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Jean-Yves Choley

Bio: Jean-Yves Choley is an academic researcher. The author has contributed to research in topics: Systems Modeling Language & Modelica. The author has an hindex of 13, co-authored 148 publications receiving 815 citations.


Papers
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Journal ArticleDOI
TL;DR: A SysML-based methodology is proposed that consists of two phases: a black box analysis with an external point of view that provides a comprehensive and consistent set requirements, and a white box analysis that progressively leads to the internal architecture and behavior of the system.

106 citations

Proceedings ArticleDOI
08 Jul 2014
TL;DR: A methodology is proposed to integrate safety analysis within a systems engineering approach based on SysML models and aims at generating (semi-) automatically safety analysis artifacts, mainly FMEA and FTA, from system models.
Abstract: In this paper, a methodology is proposed to integrate safety analysis within a systems engineering approach. This methodology is based on SysML models and aims at generating (semi-) automatically safety analysis artifacts, mainly FMEA and FTA, from system models. Preliminary functional and component FMEA are automatically generated from the functional and structural models respectively, then completed by safety experts. By representing SysML structural diagram as a directed multi-graph, through a graph traversal algorithm and some identified patterns, generic fault trees are automatically derived with corresponding logic gates and events. The proposed methodology provides the safety expert with assistance during safety analysis. It helps reducing time and error proneness of the safety analysis process. It also helps ensuring consistency since the safety analysis artifacts are automatically generated from the latest system model version. The methodology is applied to a real case study, the electromechanical actuator EMA.

65 citations

Journal ArticleDOI
TL;DR: The proposed methodology named safety integration in systems engineering (SafeSysE) is applied to a real case study from the aeronautics domain: electromechanical actuator (EMA).
Abstract: The main objective of this paper is the integration of safety analysis in a SysML-based systems engineering approach in order to make it more effective and efficient. It helps to ensure the consistency between safety analyses and system design and then to avoid late errors and to reduce system development time. To achieve this purpose, we tackled the following axes: 1) formalizing a SysML-based design methodology that will be the support for safety analyses; 2) providing an extension of SysML to enable the integration of specific needs for safety concepts in the system model; and 3) performing an automated exploration of the SysML models to generate necessary information to elaborate safety artifacts such as failure mode and effects analysis (FMEA) and fault tree analysis (FTA). The proposed methodology named safety integration in systems engineering (SafeSysE) is applied to a real case study from the aeronautics domain: electromechanical actuator (EMA).

42 citations

Journal ArticleDOI
TL;DR: In this article, a sequentially coupled approach is proposed to optimize the layout of power module with high risk of errors, which allows automatic data exchange between physical models and optimal configurations with reduced design time and risk.
Abstract: Nowadays, the design of Power Modules (PM) is shared between multidisciplinary teams of designers using various modelling tools. Consequently, optimizing the layout of PM is a long process with high risk of errors. In this paper, a sequentially coupled approach is proposed to optimize this process. This integrated method is based on coupling physical models and applying an optimization process. It is illustrated through the example of the layout of a half-bridge Mosfet power module exposed to electric and thermal constraints. So, physical models and software components have been developed, in order to define the multidisciplinary design process and then to perform the layout optimization using the NLPQL algorithm. It is shown that, the proposed approach allows automatic data exchange between physical models and optimal configurations are proposed with reduced design time and risk. Therefore, this integrated approach shows a great improvement in the design of PM and multidisciplinary products. (Received in November 2010, accepted in April 2011. This paper was with the authors 2 months for 2 revisions.)

31 citations

Proceedings ArticleDOI
01 Nov 2012
TL;DR: A new multi-criteria indicator for mechatronic system performance evaluation is formulated and described and it will be shown that the new indicator helps designers to evaluate and therefore optimize a mechatronics system design efficiently and rapidly.
Abstract: Optimizing a multidisciplinary integrated system design, taking into account multi-criteria interacting requirements, is a real challenge in mechatronic design. A new multi-criteria indicator for mechatronic system performance evaluation is formulated and described in this paper. An example of mechatronic system design is considered to validate the presented approach. It will be shown that the new indicator helps designers to evaluate and therefore optimize a mechatronic system design efficiently and rapidly.

28 citations


Cited by
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Journal Article
TL;DR: This study reviews several of the most commonly used inductive teaching methods, including inquiry learning, problem-based learning, project-basedLearning, case-based teaching, discovery learning, and just-in-time teaching, and defines each method, highlights commonalities and specific differences, and reviews research on the effectiveness.
Abstract: Traditional engineering instruction is deductive, beginning with theories and progressing to the applications of those theories Alternative teaching approaches are more inductive Topics are introduced by presenting specific observations, case studies or problems, and theories are taught or the students are helped to discover them only after the need to know them has been established This study reviews several of the most commonly used inductive teaching methods, including inquiry learning, problem-based learning, project-based learning, case-based teaching, discovery learning, and just-in-time teaching The paper defines each method, highlights commonalities and specific differences, and reviews research on the effectiveness of the methods While the strength of the evidence varies from one method to another, inductive methods are consistently found to be at least equal to, and in general more effective than, traditional deductive methods for achieving a broad range of learning outcomes

1,673 citations

01 Jan 2012
TL;DR: The results show that HRM and ICT practices for managing knowledge are quite strongly correlated and have a statistically significant influence on both financial performance and competitiveness of the firm.
Abstract: Purpose – While nowadays an extensive literature promoting knowledge management (KM) exists, there is a worrying shortage of empirical studies demonstrating an actual connection between KM activities and organizational outcomes. To bridge this gap, this paper aims to examine the link between KM practices, firm competitiveness and economic performance. Design/methodology/approach – This paper proposes a framework of KM practices consisting of human resource management (HRM) and information communication technology (ICT). These both are hypothesized to impact competitiveness and economic performance of the firm. Hypotheses are then tested with structural equation modeling by using a survey dataset of 234 companies. Findings – The results show that HRM and ICT practices for managing knowledge are quite strongly correlated and have a statistically significant influence on both financial performance and competitiveness of the firm. The findings also indicate that ICT practices improve financial performance only when they are coupled with HRM practices. Research limitations/implications – The data are limited to companies from Finland, Russia and China. Practical implications – The paper contributes to managerial practice by pointing out the importance of utilizing a combination of both social and technical means for KM and illustrating that they do matter for the company bottom line. Originality/value – This paper contributes to the literature on knowledge-based organizing by empirically analyzing the performance impact of various areas of KM. It thereby tests the proposition put forth in many previous theoretical and case-based studies that KM promotes high organizational performance. It also addresses the interaction of social and technical KM practices in producing organizational outcomes.

372 citations