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99 results about "Interaction point" patented technology

In particle physics, an interaction point (IP) is the place where particles collide in an accelerator experiment. The nominal interaction point is the design position, which may differ from the real or physics interaction point, where the particles actually collide. A related, but distinct, concept is the primary vertex: the reconstructed location of an individual particle collision.

Method for fault-injection test based on virtual machine

The invention provides a method for using a virtual machine to improve the performance in software-testing based on fault injection. Based on the EAI (environment-application interaction) model put forward by WENLIANG DU, Syracuse University (US), the fault injection is carried out on the interaction point of the application program and the environment thereof in the invention to disturb the environment and further test the software vulnerability, thus reducing the semantic difference between the injected fault and the actual fault, reducing the number of test cases and respectively achieving the two functional parts of the test tool at the host and guest of the virtual machine; and based on the shared files between the virtual machine and the guest, and the backup and recovery mechanism of the virtual machine, the invention can improve the robustness and flexibility of the test tool. The tool generated by the method comprises an application program configuration file (10), a fault test case generator (5), a security analysis module (6), a graphical user interface (7), an environment recovery module (9), a fault injector (11) and a data collector (12), wherein the tool further comprises software (13) to be tested and shared memory auxiliary modules (14), (15) and (16) of the virtual machine for sharing the data related to the tests. The method of the invention is capable of effectively detecting and simulating the security breaches in the software and improving the security of the software.
Owner:曾凡平 +2

Method and arrangement for the plasma-based generation of intensive short-wavelength radiation

The invention is directed to a method and an arrangement for the plasma-based generation of intensive short-wavelength radiation, particularly EUV radiation. The object of the invention, to find a novel possibility for plasma-based generation of intensive soft x-radiation, particularly EUV radiation, which permits efficient energy conversion in the desired spectral band with high repetition frequency (several kHz) of the plasma excitation, minimized emission of debris and low erosion of the nozzle of the target generator, is met according to the invention in that an additional energy beam is directed on the target flow spatially in advance of its interaction with the high-energy beam, the target flow being acted upon by this additional energy beam with substantially weaker energy pulses compared to the high-energy beam in order to divide the target flow into a first portion and at least one second portion, wherein the target flow is excited at an interaction point within the second portion by the high-energy beam for generating a hot, radiating plasma, and the second portion is decoupled from the first portion and therefore from the target generator in such a way that a hydrodynamic disturbance generated in the second portion by the pulse of the high-energy beam is transmitted into the first portion only negligibly.
Owner:XTREME TECH

Three dimensional radiation detector

A pixelated detector assembly comprising a stack of thin detector crystals, each detector crystal having a pair of planar surfaces bound by edges substantially thinner than the dimensions of the surfaces. The stack is disposed such that the radiation to be detected is incident on one set of edges of the stack of detector crystals. The dimension of the planar surfaces in the general direction of incidence of the radiation incidence is sufficient to ensure that substantially all of the high energy photons to be detected are absorbed within the depth of the detector assembly. Each of the detector crystals has a two-dimensional pixelated anode array formed on one of its planar surfaces. A cathode is formed on its opposite planar surface, preferably covering substantially all of the surface. The position of interaction of a photon in the plane perpendicular to the direction of the incident radiation, is determined by which of the detector crystals in the stack detects the absorption, and by which of the rows of pixelated anodes in that crystal detects the absorption. The depth of interaction of a photon is determined by the location of the particular anode pixel in the above-mentioned row of pixelated anodes where the photon absorption is detected. The detector assembly is thus able to detect the point of interaction of a photon in all three dimensions.
Owner:ORBOTECH LTD

Canny model-based method for segmenting three-dimensional medical image

The invention relates to a Canny model-based method for segmenting a three-dimensional medical image and belongs to the technical field of image processing. The method comprises the following steps of: capturing a three-dimensional section image Imnk comprising a user-interested target in an original three-dimensional medical image IMNK through user interaction; performing median filtering on the three-dimensional section image Imnk to remove image noise; acquiring a Canny edge information image Cmnk of the three-dimensional section image Imnk which is subjected to the median filtering by a Canny method; searching a target edge and extracting a complete enclosed target edge according to interaction point coordinates (i0, j0) near the target edge of a certain frame of image of the user; and extracting interested target edges Emnk of all frames in the three-dimensional section image Imnk, wherein the extracted interested target edges Emnk serve as a segmentation result of the three-dimensional medical image. The Canny model-based method for segmenting the three-dimensional medical image uses a few user interaction processes, has a small calculated amount and can rapidly and effectively extract edge information of interested targets in the three-dimensional medical image so as to complete the segmentation of the three-dimensional medical image.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA

