title: The approach to engineering tasks composition on knowledge portals
abstract: The paper presents an approach to engineering tasks composition on engineering knowledge portals. The specific features of engineering tasks are highlighted, their analysis makes the basis for partial engineering tasks integration. The formal algebraic system for engineering tasks composition is proposed, allowing to set the context-independent formal structures for engineering tasks elements’ description. The method of engineering tasks composition is developed that allows to integrate partial 
journal: Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE