This paper proposes a concept of all phase data space,and based on the DFT/IDFT filtering brings about a new type of zero-phase filter,the all phase DFT (APDFT) digital filter.

Synthetic assessment of ecoenvironment in the arid inland basin based on multisource spatial data—a case study on Ganzhou District of Zhangye City;

Research status about spatial data fusion and its problem analysis;

The Discussion on some Problems about Spatial Data Sharing;

Research of urban traffic planning on space data warehouse;

A Preliminary Exploration to Forestry GIS Space Data Quality and Error;

Design and implementation of space database in GIS of water-supply pipeline network;

In large data space, data process is simplified by using cosine similarity and some special vectors are got, these vectors are response to the changing of elements, by which the vectors are composed.

A group of detecting data in an experiment is taken as a set of coordinate of a vector in data space.

Traditional orgnization of compiling data space is analysed,which indicates it is the nature factor that buffer overflow attack can often threaten software runtime secruity.

Grid data management based on dataspace;

This paper introduces the concept and characters of dataspace,and presents a framework for dataspace integration and management system.

Also dataspace has to integrate the data in pay-as-you-go fashion.