Arrangement for providing target material for the generation of short-wavelength electromagnetic radiation

The invention is directed to an arrangement for providing target material for the generation of short-wavelength electromagnetic radiation, in particular EUV radiation. It is the object of the invention to find a novel possibility for providing target material for the generation of short-wavelength radiation based on an energy beam induced plasma which makes it possible to supply a reproducible successive flow of mass-limited targets in the interaction chamber in such a way that only the amount of target material needed for efficient generation of radiation achieves plasma generation. This object is met, according to the invention, in that the target generator opens into a selection chamber which precedes the interaction chamber and which has, along the target path, an outlet opening into the interaction chamber and in which a target selector is arranged. The target selector has elements for eliminating individual targets needed for the regular target sequence of the target generator, so that only the individual targets needed for efficient plasma generation and radiation generation corresponding to the pulse frequency of the energy beam are admitted to the interaction point.
Owner:USHIO DENKI KK

Method and arrangement for the plasma-based generation of intensive short-wavelength radiation

The invention is directed to a method and an arrangement for the plasma-based generation of intensive short-wavelength radiation, particularly EUV radiation. The object of the invention, to find a novel possibility for plasma-based generation of intensive soft x-radiation, particularly EUV radiation, which permits efficient energy conversion in the desired spectral band with high repetition frequency (several kHz) of the plasma excitation, minimized emission of debris and low erosion of the nozzle of the target generator, is met according to the invention in that an additional energy beam is directed on the target flow spatially in advance of its interaction with the high-energy beam, the target flow being acted upon by this additional energy beam with substantially weaker energy pulses compared to the high-energy beam in order to divide the target flow into a first portion and at least one second portion, wherein the target flow is excited at an interaction point within the second portion by the high-energy beam for generating a hot, radiating plasma, and the second portion is decoupled from the first portion and therefore from the target generator in such a way that a hydrodynamic disturbance generated in the second portion by the pulse of the high-energy beam is transmitted into the first portion only negligibly.
Owner:XTREME TECH

Three dimensional radiation detector

A pixelated detector assembly comprising a stack of thin detector crystals, each detector crystal having a pair of planar surfaces bound by edges substantially thinner than the dimensions of the surfaces. The stack is disposed such that the radiation to be detected is incident on one set of edges of the stack of detector crystals. The dimension of the planar surfaces in the general direction of incidence of the radiation incidence is sufficient to ensure that substantially all of the high energy photons to be detected are absorbed within the depth of the detector assembly. Each of the detector crystals has a two-dimensional pixelated anode array formed on one of its planar surfaces. A cathode is formed on its opposite planar surface, preferably covering substantially all of the surface. The position of interaction of a photon in the plane perpendicular to the direction of the incident radiation, is determined by which of the detector crystals in the stack detects the absorption, and by which of the rows of pixelated anodes in that crystal detects the absorption. The depth of interaction of a photon is determined by the location of the particular anode pixel in the above-mentioned row of pixelated anodes where the photon absorption is detected. The detector assembly is thus able to detect the point of interaction of a photon in all three dimensions.
Owner:ORBOTECH LTD

Interactive intelligent conference system based on pattern recognition and using method thereof

The invention relates to an interactive intelligent conference system based on pattern recognition and a using method thereof. The interactive intelligent conference system comprises five stepper motors, a camera, a projection screen, a meeting room and an electronic stylus; the control interface of each stepper motor is provided with a wireless fidelity controller; each wireless fidelity controller controls each stepper motor according to a control signal sent by a computer control terminal; the four stepper motors are arranged at four corners of the ceiling of the meeting room respectively;gears of revolving shafts of the stepper motors are connected with a chain made of a rope respectively; the fifth stepper motor is vertically hung and connected at an interaction point of the four chains made of the rope in a Z shaft direction by using another chain made of the rope; the camera is hung at the tail end of the chain made of the rope below the stepper motor in the Z shaft direction;and the camera acquires projection light spot signals of the electronic stylus on the projection screen and transmits the signals to the computer control terminal. The interactive intelligent conference system can meet the interactive intelligent requirement of the conference exhibition and can be widely applied to teaching or meeting.
Owner:RENMIN UNIVERSITY OF CHINA
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