TY - JOUR A1 - Hummel, M. A1 - Mottok, Jürgen A1 - Egen, R. A1 - Schiller, Frank A1 - Mattes, T. A1 - Blum, M. A1 - Druckstein, F. T1 - Generische Safety-Architektur für Kfz-Software JF - Spektrum, das Magazin der Hochschule Regensburg Y1 - 2007 CY - Regensburg ER - TY - JOUR A1 - Federrath, H. A1 - Mottok, Jürgen A1 - Plößl, K. A1 - Völkl, Thomas T1 - Automotive safety and security JF - Jahresrückblick 2007 des Bayerischen IT-Sicherheitsclusters Y1 - 2007 ER - TY - CHAP A1 - Alfranseder, Martin A1 - Krapf, Tobias A1 - Mader, Ralph A1 - Niemetz, Michael A1 - Mottok, Jürgen A1 - Siemers, Christian T1 - An Efficient Partitioning Strategy for Runnables in Weakly Dependent Tasks on Embedded Multi-Core Systems T2 - Embedded real-time software and systems (ERTS² 2014), Feb 2014, Toulouse, France N2 - With multi-core controllers entering the area of automotive control ECUs, strategies for parallelizing the control- algorithms come into focus. This paper deals with a special part of automotive powertrain software, called state transitions. Since dependencies between runnables executed there are weak, the transitions provide a good basis for parallelization. We present a strategy of how to distribute efficiently the execution of runnables to different cores while taking care of inner and outer dependencies. The strategy is accompanied by two case studies demonstrating the performance of the concept. The first one is carried out to find the most efficient strategies of parallelize state transitions based on randomly generated, simulated state transitions. In the second one, the developed partitioning strategies are applied to a real software project for an automotive powertrain system. Y1 - 2014 ER - TY - CHAP A1 - Alfranseder, Martin A1 - Deubzer, Michael A1 - Justus, Benjamin A1 - Mottok, Jürgen A1 - Siemers, Christian T1 - An Efficient Spin-Lock Based Multi-Core Resource Sharing Protocol T2 - 33rd IEEE International Performance, Computing, and Communications Conference (IPCCC), Austin (TX), USA, 5-7 December 2014 N2 - We present in this paper a new lock-based resource sharing protocol PWLP (Preemptable Waiting Locking Protocol) for embedded multi-core processors. It is based on the busy-wait model and works with non-preemptive critical sections while task may be preempted by tasks with a higher priority when waiting for resources. Our protocol can be applied in partitioned as well as global scheduling scenarios, in which task-fix, job-fix or dynamically assigned priorities may be used. Furthermore, the PWLP permits nested requests to shared resources. Finally, we present a case study based on event-based simulations in which the FMLP (Flexible Multiprocessor Locking Protocol) and the proposed PWLP are compared. Y1 - 2014 U6 - https://doi.org/10.1109/PCCC.2014.7017090 ER - TY - CHAP A1 - Thiel, P. A1 - Hackl, Magnus A1 - Mottok, Jürgen T1 - Designing efficient Node.js applications – Approaching useful patterns T2 - 4th Applied Research Conference, 5th July 2014, Ingolstadt Y1 - 2014 SN - 978-3-8440-2875-1 SP - 40 EP - 46 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Schmidhuber, Stefan A1 - Deubzer, Michael A1 - Mader, Ralph A1 - Niemetz, Michael A1 - Mottok, Jürgen T1 - Towards the Derivation of Guidelines for the Deployment of Real-Time Tasks on a Multicore Processor T2 - 4th International Symposium on Model-Based Safety and Assessment (IMBSA 2014), Munich, Germany, October 27-29, 2014, Proceedings N2 - The deployment of automotive software on a multicore processor includes the task of mapping executables to cores. Given the number of possible solutions, integrators have to solve a complex problem. Considering multiple, often conflicting goals like minimizing task response times and memory consumption, complexity further increased with the advent of multicore processors. We present a model-based approach for deriving design rules supporting integrators with statically mapping tasks to a multicore ECU. First, an evolutionary algorithm is used to sample the design space. For each sample, a model-based analysis is performed, resulting in the required fitness values according to the system metric objectives. Finally, subsets of the sample population are used to derive deployment guidelines by evaluating similarities between highly ranked solutions. This reduces the number of solutions to be considered by the integrators by orders of magnitude. In a case-study, we demonstrate the developed approach on an artificial automotive engine management system. KW - Real-time systems KW - embedded multicore systems KW - runnable partitioning KW - task-to-core mapping KW - software integration KW - design space exploration KW - evolutionary algorithm Y1 - 2014 SN - 978-3-319-12213-7 U6 - https://doi.org/10.1007/978-3-319-12214-4_12 SP - 152 EP - 165 PB - Springer CY - Munich ER - TY - CHAP A1 - Krämer, Stefan A1 - Raab, Peter A1 - Mottok, Jürgen A1 - Racek, Stanislav T1 - Comparison of Enhanced Markov Models and Discrete Event Simulation – for evaluation of probabilistic Faults in safety-critical real-time task sets T2 - Proceedings of EUROMICRO DSD 2014 - 17th Euromicro Conference on Digital System Design N2 - In this paper we present simulation and model based approaches for evaluating and validating the temporal and safety relevant properties of software intensive safety-critical real-time embedded systems. A high level reliability model of a safe task execution is described by a continuous-time Markov process, enhanced by the modeling of execution times. It is shown that the behavior - regarding real-time and safety metrics - of this theoretical model can be transferred into an abstract system timing model, which then can be analyzed by a discrete event simulation approach. The verification of the discrete event simulation by Markov models offers the possibility of a holistic approach for reliability analysis combined with schedulability analysis of complex safety-critical multicore real-time systems by the discrete event simulation. KW - Model KW - Stochastic simulation KW - reliability analysis KW - safe software processing KW - real-time operating system KW - multicore scheduling KW - discrete event simulation KW - fault injection Y1 - 2014 U6 - https://doi.org/10.1109/DSD.2014.42 SP - 591 EP - 598 ER - TY - GEN A1 - Krämer, Stefan T1 - Effects of Arbitrary Hardware Faults on Multicore Scheduling in Safety-critical Applications – Evaluation by enhanced Markov models and discrete event simulation T2 - 2014 PESW - The 2nd Prague Embedded Systems