As one of the heads of the ergoo Group, I supervise some of our Ph.D. students. I manage the ORB team of the AspectIX project.

In general, my research interests are in the area of operating systems, distributed and object-oriented systems, and the World Wide Web. See also my list of publications.

Here are the projects I am currently involved in:

AspectIX

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AspectIX is a middleware system based on CORBA that supports scalable, quality-aware and self-organized distributed objects. The object-internal communication is not restricted to RPC but open to arbitrary mechanisms that can even be made portable across platforms. A QoS interface allows clients of an object to express their requirements on the object's service. These requirements can influence the object-internal structure and behavior.

FOMAS

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As a spin-off of project AspectIX, FOMAS applies the fragmented object model of AspectIX to the context of mobile agents. The approach is more flexible and can dynamically adapt by more fine-grained location decisions than monolithic mobile agents.

VPC

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The VPC (Virtual Private Computing) is a component-based architecture to bundle (parts of) distributed resources to a virtual and private computer. Based on standard and nonstandard components linked together by a description language, an application is automatically distributed and maintained in the VPC environment.

TFB 21/TP 2

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Analysis of the requirements of workflow management systems on middleware. Adapting the AspectIX architecture to those requirements.

Juggle

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A distributed Java Virtual Machine that automatically balances load by measuring object-access patterns and thread relationships.

Globe

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As a postdoc researcher at Vrije Universiteit Amsterdam, I was a member of the Globe project. As Globe and AspectIX are based on the same object model introduced by SOS, we have been cooperating by mapping the individual research ideas on the other system.

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May 29, 2000