The KLU faculty, post-docs, and PhD candidates regularly publish the results of their research in scientific journals. You will find a complete overview of all KLU publications below (e.g. articles in peer-reviewed journals, professional journals, books, working papers, and conference proceedings). Search for relevant terms and keywords, or filter the list by name, year of publication or type of publication. The references include DOIs and abstracts where available, and you can download them to your own reference database or platform. We regularly update the database with new publications.

Book Chapters

Copy reference link   DOI: 10.1007/978-3-8349-9121-8_6

Abstract: Im Ablauf des empirischen Forschungsprozesses stellt sich nach der Festlegung der Datenerhebungsmethode und der entsprechenden Skalierung der zu untersuchenden Merkmale die Frage nach der Auswahl der Erhebungseinheiten, bei denen die Daten erhoben werden sollen. Diese Datenerhebung kann als Voll- oder Teilerhebung durchgeführt werden.

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Copy reference link   DOI: 10.4018/978-1-60566-288-6.ch014

Abstract: Even though process orientation/BPM is a widely accepted paradigm with heavy impact on industry and research the available technology does not support the business professionals’ tasks in an appropriate manner that is in a way allowing processes modeling using concepts from the business domain. This results in a gap between the business people expertise and the IT knowledge required. The current trend in bridging this gap is to utilize technologies developed for the Semantic Web, for example ontologies, while maintaining reusability and flexibility of processes. In this chapter the authors present an overview of existing technologies, supporting the BPM lifecycle, and focus on potential benefits Semantic Web technologies can bring to BPM. The authors will show how these technologies help automate the transition between the inherently separate/detached business professionals’ level and the IT level without the burden of additional knowledge acquisition on behalf of the business professionals. As background information they briefly discuss existing process modeling notations like the Business Process Modeling Notation (BPMN) as well as the execution centric Business Process Execution Language (BPEL), and their limitations in terms of proper support for the business professional. The chapter stresses on the added value Semantic Web technologies yield when leveraged for the benefit of BPM. For this the authors give examples of existing BPM techniques that can be improved by using Semantic Web technologies, as well as novel approaches which became possible only through the availability of semantic descriptions. They show how process model configuration can be automated and thus simplified and how flexibility during process execution is increased. Additionally, they present innovative techniques like automatic process composition and auto-completion of process models where suitable process fragments are automatically discovered to make up the process model. They also present a reference architecture of a BPM system that utilizes Semantic Web technologies in an SOA environment.

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Copy reference link   DOI: 10.1007/978-3-540-78617-7_5

Abstract: Service composition enables the creation of services previously unavailable through the aggregation of existing services. The result is called a service composition. Exposing a service composition as a service, the result is called a composed service. It can be distinguished from atomic services. Service composition approaches can be differentiated along two axes: point in time of composition and degree of automation. With design-time and run-time we can identify two different points in time for doing a composition. Additionally we can distinguish between three different degrees of automation: manual, assisted, and automated service composition.

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Copy reference link   DOI: doi:10.1007/978-3-540-79551-3_12

Abstract: Der Patentschutz spielt in vielen Branchen eine zentrale Rolle als Schutz vor Imitationskonkurrenz118 und damit als Innovationsanreiz119. In der pharmazeutischen Industrie ist der Patentschutz besonders bedeutsam. Dieses liegt erstens in langen Forschungs- und Entwicklungszeiten und damit dem hohen Risiko einer Markteinführung des entdeckten Wirkstoffs durch einen Wettbewerber begründet. Zweitens besteht ein für Innovatoren besonders ungünstiges Verhältnis zwischen hohen Innovations- und geringen Imitationskosten. Und drittens ist der durch Patente gewährte Schutz in der pharmazeutischen Industrie besonders wirksam: Das Angebot desselben Moleküls durch einen Wettbewerber ist aufgrund der herrschenden Transparenz unmöglich; würde er aber ein außerhalb der Patentbreite liegendes abgeleitetes Molekül anbieten wollen, müssten zuvor zeit- und kostenintensive klinische Studien durchgeführt werden.

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Copy reference link   DOI: 10.1007/978-3-540-89652-4_56

Abstract: Service provisioning is largely built on agreements specifying the mutual responsibilities of service providers and their customers with respect to functional and non-functional parameters. Current SLA management approaches, i.e. WSLA, WS-Agreement, or WSOL, provide extensive SLA language formalizations and management frameworks. However, they focus on bi-lateral service requester/provider constellations neglecting the SLA management requirements of composite service providers, i.e. managing SLAs with atomic service providers and with composite service requesters and aligning both with each other. A SLA management solution for composite services has to consider the contribution of sourced services - formalized in their (atomic) SLAs (ASLA) - in the management of the provided service - formalized in its respective (composite) SLA (CSLA). This paper presents the novel COmposite Sla MAnagement (COSMA) approach for an integrated management of atomic and composite SLAs during their entire lifecycle. It can be utilized for controlling the relationships between ASLAs/CSLAs and thus serves as the basis for managing and optimizing the SLAs involved in composite services.

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Abstract: Service compositions enable users to realize their complex needs as a single request. Despite intensive research, especially in the area of business processes, web services and grids, an open and valid question is still how to manage service compositions in order to satisfy both functional and non-functional requirements as well as adapt to dynamic changes. In this paper we describe an approach towards adaptive management of QoS-aware service compositions. This approach integrates well known concepts and techniques and proposes various execution strategies based on dynamic selection and negotiation of services, contracting based on service level agreements, service enactment with flexible support for exception handling, monitoring of service level objectives, and profiling of execution data.

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