Modelware · Research

Publications

Peer-reviewed work by our founder and collaborators at NASA JPL, Airbus, and partner universities, on ontological modeling, automated reasoning, and rigorous model-based systems engineering. The ideas in these papers are the foundation OML Code is built on.

How to Cite openCAESAR

Elaasar, M., Rouquette, N., Wagner, D., Oakes, B., Hamou-Lhadj, A., Hamdaqa, M. “openCAESAR: Balancing Agility and Rigor in Model-Based Systems Engineering”, Proceedings of SAM 2023, Västerås, Sweden, 2023.

2025
Power of a Reasoner: Model Validation for SysML Model using openCAESAR

Nakajima, Y., Wada, A., Komatsu, Y., Elaasar, M., Jenkins, J.S., Wagner, D.A.

ACM/IEEE MODELS 2025 Companion Proceedings (MODELS-C), pp. 853–857

Validates SysML models with an automated reasoner through openCAESAR.

Reasoning SysML Read the paper
2025
openCAESAR Application to Power Balance Analysis in Early Space Mission Formulation

Nakajima, Y., Katsumata, H., Tate, D., Komatsu, Y., Levitt, A., Jenkins, J.S., Elaasar, M., Rouquette, N.F., Wagner, D.A.

ACM/IEEE MODELS 2025 Companion Proceedings (MODELS-C), pp. 844–852

Applies openCAESAR to power balance analysis during the early formulation of a space mission.

Aerospace Analysis Read the paper
2025
Model-Based Systems Engineering Perspectives: A Survey of Practitioner Experiences and Challenges

Elaasar, M., Hamou-Lhadj, A., Oakes, B., Hamdaqa, M.

ACM/IEEE MODELS 2025 Companion Proceedings (MODELS-C), pp. 367–376

Surveys practitioners on their experience with model-based systems engineering and the challenges that hold its adoption back.

Methodology Adoption Read the paper
2023
openCAESAR: Balancing Agility and Rigor in Model-Based Systems Engineering

Elaasar, M., Rouquette, N., Wagner, D., Oakes, B., Hamou-Lhadj, A., Hamdaqa, M.

Proceedings of SAM 2023, Västerås, Sweden

The primary citation for openCAESAR. Presents an approach that keeps model-based systems engineering both agile and formally rigorous, as applied at NASA JPL.

Methodology Ontologies Primary citation Read the paper
2023
Autonomica: Ontological Modeling and Analysis of Autonomous Behavior

Elaasar, M., Rouquette, N., Havelund, K., Feather, M., Bandyopadhyay, S., Candela, A.

Proceedings of INCOSE IS 2023, Honolulu, Hawaii

Models autonomous behavior ontologically so that planning and execution can be analyzed formally rather than only tested.

Autonomy Reasoning Read the paper
2022
Ontological Metamodeling and Analysis Using openCAESAR

Wagner, D., Chodas, M., Elaasar, M., Jenkins, J.S., Rouquette, N.

Handbook of Model-Based Systems Engineering, Springer, Cham

A book chapter on treating metamodeling as the modeling of vocabularies, and on analyzing the resulting models with description logic.

Ontologies Metamodeling Read the paper
2022
Building a Semantic Layer for Early Design Trade Studies in the Development of Commercial Aircraft

Zindel, A., Feo-Arenis, S., Helle, P., Schramm, G., Elaasar, M.

Proceedings of the 8th IEEE International Symposium on Systems Engineering (ISSE), Vienna, Austria

Applies a semantic layer to early aircraft design trade studies so data distributed across engineering disciplines becomes openly queryable.

Aerospace Trade Studies
2022
Semantic Modeling for Power Management using CAESAR

Wagner, D., Chodas, M., Elaasar, M., Jenkins, J.S., Rouquette, N.

Handbook of Model-Based Systems Engineering, pp. 1–18

Shows how semantic models bring the rigor of computer-aided design to spacecraft power management.

Aerospace Analysis Read the paper
2020
CAESAR Model-Based Approach to Harness Design

Wagner, D., Kim, S., Jimenez, A., Elaasar, M., Rouquette, N., Jenkins, S.

Proceedings of the IEEE Aerospace Conference, Big Sky, MT, USA

A case study developing spacecraft electrical interface and harness specifications for the Europa Clipper flight project.

Aerospace Case Study Read the paper
2019
The Case for Integrated Model Centric Engineering

Elaasar, M., Rouquette, N., Jenkins, S., Gerard, S.

Proceedings of the Model Based Enterprise Summit, Gaithersburg, MD

Argues that MBSE adoption stalls without an integrated, model-centric foundation, and sets out what such a foundation requires.

Methodology

Research You Can Build On

The methods in these papers are not theory left on the page. They ship inside OML Code.

Explore OML Code Talk to Us