Abstract: A backlight and a display device are provided herein, which is related to the field of display technology and intends to improve visual effect of the image displayed by the display device. The backlight may include a back plate, a light guide plate and a light source. The back plate includes an accommodation groove, and the light guide plate includes a holding groove at a first side surface of the light guide plate. The light source includes at least one light emitting element. The holding groove is configured to hold at least a portion of the at least one light emitting element, and the accommodation groove is configured to accommodate the light guide plate and the light source.

Abstract: A power supply system and a control method and control device thereof are provided. The power supply system includes a first power supply device, a heat-dissipation unit, a second power supply device, and a control device. The control device is configured to confirm whether each battery pack in the first power supply device experiences thermal runaway, and control the first power supply device to supply power to the heat-dissipation unit when no battery pack in the first power supply device experiences thermal runaway, so that the heat-dissipation unit dissipates heat from the first power supply device; and control a battery pack not experiencing thermal runaway in the first power supply device and/or the second power supply device to supply power to the heat-dissipation unit when a battery pack in the first power supply device experiences thermal runaway, so that the heat-dissipation unit dissipates heat from the first power supply device.

Abstract: Embodiments of the present disclosure provide a method, an electronic device, and a computer program product that involve exporting a log. The method includes acquiring a first set of attributes indicating a target asset among assets protected by a data protection product, a second set of attributes indicating target tasks executed on the target asset, and a third set of attributes indicating a computing resource running the data protection product. The method further includes determining an export time consumed to export a log of the target asset based on the first set of attributes, the second set of attributes, and the third set of attributes. With the embodiments of the present disclosure, the time required for exporting a log can be accurately estimated while the log is exported.

Abstract: A power supply system and a control method and control device thereof are provided. The power supply system includes a first power supply device, a heat-dissipation unit, a second power supply device, and a control device. The control device is configured to confirm whether each battery pack in the first power supply device experiences thermal runaway, and control the first power supply device to supply power to the heat-dissipation unit when no battery pack in the first power supply device experiences thermal runaway, so that the heat-dissipation unit dissipates heat from the first power supply device; and control a battery pack not experiencing thermal runaway in the first power supply device and/or the second power supply device to supply power to the heat-dissipation unit when a battery pack in the first power supply device experiences thermal runaway, so that the heat-dissipation unit dissipates heat from the first power supply device.

Abstract: The invention disclosure a remotely operated pneumatic manipulator based on Kinect, comprising Kinect sensor, computer, D/A embedded board, PWM piezoelectric pneumatic ratio valve, pneumatic triad, air compressor, artificial muscle, spring and finger joint, wherein the Kinect sensor is provided on one side of the finger joint, a camera module of the Kinect sensor is faced to the finger joint. The pneumatic humanoid manipulator of the invention has basically the same dimensions as human hands, can achieve human-computer interaction and remotely operation, the transmission structure thereof is novel, simple and compact, the fingers thereon are convenient to control and flexible to move, the finger movement range is large for wide application, moreover, the PWM piezoelectric pneumatic ratio valve is with advantages of fast dynamic response, low cost, strong resistance to noise, and high detection accuracy of Kinect sensor.

Abstract: A backlight and a display device are provided herein, which is related to the field of display technology and intends to improve visual effect of the image displayed by the display device. The backlight may include a back plate, a light guide plate and a light source. The back plate includes an accommodation groove, and the light guide plate includes a holding groove at a first side surface of the light guide plate. The light source includes at least one light emitting element. The holding groove is configured to hold at least a portion of the at least one light emitting element, and the accommodation groove is configured to accommodate the light guide plate and the light source.

Abstract: The invention disclosure a remotely operated pneumatic manipulator based on Kinect, comprising Kinect sensor, computer, D/A embedded board, PWM piezoelectric pneumatic ratio valve, pneumatic triad, air compressor, artificial muscle, spring and finger joint, wherein the Kinect sensor is provided on one side of the finger joint, a camera module of the Kinect sensor is faced to the finger joint. The pneumatic humanoid manipulator of the invention has basically the same dimensions as human hands, can achieve human-computer interaction and remotely operation, the transmission structure thereof is novel, simple and compact, the fingers thereon are convenient to control and flexible to move, the finger movement range is large for wide application, moreover, the PWM piezoelectric pneumatic ratio valve is with advantages of fast dynamic response, low cost, strong resistance to noise, and high detection accuracy of Kinect sensor.

Abstract: Systems and methods for impersonation detection and abuse prevention are disclosed. In example embodiments, a batch server of a social networking service receives a new registration or an update for an account, the account comprising a name and identity-related information. The batch server determines that the name and the identity-related information of the account matches one or more other accounts of the social networking service. The batch server detects a suspicious behavior of the account. The batch server limits, in response to the suspicious behavior, access to the account unless or until an identity of a user of the account is verified.

Abstract: The disclosed embodiments provide a system for processing actions with a service. During operation, the system obtains a first attribute associated with a first cluster of entities identified as malicious to a service. Next, the system matches the first attribute to a second attribute of an entity in the first cluster. The system then uses the second attribute to identify a second cluster of entities as malicious to the service. Finally, the system uses cluster scores for identifying the first and second clusters of entities as malicious to the service to output responses to actions associated with entities in the first and second clusters of entities.

