Abstract: A variable valve actuation device for an engine includes a rocker arm mechanism, a camshaft, an actuation mechanism and a blocking mechanism. The rocker arm roller can slide on a roller shaft so as to have two operating positions, a first cam and a second cam which are adjacent are provided on the camshaft, the rocker arm mechanism is actuated, based on the different operating positions of the rocker arm roller, by the first cam or the second cam, respectively, to enable the engine to have two valve lifts, a control cam is further provided on one side of the first cam or the second cam, the control cam can actuate the blocking mechanism, and the rocker arm roller is blocked from switching in a switching prohibited portion of the first cam and the second cam, and is allowed to switching in a non-switching prohibited portion.

Abstract: A variable valve actuation device for an engine includes a rocker arm mechanism, a camshaft, an actuation mechanism and a blocking mechanism. The rocker arm roller can slide on a roller shaft so as to have two operating positions, a first cam and a second cam which are adjacent are provided on the camshaft, the rocker arm mechanism is actuated, based on the different operating positions of the rocker arm roller, by the first cam or the second cam, respectively, to enable the engine to have two valve lifts, a control cam is further provided on one side of the first cam or the second cam, the control cam can actuate the blocking mechanism, and the rocker arm roller is blocked from switching in a switching prohibited portion of the first cam and the second cam, and is allowed to switching in a non-switching prohibited portion.

Abstract: An information providing method and system may provide information while conversing with a user through an instant messaging application. The information providing system enables a user terminal to add, as a friend, a software bot which may be a virtual friend configured in an artificial software program through the instant messaging application executed in a user terminal. When the user inputs and transmits a message to the software bot through a conversation session, the information providing system may retrieve an appropriate response corresponding to the message from a database by inputting the message as a query, and may transmit the response to the user terminal, thereby providing the response to the user through the conversation session.

Abstract: A method that uses a processor to provide information, the method includes establishing a conversation session between a terminal and a software bot through an instant messaging application executed in the terminal for an instant messaging service; displaying a map on a screen of the terminal; transmitting a request to the software bot through the conversation session for querying information associated with at least one point selected in the map on the screen of the terminal by an user of the terminal or a region corresponding to the at least one point; receiving the information associated with the at least one point or the region from the software bot through the conversation session; and displaying the received information the screen of the terminal.

Abstract: A method for providing an interpretation service using a messaging application includes receiving a message of a first language in a conversation session provided by the messaging application in a terminal; translating the message of the first language into a message of a second language; and providing the message of the second language in the conversation session. A system to provide a messaging service through a messaging application includes an access manager to manage access of a terminal over a network, and to receive a message of a first language through a conversation session provided by the messaging application; and a processor to translate the message of the first language into a message of a second language, in which the access manager transmits the message of the second language to the terminal over the network to display the message of the second language in the conversation session.

Abstract: An information providing method and system that may provide information while conversing with a user through an instant messaging application is disclosed. The information providing system enables a user terminal to add, as a friend, a software bot which may be a virtual friend configured in an artificial software program through the instant messaging application executed in a user terminal. When the user inputs and transmits a message to the software bot through a conversation session, the information providing system may retrieve an appropriate response corresponding to the message from a database by inputting the message as a query, and may transmit the response to the user terminal, thereby providing the response to the user through the conversation session.