Robin Fischer

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Inconsistent and incomplete information due to the diversity of isolated information architectures in modern healthcare enterprises is one of the major problems information technology has to face in healthcare. The approach of this work is to apply existing Business Process Management principles to medical information systems providing healthcare(More)
Web applications complement the Platform-as-a-Service (PaaS) value by satisfying widespread and rapidly changing consumer requirements within limited time and budget. Successful PaaS providers excel in governing their market performance by leveraging complex network effects, which implicitly control PaaS-ecosystems. There is currently no methodically sound(More)
Cloud storage federation improves service availability and reduces vendor lock-in risks of single-provider cloud storage solutions. Federation therefore distributes and replicates data among different cloud storage providers. Missing controls on data location and distribution however introduce security and compliance issues. This paper proposes a novel(More)
Business processes orchestrate service requests in a structured fashion. Process knowledge, however, has rarely been used to predict and decide about cloud infrastructure resource usage. In this paper, we present an approach for BPM-aware cloud computing that builds on process knowledge to improve the timeliness and quality of resource scaling decisions. We(More)
In the service-oriented computing paradigm and the Web service architecture, the broker role is a key facilitator to leverage technical capabilities of loose coupling to achieve organizational capabilities of dynamic customerprovider-relationships. In practice, this role has quickly evolved into a variety of intermediary concepts that refine and extend the(More)
Platform-as-a-service offerings continuously gain importance as two-sided markets, offering Software-as-a-Service (SaaS) to the respective customers. Market success is achieved by platforms, which excel in shaping ecosystems of users and autonomous SaaS suppliers around their basic value proposition — and in controlling quality of service in function(More)
With the emergence of digital business ecosystems, new control mechanisms are required to sustainably ensure responsiveness on dynamically evolving consumer demand, as well as goal congruence with the platform providers' strategic goals. Based on system theoretical reflections, we propose a 3-layer reference architecture that collects data on service(More)
Service-Oriented Business Ecosystems (SOBEs) contain numerous procedures and rules that act upon services, but are not considered to be services themselves. Thus an asymmetry is created by dividing SOBEs into first-class entities that are services and others that are not. This separation creates inefficiency and conceals the value contribution of(More)