processing units, a plurality of window acquisition circuits, a plurality of counting units, and a processor; the plurality of CZT detectors connected in one-to-one correspondence to the plurality of data processing units; the plurality of data processing units are connected in one-to-one correspondence to the plurality of window acquisition circuits; and the plurality of window acquisition circuits are connected in one-to-one correspondence to the counting units The window acquisition circuit includes a plurality of acquisition modules, and the respective acquisition modules are connected in parallel; the counting unit includes a plurality of counting subunits, the counting subunits are connected in one-to-one correspondence to the acquisition window modules, and the processor is connected to the plurality of counting units.

Abstract: A mold includes a fixed mold, a fixture, a movable mold and an ejecting mechanism including a fixture thimble, a nozzle thimble, an auxiliary thimble, an elastic member and a top plate located in ejecting space and having a limit cavity. The nozzle thimble is extended to the molding cavity, and the auxiliary thimble is adjacent to the nozzle thimble. A first end of the fixture thimble is assembled in the limit cavity, and a second end of the fixture thimble is extended to the slider. The elastic member urges the top plate to slide towards a demolding direction. Due to the elastic member, the top plate obtains an elastic force to drive the nozzle thimble and the auxiliary thimble to retreat and separate from the long handle thereby providing a clearance for removing the fixture together with the product and avoiding scratching the product.

Abstract: The present invention provides a method for adjusting stereoscopic image parallax. An original camera is provided. A scene space corresponding to the original camera is preset, including presetting a depth range of the scene space. Preset viewing environment parameters for displaying stereoscopic images of a scene in the scene space are configured, including presetting a depth range of an actual view space. The method further includes establishing a mapping relationship between the depth range of the actual view space and the depth range of the scene space. According to the mapping relationship, the preset viewing environment parameters and the scene space, camera parameters for adjusting stereoscopic image parallax are calculated. The original camera is adjusted based on the camera parameters to capture the scene. Thus, the stereoscopic images of the scene can be generated and presented.

Abstract: A construction method for a (n,n(n?1),n?1) permutation group code based on coset partition is provided. The presented (n,n(n?1),n?1) permutation group code has an error-correcting capability of d?1 and features a strong anti-interference capability for channel interferences comprising multi-frequency interferences and signal fading. As n is a prime, for a permutation code family with a minimum distance of n?1 and a code set size of n(n?1), the invention provides a method of calculating n?1 orbit leader permutation codewords by On={?o1}?=1n?1(mod n) and enumerating residual codewords of the code set by Pn=CnOn={(l1)n?1On}={(rn)n?1On)}. Besides, a generator of the code set thereof is provided. The (n,n(n?1),n?1) permutation group code of the invention is an algebraic-structured code, n?1 codewords of the orbit leader array can be obtained simply by adder and (mod n) calculator rather than multiplication of positive integers.

Abstract: The present invention provides a method for adjusting stereoscopic image parallax. An original camera is provided. A scene space corresponding to the original camera is preset, including presetting a depth range of the scene space. Preset viewing environment parameters for displaying stereoscopic images of a scene in the scene space are configured, including presetting a depth range of an actual view space. The method further includes establishing a mapping relationship between the depth range of the actual view space and the depth range of the scene space. According to the mapping relationship, the preset viewing environment parameters and the scene space, camera parameters for adjusting stereoscopic image parallax are calculated. The original camera is adjusted based on the camera parameters to capture the scene. Thus, the stereoscopic images of the scene can be generated and presented.