@inproceedings{ReuterKnietzschHauseretal., author = {Reuter, Rebecca and Knietzsch, Marco and Hauser, Florian and Mottok, J{\"u}rgen}, title = {Supporting Abstraction Skills Using Augmented Reality?}, series = {ITiCSE '19, Proceedings of the 2019 ACM Conference on Innovation and Technology in Computer Science Education, July 2019, Aberdeen Scotland UK}, booktitle = {ITiCSE '19, Proceedings of the 2019 ACM Conference on Innovation and Technology in Computer Science Education, July 2019, Aberdeen Scotland UK}, doi = {10.1145/3304221.3325562}, abstract = {We investigated the potential of augmented reality (AR) to enable visualization of abstract concepts and present the first iteration of a teaching experiment that evaluates the use of AR as support for abstraction skills. Students were confronted with the task to present and explain information to different groups of stakeholders at the example of a coffee machine. Results show that students find it helpful to have a visual app-prototype and especially one that can be disassembled in different levels. The main goal was to sensitize students for the need to think about and to abstract information for certain roles and perspectives.}, language = {en} } @inproceedings{SchreistetterHauserReuteretal., author = {Schreistetter, Stefan and Hauser, Florian and Reuter, Rebecca and Jahn, Sabrina and Mottok, J{\"u}rgen}, title = {Using Eye Tracking Data to analyze students' tasks solving behavior in classroom contexts}, series = {12th International Conference of Education, Research and Innovation (ICERI 2019), Conference Proceedings, 2019, Seville (Spain)}, booktitle = {12th International Conference of Education, Research and Innovation (ICERI 2019), Conference Proceedings, 2019, Seville (Spain)}, isbn = {978-84-09-14755-7}, issn = {2340-1095}, doi = {10.21125/iceri.2019.1473}, pages = {6087 -- 6096}, language = {en} } @inproceedings{JahnGoldVeerkampReuteretal., author = {Jahn, Sabrina and Gold-Veerkamp, Carolin and Reuter, Rebecca and Mottok, J{\"u}rgen and Abke, J{\"o}rg}, title = {Secure Software Engineering in academic education: students' sreconceptions of it security}, series = {12th International Conference of Education, Research and Innovation (ICERI2019), 11-13 November 2019, Seville, Spain}, booktitle = {12th International Conference of Education, Research and Innovation (ICERI2019), 11-13 November 2019, Seville, Spain}, doi = {10.21125/iceri.2019.1624}, pages = {6825 -- 6834}, language = {en} } @inproceedings{HauserReuterGegenfurtneretal., author = {Hauser, Florian and Reuter, Rebecca and Gegenfurtner, Andreas and Gruber, Hans and Mottok, J{\"u}rgen}, title = {Eye movements in software modelling - what do they tell us about heuristics}, series = {12th International Conference of Education, Research and Innovation (ICERI 2019), Conference Proceedings, 2019, Seville (Spain)}, booktitle = {12th International Conference of Education, Research and Innovation (ICERI 2019), Conference Proceedings, 2019, Seville (Spain)}, isbn = {978-84-09-14755-7}, doi = {10.21125/iceri.2019.1469}, pages = {6064 -- 6070}, language = {en} } @inproceedings{SteindlMottok, author = {Steindl, Michael and Mottok, J{\"u}rgen}, title = {Optimizing Software Integration Testing by Considering Integration Testability and Test Complexity}, series = {10th IEEE Workshop on Intelligent Solutions in Embedded Systems, 2012, Klagenfurt, Austria}, booktitle = {10th IEEE Workshop on Intelligent Solutions in Embedded Systems, 2012, Klagenfurt, Austria}, language = {en} } @inproceedings{SoskaMottok, author = {Soska, Alexander and Mottok, J{\"u}rgen}, title = {An Integrated Puzzle Game for Learning Programming Based on Students Syntactical Errors}, series = {11th European Conference on Game-Based Learning, Oct 5 - Oct 6, 2017, Graz}, booktitle = {11th European Conference on Game-Based Learning, Oct 5 - Oct 6, 2017, Graz}, editor = {Pivec, M. and Gr{\"u}ndler, J.}, publisher = {Academic Conferences and Publishing International}, abstract = {Practical implementations are important for understanding the concepts and principles of programming. Self-employed coding encourages learners to acquire learning content and fosters the theory-practice transfer. Thereby, the earners face various difficulties and obstacles. Misconceptions and faults accompany the learners' coding process and result in non-executable coding artefacts. The integrated compiler of programming environments provides information concerning error messages that indicate incorrect coding constructs. Usually due to unspecific and generic formulation, learners find it hard to understand these error messages. Yet these observable errors give valuable information about the learner's coding behaviour and indicate current problems. These provide a link for adopted and appropriate learning assistance during the coding process. In this work in progress paper, we present first assumptions in assisting learners' understanding and correction of programming errors by a game-based learning method. Our first approach focuses on the integration of a puzzle game into a programming environment. The game content adjusts to the error messages based on the analysis of the learner's log file. We suggest that the integration of this approach rises the learner's motivation to self-employed error handling and the quality of learning programming.