Teses / dissertações sobre o tema "Planification de séquence d'assemblage"
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Elhoud, Anass. "Artificial intelligence-based approach for acceleration & optimization of hybrid production line preliminary design in the automotive industry". Electronic Thesis or Diss., Bourgogne Franche-Comté, 2024. http://indexation.univ-fcomte.fr/nuxeo/site/esupversions/d3a97160-65a3-48c3-b8c5-c431847fc587.
Texto completo da fonteIn the competitive automotive industry, optimizing production lines is crucial for enhancing efficiency and profitability. This thesis presents a comprehensive solution developed in collaboration with a leading automotive company, tackling three key challenges: assembly sequence planning, resource balancing, and dynamic performance evaluation. The first solution optimizes assembly sequences to minimize resource usage and production costs using reinforcement learning and hierarchical clustering. The second solution addresses assembly line balancing, employing metaheuristic algorithms to reduce cycle time without increasing resources. The third solution improves dynamic production line performance under stochastic events, such as breakdowns and delays, through inventory management and optimal control strategies. Each solution was validated in real industrial environments, demonstrating substantial improvements in production line efficiency and performance
Zaldivar, Colado Ulises. "Planification d'assemblage en environnement virtuel". Versailles-St Quentin en Yvelines, 2009. http://www.theses.fr/2009VERS0056.
Texto completo da fonteThis thesis deals with the use of virtual reality to create a synthetic environment which allows assembling virtual mechanical products. The objective is to test the product assemblability at the design stage and generate the most feasible assemble sequences by performing assembly operations in virtual environment. The virtual environment is enriched by dynamic behavior of parts and subassemblies, haptic sensation and interactive visualization. Dynamic behavior allows the existence of geometrical constraints. This makes that assembly sequences generated in virtual environment will be also generated in real world. Haptic sensation makes interaction more realistic by the contact forces sensation between parts to assemble. Real time visualization of assembly sequence, operation graph and liaison graph aids the user to plan its task in virtual environment. We have statistically demonstrated that contact forces sensation between parts to assemble in virtual environment contributes to user performance in terms of task completion time. The most feasible assembly plan found in virtual environment is also the most feasible one found in the real word. We assume that the contribution of information feedback related to user actions in virtual environment (visualization of the generated assembly sequence and graphs) is equivalent to the contribution of using 2D assembly drawings in real work. The assembly planning activity does not depend on the interaction environment. This validates our approach of mechanical assembly in virtual environment
Bré, Moussa Diomandé. "Détermination d'une séquence optimale d'assemblage par le regroupement des opérations". Thèse, Université du Québec à Trois-Rivières, 1995. http://depot-e.uqtr.ca/4980/1/000620565.pdf.
Texto completo da fonteNajera, José. "Planification et éxécution de stratégies d'assemblage en robotique". Grenoble INPG, 1995. http://www.theses.fr/1995INPG0130.
Texto completo da fonteTheveneau, Pascal. "Utilisation du raisonnement géométrique pour la planification en robotique d'assemblage : le système PAMELA". Grenoble INPG, 1988. http://tel.archives-ouvertes.fr/tel-00330615.
Texto completo da fonteTheveneau, Pascal. "Utilisation du raisonnement géométrique pour la planification en robotique d'assemblage le système PAMELA /". Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb37618848q.
Texto completo da fonteTheveneau, Pascal Laugier Christian Jorrand Philippe. "Utilisation du raisonnement géométrique pour la planification en robotique d'assemblage le système PAMELA /". S.l. : Université Grenoble 1, 2008. http://tel.archives-ouvertes.fr/tel-00330615.
Texto completo da fonteDemoly, Frédéric. "Conception intégrée et gestion d'informations techniques : application à l'ingénierie du produit et de sa séquence d'assemblage". Phd thesis, Université de Technologie de Belfort-Montbeliard, 2010. http://tel.archives-ouvertes.fr/tel-00508925.
Texto completo da fonteAguilera, Luiz Manoel. "Ordonnancement de production avec coûts de changements dépendant de la séquence". Grenoble INPG, 1993. http://www.theses.fr/1993INPG0183.
Texto completo da fonteLalami, Idris. "Planification de la production des usines de mécanique en coordination avec les usines d'assemblage de véhicules". Thesis, Université Grenoble Alpes (ComUE), 2016. http://www.theses.fr/2016GREAI012.
