While complex behavior can be generated through simple systems, as in chaotic and nonlinear systems, complex systems are found where a systems study contains multiple physical objects and interactions. Through the use of hierarchy, we are able to simplify and organize the complex system. Every level within the hierarchy may be reened into another level. System abstraction involves simpliication...

We describe and report upon various substantial extensions of the CSP refinement checker FDR including (i) the direct ability to handle real-time processes; (ii) the incorporation of bounded model checking technology; (iii) the development of conservative and highly efficient static analysis algorithms for guaranteeing livelock-freedom; and (iv) the development of automated CEGAR technology.

Data-driven workflows, of which IBM’s Business Artifacts are a prime exponent, have been successfully deployed in practice, adopted in industrial standards, and have spawned a rich body of research in academia, focused primarily on static analysis. In previous work, theoretical results were obtained on the verification of a rich model incorporating core elements of IBM’s successful GuardStage-M...

In this paper, we propose a 2-DOF parallel mechanism with flexure hinges. The kinematics and static analyses of this mechanism are studied in order to determine the kinematics properties, workspace, holding forces of the actuators and the reaction forces at the flexure hinges. These factors are useful for design process of this mechanism. The pseudo-rigid-body model (PRB model) of this mechanis...

In this work we present Goanna, the first tool that uses an off-the-shelf model checker for the static analysis of C/C++ source code. We outline its architecture and show how syntactic properties can be expressed in CTL. Once the properties have been defined the tool analyses source code automatically and efficiently. We demonstrate its applicability by presenting experimental results on analys...

A model order reduction methodology for reducing the of peridynamic transient heat is proposed. This based on static condensation procedure. To set development procedure a sound mathematical setting, nonlocal vector calculus was employed in formulation transport problem. The framework proposed this study provides technique to reduce dimensionality while still maintaining accurate prediction res...