Agent-based modeling and simulation (ABMS) is a new approach to modeling autonomous systems and interacting agents. This method is becoming more and more popular for its efficiency and simplicity. It constitutes an approach in the field of modeling complex systems. Indeed, ABMS offers, contrary to other types of simulations, the possibility of directly representing the simulated entities, their behaviors, and their interactions without having to recourse to mathematical equations. This work is a contribution in this sense, the goal is to propose an agent-based model to simulate an industrial system. The latter presents the problem of complexity, which can be mastered with the Multi-Agent Systems (MAS) approach. Our model is validated by a case study of the natural gas dehydration process. The latter is consolidated by a simulation made in the multi-agent platform JADE (Java Agent DEvelopment Framework).

Refactoring is an important technique for restructuring code to improve its design and increase programmer productivity and code reuse. Performing refactorings manually, however, is tedious, time consuming and error-prone. Thus, providing an automated support for them is necessary. Unfortunately even in our days, such automation is still not easily achieved and requires formal specifications of the refactoring process. Moreover, extensibility and tool development automation are factors that should be taken into consideration when designing and implementing automated refactorings. In this paper, we introduce a model-driven approach where refactoring features, such as code representation, analysis and transformation adopt models as first-class artifacts. We aim at exploring the value of model transformation and code generation when formalizing refactorings and developing tool support. The presented approach is applied to the refactoring of Java code using a prototypical implementation based on the Eclipse Modeling Framework, a language workbench, a Java metamodel and a set of OMG standards.