In this paper it is proved that a subproduct radical class of l groups is uniquely determined by the corresponding subproduct radical mapping, and that the product of two subproduct radical classes is also a subproduct radical class.

This paper discusses the problems when dealing with VC graph system which includes the usage of several mapping modes,the setting of device coordinates and logical coordinates,the transformation between two coordinates system,and gives the application in laser engraving system.

Eight coordinate mapping modes in Visual C + + can not satisfy the direct indication of the Surveying and mapping coordinate vector graphics system,and there is a need for corresponding transformation.

Query decomposition and optimization based on schema mapping tree in multidatabase systems;

This paper consisted mainly of design of essential module,the concepts of global schema and schema mapping and definition of a mulitdatabase lan-guage SMSQL,which is schema mapping SQL,supports the definition or modificaition of the global schema and also resolves the potentia.

This paper proposes a model called mapping & correlation (Macor) to represent nested schema mappings.

A mapping schema between service level agreement(SLA) based on service-oriented archiecture and resource metrics based on traditional management architectures and a SLA-Driven management model with active agent are proposed.

From the perspective of Situation Semantics and corpus, the paper first attempts to investigate the mapping patterns between the semantics and syntax of the predicate-object construction with"chi"in its conceptual meaning as the predicate in modern Chinese and then make some interpretations of the different patterns.