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Publications (10 of 87) Show all publications
Rylander, D., Axelsson, J., Wallin, P. & Cedergren, S. (2024). Characteristics and models for energy improvements of cyclic transport operations in mining. International Journal of Mining and Mineral Engineering, 15(5), 1-22
Open this publication in new window or tab >>Characteristics and models for energy improvements of cyclic transport operations in mining
2024 (English)In: International Journal of Mining and Mineral Engineering, ISSN 1754-890X, E-ISSN 1754-8918, Vol. 15, no 5, p. 1-22Article in journal (Refereed) Published
Abstract [en]

There is a large potential for automation and optimisation of transports within quarrying and mining, but operational models and characteristics for this purpose are lacking. This paper aims to provide insight into cyclic transports and the parameters that affect energy consumption and productivity. Detailed operational data from machines has been collected and analysed through automatic logging of the machine’s internal communication network. The paper presents and discusses the characteristics of the operation identified, develops models for energy consumption and productivity, and discusses their relation for optimisation and automation purposes. A conclusion is that stochastic fluctuations in activity times need continuous real-time control for an optimisation system to be effective. The method used in the paper resulted in regression models for cycle energy cost and hauler fuel rate, which provide both correlation and significance, which is promising for future validation and use in energy optimisation control systems.

Place, publisher, year, edition, pages
InderScience Publishers, 2024
Keywords
AMG, automated machine guidance, cyclic transport operations, energy improvements, energy model, energy optimisation, fleet optimisation, fuel model, lean construction, mining characteristics, surface mining, transport optimisation, Continuous time systems, Fleet operations, Surface mine transportation, Automated machines, Cyclic transport operation, Energy, Energy improvement, Energy optimization, Fleet optimization, Mining characteristic, Optimisations, Transport operations, Transport optimization, Stochastic control systems
National Category
Other Civil Engineering
Identifiers
urn:nbn:se:mdh:diva-69834 (URN)10.1504/IJMME.2024.143780 (DOI)2-s2.0-85214555655 (Scopus ID)
Available from: 2025-01-24 Created: 2025-01-24 Last updated: 2025-01-24Bibliographically approved
Martin, J., Axelsson, J., Carlson, J. & Suryadevara, J. (2024). Decisions supported by Core Ontology for Mission and Capabilities in Systems of Systems. In: : . Paper presented at The 18th Annual International Systems Conference (SysCon), Montreal, Canada, 15-18 April, 2024.
Open this publication in new window or tab >>Decisions supported by Core Ontology for Mission and Capabilities in Systems of Systems
2024 (English)Conference paper, Published paper (Refereed)
National Category
Engineering and Technology Computer Systems
Identifiers
urn:nbn:se:mdh:diva-67580 (URN)
Conference
The 18th Annual International Systems Conference (SysCon), Montreal, Canada, 15-18 April, 2024
Available from: 2024-06-17 Created: 2024-06-17 Last updated: 2024-06-17Bibliographically approved
Martin, J., Axelsson, J., Carlson, J. & Suryadevara, J. (2024). Decisions Supported by the Core Ontology for Missions and Capabilities in Systems of Systems. In: SysCon 2024 - 18th Annual IEEE International Systems Conference, Proceedings: . Paper presented at SysCon 2024 - 18th Annual IEEE International Systems Conference, Montreal, Canada, 15-18th April, 2024. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Decisions Supported by the Core Ontology for Missions and Capabilities in Systems of Systems
2024 (English)In: SysCon 2024 - 18th Annual IEEE International Systems Conference, Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2024Conference paper, Published paper (Refereed)
Abstract [en]

