Abstract: Disclosed is a charged particle beam system, which includes: a particle source, a column and a specimen chamber with a first movable vacuum window. The particle source is configured to generate a charged particle beam which impinges the specimen to be detected placed in a specimen chamber. The column includes a deflection device for deflecting the charged particle beam and a focusing device for focusing the charged particle beam. The charged particle beam system is compatible with multiple external optical systems to achieve simultaneous detection or fast-switching detection of the specimen. An opto-electro simultaneous detection system and the method are also disclosed.

Abstract: Systems and methods for displaying a view of a virtual file system through a file viewer of a computer operating system are described herein. In an embodiment, an application receives a request to return data to display in a view of a file repository from a service of a computer operating system which is configured to cause displaying of the view of the file repository. The application accesses stored configuration information which identifies one or more particular queries which are mapped to a particular folder of the file repository. The application transmits the one or more particular queries to a database management system and receives structured data that satisfies the one or more particular queries in response.

Abstract: A multi-beam apparatus for observing a sample with high resolution and high throughput is proposed. In the apparatus, a source-conversion unit changes a single electron source into a virtual multi-source array, a primary projection imaging system projects the array to form plural probe spots on the sample, and a condenser lens adjusts the currents of the plural probe spots. In the source-conversion unit, the image-forming means is on the upstream of the beamlet-limit means, and thereby generating less scattered electrons. The image-forming means not only forms the virtual multi-source array, but also compensates the off-axis aberrations of the plurality of probe spots.

Abstract: A camera module to retain a smooth and easy focusing movement through components connected together by threads includes a lens bracket and a lens barrel. The lens bracket carries an optical lens and includes sidewall with a first internal thread. The optical lens includes sensor end. The sensor end includes a lateral surface with an external thread which corresponds to the first internal thread. The lateral surface defines several notches extending from the end of the lateral surface down through the external threads to reduce any clamping or high turning resistance between the internal and the external threads.

Abstract: A camera module with reduced light leakage includes a printed circuit board and a mounting bracket mounted on the printed circuit board. The printed circuit board includes a first surface and at least one side surface perpendicularly connected to the first surface. A step is defined at the printed circuit board. The step passes through the first surface and at least one side surface. A flange is defined on the mounting bracket. The flange is received and fixed in the step and this structure places less reliance on the strength and opacity of the particular adhesive used.

Abstract: A camera includes a circuit board, an image sensing chip, a package base, a lens module, a flexible circuit board, and a first carrier plate. The circuit board includes a first surface and an opposite second surface. The circuit board defines a window through the first surface and the second surface. The image sensing chip is mounted to the second surface and includes a photosensitive area viewable through the window. The package base is mounted to the first surface and defines a light hole. The lens module is mounted to the package base. The first carrier plate is mounted to the second surface and covers the image sensing chip. The circuit board further includes an end portion not covered by the first carrier plate. The flexible circuit board is mounted to the second surface of the end portion and is electrically coupled to the image sensing chip.

Abstract: The present disclosure provides a metal surface protective layer and a preparation method thereof. The metal surface protective layer includes a base powder layer, a medium powder layer, a physical vapor deposition (PVD) metal coating and a transparent powder layer from inside to outside. The PVD metal coating is obtained by a magnetron vacuum sputtering method. The PVD metal coating at least includes a mixed coating adopting two targets: a Ni—Cr alloy and pure chromium.

Abstract: The present disclosure provides a modeling method, apparatus, device and storage medium of a dynamic cardiovascular system. The method includes: obtaining CMR data and CCTA data of a patient to be operated; constructing a dynamic ventricular model of the patient to be operated using the CMR data; constructing a dynamic heart model of the patient to be operated according to the dynamic ventricular model and a preset heart model; constructing a coronary artery model of the patient to be operated using the CCTA data; and constructing a dynamic cardiovascular system model of the patient to be operated according to the dynamic heart model and the coronary artery model, and constructing a personalized dynamic cardiovascular system model for different patients.

Abstract: Systems and methods for displaying a view of a virtual file system through a file viewer of a computer operating system are described herein. In an embodiment, an application receives a request to return data to display in a view of a file repository from a service of a computer operating system which is configured to cause displaying of the view of the file repository. The application accesses stored configuration information which identifies one or more particular queries which are mapped to a particular folder of the file repository. The application transmits the one or more particular queries to a database management system and receives structured data that satisfies the one or more particular queries in response.

Abstract: The disclosure provides a metal surface protective layer and a preparation method thereof. The metal surface protective layer comprises an organic medium layer, a metal coating layer and a transparent powder layer from inside to outside, wherein the organic medium layer is formed by spraying organic medium powder onto the surface of metal to be treated, the metal coating layer is formed by performing magnetron sputtering PVD plating on the organic medium layer, the organic medium layer is subjected to surface activation and cleaning treatment before the magnetron sputtering PVD plating, and the transparent powder layer is formed by spraying transparent powder onto the metal coating layer.

