Browsing by Author "Liebel, Grischa"

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    Model-Based Engineering for Embedded Systems in Practice
    (2014-11-18) Marko, Nadja; Liebel, Grischa; Sauter, Daniel; Lodwich, Aleksander; Tichy, Matthias; Leitner, Andrea; Hansson, Jörgen; Staron, Miroslaw; University of Gothenburg
    Model-Based Engineering (MBE) aims at increasing the e↵ectiveness of engineering by using models as key artifacts in the development process. While empirical studies on the use and the e↵ects of MBE in industry generally exist, there is only little work targeting the embedded systems domain. We contribute to the body of knowledge with a study on the use and the assessment of MBE in that particular domain. Therefore, we collected quantitative data from 112 subjects, mostly professionals working with MBE, with the goal to assess the current State of Practice and the challenges the embedded systems domain is facing. Of the 112 subjects, the majority are experienced with MBE, working at large companies in the automotive, avionics, or healthcare domains. Additionally, mainly OEMs and First-tier suppliers are represented in the study. Our main findings are that MBE is used by a majority of all participants in the embedded systems domain, mainly for simulation, code generation, and documentation. Reported positive e↵ects of MBE are higher quality and improved reusability. Main shortcomings are interoperability difficulties between MBE tools, high training e↵ort for developers and usability issues. The data also shows that there are no large di↵erences between subgroups with respect to domains, position in the value chain, company size and product size.
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    Ready for Prime Time, - Yes, Industrial-Grade Modelling Tools can be Used in Education
    (University of Gothenburg, 2015-10-16) Liebel, Grischa; Heldal, Rogardt; Steghöfer, Jan-Philipp; Chaudron, Michel R V; Staron, Miroslaw; University of Gothenburg
    It has been stated that industrial-grade modelling tools are unsuit- able for teaching modelling. In this paper, we present our experience with a university course on software modelling. In the first year of the course, we used a commercial modelling tool, in the second year the open- source alternative Papyrus. Both tools are considered to be of industrial grade and used in industry. Our quantitative analysis shows that the industrial-grade modelling tools with all their complexity did not have a negative impact on the students’ experience of modelling. This shows that industrial-grade modelling tools can be used in the classroom. We analyse why our experience differs from published accounts and conclude that the availability of a tool champion and tailored instruction mate- rial is key. From this, we derive recommendations for teacher support from tool-providers (vendors and open source), research directions for researchers and teachers, and for training efforts in the industry.