Workshop, June 2014 Y1 - 2014 UR - https://pesw.fit.cvut.cz/2014/presentations/pesw2014_Kramer.pdf ER - TY - CHAP A1 - Oklapi, Erna A1 - Deubzer, Michael A1 - Schmidhuber, Stefan A1 - Lalo, Erjola A1 - Mottok, Jürgen T1 - Optimization of Real-Time Multicore Systems Reached by a Genetic Algorithm Approach for Runnable Sequencing T2 - 2014 International Conference on Applied Electronics, Pilsen, Czech Republic N2 - The deployment of complex real-time systems with everyday increasing demands and possibilities, is a challenging task for engineers when performance and efficiency have to be maximized while cost have to be minimized at the same time. For already designed systems it became necessary to perform different modifications in order to find optimal software architecture configuration by respecting all timing constraints which are essential when speaking of real-time systems. In this work, we present a model-based approach of optimizing the execution sequence of runnables within tasks in order to reduce the system's reaction times by improving the overall signal flow duration. Hereby, a genetic optimization algorithm is used to create and evaluate multiple solutions for the runnable sequencing problem. We conclude by demonstration the efficiency of the presented approach with experimental results. KW - runnable sequencing KW - embedded real-time systems KW - genetic algorithms KW - multi-core KW - optimization Y1 - 2014 U6 - https://doi.org/10.1109/AE.2014.7011709 SP - 233 EP - 238 ER - TY - CHAP A1 - Oklapi, Erna A1 - Deubzer, Michael A1 - Schmidhuber, Stefan A1 - Mottok, Jürgen T1 - Verification of an Evolutionary Optimization Algorithm for Runnable Sequencing Problem T2 - 4th Applied Research Conference, 5th July 2014, Ingolstadt Y1 - 2014 ER - TY - CHAP A1 - Soska, Alexander A1 - Schumm, Michael A1 - Joseph, Saskia A1 - Reschke, Michael A1 - Mottok, Jürgen A1 - Niemetz, Michael A1 - Schroll-Decker, Irmgard T1 - Comparison of Frontal Lecture and Workshop Learning Arrangements in a Software Engineering Education Project T2 - 2014 IEEE Global Engineering Education Conference (EDUCON), Istanbul, Turkey N2 - The increase in complexity of software and its creation over the last decades requires an increase in the quality of the education of software engineering professionals. The number of Universities which answer this call by replacing or extending lectures with simulated software projects is constantly rising. However, the question how to best transfer new technological knowledge needed to be successful within this projects to the students remains open. Therefore this paper will present a comparison between the classical frontal lecture and a modern workshop learning arrangement used within these projects. By the use of workshops not only the knowledge transfer but also the acquisition of personal and social competences will be facilitated. Furthermore positive experiences with workshops at university level will support life-long learning. Y1 - 2014 U6 - https://doi.org/10.1109/EDUCON.2014.6826162 SP - 653 EP - 658 ER - TY - CHAP A1 - Soska, Alexander A1 - Mottok, Jürgen T1 - A New Conceptual Contribution for Serious Games in Academic Software Engineering Education T2 - European Conference on Software Engineering Education 2014 (ECSEE), 27 and 28 November 2014 in Seeon Monastery N2 - Nowadays, the popularity and field of application of serious games grows steadily. This educational method offers attractive pportunities for teaching and training by combining playful elements with learning content. By using game mechanics, thinking and technique, theoretical subject matters are treated in a fun and engaging way. Thereby, serious games utilize our intrinsic motivation to discover the surroundings in a playful manner. Embedded in educational settings, the goal is to mediate academic and non-academic knowledge to the students. Especially in the field of software engineering it is important to have skills which go beyond pure technical knowledge. Yet, the use of serious games is still a manageable amount. With this paper, we give a contribution to the theoretical design and development of serious games based on playful learning method and its relation to research-based learning in universal context. In addi- tion we analyze the existing serious games in software engineering and present our thoughts about planning our own. Y1 - 2014 UR - https://www.researchgate.net/publication/277266392_A_New_Conceptual_Contribution_for_Serious_Games_in_Academic_Software_Engineering_Education SN - 978-3-8440-3067-9 SP - 241 EP - 254 PB - Shaker CY - Aachen ER - TY - CHAP A1 - Krämer, Stefan A1 - Raab, Peter A1 - Mottok, Jürgen T1 - Simulationsbasierte Reliability-Analyse – Einflüsse von zufälligen Fehlern auf das Echtzeit-Scheduling T2 - Tagungsband 5th Embedded Software Engineering Kongress, 3. bis 7. Dezember 2012, Sindelfingen Y1 - 2012 SP - 613 EP - 622 ER - TY - CHAP A1 - Schumm, Michael A1 - Joseph, Saskia A1 - Mottok, Jürgen A1 - Niemetz, Michael A1 - Schroll-Decker, Irmgard T1 - Lernarrangements im software engineering und deren evaluation – neue konzepte für hochschule und lebenslanges Lernen T2 - Tagungsband 5th Embedded Software Engineering Kongress, 3. bis 7. Dezember 2012, Sindelfingen Y1 - 2012 ER - TY - CHAP A1 - Braun, Jürgen A1 - Mottok, Jürgen A1 - Miedl, Christian A1 - Geyer, Dirk A1 - Minas, Mark T1 - Increasing the reliability of single and multicore systems with software rejuvenation and coded processing T2 - Automotive Safety & Security 2012, Sicherheit und Zuverlässigkeit für automobile Informationstechnik, 14.-15. Nov. 2012, Karlsruhe N2 - The safety of electric vehicles has the highest priority because it helps contribute to customer confidence and thereby ensures further growth of the electromobility market. Therefore in series production redundant hardware concepts like dual core microcontrollers running in lock-step-mode are used to reach ASIL D safety requirements given from the ISO 26262. Coded processing is capable of reducing redundancy in hardware by adding diverse redundancy in software, e.g. by specific coding of data and instructions. A system with two coded processing channels is considered. One channel is active and one is in cold standby. When the active channel fails, the service is switched from the active channel to the standby channel. It is imaginable that the two channels with implemented coded processing are running with time redundancy on a single core or on a multi core system where for example different ASIL levels are partitioned on different cores. In this paper a redundant concept based on coded processing and software rejuvenation will be taken into account. Y1 - 2012 UR - https://dl.gi.de/handle/20.500.12116/17555 SP - 163 EP - 178 ER - TY - CHAP A1 - Alfranseder, Martin A1 - Mottok, Jürgen T1 - Kommunikationsmechanismen für sicherheitskritische multi-core Echtzeit-Systeme T2 - 5th Automotive Summerschool, Regensburg, September 2012 Y1 - 2012 ER - TY - CHAP A1 - Miedl, Christian A1 - Braun, Jürgen T1 - Powertrain and electric system design of a 800-volt all-electric car T2 - European Conference on Nanoelectronics and Embedded Systems for Electric Mobility, eMotion in Smart Cities, 24.-28. September, 2012, Bologna, Italy Y1 - 2012 ER - TY - CHAP A1 - Braun, Jürgen A1 - Mottok, Jürgen A1 - Miedl, Christian A1 - Geyer, Dirk A1 - Minas, Mark T1 - Capability of single hardware channel for automotive safety applications according to ISO 26262 T2 - 2012 International Conference on Applied Electronics (AE 2012), Pilsen, Czech Republic, 5 - 7 September 2012 Y1 - 2012 SN - 978-80-261-0038-6 SP - 41 EP - 45 ER - TY - CHAP A1 - Krämer, Stefan A1 - Raab, Peter A1 - Mottok, Jürgen A1 - Racek, Stanislav T1 - Reliability analysis of real-time scheduling by means of stochastic simulation T2 - 2012 International Conference on Applied Electronics (AE 2012), Pilsen, Czech Republic, 5 - 7 September 2012 N2 - 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. Y1 - 2012 SP - 151 EP - 156 ER - TY - CHAP A1 - Mottok, Jürgen A1 - Alfranseder, Martin A1 - Schmidhuber, Stefan A1 - Mucha, Matthias A1 - Sailer, Andreas ED - Teodorescu, Horia-Nicolai ED - Kirschenbaum, Alan ED - Cojocaru, Svetlana ED - Bruderlein, Claude T1 - How to improve the reactiveness and efficiency of embedded multicore systems by use of probabilistic simulation and optimization techniques T2 - Improving Disaster Resilience and Mitigation - New Means and Tools. NATO Science for Peace and Security Series C: Environmental Security N2 - Safe and reliable multi-core technology becomes more and more important in the field of embedded systems. Today’s and future embedded systems require increasing performance while being more energy efficient. Moreover, the functional safety for these embedded systems has to be improved or developed completely new. In this chapter, we first address the challenges of embedded multi-core real-time systems. To raise the resilience of such systems we use the deadlock-free synchronization model of Block et al. (A flexible real-time locking protocol for multiprocessors. 2012 IEEE international conference on embedded and real-time computing systems and applications, vol 0, pp 47–56, 2007). The metric mean Normalized Blocking Time (mNBT) is hereby used to measure the timing effects of the blocking behavior of strongly interacting tasks. In a second step, we present a model-based approach to map the tasks of an embedded real-time system to the cores of a multi-core processor. Moreover, we derive an execution time model from runtime measurements of software functions. This information is then used to perform precise probabilistic simulations of different task-to-core mappings and evaluate them with regard to task response times, inter-task blocking overhead and load distribution. Subsequently, we integrate the probabilistic simulation within an optimization technique to systematically improve the task-to-core mapping. We conclude with a case-study, where we demonstrate the effectiveness of the presented approach by optimizing the task-to-core mapping of a practical automotive powertrain system. KW - Embed System KW - Functional Safety KW - Arrival Curve KW - Task Allocation Problem KW - Deadline Violation Y1 - 2014 U6 - https://doi.org/10.1007/978-94-017-9136-6_16 SP - 253 EP - 268 PB - Springer CY - Dodrecht ER - TY - CHAP A1 - Krämer, Stefan A1 - Simsek, Erol A1 - Braun, Jürgen A1 - Deubzer, Michael A1 - Stingl, Armin A1 - Hobelsberger, Martin A1 - Mottok, Jürgen T1 - Mut zu Fehlern, um die Qualität zu steigern – Fault-Injection zur Steigerung der Zuverlässigkeit T2 - Tagungsband, 6th Embedded Software Engineering, Kongress 2013, 2. bis 6. Dezember 2013, Sindelfingen Y1 - 2013 SN - 978-3-8343-2408-5 SP - 577 EP - 585 ER - TY - CHAP A1 - Sailer, Andreas A1 - Schmidhuber, Stefan A1 - Deubzer, Michael A1 - Mottok, Jürgen T1 - Amalthea – Plattform für kontinuierliche, modellbasierte Entwicklung T2 - Tagungsband, 6th Embedded Software Engineering, Kongress 2013, 2. bis 6. Dezember 2013, Sindelfingen Y1 - 2013 SP - 538 EP - 544 ER - TY - CHAP A1 - Raab, Peter A1 - Racek, Stanislav A1 - Krämer, Stefan A1 - Mottok, Jürgen T1 - Data Flow Analysis of Software Executed by Unreliable Hardware T2 - 16th Euromicro Conference on Digital System Design, Los Alamitos, CA, USA N2 - The data flow is a crucial part of software execution in recent applications. It depends on the concrete implementation of the realized algorithm and it influences the correctness of a result in case of hardware faults during the calculation. In logical circuits, like arithmetic operations in a processor system, arbitrary faults become a more tremendous aspect in future. With modern manufacturing processes, the probability of such faults will increase and the result of a software's data flow will be more vulnerable. This paper shows a principle evaluation method for the reliability of a software's data flow with arbitrary soft errors also with the concept of fault compensation. This evaluation is discussed by means of a simple example based on an addition. KW - data flow KW - error probability KW - fault compensation KW - reliability analysis KW - software-implemented-hardwarefault-tolerance (SIHFT) Y1 - 2013 U6 - https://doi.org/10.1109/DSD.2013.35 SP - 243 EP - 249 ER - TY - CHAP A1 - Braun, Jürgen A1 - Mottok, Jürgen T1 - Fail-Safe and Fail-Operational Systems safeguarded with Coded Processing T2 - 2013 IEEE EUROCON - International Conference on Computer as a Tool, Zagreb, Croatia, July 1-4, 2013 N2 - Safety has the highest priority because it helps contribute to customer confidence and thereby ensures further growth of the new markets, like electromobility. Therefore in series production redundant hardware concepts like dual core microcontrollers running in lock-step-mode are used to reach for example ASIL D safety requirements given from the ISO 26262. Coded processing is capable of reducing redundancy in hardware by adding diverse redundancy in software, e.g. by specific coding of data and instructions. A system with two