Abstract: The present invention relates to perform presence service in a wireless communication system that is available to a mobile device.

Abstract: The present invention relates to perform presence service in a wireless communication system that is available to a mobile device.

Abstract: The present invention relates to perform presence service in a wireless communication system that is available to a mobile device.

Abstract: The present invention relates to perform presence service in a wireless communication system that is available to a mobile device.

Abstract: An environment difference detector includes an elastic surface wave element equipped with a substrate including a surface having an annular surface acoustic wave circulating path, a surface acoustic wave exciting/receiving unit exciting a surface acoustic wave along the circular path and receiving the circulated surface acoustic wave, and a sensitive film disposed on the circular path to change an elastic nature in accordance with a change in an adjacent environment, a speed/intensity measuring unit measuring a circulating speed and intensity of the surface acoustic wave from an electric signal generated by the unit when the unit receives the circulating surface acoustic wave, and an environment evaluation unit evaluating an environment adjacent to the sensitive film from at least one of the circulating speed and the intensity measured by the unit.

Abstract: A method for transmitting location information includes the steps of: a) receiving a start message including MO (mobile originated location request) mode information from a first terminal; b) calculating location information of the first terminal; and c) transmitting the calculated first terminal's location information according to the MO (mobile originated location request) mode information. A method for transmitting location information in a Secure User Plane Location (SUPL) protocol of a first SUPL Enabled Terminal (SET), a SUPL Location Platform (SLP), and a second SUPL Enabled Terminal (SET) includes the steps of: a) receiving a start message including MO (mobile originated location request) mode information from the first SET; b) calculating location information of the first SET; and c) transmitting the calculated first SET's location information to any one of the first SET and the second SET according to the MO (mobile originated location request) mode information.

Abstract: A wear-resist mechanical component used in a frictional contact area requiring wear-resistance and a method of producing the same is provided. The method comprises the steps of: depositing hard particles of one or more substances selected from the group consisting of carbides, nitrides and borides on an iron-based metal body to a predetermined thickness; depositing binder powders atop of the hard particle layer to a predetermined thickness; and heating the hard particles, the binder powders and the iron-based metal body, so that the iron-base metal body and the hard particles are bonded together. This can obtain a wear-resistant mechanical component having high hardness and excellent wear resistance without having to go through the step of mixing hard particles with binder to form the mixture. The super-hard alloy can be bonded to the base metal body regardless of the shape of the base metal body.