This study explores how a core ontology for missions and capabilities in systems of systems supports basic and fundamental decisions related to development and operations of systems of systems. The study is based on a previously developed core ontology for mission and capability in the context of systems of systems. From the relationships in the core ontology concepts, this study extracts fundamental design and operational decisions. These decisions are compiled into a preliminary guideline aimed at assessing the feasibility of systems of systems. This compilation uses Kipling's six honest serving men's reasoning to support clustering of decisions based on their intended outcome. The study identifies categories of generic constraints that affect these decisions. The overall aim is that the clustered decisions and the constraint categories should trigger different points of views for designers and operators as they envision their systems of systems and constituent systems. The preliminary guideline developed is then used to illustrate a road paving system, and different ways of using the guideline are discussed. The tool demonstrates flexibility, therefore setting a good starting point for brainstorming and exploration of systems of systems design and operations.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2024
Keywords
constraints, core ontology, decisions, systems of systems, System of systems, Constraint, Decision, Design decisions, Development and operations, Fundamental design, Ontology concepts, Ontology's, System-of-systems, Systems support, Ontology
National Category
Computer Sciences
Identifiers
urn:nbn:se:mdh:diva-68045 (URN)10.1109/SysCon61195.2024.10553485 (DOI)2-s2.0-85197350438 (Scopus ID)9798350358803 (ISBN)
Conference
SysCon 2024 - 18th Annual IEEE International Systems Conference, Montreal, Canada, 15-18th April, 2024
Available from: 2024-07-12 Created: 2024-07-12 Last updated: 2024-07-12Bibliographically approved
Martin, J. (2024). Evaluation of the Core Ontology for Missions and Capabilities in Systems of Systems.
Open this publication in new window or tab >>Evaluation of the Core Ontology for Missions and Capabilities in Systems of Systems
2024 (English)Report (Other (popular science, discussion, etc.))
National Category
Engineering and Technology
Identifiers
urn:nbn:se:mdh:diva-67582 (URN)
Available from: 2024-06-17 Created: 2024-06-17 Last updated: 2024-06-19Bibliographically approved
Bucaioni, A., Axelsson, J. & Behnam, M. (2024). Knowledge Review on Digital Twins for Essential Services. Mälardalens universitet
Open this publication in new window or tab >>Knowledge Review on Digital Twins for Essential Services
2024 (English)Report (Other academic)
Abstract [en]

The purpose of the study was to investigate the application of Digital Twins (DTs) in sectors critical to societal functions

Place, publisher, year, edition, pages
Mälardalens universitet, 2024
National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-68493 (URN)
Available from: 2024-09-20 Created: 2024-09-20 Last updated: 2024-09-20Bibliographically approved
Axelsson, J. (2024). Mediators in Systems-of-Systems and Ecosystems: A Systematic Literature Review and Conceptualization. In: Proceedings - 2024 IEEE/ACM 12th International Workshop on Software Engineering for Systems-of-Systems and Software Ecosystems, SESoS 2024: . Paper presented at 12th International Workshop on Software Engineering for Systems-of-Systems and Software Ecosystems, SESoS 2024, in conjunction with the 46th IEEE/ACM International Conference on Software Engineering, ICSE 2024, Lisbon, April 14, 2024 (pp. 21-28). Association for Computing Machinery, Inc
Open this publication in new window or tab >>Mediators in Systems-of-Systems and Ecosystems: A Systematic Literature Review and Conceptualization
2024 (English)In: Proceedings - 2024 IEEE/ACM 12th International Workshop on Software Engineering for Systems-of-Systems and Software Ecosystems, SESoS 2024, Association for Computing Machinery, Inc , 2024, p. 21-28Conference paper, Published paper (Refereed)
Abstract [en]

In most systems-of-systems (SoS) and ecosystems, peer-to-peer relations are insufficient to provide the desired emergent behavior, but the support of mediators is necessary. Mediators are elements that facilitate the collaboration between the constituents of the SoS or ecosystem, without having a role outside it. The topic has previously been studied in the SoS field, mainly from a software engineering perspective, and separately also in research on software, business, and innovation ecosystems. This paper presents a systematic literature review on mediators across scholarly work in SoS as well as ecosystems. It identifies mediator functionality and implementation concerns, and discusses alternative terminology. Based on findings from the literature, a suggestion for an improved conceptualization is presented, which also includes the information, processing and interactions involved in the mediation.

Place, publisher, year, edition, pages
Association for Computing Machinery, Inc, 2024
Keywords
business ecosystems, innovation ecosystems, mediators, software ecosystems, systems-of-systems, Business ecosystem, Emergent behaviours, Engineering perspective, Innovation ecosystem, Mediator, Peer to peer, Software innovations, System-of-systems, Systematic literature review, Decentralized systems
National Category
Computer and Information Sciences
Identifiers
urn:nbn:se:mdh:diva-68347 (URN)10.1145/3643655.3643880 (DOI)001293142100004 ()2-s2.0-85201677298 (Scopus ID)9798400705571 (ISBN)
Conference
12th International Workshop on Software Engineering for Systems-of-Systems and Software Ecosystems, SESoS 2024, in conjunction with the 46th IEEE/ACM International Conference on Software Engineering, ICSE 2024, Lisbon, April 14, 2024
Available from: 2024-09-05 Created: 2024-09-05 Last updated: 2024-09-26Bibliographically approved
Belay, Z. M., Axelsson, J., Jee, E. & Bae, D.-H. (2024). Policy-Guided Collaboration for Enhancing System of Systems Goal Achievement. In: SysCon 2024 - 18th Annual IEEE International Systems Conference, Proceedings: . Paper presented at SysCon 2024 - 18th Annual IEEE International Systems Conference, Montreal, Canada, 15-18th April, 2024. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Policy-Guided Collaboration for Enhancing System of Systems Goal Achievement
2024 (English)In: SysCon 2024 - 18th Annual IEEE International Systems Conference, Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2024Conference paper, Published paper (Refereed)
Abstract [en]