coded processing channels is considered. Both channels are active. When one channel fails, the service can be continued with the other channel. It is imaginable that the two channels with implemented coded processing are running with time redundancy on a single core or on a multi core system where for example different ASIL levels are partitioned on different cores. In this paper a redundancy concept based on coded processing will be taken into account. The improvement of the Mean Time To Failure by safeguarding the system with coded processing will be computed for fail-safe as well as for fail-operational systems. The use of the coded processing approach in safeguarding failsafe systems is proved. KW - fail-safe KW - fail-operational KW - fault-tolerant KW - failure probability KW - coded processing KW - Safely Embedded Software KW - SES KW - safety measure KW - ISO 26262 KW - electromobility KW - Mean Time To Failure KW - MTTF KW - reliability KW - diversity Y1 - 2013 SN - 978-1-4673-2231-7 U6 - https://doi.org/10.1109/EUROCON.2013.6625234 SP - 1878 EP - 1885 ER - TY - CHAP A1 - Raab, Peter A1 - Krämer, Stefan A1 - Mottok, Jürgen T1 - Error Model and the Reliability of Arithmetic Operations T2 - 2013 IEEE EUROCON - International Conference on Computer as a Tool, Zagreb, Croatia, July 1-4, 2013 N2 - Error detecting and correcting codes are widely used in data transmission, storage systems and also for data processing. In logical circuits like arithmetic operations, arbitrary faults can cause errors in the result. However in safety critical applications, it is important to avoid those errors which would lead to system failures. Several approaches are known to protect the result of operations during software processing. In the same way like transmission systems, coded processing uses codes for fault detection. But in contrast to transmission systems, there is no adequate channel model available which makes it possible to evaluate the residue error probability of an arithmetic operation in an analytical way. This paper tries to close the gap of arithmetic error models by the development of a model for an ordinary addition in a computer system. Thus, the reliability of an addition's result can be analytically evaluated. KW - addition KW - channel model KW - coded processing KW - fault simulation KW - Markov model KW - residue error probability Y1 - 2013 U6 - https://doi.org/10.1109/EUROCON.2013.6625047 SP - 630 EP - 637 ER - TY - CHAP A1 - Alfranseder, Martin A1 - Krapf, Tobias A1 - Mottok, Jürgen A1 - Siemers, Christian T1 - Synchronisationsverfahren in embedded Multicoresystemen T2 - Tagungsband, 6th Embedded Software Engineering, Kongress 2013, 2. bis 6. Dezembern 2013, Sindelfingen Y1 - 2013 PB - Vogel Business Media CY - Würzburg ER - TY - CHAP A1 - Alfranseder, Martin A1 - Mucha, Matthias A1 - Schmidhuber, Stefan A1 - Sailer, Andreas A1 - Niemetz, Michael A1 - Mottok, Jürgen T1 - A modified synchronization model for dead-lock free concurrent execution of strongly interacting task sets in embedded systems T2 - 2013 International Conference on Applied Electronics (AE 2013), IEEE, 10-12 September 2013, Pilsen, Czech Republic N2 - Global scheduling algorithms are very promising for application in embedded real-time systems using multi-core controllers. In this paper we want to make a first step forward to apply such scheduling methods on real existing systems. Especially a new resource model is necessary to avoid deadlocks, as this goal can not be achieved by using the standard OSEK Priority Ceiling Protocol when shared global resources are in use. We also introduce the new metric mean Normalized Blocking Time in order to be able to compare locking mechanisms according to the timing effects of their blocking behavior. Finally we give a simulative application example of the new metric by the use of two different kinds of semaphore models and an example task set typical for existing embedded real-time systems in the automotive powertrain environment. Y1 - 2013 VL - 18 SP - 13 EP - 18 ER - TY - GEN A1 - Alfranseder, Martin A1 - Schmidhuber, Stefan A1 - Mucha, Matthias A1 - Sailer, Andreas A1 - Mottok, Jürgen T1 - How to improve the reactiveness and efficiency of embedded multicore systems by use of probabilistic simulation and optimization techniques: A case study BT - Invited Poster Session T2 - Advanced Research Workshop: Improving Disaster Resilience and Mitigation - New Means and Tools, Trends, Iasi Y1 - 2013 ER - TY - RPRT A1 - Pfaller, M. A1 - Mottok, Jürgen T1 - Developing the e-learning class ‘practical training in c’ Y1 - 2013 ER - TY - CHAP A1 - Sailer, Andreas A1 - Schmidhuber, Stefan A1 - Deubzer, Michael A1 - Alfranseder, Martin A1 - Mucha, Matthias A1 - Mottok, Jürgen T1 - Optimizing the task allocation step for multi-core processors within autosar T2 - 2013 International Conference on Applied Electronics, IEEE, Pilsen, Czech Republic N2 - We present a model-based optimization approach for the task allocation problem in embedded multi-core systems. The information therefore is obtained from a system description in AUTOSAR and runtime measurements of the runnables in hardware traces. Based on this an initial software partitioning of runnables to tasks is created. We then use a genetic algorithm to create and evaluate solutions to the task allocation problem. Each solution is hereby evaluated using a discrete event-based simulation, which allows the evaluation with regard to real-time properties, resource consumption and data-communication overhead. The significance of our approach is then shown in a case-study. There, we optimize the task allocation of an embedded system, whose complexity is comparable to that of an actual system, on a multi-core processor. Finally, the results of the optimization are transferred to an ECU Configuration Description to enable further development in compliance with the AUTOSAR methodology. KW - AUTOSAR KW - Multi-Objective Optimization KW - Multi-Core KW - Goodness-of-fit KW - Task Allocation Y1 - 2013 UR - https://ieeexplore.ieee.org/document/6636524 ER - TY - JOUR A1 - Engelhardt, Lucas A1 - Melzner, Maximilian A1 - Havelkova, Linda A1 - Fiala, Pavel A1 - Christen, Patrik A1 - Dendorfer, Sebastian A1 - Simon, Ulrich T1 - A new musculoskeletal AnyBodyTM detailed hand model JF - Computer Methods in Biomechanics and Biomedical Engineering N2 - Musculoskeletal research questions regarding the prevention or rehabilitation of the hand can be addressed using inverse dynamics simulations when experiments are