Pieter van Langen

Delft University of Technology | TU · Department of Multi Actor Systems

Research through Design entails the generation of research insights by performing a design exercise. In literature, Research through Design has not quite taken shape as a methodology that supports its practical use. Therefore, literature provides little practical guidance to conduct a research led by this approach. To fill this knowledge gap, this...

Decentralized performance-aware reconfiguration of complex

Not only do generic compositional models of design support the analysis of design processes and the development of practical design support systems, they also provide the basic structure for more specific design process models. The generic

Execution of complex workflows is one of many applications of P2P networks. Sustaining complex workflows in a dynamic P2P network requires adaptation when hosts involved in the work-flow lose network connectivity. Adaptation of complex workflows without centralised monitoring and control is a challenge, and is often limited to instance replacement....

Design involves reasoning about descriptions of de sign artefacts, reasoning about design requirements and reasoning about design process objectives (such as keeping to deadlines and available budget). Rea soning about these three aspects occurs during exploration , generation and evaluation of partial design descr iptions. Design space exploration...

As the number of Web services in repositories on the World Wide Web increases so do the number of complex configurations of Web services. However, as the World Wide Web is dynamic, Web services come and go, temporarily or for good. As a result, complex Web service configurations need to be reconfigured on demand. To this purpose, complex Web servic...

Can artificial systems be creative? Can they be designed to be creative on their own? What are the requirements of such creative artificial systems? To be able to support humans who are expected to deliver creative solutions, or to automate part of their tasks, this paper presents a proposal for creativity requirements that provide a basis for desi...

Not only do generic compositional models of design support the analysis of design processes and the development of practical design support systems, they also provide the basic structure for more specific design process models. The generic design model GDM provides a compositional structure that has been refined for different types of design as ill...

In interactive design processes, strategic decisions are made at different levels. To support designers, design support systems need to include corresponding strategic knowledge at these levels. In this paper, three levels of strategic interaction and strategic knowledge are identified within a compositional model of design. These levels are identi...

In interactive design processes, strategic decisions are made at different levels. To support designers, design support systems need to include corresponding strategic knowledge at these levels. In this paper, three levels of strategic interaction and strategic knowledge are identified within a compositional model of design. These levels are identi...

Design support systems need to be developed on the basis of an understanding of the human design process to be useful during design. The explicit representation of design history and rationale are of particular importance for explanation and reuse. Within the DESIRE framework for compositional modelling, a generic task model of design has been deve...

The paper introduces a task model for the redesign of compositional knowledge-based systems based on a generic task model of design. A generic task model of design provides an abstract description of a design task and a generic structure which can be refined for design tasks in specific domains of application. A generic task model of design, shown...

An elevator configuration task, the VT task, is modelled within DESIRE as a design task. DESIRE is a framework within which complex reasoning tasks are modelled as compositional architectures. Compositional architectures are based on a task decomposition, acquired during task analysis. An existing generic task model of design, based on a logical an...

This paper presents assumptions underlying the modelling and specification of the VT task in DESIRE. These assumptions are about the modelling of tasks in general, the specification of task models in DESIRE, the modelling of the VT task in particular, and the problem solving method developed for the VT task. By an explicit formulation of such assum...

This paper presents assumptions underlying the modelling and specification of the VT task in DESIRE. These assumptions are about the modelling of tasks in general, the specification of task models in DESIRE, the modelling of the VT task in particular, and the problem solving method developed for the VT task. By an explicit formulation of such assum...

This paper focusses on how conflicts that arise during a design process and the management of conflicts can be modelled. A number of possible conflict types are distinguished and it is described how each of them can be detected during the design process, using an explicit meta-representation. Furthermore, it is shown how these conflict types can be...

In the development of a design system, a formal specification can play an important role providing a precise description of both the static and the dynamic aspects of the system. Static aspects not only include domain knowledge about properties of design objects and relations between these properties, but also domain knowledge about requirements of...