The lack of formalism in most software developments can lead to a loss of precision and
correctness in the resulting software. Formal techniques of program development have been …

UML is a widespread language used in both industry and academia, despite the fact that its
semantics is still informal and allows ambiguities. On the other hand, OhCircus is a formal …

The current practice of programming mobile and autonomous robots does not reflect the
modern outlook of their applications. Such practice is often based on standard state …

Hoare and He's unifying theories of programming (UTP) provide a collection of relational
models that can be used to study and compare several programming paradigms. In this …

As software complexity increases, so does the need for precision. For some areas, such as
high-integrity and safety-critical domains, this precision is imperative rather than optional. To …

The lack of a formal semantics for UML-RT makes it inadequate for rigourous system
development, especially if the preservation of behaviour is a major concern when applying …

Autonomous and mobile robots are becoming ubiquitous. From domestic robotic vacuum
cleaners to driverless cars, such robots interact with their environment and humans, leading …

Abstract Safety-Critical Java (SCJ) is a novel version of Java that addresses issues related
to real-time programming and certification of safety-critical applications. In this paper, we …

In this paper, we study object-oriented programming concepts present in languages like
Java and C++ in the framework of the Unifying Theories of Programming (UTP). This work …

This position paper proposes a refinement technique for the development of Safety-Critical
Java (SCJ) programs. It is based on the Circus family of languages, which comprises …