Abstract: A vibration device, including a housing having accommodating space, a vibrator, a stator and an elastic member, the elastic member is configured to suspend the vibrator in the accommodating space; the vibrator, the stator and the elastic member are accommodated in the housing, the elastic member includes two elastic plate components disposed at two opposite sides of the vibrator, each elastic plate component includes at least two V-shaped elastic plates parallelly arranged perpendicular to vibrating direction, each elastic plate component includes a first fixing portion fixedly connected with the housing, a second fixing portion fixedly connected with the vibrator, and a V-shaped elastic arm connecting the first fixing portion with the second fixing portion, the first and second fixing portions are opposite to and spaced from each other to form an opening end, and the opening ends of two V-shaped elastic plates faces away from each other.

Abstract: A vibration device, including a shell, a vibrator and a stator accommodated in the shell, and an elastic member. One of the vibrator and the stator includes a magnetic circuit unit while the other one includes a coil. The elastic member includes a first fixing portion fixedly connected with the shell, a first elastic arm and a second elastic arm bending and extending from two opposite ends of the first fixing portion, a second fixing portion extending from an end of the first elastic arm in a direction away from a geometric center of the first fixing portion, and a third fixing portion extending from an end of the second elastic arm in a direction away from the geometric center of the first fixing portion; both the second fixing portion and the third fixing portion are fixedly connected with the vibrator.

Abstract: The present disclosure provides a vibration motor. The vibration motor includes a housing with side walls; a vibration unit accommodated in the housing; a driving device; and an elastic member elastically supporting the vibration unit in the housing. The vibration unit includes a first surface and a second surface connecting the first surface. The elastic member includes a first fixed section, extension sections extending from two sides of the first fixed section and surrounding the second surface and a second fixed section connecting to the extension section and fixed on the side wall away from one side of the first fixed section. The elastic member includes a first elastic member and a second elastic member opposite to the first elastic member. The first elastic member and the second elastic member are respectively fixed on two first surfaces of the vibration unit.

Abstract: A resistivity measurement while drilling (MWD) device, including: a transmitting module arranged on an outer surface of a drill collar, for generating an induced current between the drill collar and surrounding formation by inductive coupling; a receiving electrode group including at least two electrodes, for receiving a measured current that reaches the electrode from the induced current through corresponding formation, two electrodes in the receiving electrode group being multiplexing electrodes; a resistivity calculation module configured to be connected to all or a part of the electrodes in the receiving electrode group in a measurement mode of the resistivity MWD device, to calculate the measured current received by a corresponding electrode and obtain resistivity of formation corresponding to the corresponding electrode; and a data transmission module configured to be connected to the multiplexing electrodes in a transmission mode of the resistivity MWD device, for transmitting calculated resistivity to

Abstract: The present application provides a linear vibration motor, including a base, a vibrating unit and an elastic member. The elastic member includes a first elastic member and a second elastic member, the base includes two side plates facing toward each other along the vibrating direction of the vibrating unit, the first elastic member includes a first fixing arm fixed at the vibrating unit, two first elastic arms extending from the first fixing arm and two first connecting arms bending and extending from ends of two first elastic arms; the second elastic member includes a second fixing arm fixed at the vibrating unit, two second elastic arms bending and extending from two ends of the second fixing arm and two second connecting arms extending from the two second elastic arms; and the two first connecting arms and two second connecting arms are fixed at the two side plates, respectively.

Abstract: A vibration device, including a housing having accommodating space, a vibrator, a stator and an elastic member for making the vibrator suspended in the accommodating space, the vibrator, the stator and the elastic member are accommodated in the housing, one of the vibrator and the stator includes a magnetic circuit unit while the other one includes a coil, the housing includes a pair of first side walls symmetrically arranged in a long axis direction of the housing and a pair of second side walls symmetrically arranged in a short axis direction, the elastic member includes a sheet-like spring perpendicular to vibrating direction of the vibrator, the spring includes a first fixing portion fixedly connected with the housing, a second fixing portion fixedly connected with the vibrator, and an N-shaped connecting portion connects the first fixing portion with the second fixing portion and extends along the short axis direction.

