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 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: A vibration motor is disclosed. The vibration motor includes a housing having a bottom wall and a sidewall extending from the bottom wall; a cover engaging with the housing for forming a receiving space; a first vibration system suspended by a first elastic member in the receiving space; a second vibration system suspended by a second elastic member in the receiving space; a first restricting hole penetrating the first vibration system; a second restricting hole penetrating the second vibration system; a channel formed cooperatively by the first restricting hole and the second restricting hole; a restricting block having one end fixed to the cover, another end fixed to the bottom wall, and a middle portion at least partially received in the channel.

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

Abstract: A method of fabricating a thin film transistor, the method includes applying a first ink containing metallic particles to a first screen mask, and using the first screen mask to deposit the first ink to form a source electrode and a drain electrode on a substrate bearing a layer of carbon nanotubes (CNT). The method includes applying a second ink containing a dielectric material to a second screen mask, and using the second screen mask to deposit the second ink to form a layer of the dielectric material on the layer of CNT between the source electrode and the drain electrode. The method includes applying a third ink containing metallic particles to a third screen mask, and using the third screen mask to deposit the first ink to form a metallic gate electrode on the layer of the dielectric material to form the thin film transistor.

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

Abstract: A method and apparatus is provided to iteratively reconstruct a PET image for emission data using separable quadratic surrogates (SQS). The quadratic surrogates include a Poisson likelihood surrogate that has a curvature that depends on a back-projection of an inverse of mean-background signal. The method can be used with Nesterov acceleration and ordered subsets to achieve quadratic convergence to an image minimizing a Poisson Likelihood objective function that includes a regularizer that penalizes roughness in the reconstructed image.

Abstract: A method and apparatus is provided to predict a regularization parameter for regularized iterative reconstruction of radiation detection data (e.g., computed tomography (CT) data or positron-emission tomography (PET) data) to generate a reconstructed image having specified statistical properties. The predicted regularization parameter is determined using a root-finding method performed on a transcendental objective function. The objective function is calculated using a three-dimensional Fourier transforms of an approximation to a shift invariant Hessian matrix and of matrix products between the forward-projection and back projection matrices of the system model and various (statistical) weight matrices. The specified statistical properties can include the standard deviation within a region of interest, a local spatial resolution, a low-contrast-detectability metric, etc.

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: 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 method and apparatus for generating crystal efficiency correction factors by performing a normalization calibration based on delayed data. The method and apparatus obtain delayed data from a scan of a patient using a Positron Emission Tomography (PET) scanner, generate a sinogram from the obtained delayed data, determine, using a processing circuit, mean fan and block line of response sensitivities from the generated sinogram, determine, using the processing circuit, mean detector efficiency based on the determined mean fan and block line of response sensitivities, determine, using the processing circuit, an individual crystal efficiency based on the determined mean fan and block line of response sensitivities and the mean detector efficiency for each module, and calculate the crystal efficiency correction factors based on the determined individual crystal efficiency of each module.

Abstract: An apparatus for performing a non-local means (NLM) filter is described. The pixel of the NLM-filtered image are weighted averages of pixels from a noisy image, where the weights are a measure of the similarity between patches of the noisy image. The similarity weights can be calculated using a Kullback-Leibler or a Euclidean distance measure. The similarity weights can be based on filtered patches of the noisy image. The similarity weights can be based on a similarity measure between patches of an anatomical image corresponding to the noisy image. The similarity weights can be calculated using a time series of noisy images to increase the statistical sample size of the patches. The similarity weights can be calculated using a weighted sum of channel similarity weights calculated between patches of noisy image that have been band-pass filtered. The NLM-filtered image can also be blended with a non-NLM-filtered image.

Abstract: A method and apparatus is provided to predict a regularization parameter for regularized iterative reconstruction of radiation detection data (e.g., computed tomography (CT) data or positron-emission tomography (PET) data) to generate a reconstructed image having specified statistical properties. The predicted regularization parameter is determined using a root-finding method performed on a transcendental objective function. The objective function is calculated using a three-dimensional Fourier transforms of an approximation to a shift invariant Hessian matrix and of matrix products between the forward-projection and back projection matrices of the system model and various (statistical) weight matrices. The specified statistical properties can include the standard deviation within a region of interest, a local spatial resolution, a low-contrast-detectability metric, etc.

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 motor is disclosed. The vibration motor includes a housing having a bottom wall and a sidewall extending from the bottom wall; a cover engaging with the housing for forming a receiving space; a first vibration system suspended by a first elastic member in the receiving space; a second vibration system suspended by a second elastic member in the receiving space; a first restricting hole penetrating the first vibration system; a second restricting hole penetrating the second vibration system; a channel formed cooperatively by the first restricting hole and the second restricting hole; a restricting block having one end fixed to the cover, another end fixed to the bottom wall, and a middle portion at least partially received in the channel.

Abstract: An apparatus for performing a non-local means (NLM) filter is described. The pixel of the NLM-filtered image are weighted averages of pixels from a noisy image, where the weights are a measure of the similarity between patches of the noisy image. The similarity weights can be calculated using a Kullback-Leibler or a Euclidean distance measure. The similarity weights can be based on filtered patches of the noisy image. The similarity weights can be based on a similarity measure between patches of an anatomical image corresponding to the noisy image. The similarity weights can be calculated using a time series of noisy images to increase the statistical sample size of the patches. The similarity weights can be calculated using a weighted sum of channel similarity weights calculated between patches of noisy image that have been band-pass filtered. The NLM-filtered image can also be blended with a non-NLM-filtered image.

Abstract: A method and system for determining a position of a source including obtaining prompt data and related delayed data from a Positron Emission Tomography (PET) scanner, generating a sinogram from the prompt data, generating crystal efficiency correction factors by performing a normalization calibration based on the obtained delayed data, performing normalization correction on the generated sinogram based on the crystal efficiency correction factors to generate a corrected sinogram, rebinning the corrected sinogram to generate a plurality of two-dimensional sinogram slices, and determining a central axis for each of the plurality of two-dimensional sinogram slices using a center estimation process.

Abstract: An antenna device and a terminal are provided. The antenna device includes: a shielding device, which at least comprises a first part made of a material capable of shielding a wireless signal, the shielding device being moveable, wherein the first part shields an antenna when located at a first position, making the antenna unable to receive and/or transmit a signal; the antenna works normally when the first part is moved out of the first position.

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