Abstract: The present invention provides: a method for preparing a petcoke-based artificial graphite negative electrode material for a lithium secondary battery, in which low-grade petcoke is used as a raw material, and artificial graphite having a high degree of graphitization is prepared through leaching and acid treatment of pulverized/classified low-grade petcoke in an acidic solution, followed by carbonization and graphitization; an artificial graphite negative electrode material for a lithium secondary battery, prepared thereby; and a lithium secondary battery.

Abstract: A method for generating a key stream according to an embodiment includes generating r round keys that are each N-dimensional integer vectors including elements of an integer set defined based on a prime number t, based on a random bit string, an encryption counter, and a secret key that is an N-dimensional integer vector consisting of elements of the integer set , generating a first round output vector x1 by performing a modular addition operation on an initial vector and a first round key RK1 of the r round keys with the prime number t as a modulus, and generating a key stream that is an N-dimensional integer vector consisting of elements of the integer set from the first round output vector x1 by using a second to r-th round keys of the r round keys, and one or more first round functions and a second round function.

Abstract: Provided is a method for recording a task including: recording a task using robotic process automation (RPA) solution; sequentially obtaining each event included in an event sequence generated as a result of the recording, wherein the event sequence includes information about a type of user manipulation, information about a target object position, and information about a target object type; correcting the target object type of the obtained event using the target object position of the obtained event; reproducing the obtained event using the target object position of the obtained event and a corrected target object type of the obtained event; and repeating the obtaining, the correcting, and the reproducing until an event included in the event sequence is exhausted.

Abstract: A robotic process automation (RPA) bot execution optimization method is provided. The method includes installing an RPA agent and a default RPA engine on the computing system in a process of installing an RPA solution; acquiring, by the installed RPA agent, an execution request for an RPA bot; determining, by the installed RPA agent, a representative version of an RPA scenario for the RPA bot; preparing, by the installed RPA agent, an optimal RPA engine version for executing the RPA scenario representative version; and controlling, by the installed RPA agent, the prepared optimal RPA engine version to execute the RPA scenario.

Abstract: A provenance information based trust evaluation method of a trust evaluation apparatus for selecting a cooperation object of a self-adaptive system includes transmitting a cooperation request signal to a communicable neighbor, receiving a response including provenance information from the neighbor, evaluating a final trust based on the provenance information included in the response of each cooperation candidate object by considering a neighbor which transmits the response as a cooperation candidate object, and selecting a cooperation object based on the final trust of each of the cooperation candidate object, and the final trust is calculated based on a provenance trust of each of the cooperation candidate objects and the influence of the cooperation pattern.

Abstract: Provided are a method for manufacturing a high yield and high performance mesophase pitch and a high yield and high performance mesophase pitch manufactured therefrom by hydrogenating, mesophase formation, thin film evaporation, solvent-extracting, filtering and then drying to obtain only mesogen components in flow-domained mesophase pitch and then mixing the mesogen components with an isotropic pitch as a solvent component. Further, the high yield mesophase pitch of the present disclosure exhibits high spinnability while maintaining whole anisotropy and exhibits a much higher production yield than existing mesophase pitches.