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Abstract. Problems such as inconsistent or erroneous instrumentation often plague applications whose source code is manually instrumented during the implementation phase. Integrating performance instrumentation capabilities into the Model Driven Software Development (MDSD) process would greatly assist software engineers who do not have detailed knowledge of source code instrumentation technologies. This paper presents an approach that offers instrumentation support to software designers and developers. A collection of instrumentation patterns is defined to represent typical instrumentation scenarios for distributed applications. A UML profile derived from these patterns is then used to annotate UML models. Based on suitable code generation templates, the annotated models are transformed into instrumented source code for different instrumentation APIs. A prototypical implementation, including an adaptation to Web services, was evaluated in a lab environment.

Software components are elemental units of software that can be realised within distributed, object-oriented architectures such as CORBA or DCOM. This paper describes special aspects of reuse in such componentware architectures and discusses possible mechanisms for implementation reuse. It introduces the concept of Component Adapters -software components mapping requests of client components to appropriate implementations provided by server components. These support the realisation of implementation inheritance at object level (dynamic inheritance). A management architecture is described which supports dynamic inheritance. This includes managing and maintaining a system-wide "object schema" for inter-component inheritance relationships.

To view virtual universities as an extension of real universities and of distant learning Institutes, new concepts in the area of distributed systems and virtual universities are needed. Mobile agents satisfy many requirements of such a highly dynamic system. Originally, mobile agents were used as a workflow system for a virtual university. These autonomous entities must next generate dynamic workflows. Examining the behaviour of ants in different situations, some conclusions regarding the use of mobile agents can be drawn. This paper presents the new ideas of a joint research project and gives an overview of the problems that confront us.

Abstract.Managing an IT environment requires the exchange of structured data between different agents. The Common Information Model (CIM) is a comprehensive open standard that specifies how managed elements in an IT environment are modelled as a set of common objects and relationships between them. It has however limited support for knowledge interoperability and aggregation, as well as reasoning. By converting the existing CIM model into a format that can be processed by semantic web tools, these limitations can be overcome. This paper describes how CIM can be converted into a Web Ontology Language (OWL) ontology including constructs for which no obvious direct conversion exists, such as CIM qualifiers.