Abstract: The present disclosure relates to a device control method, system and apparatus, a server, and a medium. According to the present disclosure, in response to a recording plan creation instruction, a recording plan that includes at least a device identifier of a video device for video recording is generated, and the generated recording plan is stored. Since the device identifier of the video device is globally unique, in a case where recording conditions of a stored target recording plan are met, a second server is controlled to interact with a target video device indicated by a device identifier in the target recording plan and perform video recording through a target port in the target video device, thereby making it more convenient and flexible to control the video device to perform recording.

Abstract: The present disclosure relates to a device control method, system and apparatus, a server, and a medium. According to the present disclosure, in response to a recording plan creation instruction, a recording plan that includes at least a device identifier of a video device for video recording is generated, and the generated recording plan is stored. Since the device identifier of the video device is globally unique, in a case where recording conditions of a stored target recording plan are met, a second server is controlled to interact with a target video device indicated by a device identifier in the target recording plan and perform video recording through a target port in the target video device, thereby making it more convenient and flexible to control the video device to perform recording.

Abstract: A method of recommending an object, an electronic device, and a storage medium are provided. The method includes: determining, in response to receiving target user behavior data of a target user from a target client, a target object according to the target user behavior data and at least one candidate user behavior data corresponding to a plurality of candidate users; and sending the target object to the target client, so as to recommend the target object to the target user, where each of the candidate user behavior data is stored in a predetermined block chain, each of the candidate user behavior data corresponds to at least one of a plurality of block chain nodes contained in a block chain network, and each of the candidate user behavior data indicates a preference of a candidate user for at least one candidate object.

Abstract: A method for displaying event information, includes: determining an event category and event information of an event to be displayed; determining a target template in a template library according to the event category, wherein the template library includes reference templates corresponding to multiple event categories; generating, based on the event information, a picture corresponding to the event to be displayed by using the target template; and, displaying the picture on an electronic signage corresponding to the event to be displayed.

Abstract: A test script is divided into tests having a sequential order within the test script. An analysis tree of the tests can be generated. Each unique path through the analysis tree includes a subset of the tests as sequentially ordered within the test script. A maximally parallel subset of the unique paths that covers all the tests and according to which the tests are successfully executable is identified. Each test appears in only one unique path of the maximally parallel subset.

Abstract: A test script is divided into tests having a sequential order within the test script. An analysis tree of the tests can be generated. Each unique path through the analysis tree includes a subset of the tests as sequentially ordered within the test script. A maximally parallel subset of the unique paths that covers all the tests and according to which the tests are successfully executable is identified. Each test appears in only one unique path of the maximally parallel subset.

Abstract: Provided are methods for preparing a nickel-cobalt-aluminum precursor material and a cathode material with a gradient distribution of aluminum element. The precursor material and the cathode material based on the precursor material prepared by the methods are of sphere or sphere-like shapes in which the distribution of the aluminum element is changed in a gradient manner, and the particle size distribution is uniform. The synthesized material has a high tap density, is not sensitive to ambient carbon dioxide and moisture, and has a good processability, a high specific capacity and a good stability property.

Abstract: Provided are methods for preparing a nickel-cobalt-aluminum precursor material and a cathode material with a gradient distribution of aluminum element. The precursor material and the cathode material based on the precursor material prepared by the methods are of sphere or sphere-like shapes in which the distribution of the aluminum element is changed in a gradient manner, and the particle size distribution is uniform. The synthesized material has a high tap density, is not sensitive to ambient carbon dioxide and moisture, and has a good processability, a high specific capacity and a good stability property.