Michael Sonntag

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We tested 55 deceased vespertilionid bats of 12 species from southern Germany for virus infections. A new adenovirus was isolated from tissue samples of 2 Pipistrellus pipistrellus bats, which represents the only chiropteran virus isolate found in Europe besides lyssavirus (rabies virus). Evidence was found for adenovirus transmission between bats.
Ajax is a new model for Web applications to provide more responsive and faster user interfaces resembling more closely that of applications. Typical usage areas are user input validation without page submission, integrating small elements from several servers on a single page, and simulating push-services. Especially the latter are promising for enhancing(More)
Introduction Because in the production learning material is very costly to create, the aim of providing reusability is as important as it is for any software as well. But additionally reusability in e-learning also covers re-use of organisational structures (manifests) including course syllabus and other navigation vehicles as roadmaps, which we will(More)
When creating learning content for online or offline viewing, metadata is an important part, so the Learning Management System can decide what to show whom in which form, or perform other functions (e. g. examinations, enrolment). For reusing content it must be possible to create offline versions (e. g. on CDs) from the same data to avoid inconsistencies(More)
Mobile agents are autonomous entities that handle tasks for their owner. Agents act on their own by reacting to changes and by planning their course of action. These agents can move from one server to another. In the future, agents will also be supplied with real money in some form to pay for resources or services.In this paper we discuss a dynamic security(More)
OBJECTIVE The aim of the study was to analyse the psychometric properties of the EQ-5D in patients with social phobia. METHODS We used a sample of 445 patients with social phobia with five measurement points over a 30 month period. The discriminative ability of the EQ-5D was analysed by comparing the patients' responses with the general population and(More)
E-learning is often the equivalent of a conventional text-book: Identical for all learners. Instead, it should be more like a classroom, where a teacher adapts some, but not all, elements of teaching for each learner individually. For this, interests of students must be identified. An online learning platform was enhanced through agents to derive keywords(More)
An important part of E-Government is bringing administration closer to citizens. A way for this are webportals, where information and (increasingly in the future) online transactions are possible. To improve the utility of these portals, personalization can be used for presenting more tightly focused information. As customers of such services can be both(More)
Public administration should serve the citizens. However, electronic communication with it is still in its infancy. To improve response speed on inquiries and allow unattended inspection of records, an unambiguous and secure way of identifying records is needed. Another issue is how citizens locate the person responsible for handling certain requests. If(More)