Abstract: A static CT apparatus and an imaging method for the same are provided. The imaging method includes: acquiring initial projection data of an inspected object at different angles by using a distributed ray source and a detector, where the initial projection data includes projection data that is directly obtained by the detector based on the rays emitted from a plurality of ray source points; obtaining a first CT image using a reconstruction algorithm according to the acquired initial projection data; dividing the first CT image into N first sub-images, where N is a positive integer greater than or equal to 1, and a union of the N first sub-images covers the entire first CT image; optimizing the N first sub-images to obtain N second sub-images; and merging the N second sub-images to obtain a second CT image.

Abstract: A device and a method to detect unauthorized opening of a casing is disposed in the upper or lower casing of an apparatus. The device includes a base plate with vibrator, carrier, and sensor on the lower case, and receiving grooves. Balls of a lesser number than the number of receiving grooves are installed in the grooves in a predetermined arrangement by the manufacturer. A waveguide element and magnet, fixed on the upper casing, is in contact with the balls, and when the waveguide is vibrated, the number and locations of the balls govern the form of a setting signal derived therefrom at the factory. If the upper casing is separated from the lower casing, the waveguide element separates from the carrier, the magnetic element gathers the balls, the predetermined arrangement being thereby lost, when tested by an authorized repair engineer.

Abstract: A device to detect unauthorized opening of a casing is disposed in the upper or lower casing of an apparatus. The device includes a base plate with vibrator, carrier, and sensor on the lower case, and receiving grooves. Balls of a lesser number than the number of receiving grooves are installed in the grooves in a predetermined arrangement by the manufacturer. A waveguide element and magnet, fixed on the upper casing, is in contact with the balls, and when the waveguide is vibrated, the number and locations of the balls govern the form of a setting signal derived therefrom at the factory. If the upper casing is separated from the lower casing, the waveguide element separates from the carrier, the magnetic element gathers the balls, the predetermined arrangement being thereby lost, when tested by an authorized repair engineer.

Abstract: An intelligent passenger inspection channel system and method are provided. The system includes: a passenger entrance device; a first camera, provided at the passenger entrance device for capturing a first image of a number of passengers going to pass through the device; a luggage inspection device; a second camera, provided at an entrance of the luggage inspection device for capturing a second image of a luggage entering the entrance and a corresponding passenger; a third camera, provided at an exit of the luggage inspection device for capturing a third image of a luggage leaving the exit and a corresponding passenger; a personnel security inspection device; a fifth camera, provided at the personnel security inspection device for capturing a fifth image of an inspector's inspection behavior; and a sixth camera, provided in a passenger inspection channel for capturing a sixth image of an entire travel of a passenger within the channel.

Abstract: An LED bulb includes a center ring, a burner and an elastic component. The center ring includes a central opening, a first flat rim extending along a first part of an outer edge of the central opening, and a first notch cut-out beyond the central opening at an end of the first flat rim. The burner is disposed at least in part in the central opening and includes a first pin that has a first flat side face. The elastic component is configured to press the first flat rim of the center ring against the first flat side face of the first pin of the burner.

Abstract: A multi-channel static CT device is provided, and the multi-channel static CT device includes: a scanning channel including a plurality of scanning sub-channels; a distributed X-ray source including a plurality of ray emission points arranged around the scanning channel; and a detector module including a plurality of detectors arranged around the scanning channel, wherein the plurality of detectors are arranged corresponding to the plurality of ray emission points.

Abstract: A device to detect unauthorized opening of a casing is disposed in the upper or lower casing of an apparatus. The device includes a base plate with vibrator, carrier, and sensor on the lower case, and receiving grooves. Balls of a lesser number than the number of receiving grooves are installed in the grooves in a predetermined arrangement by the manufacturer. A waveguide element and magnet, fixed on the upper casing, is in contact with the balls, and when the waveguide is vibrated, the number and locations of the balls govern the form of a setting signal derived therefrom at the factory. If the upper casing is separated from the lower casing, the waveguide element separates from the carrier, the magnetic element gathers the balls, the predetermined arrangement being thereby lost, when tested by an authorized repair engineer.

Abstract: Provided are a method and an apparatus of training a radiation image recognition model online and a method and an apparatus of recognizing a radiation image. Preset data is pre-stored in a radiation inspection system, and the preset data includes a first radiation image. The method of training radiation image recognition model online includes: collecting a second radiation image at the radiation inspection site; labeling the second radiation image online to form on-site collected data having a second labeling information, wherein the second labeling information is an incomplete labeling information of the second radiation image, and the second labeling information is used to indicate at least one of objects of interest in the second radiation image; synthesizing the preset data and the on-site collected data online to form a training data set; and training the radiation image recognition model online using the training data set.

Abstract: An LED bulb includes a center ring, a burner and an elastic component. The center ring includes a central opening, a first flat rim extending along a first part of an outer edge of the central opening, and a first notch cut-out beyond the central opening at an end of the first flat rim. The burner is disposed at least in part in the central opening and includes a first pin that has a first flat side face. The elastic component is configured to press the first flat rim of the center ring against the first flat side face of the first pin of the burner.

Abstract: Provided is a method of verifying an authenticity of declaration information. The method includes: acquiring a machine-detected radiation image obtained by scanning a container loaded with an article; acquiring a declaration information for declaring the article in the container; performing an identification on an image information of the article in the machine-detected radiation image to obtain an image feature corresponding to the machine-detected radiation image; performing an identification on a text information of the article in the declaration information to obtain a text feature corresponding to the declaration information; screening a declaration category of the article in the container by taking the image feature as an input information and the text feature as an external introduction feature; and determining that the declaration information is in doubt when a declaration category of at least one article in the container does not belong to a declaration category in the declaration information.

