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Publications significatives

  • Concurrent product configuration and process planning, towards an approach combining interactivity and optimality

    Références :
    Paul Pitiot, Michel Aldanondo, Élise Vareilles, Paul Gaborit, Meriem Djefel et Sabine Carbonnel. « Concurrent product configuration and process planning, towards an approach combining interactivity and optimality ». In : International Journal of Production Research 51.2 (2013). P. 524--541. ISSN : 0020-7543. DOI : 10.1080/00207543.2011.653449.
    In mass customisation, defining concurrently the configured product and the planning of the associated production process is a key issue in the customer/supplier relationship. Nevertheless, few studies propose supporting the decision-maker during the resolution of this significant problem. After studying the decision-maker's needs and problem characterisation (modelling and scale aspects), we propose in this paper a two-step approach with the aid of some tools. The first step allows the customer or internal requirements to be captured interactively with a constraint-based approach. However, this step does not lead to one single solution, e. g. there are many uninstantiated remaining decision variables. In this paper, we suggest adding an original optimisation step to complete this task. Thus, the contribution of the study is twofold: first, methodologically to define a new two-step approach that meets industrial needs; and second, to provide adapted tools especially for the optimisation step. The optimisation step, using a multi-criteria constrained evolutionary algorithm, allows the user to select their own cost/cycle time compromise among a set of Pareto optimised solutions. A conventional evolutionary algorithm is adapted and modified, with the inclusion of filtering processing, in order to avoid generating invalid solutions. Experimentations are described, and a comparison is made with a branch-and-bound approach that outlines the interest in the propositions.
    Keywords: constraint filtering, constraint satisfaction, evolutionary algorithm, evolutionary algorithms, framework, optimisation, optimization, process planning, product configuration, requirements
  • Generic bill of functions, materials, and operations for SAP(2) configuration

    Références :
    Linda L. Zhang, Élise Vareilles et Michel Aldanondo. « Generic bill of functions, materials, and operations for SAP(2) configuration ». In : International Journal of Production Research 51.2 (2013). P. 465--478. ISSN : 0020-7543. DOI : 10.1080/00207543.2011.652745.
    Most available studies on configuration focus on either sales configuration specifying functional features or production configuration addressing product components. It has been well recognised that automating most of the activities associated with specification, engineering, and process planning of customised products and their interactions is one key in achieving product customisation. Thus, treating sales configuration and product configuration separately may not contribute to product customisation from a systematic view although they may lead to the improvement of individual stages. Recognising this limitation of existing studies, in this paper, we propose integrated SAles, Product and Production (SAP(2)) configuration, which helps achieve product customisation from a holistic view. Its rationale lies in automating consistently sales, product and production configuration activities in one system. In view of the importance of configuration models, we focus on the model underpinning SAP(2) configuration called generic bill of functions, materials and operations (GBoFMO) and discuss it in detail. As the core of SAP(2) configuration, GBoFMO can provide companies with an insight into organising the large volumes of data and knowledge in the life cycle of product family development. We also report a case study of light passenger aircrafts to illustrate the GBoFMO.
    Keywords: constraint satisfaction, generic bill of functions, materials and operations, mass customization, product configuration, production configuration, requirements, sales configuration, system, tool
  • Semantic issues in model-driven management of information system interoperability

    Références :
    Frédérick Bénaben, Nicolas Boissel-Dallier, Hervé Pingaud et Jean-Pierre Lorré. « Semantic issues in model-driven management of information system interoperability ». In : International Journal of Computer Integrated Manufacturing 26.11 (1er nov. 2013). P. 1042--1053. ISSN : 0951-192X. DOI : 10.1080/0951192X.2012.684712.
    The Mediation Information System Engineering (MISE Project) aims at providing collaborating organisations with a mediation information system (MIS) in charge of supporting interoperability of a collaborative network. The MISE proposes an overall MIS design method according to a model-driven approach, based on model transformations. This MIS is in charge of managing (i) information, (ii) functions and (iii) processes among the information systems (IS) of partner organisations involved in the network. Semantic issues are accompanying this triple objective: How to deal with information reconciliation? How to ensure the matching between business functions and technical services? How to identify workflows among business processes? This article aims first at presenting the MISE approach, second at defining the semantic gaps along the MISE approach and third at describing some past, current and future research works that deal with these issues. Finally and as a conclusion, the very design-oriented' previous considerations are confronted with 'runtime' requirements.
    Keywords: framework, information system, Interoperability, model-driven engineering, semantic reconciliation, web services
  • Towards a crisis performance-measurement system

