The nascent uptick in home sales hasn't yet translated to a restarting of construction, a driver of jobs and economic activity; the supply of empty homes that built up during the boom remains large.

These asphalts are used in the construction of built-up roof coverings, the coating of underground transmission pipes and other applications.

The paper introduces its general construction, the process of obtaining data and the realization of whole system with the emphases on the built-up of a knowledge base and its explanation strategy.