Abstract: A linear vibration motor, including: a base, a vibrating unit, an elastic member, a first stopper and a second stopper. The elastic member includes two elastic members mutually spaced and arranged by stacking. Each elastic member includes a fixing arm fixed on the vibrating unit, two elastic arms bending and extending from the fixing arm, and two connecting arms respectively bending and extending from ends of the elastic arms, the connecting arms are respectively fixed on the base; the first stopper is fixed at a side of the fixing arm away from the vibrating unit; the second stopper is fixed on a side of the connecting arm close to the vibrating unit; the first stopper and the second stopper are mutually spaced and an orthographic projection of the first stopper along the vibrating direction at least partially falls into the second stopper.

Abstract: Hydrophilic fluoroplastic substrates and methods of making hydrophilic fluoroplastic substrates from 4-acryloylmorpholine are disclosed.

Abstract: An embodiment provides a medical image processing apparatus that comprises circuitry. The circuitry obtains detection data representing detection events of radiation at a plurality of detector elements. The circuitry reconstructs an image by iteratively using an optimization-transfer algorithm to the detection data. The optimization-transfer algorithm uses a quadratic surrogate function that includes a curvature. The curvature is calculated using an inverse-background image.

Abstract: The present disclosure relates to a vibration motor, comprising a housing, a vibrator, an elastic member, a first block and a second block; the elastic member comprises first elastic member and second elastic member facing toward each other and each comprises a first fixing portion, two extending portions and two second fixing portions, the first fixing portion is fixed on the first surface, the two extending portion extend from the first fixing portion along two opposite directions and surrounds the second surface, the two second fixing portions are fixed on the side wall away from the first fixing portion; the first block is on a side of the first fixing portion corresponding to the side wall, the second block is on the side wall, faces towards the first block and is spaced from the first block. The second block is adjacent to the second fixing portion and is between the two second fixing portions.

Abstract: An apparatus and method are provided for computed tomography (CT) imaging to reduce truncation artifacts due to a part of an imaged object being outside the scanner field of view (FOV) for at least some views of a CT scan. After initial determining extrapolation widths to extend the projection data to fill a truncation region, the extrapolation widths are combined into a padding map and smoothed to improve uniformity and remove jagged edges. Then a hybrid material model fits the measured projection data nearest the truncation region to extrapolate projection data filling the truncation region. Smoothing the padding map is improved by the insight that in general smaller extrapolation widths are more accurate and trustworthy. Further, practical applications often include multiple inhomogeneous materials. Thus, the hybrid material model provides a better approximation than single material models, and more accurate fitting is achieved.

Abstract: A method of calculating a system matrix for time-of-flight (TOF) list-mode reconstruction of positron-emission tomography (PET) images, the method including determining a TOF geometric projection matrix G including effects of object attenuation; estimating an image-blurring matrix R in image space; obtaining a diagonal matrix D that includes TOF-based normalization factor; and calculating the system matrix H as H=DGR.

Abstract: A method and apparatus is provided to iteratively reconstruct a computed tomography (CT) image using a hybrid pre-log and post-log iterative reconstruction method. A pre-log formulation is applied to values of the projection data that are less than a threshold (e.g., X-ray intensities corresponding to high absorption trajectories). The pre-log formulation has better noise modeling and better image quality for reconstructed images, but is slow to converge. Projection data values above the threshold are processed using a post-log formulation, which has fast convergence but poorer noise handling. However, the poorer noise handling has little effect on high value projection data. Thus, the hybrid pre-log and post-log method provides improved image quality by more accurately modeling the noise of low count projection data, without sacrificing the fast convergence of the post-log method, which is applied to high-count projection data.

Abstract: A vibration motor is disclosed. The vibration motor includes a housing forming a receiving space; a plurality of elastic members accommodated in the receiving space and connected to the housing; a vibration unit suspended by the elastic members in the receiving space, the vibration unit including a weight having a through hole; a plurality of blocks arranged on the housing, the block at least partially received in the through hole; and a plurality of positioning portions formed on the housing and protruding toward the weight for engaging with the blocks for fixing the blocks.

