Quality of service (QoS) can be a critical element for achieving the business goals of a
service provider, for the acceptance of a service by the user, or for guaranteeing service …

Computational science applications are driving a demand for increasingly powerful storage
systems. While many techniques are available for capturing the I/O behavior of individual …

Outsourcing of complex IT infrastructure to IT service providers has increased substantially
during the past years. IT service providers must be able to fulfil their service-quality …

Web services have a potential to enhance B2B e-commerce over the Internet by allowing
companies and organizations to publish their business processes on service directories …

Emerging blockchain technology is a promising platform for implementing smart contracts.
But there is a large class of applications, where blockchain is inadequate due to …

Web services advocate loosely coupled systems, although current loosely coupled
applications are limited to stateless services. The reason for this limitation is the lack of a …

Smart contracts can be implemented using either centralized or decentralized (blockchain)
platforms. However, for a large class of applications, neither of these two alternatives on its …

The use of policy-based mechanisms significantly reduces the complexity associated with
application development and operation. In particular, history-based policies allow the …

Converting a conventional contract into an electronic equivalent that can be executed and
enforced by computers is a challenging task. The difficulties are caused by the ambiguities …

Abstract Service discovery of state dependent services has to take workflow aspects into
account. To increase the usability of a service discovery, the result list of services should be …