Being used by single companies and by coalitions of governments at the same time, Architecture Frameworks have spread widely as a key tool for the enablement of the Model Based Systems Engineering approach. The Unified Architecture Framework, promoted by the Object Management Group, is rapidly emerging as the reference framework to describe Enterprise Architecture, providing a standard representation for both defense and non‐defense organizations’ architecture descriptions. The work described in the present paper concerns the implementation of a simplified meta‐model, derived as a tailoring of the Unified Architecture Framework's full meta‐model, aimed at allowing the usage of the UAF for the description of System Architectures, rather than Enterprise Architectures. The main UAF View Domains concerned with Systems having the characteristics of Systems‐of‐Systems (Operational, Strategic and Resources), will be analyzed and a solution will be shown to allow a simple implementation of SysML models, as an architectural description of such Systems. A study case will also be presented, developed as a joint effort of Leonardo and Aster for the modeling of naval Combat Systems.

The current socio‐economical context is affected by extremely challenging factors such as the macro‐economic crisis, the globalization of markets, the exponential growth in the complexity of systems, the continuous evolution of technologies and the criticality of requirements subject to rapid and sometimes uncontrollable evolution. In such a competitive landscape the role of the future leaders gets essential. They shall be able, by means of a holistic, methodologically structured and flexible approach, to drive their programs through the implementation of the complex changes which are strategic to preserve the competitiveness. Such new leaders must be endowed with both strong technical skills, continuously trained in the key reference standards, and soft skills, useful for the strategic understanding of the evolutionary processes expressed by the markets and for the improvement of the complex relationships efficiency with the relevant stakeholders. The development and implementation of optimized technical‐managerial solutions is therefore essential, vital for the “feasibility” and competitiveness of front‐running projects, and cannot succeed without a contextual analysis of the reference scenarios. In this context the Cynefin Framework, an interpretative model of the different levels of the systems complexity, ranging from order to disorder, can provide a very effective support. The goal of this paper is to develop a multi‐faceted and comprehensive vision of the problems in the various domains of complexity, “contextualizing” the most effective management approaches and “soft and hard” skills of the leader. The paper benefits of the input received during various sessions of the second Cohort of the INCOSE Technical Leadership Institute, where precious insight and feedback has been collected, especially from the TLI coaches, Patrick Godfrey, Michael Pennotti and Don Gelosh.

Abstract. This paper describes a SysML-based approach for the definition of the different layers of requirements necessary for a full functional specification of complex systems and/or systems-of-systems. The approach is specifically suited to those cases in which the development of the system as a whole and that of the single system elements (or of subsets of system elements), are under the responsibility of different development teams, within the same firm or belonging to different firms.The process is based on a recursive approach, in which each layer of the development must: i) interact with its "customer", through the acquisition and analysis of the stakeholder requirements applied to the system, ii) define the system-level requirements as a result of a black-box analysis of the system's behavior, and iii) perform a white-box analysis for the definition of the system elements' requirements.

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This paper describes an application of the Model Based Systems Engineering (MBSE) approach in a study performed on behalf of the Italian Port Informers Association, with the purpose to provide a solid technical background to the definition of the Port Informer Service (also referred in this paper simply as Service), and to its future evolution. The current Italian legislation does not include such Service neither among the "public utility services" ruled by the Maritime Authority (Coast Guard), nor among the "general interest services" ruled by the Port Authority. The lack of a clear definition of the Service is the source of an uncertain situation, in which the activities of the Port Informers derive from local ordinances issued by the single Harbor Master's Offices (Capitanerie di Porto, local office of the Coast Guard). From a different point of view, the continuous evolution in the technological equipment of the authorities involved in port operations, with systems such as Vessel Traffic Services (VTS), Automatic Identification System (AIS), Port Management and Information System (PMIS) and so on, urges the Port Informers to share a common process of migration, in order to be fully integrated in the exploitation of the opportunities made available by the new technologies.A strong need was thus felt for a new regulation of the services provided by the Port Informers at national level, in order to promote a necessary uniformity in the provision of the Service, and to better support the management of port security, maritime traffic monitoring and navigation security.