Texto completo da fonteThe objective of this thesis is to provide a production planning tool for a supplier and to explore ways to improve the coordination between this supplier and customer plants. Based on a case study in the automotive industry, this thesis considers the case of powertrain plants (units producing engines, gearboxes, and chassis parts) that supply the car assembly plants.By analyzing the customer plant demand, we highlight the variability causes of this demand and we propose ways to improve coordination with the supplier through a more efficient information sharing. To plan the production of the supplier, we propose a mathematical model which is a mixed integer linear program. This model provides a detailed production plan respecting existing constraints and targeting four objectives: satisfying the forecasted demand, reaching safety stock levels, balancing stock levels between products, and leveling the production. The value of this model is demonstrated by tests using real data. As this model is intended to be used as part of a rolling horizon planning, we analyze the influence of two parameters: planning frequency and length of the frozen horizon. We give recommendations on the choice of these parameters to ensure a good tradeoff between service level, inventory, and planning stability. Finally, to improve the coordination between the customer plants and the supplier, two ways are in particular investigated: improving the accuracy of the forecasts sent to supplier and lengthening the time allowed to fulfill the demand. The value of implementing these proposals is evaluated by simulation
Ould, Mohamed Yahya Louly Mohamed Aly. "Optimisation des stocks des composants et planification de leurs réapprovisionnements pour les systèmes d'assemblage soumis à des aléas". Troyes, 2001. http://www.theses.fr/2001TROY0003.
Texto completo da fonteKalafate, Omar. "Planification des tâches opératoires robotiques basée sur le modèle d'acteur : Aide à la construction de programmes d'un robot d'assemblage". Valenciennes, 1990. https://ged.uphf.fr/nuxeo/site/esupversions/5baa874b-5bdc-4bbe-8f33-60d03f0bfcfa.
Texto completo da fonteHimmelstein, Jesse Cooper. "Geometric operators for motion planning". Toulouse, INSA, 2008. http://eprint.insa-toulouse.fr/archive/00000241/.
Texto completo da fonteLa planification du mouvement connait une utilisation croissante dans le contexte industriel. Qu’elle soit destinée à la programmation des robots dans l’usine ou au calcul de l’assemblage d’une pièce mécanique, la planification au travers des algorithmes probabilistes est particulièrement efficace pour résoudre des problèmes complexes et difficiles pour l’opérateur humain. Cette thèse CIFRE, effectuée en collaboration entre le laboratoire de recherche LAAS-CNRS et la jeune entreprise Kineo CAM, s’attache à résoudre la problématique de planification de mouvement dans l’usine numérique. Nous avons identifié trois domaines auxquels s’intéressent les partenaires industriels et nous apportons des contributions dans chacun d’eux: la détection de collision, le volume balayé et le mouvement en collision. La détection de collision est un opérateur critique pour analyser des maquettes numériques. Les algorithmes de planification de mouvement font si souvent appel à cet opérateur qu’il représente un point critique pour les performances. C’est pourquoi, il existe une grande variété d’algorithmes spécialisés pour chaque type de géométries possibles. Cette diversité de solutions induit une difficulté pour l’intégration de plusieurs types de géométries dans la même architecture. Nous proposons une structure algorithmique rassemblant des types géométriques hétérogènes pour effectuer les tests de proximité entre eux. Cette architecture distingue un noyau algorithmique commun entre des approches de division de l’espace, et des tests spécialisés pour un couple de primitives géométriques donné. Nous offrons ainsi la possibilité de facilement ajouter des types de données nouveaux sans pénaliser la performance. Notre approche est validée sur un cas de robot humanoïde qui navigue dans un environnement inconnu grâce à la vision. Concernant le volume balayé, il est utilisé pour visualiser l’étendue d’un mouvement, qu’il soit la vibration d’un moteur ou le geste d‘un mannequin virtuel. L’approche la plus innovante de la littérature repose sur la puissance du matériel graphique pour calculer une approximation du volume balayé très rapidement. Elle est toutefois limitée en entrée à un seul objet, qui luimême doit décrire un volume fermé. Afin d’adapter cet algorithme au contexte de la conception numérique, nous modifions son comportement pour traiter des « soupes de polygones » ainsi que des trajectoires discontinues. Nous montrons son efficacité sur les mouvements de désassemblage pour des pièces avec un grand nombre de polygones. Il est difficile de manipuler le volume décrit par une soupe de polygones. A partir du calcul du volume balayé, nous introduisons des opérateurs qui changent la taille de l’objet discret. Ces operateurs calculent la somme de Minkowski entre l’objet et une sphère afin d’agrandir l’objet, et la différence de Minkowski pour le rétrécir. Nous obtenons les résultats sur les objets statiques ainsi que dynamiques. Enfin, nous abordons le problème de la planification de mouvement en collision. Cette antilogie exprime la