Based on the analysis of a mass of datasets extracted from published papers, we studied the statistical feature of the percentage of soil fertility contribution(PSFC)to grain crop yield and established the quantitative relationship of PSFC against soil properties and geographical locations in mainland China.

A geographical location-based scheme to detect Sybil attacks was proposed.

A geographical location based routing protocol is presented to augment TCP performance in high mobility wireless ad-hoc networks.

According to the complexity in site selection of airport,which involves wide range,in this paper from geographical position,clearance,environmental protection,property right and other aspects discussion and thoughts are made on the site selection of airport in order to realize reasonable selection of site to meet requirements of strategy and transportation.

First the geographical position mathematical model and exact calculation formula were built.

This paper presents a novel distributed MAC address assignment algorithm(Virtual Grid Spatial Reusing-VGSR) for wireless sensor networks,which reduces the size of the MAC address efficiently based on both the spatial reuse of MAC address and the mapping of the geographical position.