In its broadest sense, collaboration can be defined as a united effort to accomplish activities that ultimately lead to the achievement of shared objectives. This requires the sharing of information, planning, risks, and rewards between collaborating entities to a certain extent. In the case of systems of systems (SoS) where diverse and autonomous constituent systems (CS) interact to achieve shared goals, collaboration presents multifaceted challenges resulting from its distinct characteristics, including interconnectedness among the CS, heterogeneity, scalability concerns, dynamic environments, emergent behavior, stakeholder alignment challenges, and intricate decision-making processes. In order to enhance the achievement of the SoS goals, we propose a policy-guided collaboration approach. In this regard, we establish a learning-based policy generation process with the goal of guiding the decision-making behavior of CS. The practicality of the proposed approach is illustrated through a focused analysis of a high-rise building fire incident response system. Based on simulation results, the proposed approach performs better than the conventional approach in terms of SoS specific task completion time, performance with changes in simulation inputs, and efficiency. We also conducted a sensitivity analysis of task completion time by varying independent decision variables such as the number of CS instances and the size of collaborative tasks.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2024
Keywords
collaborative decision making, policy generation, Policy-guided collaboration, system of systems engineering, Sensitivity analysis, System of systems, Tall buildings, Decision-making process, Dynamic environments, Emergent behaviours, Goals achievement, System-of-systems, Task completion time, Decision making
National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-68048 (URN)10.1109/SysCon61195.2024.10553439 (DOI)001259228200019 ()2-s2.0-85197352858 (Scopus ID)9798350358803 (ISBN)
Conference
SysCon 2024 - 18th Annual IEEE International Systems Conference, Montreal, Canada, 15-18th April, 2024
Available from: 2024-07-12 Created: 2024-07-12 Last updated: 2024-08-07Bibliographically approved
Pettersson, M., Axelsson, J., Johansson, A. & Svenson, P. (2024). Risk Analysis for System of Systems Management: The Swedish COVID-19 Management Case. In: SysCon 2024 - 18th Annual IEEE International Systems Conference, Proceedings: . Paper presented at SysCon 2024 - 18th Annual IEEE International Systems Conference, Montreal, Canada, 15-18th April, 2024. Institute of Electrical and Electronics Engineers (IEEE)
Open this publication in new window or tab >>Risk Analysis for System of Systems Management: The Swedish COVID-19 Management Case
2024 (English)In: SysCon 2024 - 18th Annual IEEE International Systems Conference, Proceedings, Institute of Electrical and Electronics Engineers (IEEE), 2024Conference paper, Published paper (Refereed)
Abstract [en]

A socio-technical system of systems (SoS) is a collaboration of independently operated and managed systems. These constituent systems join the SoS to work together for a common goal: to achieve positive emergent behaviors such as greater capability, efficiency, resource utilization, reliability, and robustness. To achieve such a goal, an SoS needs to be well-managed with mitigation plans for all system risks. However, existing risk management strategies were developed for individual, non-integrated systems and are therefore inadequate for use with SoS. This paper uses the COVID-19 pandemic in Sweden as a case study for exploring risk analysis for SoS management. We performed a risk analysis of this SoS based on STAMP (System-Theoretical Accident Model and Processes), an existing method from the safety domain, as part of developing a preliminary risk analysis process for practitioners. Preliminary results reveal that extended SoS structures, uncertainty-driven decision-making, emerging behavior, and changes in trust, policy, and legislation pose significant challenges. The study's contribution is that our findings provide a knowledge base to act as a guide for risk management of SoS. Applying a method for safety analysis to crisis management also extends the body of knowledge on methods for SoS risk analysis.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers (IEEE), 2024
Keywords
COVID-19, Crisis Management, Risk Analysis, Risk Management, SoS Management, Decision making, Knowledge based systems, Risk assessment, Safety engineering, System of systems, Emergent behaviours, Resources utilizations, Risks management, Sociotechnical systems, Swedishs, System of system management, System risk, System-of-systems, Systems management
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-68050 (URN)10.1109/SysCon61195.2024.10553576 (DOI)001259228200100 ()2-s2.0-85197335985 (Scopus ID)9798350358803 (ISBN)
Conference
SysCon 2024 - 18th Annual IEEE International Systems Conference, Montreal, Canada, 15-18th April, 2024
Available from: 2024-07-12 Created: 2024-07-12 Last updated: 2024-08-07Bibliographically approved
Pettersson, M., Axelsson, J., Johansson, A. & Svenson, P. (2024). Systems of Systems Management and Governance from a Risk-Handling Perspective. In: 2024 19th Annual System of Systems Engineering Conference, SoSE 2024: . Paper presented at 19th International IEEE Conference on System of Systems Engineering, SoSE, Tacoma, June 23-26, 2024 (pp. 18-23). Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>Systems of Systems Management and Governance from a Risk-Handling Perspective
2024 (English)In: 2024 19th Annual System of Systems Engineering Conference, SoSE 2024, Institute of Electrical and Electronics Engineers Inc. , 2024, p. 18-23Conference paper, Published paper (Refereed)
Abstract [en]

