SC Harvester Papers Database Interface

Trajectory tracking and stabilisation of a riderless bicycle*

N. Persson, Martin C. Ekström, M. Ekström, A. Papadopoulos. In: 2021 IEEE International Intelligent Transportation Systems Conference (ITSC). 2021

Abstract: Trajectory tracking for an autonomous bicycle is considered in this paper. The trajectory tracking controller is designed using a Model Predictive Controller with constraints on the lean, steer, and heading angle as well as the position coordinates of the bicycle. The output from the trajectory tracking controller is the desired lean angle and forward velocity. Furthermore, a PID controller is des...

How to Analyze the Safety of Concepts for a System-of-Systems?

Stephan Baumgart, Joakim Froberg, S. Punnekkat. In: 2021 IEEE International Symposium on Systems Engineering (ISSE). 2021

Abstract: Developing safety-critical products like cars, trains, or airplanes requires rigor in following development processes, and evidence for product safety must be collected. Safety needs to be considered during each development step and traced through the development life cycle. The current standards and approaches focus on single human-operated products. The technical evolution enables integrating ex...

Mapping the structure and evolution of software testing research over the past three decades

Alireza Salahirad, Gregory Gay, Ehsan Mohammadi. In: J. Syst. Softw.. 2021

Abstract: Background: The field of software testing is growing and rapidly-evolving. Aims: Based on keywords assigned to publications, we seek to identify predominant research topics and understand how they are connected and have evolved. Method: We apply co-word analysis to map the topology of testing research as a network where author-assigned keywords are connected by edges indicating co-occurrence in pu...

Postnatal Sox6 Regulates Synaptic Function of Cortical Parvalbumin-Expressing Neurons

H. Munguba, B. Chattopadhyaya, S. Nilsson, J. Carriço, Fatima Memic et al. In: The Journal of Neuroscience. 2021

Abstract: Cortical parvalbumin-expressing (Pvalb+) neurons provide robust inhibition to neighboring pyramidal neurons, crucial for the proper functioning of cortical networks. This class of inhibitory neurons undergoes extensive synaptic formation and maturation during the first weeks after birth and continue to dynamically maintain their synaptic output throughout adulthood. While several transcription fac...

Self-adapting Industrial Augmented Reality Applications with Proactive Dynamic Software Product Lines

I. Ayala, M. Amor, L. Fuentes, A. Papadopoulos. In: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA ). 2021

Abstract: Industrial Augmented Reality (IAR) is a key enabling technology for Industry 4.0. However, its adoption poses several challenges because it requires the execution of computing-intensive tasks in devices with poor computational resources, which contributes to a faster draining of the device batteries. Proactive self-adaptation techniques could overcome these problems that affect the quality of expe...

REACT: Enabling Real-Time Container Orchestration

Václav Struhár, Silviu S. Craciunas, M. Ashjaei, M. Behnam, A. Papadopoulos. In: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA ). 2021

Abstract: Fog and edge computing offer the flexibility and decentralized architecture benefits of cloud computing without suffering from the latency issues inherent in the cloud. This makes fog computing very attractive in real-time and safety-critical applications, especially if combined with container-based technologies. Whereas different orchestration systems are available to manage the container placeme...

Installation Order in Automatic Fabrication of Reinforcement Rebar Cages

Johan Relefors, Mahdi Momeni, Lars Pettersson, A. Papadopoulos, Thomas Nolte. In: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA ). 2021

Abstract: Despite the significant development of automation in the manufacturing industry, the construction industry has not yet comparably gained much from automated processes. Fabrication of reinforcement rebar cages is one good example where automation has a limited application. Several challenges have to be tackled to introduce and take advantage of the automatic fabrication of reinforcement rebar cages...

LETRA: Mapping Legacy Ethernet-Based Traffic into TSN Traffic Classes

D. Mateu, M. Ashjaei, A. Papadopoulos, J. Proenza, Thomas Nolte. In: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA ). 2021

Abstract: This paper proposes a method to efficiently map the legacy Ethernet-based traffic into Time Sensitive Networking (TSN) traffic classes considering different traffic characteristics. Traffic mapping is one of the essential steps for industries to gradually move towards TSN, which in turn significantly mitigates the management complexity of industrial communication systems. In this paper, we first i...

Scheduling Elastic Applications in Compositional Real-Time Systems

S. Salman, S. Mubeen, Filip Marković, A. Papadopoulos, Thomas Nolte. In: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA ). 2021

Abstract: Many real-time applications have functional behaviour that requires variability in timing properties at runtime. The elastic task model provides a convenient mechanism to specify and encapsulate such variability and enables the modification of an application's periods during run-time to keep the application schedulable. Additionally, reservation-based scheduling techniques were proposed for the sa...

A Questionnaire Study on the Use of Access Control in Industrial Systems

B. Leander, Aida Čaušević, Tomas Lindström, Hans A. Hansson. In: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA ). 2021

Abstract: Industrial systems have traditionally been kept isolated from external networks. However, business benefits are pushing for a convergence between the industrial systems and new information technology environments such as cloud computing, as well as higher level of connectivity between different systems. This makes cybersecurity a growing concern for industrial systems. In strengthening security, a...

Using UPPAAL to Verify Recovery in a Fault-tolerant Mechanism Providing Persistent State at the Edge

Z. Bakhshi, G. Rodríguez-Navas, Hans A. Hansson. In: 2021 26th IEEE International Conference on Emerging Technologies and Factory Automation (ETFA ). 2021

Abstract: In our previous work we proposed a fault-tolerant persistent storage for container-based fog architecture. We leveraged the use of containerization to provide storage as a containerized application working along with other containers. As a fault-tolerance mechanism we introduced a replicated data structure and to solve consistency issue between the replicas distributed in the cluster of nodes, we ...

Requirements-driven reuse recommendation

Muhammad Abbas, Mehrdad Saadatmand, Eduard Paul Enoiu. In: Proceedings of the 25th ACM International Systems and Software Product Line Conference - Volume A. 2021

Abstract: This tutorial explores requirements-based reuse recommendation for product line assets in the context of clone-and-own product lines....

Open Data Ecosystems - an empirical investigation into an emerging industry collaboration concept

P. Runeson, Thomas Olsson, Johan Linåker. In: J. Syst. Softw.. 2021

Abstract: Software systems are increasingly depending on data, particularly with the rising use of machine learning, and developers are looking for new sources of data. Open Data Ecosystems (ODE) is an emerging concept for data sharing under public licenses in software ecosystems, similar to Open Source Software (OSS). It has certain similarities to Open Government Data (OGD), where public agencies share da...

Won’t Somebody Please Think of the Tests? A Grounded Theory Approach to Industry Challenges in Continuous Practices

Daniel Ståhl, Torvald Mårtensson. In: 2021 47th Euromicro Conference on Software Engineering and Advanced Applications (SEAA). 2021

Abstract: Continuous integration and delivery are well-established paradigms in the software development community. With these continuous practices come many challenges; while some of these challenges are immediate and well documented in literature, others may be revealed only after sustained application of these practices in large-scale and complex contexts. Based on researcher observations and interviews ...

The MaLET Model — Maturity Levels for Exploratory Testing

Torvald Mårtensson, Daniel Ståhl, A. Martini, J. Bosch. In: 2021 47th Euromicro Conference on Software Engineering and Advanced Applications (SEAA). 2021

Abstract: Based on multiple series of interviews and workshops, this paper presents the MaLET model – a representation of the typical evolution path for companies who successfully adopt exploratory testing. The model provides a step-by-step approach to systematically improve exploratory testing over time, and shows how and why capabilities may regress. The MaLET model was validated through a series of inter...