}, language = {en} } @inproceedings{OsinskiMottok, author = {Osinski, Lukas and Mottok, J{\"u}rgen}, title = {S 3DES - Scalable Software Support for Dependable Embedded Systems}, series = {Architecture of Computing Systems - ARCS 2019, 32nd International Conference, Copenhagen, Denmark, May 20-23, 2019, Proceedings}, booktitle = {Architecture of Computing Systems - ARCS 2019, 32nd International Conference, Copenhagen, Denmark, May 20-23, 2019, Proceedings}, editor = {Schoeberl, Martin and Hochberger, Christian and Uhrig, Sascha and Brehm, J{\"u}rgen and Pionteck, Thilo}, publisher = {Springer}, address = {Cham}, doi = {10.1007/978-3-030-18656-2_2}, pages = {15 -- 27}, abstract = {Scalable Software Support for Dependable Embedded Systems (S3DES) achieves fault tolerance by utilizing spatial software-based triple modular redundancy for computational and voter processes on application level. Due to the parallel execution of the replicas on distinct CPU cores it makes a step towards software-based fault tolerance against transient and permanent random hardware errors. Additionally, the compliance with real-time requirements in terms of response time is enhanced compared to similar approaches. The replicated voters, the introduced mutual voter monitoring and the optimized arithmetic encoding allow the detection and compensation of voter failures without the utilization of backward recovery. Fault injection experiments on real hardware reveal that S3DES can detect and mask all injected data and program flow errors under a single fault assumption, whereas an uncoded voting scheme yields approx. 12\% silent data corruptions in a similar experiment.}, language = {en} } @inproceedings{WeihererOsinskiMottok, author = {Weiherer, Kerstin and Osinski, Lukas and Mottok, J{\"u}rgen}, title = {Software-Based Triple Modular Redundancy with Fault-Tolerant Replicated Voters}, series = {32nd International Conference on Architecture of Computing Systems, ARCS Workshop 2019, 20-21 May 2019, Copenhagen, Denmark}, booktitle = {32nd International Conference on Architecture of Computing Systems, ARCS Workshop 2019, 20-21 May 2019, Copenhagen, Denmark}, pages = {1 -- 8}, abstract = {New computing-intensive applications such as assisted or highly automated driving are rapidly expanding the domain of safety-critical embedded systems, driven by the vision of the driverless car. This development makes it necessary to use high performance multi-core systems which are commercially available and provide more parallelism in terms of redundant execution units, however, at the cost of being less reliable. With the continuous down-scaling of semiconductor technology, computing hardware exhibits an increasing vulnerability against random hardware faults. Since these high-performance controller provide less or no hardware redundancy to ensure a safe execution of the application, software-only fault tolerance approaches are under current investigation. Our Scalable Software Support for Dependable Embedded Systems (S3DES) approach achieves fault tolerance by utilizing software-based triple modular redundancy for computational and optimized arithmetic encoded voter processes to ensure fault detection and error handling on application level. In S3DES voters are replicated to allow the compensation of voting failures. However, new challenges with regard to error propagation and multiple voting result outputs are introduced by this extension. We describe how mutual voter monitoring and threshold value checks could be used to establish a hierarchy among the replicated voters without re-introducing a reliability bottleneck in the sense of a single point of failure and resolve the aforementioned challenges.