    Références :
    Carine Rongier, Matthieu Lauras, François Galasso et Didier Gourc. « Towards a crisis performance-measurement system ». In : International Journal of Computer Integrated Manufacturing 26.11 (1er nov. 2013). P. 1087--1102. ISSN : 0951-192X. DOI : 10.1080/0951192X.2012.684711.
    During a crisis, the main goal for decision-makers consists in restoring a stabilised nominal mode. The stakeholders face considerable pressure and drastic constraints in response time and coordination. This study proposes a method to support these stakeholders in making responsive and accurate decisions while carrying out a performance evaluation of the activities that run during the crisis-response process. This method is composed of four steps: (1) characterisation of the crisis-response system, (2) selection of system components to evaluate in priority, (3) determination of performance dimensions to consider and (4) creation of indicators. Currently, performance evaluation is only used subsequent to a crisis, due to difficulties in gathering and aggregating information into trustable performance indicators. This paper proposes a method to obtain a relevant and dynamic decision-support system. Decision-makers will use it to resolve the crisis based on performance evaluation, in addition to the essential experience they undergo. A case study of crisis management within the French Red Cross non-governmental organisation is developed, through a Web-based prototype, in order to explain how performance indicators can both support crisis-response management and improve the collaboration of stakeholders.
    Keywords: crisis management, disaster management, humanitarian organisation process, management, metrics, performance assessment, performance indicators, performance-measurement system, supply chain performance
  • A decision-making tool to maximize chances of meeting project commitments

    Références :
    Trong-Hung Nguyen, François Marmier et Didier Gourc. « A decision-making tool to maximize chances of meeting project commitments ». In : International Journal of Production Economics 142.2 (avr. 2013). P. 214--224. ISSN : 0925-5273. DOI : 10.1016/j.ijpe.2010.11.023.
    The project management team has to respect contractual commitments, in terms of deadlines and budgets, that are often two antagonistic functions. Then, during the invitation to tender phase or when faced with a risk situation, it has to determine its risk management strategy. Based on the principles of a synchronized process between risk management and project management, we propose a decision-making tool to help the project manager choose the best risk treatment strategy. The methodology developed, called ProRisk, uses the concepts of risk scenario, treatment scenario and project scenario to determine the consequences of possible risks combined or not with preventive and/or corrective treatment actions. As a finding, the project manager is also able to indicate to the sales department if the financial and deadline conditions are sufficiently profitable with regard to the risks. (C) 2010 Elsevier B.V. All rights reserved.
    Keywords: Decision support, Project planning, Risk management, Scenarios, Treatment strategy
  • Innovative process engineering: a generic model of the innovation process

    Références :
    Thomas Pénide, Didier Gourc, Hervé Pingaud et Philippe Peillon. « Innovative process engineering: a generic model of the innovation process ». In : International Journal of Computer Integrated Manufacturing 26.3 (1er mars 2013). P. 183--200. ISSN : 0951-192X. DOI : 10.1080/0951192X.2012.717715.
    Innovation can be represented as a knowledge transformation process perceived with different levels of granularity. The milestones of this process allow assessment for its each step and set up feedback loops that will be highlighted. This innovation process is a good starting point to understand innovation and then to manage it. Best practices being patterns of processes, we describe innovation best practices as compulsory steps in our innovation process. To put into practice, the management of innovation in a concrete organisation, an alignment (in our case a mapping) between a repository of business processes and our typical innovation process, helps to describe which best practice applies to which business process.
    Keywords: alignment, best practices, bpm, business, innovation, modelling
  • A decision support system for optimising the order fulfilment process

    Références :
    Uche Okongwu, Matthieu Lauras, Lionel Dupont et Vérane Humez. « A decision support system for optimising the order fulfilment process ». In : Production Planning & Control 23.8 (2012). P. 581--598. ISSN : 0953-7287. DOI : 10.1080/09537287.2011.566230.
    Many authors have highlighted gaps at the interfaces between supply chains (SCs) and demand chains. Generally, the latter tends primarily to be 'agile' by maximising effectiveness and responsiveness while the former tends to be 'lean' by maximising efficiency. When, in the SC, disruptions (that lead to stock-out situations) occur after customer orders have been accepted, managers are faced with the problem of maximising customer satisfaction while taking into consideration the conflicting objectives of the supply and demand sides of the order fulfilment process. This article proposes a cross-functional multi-criteria decision-making (advanced available-to-promise) tool that provides different strategic options from which a solution can be chosen. It also proposes a performance measurement system to support the decision-making and improvement process. The results of some experimental tests show that the model enables to make strategic decisions on the degree of flexibility required to achieve the desired level of customer service.
    Keywords: Advanced available-to-promise, agility, Demand chain, Lean, Order fulfilment process, Supply chain
  • Scheduling rules to minimize total tardiness in a parallel machine problem with setup and calendar constraints

