Abstract: Disclosed are a method of determining properties of a service executed in a user terminal based on packet analysis, and a user terminal and a computer program that perform the same. The method of determining properties of a service executed in a user terminal based on packet analysis according to various embodiments of the present invention is performed by the user terminal, which includes identifying an analysis target packet among packets generated as a service is executed through the user terminal, and determining the properties of the service by analyzing the identified analysis target packet.

Abstract: A method for operation of a user terminal, according to an embodiment of the present invention, comprises the steps of: registering a first address as DNS server information in a virtual private network (VPN) module; driving an application interworking with a target service server; acquiring domain name server (DNS) lookup request result information corresponding to the target service server by using the DNS server information; generating access domain information from the domain name server (DNS) lookup request result information; and outputting, on the basis of the access domain information, related useful information, such as user payment means-specific benefit notification corresponding to the application.

Abstract: Disclosed is an information providing method of an electronic apparatus. The information providing method includes identifying identification information of at least one item included in a set of items, and, based on the identification information of the at least one item, providing at least one of information associated with the packing material and information associated with the coolant, each information associated with the at least one item.

Abstract: Disclosed is an information providing method of an electronic apparatus. The information providing method includes identifying identification information of at least one item included in a set of items, and, based on the identification information of the at least one item, providing at least one of information associated with the packing material and information associated with the coolant, each information associated with the at least one item.

Abstract: The present invention relates to a column unit which connects a chair sheet to a base in which a wheel is installed. The present invention provides a column unit which comprises a base tube having a lower end portion vertically fixed to a base of a chair and having the hollow interior; a spindle having the interior filled with a pressure gas and divided to upper and lower chambers by a piston, an upper end portion of a piston rod being connected to the piston, a lower end portion of the piston rod being rotatably installed at the lower end portion of the inner side of the base tube, the upper and lower chambers are communicated by a bypass, a valve being installed at the bypass; and a guide sleeve installed between the base tube and the spindle and engaged with the spindle to be integrally moved upward and downward together with the spindle.

Abstract: The present invention relates to a column unit which connects a chair sheet to a base in which a wheel is installed. The present invention provides a column unit which comprises a base tube having a lower end portion vertically fixed to a base of a chair and having the hollow interior; a spindle having the interior filled with a pressure gas and divided to upper and lower chambers by a piston, an upper end portion of a piston rod being connected to the piston, a lower end portion of the piston rod being rotatably installed at the lower end portion of the inner side of the base tube, the upper and lower chambers are communicated by a bypass, a valve being installed at the bypass; and a guide sleeve installed between the base tube and the spindle and engaged with the spindle to be integrally moved upward and downward together with the spindle.