Abstract: A voice coil motor includes a base, a housing, a lower-resilient member, a lens frame, a coil, a magnet, an upper-resilient member, an upper cover plate, and a pin arranged on the base. The lower-resilient member, the lens frame, the coil, the magnet, the upper-resilient member, and the upper cover plate are arranged in sequence between the base and the housing. The lens frame and the coil are integrally formed. The coil surrounds an outer surface of the lens frame.

Abstract: The present invention discloses a speaker having a frame, a vibrating system and a magnetic circuit system both fixed on the frame. The magnetic circuit system having a yoke fixed on the frame. The speaker further includes a suspension having a first fixing portion fixed with the frame. The first fixing portion includes a main body portion located in the middle of the first fixing portion and a welding pad portion formed by bending from two opposite ends of the main body portion toward a direction away from both the main body portion and the yoke. The frame includes a first surface connected to the first fixing portion and an avoiding portion formed by recessing from the first surface toward a direction away from the yoke. The welding pad portion is accommodated in the avoiding portion. A total height of the spealer is reduced.

Abstract: The present invention discloses a speaker having a frame, a vibrating system and a magnetic circuit system both fixed on the frame. The vibrating system having a diaphragm fixed on the frame and a voice coil for driving the diaphragm to vibrate and produce sound. The frame has a side wall for forming a receiving space, and the side wall includes a top plane fixedly connected with the diaphragm. An angle between the top plane and a vibrating direction of the vibrating system close to both the receiving space and the diaphragm is an obtuse angle or an acute angle. Compared with the related art, the speaker of the present invention has advantages of excellent acoustic performance and better reliability.

Abstract: Method, apparatus and computer program product for dynamic link processing engine. For example, the apparatus includes at least one processor and at least one non-transitory memory including program code.

Abstract: The present invention discloses a speaker having a frame, a vibrating system and a magnetic circuit system both fixed on the frame. The magnetic circuit system having a yoke fixed on the frame, a main magnet fixed on the yoke, secondary magnets spaced apart from the main magnet and a main pole plate attached to the main magnet. The main pole plate is provided with a through hole. The main magnet includes a main body portion fixed on the yoke and an extending portion protruding and extending from the main body portion toward the vibrating system. The extending portion is located at least partially within the through hole. The speaker of the present invention has better acoustic performance.

Abstract: A low voltage scanning electron microscope is disclosed, which includes: an electron source configured to generate an electron beam; an electron beam accelerator configured to accelerate the electron beam; a compound objective lens configured to converge the electron beams accelerated by the electron beam accelerator; a deflection device arranged between the inner wall of the magnetic lens and the optical axis of the electron beam and configured to deflect the electron beam; a detection device comprising a first sub-detection device for receiving secondary and backscattered electrons from the specimen, a second sub-detection device for receiving backscattered electrons, and a control device for changing the trajectories of the secondary electrons and the backscattered electrons; an electrostatic lens comprising the second sub-detection device, a specimen stage, and a control electrode for reducing the moving speed of the electron beam and changing the moving directions of the secondary and the backscattered e

Abstract: The present disclosure is directed toward systems, methods, and computer readable media for training and utilizing an item-level importance sampling model to evaluate and execute digital content selection policies. For example, systems described herein include training and utilizing an item-level importance sampling model that accurately and efficiently predicts a performance value that indicates a probability that a target user will interact with ranked lists of digital content items provided in accordance with a target digital content selection policy. Specifically, systems described herein can perform an offline evaluation of a target policy in light of historical user interactions corresponding to a training digital content selection policy to determine item-level importance weights that account for differences in digital content item distributions between the training policy and the target policy.

Abstract: A lens module relieved against the build-up of working heat and any condensation by allowing the release of same comprises a circuit board, a support base, and an optical filter. The support base is fixed on a first surface of the circuit board. The support base defines a through hole configured to receive the optical filter. The support base further defines at least one gas pressure relieving structure. The optical filter and the circuit board seal opposite sides of the support base to form a receiving space. The gas pressure relieving structure allows communication between the receiving space and the exterior such that heat generated in the receiving space is transported out. The lens module is dustproof, waterproof, and can breathe. An electronic device including the lens module is also disclosed.

Abstract: One modified source-conversion unit and one method to reduce the Coulomb Effect in a multi-beam apparatus are proposed. In the modified source-conversion unit, the aberration-compensation function is carried out after the image-forming function has changed each beamlet to be on-axis locally, and therefore avoids undesired aberrations due to the beamlet tilting/shifting. A Coulomb-effect-reduction means with plural Coulomb-effect-reduction openings is placed close to the single electron source of the apparatus and therefore the electrons not in use can be cut off as early as possible.

Abstract: A voice coil motor includes a housing, a cover plate, an upper elastic member; a movable assembly, an immovable assembly, a lower elastic member, and a base cooperating with the housing to receive the cover plate, the upper elastic member, the movable assembly, the immovable assembly, and the lower elastic member. The base is made of laser direct structuring material. A metal layer is formed on a region of the base connecting the housing by Laser Direct Structuring processes, and the metal layer is fixed on the housing by laser welding or solder paste spot welding. The disclosure also provides an electronic device having the voice coil motor.