Christian Braesch

Verification, validation, qualification and certification of enterprise models: Statements and opportunities

The first aim of this article is to demonstrate the high level of dependency between modeling activities and verification, validation, qualification and certification (VVQC) activities during the entire course of a project in an enterprise. It therefore aims to show the interest and relevance of VVQC to the enterprise-modeling domain, before highlighting the objectives to be achieved and requirements to be fulfilled by future work on VVQC. The first part introduces the concepts and definitions required. The second part describes the state of the art concerning the uses, best practices and main current research related to VVQC in the enterprise field. The third part proposes some orientations for future research to be prioritized in order to deal with crucial challenges in the enterprise. It appears that these research orientations have been applied for some years by both academic- and industry-based researchers.

Interactive Visual Intervention Planning - Interactive Visualization for Intervention Planning in Particle Accelerator Environments with Ionizing Radiation

Intervention planning is crucial for maintenance operations in particle accelerator environments with ionizing radiation, during which the radiation dose contracted by maintenance workers should be reduced to a minimum. In this context, we discuss the visualization aspects of a new software tool, which integrates interactive exploration of a scene depicting an accelerator facility augmented with residual radiation level simulations, with the visualization of intervention data such as the followed trajectory and maintenance tasks. The visualization of each of these aspects has its effect on the final predicted contracted radiation dose. In this context, we explore the possible benefits of a user study, with the goal of enhancing the visual conditions in which the intervention planner using the software tool is minimizing the radiation dose.

Developing an Interactive Intervention Planner - A Systems Engineering Perspective

Intervention planning is crucial for maintenance operations in particle accelerator environments with ionizing radiation, during which the radiation dose received by maintenance workers should be reduced to a minimum. In this context, we discuss the development of a new software tool and the entailed methodology, including the visualization aspects. The software tool integrates interactive exploration of a scene depicting an accelerator facility augmented with residual radiation level simulations, with the visualization of intervention data such as the followed trajectory and maintenance tasks. Its conception allows for future inclusion of measurements performed by mobile robotic devices. In this work, we explore the systems engineering life cycle of the development process of an interactive intervention planner, which includes the needs analysis, specification explicitation, conceptual mathematical modelling, iterative implementation, design and prototype testing and usability testing.

Verification, validation and accreditation of enterprise models

Abstract Enterprise modelling promotes modelling languages, methods, reference architecture and support tools allowing us to model and to argue decisions impacting the enterprise organization. As demonstrated before in software or system engineering, a model must be checked and analysed before using it for example for testing a hypothesis, to measure system efficiency and to decide. This paper intents defining proposes some opportunities offered to the researchers and to the industrial users to develop the necessary tools and concepts of verification and validation in enterprise modelling domain.

Identifying PLM Themes, Trends and Clusters Through Ten Years of Scientific Publications

PLM encompasses a wide array of expertise, from designing green products to digital factories, with perspectives ranging from an IT standpoint to business strategies, encompassing products, processes and services. Hence, identifying the contours of PLM as a science through the themes, trends and clusters of its scientific literature is very challenging. At the same time, being able to portray PLM will benefit the PLM community, including researchers and practitioners, and should help foresee its future. This work examines PLM research bibliometric trends over the last ten years. We review the scientific literature published in English from 2005 to 2014 in peer-reviewed journals and conferences. Paper keywords are analyzed so as to identify trends and reveal the clusters of related themes based on the occurrences of words and the frequency of associations between them. Amongst the findings we observe that PLM coverage is both very large (2847 keywords being used over a decade) and very thin (2134 of these keywords appear only once in the decade). We also observe that the keyword showing the highest increase is Building Information Modeling (BIM).

Operational Framework Based on Modeling Languages to Support Product Repository Implementation

Embracing Product Lifecycle Management approach involves integrating a product repository in the company information system. From customers needs to disposal stage, several product representations exist. The product repository purpose is to secure consistency of one product representation with the others. This paper presents an operational modeling framework that supports product repository implementation. In order to ensure consistency, this framework identifies correspondences between entities of languages (“trade” languages and standard languages). The presented concepts are illustrated with correspondences between language entities of product designed and product planned to be built Bills of Materials.