not possible. To date, no complete human hand model implemented in a holistic human body model has been fully developed. The aim of this work was to develop, implement, and validate a fully detailed hand model using the AnyBody Modelling System (AMS) (AnyBody, Aalborg, Denmark). To achieve this, a consistent multiple cadaver dataset, including all extrinsic and intrinsic muscles, served as a basis. Various obstacle methods were implemented to obtain with the correct alignment of the muscle paths together with the full range of motion of the fingers. These included tori, cylinders, and spherical ellipsoids. The origin points of the lumbrical muscles within the tendon of the flexor digitorum profundus added a unique feature to the model. Furthermore, the possibility of an entire patient-specific scaling based on the hand length and width were implemented in the model. For model validation, experimental datasets from the literature were used, which included the comparison of numerically calculated moment arms of the wrist, thumb, and index finger muscles. In general, the results displayed good comparability of the model and experimental data. However, the extrinsic muscles showed higher accordance than the intrinsic ones. Nevertheless, the results showed, that the proposed developed inverse dynamics hand model offers opportunities in a broad field of applications, where the muscles and joint forces of the forearm play a crucial role. KW - Musculoskeletal KW - hand KW - AnyBody KW - inverse dynamics KW - moment arm Y1 - 2020 U6 - https://doi.org/10.1080/10255842.2020.1851367 VL - 24 IS - 7 SP - 777 EP - 787 PB - Taylor & Francis ER - TY - JOUR A1 - Auer, Simon A1 - Kurbowitsch, Simone A1 - Süß, Franz A1 - Renkawitz, Tobias A1 - Krutsch, Werner A1 - Dendorfer, Sebastian T1 - Mental stress reduces performance and changes musculoskeletal loading in football-related movements JF - Science and Medicine in Football N2 - Purpose: Football players have a high risk of leg muscle injuries, especially when exposed to mental stress. Hence, this study investigated the musculoskeletal response of elite youth football players during highly dynamic movements under stress. The hypothesis is that mental stress reduces performance and changes the muscular forces exerted. Materials & methods: Twelve elite youth football players were subjected to mental stress while performing sports-specific change-of-direction movements. A modified version of the d2 attention test was used as stressor. The kinetics are computed using inverse dynamics. Running times and exerted forces of injury-prone muscles were analysed. Results: The stressor runs were rated more mentally demanding by the players (p = 0.006, rs = 0.37) with unchanged physical demand (p = 0.777, rs = 0.45). This resulted in 10% longer running times under stress (p < 0.001, d = −1.62). The musculoskeletal analysis revealed higher peak muscle forces under mental stress for some players but not for others. Discussion: The study shows that motion capture combined with musculoskeletal computation is suitable to analyse the effects of stress on athletes in highly dynamic movements. For the first time in football medicine, our data quantifies an association between mental stress with reduced football players’ performance and changes in muscle force. KW - Biomechanics KW - muscle injury KW - attention KW - musculoskeletal simulation Y1 - 2020 U6 - https://doi.org/10.1080/24733938.2020.1860253 VL - 5 IS - 4 SP - 323 EP - 329 PB - Taylor & Francis ER - TY - JOUR A1 - Scharfenberg, Georg A1 - Mottok, Jürgen A1 - Artmann, Christina A1 - Hobelsberger, Martin A1 - Paric, Ivan A1 - Großmann, Benjamin A1 - Pohlt, Clemens A1 - Wackerbarth, Alena A1 - Pausch, Uli A1 - Heidrich, Christiane A1 - Fadanelli, Martin A1 - Elsner, Michael A1 - Pöcher, Daniel A1 - Pittroff, Lenz A1 - Beer, Stefan A1 - Brückl, Oliver A1 - Haslbeck, Matthias A1 - Sterner, Michael A1 - Thema, Martin A1 - Muggenthaler, Nicole A1 - Lenck, Thorsten A1 - Götz, Philipp A1 - Eckert, Fabian A1 - Deubzer, Michael A1 - Stingl, Armin A1 - Simsek, Erol A1 - Krämer, Stefan A1 - Großmann, Benjamin A1 - Schlegl, Thomas A1 - Niedersteiner, Sascha A1 - Berlehner, Thomas A1 - Joblin, Mitchell A1 - Mauerer, Wolfgang A1 - Apel, Sven A1 - Siegmund, Janet A1 - Riehle, Dirk A1 - Weber, Joachim A1 - Palm, Christoph A1 - Zobel, Martin A1 - Al-Falouji, Ghassan A1 - Prestel, Dietmar A1 - Scharfenberg, Georg A1 - Mandl, Roland A1 - Deinzer, Arnulf A1 - Halang, W. A1 - Margraf-Stiksrud, Jutta A1 - Sick, Bernhard A1 - Deinzer, Renate A1 - Scherzinger, Stefanie A1 - Klettke, Meike A1 - Störl, Uta A1 - Wiech, Katharina A1 - Kubata, Christoph A1 - Sindersberger, Dirk A1 - Monkman, Gareth J. A1 - Dollinger, Markus A1 - Dembianny, Sven A1 - Kölbl, Andreas A1 - Welker, Franz A1 - Meier, Matthias A1 - Thumann, Philipp A1 - Swidergal, Krzysztof A1 - Wagner, Marcus A1 - Haug, Sonja A1 - Vernim, Matthias A1 - Seidenstücker, Barbara A1 - Weber, Karsten A1 - Arsan, Christian A1 - Schone, Reinhold A1 - Münder, Johannes A1 - Schroll-Decker, Irmgard A1 - Dillinger, Andrea Elisabeth A1 - Fuchshofer, Rudolf A1 - Monkman, Gareth J. A1 - Shamonin (Chamonine), Mikhail A1 - Geith, Markus A. A1 - Koch, Fabian A1 - Ühlin, Christian A1 - Schratzenstaller, Thomas A1 - Saßmannshausen, Sean Patrick A1 - Auchter, Eberhard A1 - Kriz, Willy A1 - Springer, Othmar A1 - Thumann, Maria A1 - Kusterle, Wolfgang A1 - Obermeier, Andreas A1 - Udalzow, Anton A1 - Schmailzl, Anton A1 - Hierl, Stefan A1 - Langer, Christoph A1 - Schreiner, Rupert ED - Baier, Wolfgang T1 - Forschungsbericht 2015 T3 - Forschungsberichte der OTH Regensburg - 2015 Y1 - 2015 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-13867 SN - 978-3-00-048589-3 CY - Regensburg ER - TY - JOUR A1 - Mauerer, Wolfgang A1 - Rexhepaj, Tanja A1 - Monkman, Gareth J. A1 - Sindersberger, Dirk A1 - Diermeier, Andreas A1 - Neidhart, Thomas A1 - Wolfrum, Dominik A1 - Sterner, Michael A1 - Heberl, Michael A1 - Nusko, Robert A1 - Maier, Georg A1 - Nagl, Klaus A1 - Reuter, Monika A1 - Hofrichter, Andreas A1 - Lex, Thomas A1 - Lesch, Florian A1 - Kieninger, Bärbel A1 - Szalo, Alexander Eduard A1 - Zehner, Alexander A1 - Palm, Christoph A1 - Joblin, Mitchell A1 - Apel, Sven A1 - Ramsauer, Ralf A1 - Lohmann, Daniel A1 - Westner, Markus A1 - Strasser, Artur A1 - Munndi, Maximilian A1 - Ebner, Lena A1 - Elsner, Michael A1 - Weiß, Nils A1 - Segerer, Matthias A1 - Hackenberg, Rudolf A1 - Steger, Sebastian A1 - Schmailzl, Anton A1 - Dostalek, Michael A1 - Armbruster, Dominik A1 - Koch, Fabian A1 - Hierl, Stefan A1 - Thumann, Philipp A1 - Swidergal, Krzysztof A1 - Wagner, Marcus A1 - Briem, Ulrich A1 - Diermeier, Andreas A1 - Spreitzer, Stefan A1 - Beiderbeck, Sabrina A1 - Hook, Christian A1 - Zobel, Martin A1 - Weber, Tim A1 - Groß, Simon A1 - Penzkofer, Rainer A1 - Dendorfer, Sebastian A1 - Schillitz, Ingo A1 - Bauer, Thomas A1 - Rudolph, Clarissa A1 - Schmidt, Katja A1 - Liebetruth, Thomas A1 - Hamer, Markus A1 - Haug, Sonja A1 - Vernim, Matthias A1 - Weber, Karsten A1 - Saßmannshausen, Sean Patrick A1 - Books, Sebastian A1 - Neuleitner, Nikolaus A1 - Rechenauer, Christian A1 - Steffens, Oliver A1 - Kusterle, Wolfgang A1 - Gömmel, Roland A1 - Wellnitz, Felix A1 - Stierstorfer, Johannes A1 - Stadler, Dominik A1 - Hofmann, Matthias J. A1 - Motschmann, Hubert A1 - Shamonin (Chamonine), Mikhail A1 - Bleicher, Veronika A1 - Fischer, Sebastian A1 - Hackenberg, Rudolf A1 - Horn, Anton A1 - Kawasch, Raphael A1 - Petzenhauser, Michael A1 - Probst, Tobias A1 - Udalzow, Anton A1 - Dams, Florian A1 - Schreiner, Rupert A1 - Langer, Christoph A1 - Prommesberger, Christian A1 - Ławrowski, Robert Damian ED - Baier, Wolfgang T1 - Forschungsbericht 2016 T3 - Forschungsberichte der OTH Regensburg - 2016 Y1 - 2016 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-13840 CY - Regensburg ER - TY - RPRT A1 - Talbot, Sebastian A1 - Hierl, Stefan A1 - Schmailzl, Anton ED - Baier, Wolfgang T1 - Thermische FEM-Simulation des Laser-Durchstrahlschweißens T2 - Forschungsbericht 2013 Y1 - 2014 UR - https://doi.org/10.35096/othr/pub-799 SP - 45 EP - 46 CY - Kiel ER - TY - JOUR A1 - Lautenschläger, Toni A1 - Leis, Alexander A1 - Dendorfer, Sebastian A1 - Palm, Christoph A1 - Schreiner, Rupert A1 - Langer, Christoph A1 - Prommesberger, Christian A1 - Ławrowski, Robert Damian A1 - Dams, Florian A1 - Bornmann, Benjamin A1 - Navitski, Aliaksandr A1 - Serbun, Pavel A1 - Müller, Günter A1 - Liebetruth, Thomas A1 - Kohlert, Dieter A1 - Pernsteiner, Jochen A1 - Schreier, Franz A1 - Heerklotz, Sabrina A1 - Heerklotz, Allwin A1 - Boos, Alexander A1 - Herwald, Dominik A1 - Monkman, Gareth J. A1 - Treiber, Daniel A1 - Mayer, Matthias A1 - Hörner, Eva A1 - Bentz, Alexander A1 - Shamonin (Chamonine), Mikhail A1 - Johansen, Søren Peter A1 - Reichel, Marco A1 - Stoll, Andrea A1 - Briem, Ulrich A1 - Dullien, Silvia A1 - Renkawitz, Tobias A1 - Weber, Tim A1 - Dendorfer, Sebastian A1 - Grifka, Joachim A1 - Penzkofer, Rainer A1 - Barnsteiner, K. A1 - Jovanovik, M. A1 - Wernecke, P. A1 - Vögele, A. A1 - Bachmann, T. A1 - Plötz, Martin A1 - Schliekmann, Claus A1 - Wels, Harald A1 - Helmberger, Paul A1 - Kaspar, Marcel A1 - Hönicka, M. A1 - Schrammel, Siegfried A1 - Enser, Markus A1 - Schmidmeier, Monika A1 - Schroll-Decker, Irmgard A1 - Haug, Sonja A1 - Gelfert, Verena A1 - Vernim, Matthias ED - Baier, Wolfgang T1 - Forschungsbericht 2012 T3 - Forschungsberichte der OTH Regensburg - 2012 Y1 - 2012 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-7834 CY - Regensburg ER - TY - JOUR A1 - Beimler, Josef A1 - Leißl, Caroline A1 - Ebner, Lena A1 - Elsner, Michael A1 - Mühlbauer, Gerhard A1 - Kohlert, Dieter A1 - Schubert, Martin J. W. A1 - Weiß, Andreas P. A1 - Sterner, Michael A1 - Raith, Thomas A1 - Afranseder, Martin A1 - Krapf, Tobias A1 - Mottok, Jürgen A1 - Siemers, Christian A1 - Großmann, Benjamin A1 - Höcherl, Johannes A1 - Schlegl, Thomas A1 - Schneider, Ralph A1 - Milaev, Johannes A1 - Rampelt, Christina A1 - Roduner, Christian A1 - Glowa, Christoph A1 - Bachl, Christoph A1 - Schliekmann, Claus A1 - Gnan, Alfons A1 - Grill, Martin A1 - Ruhland, Karl A1 - Piehler, Thomas A1 - Friers, Daniel A1 - Wels, Harald A1 - Pflug, Kenny A1 - Kucera, Markus A1 - Waas, Thomas A1 - Schlachetzki, Felix A1 - Boy, Sandra A1 - Pemmerl, Josef A1 - Leis, Alexander A1 - Welsch, Andreas F.X. A1 - Graf, Franz A1 - Zenger, Gerhard A1 - Volbert, Klaus A1 - Waas, Thomas A1 - Scherzinger, Stefanie A1 - Klettke, Meike A1 - Störl, Uta A1 - Heyl, C. A1 - Boldenko, A. A1 - Monkman, Gareth J. A1 - Kujat, Richard A1 - Briem, Ulrich A1 - Hierl, Stefan A1 - Talbot, Sebastian A1 - Schmailzl, Anton A1 - Ławrowski, Robert Damian A1 - Prommesberger, Christian A1 - Langer, Christoph A1 - Dams, Florian A1 - Schreiner, Rupert A1 - Valentino, Piergiorgio A1 - Romano, Marco A1 - Ehrlich, Ingo A1 - Furgiuele, Franco A1 - Gebbeken, Norbert A1 - Eisenried, Michael A1 - Jungbauer, Bastian A1 - Hutterer, Albert A1 - Bauhuber, Michael A1 - Mikrievskij, Andreas A1 - Argauer, Monika A1 - Hummel, Helmut A1 - Lechner, Alfred A1 - Liebetruth, Thomas A1 - Schumm, Michael A1 - Joseph, Saskia A1 - Reschke, Michael A1 - Soska, Alexander A1 - Schroll-Decker, Irmgard A1 - Putzer, Michael A1 - Rasmussen, John A1 - Dendorfer, Sebastian A1 - Weber, Tim A1 - Al-Munajjed, Amir Andreas A1 - Verkerke, Gijsbertus Jacob A1 - Renkawitz, Tobias A1 - Haug, Sonja A1 - Rudolph, Clarissa A1 - Zeitler, Annika A1 - Schaubeck, Simon A1 - Steffens, Oliver A1 - Rechenauer, Christian A1 - Schulz-Brize, Thekla A1 - Fleischmann, Florian A1 - Kusterle, Wolfgang A1 - Beer, Anne A1 - Wagner, Bernd A1 - Neidhart, Thomas ED - Baier, Wolfgang T1 - Forschungsbericht 2013 T3 - Forschungsberichte der OTH Regensburg - 2013 Y1 - 2014 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-7990 CY - Regensburg ER - TY - JOUR A1 - Altenbuchner, Amelie A1 - Haug, Sonja A1 - Weber, Karsten T1 - Die ersten Schritte nach einer hüftnahen Fraktur BT - Sensorbasierte Bewegungsexploration bei geriatrischen Traumapatient/-innen JF - Zeitschrift für Gerontologie und Geriatrie N2 - Nach einer Fraktur ist Mobilisierung Behandlungsziel und Therapiesäule. Das Festlegen von Outcomes basiert jedoch auf vielen Unsicherheiten, da Assessments nicht für alle Patient/-innen geeignet sind. Sie können agesabhängig beeinflusst und subjektiv geprägt sein. Sensorbasiertes Bewegungsmonitoring bietet eine Ergänzung zur Operationalisierung der Gehfähigkeit. Für Längsschnittuntersuchungen, die auch im häuslichen Umfeld durchgeführt werden, eignet sich die tägliche Schrittzahl als Variable. Sie kann durch einen handelsüblichen Fitnesstracker beobachtet werden. T2 - The first steps after a proximal femoral fracture: Sensor-based mobility exploration in geriatric trauma patients KW - Schrittzahlen KW - Rehabilitation KW - Mobilität KW - Motion-Tracker KW - Alterstraumatologie Y1 - 2021 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-14251 SN - 0948-6704 N1 - Corresponding author: Amelie Altenbuchner VL - 54 SP - 555 EP - 560 PB - Springer Nature ER - TY - CHAP A1 - Mottok, Jürgen