Abstract: Aspects of the disclosure are directed to a method for use on a blockchain network that includes an accounting node subnetwork having accounting nodes configured to record a data block onto a blockchain and a service node having service nodes configured to verify data blocks recorded by the accounting nodes onto the blockchain. The method can include generating a signature based on transaction information to be included in a data block to be added onto the blockchain by using a key specific to the accounting node. The method can further include adding the transaction information and the generated signature to the data block and adding the data block onto the blockchain, and transmitting the signature to the service nodes in the service node subnetwork, so that the service nodes perform signature verification on the signature based on the key specific to the accounting node.

Abstract: A system for predicting a surge of a centrifugal refrigeration compressor including a signal capturing module for capturing at least two signals relevant to the centrifugal refrigeration compressor; a feature extracting module defining a window period for extracting data of the at least two signals, and defining at least two feature functions respectively acting on the data in the window period of the at least two signals; and, a feature analyzing and deducing module calculating a feature value for each of the signals to map a probability value of surge prediction for each of the signals, and concluding, based on the probability value of the surge prediction of each of the signals, a final probability value to determine whether or not the surge will occur to the centrifugal refrigeration compressor.

Abstract: The present invention relates to a method and a system of commissioning elevator, and an elevator system. The method includes obtaining at least one operation data of at least one elevator door, comparing the operation data with corresponding criterion operation data, and determining whether a deviation between the operation data and the criterion operation data exceeds a pre-set range, and if so, triggering a control over at least one control end relevant to the operation of the elevator door to make a deviation between the operation data re-obtained and the criterion operation data fall within the pre-set range. The invention will increase the efficiency in elevator commissioning and remove the adverse effects on elevator operation caused by factors such as “Stack Effect”, and thereby ensure good working condition and high security of elevators.

Abstract: A game controller with a displacement detection device comprises a controller and a displacement detection device. The displacement detection device further defines a detection channel. The displacement detection device comprises a detection module and an operating element, wherein the detection module detects the displacement of the operating element in the detection channel to control the movement of a control target.

Abstract: The present disclosure provides an organic electronic material containing a nitrogen heterocycle and a preparation method and use thereof, and relates to the technical field of organic electroluminescence. Nitrogen-containing heterocycles such as pyridine, triazine or pyrimidine are introduced into a main structure of phenanthrene, such that the electronegativity of the material is enhanced, and the electron transport performance and the thermal stability of a compound are improved. The organic electron transport material provided by the present disclosure has a relatively good thermal stability, a high luminous efficiency and a high luminous purity. An organic light-emitting device prepared from the organic electronic material has effects of reducing a driving voltage, improving a luminous efficiency, enabling color purity to be excellent and prolonging a service life.

Abstract: A method is provided for a hyper-converged storage-compute system to implement an active-active failover architecture for providing Internet Small Computer System Interface (iSCSI) target service. The method intelligently selects multiple hosts to become storage nodes that process iSCSI input/output (I/O) for a target. The method further enables iSCSI persistent reservation (PR) to handle iSCSI I/Os from multiple initiators.

Abstract: Provided are a method and apparatus for turning on a screen, a mobile terminal and a storage medium. The method comprises that: when a change in a moving state of a mobile terminal meets a preset unlocking condition, a structured light image sensor is activated for imaging; a depth map obtained by the imaging of the structured light image sensor is acquired; a face depth model is constructed according to the depth map; a position of pupils is identified from the face depth model; and when the position of the pupils is within a specified region of eyes, the screen of the mobile terminal is controlled to turn on.

Abstract: Disclosed in embodiments of the present disclosure is a system for controlling a laser projector, a laser projector assembly, a terminal, a method for controlling a laser projector, a method for controlling a laser light output, a device for controlling a laser light output and a computer readable storage medium. The system includes a first drive circuit coupled to the laser projector. The first drive circuit is configured to output an electrical signal to drive the laser projector to project laser light and to turn off the laser projector when a duration of outputting the electrical signal is greater than or equal to a preset threshold.

Abstract: One example method to perform object-based load balancing in a distributed storage system of a virtualization system supported by a cluster of host machines may include determining, by a first host machine in the cluster, whether any host machine in the cluster has affinity to a site. The method may also include determining, by the first host machine, whether to distribute affinity Internet small computer system interface (iSCSI) targets owned by the first host machine to at least the second machine based on a first balance objective associated with the site, and after having considered the first balance objective, determining, by the first host machine, whether to distribute iSCSI targets without affinity owned by the first host machine to other host machines in the cluster based on a second balance objective associated with the cluster.