    Références :
    Jacques Lamothe, François Marmier, Matthieu Dupuy, Paul Gaborit et Lionel Dupont. « Scheduling rules to minimize total tardiness in a parallel machine problem with setup and calendar constraints ». In : Computers & Operations Research 39.6 (juin 2012). P. 1236--1244. ISSN : 0305-0548. DOI : 10.1016/j.cor.2010.07.007.
    Quality control lead times are one of most significant causes of loss of time in the pharmaceutical and cosmetics industries. This is partly due to the organization of laboratories that feature parallel multipurpose machines for chromatographic analyses. The testing process requires long setup times and operators are needed to launch the process. The various controls are non-preemptive and are characterized by a release date, a due date and available routings. These quality processes lead to significant delays, and we therefore evaluate the total tardiness criterion. Previous heuristics were defined for the total tardiness criterion, parallel machines, and setup such as apparent tardiness cost (ATC) and ATC with setups (ATCS). We propose new rules and a simulated annealing procedure in order to minimize total tardiness. (C) 2010 Elsevier Ltd. All rights reserved.
    Keywords: algorithms, costs, Heuristics, jobs, Parallel machine, Scheduling, sequence, Simulated annealing, times, total weighted tardiness
  • A supply chain performance analysis of a pull inspired supply strategy faced to demand uncertainties

    Références :
    Guillaume Marques, Jacques Lamothe, Caroline Thierry et Didier Gourc. « A supply chain performance analysis of a pull inspired supply strategy faced to demand uncertainties ». In : Journal of Intelligent Manufacturing 23.1 (févr. 2012). P. 91--108. ISSN : 0956-5515. DOI : 10.1007/s10845-009-0337-z.
    Vendor Managed Inventory (VMI) is currently seen as a short-term replenishment pull system. Moreover, VMI is usually synonymous with a distribution context and stable demand. However, industrial partners are faced with uncertainty in the context of a B to B relationship. Thus, an adaptation of the actors' planning processes is needed and the question is posed of the interest of VMI in a context of uncertain demand. The purpose of this paper is firstly to analyze the link between VMI and pull logic. Secondly, we explore the extension of VMI notions to the relationship between industrial partners and we confront VMI with uncertain demand in terms of trend, vision of the trend and variability in order to verify the usual stable demand assumption. We also present an integration of VMI into a simulation tool called LogiRisk that we have developed for the evaluation of risks of in supply chain collaboration policies, and a small case study.
    Keywords: conwip, determinants, integration, mrp, outcomes, Pull, replenishment, Risk, Simulation, system, Uncertainty, Vendor Managed Inventory, vendor-managed inventory, vmi
  • How to take into account general and contextual knowledge for interactive aiding design: Towards the coupling of CSP and CBR approaches

    Références :
    Élise Vareilles, Michel Aldanondo, Aurélien Codet de Boisse, Thierry Coudert, Paul Gaborit et Laurent Geneste. « How to take into account general and contextual knowledge for interactive aiding design: Towards the coupling of CSP and CBR approaches ». In : Engineering Applications of Artificial Intelligence 25.1 (févr. 2012). P. 31--47. ISSN : 0952-1976. DOI : 10.1016/j.engappai.2011.09.002.
    The goal of this paper is to show how it is possible to support design decisions with two different tools relying on two kinds of knowledge: case-based reasoning operating with contextual knowledge embodied in past cases and constraint filtering that operates with general knowledge formalized using constraints. Our goals are, firstly to make an overview of existing works that analyses the various ways to associate these two kinds of aiding tools essentially in a sequential way. Secondly, we propose an approach that allows us to use them simultaneously in order to assist design decisions with these two kinds of knowledge. The paper is organized as follows. In the first section, we define the goal of the paper and recall the background of case-based reasoning and constraint filtering. In the second section, the industrial problem which led us to consider these two kinds of knowledge is presented. In the third section, an overview of the various possibilities of using these two aiding decision tools in a sequential way is drawn up. In the fourth section, we propose an approach that allows us to use both aiding decision tools in a simultaneous and iterative way according to the availability of knowledge. An example dealing with helicopter maintenance illustrates our proposals. (C) 2011 Elsevier Ltd. All rights reserved.
    Keywords: Aiding design, Case-based filtering, Case-based reasoning, constraint satisfaction, Constraints satisfaction problem, Helicopters maintenance, management, support, system

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