The authenticity of public keys in an asymmetric cryptosystem can be gained in two di erent ways: either it is veri ed explicitly after knowing the public key and its certi cate, e.g. X.509 certi cates, or it is veri ed implicitly during the use of the keys. The latter concept has been introduced by Girault 1991 as self-certi ed keys. In this paper we extend this concept: We show how to issue s...

The purpose of the present study was to review systematically, research exploring the relationship between self-concepts and paranoia in psychosis. A literature search was performed by two independent raters in relevant databases (MedLine, PsychInfo and Web of Science) and articles meeting the inclusion criteria were cross-referenced. Following scrutiny according to inclusion criteria, 18 studi...

A comprehensive understanding of human-object interaction (HOI) requires detecting not only a small portion predefined HOI concepts (or categories) but also other reasonable concepts, while current approaches usually fail to explore huge unknown (i.e., combinations verbs and objects). In this paper, 1) we introduce novel challenging task for understanding, which is termed as Concept Discovery; ...