This paper introduces MapObjects component and describes the method of developing GIS of Peking Mountainous Area with VB language and MapObjects component.
The thesis is one important component of fifteenth project— research anddemonstration on the key problem of supervision, pre-warning and decision-makingassistance supported system of geology disaster in the Three Gorges of Yangtse Rive(2001BA604A02).
"Digital city", however, is an important component of "digital earth", as it is a specific materialization of "digital earth" in a city, a strategic target of urban informationization and an important logo of urban modernization.
At the same time, the analysis, study and application of spatial data of WebGIS have become the key component within the WebGIS system structure technology.
Finally the cubic surfaces of each component ofQ are studied in details by determining their stabilizers, their rational representations and whether they can be expressed as the determinant of a 3×3 matrix of linear forms.
This underlying group H1(X, T \bar{X}) can be described as a generalized Prym variety, whose connected component is either an abelian variety or a degenerate abelian variety.