Abstract: A vibration device, including a housing having accommodating space, a vibrator, a stator and an elastic member, the elastic member is configured to suspend the vibrator in the accommodating space; the vibrator, the stator and the elastic member are accommodated in the housing, the elastic member includes two elastic plate components disposed at two opposite sides of the vibrator, each elastic plate component includes at least two V-shaped elastic plates parallelly arranged perpendicular to vibrating direction, each elastic plate component includes a first fixing portion fixedly connected with the housing, a second fixing portion fixedly connected with the vibrator, and a V-shaped elastic arm connecting the first fixing portion with the second fixing portion, the first and second fixing portions are opposite to and spaced from each other to form an opening end, and the opening ends of two V-shaped elastic plates faces away from each other.

Abstract: The present disclosure provides a vibration motor. The vibration motor includes a housing with side walls; a vibration unit accommodated in the housing; a driving device; and an elastic member elastically supporting the vibration unit in the housing. The vibration unit includes a first surface and a second surface connecting the first surface. The elastic member includes a first fixed section, extension sections extending from two sides of the first fixed section and surrounding the second surface and a second fixed section connecting to the extension section and fixed on the side wall away from one side of the first fixed section. The elastic member includes a first elastic member and a second elastic member opposite to the first elastic member. The first elastic member and the second elastic member are respectively fixed on two first surfaces of the vibration unit.

Abstract: The present application provides a linear vibration motor, including a base, a vibrating unit and an elastic member. The elastic member includes a first elastic member and a second elastic member, the base includes two side plates facing toward each other along the vibrating direction of the vibrating unit, the first elastic member includes a first fixing arm fixed at the vibrating unit, two first elastic arms extending from the first fixing arm and two first connecting arms bending and extending from ends of two first elastic arms; the second elastic member includes a second fixing arm fixed at the vibrating unit, two second elastic arms bending and extending from two ends of the second fixing arm and two second connecting arms extending from the two second elastic arms; and the two first connecting arms and two second connecting arms are fixed at the two side plates, respectively.

Abstract: A vibration device includes a housing having accommodating space, a vibrator, a stator and an elastic member configured to suspend the vibrator in the accommodating space, the vibrator, the stator and the elastic member are accommodated in the housing, one of the vibrator and the stator includes a magnetic circuit unit while the other one includes a coil, the housing includes a pair of first side walls symmetrically arranged in its long axis direction and a pair of second side walls symmetrically arranged in a short axis direction, the elastic member is a sheet-like spring perpendicular to vibrating direction of the vibrator, the elastic member includes a first fixing portion fixedly connected with the second side wall, a second fixing portion fixedly connected with the vibrator, and an S-shaped connecting portion which connects the first fixing portion with the second fixing portion and extends along long axis direction.

Abstract: A linear vibration motor, including: a base, a vibrating unit, an elastic member, a first stopper and a second stopper. The elastic member includes two elastic members mutually spaced and arranged by stacking. Each elastic member includes a fixing arm fixed on the vibrating unit, two elastic arms bending and extending from the fixing arm, and two connecting arms respectively bending and extending from ends of the elastic arms, the connecting arms are respectively fixed on the base; the first stopper is fixed at a side of the fixing arm away from the vibrating unit; the second stopper is fixed on a side of the connecting arm close to the vibrating unit; the first stopper and the second stopper are mutually spaced and an orthographic projection of the first stopper along the vibrating direction at least partially falls into the second stopper.

Abstract: The present disclosure relates to a vibration motor, comprising a housing, a vibrator, an elastic member, a first block and a second block; the elastic member comprises first elastic member and second elastic member facing toward each other and each comprises a first fixing portion, two extending portions and two second fixing portions, the first fixing portion is fixed on the first surface, the two extending portion extend from the first fixing portion along two opposite directions and surrounds the second surface, the two second fixing portions are fixed on the side wall away from the first fixing portion; the first block is on a side of the first fixing portion corresponding to the side wall, the second block is on the side wall, faces towards the first block and is spaced from the first block. The second block is adjacent to the second fixing portion and is between the two second fixing portions.