capacité d’autoriser une collision bornée pendant la recherche de trajectoire. Ceci permet de résoudre certains problèmes d’assemblage très difficiles. Par exemple, lors du calcul des séquences de désassemblage, il peut être utile de permettre à des « pièces obstacles » telles que les vis de se déplacer pendant la planification. De plus, en autorisant la collision, nous sommes capables de résoudre des problèmes de passage en force. Cette problématique se pose souvent dans la maquette numérique où certaines pièces sont « souples » ou si le problème consiste à identifier la trajectoire « la moins pire » quand aucun chemin sans collision n’existe. Nous apportons dans ce travail plusieurs contributions qui s’appliquent à la conception numérique pour la robotique industrielle. Nous essayons de marier une approche scientifique avec des critères de fonctionnalités strictes pour mieux s’adapter aux utilisateurs de la conception numérique. Nous cherchons à exposer les avantages et les inconvénients de nos approches tout au long du manuscrit
Sabar, Mohamed. "Une approche à base d'agents pour la planification et l'ordonnancement en temps réel de personnel dans un contexte de chaîne d'assemblage flexible". Thesis, Université Laval, 2008. http://www.theses.ulaval.ca/2008/25762/25762.pdf.
Texto completo da fonteArkhipov, Dmitrii. "Planification socio-responsable du travail dans les chaînes de montage d'aéronefs : comment satisfaire à la fois objectifs ergonomiques et économiques". Thesis, Toulouse 3, 2019. http://www.theses.fr/2019TOU30107.
Texto completo da fonteIn this thesis, the scheduling problem of tasks in aircraft assembly lines is studied. These production lines are mainly manual and paced. Since the failure of delivery on time may result in significant penalties for the manufacturer, it is crucial to meet the schedule at each workstation taking into account both economic and ergonomic criteria. This scheduling problem can be considered as a generalized Resource-Constraints Project Scheduling Problem (RCPSP). Firstly, we review the existing ergonomic methods that can be used to evaluate the physical workload in production lines and examine their applicability to the context of aircraft assembly lines with long takt times. On the basis of this evaluation, we develop mathematical models to be introduced in considered RCPSP problems in order to take into account the ergonomic impact on the operators. Taking into consideration these ergonomic constraints, the original industrial problem is modeled as a RCPSP with special constraints and objectives integrating both economic and ergonomic aspects. Several formulations with multi-skilled operators, resources with time-dependent capacities, constraints on ergonomic factors and multi-mode tasks ordered by precedence relations with time lags are considered. Constraint Programming and Integer Linear Programming models are developed for these formulations. In order to enhance the solution procedures, novel constraint propagation techniques are proposed and implemented. A new algorithm for lower bound calculation is developed as well. The efficiency of presented models and methods are validated through numerical experiments
Himmelstein, Jesse. "Geometric operators for motion planning". Phd thesis, INSA de Toulouse, 2008. http://tel.archives-ouvertes.fr/tel-00348010.
Texto completo da fonteDemol, Benjamin. "Méthodes d'intégration des images à résonance magnétique dans les calculs de dose Monte Carlo appliqués à la stéréotaxie intracrânienne". Thesis, Lille 1, 2016. http://www.theses.fr/2016LIL10097/document.
Texto completo da fonteIn the context of quality assurance of radiotherapy treatment , magnetic resonance imaging (MRI)-only treatment planning removes contour uncertainties originating from image registration between MRI and computed tomography (CT). The main aim of the thesis is to develop methods to generate synthetic CT (pCT) from MRI and to evaluate uncertainties on Monte Carlo planned dose within the framework of stereotactic radiosurgery. In the first chapter, stoichiometric calibration of the CT was realized. This was integrated into our Monte Carlo-based treatment plan quality control system. Using this calibration, we demonstrated that only the hydrogen content of tissues is required to perform accurate Monte Carlo dose calculations. Tissue hydrogen quantification from MRI sequences was then theoretically and experimentally studied. The second part concerns pCT generation from a conventional 3D T1-weighted sequence using an in-house atlas-based deformation method, where MRI intensity is taken into account while generating the pCT. A dosimetric study on a patient cohort was performed to evaluate the performance of the method. Several solutions were proposed in order to improve the results in the case of a particular patient anatomy. pCT generation from MRI will allow to remove the CT exam from routine practice, which will lead to a workflow simplification, a cost diminution, and a consistent integration of clinical practice when using treatment machines with an integrated MRI scanner
Guiras, Zouhour. "Contribution à l'optimisation des politiques de maintenance et l'analyse de risque dans la planification des opérations d’assemblage - désassemblage à deux niveaux". Electronic Thesis or Diss., Université de Lorraine, 2019. http://www.theses.fr/2019LORR0016.
