Digital Twins: Simulation, Optimisation, and Automated Operations in the Built Environment

A special issue of Applied Sciences (ISSN 2076-3417). This special issue belongs to the section "Computing and Artificial Intelligence".

Deadline for manuscript submissions: closed (29 November 2021) | Viewed by 8765

Special Issue Editors


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Guest Editor
Big Data Enterprise and Artificial Intelligence Laboratory, University of the West of England Bristol, Bristol, UK
Interests: digital twins; smart infrastructure; augmented reality; virtual reality; machine learning; optimisation; technical simulations
Cardiff School of Engineering, Cardiff University, Queen's Buildings, The Parade CARDIFF, Wales CF24 3AA, UK
Interests: specification and implementation of building/district/city data storage; Internet of Things (IoT) and its application to the monitoring and control of the built environment; data analytics, including machine learning and artificial intelligence; application of cloud/distributed computing to data storage and processing for built environment applications; semantics of data within the built environment
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Special Issue Information

Dear Colleagues,

The emergence of the Digital Twin paradigm for built assets has been possible, primarily, due to recent technological advances on sensors, the Internet of Things (IoT), and cloud computing. These technologies enable real-time data collection, communication, and computation, required by digital twins. However, beyond real-time monitoring of built assets, few advancements have been reported in the literature on simulation, optimisation, and automated operations approaches concerning built assets. Ideally, a Digital Twin will leverage real-time sensor data to simulate operations and change control parameters accordingly.

The purpose of this Special Issue is to contribute innovative research to the built environment field by showcasing simulation, optimisation, and automated operations approaches that leverage the Digital Twin paradigm across a wide range of built environment use-cases. Our objective is to compile an outstanding collection of research papers in the field of simulation, optimisation, and approaches for automated operations driven by Digital Twins in the built environment.

We encourage authors to consider this Special Issue as an opportunity to go beyond traditional disciplinary boundaries in computer science and the built environment; and to engage more broadly with varied approaches to simulation and automated operations. Researchers are invited to share their original research (theoretical and experimental), case studies, and comprehensive review papers addressing (but not limited to) the following subjects:

  • Simulation approaches for Digital Twins
  • Digital Twin approaches to optimal operations
  • Digital Twin approaches to optimised designs
  • Digital Twin approaches to automated operations
  • Simulations that use real-time sensor data as inputs to adjust control parameters
  • Validation approaches for Digital Twin simulations
  • Calibration approaches for Digital Twin models
  • Case studies addressing DT simulation, optimisation, and automated operations for any phase of built and infrastructure assets lifecycle.

Dr. Manuel Davila Delgado
Dr. Tom Beach
Guest Editors

Manuscript Submission Information

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Keywords

  • digital twin
  • simulations
  • optimisation
  • model validation
  • optimal operations
  • automated operations
  • data-driven modelling
  • real-time modelling
  • human–machine interaction
  • autonomous agents
  • multi-agent systems
  • Markov processes
  • behavioural cloning
  • inverse reinforcement learning
  • imitation learning
  • Q learning
  • deep reinforcement learning
  • reinforcement learning

Published Papers (2 papers)

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Research

18 pages, 7463 KiB  
Article
Deep Reinforcement Learning-Based DQN Agent Algorithm for Visual Object Tracking in a Virtual Environmental Simulation
by Jin-Hyeok Park, Khurshedjon Farkhodov, Suk-Hwan Lee and Ki-Ryong Kwon
Appl. Sci. 2022, 12(7), 3220; https://0-doi-org.brum.beds.ac.uk/10.3390/app12073220 - 22 Mar 2022
Cited by 12 | Viewed by 5663
Abstract
The complexity of object tracking models among hardware applications has become a more in-demand task to accomplish with multifunctional algorithm skills in various indeterminable environment tracking conditions. Experimenting with the virtual realistic simulator brings new dependencies and requirements, which may cause problems while [...] Read more.
The complexity of object tracking models among hardware applications has become a more in-demand task to accomplish with multifunctional algorithm skills in various indeterminable environment tracking conditions. Experimenting with the virtual realistic simulator brings new dependencies and requirements, which may cause problems while experimenting with runtime processing. The goal of this paper is to present an object tracking framework that differs from the most advanced tracking models by experimenting with virtual environment simulation (Aerial Informatics and Robotics Simulation—AirSim, City Environ) using one of the Deep Reinforcement Learning Models named as Deep Q-Learning algorithms. Our proposed network examines the environment using a deep reinforcement learning model to regulate activities in the virtual simulation environment and utilizes sequential pictures from the realistic VCE (Virtual City Environ) model as inputs. Subsequently, the deep reinforcement network model was pretrained using multiple sequential training image sets and fine-tuned for adaptability during runtime tracking. The experimental results were outstanding in terms of speed and accuracy. Moreover, we were unable to identify any results that could be compared to the state-of-the-art methods that use deep network-based trackers in runtime simulation platforms, since this testing experiment was conducted on the two public datasets VisDrone2019 and OTB-100, and achieved better performance among compared conventional methods. Full article
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22 pages, 975 KiB  
Article
A Discrete Process Modelling and Simulation Methodology for Industrial Systems within the Concept of Digital Twins
by George Tsinarakis, Nikolaos Sarantinoudis and George Arampatzis
Appl. Sci. 2022, 12(2), 870; https://0-doi-org.brum.beds.ac.uk/10.3390/app12020870 - 15 Jan 2022
Cited by 9 | Viewed by 2154
Abstract
A generic well-defined methodology for the construction and operation of dynamic process models of discrete industrial systems following a number of well-defined steps is introduced. The sequence of steps for the application of the method as well as the necessary inputs, conditions, constraints [...] Read more.
A generic well-defined methodology for the construction and operation of dynamic process models of discrete industrial systems following a number of well-defined steps is introduced. The sequence of steps for the application of the method as well as the necessary inputs, conditions, constraints and the results obtained are defined. The proposed methodology covers the classical offline modelling and simulation applications as well as their online counterpart, which use the physical system in the context of digital twins, with extensive data exchange and interaction with sensors, actuators and tools from other scientific fields as analytics and optimisation. The implemented process models can be used for what-if analysis, comparative evaluation of alternative scenarios and for the calculation of key performance indicators describing the behaviour of the physical systems under given conditions as well as for online monitoring, management and adjustment of the physical industrial system operations with respect to given rules and targets. An application of the proposed methodology in a discrete industrial system is presented, and interesting conclusions arise and are discussed. Finally, the open issues, limitations and future extensions of the research are considered. Full article
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