Abstract: A multi-channel static CT device is provided, and the multi-channel static CT device includes: a scanning channel including a plurality of scanning sub-channels; a distributed X-ray source including a plurality of ray emission points arranged around the scanning channel; and a detector module including a plurality of detectors arranged around the scanning channel, wherein the plurality of detectors are arranged corresponding to the plurality of ray emission points.

Abstract: A refrigeration system and refrigeration method for a data center are disclosed. The refrigeration system includes: a first heat exchanger disposed on a back plate of an indoor cabinet of the data center, and a phase-change heat-exchange cooling tower disposed outdoor of the data center. The first heat exchanger and the phase-change heat-exchange cooling tower are communicated by a secondary refrigerant delivery pipeline. The phase-change heat-exchange cooling tower transfers heat carried in the secondary refrigerant into air and condenses the secondary refrigerant to a liquid again; the secondary refrigerant employs a phase-change heat-exchange working medium. An air pump is disposed in the phase-change heat-exchange cooling tower and on a by-pass of the secondary refrigerant delivery pipeline to pressurize the secondary refrigerant in gas-state delivered in the secondary refrigerant delivery pipeline to increase the condensing pressure for condensing the secondary refrigerant to a liquid again.

Abstract: A cooling system, including a first refrigeration medium, a first evaporator, a first condenser, and an all-condition cooling tower. The first evaporator is installed in a to-be-cooled space, the first evaporator is connected to the first condenser, an installation position of the first condenser is higher than an installation position of the first evaporator; the first condenser is connected to the all-condition cooling tower, and the all-condition cooling tower is disposed outside the to-be-cooled space, the all-condition cooling tower is used for providing the first condenser with a cold source for cooling the first refrigeration medium in a gaseous state.

Abstract: A test and measurement instrument having a signal generator circuit and a waveform monitor circuit for monitoring a waveform received at a device under test (DUT). The signal generator circuit generates a waveform based on an input from a user, while the waveform monitor circuit sends captured signals to a processor to determine a waveform received at the DUT. The waveform monitor captures a signal at a first test point and a second test point, via a switch, and the processor receives the captured signals and using linear equations determines both an incident waveform and a reflected waveform from the DUT.

Abstract: A mechanism to prevent unauthorized physical use of an electronic device includes a main circuit board, a plurality of light sources, a plurality of sensors, a base, a plurality of optical members, and a magnetic member. The base comprises a base body and a plurality of guiding members. Each optical member comprises a main body and a magnetic portion. The main body of each optical member can change either a direction of propagation of light or a wavelength of light emitted from a light source, or both, and can propagate such light to a sensor which can forward to a control unit electrical signals representing a password input. When the electronic device is detached, the magnetic member attracts the magnetized optical members into random disorder on the cover, thereby destroying the predefined order.

Abstract: A mechanism to prevent unauthorized physical use of an electronic device includes a main circuit board, a plurality of light sources, a plurality of sensors, a base, a plurality of optical members, and a magnetic member. The base comprises a base body and a plurality of guiding members. Each optical member comprises a main body and a magnetic portion. The main body of each optical member can change either a direction of propagation of light or a wavelength of light emitted from a light source, or both, and can propagate such light to a sensor which can forward to a control unit electrical signals representing a password input. When the electronic device is detached, the magnetic member attracts the magnetized optical members into random disorder on the cover, thereby destroying the predefined order.

Abstract: A security inspection apparatus and a security inspection method are disclosed. In one aspect, an example apparatus includes a CT inspection device and a Raman spectrum inspection device, the CT inspection device includes: a CT scanner scanning an object to be inspected to generate a CT image, an image recognizing device recognizing the CT image to check whether or not the object has a suspected hazardous article, and an object marking device making a predetermined marker on the object which has the suspected hazardous article. The Raman spectrum inspection device includes: a Raman spectrum measuring device extracting a Raman spectrum of the suspected hazardous article in the object, a Raman spectrum comparing device comparing the Raman spectrum of the suspected hazardous article with Raman spectra of known compositions to determine a composition of the suspected hazardous article, and an object marker recognizing device recognizing the predetermined marker on the object.

Abstract: The disclosure relates to smart security inspection systems and methods. One illustrative method may comprise distributing, by the system, a security inspection tray to a person to be inspected through an unpacking station and associating/binding information regarding the person to be inspected to a baggage identifier, and identifying the baggage identifier, obtaining the information of the person to be inspected according to the baggage identifier, obtaining pre-stored risk information according to the information of the person to be inspected, performing differentiated security inspections on the person to be inspected and/or baggage according to the risk information, and associating/binding the obtained data to the information of the person to be inspected. Further implementations relate to features such as processing identity information, controlling flow in the baggage handling area(s), imaging baggage, packing the baggage, and finishing the security inspection.

Abstract: A method, server and system for operating on security inspection data is disclosed. In one aspect, an example method performed by a server for operating on security inspection data includes receiving an operation request for target security inspection data from a client through a network. The target security inspection data is loaded from a storage server based on the operation request. Image processing on the loaded target security inspection data is performed. The processed target security inspection data or a graphic interface including the processed target security inspection data is encoded. The encoded target security inspection data or graphic interface is transmitted to the client through the network in a video stream.

Abstract: The present disclosure provides a refrigeration system and refrigeration method for a data center.