Abstract: A method for preparing a silicon anode active material in which a nano-silicon mixture is inserted into pores of coffee grounds according to the present disclosure can contribute to the protection of the natural environment through the preparation of a high-capacity silicon anode active material for a lithium secondary battery, which is prepared using coffee grounds that are an environmental pollutant, and has an effect of lowering the preparation cost of a lithium secondary battery anode material with the high-capacity silicon anode active material using coffee grounds by including the steps of: a) preparing nano-silicon; b) preparing an anionic surfactant; c) preparing silane; d) preparing a mixed dispersion based on ultrapure distilled water; e) drying and preparing coffee grounds; f) mixing polyvinyl alcohol into a mixed dispersion; g) mixing polyamic acid into the mixed dispersion; h) mixing graphite into the mixed dispersion; i) mixing vegetable oil into the mixed dispersion; j) final mixed dispersion h

Abstract: According to an aspect, a method is performed by a first controller for providing security for second controllers in an in-vehicle network. An inherent information request is transmitted to a suspicious controller of the plurality of second controllers for an inherent information of the suspicious controller. The inherent information request includes a certificate assigned to the first controller. An encrypted inherent information of the suspicious controller is received from the suspicious controller and a decrypted inherent information is compared with a pre-stored inherent information. The suspicious controller is determined to be an anomalous controller when the decrypted inherent information is different from the pre-stored inherent information. In response to receiving an update request from a backend server for a specified controller out of the plurality of second controllers, the inherent information request including the certificate assigned is transmitted to the specified controller.

Abstract: According to an aspect, a method is performed by a first controller for providing security for second controllers in an in-vehicle network. An inherent information request is transmitted to a suspicious controller of the plurality of second controllers for an inherent information of the suspicious controller. The inherent information request includes a certificate assigned to the first controller. An encrypted inherent information of the suspicious controller is received from the suspicious controller and a decrypted inherent information is compared with a pre-stored inherent information. The suspicious controller is determined to be an anomalous controller when the decrypted inherent information is different from the pre-stored inherent information. In response to receiving an update request from a backend server for a specified controller out of the plurality of second controllers, the inherent information request including the certificate assigned is transmitted to the specified controller.

Abstract: According to an aspect, a method performed by a first controller for providing security for multiple second controllers in an in-vehicle network, includes transmitting an inherent information request to a suspicious controller of the second controllers for inherent information of the suspicious controller, the inherent information request including a certificate assigned to the first controller, and receiving an encrypted inherent information of the suspicious controller from the suspicious controller, the encrypted inherent information having been encrypted with a public key associated with the certificate, and using a private key associated with the certificate for obtaining decrypted inherent information from the encrypted inherent information, and comparing the decrypted inherent information with pre-stored inherent information, and determining the suspicious controller to be an anomalous controller when the decrypted inherent information is different from the pre-stored inherent information.

Abstract: According to an aspect, a method performed by a first controller for providing security for multiple second controllers in an in-vehicle network, includes transmitting an inherent information request to a suspicious controller of the second controllers for inherent information of the suspicious controller, the inherent information request including a certificate assigned to the first controller, and receiving an encrypted inherent information of the suspicious controller from the suspicious controller, the encrypted inherent information having been encrypted with a public key associated with the certificate, and using a private key associated with the certificate for obtaining decrypted inherent information from the encrypted inherent information, and comparing the decrypted inherent information with pre-stored inherent information, and determining the suspicious controller to be an anomalous controller when the decrypted inherent information is different from the pre-stored inherent information.

Abstract: Disclosed are a home appliance and a control method for the same. The home appliance includes an operation unit that receives a control command, a sensor unit that detects a status of the home appliance, a control unit that outputs a control signal so that the home appliance is operated according to the control command, and a driving unit that is operated according to the control signal. Here, the control unit manages a usage log by accumulating and recording at least one of information of an input of the control command and information of the status of the home appliance.