Abstract: One example method to support Internet small computer system interface (iSCSI) services in a distributed storage system of a virtualization system may include receiving a notification of a change event associated with a global virtual Internet Protocol (VIP) object, wherein the global VIP object is associated with a virtual IP address for the iSCSI services. The method may also include in response to a first determination that the first host machine does not own the global VIP object and in response to a second determination that the first host machine gains ownership of the global VIP object based on the notification, locking the global VIP object and binding the virtual IP address to the first host machine.

Abstract: A method and device for face identification, and a mobile terminal and a storage medium are provided. The method includes: (101) an image sensor is controlled to perform imaging; (102) imaging data obtained by the image sensor through the imaging is acquired; and (103) liveness detection is performed on an imaging object based on the imaging data.

Abstract: The present disclosure discloses a building evacuation system and a building evacuation method. The evacuation method comprises: capturing image data of a region by a plurality of sensors to track a moving state of people in the region; detecting, in the moving state of the people being tracked, an object specified by at least one set abnormal mode, and matching the object with the abnormal mode; and generating an indication representing an abnormality of evacuation behavior based on the abnormal mode after being matched. The present disclosure can provide efficient evacuation.

Abstract: Certain Embodiments described herein relate to configuring the network-storage stack of two devices (e.g., physical or virtual) communicating together (e.g., an initiator and a target, as defined below) with Internet Small Computer Systems Interface (iSCSI) extension for remote direct memory access (RDMA) iSER, which is a protocol designed to utilize RDMA to accelerate iSCSI data transfer. The iSER protocol is implemented as an iSER datamover layer that acts as an interface between an iSCSI layer and an RDMA layer of the network-storage stacks of the two devices. Using iSER in conjunction with RDMA allows for bypassing the existing traditional network protocol layers (e.g., TCP/IP protocol layers) of the devices and permits data to be transferred directly, between the two devices, using certain memory buffers, thereby avoiding memory copies taking place when the existing network protocol layers are used.

Abstract: A method and an apparatus for processing data, and a non-transitory computer readable storage medium. The method includes: obtaining a face recognition model stored in a first operation environment; performing an initialization on the face recognition model in the first operation environment, and transmitting the face recognition model subjected to the initialization to a second operation environment for storing, in which, a storage space in the first operation environment is greater than a storage space in the second operation environment.

Abstract: An example method for diagnosing an input/output (I/O) issue associated with an object owned by the first host in a vSAN cluster is disclosed. The method includes identifying a first component and a second component of the object. In response to the first component being locally stored on the first host, the methods include collecting a first set of I/O aggregated statistic information. In response to the second component being remotely stored on the second host, the methods include issuing a command to the second host, obtaining a second set of I/O aggregated statistic information from the second host and network metrics associated with the first host and the second host. The methods include diagnosing the I/O issue associated with the object based on the first and second sets of I/O aggregated statistic information and the network metrics.

Abstract: The present disclosure provides a detection method of a projector, a projector, and an electronic device. The method includes: obtaining a speckle pattern, the speckle pattern being an image generated by irradiating laser light generated by a light source in the projector onto an object by an optical element; and performing an abnormality detection on the projector according to the speckle pattern.

Abstract: The present disclosure provides a control method of a camera module, a control device, a terminal, a nonvolatile computer readable storage medium and a computer device. The control method includes: obtaining a projection distance between a target user and the camera module; determining a control parameter of the camera module according to the projection distance and controlling the camera module based on the control parameter.

Abstract: Disclosed are an image information processing method, an electronic device and a storage medium. The method includes: acquiring a color gamut space configured for an interface to be displayed; acquiring a color gamut space of a screen; if the color gamut space configured for the interface to be displayed is inconsistent with the color gamut space of the screen, detecting whether a color gamut space conversion condition is satisfied; and if the color gamut space conversion condition is satisfied, converting the color gamut space of the screen to be consistent with the color gamut space configured for the interface to be displayed.

Abstract: A display method includes: obtaining a first layer comprising an interface layer of a video playback interface and a multimedia layer corresponding to a video used for being played in the video playback interface; obtaining a second layer by calling a graphics processor to synthesize the interface layer; obtaining a target image by calling a multimedia display processor to synthesize the multimedia layer and the second layer; and displaying the target image on the video playback interface. The present disclosure calls different processors to synthesize the layer to be synthesized. Power consumption of superimposing multiple layers can be saved, and a layer synthesis speed can be increased. Accordingly, an image synthesis method is more reasonable. An electronic device and a non-transitory computer-readable storage medium are also provided.

Abstract: An image processing method, an apparatus, a non-transitory computer readable storage medium and an electronic device are disclosed. The method includes: acquiring an accuracy level of a target application in response to an image collecting instruction initiated by the target application; adjusting an accuracy of an image to be sent according to the accuracy level, and obtaining a target image; and sending the target image to the target application.