A1 - Hagel, Georg A1 - Utesch, Matthias A1 - Waldherr, Franz T1 - Konstruktivistische Didaktik - ein Rezept für eine bessere Software Engineering Ausbildung? T2 - Proceedings of the 2nd Embedded Software Engineering Congress, 8. bis 10. Dezember 2009, Sindelfingen Y1 - 2009 SP - 601 EP - 610 ER - TY - CHAP A1 - Schmidt, Peter A1 - Mottok, Jürgen T1 - Memorandum der Bioagile Software- und Systementwicklung T2 - Proceedings of the 2nd Embedded Software Engineering Congress, 8. bis 10. Dezember 2009, Sindelfingen Y1 - 2009 SP - 487 EP - 497 ER - TY - CHAP A1 - Mottok, Jürgen A1 - Schiller, Frank T1 - Safely embedded software and MISRA C++: 2008 – a safety framework for c++ T2 - Proceedings of the SAFETY@SIEMENS Conference Y1 - 2008 ER - TY - CHAP A1 - Mottok, Jürgen A1 - Schiller, Frank T1 - MISRA C++:2008 and safely embedded software – a safety framework for C++ T2 - Proceedings of the Automotive Safety & Security Conference Y1 - 2008 UR - http://docplayer.org/53952332-Misra-c-2008-safely-embedded-software-ses.html ER - TY - CHAP A1 - Hobelsberger, Martin A1 - Mottok, Jürgen A1 - Dumke, Reiner T1 - Modellbasierte Sicherheitsanalysen von Software-Architekturen T2 - Embedded Software Engineering Kongress, Tagungsband ; 8. bis 10. Dezember 2008, Sindelfingen Y1 - 2008 SP - 436 EP - 443 ER - TY - CHAP A1 - Schmidt, Peter A1 - Mottok, Jürgen T1 - "Werkstattbericht" Bioagile Softwareentwicklung T2 - Embedded Software Engineering Kongress, Tagungsband ; 8. bis 10. Dezember 2008, Sindelfingen Y1 - 2008 SP - 455 EP - 460 ER - TY - CHAP A1 - Mottok, Jürgen T1 - Safely embedded software- a safety framework for c++ T2 - Proceedings of the 1st Embedded Software Engineering Conference, 8. bis 10. Dezember 2008, Sindelfingen Y1 - 2008 SP - 444 EP - 449 ER - TY - CHAP A1 - Mottok, Jürgen A1 - Schiller, Frank A1 - Völkl, Thomas A1 - Zeitler, Thomas T1 - A concept for a safe realization of a state machine in embedded automotive applications T2 - Computer safety, reliability, and security, 26th International Conference, SAFECOMP 2007, Nuremberg, Germany, September 18-21, 2007; proceedings N2 - Currently, both fail safe and fail operational architectures are based on hardware redundancy in automotive embedded systems. In contrast to this approach, safety is either a result of diverse software channels or of one channel of specifically coded software within the framework of Safely Embedded Software. Product costs are reduced and flexibility is increased. The overall concept is inspired by the well-known Vital Coded Processor approach. Since Mealy state machines are frequently used in embedded automotive systems, application software with a general Mealy state machine is realized differently with Safely Embedded Software starting from the high level programming language C with corresponding measurements. KW - Safely KW - Embedded Software KW - Safe State Machine KW - Diverse Instructions KW - Safety Code Weaving KW - Safety Supervisor Y1 - 2007 U6 - https://doi.org/10.1007/978-3-540-75101-4_2 SP - 283 EP - 288 ER - TY - JOUR A1 - Hobelsberger, Martin A1 - Mottok, Jürgen A1 - Kuntz, Stefan T1 - Architekturmodellierung: Vergleich von EAST ADL und SAE AADL JF - Hanser Automotive Y1 - 2007 IS - 7-8 SP - 43 EP - 47 ER - TY - JOUR A1 - Schiller, Frank A1 - Mottok, Jürgen A1 - Blum, M. A1 - Duckstein, F. A1 - Egen, R. A1 - Hummel, M. A1 - Mattes, T. T1 - Generische Safety-Architektur für KFZ-Software JF - Hanser automotive Y1 - 2006 SP - 52 EP - 54 ER - TY - GEN A1 - Renner, Sebastian A1 - Pozzobon, Enrico A1 - Mottok, Jürgen T1 - Current and Future Efforts in Benchmarking NIST LWC Ciphers T2 - 4th Lightweight Cryptography Workshop 2020 at NIST, Gaithersburg, USA Y1 - 2020 UR - https://csrc.nist.gov/CSRC/media/Presentations/efforts-in-benchmarking-lwc-ciphers/images-media/session-4-renner-current-future-benchmarking.pdf ER - TY - CHAP A1 - Schmid, Michael A1 - Fritz, Florian A1 - Mottok, Jürgen T1 - Parallel Programming in Real-Time Systems T2 - Architecture of computing systems - ARCS 2019, 32nd international conference, Copenhagen, Denmark, May 20-21, 2019, proceedings N2 - The enormous amounts of data modern real-time systems have to process lead to expensive, long-lasting calculations. In order to manage those computations in a timely manner, parallel task models have gained a lot of popularity lately. However, parallel programming can be very cumbersome and verbose. Other computationally intensive sectors have dealt with parallel computing for decades and have accumulated their experience in the development of parallel frameworks. Examples of well known parallel runtime systems are OpenMP, Intel Threading Building Blocks (TBB) and Microsoft Parallel Pattern Library (PPL). These runtime systems allow developers to enhance parallelism in their applications in a straightforward fashion. However, those parallel frameworks and the patternbased interfaces they provide might not be easily applicable in real-time systems. In this paper, we investigate the use of parallel programming frameworks in time-critical systems. On that account, we discuss considerations for the design of real-time applications that make use of such parallel runtime systems. Furthermore, we evaluate three library-based frameworks from different computing sectors, namely Intel Threading Building Blocks, Embedded Multicore Building Blocks (EMBB) and High Performance ParalleX (HPX), by conducting benchmarks of various parallel algorithms on an embedded multicore architecture. Y1 - 2019 UR - https://ieeexplore.ieee.org/abstract/document/8836206 PB - VDE-Verlag CY - Berlin ER - TY - RPRT A1 - Schillinger, Moritz A1 - Görlach, Julien A1 - Hierl, Stefan ED - Baier, Wolfgang T1 - Erstellung eines Konstruktionskatalogs für die additive Fertigung T2 - Forschung 2018 N2 - Die additive Fertigung bietet vielfältige Möglichkeiten hinsichtlich der Bauteilgestaltung. Jedoch sind auch bei den generativen Fertigungsverfahren konstruktive Randbedingungen zu beachten, um Bauteile kostengünstig und mit optimalen Eigenschaften herzustellen. Es ist bereits umfangreiche Fachliteratur erhältlich, die entsprechende Konstruktionsempfehlungen gibt. Um Produktentwickler bedarfsgerecht zu unterstützen, ist jedoch ein Nachschlagewerk erforderlich, das mit geeigneter Systematik Konstruktionsvorschläge ausgibt, die zur aktuellen Problemstellung passen. Aufbauend auf dem Stand der Technik, eigenen Analysen und experimentellen Untersuchungen werden erste Ansätze für ein solches Nachschlagewerk vorgestellt. KW - Rapid prototyping KW - Methodisches Konstruieren KW - Konstruktionskatalog Y1 - 2018 UR - https://doi.org/10.35096/othr/pub-1382 SP - 70 EP - 71 ER - TY - RPRT A1 - Hierl, Stefan ED - Baier, Wolfgang T1 - Forschungsschwerpunkte im Labor Lasermaterialbearbeitung T2 - Forschungsbericht 2017 N2 - Durch das Laserkunststoffschweißen können sowohl filigrane Nähte in der Mikrotechnik als auchtragfähige Verbindungen für Strukturbauteile hergestellt werden. In der Automotiv- oder der Medizintechnik-Industrie ist diese Fügetechnologie mittlerweile etabliert, jedoch sind die Anwen-dungsmöglichkeiten bei Weitem noch nicht ausgeschöpft. In kürzlich gestarteten Forschungsprojekten mit regionalen Industrieunternehmen und internationalen Forschungspartnern werden im Labor Lasermaterialbearbeitung weitere Potenziale gehoben. KW - Laserschweissen KW - Kunststoff Y1 - 2017 UR - https://doi.org/10.35096/othr/pub-1383 SP - 56 EP - 57 ER - TY - JOUR A1 - Weber, Karsten A1 - Dendorfer, Sebastian A1 - Süß, Franz A1 - Kubowitsch, Simone A1 - Schratzenstaller, Thomas A1 - Haug, Sonja A1 - Mohr, Christa A1 - Kiesl, Hans A1 - Drechsler, Jörg A1 - Westner, Markus A1 - Kobus, Jörn A1 - Schubert, Martin J. W. A1 - Zenger, Stefan A1 - Pietsch, Alexander A1 - Weiß, Josef A1 - Hinterseer, Sebastian A1 - Schieck, Roland A1 - Scherzinger, Stefanie A1 - Klettke, Meike A1 - Ringlstetter, Andreas A1 - Störl, Uta A1 - Bissyandé, Tegawendé F. A1 - Seeburger, Achim A1 - Schindler, Timo A1 - Ramsauer, Ralf A1 - Kiszka, Jan A1 - Kölbl, Andreas A1 - Lohmann, Daniel A1 - Mauerer, Wolfgang A1 - Maier, Johannes A1 - Scorna, Ulrike A1 - Palm, Christoph A1 - Soska, Alexander A1 - Mottok, Jürgen A1 - Ellermeier, Andreas A1 - Vögele, Daniel A1 - Hierl, Stefan A1 - Briem, Ulrich A1 - Buschmann, Knut A1 - Ehrlich, Ingo A1 - Pongratz, Christian A1 - Pielmeier, Benjamin A1 - Tyroller, Quirin A1 - Monkman, Gareth J. A1 - Gut, Franz A1 - Roth, Carina A1 - Hausler, Peter A1 - Bierl, Rudolf A1 - Prommesberger, Christian A1 - Ławrowski, Robert Damian A1 - Langer, Christoph A1 - Schreiner, Rupert A1 - Huang, Yifeng A1 - She, Juncong A1 - Ottl, Andreas A1 - Rieger, Walter A1 - Kraml, Agnes A1 - Poxleitner, Thomas A1 - Hofer, Simon A1 - Heisterkamp, Benjamin A1 - Lerch, Maximilian A1 - Sammer, Nike A1 - Golde, Olivia A1 - Wellnitz, Felix A1 - Schmid, Sandra A1 - Muntschick, Claudia A1 - Kusterle, Wolfgang A1 - Paric, Ivan A1 - Brückl, Oliver A1 - Haslbeck, Matthias A1 - Schmidt, Ottfried A1 - Schwanzer, Peter A1 - Rabl, Hans-Peter A1 - Sterner, Michael A1 - Bauer, Franz A1 - Steinmann, Sven A1 - Eckert, Fabian A1 - Hofrichter, Andreas ED - Baier, Wolfgang T1 - Forschungsbericht 2017 T3 - Forschungsberichte der OTH Regensburg - 2017 KW - Forschung KW - Forschungsbericht Y1 - 2017 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-13835 SN - 978-3-9818209-3-5 CY - Regensburg ER - TY - JOUR A1 - Broser, Christian A1 - Falter, Thomas A1 - Ławrowski, Robert Damian A1 - Altenbuchner, Amelie A1 - Vögele, Daniel A1 - Koss, Claus A1 - Schlamp, Matthias A1 - Dunnweber, Jan A1 - Steffens, Oliver A1 - Heckner, Markus A1 - Jaritz, Sabine A1 - Schiegl, Thomas A1 - Corsten, Sabine A1 - Lauer, Norina A1 - Guertler, Katherine A1 - Koenig, Eric A1 - Haug, Sonja A1 - Huber, Dominik A1 - Birkenmaier, Clemens A1 - Krenkel, Lars A1 - Wagner, Thomas A1 - Justus, Xenia A1 - Saßmannshausen, Sean Patrick A1 - Kleine, Nadine A1 - Weber, Karsten A1 - Braun, Carina N. A1 - Giacoppo, Giuliano A1 - Heinrich, Michael A1 - Just, Tobias A1 - Schreck, Thomas A1 - Schnabl, Andreas A1 - Gilmore, Amador Téran A1 - Roeslin, Samuel A1 - Schmid, Sandra A1 - Wellnitz, Felix A1 - Malz, Sebastian A1 - Maurial, Andreas A1 - Hauser, Florian A1 - Mottok, Jürgen A1 - Klettke, Meike A1 - Scherzinger, Stefanie A1 - Störl, Uta A1 - Heckner, Markus A1 - Bazo, Alexander A1 - Wolff, Christian A1 - Kopper, Andreas A1 - Westner, Markus A1 - Pongratz, Christian A1 - Ehrlich, Ingo A1 - Briem, Ulrich A1 - Hederer, Sebastian A1 - Wagner, Marcus A1 - Schillinger, Moritz A1 - Görlach, Julien A1 - Hierl, Stefan A1 - Siegl, Marco A1 - Langer, Christoph A1 - Hausladen, Matthias A1 - Schreiner, Rupert A1 - Haslbeck, Matthias A1 - Kreuzer, Reinhard A1 - Brückl, Oliver A1 - Dawoud, Belal A1 - Rabl, Hans-Peter A1 - Gamisch, Bernd A1 - Schmidt, Ottfried A1 - Heberl, Michael A1 - Gänsbauer, Bianca A1 - Bick, Werner A1 - Ellermeier, Andreas A1 - Monkman, Gareth J. A1 - Prem, Nina A1 - Sindersberger, Dirk A1 - Tschurtschenthaler, Karl A1 - Aurbach, Maximilian A1 - Dendorfer, Sebastian A1 - Betz, Michael A. A1 - Szecsey, Tamara A1 - Mauerer, Wolfgang A1 - Murr, Florian ED - Baier, Wolfgang T1 - Forschung 2018 T3 - Forschungsberichte der OTH Regensburg - 2018 KW - Forschung KW - Forschungsbericht Y1 - 2018 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:bvb:898-opus4-13826 SN - 978-3-9818209-5-9 CY - Regensburg ER - TY - CHAP A1 - Hauser, Florian A1 - Schreistetter, Stefan A1 - Reuter, Rebecca A1 - Mottok, Jürgen A1 - Gruber, Hans A1 - Holmqvist, Kenneth A1 - Schorr, Nick T1 - Code reviews in C++: Preliminary results from an eye tracking study T2 - ETRA '20 Short Papers: ACM Symposium on Eye Tracking Research and ApplicationsJune 2020 N2 - Code reviews are an essential part of quality assurance in modern software projects. But despite their great importance, they are still carried out in a way that relies on human skills and decisions. During the last decade, there have been several publications on code reviews using eye tracking as a method, but only a few studies have focused on the performance differences between experts and novices. To get a deeper understanding of these differences, the following experiment was developed: This study surveys expertise-related differences in experts’, advanced programmers’, and novices’ eye movements during the review of eight short C++ code examples, including correct and erroneous codes. A sample of 35 participants (21 novices, 14 advanced and expert programmers) were recruited. A Tobii Spectrum 600 was used for the data collection. Measures included participants’ eye movements during the code review, demographic background data, and cued retrospective verbal comments on replays of their own eye movement recordings. Preliminary results give proof for experience-related differences between participants. Advanced and expert programmers performed significantly better in case of error detection and the eye tracking data implies a more efficient reviewing strategy. Y1 - 2020 SN - ISBN 9781450371346 U6 - https://doi.org/10.1145/3379156.3391980 SP - 1 EP - 5 ER -