In this paper we describe the person authentification system SESAM. Person identification and verification still is a very difficult task. Using one biometric feature, i. e. the photograph or the sound of the voice, leads to good results, but there is no reliable way to verify the classification. In order to reach robust identification and verification we are combining three different biometric cues. These cues are dynamic, i. e. the sound of the voice and the lip motion, and static, i. e. the fixed image of the face. Each branch is preprocessed and classified separately and the results are combined, e. g. in a 2-from-3 manner. The recognition of persons may be used for pure identification or can be varied to a verification system. For both cases we have done a field test to show that this approach leads to a reliable person authentification system
Scalability to large, heterogeneous, and distributed environments is an important requirement for workflow management systems (WfMS). As a consequence, the management of the configuration of a WfMS installation becomes a key issue. This paper proposes an approach for managing the configuration of WfMS together with an assignment strategy for workflow instances. Separating the Iogical issues of the workflow model from the physical configuration of a WfMS is the basis of our strategy. A formalization of physical organizational requirements in a WfMS configuration covering access rights, usage policies, and costs for the access to WfMS servers is presented and used in the assignment strategy for workflow instances. The results of our approach fit well for many existing WfMS and also for the reference architecture of the Workflow Management Coalition.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.