Henner Gimpel

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The Web and Grid services frameworks provide a promising infrastructure for cross-organizational use of online services. The use of services in large-scale and cross-organizational environments requires the negotiation of agreements that define these services. Buying at a fine granularity just when a need arises is only feasible if the costs of establishing(More)
b s t r a c t Electronic markets and especially online auctions gain more and more importance and a plethora of market mechanisms is emerging on the Internet. The great variety of trading rules hinders agents easily switching between different marketplaces and, therefore, fragments the overall market – supply and demand might fail to meet due to agents'(More)
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Market engineering is the discipline of making markets work. It encompasses the use of legal frameworks, economic mechanisms, management science models, and information and communication technologies for the purposes of: (i) designing and constructing forums where goods and services can be bought and sold and (ii) providing services associated with buying(More)
In today's Internet economy, new business models emerge to respond to business opportunities that one organization alone can not exploit. Virtual organizations (VOs) are a prominent example for such models currently investigated in, e.g., collaborative engineering and aggregated services provisioning. The partner selection process is a problem that needs to(More)
A new generation of patient-driven healthcare information systems (HIS) is emerging to advance traditional healthcare services and empower patient self-responsibility. Professional approaches to develop or improve HIS exist alongside evolving individual and community-shared approaches where patients take responsibility for their health data and health.(More)
Individualized services are common in distributed computing systems: Consumers demand custom solutions and service providers tailor their offering. In negotiating a service contract, providers and consumers frequently fail in identifying the optimal combination of non-functional properties and price. A key reason is that negotiators simultaneously try to(More)