}, language = {en} } @inproceedings{JahnKaulMottok, author = {Jahn, Sabrina and Kaul, Nicolas and Mottok, J{\"u}rgen}, title = {Using or Misusing? Introducing Misuse Cases in a Software Engineering Course for Undergraduate Engineering Students}, series = {ITiCSE '22 : Proceedings of the 27th ACM Conference on on Innovation and Technology in Computer Science Education, Vol 1: July 8 - 13, 2022, Dublin Ireland}, booktitle = {ITiCSE '22 : Proceedings of the 27th ACM Conference on on Innovation and Technology in Computer Science Education, Vol 1: July 8 - 13, 2022, Dublin Ireland}, publisher = {Association for Computing Machinery}, address = {New York, NY}, doi = {10.1145/3502718.3524823}, pages = {491 -- 497}, abstract = {Today's cyberphysical systems are increasingly prone to misuse. To secure existing and future software systems, introducing concepts of IT-Security and Secure Software Engineering (SecSE) in Software Engineering (SE) courses is essential for academic education of future software engineers. This is not only important for computer science students, but also for engineering students studying topics of computing and SE. However, only little research exists on integrating these topics into traditional SE courses, especially for engineering students in non-computer science majors. To narrow this gap, this paper contributes with the design and evaluation of an exercise on modeling misuse cases alongside use cases, based on the inductive teaching method problem-based learning (PBL). The exercise is part of an educational design research investigating which learning content and teaching methods are suitable for integrating IT-Security and SecSE topics into traditional SE education of engineering students to convey factual knowledge as well as raise awareness and interest for both topics during software development. We present the integration of the exercise design into a traditional SE course for engineering students and its evaluation to examine its suitability. We evaluated the exercise design regarding the suitability of the design components, the learning content of misuse cases and the intended learning goals as well as its impact on students' motivation, and their interest in IT-security. The paper then presents indications on the feasibility and success of the exercise design for teaching misuse cases to engineering students and sparking their interest in IT-Security.}, language = {en} } @inproceedings{ReuterJahnFigasetal., author = {Reuter, Rebecca and Jahn, Sabrina and Figas, Paula and Bartel, Alexander and Mottok, J{\"u}rgen and Hagel, Georg}, title = {Learning Tasks for Software Engineering Education: An exemplary development of learning tasks for software engineering based on didactic function and knowledge type}, series = {Proceedings of the 3rd European Conference of Software Engineering Education (ECSEE'18), JUne 2018, Seeon, Bavaria, Germany}, booktitle = {Proceedings of the 3rd European Conference of Software Engineering Education (ECSEE'18), JUne 2018, Seeon, Bavaria, Germany}, doi = {10.1145/3209087.3209097}, pages = {1 -- 7}, abstract = {Learning tasks play an important role in education and especially in higher education. However, there is a significant lack in research regarding these in higher education. A learning task shows several characteristics, whereas the didactic function of a task is mostly considered. Two characteristics of learning tasks are focused in this paper: The didactic function and the type knowledge. Existing types of learning tasks are presented as well as a proposal for learning tasks in software engineering education that considers didactic functions, like elaboration, training or application and types of knowledge, i.e. factual, conceptual, procedural and metacognitive knowledge. This paper aims to serve as a guidance for lecturers who have the purpose to create learning tasks that address both characteristics -- the didactic function and the type of knowledge.}, language = {en} } @inproceedings{OsinskiLangerMaderetal., author = {Osinski, Lukas and Langer, Tobias and Mader, Ralph and Mottok, J{\"u}rgen}, title = {Challenges and Opportunities with Embedded Multicore Platforms}, series = {9th European Congress Embedded Real Time Software and Systems (ERTS 2018), January 31st to Febraury 2nd 2018, Toulouse, France}, booktitle = {9th European Congress Embedded Real Time Software and Systems (ERTS 2018), January 31st to Febraury 2nd 2018, Toulouse, France}, language = {en} } @inproceedings{MuellerJahnReuteretal., author = {M{\"u}ller, L. and Jahn, Sabrina and Reuter, Rebecca and Mottok, J{\"u}rgen}, title = {A Task Design Concept For A Virtual Classroom For Requirements Engineering Education}, series = {ICERI 2018 Proceedings, Seville, Spain}, booktitle = {ICERI 2018 Proceedings, Seville, Spain}, editor = {Chova, L. G. and Mart{\´i}nez, A. L. and Torres, I. C.