Texto completo da fonteThe reality of the economic markets places constraints on manufacturing companies that are increasingly difficult to achieve, such as product diversification, quality improvement, cost reduction and fewer delays. These constraints are satisfied by a better organization of manufacturing systems using existing technical resources. Our thesis focuses on two major contributions, the first is to model different industrial systems (simple production system, assembly system, disassembly system) by integrating maintenance policies. The second contribution is based on risk assessment of profit loss following a decision taken after an optimization of an industrial system. Three different industrial problems are studied; the first concerns the development of risk assessment methods of profit loss resulting from the choice of an optimization algorithm to solve a problem of joint production and maintenance planning. To achieve our goals, we start by calculating production and maintenance plans using different optimization algorithms. In addition, we propose analytical models to quantify the risk of profit loss resulting from product returns and of repair times. This study provides information on the most effective optimization algorithms for the problems encountered to help and guide decision-makers in the analysis and evaluation of their decisions. The second problem concerns the optimization of two-level assembly system planning. A mathematical model is developed to incorporate supply planning for two-level assembly system with stochastic lead times and failures. The optimal maintenance planning obtained is used in the risk assessment to find the threshold repair period that reduces the profit loss. The third problem studied concerns the optimization of disassembly system of returned products (used or end of life products), remanufacturing and assembly of finished products taking into account the degradation of the production system. An analytical model is developed to consider disassembly, remanufacturing of returned products that contribute to the assembly of finished products. Indeed, the latter may consist of new or remanufactured components. A maintenance policy is sequentially integrated to reduce the unavailability of the system. The goal of this study is to help decision makers, under certain conditions, choose the most cost-effective process to satisfy the customer and who can also adapt to the potential risks that can disrupt the disassembly-remanufacturing-assembly system. The risk associated with system repair periods is discussed, which has an impact on managerial decision-making
Alami, Rachid. "Robots autonomes : du concept au robot. Architectures, représentations et algorithmes". Habilitation à diriger des recherches, Université Paul Sabatier - Toulouse III, 1996. http://tel.archives-ouvertes.fr/tel-00165562.
Texto completo da fonteGuiras, Zouhour. "Contribution à l'optimisation des politiques de maintenance et l'analyse de risque dans la planification des opérations d’assemblage - désassemblage à deux niveaux". Thesis, Université de Lorraine, 2019. http://www.theses.fr/2019LORR0016/document.
Texto completo da fonteThe reality of the economic markets places constraints on manufacturing companies that are increasingly difficult to achieve, such as product diversification, quality improvement, cost reduction and fewer delays. These constraints are satisfied by a better organization of manufacturing systems using existing technical resources. Our thesis focuses on two major contributions, the first is to model different industrial systems (simple production system, assembly system, disassembly system) by integrating maintenance policies. The second contribution is based on risk assessment of profit loss following a decision taken after an optimization of an industrial system. Three different industrial problems are studied; the first concerns the development of risk assessment methods of profit loss resulting from the choice of an optimization algorithm to solve a problem of joint production and maintenance planning. To achieve our goals, we start by calculating production and maintenance plans using different optimization algorithms. In addition, we propose analytical models to quantify the risk of profit loss resulting from product returns and of repair times. This study provides information on the most effective optimization algorithms for the problems encountered to help and guide decision-makers in the analysis and evaluation of their decisions. The second problem concerns the optimization of two-level assembly system planning. A mathematical model is developed to incorporate supply planning for two-level assembly system with stochastic lead times and failures. The optimal maintenance planning obtained is used in the risk assessment to find the threshold repair period that reduces the profit loss. The third problem studied concerns the optimization of disassembly system of returned products (used or end of life products), remanufacturing and assembly of finished products taking into account the degradation of the production system. An analytical model is developed to consider disassembly, remanufacturing of returned products that contribute to the assembly of finished products. Indeed, the latter may consist of new or remanufactured components. A maintenance policy is sequentially integrated to reduce the unavailability of the system. The goal of this study is to help decision makers, under certain conditions, choose the most cost-effective process to satisfy the customer and who can also adapt to the potential risks that can disrupt the disassembly-remanufacturing-assembly system. The risk associated with system repair periods is discussed, which has an impact on managerial decision-making
Bigard, Charlotte. "Eviter-Réduire-Compenser : d’un idéal conceptuel aux défis de mise en œuvre : une analyse pluridisciplinaire et multi-échelle". Thesis, Montpellier, 2018. http://www.theses.fr/2018MONTG010/document.
