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Knowledge of positions of sensor nodes in Wireless Sensor Networks (WSNs) will make possible many applications such as asset monitoring, object tracking and routing. In WSNs, the errors may happen in the measurement of distances and angles between pairs of nodes in WSN and these errors will be propagated to different nodes, the estimation of positions of sensor nodes can be difficult and have huge errors. In this paper, we will propose localization algorithm based on both distance and angle to landmark. So, we introduce a method of incident angle to landmark and the algorithm to exchange physical data such as distances and incident angles and update the position of a node by utilizing multiple landmarks and multiple paths to landmarks.

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In this paper, the WIPI-to-iOS automatic mobile game converter was designed to automatically translate mobile game contents from the WIPI platform to the iOS platform for smart phones. Through the WIPI-to-iOS converter, resources such as images and sounds can be converted, APIs can be converted using a platform mapping engine with wrapper functions. These and all other content conversion functions were examined. Test results indicate that the graphics, image output, sound output, and other functions of converted iOS platform games were equivalent to those of the WIPI platform games before conversion.