http://dl.gi.de/handle/20.500.12116/21079 2026-07-23T02:01:19Z http://dl.gi.de/handle/20.500.12116/3041 On the usability of business process modelling tools - a review and future research directions Shitkova, Maria Feltz, Fernand; Mutschler, Bela; Otjacques, Benoît The choice of a business process modelling (BPM) tool in combination with the selection of a modelling language is one of the crucial steps in BPM project preparation. Different aspects influence the decision: tool functionality, price, modelling language support, etc. In this paper we discuss the aspect of usability, which has already been recognized as an important topic in software engineering and web design. We conduct a literature review to find out the current state of research on the usability in the BPM field. The results of the literature review show, that although a number of research papers mention the importance of usability for BPM tools, real usability evaluation studies have rarely been undertaken. Based on the results of the literature analysis, the possible research directions in the field of usability of BPM tools are suggested. 2014-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/3040 Towards schema evolution in object-aware process management systems Chiao, Carolina Ming; Kuenzle, Vera; Reichert, Manfred Feltz, Fernand; Mutschler, Bela; Otjacques, Benoît Enterprises want to improve the lifecycle support for their businesses processes by modeling, enacting and monitoring them based on process management systems (PrMS). Since business processes tend to change over time, process evolution support is needed. While process evolution is well understood in traditional activitycentric PrMS, it has been neglected in object-aware PrMS so far. Due to the tight integration of processes and data, in particular, changes of the data and process schemes must be handled in an integrated way; i.e., the evolution of the data schema might affect the process schema and vice versa. This paper presents our overall vision on the controlled evolution of object-aware processes. Further, it discusses fundamental requirements for enabling the evolution of object-aware process schemas in PHILharmonicFlows, a framework targeting at comprehensive support of object-aware processes. 2014-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/3032 Business process as a service - status and architecture Barton, Thomas; Seel, Christian Feltz, Fernand; Mutschler, Bela; Otjacques, Benoît A Cloud Service is usually classified as Infrastructure as a Service, Platform as a Service or Software as a Service. This classification ist not sufficient, when Business Processes are considered. Therefore, Business Process as a Service (BPaaS) as next level of abstraction is in discussion. BPaaS is already an important topic for analysts and cloud providers. In the scientific community a discussion about BPaaS has been started. This contribution presents a literature analysis of the current state-of-the-art in BPaaS. In order to investigate how a Business Process can be built on top of a cloud service, a prototpye of an external application is presented, which is built on top of a cloud service using a RESTful API. For the realization of BPaaS existing architectures for cloud computing are discussed. A proposal for an advanced Architecture for Business Process as a Service is presented. Based on these findings, a brief outlook on future research questions concerning Business Process as a Service is derived. 2014-01-01T00:00:00Z http://dl.gi.de/handle/20.500.12116/3030 Flexibility and evolution in process-aware information systems: all problems solved ? Rinderle-Ma, Stefanie Feltz, Fernand; Mutschler, Bela; Otjacques, Benoît 2014-01-01T00:00:00Z