Texto completo da fonteTerritory provides the support for interactions between humans avec their living environment. Among these interactions, it is well known that anthropic activities are a major cause of biodiversity erosion. In this respect, the mitigation hierarchy (avoidance, reduction and offsetting impacts) is a regulatory tool whose objective is to achieve a “no net loss” of biodiversity following urban development. However, the efficiency of the tool is questioned because of its practical and theoretical limits, and the recurring focus on biodiversity offsets and on the “project” scale, or the convergence of studies on large development projects.Based on questions arising from practical action and by adopting a multi-disciplinary approach and posture at the knowledge-action interface, this thesis hypothesizes that the current lack of efficiency is the result of a problem of scale and that a temporal, spatial and functional switch in scale could help the mitigation hierarchy to reach its objectives. Through quantitative and qualitative analysis of the mitigation hierarchy implementation for small-scale development projects, we identify a set of limits associated with studies done at scale of individual projects. These findings illustrate the need to upscale towards a territorial and strategic approach to the implementation of the mitigation hierarchy. Finally, we initiate a reflexion on the development of a methodological framework to anticipate the mitigation hierarchy implementation at the urban planning stage, and we test it on the Montpellier metropolitan territory.Finally, these research studies provide new answers to the question of the effective purpose of the tool: is its aim to avoid or legitimise biodiversity loss? Our propositions and perspectives for practitioners and scientists are in line with a mitigation hierarchy implementation that is more likely to reach no net loss objectives
Gicquel, Céline. "MIP models and exact methods for the Discrete Lot-sizing and Scheduling Problem with sequence-dependent changeover costs and times". Phd thesis, Ecole Centrale Paris, 2008. http://tel.archives-ouvertes.fr/tel-00375964.
Texto completo da fonteRobert, Aurélie. "Vers une méthodologie de structuration de la dynamique des interactions au sein du modèle Multi-Domaines et Multi-Vues. Application à la conception de familles de produits modulaires". Phd thesis, Université de Technologie de Belfort-Montbeliard, 2012. http://tel.archives-ouvertes.fr/tel-00863788.
Texto completo da fonteTarabon, Simon. "La prise en compte des fonctionnalités écologiques dans l'aménagement des territoires et l'application de la séquence Éviter-Réduire-Compenser : De l'échelle projet à la planification Environmental impact assessment of development projects improved by merging species distribution and habitat connectivity modelling Integrating a landscape connectivity approach into mitigation hierarchy planning by anticipating urban dynamics. Landscape and Urban Planning Améliorer la prise en compte des fonctionnalités écologiques dans la séquence Éviter-Réduire-Compenser Maximizing habitat connectivity in the mitigation hierarchy. A case study on three terrestrial mammals in an urban environment The effects of climate warming and urbanised areas on the future distribution of Cortaderia selloana, pampas grass, in France". Thesis, Avignon, 2020. http://www.theses.fr/2020AVIG0720.
