Location-Based Services (LBSs) build upon geographic information to provide users with locationdependent functionalities. In such a context, it is particularly important that geographic locations claimed by users are the actual ones. Verification approaches proposed in the last few years are not satisfactory, as they depend on a centralized infrastructure that entails a high risk to the privacy...

This article describes the statistical development of the geographic coding system used to identify worker location for the Continuous Work History Sample. The new system--which is planned for implementation for data year 1993--will provide more accurate geographic distributions of workers within a residence concept than the old system could provide within an employer location concept. The arti...

The paper analyses the impact of geographic innovation on Total Factor Productivity (TFP) in Taiwan in 2001 using 242 four-digit standard industrial classification (SIC) industries. We compute TFP by estimating Translog production functions with K, L, E and M inputs, and measure the geographic innovative activity using both Krugman's Gini coefficients and the location Herfindahl index. We also ...

This paper proposes a method to infer bloggers’ residential areas. Identifying bloggers’ residential areas will be useful as another axis to retrieve weblogs or for tasks that resolve ambiguous objects in terms of geographic contexts. Our method focuses on the local context of geographic location terms and uses binary classifiers to decide whether the context is indicating the writer’s resident...

In this section we provide the form of the projection functions Pv(`, c) that convert from geographic locations to pixel locations in aerial view and street view images. We give the form of the inverse function P−1 v (`′, c) that converts from pixel locations to geographic coordinates. Aerial images: Aerial view imagery in Google maps is represented using a Web Mercator projection, a type of cy...

sink location is considered as a basic service in geographic routing in wireless sensor networks. obtaining the location of sink node by source node using an efficient method with low complexity has always been a challenging issue in research. in this paper, a sink location algorithm based on fano plane is proposed. the research challenge is how to ensure the intersection of two slq and sla rou...