}, doi = {10.21125/iceri.2018.1216}, pages = {911 -- 920}, language = {en} } @inproceedings{SeebauerJahnMottok, author = {Seebauer, Stefan and Jahn, Sabrina and Mottok, J{\"u}rgen}, title = {Escape Rooms for teaching IT-Security}, series = {12th International Conference of Education, Research and Innovation (ICERI2019), 11-13 November 2019, Seville, Spain}, booktitle = {12th International Conference of Education, Research and Innovation (ICERI2019), 11-13 November 2019, Seville, Spain}, doi = {10.21125/iceri.2019.1623}, pages = {6815 -- 6824}, language = {en} } @inproceedings{KraemerRaabMottoketal., author = {Kr{\"a}mer, Stefan and Raab, Peter and Mottok, J{\"u}rgen and Racek, Stanislav}, title = {Reliability analysis of real-time scheduling by means of stochastic simulation}, series = {2012 International Conference on Applied Electronics (AE 2012), Pilsen, Czech Republic, 5 - 7 September 2012}, booktitle = {2012 International Conference on Applied Electronics (AE 2012), Pilsen, Czech Republic, 5 - 7 September 2012}, pages = {151 -- 156}, abstract = {We present a simulation-based approach to reliability analysis combined with a schedulability analysis of software intensive embedded real-time systems. In such a system not only does the software execution have to be hardened against soft errors, e.g., by means of coded processing or diverse execution, but also the real-time requirements have still to be met in the presence of such error to guarantee a safe operation of the system. For that reason, the influence regarding the real-time characteristics of a given sporadic error with a certain error rate is analyzed by means of a Monte Carlo simulation. Different safety design patterns are introduced and compared. Furthermore, the impact on the schedulability of an embedded system is discussed.}, language = {en} } @inproceedings{SchummJosephSchrollDeckeretal., author = {Schumm, Michael and Joseph, Saskia and Schroll-Decker, Irmgard and Niemetz, Michael and Mottok, J{\"u}rgen}, title = {Required competences in software engineering - pair programming as an instrument for facilitating life-long learning}, series = {15th International Conference on Interactive Collaborative Learning and 41st International Conference on Engineering Pedagogy, Villach}, booktitle = {15th International Conference on Interactive Collaborative Learning and 41st International Conference on Engineering Pedagogy, Villach}, doi = {10.1109/ICL.2012.6402229}, abstract = {The professional requirements in software engineering have become highly volatile due to the complexities of project development and rapid and innovative changes occurring in the field. Therefore, the development of inter-personal and social competences has gained central importance in the training of software developers. The following text will present a concept allowing to acquire competences by using Pair Programming as an instrument. Moreover, arrangements for learning and teaching will be presented facilitating the acquisition of these competences. By approaching the issue of competence acquisition on a technical as well as on an educational and social level, lifelong learning is facilitated and supported.}, language = {en} } @inproceedings{SchmittnerScharfenbergMottoketal., author = {Schmittner, Christoph and Scharfenberg, Georg and Mottok, J{\"u}rgen and Strassmeier, Stefan and Limmer, Thomas}, title = {Analysis of the functional and electrical safety of charging stations}, series = {2nd Applied Research Conference 2012 (ARC 2012), 25./26. June 2012, Nuremberg}, booktitle = {2nd Applied Research Conference 2012 (ARC 2012), 25./26. June 2012, Nuremberg}, pages = {80 -- 85}, abstract = {The number of public charging stations for electric vehicles is rising. It's estimated that in 2014 more than 1.000.000 public charging stations will be installed worldwide. Currently there is no specific standard for Functional Safety and the standard for Electrical Safety is derived from standards for similar systems. The intent of this paper is to examine the existing safety architecture of mode 3 charging stations. First the standards for the charging process and the different modes are presented. Then a standard architecture for a mode 3 charging station, based on the IEC 61841, is described. After that a risk analysis of this model is performed and the electrical and Functional Safety of the architecture are analyzed. Both analyses are based on the general safety standards VDE 0100 and IEC 61508. After that possibilities for improvements and future challenges with Mode 4 charging are discussed.