#digital-twins

Quality Attributes Series, Chapter 2: Integrability in a city digital twin as a system of systems

Second post in the Quality Attributes Series. A city digital twin is never finished being integrated. Integrability is the predicted cost and risk of plugging tomorrow's components into today's platform, and it can be estimated from the size of the interface between them and the distance at each dependency.

Quality Attributes Series, Chapter 1: Maintainability in a city digital twin as a system of systems

First post in the Quality Attributes Series, on how to build quality attributes into a city digital twin that is really a system of systems. It starts with maintainability: a city twin rarely fails on launch day. It fails in year three, when a sensor vendor changes firmware, a feed changes its schema and a new twin wants to join.

Building knowledge infrastructures to support the Twin of Digital Twins concept

A city ends up with several digital twins: emergencies, mobility, infrastructure. Each one works on its own and none of them knows the others exist. What makes them cohere is not a bigger twin, it is a knowledge infrastructure underneath them, and a knowledge graph built properly is what turns the Twin of Digital Twins from a slide into something you can query.

Graph-Driven city operations under ISO 5087

As cities become increasingly digital, the challenge of unifying disparate urban data sources has never been more critical. With ISO 5087, the city is modeled as an RDF graph where every urban asset is a linked resource, ready for SPARQL queries and seamless integration

Modular thinking for digital twins to reduce complexity

This post explores how to effectively structure the architecture of a complex Digital Twin using modular design principles. Drawing from the concept to group or separate components based on shared data, responsibility, abstraction level, and system complexity. The focus is on reducing total system complexity while ensuring each component has clear, meaningful responsibility

DTaC (Digital Twins as Convergence) in the life cycle of a smart city

The concept of DTaC (Digital Twins as Convergence) is fundamental for supporting the entire life cycle of a city, encompassing planning, construction, management, and operations. This approach integrates information-rich 3D models of the city through the convergence of BIM (Building Information Modeling), GIS (Geographic Information Systems) adn Real-Time data from IoT.

Digital Twins & City Data Mesh

Cities are adopting next-generation data lakes to democratize access to information and make automated intelligent decisions. However, to overcome common failures, a shift towards modern distributed architecture and self-serve data infrastructure is essential. This article explores the role of Digital Twins in data exchange using Data Mesh and how City Data Mesh can transform urban data management.

Digital Twins Ecosystems 101

Spectrum of Digital Twins Ecosystems. Architectures designed to harness the complexity and interconnectedness of modern Digital Twins systems.

How to build a well-designed modular Digital Twin Software based on algebraic composition

The aim of this post is to describe a theoretical approach – the Linear Software Models of Composition. Characterize software concepts in terms of mathematical notions, while enabling software intuitive interpretations. A comprehensive theory of software systems has additional properties besides algebraic composition.

Postel’s Law - Improvement of interoperability in composable architectures for Digital Twins

Inter-Twin Communication

How to Inter-Twin communication allow real-time data transmission and collaboration for the physical entities.

Architecting Digital Twins ontologies with Liskov's substitution principle

How to apply The Liskov substitution principle to the design of a Digital Twin.

Delivering Cloud-Native Digital Twins

How cloud enables the development and deployment of digital twins at scale.

How to desing a Digital Twin composable architecture

Digital Twins architectures should be composable. When you combine the principles of modularity, encapsulation, orchestration and interoperability, it should guide your approach to conceptualizing what to compose, and when.

Technical foundation of a Digital Twin

The concept of Digital Twin is missing a technical foundation of what to expect from a software architecture perspective.

Digital twins under the hood: Twinning and Twinning Rate.

Some notes about Digital Twins and the act of synchronising the virtual and physical states.

How to evolve your architecture to support immersive digital twins

Digital Twins should be informative, predictive, and immersive, but not realistic.