embedded systems are becoming a suggestive target for code injection attacks in recent years. software protection mechanisms in general computers are not usually applicable in embedded systems as they come with limited resources like memory and processor. in this paper we investigate side channel characteristics of embedded systems and their usability in code injection attack detection. the arc...

the photocatalytic coatings were prepared via incorporating the modified titania nanoparticles into epoxy-based inorganic-organic hybrid coatings. titania nanoparticles were first synthesized from tetra-n-butyl titanate using sol-gel methods by two different calcination treatments, i.e., in mild condition (80°c) and 500°c. the formed anatase nanoparticles were further modified as titania-silica...

We consider generic isomorphism invariant queries on rela tional databases embedded in an in nite background structure As sume a generic query is expressible by a rst order formula over the embedded domain that may involve both the relations of the database and the relations and functions of the background structure Then this query is already expressible by a rst order formula involving just an...