}, language = {en} } @inproceedings{RaabRacekKraemeretal., author = {Raab, Peter and Racek, Stanislav and Kr{\"a}mer, Stefan and Mottok, J{\"u}rgen}, title = {Reliability of Task Execution during Safe Software Processing}, series = {15th Euromicro Conference on Digital System Design, Cesme, Turkey}, booktitle = {15th Euromicro Conference on Digital System Design, Cesme, Turkey}, doi = {10.1109/DSD.2012.110}, pages = {84 -- 89}, abstract = {This paper presents the reliability evaluation of task execution during safe software processing. The standard method of duplication in a safety-critical application can also be applied for tasks in a software system. But in addition to this, there is also the possibility for coded task processing to increase the reliability and availability of software. The presented analysis covers the reliability analysis of a single, a duplicated and a coded task by the technique of continuous time Markov processes. Markov processes are often used for the reliability evaluation of safety-critical systems. We introduce a method to describe the execution time of tasks by means of enhanced Markov models and their solution by numerical methods.}, language = {en} } @article{OstermeierMottokKnorretal., author = {Ostermeier, Daniel and Mottok, J{\"u}rgen and Knorr, Christine and Huber, Michael}, title = {Competence Atlas for Save and Green Road Vehicles in the Electro Mobility Cluster Regensburg}, series = {Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg}, journal = {Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg}, editor = {Mottok, J{\"u}rgen and Ziemann, Olaf}, pages = {86 -- 92}, language = {en} } @inproceedings{Mottok, author = {Mottok, J{\"u}rgen}, title = {Migration path for secure and economic smart power grid devices with transitional smart metering support}, series = {2nd Applied Research Conference 2012 (ARC 2012), 25./26. June 2012, Nuremberg}, booktitle = {2nd Applied Research Conference 2012 (ARC 2012), 25./26. June 2012, Nuremberg}, pages = {64 -- 70}, language = {en} } @inproceedings{Mottok, author = {Mottok, J{\"u}rgen}, title = {Porting the microsoft .net micro framework onto an embedded operating system}, series = {2nd Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg}, booktitle = {2nd Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg}, pages = {26 -- 30}, language = {en} } @article{Mottok, author = {Mottok, J{\"u}rgen}, title = {Embedded functional safety, funktional safety in der praxis}, series = {Bayern Innovativ}, journal = {Bayern Innovativ}, language = {en} } @inproceedings{Mottok, author = {Mottok, J{\"u}rgen}, title = {Embedded trends}, series = {Technologietag 2012, am 28. M{\"a}rz, M{\"u}nchen}, booktitle = {Technologietag 2012, am 28. M{\"a}rz, M{\"u}nchen}, language = {en} } @inproceedings{LandesSedelmaierPfeifferetal., author = {Landes, Dieter and Sedelmaier, Yvonne and Pfeiffer, Volkhard and Mottok, J{\"u}rgen and Hagel, Georg}, title = {Learning and teaching software process models}, series = {Proceedings of the 2012 IEEE Global Engineering Education Conference (EDUCON), 17-20 April 2012, Marrakech, Morocco}, booktitle = {Proceedings of the 2012 IEEE Global Engineering Education Conference (EDUCON), 17-20 April 2012, Marrakech, Morocco}, doi = {10.1109/EDUCON.2012.6201191}, abstract = {Software process models are fairly abstract tools for organizing large, complex software development projects. Since particularly undergraduate students commonly do not have any experience in being part of such a project, their understanding of the benefits and shortcomings of particular process models is very limited. Even more, frequently they are not aware of the need to follow a particular process model since their previous one-person software assignments were too small for requiring any such model at all.}, language = {en} } @inproceedings{AbkeBruneHauptetal., author = {Abke, J{\"o}rg and Brune, Philipp and Haupt, Wolfram and Hagel, Georg and Landes, Dieter and Mottok, J{\"u}rgen and Niemetz, Michael and Pfeiffer, Volkhard and Studt, Reimer and Schroll-Decker, Irmgard and Sedelmaier, Yvonne}, title = {Evelin - ein Forschungsprojekt zur systematischen Verbesserung des Lernens von Software Engineering}, series = {Tagungsband 5th Embedded Software Engineering Kongress, 3. bis 7. Dezember 2012, Sindelfingen}, booktitle = {Tagungsband 5th Embedded Software Engineering Kongress, 3. bis 7. Dezember 2012, Sindelfingen}, isbn = {978-3-8343-2407-8}, pages = {653 -- 658}, language = {de} } @inproceedings{SchmidhuberDeubzerMottok, author = {Schmidhuber, Stefan and Deubzer, Michael and Mottok, J{\"u}rgen}, title = {Genetic optimization of real-time multicore systems with respect to communication-based metrics}, series = {2nd Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg}, booktitle = {2nd Applied Research Conference 2012 (ARC 2012) 25./26. June 2012, Nuremberg}, editor = {Mottok, J{\"u}rgen and Ziemann, Olaf}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8440-1093-0}, pages = {21 -- 25}, language = {en} }