Managing a system can be critical for its successful functioning. This is especially crucial for the socio-technical systems of systems (SoS) that characterize many of modern society's critical operations. However, the management of SoS becomes complex as systems are increasingly interconnected and the dependence among connected systems intensifies. This paper explores the current state of the art on SoS management and governance from a risk management perspective. Our findings show a higher focus on SoS management; however, many studies do not holistically deal with the SoS. Moreover, our findings indicate fewer studies in SoS governance. Hence there is still a research gap. The study contributes to the body of knowledge by adding insight into how risk management fits in these domains and provides direction on the possible areas of mitigating risks.

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2024
Keywords
Governance, Management, Risk management, Systems-of-Systems, 'current, Connected systems, Critical operations, Risk handling, Risks management, Sociotechnical systems, State of the art, System-of-systems, Systems management
National Category
Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:mdh:diva-68355 (URN)10.1109/SOSE62659.2024.10620940 (DOI)2-s2.0-85202189415 (Scopus ID)9798350365917 (ISBN)
Conference
19th International IEEE Conference on System of Systems Engineering, SoSE, Tacoma, June 23-26, 2024
Available from: 2024-09-04 Created: 2024-09-04 Last updated: 2024-09-04Bibliographically approved
Axelsson, J. & Eriksson, P. (2023). Higher-Level Capabilities of System-of-Systems Constituents: A Case of Industrial Ecosystems. In: 2023 18th Annual System of Systems Engineering Conference, SoSe 2023: . Paper presented at 18th Annual System of Systems Engineering Conference, SoSe 2023, Lille, 14 June 2023 through 16 June 2023. Institute of Electrical and Electronics Engineers Inc.
Open this publication in new window or tab >>Higher-Level Capabilities of System-of-Systems Constituents: A Case of Industrial Ecosystems
2023 (English)In: 2023 18th Annual System of Systems Engineering Conference, SoSe 2023, Institute of Electrical and Electronics Engineers Inc. , 2023Conference paper, Published paper (Refereed)
Abstract [en]

In a system-of-systems, independent constituent systems collaborate to achieve broader capabilities they cannot provide on their own. This paper investigates the nature of the constituent system capabilities beyond basic operational actions, to achieve a deeper understanding of what is required to participate in a system-of-systems. Through a case study of industrial ecosystems, the need is shown for planning how to use basic operational capabilities, for dynamic capabilities to achieve long-term evolution, and for resilience capabilities to deal with perturbations. This also affects the governance of the system. The findings are used to extend an existing conceptual model of constituent systems and to characterize collaboration in a system-of-systems that implements a value network. 

Place, publisher, year, edition, pages
Institute of Electrical and Electronics Engineers Inc., 2023
Keywords
capability models, constituent systems, industrial ecosystem, production planning, systems-of-systems, value network, Ecosystems, Long Term Evolution (LTE), Production control, Capability model, Case-studies, Constituent system, Dynamics capability, Industrial ecosystems, Operational capabilities, System capabilities, System-of-systems, System of systems
National Category
Computer Systems
Identifiers
urn:nbn:se:mdh:diva-63966 (URN)10.1109/SoSE59841.2023.10178670 (DOI)2-s2.0-85166737113 (Scopus ID)9798350327236 (ISBN)
Conference
18th Annual System of Systems Engineering Conference, SoSe 2023, Lille, 14 June 2023 through 16 June 2023
Available from: 2023-08-16 Created: 2023-08-16 Last updated: 2023-08-16Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-3986-1196

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