Abstract: A sandbox system includes a mixed analysis engine that allows for dynamic and static analysis of a sample process for malware. The sample process is executed in a virtual machine and interrupted to allow the mixed analysis engine to identify functions that are called by malware to perform a malicious behavior. The functions are correlated to identify a behavior node that is indicative of the malicious behavior, and behavior nodes are correlated to identify a behavior net. The behavior net is scored to determine if the sample process is malware.

Abstract: A virtual machine is used to perform a raw scan for evasive malware on a host computer without requiring an interrupt or restart of a host operating system. An antivirus program installs a raw scanner virtual machine. The raw scanner virtual machine is triggered to scan files and memory for malware. The raw scan results are collected by the antivirus program for analysis, such as for use in generating a report or for removal of malware. The memory and files of the host are mapped to a guest space of the virtual machine.

Abstract: The present disclosure discloses an antenna device, which comprises an array antenna and a power divider. The array antenna comprises a plurality of antenna units, and each of the antenna units comprises a conductive sheet engraved with a groove topology pattern, conductive feeding points and a feeder line. The power divider is adapted to divide a baseband signal into a plurality of weighted signals and then transmit the weighted signals to the antenna units arranged in an array via the conductive feeding points respectively. By arraying the antenna units and using the beam forming method, the directionality of the antenna can be designed as needed through phase superposition between the antenna units; and then, a reflective metal plate is provided on the back side of the antenna so that a back lobe of the antenna is compressed. In this way, the miniaturized antenna array can obtain a high directionality.

Abstract: A metamaterial for deflecting an electromagnetic wave is disclosed, which comprises a functional layer. The functional layer comprises a plurality of sheet layers parallel to each other, and each of the sheet layers comprises a sheet-like substrate and a plurality of man-made microstructures arranged in an array on the sheet-like substrate. The sheet-like substrate comprises a plurality of unit blocks, and each of the man-made microstructures and a corresponding one of the unit blocks occupied thereby form a unit cell. Refractive indices of the unit cells arranged in a first direction in each of the sheet layers decrease gradually. Each of the unit cells has an anisotropic electromagnetic parameter. Through use of the metamaterial of the present disclosure, deflection of the electromagnetic wave can be achieved.

Abstract: A computer executes a suspicious software sample directly on its CPU in order to detect if the software sample is malicious. The software sample does not execute within a sandbox or virtual machine. Before the sample executes, a memory state of the computer is saved and a virtual disk file is created to bootstrap the computer at a later time. Malicious behavior of the software sample is collected while it executes and a report is generated. Hard disk access requests are redirected to a virtual disk file. The software sample does not detect that it is being analyzed. After execution of the sample, the computer is reverts to a clean state by bootstrapping the computer from the saved virtual disk file and then restoring the computer's volatile and non-volatile virtual memory from the saved memory state. A new software sample may then be executed and analyzed on the clean computer.

Abstract: During a bootstrapping process, path names of necessary bootstrap modules are collected and stored into a file. When an infected bootstrap component is detected, the method initiates emulation of the bootstrapping process within a virtual machine rather than directly cleaning malware from the infected bootstrap component. A settings file is copied into the virtual machine indicating the necessary bootstrap components in the host computer (including the infected component). Alternatively, the actual components are copied into the virtual machine. A clean version of the infected bootstrap component is made available to the virtual machine. The virtual machine is launched using the bootstrap components (including the clean version of the infected bootstrap component) and it emulates the bootstrapping process of the operating system. A successful bootstrap indicates the infected bootstrap component may be cleaned on the host computer.

Abstract: A metamaterial for deflecting an electromagnetic wave is disclosed, which comprises a functional layer. The functional layer comprises a plurality of sheet layers parallel to each other, and each of the sheet layers comprises a sheet-like substrate and a plurality of man-made microstructures arranged in an array on the sheet-like substrate. The sheet-like substrate comprises a plurality of unit blocks, and each of the man-made microstructures and a corresponding one of the unit blocks occupied thereby form a unit cell. Refractive indices of the unit cells arranged in a first direction in each of the sheet layers decrease gradually. Each of the unit cells has an anisotropic electromagnetic parameter. Through use of the metamaterial of the present disclosure, deflection of the electromagnetic wave can be achieved.

Abstract: The present disclosure discloses an antenna device, which comprises an array antenna and a power divider. The array antenna comprises a plurality of antenna units, and each of the antenna units comprises a conductive sheet engraved with a groove topology pattern, conductive feeding points and a feeder line. The power divider is adapted to divide a baseband signal into a plurality of weighted signals and then transmit the weighted signals to the antenna units arranged in an array via the conductive feeding points respectively. By arraying the antenna units and using the beam forming method, the directionality of the antenna can be designed as needed through phase superposition between the antenna units; and then, a reflective metal plate is provided on the back side of the antenna so that a back lobe of the antenna is compressed. In this way, the miniaturized antenna array can obtain a high directionality.