Texto completo da fonteOver the past decades, biodiversity erosion has speeded up and become a global environmental concern since. Anthropization has led to. The mitigation hierarchy (avoidance, reduction and offsetting of impacts) is a regulatory tool implemented in a context of habitat destruction and fragmentation, disrupting species’ life cycle. The objective is to achieve “no net loss” of biodiversity following urban development. Although biodiversity conservation regulations have recently better addressed ecosystem functioning, the mitigation hierarchy is still being implemented with little concern for the spatial configuration of ecosystems in the landscape. This thesis hypothesizes that the major difficulties encountered by stakeholders are, in part, methodological and technical. Situating our research at the knowledge-action interface, we propose a methodological framework based on several modeling approaches, to respond to the different scientific and operational challenges. This thesis joins forces with other scientific projects and stakeholders’ networks by exploring complementary axes. To this end, we first integrate spatio-temporal issues of biodiversity into overall mitigation hierarchy application, focusing on potential impacts and dimensioning at “territorial development project” scale through a case study on the new stadium in Lyon (Southern France). Combining species distributions models and spatial graphs improves habitat connectivity and therefore the design of the development projects. Next, we demonstrate the positive impacts on peri-urban habitat connectivity of pooling and anticipating offsets in the suburbs of Lyon. In the last part, we demonstrate the implications of an anticipated and planned approach to the mitigation hierarchy on a planning scale. We consider both ecological connectivity and urban dynamics, in an attempt to minimize the ecological impacts of urban sprawl by avoiding urbanization of areas of highest ecological value and then enhance the application of biodiversity offsetting. This method is tested on projections for the Toulouse conurbation (Southern France) by 2040. Thus, this thesis presents an overall approach that can help to increase habitat connectivity and to improve the design of territorial development projects at different spatial and temporal scales. This methodology is based on freeware available to all practitioners. It will serve planners, designers, and decision-makers needing to ensure that there are no significant or irreversible effects on biodiversity, and environmental authorities making sure that all environmental issues are taken into account in the design of development projects
Théveneau, Pascal. "Utilisation du raisonnement géométrique pour la planification en robotique d'assemblage :". Phd thesis, 1988. http://tel.archives-ouvertes.fr/tel-00330615.
Texto completo da fonteDe, La Rosa-Rosero Mario Fernando. "Planification de mouvements avec prise en compte explicite des incertitudes géométriques". Phd thesis, 1996. http://tel.archives-ouvertes.fr/tel-00004986.
Texto completo da fonteMoumene, Khaled. "Résolution du problème d'ordonnancement des activités avec contraintes de ressources et sa généralisation". Thèse, 2006. http://hdl.handle.net/1866/17847.
Texto completo da fonteBoulianne, Mélanie. "Effets d'une séquence d'enseignement de la préécriture sur la motivation des élèves à écrire des textes variés en première secondaire". Mémoire, 2008. http://www.archipel.uqam.ca/899/1/M10160.pdf.
Texto completo da fonteVaudry, Pierre-Luc. "Narrative generation by associative network extraction from real-life temporal data". Thèse, 2016. http://hdl.handle.net/1866/18473.
Texto completo da fonteData about events abounds in our technological society. An attractive way of presenting real-life temporal data to facilitate its interpretation is an automatically generated narrative. Narrative comprehension involves the construction of a causal network by the reader. Narrative data-to-text systems seem to acknowledge causal relations as important. However, they play a secondary role in their document planners and their identification relies mostly on domain knowledge. This thesis proposes an assisted temporal data interpretation model by narrative generation in which narratives are structured with the help of a mix of automatically mined and manually defined association rules. The associations suggest causal hypotheses to the reader who can thus construct more easily a causal representation of the events. This model should be applicable to any repetitive temporal data, preferably including actions or activities, such as Activity of Daily Living (ADL) data. Sequential association rules are selected based on the criteria of confidence and statistical significance as measured in training data. World and domain knowledge association rules are based on the similarity of some aspect of a pair of events or on causal patterns difficult to detect statistically. To interpret a specific period to summarize, pairs of events for which an association rule applies are associated. Some extra associations are then derived. Together the events and associations form an associative network. The most important step of the Natural Language Generation (NLG) pipeline is document planning, comprising event selection and document structuring. For event selection, the model relies on the confidence of sequential associations to select the most unusual facts. The assumption is that an event that is implied by another one with a relatively high probability may be left implicit in the text. The structure of the narrative is called the connecting associative thread because it allows the reader to follow associations from the beginning to the end of the text. It takes the form of a spanning tree over the previously selected associative sub-network. The associations it contains are selected based on association type preferences and relative temporal distance. The connecting associative thread is then segmented into paragraphs, sentences, and phrases and the associations are translated to rhetorical relations. The microplanning step defines lexico-syntactic templates describing each event type. When two event descriptions need to be assembled in the same sentence, a discourse marker expressing the specified rhetorical relation is employed. A main event and a preceding main event are determined for each sentence. When the associative thread parent of the main event is not the preceding main event, an anaphor is added to the sentence front discourse marker. Surface realization can be performed in English or French thanks to bilingual lexico-syntactic specifications and the SimpleNLG-EnFr Java library. The results of a textual quality evaluation show that the texts are understandable and the lexical choices adequate.