Matthias M. Hölzl

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A functional cervical spine disorder is often the cause for persistent vertigo, which can last months or several years. The existence of cervical vertigo is not generally recognized, mainly because an objectivation of the cervical nystagmus is not easily understood by many examiners. In this study we examine additional parameters, which underline the(More)
Service-oriented computing is an emerging paradigm where services are understood as autonomous, platform-independent computational entities that can be described, published, categorised, discovered, and dynamically assembled for developing massively distributed, interoperable, evolvable systems and applications. The IST-FET Integrated Project SENSORIA aims(More)
Ensembles—software-intensive systems with massive numbers of nodes or complex interactions between nodes, operating in open and non-deterministic environments and dynamically adapting to changes in their environment or requirements—pose many challenges to software development. We present first steps towards a system model for ensembles that allows us to(More)
Today's developers often face the demanding task of developing software for ensembles: systems with massive numbers of nodes, operating in open and non-deterministic environments with complex interactions , and the need to dynamically adapt to new requirements, technologies or environmental conditions without redeployment and without interruption of the(More)
Soft constraints are gaining popularity in diverse areas such as orchestration of Web services or optimization of scheduling decisions. However, current approaches to soft constraints preclude them from modelling certain decision problems with multiple preference criteria. We propose a new approach to soft constraints which allows a natural expression of(More)