Guest lecture Thursday November 28th, 2024: Professor Einar Broch Johnsen, Department of Informatics, University of Oslo

The lecture will be held in person in Auditorium 1.022 at Tekonlogibygget.

Professional (academic) contact person is head of department Anders Andersen.

Target group: Master and PhD students and employees at CS department.

Welcome!

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Date: Thursday November 28th, 2024, at 12:15
Place: Auditorium 1.022 at Tekonlogibygget
Url stremaing: https://uit.cloud.panopto.eu/Panopto/Pages/Viewer.aspx?id=47cd3292-2c06-4b16-a1a4-b21a00fc7119
Title: " Environmental Digital Twins "
Lecturer: Professor Einar Broch Johnsen, Department of Informatics, University of Oslo

Abstract
This talk is concerned with Environmental Digital twins, i.e., digital twins of natural environments. We start by discussing digital twins in general. Digital twin applications use digital artifacts to twin physical systems. The purpose is to continuously mirror the structure and behavior of the physical system, such that stakeholders can analyze the physical system by means of the digital twin for, e.g., decision support, scenario exploration, model-based control, systematic reconfiguration, etc. In this talk, we discuss the basic concepts of a digital twin, and how digital twins differ from models and control systems. We show how digital twins can be realized in a framework that integrates models at runtime, semantic technology and simulation models, in order to leverage domain knowledge in model-based analysis driven by live data. We further discuss how a digital twin can systematically evolve over time to mirror a changing physical system. For this purpose, we discuss our work on semantic reflection, which enables a digital twin to query a model of its own runtime configuration, reconfigure to maintain system invariants, and leverage formalized knowledge of the application domain in its (re)configuration strategies. The talk will be illustrated by concrete easy-to-understand examples of digital twins, including our on-going work on digital twins for natural systems such as the Oslo fjord. Our work on a digital twin of the Oslo fjord suggests how physical simulators and domain knowledge can combine into a more general architecture for environmental digital twins.

Bio
Einar Broch Johnsen is a professor at the Department of Informatics, University of Oslo. His research interests include programming models and methodology; program specification and modeling; formal methods and associated theory; lightweight analysis, type systems, testing; as well as deductive verification and formal logic. He is active in formal methods for distributed and concurrent systems, including object-oriented and actor languages, manycore computing, cloud computing and digital twins. He is one of the main developers of the ABS modeling language for asynchronous distributed systems and the SMOL programming language for digital twins.

Einar Broch Johnsen has been prominently involved in many national and European research projects. In particular, he was the strategy director of Sirius (2015-2023), a center for research-driven innovation on scalable data access with 8-year funding from the Research Council of Norway. He was the coordinator of the EU FP7 project Envisage (2013-2016) on formal methods for cloud computing and the scientific coordinator of the EU H2020 project HyVar (2015-2018) on hybrid variability systems.

Einar Broch Johnsen is member of IFIP WG2.2 “Formal Description of Programming Concepts”. He was board member of Sintef ICT (2009-2015). He is currently member of the Scientific Council of the dScience centre at UiO, advisory board member of the DIGIT center (Aarhus, DK), board member of Formal Methods Europe, editorial board member of the journals Formal Aspects of Computing, the Journal of Logical and Algebraic Methods in Programming, the International Journal of Networked and Distributed Computing, and steering committee member of the conference series on Fundamental Approaches to Software Engineering (FASE) and Integrated Formal Methods (iFM). He was general chair of FM 2015 and DisCoTec 2008, and PC chair of FASE 2022, SEFM 2018, TAP 2017, ESOCC 2016, iFM 2013 and FMOODS 2007.

Kortnytt fra Institutt for informatikk

Fuglesteg, Jan jan.fuglesteg@uit.no Studierådgiver